CN219098480U - Lifting appliance and crane - Google Patents

Abstract

The utility model relates to a lifting appliance and a crane. The lifting appliance comprises a cross beam and a driving mechanism. The number of the cross beams is multiple, each cross beam is provided with a connecting part, and at least two cross beams are connected with the weight through the connecting parts. Through setting up a plurality of crossbeams and being connected with the heavy object, avoid single crossbeam to lift by crane the phenomenon that the slope appears unbalance. The driving mechanism comprises a driving piece and a transmission assembly, wherein the driving piece drives the two cross beams to move in opposite directions simultaneously through the transmission assembly, namely, the two cross beams can be close to or far away from each other simultaneously, the position of a heavy object is not required to be changed, the distance between the two cross beams is changed, and then the heavy objects with different sizes are adapted, so that the lifting appliance has higher universality.

Description

Lifting appliance and crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a lifting appliance and a crane.

Background

The crane plays an important role in industrial production and material handling, and the lifting appliance is an important component of the crane as a tool for lifting heavy objects by the crane. The diversity of material forms and the structural forms of different devices enable the lifting appliance to be various in forms.

The existing lifting appliance generally comprises a cross beam and lifting rings arranged at two ends of the cross beam, wherein the lifting rings are used for bearing or suspending heavy objects. Because the position of the hanging ring is fixed, the hanging ring is provided with hanging tools with different sizes for weights with different specifications. This increases the cost of the handling operation and also makes transportation and stacking inconvenient. Therefore, the existing lifting appliance has the problem of low universality.

Disclosure of Invention

Accordingly, it is necessary to provide a spreader which solves the problem of low versatility of the conventional spreader.

A spreader, comprising:

the cross beams are at least two, and the at least two cross beams are arranged at intervals along the first direction; each cross beam is provided with a connecting part for connecting with a weight;

the driving mechanism comprises a driving piece and a transmission assembly connected with the driving piece, wherein two cross beams are respectively connected with two ends of the transmission assembly; the driving mechanism drives the two cross beams to simultaneously do opposite movement through the transmission assembly.

In one embodiment, the number of the connecting portions is plural, and the plural connecting portions are disposed on each of the beams at intervals along the extending direction of the beams.

In one embodiment, the transmission assembly comprises a drive rod and two drive blocks arranged along the first direction; along the first direction, the screw threads at the two ends of the driving rod are opposite in rotation direction; the two driving blocks are respectively connected with the two ends of the driving rod in a threaded manner; the two cross beams are connected with the two driving blocks in a one-to-one correspondence manner;

the driving rod is connected to the driving piece, the driving piece is used for driving the driving rod to rotate around the axis of the driving rod to drive the two driving blocks to simultaneously do opposite movement, and the cross beam is driven by the driving blocks to synchronously move.

In one embodiment, the transmission assembly further comprises two transmission wheels arranged along a third direction, and the two transmission wheels are meshed for transmission; the third direction is perpendicular to the first direction;

one driving wheel is connected with the driving piece, and the other driving wheel is connected with the driving rod; the driving piece drives the driving rod to rotate through the driving wheel.

In one embodiment, the driving wheel is a bevel gear, and the axial directions of the two bevel gears are perpendicular.

In one embodiment, the spreader further comprises a guide, and the cross beam is slidably connected to the guide.

In one embodiment, at least one end of the guide member is provided with a first limiting portion, and the first limiting portion is used for abutting against the cross beam.

In one embodiment, the lifting appliance further comprises a balance shaft, an operating frame and a counterweight, wherein the operating frame and the counterweight are positioned at two ends of the balance shaft along a second direction; the operating frame, the weight piece and the two cross beams are distributed at intervals along the circumferential direction of the driving piece;

the weight is configured to operably move along an axial direction of the balance shaft; the second direction is perpendicular to the first direction.

In one embodiment, the lifting appliance further comprises a second limiting part, and when the second limiting part is in a locking state, the second limiting part is pressed on the balance shaft; the second limiting part is abutted with the counterweight;

when the second limiting part is in an unlocking state, the second limiting part is connected with the balance shaft in a sliding mode.

A crane comprising a spreader as described above.

The lifting appliance comprises a cross beam and a driving mechanism. The number of the cross beams is multiple, each cross beam is provided with a connecting part, and at least two cross beams are connected with the weight through the connecting parts. Through setting up a plurality of crossbeams and being connected with the heavy object, avoid single crossbeam to lift by crane the phenomenon that the slope appears unbalance. The driving mechanism comprises a driving piece and a transmission assembly, the driving piece drives the two cross beams to simultaneously do anisotropic motion through the transmission assembly, namely, the two cross beams can simultaneously approach or simultaneously depart from each other, the position of a heavy object is not required to be changed, the distance between the two cross beams is changed, and then the heavy objects with different sizes are adapted, so that the lifting appliance has higher universality. Taking a heavy object as CT equipment as an example, when the lifting appliance lifts the CT equipment, the distance between the two cross beams is changed through the driving mechanism, so that the lifting appliance can adapt to CT equipment of different models, and the CT equipment is lifted to a target position to realize high-voltage installation. In the process, manual operation is not needed, so that the labor cost is reduced, and meanwhile, the potential safety hazard caused by manual operation is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a lifting appliance according to an embodiment of the present utility model at a first view angle;

FIG. 2 is a schematic view of a part of the spreader of FIG. 1 in a second view;

FIG. 3 is a schematic view of a partial explosion of the spreader of FIG. 1 at a second angle of view;

FIG. 4 is a schematic view of the spreader of FIG. 1 in a third view;

fig. 5 is a schematic structural view of the spreader of fig. 1 at a fourth angle.

Reference numerals: 10-lifting appliance; 100-cross beams; 110-a connection; 200-a driving mechanism; 210-a driver; 220-a transmission assembly; 221-a drive rod; 222-a drive block; 223-a driving wheel; 300-guide; 310-guiding shaft; 400-a first limit part; 510-a counterweight; 520-an operation rack; 530-balance shaft; 540-a second limit part; 541-upper limit block; 542-lower limit block; 610-a distance adjusting plate; 620-an adapter; 630-fixing seat.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, 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 utility model 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 utility model.

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 utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, 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; can be mechanically or electrically connected; 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, 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.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Fig. 1 is a schematic structural diagram of a lifting appliance according to an embodiment of the present utility model at a first view angle; FIG. 2 is a schematic view of a part of the spreader of FIG. 1 in a second view; FIG. 3 is a schematic view of a partial explosion of the spreader of FIG. 1 at a second angle of view; FIG. 4 is a schematic view of the spreader of FIG. 1 in a third view; fig. 5 is a schematic structural view of the spreader of fig. 1 at a fourth angle.

Referring to fig. 1 to 5, a spreader 10 according to an embodiment of the present utility model includes a beam 100 and a driving mechanism 200. At least two cross beams 100 are arranged at intervals along the first direction; each cross beam 100 is provided with a connection 110 for connection with a weight. The driving mechanism 200 comprises a driving piece 210 and a transmission assembly 220 connected to the driving piece 210, wherein two cross beams 100 are respectively connected to two ends of the transmission assembly 220; the driving mechanism 200 drives the two cross beams 100 to simultaneously do opposite movement through the transmission assembly 220.

The first direction is shown by the X direction in the drawing, and the X direction may be directed by O to X or may be directed by X to O. The second direction, i.e. the extension direction of the cross beam, is shown by the Y direction in the figure, the X direction may be directed by O to X or by X to O. The third direction is shown by the Z direction in the illustration, which may be directed by O to Z or by Z to O. The first direction and the second direction are parallel to the horizontal plane, and the third direction is a direction perpendicular to the horizontal plane. Taking a weight as a cuboid as an example, the first direction is the length direction, the second direction is the width direction, and the third direction is the height direction.

Specifically, the connection portion 110 on the cross beam 100 is used for connection with a weight. When the number of the cross members 100 is two, the two cross members 100 are connected to the two ends of the weight in the first direction in one-to-one correspondence, respectively. In this way, the phenomenon of inclination unbalance occurring when the single beam 100 lifts a weight can be avoided. Before lifting, if the distance between the two beams 100 and the size difference of the weight are large, the driving member 210 acts to transmit power to the transmission assembly 220, and the transmission assembly 220 drives the two beams 100 to simultaneously make opposite movement, i.e. the two beams 100 can simultaneously approach or simultaneously separate until the connecting portion 110 is aligned with the end of the weight. For example, when the size of the weight is greater than the spacing of the two beams 100, the two beams 100 are spaced apart from each other; when the size of the weight is smaller than the distance between the two beams 100, the two beams 100 are close to each other. In this process, the driving mechanism 200 drives the two beams 100 to move without changing the positions of the weights, so that the distance between the two beams is changed, and weights with different sizes are further adapted, so that the lifting appliance 10 has higher universality. Taking a heavy object as a CT device as an example, when the lifting appliance 10 lifts the CT device, the distance between the two cross beams 100 is changed through the driving mechanism 200, so that the lifting appliance can adapt to CT devices of different models, and the CT device can be lifted to a target position to realize high-voltage installation. In the process, manual operation is not needed, so that the labor cost is reduced, and meanwhile, the potential safety hazard caused by manual operation is avoided.

When the number of the cross beams 100 is greater than two, the cross beams 100 are arranged side by side along the first direction, the two cross beams 100 symmetrically distributed relative to the driving piece 210 are respectively connected with two ends of the weight, and the cross beams 100 at other positions can be connected with the weight through the connecting parts, so that the contact area between the lifting appliance 10 and the weight is increased, and the lifting is more stable. Of course, the cross beams 100 at other positions are not connected with the weight, and the connection lifting effect can be ensured only by the connection of the two symmetrically distributed cross beams 100.

As shown in fig. 1 to 3, in an embodiment, the spreader 10 further includes a distance adjusting plate 610, and the cross beam 100 is slidably connected to the distance adjusting plate 610. Specifically, the distance adjusting plate 610 is provided with a plurality of first locking holes, and when the cross beam 100 moves to a proper position along the first direction, fasteners such as bolts pass through the cross beam 100 and the first locking holes, thereby locking the position of the cross beam 100, and reducing the risk of accidental offset of the cross beam 100. Further, the distance adjusting plate 610 is located above the cross beam 100, and a bracket is connected between the distance adjusting plate 610 and the cross beam 100, and the bracket includes a horizontal section and a vertical section, so that the bracket is in an L shape. The horizontal section is connected to the cross beam 100 and the vertical section is connected to the gage plate 610. The vertical section is provided with a second locking hole through which the beam 100 is fastened to the roll adjustment plate 610 by a fastener after the beam 100 is moved to a proper position. When it is desired to adjust the position of the cross beam 100, the fastener is unscrewed and withdrawn from the first locking hole. The bracket may be a sheet metal structure, which is not easy to deform, so that the beam 100 is locked more firmly and reliably, and the function of enhancing the connection strength between the distance plate 610 and the beam 100 can be achieved.

As shown in fig. 1 to 4, in one embodiment, the number of the connection portions 110 is plural, and the plural connection portions 110 are disposed on each beam 100 at intervals along the second direction. At least two connecting parts 110 are provided on each cross beam 100 for connecting with the weight, so as to improve the stability during lifting. By providing a plurality of spaced connection portions 110 on the cross beam 100, the weight can be connected with the connection portions 110 at corresponding positions when being lifted, thereby being adapted to the size of the weight in the second direction. Specifically, the connection portion 110 may be a through hole penetrating through the cross beam 100, and a snap ring is generally disposed on the weight, and the hook on the hanging strap passes through the through hole and the snap ring at the corresponding position, so as to connect the weight to the hanger 10. In other embodiments, the connecting portion may be a hook, and may be directly clamped with the clamping ring on the weight through the hook.

As shown in fig. 1-3, in one embodiment, the transmission assembly 220 includes a drive rod 221 and two drive blocks 222 arranged along a first direction; in the first direction, the screw threads at both ends of the driving rod 221 are reversely rotated; the two driving blocks 222 are respectively connected with two ends of the driving rod 221 in a threaded manner; the two cross members 100 are connected to the two driving blocks 222 in a one-to-one correspondence.

Wherein, the driving rod 221 is connected to the output end of the driving member 210, so that the power of the driving member 210 is transmitted to the driving rod 221, so that the driving rod 221 rotates around itself in the axial direction. Since the screw threads at the two ends of the driving rod 221 are opposite in rotation direction and the rotation of the driving blocks 222 is limited, the driving rod 221 rotates and drives the two driving blocks 222 to move reversely, that is, the two driving blocks 222 are simultaneously close to or simultaneously far away from each other, and further drive the cross beams 100 connected with the driving blocks 222 to move synchronously, so that the distance between the two cross beams 100 is changed, and the distance between the two cross beams 100 is adjusted.

In other embodiments, the driving rod and the driving block are not required, the transmission assembly comprises a gear and two racks, the axial direction of the gear is perpendicular to the first direction, and the two racks are distributed on two sides of the gear along the radial direction and meshed with the gear for transmission; the two racks are respectively connected with the two cross beams in a one-to-one correspondence. The gear is connected with the driving piece and is driven by the driving piece to rotate; the gear rotates to drive the two racks to move reversely at the same time, for example, when one rack moves leftwards, the other rack moves rightwards, and then the two cross beams connected with the racks are driven to move reversely.

As shown in fig. 1-3, in one embodiment, the transmission assembly 220 includes the aforementioned drive rod 221 and two drive blocks 222 arranged in a first direction. The drive assembly 220 further comprises two drive wheels 223 arranged in a third direction, and the two drive wheels 223 engage the drive. One of the driving wheels 223 is connected with the driving piece 210, and the other driving wheel 223 is connected with the driving rod 221; the driving member 210 drives the driving lever 221 to rotate through the driving wheel 223.

By providing two driving wheels 223, the power of the driving member 210 is transmitted to the driving rod 221, so that the driving member 210 may be disposed at a position offset from the driving rod 221 in terms of spatial arrangement, for example, both may be disposed in the third direction. Compared with the way that both are axially arranged along the driving rod 221, the space occupied along the axial direction can be saved, so that the overall layout is more compact. In other embodiments, the number of driving rods can be two, the two driving rods respectively correspond to one driving block, and the rotation directions of the two driving rods are opposite. One of the driving rods is connected with the driving piece, and the two driving rods are connected through a coupling, so that linkage of the two driving rods is realized.

In one embodiment, as shown in fig. 3, the drive wheel 223 is a helical gear, with the axial directions of the two helical gears being perpendicular. That is, the axial direction of one helical gear is parallel to the axial direction of the driving rod 221, and the axial direction of the other helical gear is perpendicular to the axial direction of the driving rod 221, so that the driving piece 210 and the driving rod 221 can be staggered along the third direction and the horizontal direction, the possibility of interference of each component in the rotation process is reduced, and the layout is more reasonable. In other embodiments, the driving wheel may be a spur gear, and the axial directions of the two spur gears are parallel to the axial direction of the driving rod correspondingly.

Referring to fig. 1 to 3, in an embodiment, the lifting appliance 10 further includes a fixing seat 630, and a receiving cavity is formed in the fixing seat 630, so that the driving member 210, the driving wheel 223 and the like are arranged in the receiving cavity, thereby playing a role in dust prevention and water prevention, preventing external impurities from entering the driving part to affect the driving stability thereof, and improving the service life thereof.

As shown in fig. 1 to 3, in one embodiment, the spreader 10 further comprises a guide 300, the guide 300 extending in a first direction, the cross beam 100 being slidably connected to the guide 300. By providing the guide 300, the movement of the cross beam 100 is guided and limited, and the movement along the first direction is more accurately controllable.

Specifically, the guide 300 includes guide shafts 310, and when the number of the cross members 100 is two, both ends of the guide shafts 310 in the axial direction thereof pass through the two cross members 100, respectively, that is, the cross members 100 are sleeved on the guide shafts 310, and are capable of sliding on the guide shafts 310. The movement of the cross beam 100 in the first direction is guided by the guide shaft 310. When the number of the cross members 100 is greater than two, the guide shafts 310 pass through each of the cross members 100 in turn. The guide shafts 310 may be two and symmetrically distributed on two sides of the driving rod 221, so as to further improve the guiding effect on the beam 100.

As shown in fig. 1 to 5, in one embodiment, at least one end of the guide 300 is provided with a first limiting portion 400, and the first limiting portion 400 is used to abut against the beam 100 to limit the movement of the beam 100. Through setting up first limit part 400 to restrict the removal range of crossbeam 100 along the first direction, prevent to adjust inappropriately, lead to the risk that crossbeam 100 breaks away from, promote the reliability of use of hoist 10. Since the two cross members 100 are moved in the opposite directions in synchronization, the first stopper 400 may be provided only at one end of the guide 300. Of course, the first stopper 400 may be provided at both ends. The first limiting portion 400 may be a first limiting block.

As shown in fig. 1 to 5, in one embodiment, the spreader 10 further includes a balance shaft 530, an operation frame 520, and a weight 510, the operation frame 520 and the weight 510 being located at both ends of the balance shaft 530 in the second direction; the weight 510 is configured to operably move along an axial direction of the balance shaft 530 to balance the weight of the operator frame 520.

Specifically, the operation frame 520, the weight 510, and the two cross members 100 are spaced apart in the circumferential direction of the driving member 210. Since the spreader 10 is typically attached to a trolley for lifting operations. Through setting up handling frame 520 and counter weight piece 510 for hoist 10 holistic atress is comparatively balanced, and then guarantees that hoist 10 when lifting by crane the heavy object, and the heavy object is whole to be in the horizontality, is difficult for taking place to incline. By arranging the movable weight piece 510, weights with different weights are further adapted, so that the stress of the weight piece 510 and the operating piece is balanced, and the possibility of tilting of the weights is reduced.

As shown in fig. 2 to 3, in one embodiment, the lifting appliance 10 further includes a second limiting portion 540, where when the second limiting portion 540 is in the locked state, the second limiting portion 540 is pressed against the balance shaft 530; the second limiting portion 540 abuts against the weight 510 to limit the movement of the weight 510; when the second limiting part 540 is in the unlocked state, the second limiting part 540 is slidably connected to the balance shaft 530.

By providing the second limiting part 540 having the locking state and the unlocking state, the weight 510 moving to the preset position is locked, the possibility that the weight 510 moves in the lifting process is reduced, and the weight 510 and the operation frame 520 are balanced. By unlocking the second limiting part 540, it can be moved to different positions, adapting to different weights.

As shown in fig. 1 to 3, specifically, the second limiting part 540 includes an upper limiting block 541 and a lower limiting block 542, and when the second limiting part 540 is in a locked state, the upper limiting block 541 and the lower limiting block 542 are pressed against the guide shaft 310, that is, positions of the upper limiting block 541 and the lower limiting block 542 are fixed relative to the guide shaft 310. Therefore, when the weight 510 moves to abut against the limiting portion, the weight 510 cannot continue to move, so that the position of the weight 510 is limited, and the balance reliability of the weight is improved. When the second limiting part 540 is in the unlocking state, that is, a gap is formed between the upper limiting block 541 and the guide shaft 310, so that the upper limiting block 541 can slide along the guide shaft 310, so that the weight 510 can change position, thereby changing the balance position, and adapting to different working conditions.

Further, an embodiment of the present utility model further provides a crane, including the lifting appliance 10. The crane is connected with a heavy object by arranging a plurality of cross beams 100 on the lifting appliance 10, so that the phenomenon of inclination unbalance when a single cross beam 100 lifts the heavy object is avoided. The driving mechanism 200 drives the two cross beams 100 to simultaneously do opposite movement, namely, the two cross beams 100 can simultaneously approach or simultaneously separate, the positions of the weights do not need to be changed, the distance between the two cross beams 100 is changed, and then the weights with different sizes are adapted, so that the lifting appliance 10 has higher universality.

As shown in fig. 1 to 3, in an embodiment, the spreader 10 is further provided with an adapter 620. The lifting appliance 10 is connected to the crane through the adapter 620, so that the connection stability between the lifting appliance and the crane is improved, and the lifting operation is more stable and reliable.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A spreader, comprising:

the transverse beams (100), wherein at least two transverse beams (100) are arranged at intervals along the first direction; each cross beam (100) is provided with a connecting part (110) for connecting with a weight;

the driving mechanism (200) comprises a driving piece (210) and a transmission assembly (220) connected with the driving piece (210), wherein two cross beams (100) are respectively connected with two ends of the transmission assembly (220); the driving mechanism (200) drives the two cross beams (100) to do opposite movement simultaneously through the transmission assembly (220).

2. The spreader of claim 1, wherein the number of the connection portions (110) is plural, and the plural connection portions (110) are disposed on each of the beams (100) at intervals along the extending direction of the beams (100).

3. The spreader of claim 1, wherein the transmission assembly (220) comprises a drive bar (221) and two drive blocks (222) arranged in the first direction; in the first direction, the threads at the two ends of the driving rod (221) are opposite in rotation direction; the two driving blocks (222) are respectively connected with the two ends of the driving rod (221) in a threaded manner; the two cross beams (100) are connected with the two driving blocks (222) in a one-to-one correspondence manner;

the driving rod (221) is connected to the driving piece (210), the driving piece (210) is used for driving the driving rod (221) to rotate around the axis of the driving rod, two driving blocks (222) are driven to do opposite movement at the same time, and the cross beam (100) is driven by the driving blocks (222) to move synchronously.

4. A spreader according to claim 3, characterized in that the transmission assembly (220) further comprises two transmission wheels (223) arranged in a third direction, and that the two transmission wheels (223) engage the transmission; the third direction is perpendicular to the first direction;

one of the driving wheels (223) is connected with the driving piece (210), and the other driving wheel (223) is connected with the driving rod (221); the driving piece (210) drives the driving rod (221) to rotate through the driving wheel (223).

5. The spreader of claim 4, wherein the driving wheel (223) is a bevel gear, and the axial directions of the two bevel gears are perpendicular.

6. The spreader of claim 1, further comprising a guide (300), the cross beam (100) being slidably connected to the guide (300).

7. The spreader of claim 6, wherein at least one end of the guide (300) is provided with a first stop (400), the first stop (400) being adapted to abut the cross beam (100).

8. The spreader of claim 1, further comprising a balance shaft (530), a handling frame (520) and a weight (510), the handling frame (520) and the weight (510) being located at both ends of the balance shaft (530) in a second direction; the operating frame (520), the counterweight (510) and the two cross beams (100) are distributed at intervals along the circumferential direction of the driving piece (210);

the weight (510) is configured to operably move along an axial direction of the balance shaft (530); the second direction is perpendicular to the first direction.

9. The spreader of claim 8, further comprising a second stop (540), the second stop (540) being pressed against the balance shaft (530) when the second stop (540) is in a locked state; the second limiting part (540) is abutted with the weight (510);

when the second limiting part (540) is in an unlocking state, the second limiting part (540) is connected with the balance shaft (530) in a sliding mode.

10. Crane, characterized by comprising a spreader (10) according to any one of claims 1-9.

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