Combined lifting appliance of bridge crane

Abstract

The utility model provides a combined lifting appliance of a bridge crane. The combined lifting appliance comprises a mounting seat, a lifting connecting seat arranged on the upper side of the mounting seat, telescopic rods uniformly arranged on the side part of the mounting seat, a driving motor for driving the telescopic rods to stretch out and draw back, and vacuum chucks arranged at the outer ends of the telescopic rods, a cavity is formed in the mounting seat, a channel corresponding to the telescopic rod is formed in the side wall of the mounting seat, and the inner end of the telescopic rod penetrates through the through hole and extends into the cavity; a rotating disc is arranged in the cavity, an output shaft of the driving motor is in transmission connection with the rotating disc, a sliding part is arranged at the inner end of the telescopic rod, arc-shaped rails corresponding to the sliding part are arranged on the rotating disc, straight rails corresponding to the sliding part are arranged on the inner side of the mounting base, and the arc-shaped rails correspond to the straight rails one to one; and the projection of the central shaft of the rotating disc falls on the extension line of the straight track. According to the combined lifting appliance of the bridge crane, the position of the vacuum suction cup can be adjusted through stretching and retracting of the telescopic rod so as to adapt to workpieces to be lifted of different specifications, and manual adjustment is not needed.

Description

Technical Field

[0001] This utility model relates to a lifting device, specifically, to a combined lifting device for a bridge crane. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. The bridge frame of a bridge crane runs longitudinally along tracks laid on elevated structures on both sides, making full use of the space beneath the bridge frame for material handling without obstruction from ground equipment. Bridge cranes are the most widely used and numerous type of lifting machinery. To meet the lifting needs of different workpieces, bridge cranes are equipped with different types of lifting devices. When lifting large workpieces, multiple lifting mechanisms are often combined to form a modular lifting device. For example, Chinese Patent CN118790870A discloses a modular lifting device for lifting long and narrow components. However, this device requires manual adjustment of the distance between the two sets of clamping rods according to the workpiece specifications during use.

[0003] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a combined lifting device for bridge cranes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A combined lifting device for a bridge crane includes a mounting base, a lifting connecting base disposed on the upper side of the mounting base, telescopic rods evenly distributed on the sides of the mounting base, a drive motor for driving the telescopic rods to extend and retract, and a vacuum suction cup with the outer end of the telescopic rod. The mounting base has an internal cavity, and the side wall of the mounting base has a channel corresponding to the telescopic rod. The inner end of the telescopic rod extends into the cavity through a through hole. A rotating disk is disposed in the cavity, and the output shaft of the drive motor is connected to the rotating disk. A sliding element is disposed at the inner end of the telescopic rod, and an arc-shaped track is disposed on the rotating disk corresponding to the sliding element. A straight track is disposed on the inner side of the mounting base corresponding to the sliding element. The arc-shaped track and the straight track correspond one-to-one, and the projection of the central axis of the rotating disk falls on the extension line of the straight track.

[0007] The sliding component includes an upper sliding block disposed on the upper side of the telescopic rod and a lower sliding block disposed on the lower side of the telescopic rod. The straight track is a strip-shaped groove, and the lower side of the lower sliding block is inserted into the strip-shaped groove and slides in cooperation with the strip-shaped groove. The arc-shaped track is a stroke through hole, and the side wall of the upper sliding block slides in cooperation with the inner wall of the stroke through hole.

[0008] The top surface of the strip groove is provided with a limiting flange corresponding to the upper side of the lower sliding block, and the lower side of the stroke through hole is provided with a limiting flange corresponding to the lower side of the upper sliding block.

[0009] The rotating disk is rotatably connected to the inner cavity of the mounting base.

[0010] A number of universal balls are evenly arranged on the upper and / or lower sides of the rotating disk, and each universal ball is tangent to the top or bottom surface of the inner cavity of the mounting base.

[0011] The top or bottom surface of the mounting base cavity is equipped with an arc-shaped slide rail corresponding to the universal ball bearings.

[0012] The lifting connection seat includes vertical supports symmetrically arranged on both sides of the drive motor. The vertical supports have a pulley cavity inside, and the lifting pulley is located inside the pulley cavity and is rotatably connected to the inner wall of the pulley cavity. An arc-shaped notch is opened at the top of the pulley cavity, and the wire rope passes through the arc-shaped notch to connect to the lifting pulley.

[0013] Compared to existing technologies, the advantages of this invention are as follows: This invention provides a combined lifting device for a bridge crane that allows the position of the vacuum suction cup to be adjusted by extending and retracting the telescopic rod, thus adapting to workpieces of different sizes without manual adjustment and reducing manual labor. In specific use, the drive motor drives the rotating disk to rotate, causing the telescopic rod to extend and retract along the channel of the mounting base, thereby adapting to workpieces of different sizes; the crane's lifting mechanism is connected to the lifting connecting seat to lift heavy objects. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the mounting base in this utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of the mounting base in this utility model.

[0017] Figure 4 This is a schematic diagram of the rotating disk in this utility model.

[0018] In the diagram: 1. Mounting base; 2. Telescopic rod; 3. Drive motor; 4. Vacuum suction cup; 5. Vertical support; 6. Arc-shaped notch; 7. Channel; 8. Rotary disk; 9. Arc-shaped track; 10. Universal ball bearing; 11. Limiting flange. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0021] like Figure 1-4 As shown, a combined lifting device for a bridge crane includes a mounting base 1, a lifting connecting seat disposed on the upper side of the mounting base 1, telescopic rods 2 evenly distributed on the side of the mounting base 1, a drive motor 3 for driving the telescopic rods 2 to extend and retract, and a vacuum suction cup 4 with the outer end of the telescopic rods 2. The mounting base 1 has an internal cavity, and the side wall of the mounting base 1 has a channel 7 corresponding to the telescopic rods 2. The inner end of the telescopic rods 2 passes through the through hole and extends into the cavity. A rotating disk 8 is disposed within the cavity. The output shaft of the drive motor 3 is connected to the rotating disk 8. A sliding element is disposed at the inner end of the telescopic rods 2. An arc-shaped track 9 is disposed on the rotating disk 8 corresponding to the sliding element. A straight track is disposed on the inner side of the mounting base 1 corresponding to the sliding element. The arc-shaped track 9 corresponds one-to-one with the straight track. The projection of the central axis of the rotating disk 8 falls on the extension line of the straight track. Specifically, the straight track and the arc-shaped track are evenly arranged in a circle around the rotation center of the rotating disk. When the rotating disk rotates, the telescopic rods move along the straight track.

[0022] The combined lifting device of this bridge crane can adjust the position of the vacuum suction cup by extending and retracting the telescopic rod to accommodate workpieces of different sizes, eliminating the need for manual adjustment and reducing labor. In actual use, the drive motor drives the rotary table to rotate, causing the telescopic rod to extend and retract along the channel of the mounting base, thus accommodating workpieces of different sizes; the crane's lifting mechanism is connected to the lifting connecting seat to lift heavy objects.

[0023] In one embodiment, the sliding member includes an upper sliding block disposed on the upper side of the telescopic rod 2 and a lower sliding block disposed on the lower side of the telescopic rod 2. The straight track is a strip-shaped groove, and the lower side of the lower sliding block is inserted into the strip-shaped groove and slides in cooperation with the strip-shaped groove. The arc-shaped track 9 is a stroke through hole, and the side wall of the upper sliding block slides in cooperation with the inner wall of the stroke through hole. The upper and lower sliding structure fully ensures the stability of the structure.

[0024] In one embodiment, the top surface of the strip groove is provided with a limiting flange 11 corresponding to the upper side of the lower sliding block, and the lower side of the travel through hole is provided with a limiting flange 11 corresponding to the lower side of the upper sliding block to prevent the sliding block from slipping off.

[0025] In one embodiment, the rotating disk 8 is rotatably connected to the inner cavity of the mounting base 1. Specifically, a common rotatable connection method can be adopted to facilitate the rotation of the rotating disk within the mounting base.

[0026] In one embodiment, a plurality of universal balls 10 are evenly arranged on the upper and / or lower sides of the rotating disk 8, and each universal ball 10 is tangent to the top or bottom surface of the inner cavity of the mounting base 1, thereby reducing friction during the rotation of the rotating disk.

[0027] In one embodiment, the top or bottom surface of the inner cavity of the mounting base 1 is provided with an arc-shaped slide rail corresponding to the universal ball 10, which further improves the stability of the mechanism.

[0028] In one embodiment, the lifting connection seat includes vertical supports 5 symmetrically arranged on both sides of the drive motor 3. The vertical supports 5 have a pulley cavity inside. The lifting pulley is located inside the pulley cavity and is rotatably connected to the inner wall of the pulley cavity. An arc-shaped notch 6 is opened at the top of the pulley cavity. The wire rope passes through the arc-shaped notch 6 and connects to the lifting pulley, which facilitates the connection between the winch wire rope and the pulley.

[0029] The above embodiments can be combined with each other.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A modular spreader for a bridge crane, characterized in that: The device includes a mounting base, a lifting connecting base located on the upper side of the mounting base, telescopic rods evenly distributed on the sides of the mounting base, a drive motor for extending and retracting the telescopic rods, and a vacuum suction cup with the outer end of the telescopic rod. The mounting base has an internal cavity, and the side wall of the mounting base has a channel corresponding to the telescopic rod. The inner end of the telescopic rod extends into the cavity through a through hole. A rotating disk is installed inside the cavity. The output shaft of the drive motor is connected to the rotating disk. A sliding element is installed at the inner end of the telescopic rod. An arc-shaped track is installed on the rotating disk corresponding to the sliding element. A straight track is installed on the inner side of the mounting base corresponding to the sliding element. The arc-shaped track and the straight track correspond one-to-one. The projection of the central axis of the rotating disk falls on the extension line of the straight track.

2. A combined spreader of an overhead travelling crane according to claim 1, characterized in that: The sliding component includes an upper sliding block disposed on the upper side of the telescopic rod and a lower sliding block disposed on the lower side of the telescopic rod. The straight track is a strip-shaped groove, and the lower side of the lower sliding block is engaged with the strip-shaped groove. The arc-shaped track is a stroke through hole, and the side wall of the upper sliding block is engaged with the inner wall of the stroke through hole.

3. A combined spreader of an overhead travelling crane according to claim 2, characterized in that: The top surface of the strip groove is provided with a limiting flange corresponding to the upper side of the lower sliding block, and the lower side of the stroke through hole is provided with a limiting flange corresponding to the lower side of the upper sliding block.

4. A combined spreader of an overhead travelling crane according to claim 3, characterized in that: The rotating disk is rotatably connected to the inner cavity of the mounting base.

5. The combined lifting device for a bridge crane according to claim 4, characterized in that: A number of universal balls are evenly arranged on the upper and / or lower sides of the rotating disk, and each universal ball is tangent to the top or bottom surface of the inner cavity of the mounting base.

6. The combined lifting device for a bridge crane according to claim 5, characterized in that: The top or bottom surface of the mounting base cavity is equipped with an arc-shaped slide rail corresponding to the universal ball bearings.

7. The combined lifting device for a bridge crane according to claim 6, characterized in that: The lifting connection seat includes vertical supports symmetrically arranged on both sides of the drive motor. The vertical supports have a pulley cavity inside, and the lifting pulley is located inside the pulley cavity and is rotatably connected to the inner wall of the pulley cavity. An arc-shaped notch is opened at the top of the pulley cavity, and the wire rope passes through the arc-shaped notch to connect to the lifting pulley.

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