Adjustable hoisting device special for crown block

Abstract

The utility model discloses a kind of adjustable hoisting devices special for crown block, including girder, counterweight box, vice beam and at least two rope parts, girder is connected with the sling of hook for hanging in crown block, counterweight box and vice beam are connected with girder, counterweight box is loaded with multiple counterweight, vice beam is opened with multiple groups of lifting eye, multiple groups of lifting eye are sequentially distributed according to the direction of far from counterweight box, at least two rope parts are used to connect in one group of multiple groups of lifting eye of vice beam, at least two rope parts are used to connect the hoisting object to be hoisted, wherein, under the condition that sling is hung in the hook of crown block and hoisting object is connected with rope part, counterweight loaded in counterweight box can be adjusted to vice beam along horizontal distribution.This device can be applied in the position reached by hoisting heavy object exceeds the original rectangular working range of crown block, can effectively expand the working range of crown block, can also evade obstacle in the situation that there is obstacle above hoisting object, hoisting object is stable, not swing deviation, effectively improve the working efficiency of crown block.

Description

Technical Field

[0001] This utility model relates to the field of overhead crane hoisting technology, and in particular to an adjustable hoisting device specifically for overhead cranes. Background Technology

[0002] An overhead crane is a bridge-type crane that runs on elevated tracks. It consists of several parts, including the trolley, hoisting mechanism, auxiliary trolley, trolley traveling mechanism, and operator's cab. The trolley moves longitudinally along the tracks on both sides of the elevated structure, while the auxiliary trolley moves laterally along the tracks on the bridge, thus forming a rectangular working range. This working range is also the maximum area that the overhead crane can reach when lifting heavy objects.

[0003] In actual work, there are situations where the location to be hoisted is beyond the working range of the overhead crane; or, although the location to be hoisted is within the working range of the overhead crane, there are obstacles above the location, and the hoisted object cannot be directly placed in place, so the obstacles need to be avoided, but ordinary overhead crane hooks cannot achieve this goal. Utility Model Content

[0004] To address the aforementioned issues, this application provides an adjustable hoisting device specifically designed for overhead cranes.

[0005] This application provides an adjustable hoisting device for overhead cranes, including a main beam, a counterweight box, a secondary beam, and at least two ropes. The main beam is connected to a sling for suspending the crane's hook. The counterweight box is connected to the main beam and contains multiple counterweight blocks. The secondary beam is connected to the main beam and has multiple sets of lifting holes arranged sequentially away from the counterweight box. The lifting holes and the counterweight box are located on opposite sides of the main beam. At least two ropes are used to connect to one set of lifting holes on the secondary beam and to connect the load to be hoisted. Under the condition that the sling is suspended from the crane's hook and the load is connected to the ropes, the counterweight blocks in the counterweight box can be adjusted to be horizontally distributed along the secondary beam.

[0006] In some embodiments, the main beam is provided with ear plates on both opposite sides, and the two ends of the sling are respectively connected to the ear holes of the two ear plates.

[0007] In some implementations, the sub-beam is connected to the counterweight box.

[0008] In some implementations, the bottom end of the sub-beam is flush with the bottom end of the counterweight box.

[0009] In some implementations, the counterweight box has an opening at the top for the counterweight to enter and exit.

[0010] In some implementations, the counterweight is rectangular in shape, and the cavity of the counterweight box is also rectangular.

[0011] In some implementations, the secondary beam is spaced apart from the main beam, and a reinforcing bar connects the secondary beam and the main beam to achieve the connection between the secondary beam and the main beam.

[0012] In some implementations, the rope is a steel wire rope.

[0013] In some implementations, the counterweight box is welded to the main beam.

[0014] In some implementations, the sub-beam is welded to the counterweight box.

[0015] The beneficial effects of this application are as follows: It provides an adjustable hoisting device specifically for overhead cranes, including a main beam, a counterweight box, a secondary beam, and at least two ropes. The device is suspended from the hook of the overhead crane via slings connected to the main beam, allowing the overhead crane to move the device together. The main beam, secondary beam, and counterweight box constitute the main structure of the device. The counterweight box is connected to the main beam and is located on one side of the main beam. Multiple sets of lifting holes are provided on the secondary beam, distributed sequentially away from the counterweight box. During actual hoisting, a set of lifting holes is selected based on the specific location of the object to be hoisted, and the device is installed in that set of lifting holes. The corresponding number of ropes are used to hook the load to the ropes. The counterweights in the counterweight box are adjusted, and a trial lift is conducted to adjust the counterweights until the sub-beams are horizontally distributed during lifting. At this point, the device is in a horizontal and balanced state, and the load can be transported to its destination using a crane. This device can be used when lifting heavy objects to locations beyond the original rectangular working range of the crane, effectively expanding the crane's working range. It can also avoid obstacles when there are obstacles above the load. During lifting, the load is stable and does not sway or deviate, effectively improving the crane's working efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0017] Figure 1 This application provides a structural schematic diagram of an adjustable hoisting device specifically for overhead cranes.

[0018] Attached diagram labels: 100-Main beam, 110-Lifting sling, 120-Ear plate, 200-Counterweight box, 210-Counterweight block, 220-Box opening, 300-Secondary beam, 310-Lifting hole, 320-Reinforcing rod, 400-Rope, 10-Crane hook, 20-Lifted object. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0021] This application discloses an adjustable hoisting device for overhead cranes, hereinafter referred to as the device. The device is used when the location to be hoisted is beyond the working range of the overhead crane; or, although the location to be hoisted is within the working range of the overhead crane, there is an obstacle above the location, and the hoisted object 20 cannot be directly positioned and needs to avoid the obstacle, but a general overhead crane hook cannot achieve this goal.

[0022] Please refer to Figure 1 The device includes a main beam 100, a counterweight box 200, a secondary beam 300, and at least two ropes 400. The counterweight box 200 and the secondary beam 300 are both connected to the main beam 100. The main beam 100, the secondary beam 300, and the counterweight box 200 constitute the main structure of the device. The ropes 400 are connected to the secondary beam 300 and are used to connect to the suspended object 20. The main beam 100 is connected to a sling 110, which is suspended from the hook 10 of the overhead crane, so that the overhead crane moves the device together.

[0023] Please refer to Figure 1 The sub-beam 300 has multiple sets of lifting holes 310, and the number of holes in each set of lifting holes 310 corresponds to the number of ropes 400. At least two ropes 400 are used to connect to one of the multiple sets of lifting holes 310 of the sub-beam 300, and at least two ropes 400 are used to connect to the load 20 to be lifted. Figure 1 The demonstrated solution uses two ropes 400 connected to the suspended object 20 to lift it when the overhead crane lifts the device. In more feasible implementations, the number of ropes 400 can be adjusted, for example, the suspended object 20 can be lifted simultaneously using three ropes 400.

[0024] Please refer to Figure 1 , Figure 1The counterweight box 200 and lifting holes 310 are located on opposite sides of the main beam 100. Multiple sets of lifting holes 310 are distributed in sequence in the direction away from the counterweight box 200. The counterweight box 200 supports multiple counterweight blocks 210. During actual hoisting, the overhead crane hook 10 is moved to the vicinity of the load 20. Based on the specific location of the load 20, a set of lifting holes 310 is selected from multiple sets of lifting holes 310. A corresponding number of ropes 400 are installed in this set of lifting holes 310, and the load 20 is hooked to the ropes 400. Next, the counterweights 210 in the counterweight box 200 are adjusted. Specifically, a trial lift is used to adjust the number, weight, and distribution of the counterweights 210 in the counterweight box 200. The overhead crane is used to perform a trial lift of the device and the load 20. If the sub-beam 300 is still not horizontal when lifted, the overhead crane is lowered, and the counterweights 210 are adjusted until the sub-beam 300 is horizontally distributed during the trial lift, and the device is in a horizontal and balanced state overall. Finally, the overhead crane can be used to transport the load 20 to its destination.

[0025] When using this device, the weight and number of counterweights 210 placed in the counterweight box 200 need to be adjusted according to the specific weight of the load 20 to ensure that the load 20 is stable and does not sway or deviate during the lifting operation. This device can use a trial lift to adjust the counterweights 210 in the counterweight box 200, reducing the difficulty of adjusting the counterweights 210.

[0026] As shown above, under vertical projection, the lifting hole 310 of the secondary beam 300 is relatively far from the connection position between the sling 110 and the main beam 100. This device can effectively expand the working range of the overhead crane through the lifting hole 310 of the secondary beam 300. When the location to be lifted exceeds the original rectangular working range of the overhead crane, this device can smoothly lift the load 20; it can also avoid obstacles when there are obstacles above the load 20. When lifting, the load 20 is stable and does not sway or deviate, effectively improving the working efficiency of the overhead crane.

[0027] In some embodiments, the rope 400 is a steel wire rope, one end of which is connected to the lifting hole 310 of the sub-beam 300, and the other end of which is a hook for hooking the object 20 to be lifted.

[0028] In some implementation methods, please refer to Figure 1 The main beam 100 is provided with ear plates 120. The two ear plates 120 are located on both sides of the main beam 100. The ear plates 120 are provided with ear holes. The two ends of the sling 110 are connected to the ear holes of the two ear plates 120 respectively. The crane hook 10 hooks the sling 110 and lifts the device in this way.

[0029] In some implementation methods, please refer to Figure 1The secondary beam 300 is also connected to the counterweight box 200 to increase the overall structural stability of the device. The secondary beam 300 and the counterweight box 200 can be connected by welding. Similarly, the counterweight box 200 and the main beam 100 can also be connected by welding.

[0030] Regarding the connection method between the secondary beam 300 and the main beam 100, please refer to the following in some implementation methods. Figure 1 The secondary beam 300 is spaced apart from the main beam 100, and a reinforcing rod 320 connects the secondary beam 300 and the main beam 100, thereby separating the lifting hole 310 of the secondary beam 300 from the main beam 100 by a considerable distance.

[0031] In some implementation methods, please refer to Figure 1 The bottom end of the sub-beam 300 is flush with the bottom end of the counterweight box 200.

[0032] In some implementation methods, please refer to Figure 1 The opening 220 is located at the top of the counterweight box 200, and the counterweight block 210 enters and exits the counterweight box 200 through the opening 220.

[0033] In some implementation methods, please refer to Figure 1 The counterweight 210 is rectangular in shape, and the cavity of the counterweight box 200 is also rectangular. During lifting, the counterweight 210 will not shake inside the counterweight box 200.

[0034] It should be added that the inventors have applied this device in actual production and achieved the expected results.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0037] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An adjustable hoisting device specifically for overhead cranes, characterized in that, include: The main beam is connected to slings, which are used to suspend the crane hooks. A counterweight box is connected to the main beam, and the counterweight box holds multiple counterweight blocks; A secondary beam is connected to the main beam. The secondary beam has multiple sets of lifting holes, which are distributed sequentially in a direction away from the counterweight box. The lifting holes and the counterweight box are located on opposite sides of the main beam. At least two ropes are used to connect to one of the multiple sets of lifting holes on the sub-beam, and at least two ropes are used to connect to the load to be lifted. Wherein, under the condition that the sling is suspended from the hook of the crane and the suspended object is connected to the rope, the counterweight block installed in the counterweight box can be adjusted to be distributed horizontally along the sub-beam.

2. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The main beam is provided with ear plates on both sides, and the two ends of the suspension cable are respectively connected to the ear holes of the two ear plates.

3. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The sub-beam is connected to the counterweight box.

4. The adjustable hoisting device for overhead cranes as described in claim 3, characterized in that, The bottom end of the sub-beam is flush with the bottom end of the counterweight box.

5. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The counterweight box has an opening at the top for the counterweight to enter and exit.

6. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The counterweight is rectangular in shape, and the cavity of the counterweight box is also rectangular.

7. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The secondary beam is spaced apart from the main beam, and a reinforcing rod connects the secondary beam and the main beam to achieve the connection between the secondary beam and the main beam.

8. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The rope is a steel wire rope.

9. The adjustable hoisting device for overhead cranes as described in claim 1, characterized in that, The counterweight box is welded to the main beam.

10. The adjustable hoisting device for overhead cranes as described in claim 3, characterized in that, The sub-beam is welded to the counterweight box.

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