Crane fixed pulley convenient replacement device and method

Abstract

The invention discloses a convenient crane fixed pulley replacing device and method.The convenient crane fixed pulley replacing device comprises replacing supports, lifting assemblies, connecting assemblies and limiting assemblies, the replacing supports are arranged on the left side and the right side of a fixed pulley support through bolts, and the lifting assemblies are arranged on the two sides of the replacing supports and used for dragging a steel wire rope to be lifted; the lifting assembly is fixedly connected with the fixed pulley cover through the connecting assembly and used for synchronously lifting the lifting assembly, and the limiting assembly is detachably arranged at the top of the replacement support and used for limiting the lifting assembly. All the steel wire ropes on the fixed pulley can be lifted at the same time, the time for replacing the fixed pulley is greatly shortened, the working efficiency is effectively improved, the steel wire ropes separated from the rope groove of the fixed pulley can be limited, the steel wire ropes do not need to be additionally fixed, and the safety for replacing the fixed pulley block can be improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of crane fixed pulley replacement, and particularly relates to a crane fixed pulley convenient replacement device and method. BACKGROUND

[0002] With the development of the hoisting industry, the crane is more and more widely used, and its lifting capacity is constantly rising, and the use frequency is also increasing day by day. Under this background, as a key component of the crane, the fixed pulley is subjected to high load operation for a long time and the steel wire rope is frequently lifted and lowered, resulting in accelerated wear of the fixed pulley, and the number of replacement of the fixed pulley is also greatly increased.

[0003] However, the current replacement process of the fixed pulley faces many difficult problems. On the one hand, the replacement of the fixed pulley requires a lot of time, which seriously affects the normal use efficiency of the crane; on the other hand, there is a great safety risk in the fixed ring after the steel wire rope is separated from the rope groove of the upper pulley, which brings potential threat to the personal safety of the operator and the stable operation of the equipment. SUMMARY

[0004] In order to at least partially solve the technical problems existing in the prior art, the present application provides a crane fixed pulley convenient replacement device and method.

[0005] In one aspect of the present application, a crane fixed pulley convenient replacement device is provided, which comprises a replacement support, a lifting assembly, a connecting assembly and a limiting assembly, the replacement support is arranged on the left and right sides of the fixed pulley support through bolts, the lifting assembly is arranged on the two sides of the replacement support for dragging the steel wire rope to lift, the lifting assembly is fixedly connected with the fixed pulley cover through the connecting assembly for synchronously lifting the lifting assembly, and the limiting assembly is detachably arranged on the top of the replacement support for limiting the lifting assembly. The replacement support comprises two sliding plates and a connecting plate, the top of the two sliding plates is fixed on the connecting plate through bolts, the bottom of the sliding plate is fixed with the fixed pulley support through bolts, the outer side of the bottom of the sliding plate is provided with a sliding groove, and the top of the sliding plate is provided with a limiting hole, and the limiting assembly is detachably arranged in the limiting hole. The lifting assembly comprises a connecting shaft, a roller and a supporting plate, the supporting plate is welded in the middle of the connecting shaft for lifting the steel wire rope, the rollers are symmetrically sleeved on the two ends of the connecting shaft, the roller is rollingly arranged in the sliding groove, and a connecting hole is arranged on the connecting shaft between the roller and the supporting plate, one end of the connecting assembly is threadedly engaged with the connecting hole, and the other end of the connecting assembly is hingedly connected with the fixed pulley cover.

[0006] Further, in the crane fixed pulley convenient replacement device, the sliding plate is arranged in a circular arc shape, and the circular arc of the sliding plate is smoothly transitioned from a small arc to a large arc from the bottom to the top.

[0007] Further, in the crane fixed pulley convenient replacement device, the sliding groove is an upwardly inclined structure.

[0008] Further, in the crane fixed pulley convenient replacement device, the supporting plate is arranged in a circular arc shape.

[0009] Further, in the crane fixed pulley convenient replacement device, one end of the connecting assembly is a threaded rod structure for threadingly engaging with the connecting hole, and the other end of the connecting assembly is an ear plate structure for being hingedly connected with the fixed pulley cover.

[0010] Further, in the crane fixed pulley convenient replacement device, tracks are arranged on the left and right sides of the fixed pulley support, for moving the fixed pulley set left and right out of the fixed pulley support.

[0011] In another aspect of the present application, a crane fixed pulley convenient replacement method is provided, characterized in that the crane fixed pulley convenient replacement method comprises: When the fixed pulley needs to be replaced, a sliding plate set matching the arc of the fixed pulley is assembled to form a replacement support, the bottom of the replacement support is fixedly installed on the left and right sides of the fixed pulley support through bolts, and a lifting assembly is installed at the bottom of the sliding groove of the replacement support, and the lifting assembly is connected with the fixed pulley cover through a connecting assembly; The connecting hole of the lifting tool is connected with the fixed pulley cover, the connecting bolts of the fixed pulley cover and the fixed pulley support are removed, the fixed pulley cover is driven upward by the lifting tool to move upward, the connecting assembly drives the lifting assembly to roll along the sliding groove, the supporting plate contacts the steel wire rope during the rolling of the lifting assembly along the sliding groove, and the steel wire rope is lifted until the steel wire rope is completely separated from the fixed pulley rope groove; The lifting assembly is limited by inserting the limiting assembly into the limiting hole, so that the lifting assembly cannot fall back, and the fixed pulley set is moved out of the left and right sides of the fixed pulley support along the tracks for replacement; After the replacement is completed, the limiting assembly is pulled out to release the limitation of the lifting assembly, the lifting tool is lowered to reset the lifting assembly in the sliding groove, at this time, the steel wire rope is adjusted to accurately enter the fixed pulley rope groove, and the lifting assembly is rolled to the bottom of the sliding groove by continuing to lower, at this time, the fixed pulley cover is reset and fixed by bolts, and the replaced fixed pulley is tested.

[0012] The crane fixed pulley convenient replacement device and method have the following advantages and beneficial effects: The present application can lift all steel wire ropes on the fixed pulley through the setting of the lifting assembly, greatly shortens the time for replacing the fixed pulley, effectively improves the operation efficiency, and can limit the steel wire rope after being separated from the fixed pulley rope groove through the setting of the limiting assembly, without the need of additional fixing of the steel wire rope, and can improve the safety of replacing the fixed pulley set. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings: Figure 1 Front view of crane fixed pulley convenient replacement device after installation of the present application; Figure 2 Left view of crane fixed pulley convenient replacement device after installation of the present application; Figure 3 B-B section structure schematic view of the present application; Figure 2 C-C section structure schematic view of the present application; Figure 4 Hoisting state schematic view of crane fixed pulley convenient replacement method of the present application; Figure 2 Left view of crane fixed pulley convenient replacement method of the present application; Figure 5 Schematic view of crane fixed pulley set after moving out of the present application. Figure 6 Schematic view of crane fixed pulley set after moving out of the present application. Figure 5 Left view of crane fixed pulley set after moving out of the present application. Figure 7 Schematic view of crane fixed pulley set after moving out of the present application.

[0014] Explanation of reference signs: 100: pulley cover; 200: fixed pulley support; 1: replacement support 11: sliding plate 111: sliding groove 12: connecting plate 121: limiting hole 2: lifting assembly 21: connecting shaft 211: connecting hole 22: roller 23: supporting plate 3: connecting assembly 4: limiting assembly; 5: track. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] As Figures 1 to 5As shown, the crane fixed pulley convenient replacement device of the present application comprises a replacement support 1, a lifting assembly 2, a connecting assembly 3 and a limiting assembly 4, the replacement support 1 is arranged on the left and right sides of the fixed pulley support 200 through bolts, the lifting assembly 2 is arranged on the left and right sides of the replacement support 1 and is used for dragging the steel wire rope to lift, the lifting assembly 2 is fixedly connected with the fixed pulley cover 100 through the connecting assembly 3 and is used for synchronously lifting the lifting assembly 2, the limiting assembly 4 is detachably arranged on the top of the replacement support 1 and is used for limiting the lifting assembly 2, wherein: The replacement support 1 comprises two sliding plates 11 and a connecting plate 12, the top of the two sliding plates 11 is fixed on the connecting plate 12 through bolts, the bottom of the sliding plate 11 is fixed with the fixed pulley support 200 through bolts, the outer side of the bottom of the sliding plate 11 is provided with a sliding groove 111, the top of the sliding plate 11 is provided with a limiting hole 121, and the limiting assembly 4 is detachably arranged in the limiting hole 121, so that the sliding plate 11 and the connecting plate 12 can be selected according to the diameter of the fixed pulley, and the replacement device is suitable for fixed pulleys of various specifications; The lifting assembly 2 comprises a connecting shaft 21, a roller 22 and a supporting plate 23, the supporting plate 23 is welded in the middle of the connecting shaft 21 and is used for lifting the steel wire rope, the roller 22 is symmetrically sleeved on the two ends of the connecting shaft 21, the roller 22 is rollingly arranged in the sliding groove 111, and a connecting hole 211 is arranged on the connecting shaft 21 between the roller 22 and the supporting plate 23, one end of the connecting assembly 3 is threadedly engaged with the connecting hole 211, and the other end of the connecting assembly 3 is hinged with the fixed pulley cover 100, so that the roller 22 can roll along the sliding groove 111 when the lifting assembly 2 is lifted, the supporting plate 23 always keeps the initial state, and it is ensured that the steel wire rope is arranged on the supporting plate 23.

[0017] Further, in the crane fixed pulley convenient replacement device, the sliding plate 11 is arranged in a circular arc shape, and the circular arc of the sliding plate 11 is smoothly transitioned from a small arc to a large arc from the bottom to the top.

[0018] Further, in the crane fixed pulley convenient replacement device, the sliding groove 111 is an upward inclined structure.

[0019] Further, in the crane fixed pulley convenient replacement device, the supporting plate 23 is arranged in a circular arc shape.

[0020] Further, in the crane fixed pulley convenient replacement device, one end of the connecting assembly 3 is a threaded rod structure and is used for threadedly engaging with the connecting hole 211, and the other end of the connecting assembly 3 is an ear plate structure and is used for hinging with the fixed pulley cover 100.

[0021] Further, in the crane fixed pulley convenient replacement device, tracks 5 are arranged on the left and right sides of the fixed pulley support and are used for moving the fixed pulley set left and right out of the fixed pulley support.

[0022] As a specific embodiment, in the crane fixed pulley convenient replacement device of the present application, the use method is: When the fixed pulley needs to be replaced, the slide plate 11 matching the arc of the fixed pulley is selected to assemble the replacement support 1, so that the replacement support 1 is suitable for replacing fixed pulleys of various diameters, the bottom of the replacement support 1 is fixedly installed on the left and right sides of the fixed pulley support 200 through bolts, and the lifting assembly 2 is installed at the bottom of the sliding groove 111 of the replacement support 1, the lifting assembly 2 is connected with the fixed pulley cover 100 through the connecting assembly 3, at this time, the lifting assembly 2 is not affected by the crane, and the lifting assembly 2 is not affected by the crane. The lifting tool is connected with the lifting hole of the fixed pulley cover 100, the connecting bolts of the fixed pulley cover 100 and the fixed pulley support 200 are removed, the fixed pulley cover 100 is driven upward by the lifting tool, the connecting assembly 3 drives the lifting assembly 2 to roll along the sliding groove 111, the supporting plate 23 contacts the steel wire rope during the rolling of the lifting assembly 2 along the sliding groove 111, the steel wire rope installed in the fixed pulley rope groove is arranged on the supporting plate 23 at this time, and the steel wire rope is lifted up, until the steel wire rope is completely separated from the fixed pulley rope groove. The lifting assembly 2 is limited by inserting the limiting assembly 4 into the limiting hole 121, so that the lifting assembly 2 cannot fall back, and the fixed pulley is removed from the left and right sides of the fixed pulley support 200 for replacement, the fixed pulley set is removed from the left and right sides of the fixed pulley support along the track 5 during removal, space is left for replacing the fixed pulley, and the fixed pulley set is replaced. After the replacement is completed, the limiting assembly 4 is pulled out, the limiting of the lifting assembly 2 is released, the lifting assembly 2 is lowered to reset in the sliding groove 111, at this time, the steel wire rope is adjusted, the steel wire rope is accurately arranged in the fixed pulley rope groove, the lifting assembly 2 is continuously lowered to roll to the bottom of the sliding groove 111, at this time, the fixed pulley cover 100 is reset and fixed through bolts, and the replaced fixed pulley is tested.

[0023] Another aspect of the present application provides a crane fixed pulley convenient replacement method, comprising: When the fixed pulley needs to be replaced, the slide plate 11 matching the arc of the fixed pulley is selected to assemble the replacement support 1, the bottom of the replacement support 1 is fixedly installed on the left and right sides of the fixed pulley support 200 through bolts, and the lifting assembly 2 is installed at the bottom of the sliding groove 111 of the replacement support 1, the lifting assembly 2 is connected with the fixed pulley cover 100 through the connecting assembly 3. The lifting tool is connected with the lifting hole of the fixed pulley cover 100, the connecting bolts of the fixed pulley cover 100 and the fixed pulley support 200 are removed, the fixed pulley cover 100 is driven upward by the lifting tool, the connecting assembly 3 drives the lifting assembly 2 to roll along the sliding groove 111, the supporting plate 23 contacts the steel wire rope during the rolling of the lifting assembly 2 along the sliding groove 111, and the steel wire rope is lifted up, until the steel wire rope is completely separated from the fixed pulley rope groove. The lifting assembly 2 is limited by inserting the limiting assembly 4 into the limiting hole 121, ensuring that the lifting assembly 2 cannot fall back, and the fixed pulley is removed from the left and right sides of the fixed pulley support 200 for replacement, and the fixed pulley set is removed from the left and right sides of the fixed pulley support along the track 5 to provide space for replacing the fixed pulley, and the pulley set is replaced; After replacement is completed, the limiting assembly 4 is pulled out to release the limitation on the lifting assembly 2, the lifting tool is lowered to reset the lifting assembly 2 into the sliding groove 111, at this time, the steel wire rope is adjusted to accurately enter the fixed pulley rope groove, and the lifting assembly 2 is continuously lowered to roll to the bottom of the sliding groove 111, at this time, the pulley cover 100 is reset and fixed by bolts, and the replaced fixed pulley is tested.

[0024] In summary, compared with the prior art, the crane fixed pulley convenient replacement device and method has the following advantages and beneficial effects: the fixed pulley can be lifted by the lifting assembly, the time for replacing the fixed pulley is greatly shortened, the work efficiency is effectively improved, the steel wire rope after being separated from the fixed pulley rope groove can be limited by the limiting assembly, the steel wire rope does not need to be additionally fixed, and the safety of replacing the fixed pulley set can be improved.

[0025] It should be noted that, in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. In addition, "front", "back", "left", "right", "up", "down" in this text are with reference to the placement state shown in the drawings.

[0026] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A crane fixed pulley convenient replacement device, characterized in that, The crane fixed pulley convenient replacement device includes a replacement support, a lifting assembly, a connecting assembly and a limiting assembly, the replacement support is arranged on the left and right sides of the fixed pulley support through bolts, the lifting assembly is arranged on the two sides of the replacement support and is used for dragging the steel wire rope to lift, the lifting assembly is fixedly connected with the fixed pulley cover through the connecting assembly and is used for synchronously lifting the lifting assembly, the limiting assembly is detachably arranged on the top of the replacement support and is used for limiting the lifting assembly, and the replacement support includes two sliding plates and a connecting plate. The replacement support includes two sliding plates and a connecting plate, the top of the two sliding plates is fixed on the connecting plate through bolts, the bottom of the sliding plate is fixed with the fixed pulley support through bolts, the outer side of the bottom of the sliding plate is provided with a sliding groove, the top of the sliding plate is provided with a limiting hole, and the limiting assembly is detachably arranged in the limiting hole. The lifting assembly includes a connecting shaft, a roller and a supporting plate, the supporting plate is welded in the middle of the connecting shaft and is used for lifting the steel wire rope, the rollers are symmetrically sleeved at the two ends of the connecting shaft, the roller is rollingly arranged in the sliding groove, and a connecting hole is arranged on the connecting shaft between the roller and the supporting plate.

2. A crane fixed pulley convenient replacement device according to claim 1, characterized in that, The sliding plate is arranged in a circular arc shape, and the circular arc of the sliding plate smoothly transitions from a small arc to a large arc from the bottom to the top.

3. A crane fixed pulley convenient replacement device according to claim 1, characterized in that, The sliding groove is an upward inclined structure.

4. The crane fixed pulley convenient replacement device according to claim 1, characterized in that, The supporting plate is arranged in a circular arc shape.

5. A crane fixed pulley convenient replacement device according to claim 1, characterized in that, One end of the connecting assembly is a threaded rod structure and is used for threadingly engaging with the connecting hole, and the other end of the connecting assembly is an ear plate structure and is used for hingedly connecting with the fixed pulley cover.

6. A crane fixed pulley convenient replacement device according to claim 1, characterized in that, Tracks are arranged on the left and right sides of the fixed pulley support and are used for moving the fixed pulley set left and right out of the fixed pulley support.

7. A method for expedited replacement of a crane trolley sheave, implemented using the expedited replacement device of any one of claims 1 to 6, characterized in that, The crane fixed pulley convenient replacement method includes the following steps. When the fixed pulley needs to be replaced, the sliding plate group matching the arc of the fixed pulley is assembled to form a replacement support, the bottom of the replacement support is fixedly installed on the left and right sides of the fixed pulley support through bolts, and the lifting assembly is installed at the bottom of the sliding groove of the replacement support, and the lifting assembly is connected with the fixed pulley cover through the connecting assembly. The lifting tool is connected with the lifting hole of the fixed pulley cover, the connecting bolts of the fixed pulley cover and the fixed pulley support are removed, the fixed pulley cover is driven upward by the lifting tool to move upward, the connecting assembly drives the lifting assembly to roll along the sliding groove, the supporting plate contacts the steel wire rope during the rolling of the lifting assembly along the sliding groove, the steel wire rope is lifted, and the steel wire rope is completely separated from the fixed pulley rope groove. The limiting assembly is inserted into the limiting hole to limit the lifting assembly, so that the lifting assembly cannot fall back, the fixed pulley set is moved out of the left and right sides of the fixed pulley support along the tracks, and the pulley set is replaced. After the replacement is completed, the limiting assembly is pulled out to release the limitation of the lifting assembly, the lifting tool is lowered to reset the lifting assembly in the sliding groove, at this time, the steel wire rope is adjusted to accurately enter the fixed pulley rope groove, the lifting assembly is continuously rolled to the bottom of the sliding groove, at this time, the pulley cover is reset and fixed through bolts, and the replaced fixed pulley is tested.

Images