Convenient crane fixed pulley replacement device and method

Abstract

The application discloses a crane fixed pulley convenient replacement device and method, the crane fixed pulley convenient replacement device includes replacement support, lifting assembly, connecting assembly and 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, and the limiting assembly is detachably arranged on the top of the replacement support and is used for limiting the lifting assembly. The application can simultaneously lift all the steel wire ropes on the fixed pulley, greatly shortens the time for replacing the fixed pulley, effectively improves the operation efficiency, can limit the steel wire rope after being separated from the fixed pulley rope groove, does not need to additionally fix the steel wire rope, and can improve the safety of replacing the fixed pulley set.

Description

Technical Field

[0001] This invention belongs to the field of crane fixed pulley replacement technology, and particularly relates to a convenient crane fixed pulley replacement device and method. Background Technology

[0002] With the development of the crane industry, cranes are being used more and more widely, their lifting capacity is constantly increasing, and their usage frequency is also increasing day by day. Against this backdrop, as a key component of cranes, the fixed pulley is subjected to high loads for a long time and the frequent lifting and lowering movements of the wire rope, resulting in accelerated wear and a significant increase in the number of times the fixed pulley needs to be replaced.

[0003] However, the process of replacing fixed pulleys currently faces many thorny issues. On the one hand, replacing fixed pulleys requires a lot of time, seriously affecting the normal operating efficiency of the crane; on the other hand, the fixing point after the wire rope detaches from the upper pulley groove poses a significant safety risk, posing a potential threat to the personal safety of operators and the stable operation of the equipment. Summary of the Invention

[0004] To at least partially solve the technical problems existing in the prior art, the present invention provides a convenient replacement device and method for crane fixed pulleys.

[0005] In one aspect of the invention, a convenient replacement device for a crane fixed pulley is provided, comprising a replacement support, a lifting assembly, a connecting assembly, and a limiting assembly. The replacement support is bolted to the left and right sides of the fixed pulley support. The lifting assembly is disposed on both sides of the replacement support and is used to lift the pulley by dragging a wire rope. The lifting assembly is fixedly connected to the fixed pulley cover through the connecting assembly for synchronous lifting of the lifting assembly. The limiting assembly is detachably disposed on the top of the replacement support for limiting the lifting assembly, wherein:

[0006] The replacement support includes two slide plates and a connecting plate. The tops of the two slide plates are symmetrically fixed to the connecting plate by bolts. The bottoms of the slide plates are fixed to the fixed pulley support by bolts. A sliding groove is provided on the outer side of the bottom of the slide plate. A limit hole is provided on the top of the slide plate. The limit component is detachably installed in the limit hole.

[0007] The lifting assembly includes a connecting shaft, rollers, and a support plate. The support plate is welded to the middle of the connecting shaft and is used to lift the wire rope. The rollers are symmetrically sleeved at both ends of the connecting shaft and are rolled in the groove. A connecting hole is provided on the connecting shaft between the rollers and the support plate. One end of the connecting assembly is threaded into the connecting hole, and the other end of the connecting assembly is hinged to the fixed pulley cover.

[0008] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, the slide plate is arranged in an arc shape, and the arc of the slide plate smoothly transitions from a small arc to a large arc from the bottom to the top.

[0009] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, the slide groove has an upward-sloping structure.

[0010] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, the pallet is arranged in an arc shape.

[0011] Furthermore, in the above-mentioned convenient replacement device for the fixed pulley of the crane, one end of the connecting component is a threaded rod structure for threaded engagement with the connecting hole, and the other end of the connecting component is an ear plate structure for hinged connection with the fixed pulley cover.

[0012] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, rails are provided on the left and right sides of the fixed pulley support for the fixed pulley assembly to move out of the fixed pulley support to the left and right.

[0013] In another aspect of the present invention, a convenient method for replacing a crane fixed pulley is provided, characterized in that the convenient method for replacing a crane fixed pulley includes:

[0014] When the fixed pulley needs to be replaced, select a skateboard that matches the curvature of the fixed pulley to assemble a replacement support. Fix the bottom of the replacement support to the left and right sides of the fixed pulley support with bolts, and install the lifting component at the bottom of the replacement support groove. Connect the lifting component to the fixed pulley cover through the connecting component.

[0015] Using a lifting tool connected to the lifting hole of the fixed pulley cover, the connecting bolts between the fixed pulley cover and the fixed pulley support are removed. The lifting tool is used to lift the fixed pulley cover upward, causing the connecting component to drive the lifting component to roll along the slide. During the rolling of the lifting component along the slide, the support plate contacts the wire rope and lifts the wire rope upward until the wire rope is completely separated from the fixed pulley groove.

[0016] Use the limiting component to insert into the limiting hole to limit the lifting component and ensure that the lifting component cannot fall back. Move the fixed pulley block out from the left and right sides of the fixed pulley support along the track and replace the pulley block.

[0017] After replacement, pull out the limit component to release the limit on the lifting component. The lifting tool lowers the lifting component back into the chute. At this time, adjust the wire rope so that it accurately enters the fixed pulley groove. Continue to lower the lifting component to roll to the bottom of the chute. At this time, the pulley cover is reset and fixed with bolts. The replaced fixed pulley is then tested.

[0018] The crane fixed pulley convenient replacement device and method of the present invention has the following advantages and beneficial effects:

[0019] This invention can lift all the wire ropes on the fixed pulley by setting up the lifting component, which greatly shortens the time for replacing the fixed pulley and effectively improves the work efficiency. By setting up the limiting component, the wire rope after it is dislodged from the fixed pulley groove can be limited, without the need for additional fixing of the wire rope, which can improve the safety of replacing the fixed pulley group. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and constitute a part of this invention, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a front view of the crane fixed pulley convenient replacement device after installation according to the present invention;

[0022] Figure 2 Left view of the crane fixed pulley convenient replacement device after installation according to the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB section;

[0024] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the middle CC section;

[0025] Figure 5 This is a schematic diagram of the lifting state of the crane fixed pulley convenient replacement method of the present invention;

[0026] Figure 6 for Figure 5 Left view;

[0027] Figure 7 This is a schematic diagram showing the state of the crane after the fixed pulley block has been removed.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100: Pulley cover; 200: Fixed pulley support;

[0030] 1: Replace support 11: Slide plate 111: Slide groove 12: Connecting plate 121: Limiting hole

[0031] 2: Lifting assembly 21: Connecting shaft 211: Connecting hole 22: Roller 23: Support plate

[0032] 3: Connecting component; 4: Limiting component; 5: Track. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] like Figures 1 to 5 As shown, the convenient replacement device for the crane fixed pulley of the present invention includes a replacement support 1, a lifting assembly 2, a connecting assembly 3, and a limiting assembly 4. The replacement support 1 is bolted to the left and right sides of the fixed pulley support 200. The lifting assembly 2 is located on both sides of the replacement support 1 and is used to lift the wire rope. The lifting assembly 2 is fixedly connected to the fixed pulley cover 100 through the connecting assembly 3 for synchronous lifting of the lifting assembly 2. The limiting assembly 4 is detachably mounted on the top of the replacement support 1 and is used to limit the lifting assembly 2.

[0035] The replacement support 1 includes two slide plates 11 and a connecting plate 12. The tops of the two slide plates 11 are symmetrically fixed to the connecting plate 12 by bolts. The bottoms of the slide plates 11 are fixed to the fixed pulley support 200 by bolts. The bottom outer side of the slide plate 11 is provided with a sliding groove 111. The top of the slide plate 11 is provided with a limiting hole 121. The limiting component 4 is detachably installed in the limiting hole 121, so that the slide plates 11 and the connecting plate 12 can be selected according to the diameter of the fixed pulley, which is suitable for replacing fixed pulleys of various specifications.

[0036] The lifting assembly 2 includes a connecting shaft 21, rollers 22, and a support plate 23. The support plate 23 is welded to the middle of the connecting shaft 21 and is used to lift the wire rope. The rollers 22 are symmetrically sleeved at both ends of the connecting shaft 21 and are rolled in the slide groove 111. A connecting hole 211 is provided on the connecting shaft 21 between the rollers 22 and the support plate 23. One end of the connecting assembly 3 is threaded into the connecting hole 211, and the other end of the connecting assembly 3 is hinged to the fixed pulley cover 100. This allows the rollers 22 to roll along the slide groove 111 when the lifting assembly 2 is lifted, and the support plate 23 always maintains its initial state, ensuring that the wire rope is arranged on the support plate 23.

[0037] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, the slide plate 11 is arranged in an arc shape, and the arc of the slide plate 11 smoothly transitions from a small arc to a large arc from the bottom to the top.

[0038] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, the slide groove 111 has an upward-sloping structure.

[0039] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, the pallet 23 is arranged in an arc shape.

[0040] Furthermore, in the above-mentioned convenient replacement device for the fixed pulley of the crane, one end of the connecting component 3 is a threaded rod structure for threaded engagement with the connecting hole 211, and the other end of the connecting component 3 is an ear plate structure for hinged connection with the fixed pulley cover 100.

[0041] Furthermore, in the aforementioned convenient replacement device for the fixed pulley of the crane, rails 5 are provided on the left and right sides of the fixed pulley support for the fixed pulley assembly to move out of the fixed pulley support to the left and right.

[0042] As one specific implementation method, the crane fixed pulley convenient replacement device of the present invention is used as follows:

[0043] When the fixed pulley needs to be replaced, select a slide plate 11 that matches the curvature of the fixed pulley to assemble a replacement support 1, which 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 with bolts, and the lifting component 2 is installed at the bottom of the slide groove 111 of the replacement support 1. The lifting component 2 is connected to the fixed pulley cover 100 through the connecting component 3. At this time, the upper support plate 23 of the lifting component 2 is away from the wire rope and does not affect the normal operation of the crane.

[0044] Using a lifting tool connected to the lifting hole of the fixed pulley cover 100, the connecting bolts between the fixed pulley cover 100 and the fixed pulley support 200 are removed. The lifting tool is used to lift the fixed pulley cover 100 upward, causing the connecting component 3 to drive the lifting component 2 to roll along the slide groove 111. During the rolling of the lifting component 2 along the slide groove 111, the support plate 23 comes into contact with the wire rope. At this time, the wire rope installed in the fixed pulley rope groove is arranged on the support plate 23, and the wire rope is lifted and lifted up until the wire rope is completely separated from the fixed pulley rope groove.

[0045] The lifting component 2 is limited by inserting the limiting component 4 into the limiting hole 121 to ensure that the lifting component 2 cannot fall back. The fixed pulley is removed from the left and right sides of the fixed pulley support 200 and replaced. During removal, the fixed pulley group is moved out from the left and right sides of the fixed pulley support along the track 5 to make room for the replacement of the fixed pulley and the replacement of the pulley group.

[0046] After the replacement is completed, pull out the limiting component 4 to release the limit on the lifting component 2. The lifting tool lowers the lifting component 2 back into the slide groove 111. At this time, adjust the wire rope so that the wire rope accurately enters the fixed pulley groove. Continue to lower the lifting component 2 to roll to the bottom of the slide groove 111. At this time, the pulley cover 100 is reset and fixed by bolts. The replaced fixed pulley is then tested.

[0047] Another aspect of the present invention provides a convenient method for replacing a fixed pulley of a crane, comprising:

[0048] When the fixed pulley needs to be replaced, select a skateboard 11 that matches the curvature of the fixed pulley to assemble a replacement support 1. Fix the bottom of the replacement support 1 to the left and right sides of the fixed pulley support 200 with bolts, and install the lifting component 2 at the bottom of the slide groove 111 of the replacement support 1. Connect the lifting component 2 to the fixed pulley cover 100 through the connecting component 3.

[0049] Using a lifting tool connected to the lifting hole of the fixed pulley cover 100, the connecting bolts between the fixed pulley cover 100 and the fixed pulley support 200 are removed. The lifting tool is used to lift the fixed pulley cover 100 upward, causing the connecting component 3 to drive the lifting component 2 to roll along the slide groove 111. During the rolling of the lifting component 2 along the slide groove 111, the support plate 23 contacts the wire rope and lifts the wire rope upward until the wire rope is completely separated from the fixed pulley rope groove.

[0050] The lifting component 2 is limited by inserting the limiting component 4 into the limiting hole 121 to ensure that the lifting component 2 cannot fall back. The fixed pulley is removed from the left and right sides of the fixed pulley support 200 and replaced. During removal, the fixed pulley group is moved out from the left and right sides of the fixed pulley support along the track 5 to make room for the replacement of the fixed pulley and the replacement of the pulley group.

[0051] After the replacement is completed, pull out the limiting component 4 to release the limit on the lifting component 2. The lifting tool lowers the lifting component 2 back into the slide groove 111. At this time, adjust the wire rope so that the wire rope accurately enters the fixed pulley groove. Continue to lower the lifting component 2 to roll to the bottom of the slide groove 111. At this time, the pulley cover 100 is reset and fixed by bolts. The replaced fixed pulley is then tested.

[0052] In summary, compared with the prior art, the crane fixed pulley convenient replacement device and method of the present invention has the following advantages and beneficial effects: The present invention can lift all the wire ropes on the fixed pulley by setting the lifting component, which greatly shortens the time for replacing the fixed pulley and effectively improves the work efficiency. The setting of the limiting component can limit the wire rope after it is dislodged from the fixed pulley rope groove, without the need for additional fixing of the wire rope, which can improve the safety of replacing the fixed pulley group.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, the terms "front," "back," "left," "right," "upper," and "lower" in this document refer to the placement shown in the accompanying drawings.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A convenient replacement device for a crane fixed pulley, 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 bolted to the left and right sides of the fixed pulley support. The lifting assembly is located on both sides of the replacement support and is used to pull the wire rope for lifting. The lifting assembly is fixedly connected to the fixed pulley cover through the connecting assembly for synchronous lifting of the lifting assembly. The limiting assembly is detachably mounted on the top of the replacement support for limiting the lifting assembly. Wherein: The replacement support includes two slide plates and a connecting plate. The tops of the two slide plates are symmetrically fixed to the connecting plate by bolts. The bottoms of the slide plates are fixed to the fixed pulley support by bolts. A sliding groove is provided on the outer side of the bottom of the slide plate. A limit hole is provided on the top of the slide plate. The limit component is detachably installed in the limit hole. The lifting assembly includes a connecting shaft, rollers, and a support plate. The support plate is welded to the middle of the connecting shaft and is used to lift the wire rope. The rollers are symmetrically sleeved at both ends of the connecting shaft and are rolled in the groove. A connecting hole is provided on the connecting shaft between the rollers and the support plate. One end of the connecting assembly is threaded into the connecting hole, and the other end of the connecting assembly is hinged to the fixed pulley cover.

2. The convenient replacement device for a crane fixed pulley according to claim 1, characterized in that, The skateboard is designed in an arc shape, and the arc of the skateboard smoothly transitions from a small arc to a large arc from the bottom to the top.

3. The convenient replacement device for a crane fixed pulley according to claim 1, characterized in that, The slide is an upward-sloping structure.

4. A convenient replacement device for a crane fixed pulley according to claim 1, characterized in that, The tray is designed in an arc shape.

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

6. A convenient replacement device for a crane fixed pulley according to claim 1, characterized in that, The fixed pulley support has rails on both the left and right sides for the fixed pulley block to move out of the fixed pulley support to the left and right.

7. A method for conveniently replacing a crane fixed pulley using the convenient replacement device for crane fixed pulleys according to any one of claims 1 to 6, characterized in that, The method for conveniently replacing the fixed pulley of the crane includes: When the fixed pulley needs to be replaced, select a skateboard that matches the curvature of the fixed pulley to assemble a replacement support. Fix the bottom of the replacement support to the left and right sides of the fixed pulley support with bolts, and install the lifting component at the bottom of the replacement support groove. Connect the lifting component to the fixed pulley cover through the connecting component. Using a lifting tool connected to the lifting hole of the fixed pulley cover, the connecting bolts between the fixed pulley cover and the fixed pulley support are removed. The lifting tool is used to lift the fixed pulley cover upward, causing the connecting component to drive the lifting component to roll along the slide. During the rolling of the lifting component along the slide, the support plate contacts the wire rope and lifts the wire rope upward until the wire rope is completely separated from the fixed pulley groove. Use the limiting component to insert into the limiting hole to limit the lifting component and ensure that the lifting component cannot fall back. Move the fixed pulley block out from the left and right sides of the fixed pulley support along the track and replace the pulley block. After replacement, pull out the limit component to release the limit on the lifting component. The lifting tool lowers the lifting component back into the chute. At this time, adjust the wire rope so that it accurately enters the fixed pulley groove. Continue to lower the lifting component to roll to the bottom of the chute. At this time, the pulley cover is reset and fixed with bolts. The replaced fixed pulley is then tested.

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