Winding type steel wire rope tightening and fixing device for crane and construction method

Abstract

The invention relates to the technical field of hoisting equipment, and discloses a winding type steel wire rope rapid tightening and fixing device and method. The device comprises a cylinder body welded with a ratchet wheel, a main shaft penetrating through the cylinder body, symmetrical side plates, a ratchet wheel non-return pin, a comb-shaped rope guide device and an eccentric tail rope pressing plate. The working method comprises the steps that the stressed end of the steel wire rope penetrates into the rope guide and penetrates out of the pressing plate; when the lifting hook descends to a low position, the tail end is manually pulled to enable the barrel to rotate clockwise to take up the rope; when the lifting hook lifts, the ratchet wheel non-return pin locks the cylinder body, and meanwhile, the eccentric pressing plate automatically presses the tail rope. Through the cooperation mechanism of ratchet wheel-barrel linkage locking, winding friction force between the steel wire rope and the barrel and automatic clamping of the tail end of the steel wire rope through the eccentric pressing plate, the technical contradictions that in repeated traction operation, the steel wire rope tightening efficiency is low, and the fixing reliability is poor are solved, and efficient and safe circulating traction operation is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting equipment auxiliary devices, and in particular to a steel wire rope quick tightening fixing device based on crane power and a construction method. BACKGROUND

[0002] For the working condition without a large winch, long-distance segmented traction is realized by using a crane (such as long-belt laying of a petrochemical pipe belt machine), which has significant advantages, such as flexible arrangement of traction points and large traction force exerted by a small crane. However, due to the limited lifting stroke of the hook, it is usually necessary to repeatedly perform the operation cycle of "lifting traction for a distance → lowering the hook → re-tightening the slack steel wire rope → lifting traction again". This operation mode has significant problems. For example, after the hook is lowered each time, the slack steel wire rope needs to be manually re-tightened and fixed, which consumes a large amount of time and labor. The manual fixing method (such as using a rope clamp or temporary binding) is prone to looseness or failure when bearing a large traction force, which poses a safety hazard. During the repeated tightening, fixing, and traction of the steel wire rope, if the path constraint is poor or the fixing method is improper, the steel wire rope is prone to be tangled, squeezed, and knotted, which aggravates friction and shortens the service life. The entire cycle process relies on manual intervention, and it is difficult to achieve efficient and continuous operation.

[0003] For example, the patent document with the publication number CN202411823505A and the name "Installation method of luffing winding system of scissor-type crane" provides an installation method of a luffing winding system of a scissor-type crane, which realizes safe pre-tightening force of the steel wire rope by using two main hook drums to be oppositely pulled, and avoids pre-tightening force of the multiple-ratio pulley block from being wound around the lifting movable pulley during the rope threading process.

[0004] The above-mentioned core technical problems of quick and reliable tightening and automatic fixing of the steel wire rope in long-distance and repeated segmented traction operation have not been effectively solved by the above-mentioned scheme and other existing technologies. Therefore, there is an urgent need for a special device and method that can be integrated into the hook, realize quick manual tightening of the steel wire rope, automatically and reliably lock and fix the steel wire rope during lifting of the hook, and protect the steel wire rope. SUMMARY

[0005] The present application aims to solve the problems of high labor intensity, low efficiency, poor reliability, and easy wear of the steel wire rope in the manual segmented tightening and fixing of the steel wire rope during repeated traction operation in the prior art, and proposes a winding type steel wire rope quick tightening fixing device and method.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: The application discloses a winding type steel wire rope quick tightening fixing device for a crane, which comprises a cylinder (1) for winding a steel wire rope (11); ratchets (2) welded and fixed at two ends of the cylinder (1) and forming integral rotating units with the cylinder (1); a main shaft (4) penetrating through the centers of the cylinder (1) and the ratchets (2), wherein the cylinder (1) and the ratchets (2) can rotate around the main shaft (4); symmetrically arranged side plates (3) located at two sides of the cylinder (1) and connected through side plate fixing shafts (9), wherein lifting lugs (8) are fixed on the side plates (3); a ratchet check pin (5) installed on one side plate (3) and used for locking the ratchets (2) when the cylinder (1) and the ratchets (2) attempt to rotate counterclockwise; a comb type rope guide (6) symmetrically arranged on the cylinder (1) in an upper and lower mode and used for guiding and restricting the winding path of the steel wire rope (11); and a tail rope pressing plate (7) arranged at a rope outlet side of the cylinder (1), wherein the tail rope pressing plate (7) is designed in an eccentric structure; and the main shaft (4) is fixed and limited through a main shaft fixing pin (10). The application discloses a construction method of a winding type steel wire rope tightening fixing device for a crane. S1. The force receiving end (11) of the steel wire rope is sequentially threaded through the comb type rope guide (6) and threaded out from below the tail rope pressing plate (7); S2. A lifting hook is connected to the lifting lug (8), and the lifting hook is lowered to an initial position suitable for operation; S3. The tail end (12) of the steel wire rope is manually pulled, so that the cylinder (1) and the ratchets (2) integrally rotate clockwise around the main shaft (4), the slack section of the steel wire rope is tightened, the ratchet check pin (5) is in a non-locking state, and the tail rope pressing plate (7) does not press the steel wire rope; S4. The lifting hook is lifted to perform traction operation, the ratchet check pin (5) automatically falls into position to lock the ratchets (2) and the cylinder (1), meanwhile, the tail rope pressing plate (7) of the eccentric structure automatically presses the tail end (12) of the steel wire rope, and traction force is transmitted to the force receiving end (11) of the steel wire rope through the cylinder (1); S5. When the lifting hook is lifted to a predetermined height, the lifting hook is lowered back to the initial position suitable for operation; S6. Steps S3 to S5 are repeated, so that the steel wire rope is circularly tightened, fixed and tractioned.

[0007] The application has the following beneficial effects: 1. The winding type steel wire rope quick tightening fixing device and construction method, through setting up the ratchet wheel (2) fixedly connected with the cylinder (1) and rotating synchronously, the pivotally installed ratchet wheel check pin (5) and the eccentric structure tail rope pressing plate (7), when the hook lifting is carried out to pull, the ratchet wheel check pin (5) is automatically positioned and locks the ratchet wheel (2) and the cylinder (1), and the eccentric tail rope pressing plate (7) is automatically pressed to the steel wire rope tail end (12), forming a double locking mechanism, eliminating the safety hidden danger of unreliable artificial fixing, and significantly improving the safety and reliability of the traction operation.

[0008] 2. The winding type steel wire rope quick tightening fixing device and construction method, through manually directly pulling the steel wire rope tail end (12) to drive the cylinder (1) and the ratchet wheel (2) to rotate clockwise as a whole to tighten the steel wire rope (the ratchet wheel check pin (5) does not interfere in the tightening process), and combining the automatic triggering locking and releasing mechanism of the hook lifting, the automatic circulation operation process of "manual quick tightening → automatic locking and fixing of the hook lifting → safe traction → keeping fixed of the hook descending → manual tightening again" is realized, the manual operation link is greatly reduced, and the overall efficiency of long distance segmented traction operation is significantly improved.

[0009] 3. The winding type steel wire rope quick tightening fixing device and construction method, through the comb type rope guide (6) symmetrically arranged on the length direction of the cylinder (1), the steel wire rope (11) is forced to be closely wound on the cylinder (1) according to the preset, neat and orderly path, the axial displacement of the steel wire rope is effectively limited, the wear caused by the disorder rope, extrusion and stacking is prevented, and the service life of the steel wire rope is significantly prolonged. Meanwhile, the automatic pressing action of the eccentric tail rope pressing plate (7) is stable, and local damage to the steel wire rope is avoided.

[0010] 4. The winding type steel wire rope quick tightening fixing device and construction method, through compactly integrating the core components such as the cylinder (1), the ratchet wheel (2), the side plate (3), the rope guide (6) and the pressing plate (7), the overall unit capable of ascending and descending with the hook is formed, the structure is simple and reliable, no additional power or complex control system is needed, and the installation and use on the construction site are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the front view of the application; Figure 2 It is the side view of the application; Figure 3 It is the top view of the application; Figure 4 It is the axonometric view of the application Figure 1 ; Figure 5 It is the axonometric view of the application Figure 2 ; Figure 6 Fig. 2 is a schematic diagram of the crane pulling belt structure in the embodiment 2 of the present application Figure 7 Fig. 3 is a schematic diagram of the hook connection fixing device structure in the embodiment 2 of the present application Figure 8 Fig. 4 is a schematic diagram of the steel wire rope pulling belt structure in the embodiment 2 of the present application Figure 9 Fig. 5 is a schematic diagram of the belt pulling guide pulley arrangement in the embodiment 2 of the present application In the figure: 1. cylinder, 2. ratchet, 3. side plate, 4. main shaft, 5. ratchet check pin, 6. comb type rope guide, 7. tail rope pressure plate, 8. lifting lug, 9. side plate fixing shaft, 10. main shaft fixing pin, 11. steel wire rope stress end, 12. steel wire rope tail end, 13. winding type steel wire rope quick tightening fixing device, 14. crane, 15. pulling steel wire rope, 16. guide pulley, 17. pipe belt machine rack, 18. pulled belt, 19. hook, 20. connection rigging DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0013] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0014] Embodiment 1, refer to Figures 1-5A kind of winding steel wire rope quick tightening fixing device, including the cylinder 1 inside for winding steel wire rope, steel wire rope adopts 35*K7-23 anti-rotation steel wire rope for crane, allowable tension 12t;Ratchet wheel 2 is made of Q245 steel plate with thickness of 20mm, tooth top circle diameter 500mm, number of teeth 12, tooth height 30mm, tooth width 20mm, tooth face length 119mm, center hole diameter 108mm, is fixed at the both ends of the cylinder 1 by welding, the center hole of ratchet wheel is inserted into the seamless steel pipe with diameter of 108*8mm and length of 340mm as bushing, and is fixed at the both ends of ratchet wheel by welding, and forms integral rotating unit with cylinder 1;Main shaft 4 penetrates the center of the cylinder 1 and ratchet wheel 2, and the cylinder 1 and ratchet wheel 2 can rotate around the main shaft 4 made of seamless steel pipe with diameter of 89*12mm and length of 450mm;Symmetrically arranged side plate 3 made of Q245 steel plate with thickness of 20mm is located at the both sides of cylinder 1 and is connected by side plate fixing shaft 9 made of 8.8 grade M36*450 double-end bolt, and lifting lug 8 is fixed on the side plate 3;Ratchet wheel check pin 5 is made of 45# quenched and tempered round steel with diameter of 25mm, is installed on one side plate 3, and is used to lock ratchet wheel 2 when cylinder 1 and ratchet wheel 2 attempt to rotate counterclockwise;Comb-type rope guide 6 is made of Q235 steel plate with thickness of 8mm, and one set of comb-type rope guide 6 is symmetrically arranged above and below the cylinder 1, and is used to guide and constrain the winding path of steel wire rope 11;Tail rope pressing plate 7 made of Q235 steel plate with thickness of 8mm is arranged at the rope outlet side of cylinder 1, and the tail rope pressing plate 7 is designed with eccentric structure;Wherein, the main shaft 4 is fixed and limited by main shaft fixing pin 10.

[0015] When the hook is pulled by lifting lug 8, ratchet wheel check pin 5 automatically falls into position to lock ratchet wheel 2 and cylinder 1, and tail rope pressing plate 7 with eccentric structure automatically presses the tail end 12 of steel wire rope in response to the locking state of cylinder 1, and the traction force is transmitted to the force end 11 of steel wire rope through cylinder 1 Embodiment 2, a construction method of a winding steel wire rope quick tightening fixing device, comprising the following steps: Refer to Figures 6-9 Taking full-length 1100m tubular belt conveyor laying as an example, three rolls of belts (single roll length 380m) are arranged in upper and lower two layers, and the crane completes traction at three station points with a station distance of 380±0.5m.

[0016] S1. First station initialization The first station point of crane 14 is selected at 380±0.5m from the entry point, and a guide pulley 16 is arranged at the center hole position of the tubular belt under the tubular belt frame (positioning error ≤±10mm); S2. Rope-belt connection and device hanging The 23mm steel wire rope is inserted into the pipe belt hole of the pipe belt machine and fixedly connected with the belt head, and the lifting hook of the crane is hung on the lifting lug 8 of the quick tightening fixing device 13 of the winding steel wire rope; S3. Steel wire rope traction The force end 11 of the 23mm steel wire rope is sequentially inserted through the comb-type guide rope device 6 and passed out from below the tail rope pressing plate 7; S4. Lifting hook positioning The lifting hook of the crane is lifted to pull the belt into the pipe belt machine through the steel wire rope, and the lifting hook is lowered to an initial position suitable for operation, and it is confirmed that the steel wire rope is in a relaxed state; S5. Manual tightening The operator pulls the tail end 12 of the steel wire rope to rotate the cylinder 1 and the ratchet 2 as a whole clockwise around the main shaft 4 to tighten the slack section of the steel wire rope, at this time the ratchet reversing pin 5 is in a non-locking state, and the tail rope pressing plate 7 keeps a gap and does not press the steel wire rope tightly; S6. Traction operation The lifting hook of the crane is lifted to pull the belt into the pipe belt machine through the steel wire rope, and the lifting hook is lowered to an initial position suitable for operation, and it is confirmed that the steel wire rope is in a relaxed state; S7. Traction reset When the lifting hook is lifted to a predetermined height, it is lowered back to the initial position suitable for operation, the reversing pin 5 is reset by disengaging the ratchet tooth groove, and the pressing plate 7 automatically restores the gap and does not press the steel wire rope tightly; S8. Cycle operation Repeat S5-S7 until the belt reaches the guide pulley 16; S9. Station transfer and level switching After the lower belt completes traction, the lower pipe belt guide pulley is removed, the guide pulley is reset in the center hole of the upper pipe belt, and S2-S8 is repeated to complete the traction of the upper belt; the crane is moved to the second station point (this embodiment uses a distance of 350m for segmentation), and S1-S8 is repeated to pull the second roll; the crane is moved to the third station point (this embodiment uses a distance of 350m for segmentation), and S1-S8 is repeated to complete the remaining traction; in this example, the crane is positioned three times according to the actual site (380m, 730m, and 1080m from the starting point), and a total of 1100m of belt traction and laying is completed.

[0017] Finally, it should be noted that the above description is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent substitutions or changes within the technical scope disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A winding type wire rope fast tightening and fixing device for a crane, characterized in that: The cylinder (1) has a portion for winding a steel wire rope; the ratchet (2) is welded and fixed to both ends of the cylinder (1), forming an integral rotating unit with the cylinder (1); the main shaft (4) passes through the center of the cylinder (1) and the ratchet (2), and the cylinder (1) and the ratchet (2) can rotate around the main shaft (4); symmetrically arranged side plates (3) are located on both sides of the cylinder (1) and are connected through a side plate fixing shaft (9), and a lifting lug (8) is fixed on the side plate (3); a ratchet backstop pin (5) is installed on one side plate (3) and is used to lock the ratchet (2) when the cylinder (1) and the ratchet (2) try to rotate counterclockwise; a comb-type rope guide (6) is symmetrically arranged in groups on the upper and lower sides of the cylinder (1) to guide and constrain the winding path of the wire rope (11); a tail rope pressure plate (7) is arranged on the rope outlet side of the cylinder (1), and the tail rope pressure plate (7) adopts an eccentric structure design; wherein the main shaft (4) is fixed and limited by the main shaft fixing pin (10).

2. The winding type wire rope quick tightening and fixing device for a crane according to claim 1, characterized in that: When the steel wire rope tail end (12) is manually pulled to cause the cylinder (1) and the ratchet (2) to rotate clockwise around the main shaft (4) as a whole to tighten the steel wire rope when no force is applied, the ratchet stop pin (5) does not interfere with the rotation, and the tail rope pressure plate (7) is in a state where the steel wire rope tail end (12) is not compressed.

3. The winding type wire rope quick tightening and fixing device for a crane according to claim 1, characterized in that: When the hook is pulled by the lifting device of the lifting lug (8), the ratchet check pin (5) automatically falls into place to lock the ratchet (2) and the cylinder (1), and at the same time, the tail rope pressure plate (7) of the eccentric structure automatically presses the tail end (12) of the wire rope in response to the locked state of the cylinder (1), and the pulling force is transmitted to the force-bearing end (11) of the wire rope through the cylinder (1).

4. The construction method of a winding type wire rope fast tightening and fixing device for a crane according to claim 1 is characterized in that The following steps are involved: S1. The stressed end of the wire rope (11) is passed through the comb-shaped rope guide (6) and out from under the tail rope pressure plate (7); S2. Connecting the hook to the lifting lug (8) and lowering the hook to an initial position suitable for operation; S3. Manually pull the tail end of the wire rope (12), so that the cylinder (1) and the ratchet (2) rotate clockwise around the main shaft (4) as a whole, tightening the slack section of the wire rope. At this time, the ratchet stop pin (5) is in the unlocked state, and the tail rope pressure plate (7) does not press the wire rope; S4. The hook is lifted to perform traction operation. At this time, the ratchet stop pin (5) automatically falls into place to lock the ratchet (2) and the cylinder (1). At the same time, the tail rope pressure plate (7) of the eccentric structure automatically presses the tail end (12) of the wire rope. The traction force is transmitted to the force-bearing end (11) of the wire rope through the wire rope wound on the cylinder (1); S5. When the hook reaches the predetermined height, lower it back to its initial position suitable for operation; S6. Repeat steps S3 to S5 to complete the cyclic tightening, fixing and pulling process of the wire rope.

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