A cable retracting device for a sling

Abstract

The cable retracting device for a hoist disclosed in the present application includes: a first anti-rotation device, a second anti-rotation device and a third anti-rotation device. The first anti-rotation device includes: a clamping fixed disk; a clamping inner sleeve arranged in the clamping fixed disk; a first support mechanism arranged on the circumferential side wall of the clamping fixed disk; a first retaining ring arranged at the end of the first support mechanism; the second anti-rotation device includes: a slewing disk mechanism; a caliper arranged in the slewing disk mechanism; a second support mechanism arranged on the circumferential side wall of the slewing disk mechanism; a second retaining ring arranged at the end of the second support mechanism; the third anti-rotation device includes: a bottom fixed disk; a third support mechanism arranged on the circumferential side wall of the bottom fixed disk; a third retaining ring arranged at the end of the third support mechanism. The cable retracting device for a hoist disclosed in the present application can ensure that the cable is normally stored in the cable storage basket during the lifting process, avoid cable damage and major property losses, and improve the operating efficiency of the gantry crane.

Description

Technical Field

[0001] The present application relates to the technical field of gantry crane spreader auxiliary equipment, and more specifically, to a spreader cable retracting and releasing device. Background Art

[0002] A gantry crane, also known as a portal crane, is a type of crane used for loading and unloading ships on rails at the edge of docks. Gantry cranes typically utilize a spreader to grab cargo and coordinate the retraction and extension of lifting wire ropes to complete loading and unloading operations. They are widely used at docks and port edges.

[0003] Currently, multi-purpose gantry cranes operating at the port's frontier often switch between grab buckets and container spreaders. Due to the high lifting heights below and above the rails at the frontier dock, the gantry crane hoist often requires a retraction and extension distance of up to 50 meters. During the spreader's rotation and translational lifting operations, the long spreader cable can easily swing from side to side due to its own inertia, becoming entangled with the wire rope. Furthermore, the lifting wire rope is often over-greased, which can cause the spreader cable to become stuck and unable to separate. If not discovered and addressed promptly, the spreader cable cannot be properly stored in the cable storage basket, resulting in damage to the spreader cable.

[0004] Therefore, how to provide a hoist cable retracting device that can help the hoist cable to be normally stored in the cable storage basket during the lifting process, avoid cable damage and property loss, and improve the operating efficiency of the gantry crane has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a hoist cable retracting device, which can ensure that the hoist cable is normally collected into the cable storage basket during the lifting process, avoid cable damage and major property losses, and improve the operating efficiency of the gantry crane.

[0006] The technical solutions provided in this application are as follows:

[0007] The present application provides a hoist cable retracting and releasing device, comprising: a first anti-rotation device arranged at the top of the hoist cable; the first anti-rotation device comprises: a clamping fixed disk sleeved on the cable; a clamping inner sleeve arranged in the clamping fixed disk and clamped and connected to the cable; a first supporting mechanism arranged on the circumferential side wall of the clamping fixed disk; a first retaining ring arranged at the end of the first supporting mechanism and connected to the lifting wire rope; a second anti-rotation device arranged in the middle of the hoist cable; the second anti-rotation device comprises: a rotary disk mechanism sleeved on the cable; a clamp arranged in the rotary disk mechanism for clamping or loosening the cable; a second supporting mechanism arranged on the circumferential side wall of the rotary disk mechanism; a second retaining ring arranged at the end of the second supporting mechanism and connected to the lifting wire rope; a third anti-rotation device arranged at the outlet of the cable storage basket; the third anti-rotation device comprises: a bottom fixed disk sleeved on the cable; a third supporting mechanism arranged on the circumferential side wall of the bottom fixed disk; a third retaining ring arranged at the end of the third supporting mechanism and connected to the lifting wire rope.

[0008] Furthermore, in a preferred embodiment of the present invention, the clamping plate includes:

[0009] Fixed disk body;

[0010] A connection interface provided on the circumferential side wall of the fixed disk body;

[0011] a tapered inner hole provided in the center of the fixed disk body;

[0012] A threaded fixing hole is provided on the upper surface of the fixing plate body.

[0013] Furthermore, in a preferred embodiment of the present invention, the clamping inner sleeve includes:

[0014] a cylindrical inner sleeve disposed in the tapered inner hole;

[0015] A slotted hole is provided on the cylindrical surface of the cylindrical inner sleeve;

[0016] A shaft step structure provided on the cylindrical inner sleeve;

[0017] A fastener is provided on the shaft step structure and connected to the threaded fixing hole.

[0018] Furthermore, in a preferred embodiment of the present invention, the first supporting mechanism, the second supporting mechanism and the third supporting mechanism have the same structure;

[0019] The first retaining ring, the second retaining ring and the third retaining ring have the same structure.

[0020] Furthermore, in a preferred embodiment of the present invention, the first supporting mechanism, the second supporting mechanism, or the third supporting mechanism includes:

[0021] A first joint; a first flange is provided at the end of the first joint; a telescopic damper connected to the first flange; and a compression spring sleeved on the telescopic damper.

[0022] Furthermore, in a preferred embodiment of the present invention, the retractable damper comprises:

[0023] A damper sleeve; a second flange disposed at the front end of the damper sleeve, the second flange connected to the first flange; a third flange disposed at the rear end of the damper sleeve; a damping telescopic rod having one end disposed within the damper sleeve and the other end connected to the first retaining ring, the second retaining ring, or the third retaining ring; a fourth flange disposed at the end of the damping telescopic rod; and a second joint connected to the fourth flange.

[0024] The compression spring is sleeved on the damping telescopic rod, with one end connected to the third flange and the other end connected to the fourth flange.

[0025] Furthermore, in a preferred embodiment of the present invention, the first retaining ring, the second retaining ring, or the third retaining ring includes:

[0026] a universal ball joint connected to the second joint;

[0027] A hollow ring connected to the universal ball joint;

[0028] The lifting wire rope passes through the hollow ring;

[0029] A connecting rod is arranged between the universal ball head and the hollow ring.

[0030] Furthermore, in a preferred embodiment of the present invention, the turntable mechanism includes:

[0031] A gear rotary disc sleeved on the cable;

[0032] A centering chuck disposed in the gear rotary disk and movably connected to the gear rotary disk;

[0033] The centering chuck is slidably engaged with the caliper;

[0034] A mounting through hole is provided at the center of the centering chuck, and the lifting wire rope passes through the mounting through hole;

[0035] a thrust ball bearing disposed in the mounting through hole;

[0036] a driving gear meshing with the gear rotating disk;

[0037] A power element provided on the centering chuck and connected to the driving gear;

[0038] The power element is used to drive the driving gear and the gear rotating disk to perform a rotary motion, thereby driving the centering chuck to rotate on a fixed axis, and causing the caliper to rotate to clamp or loosen the lifting wire rope.

[0039] Furthermore, in a preferred embodiment of the present invention, the centering chuck is provided with a notch track; the caliper is provided with a protrusion;

[0040] The protrusion is clamped in the notch track;

[0041] The protrusion can slide along the slot track and drive the caliper to rotate under the force.

[0042] Furthermore, in a preferred embodiment of the present invention, the spreader cable retracting and releasing device further comprises: a controller connected to the power element signal.

[0043] The present invention provides a hoist cable retracting and releasing device, comprising: a first anti-rotation device arranged at the top of the hoist cable; the first anti-rotation device comprises: a clamping fixed disk sleeved on the cable; a clamping inner sleeve arranged in the clamping fixed disk and tightly connected to the cable; a first supporting mechanism arranged on the circumferential side wall of the clamping fixed disk; a first retaining ring arranged at the end of the first supporting mechanism and connected to the lifting wire rope; a second anti-rotation device arranged in the middle of the hoist cable; the second anti-rotation device comprises: a turntable mechanism sleeved on the cable; a clamp arranged in the turntable mechanism for clamping or loosening the cable; a second supporting mechanism arranged on the circumferential side wall of the turntable mechanism; a second retaining ring arranged at the end of the second supporting mechanism and connected to the lifting wire rope; a third anti-rotation device arranged at the outlet of the cable storage basket; the third anti-rotation device comprises: a bottom fixing disk sleeved on the cable; a third supporting mechanism arranged on the circumferential side wall of the bottom fixing disk; a third retaining ring arranged at the end of the third supporting mechanism and connected to the lifting wire rope.For the said hoist cable retracting and releasing device, its main structure consists of the first anti-rotation device, the second anti-rotation device and the third anti-rotation device, which are arranged in sequence at the top of the hoist cable, the middle of the cable and the outlet of the bottom cable storage basket, and are all connected to the lifting wire rope and stretch out the lifting wire rope to prevent it from rotating and entangled during the lifting operation; wherein, the first anti-rotation device includes the said clamping fixing disk, the clamping inner sleeve, the first supporting mechanism and the first retaining ring, and the said clamping inner sleeve is arranged in the clamping fixing disk, for fixing the clamping fixing disk at the preset position of the hoist cable, and the top hoist cable position The lifting wire rope is passed through the first retaining ring, and the wire ropes are supported from each other by the first supporting mechanism, so that the wire ropes are separated from each other during the lifting process of the spreader; secondly, a second anti-rotation device is provided, which includes a turntable mechanism, a caliper, a second supporting mechanism and a second retaining ring. The turntable mechanism is sleeved on the middle part of the spreader cable, and the cable in the middle position is stored in the cable storage basket when the spreader is in operation. The caliper is provided for clamping or loosening the spreader cable. When the spreader descends, the spreader cable leaves the cable storage basket. When the spreader reaches a predetermined descending height, the caliper moves synchronously, and the caliper clamps the spreader cable The second anti-rotation device rises with the spreader cable. When the spreader is lifted, the spreader cable falls into the cable storage basket. When the predetermined lifting height is reached, the clamp rotates to loosen the spreader cable to prevent the second anti-rotation device from rotating into the cable storage basket. As for the steel wire rope in the middle of the spreader cable, the supporting principle is the same as above. The second supporting mechanism and the second retaining ring are provided to support and unfold the steel wire ropes in the middle of the spreader cable. The third anti-rotation device is provided at the bottom of the spreader cable, that is, at the outlet of the cable storage basket. The spreader cable at this position is stored in the cable storage basket when the spreader is in operation, and the spreader cable here passes freely through the bottom The fixed plate is fixed at the bottom, and for the steel wire rope at the bottom spreader cable position, the support principle is the same as above, the steel wire rope passes freely through the third retaining ring, and the third support mechanism is used to support and unfold the steel wire ropes. In summary, the present retractable device is provided with the first anti-rotation device, the second anti-rotation device and the third anti-rotation device, which are combined with each other to respectively support and unfold the steel wire ropes at the top, middle and bottom positions of the spreader cable when the spreader is in operation, so that the steel wire ropes form an overall mutual isolation mechanism at the top, middle and bottom, effectively avoiding the steel wire rope and the spreader cable from rotating and entangled, so that the spreader cable can be retracted and unfolded freely. Therefore, compared with the prior art, the technical solution provided by the present invention can ensure that the spreader cable is normally stored in the cable storage basket during the lifting process, avoid cable damage and major property losses, and improve the operating efficiency of the gantry crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] Figure 1 A schematic structural diagram of the spreader cable retracting and releasing device provided in an embodiment of the present invention;

[0046] Figure 2 A schematic structural diagram of the first anti-spin device provided in an embodiment of the present invention;

[0047] Figure 3 A schematic structural diagram of the second anti-spin device provided in an embodiment of the present invention;

[0048] Figure 4 A schematic structural diagram of the third anti-spin device provided in an embodiment of the present invention;

[0049] Figure 5 A schematic structural diagram of the clamping and fixing plate provided in an embodiment of the present invention;

[0050] Figure 6 A schematic structural diagram of the clamping inner sleeve provided in an embodiment of the present invention;

[0051] Figure 7 A schematic structural diagram of the first supporting mechanism, the second supporting mechanism, or the third supporting mechanism provided in an embodiment of the present invention;

[0052] Figure 8 A schematic structural diagram of the retractable damper provided in an embodiment of the present invention;

[0053] Figure 9 A schematic structural diagram of the first retaining ring, the second retaining ring, or the third retaining ring provided in an embodiment of the present invention;

[0054] Figure 10 A schematic structural diagram of the turntable mechanism provided in an embodiment of the present invention;

[0055] Figure 11 A schematic diagram of the connection structure between the driving gear and the gear rotating disk provided in an embodiment of the present invention;

[0056] Figure 12 A schematic diagram of the connection structure of the caliper provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0058] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0059] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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 specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0061] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0062] like Figures 1 to 12 As shown, the sling cable retracting and releasing device provided in an embodiment of the present application includes: a first anti-rotation device 3 arranged at the top of the sling cable 1; a second anti-rotation device 4 arranged in the middle of the sling cable 1; a third anti-rotation device 5 arranged at the outlet of the cable storage basket; and a controller connected to the signal of the second anti-rotation device 4.

[0063] The present invention provides a cable retracting and releasing device for a sling, specifically comprising: a first anti-rotation device 3 arranged at the top of the sling cable 1; the first anti-rotation device 3 comprises: a clamping fixing disk 6 sleeved on the cable; a clamping inner sleeve 7 arranged in the clamping fixing disk 6 and clamped and connected to the cable; a first supporting mechanism 8 arranged on the circumferential side wall of the clamping fixing disk 6; a first retaining ring 9 arranged at the end of the first supporting mechanism 8 and connected to the lifting wire rope 2; a second anti-rotation device 4 arranged in the middle of the sling cable 1, and a controller connected to the signal of the second anti-rotation device 4; the second anti-rotation device 4 ... A rotary disc mechanism 10 on the cable; a clamp 11 disposed within the rotary disc mechanism 10 for clamping or loosening the cable; a second support mechanism 12 disposed on the circumferential side wall of the rotary disc mechanism 10; a second retaining ring 13 disposed at the end of the second support mechanism 12 and connected to the lifting wire rope 2; a third anti-rotation device 5 disposed at the outlet of the cable storage basket; the third anti-rotation device 5 comprises: a bottom fixing disc 14 sleeved on the cable; a third support mechanism 15 disposed on the circumferential side wall of the bottom fixing disc 14; and a third retaining ring 16 disposed at the end of the third support mechanism 15 and connected to the lifting wire rope 2. Compared to the prior art, the technical solution provided by the present invention can ensure that the cable is normally stored in the cable storage basket during the lifting process, avoid cable damage and significant property losses, and improve the operating efficiency of the gantry crane.

[0064] The technical solution of the present invention is described in detail below with reference to specific embodiments:

[0065] Specifically, in a specific embodiment of the present invention, the clamping fixing plate 6 includes: a fixing plate body 17; a connection interface 18 arranged on the circumferential side wall of the fixing plate body 17; a conical inner hole 19 arranged in the center of the fixing plate body 17; and a threaded fixing hole 20 arranged on the upper surface of the fixing plate body 17.

[0066] Specifically, in a specific embodiment of the present invention, the clamping inner sleeve 7 includes: a cylindrical inner sleeve 21 arranged in the tapered inner hole 19; a slotted hole 22 arranged on the cylindrical surface of the cylindrical inner sleeve 21; an axial step structure 23 arranged on the cylindrical inner sleeve 21; and a fastener arranged on the axial step structure and connected to the threaded fixing hole 20.

[0067] Among them, such as Figure 5 、 Figure 6As shown, in this embodiment, the clamping fixing plate 6 and the clamping inner sleeve 7 are provided to fix the first anti-rotation device 3 on the top of the cable; in the clamping fixing plate 6, four connection interfaces 18 are provided, which are evenly distributed on the circumferential side wall of the fixing plate body 17; as for the clamping inner sleeve 7, it is composed of the cylindrical inner sleeve 21, the slot 22, the shaft step structure 23 and the threaded fastener, the cylindrical inner sleeve 21 is embedded in the tapered inner hole 19, and the sling cable 1 passes through the cylindrical inner sleeve 21. The aperture of the tapered inner hole 19 decreases from top to bottom. Since a slot 22 is provided on the cylindrical surface of the cylindrical inner sleeve 21, when the fastener is connected to the threaded fixing hole 20, the cylindrical inner sleeve 21 gradually moves downward, and the side wall of the tapered inner hole 19 squeezes the cylindrical inner sleeve 21, so that the slot 22 becomes smaller, and the aperture of the cylindrical inner sleeve 21 gradually becomes smaller, and gradually fits closely to the sling cable, so that the cylindrical inner sleeve 21 is clamped on the sling cable 1, so that the first anti-rotation device 3 is fixed on the top of the cable.

[0068] Specifically, in a specific embodiment of the present invention, the first supporting mechanism 8 , the second supporting mechanism 12 and the third supporting mechanism 15 have the same structure; the first retaining ring 9 , the second retaining ring 13 and the third retaining ring 16 have the same structure.

[0069] Among them, such as Figure 2 、 Figure 3 、 Figure 4 As shown, in a specific embodiment of the present invention, the first supporting mechanism 8, the second supporting mechanism 12 and the third supporting mechanism 15 are each provided with four pieces, which are evenly spaced and arranged on the circumferential side walls of the clamping fixed plate 6, the rotating plate mechanism 10 and the bottom fixed plate 14.

[0070] Specifically, in a specific embodiment of the present invention, one or more second anti-spin devices 4 are provided.

[0071] In this embodiment, there is one second anti-rotation device 4. According to different lifting heights in the sling operation, multiple second anti-rotation devices 4 can be set in the middle position of the cable to ensure the stable operation of the sling lifting operation.

[0072] Specifically, in a specific embodiment of the present invention, the first support mechanism 8 or the second support mechanism 12 or the third support mechanism 15 includes: a first joint 24; a first flange 25 is provided at the end of the first joint 24; a retractable damper 26 connected to the first flange 25; and a compression spring 27 mounted on the retractable damper 26.

[0073] Among them, such as Figure 7As shown, in this embodiment, the first, second or third supporting mechanism 15 is composed of the first joint 24, the retractable damper 26 and the compression spring 27; the first joint 24 is provided to fix the retractable damper 26 on the circumferential side wall of the clamping fixed plate 6, the rotary plate mechanism 10 and the bottom fixed plate 14, and the retractable damper 26 is provided to quickly attenuate the energy of the collision movement process of the compression spring 27 and the first, second or third retaining ring 16.

[0074] Specifically, in a specific embodiment of the present invention, the telescopic damper 26 includes: a damper sleeve 28; a second flange 29 arranged at the front end of the damper sleeve 28, the second flange 29 being connected to the first flange 25; a third flange 30 arranged at the rear end of the damper sleeve 28; a damping telescopic rod 31 having one end arranged in the damper sleeve 28 and the other end connected to the first retaining ring 9 or the second retaining ring 13 or the third retaining ring 16; a fourth flange 32 arranged at the end of the damping telescopic rod 31; a second joint 33 connected to the fourth flange 32; the compression spring 27 is sleeved on the damping telescopic rod 31, one end of which is connected to the third flange 30 and the other end is connected to the fourth flange 32.

[0075] like Figure 8 As shown, in this embodiment, the main body of the telescopic damper 26 includes the damper sleeve 28 and the damping telescopic rod 31, and the internal cavity of the damper sleeve 28 and the damping telescopic rod 31 make a linear reciprocating motion along the axis; the second flange 29 and the third flange 30 are provided at both ends of the damper sleeve 28, and the second flange 29 is used to connect with the first flange 25 to fix the position of the telescopic damper 26. The fourth flange 32 is provided at the end of the damping telescopic rod 31, and the compression spring 27 is located between the third flange 30 and the fourth flange 32. When the spring 27 is compressed, the steel wire rope is in elastic contact with the fourth flange 32 to avoid damage to the flange due to distance collision; and, in this embodiment, the second joint 33 is specifically a ball hinge hole structure.

[0076] Specifically, in a specific embodiment of the present invention, the first retaining ring 9 or the second retaining ring 13 or the third retaining ring 16 includes: a universal ball head 34 connected to the second joint 33; a hollow ring 36 connected to the universal ball head 34; the lifting wire rope 2 passes through the hollow ring 36; and a connecting rod 35 arranged between the universal ball head 34 and the hollow ring 36.

[0077] Among them, such as Figure 9 As shown, in this embodiment, the universal ball head 34 is connected to the second joint 33, that is, the universal ball head 34 is arranged in the ball hinge hole structure and is movably connected to the ball hinge hole structure, which can prevent the overall horizontal deviation of each anti-rotation device from causing wire rope wear and movement tearing.

[0078] Specifically, in a specific embodiment of the present invention, the turntable mechanism 10 includes: a gear turntable 37 sleeved on the cable; a centering chuck 38 arranged in the gear turntable 37 and movably connected to the gear turntable 37; the centering chuck 38 is slidably engaged with the caliper 11; a mounting hole arranged in the center of the centering chuck 38, through which the lifting wire rope 2 passes; a thrust ball bearing 39 arranged in the mounting hole; a driving gear 40 meshing with the gear turntable 37; a power element 41 arranged on the centering chuck 38 and connected to the driving gear 40; the power element 41 is used to drive the driving gear 40 and the gear turntable 37 to perform a rotational motion, thereby driving the centering chuck 38 to rotate around a fixed axis, so that the caliper 11 rotates to clamp or release the lifting wire rope 2.

[0079] Specifically, in a specific embodiment of the present invention, the driving gear 40 is provided on the rotating shaft of the power element 41 , and a rack is provided on the inner wall of the gear rotating disk 37 , and the driving gear 40 is meshed with the rack.

[0080] Among them, such as Figure 10 、 Figure 11 As shown, in this embodiment, the rotary disk mechanism 10 is sleeved on the middle part of the cable and can clamp or loosen the cable; its clamping or loosening principle is specifically as follows: the gear rotary disk 37 and the centering chuck 38 are set, and the sling cable 1 passes through the gear rotary disk 37 and the centering chuck 38. The center of the centering chuck 38 is provided with the thrust ball bearing 39, which can perform fixed-axis rotation in the gear rotary disk 37; under the combination of the driving gear 40 and the power element 41, since the inner wall of the gear rotary disk 37 is provided with a rack, the driving gear 40 is engaged with the rack, and the Under the driving action of the power element 41, the driving gear 40 and the gear rotating disk 37 rotate, that is, the entire power element 41 rotates along the rack. Since the power element 41 is connected to the centering chuck 38, it drives the centering chuck 38 to rotate on a fixed axis; and because the caliper 11 is arranged in the gear rotating disk 37, the caliper 11 is slidably engaged with the centering chuck 38, and the rotation of the centering chuck 38 drives the caliper 11 to slide, thereby causing the caliper 11 to clamp or loosen the cable passing through the second anti-rotation device 4.

[0081] Specifically, in a specific embodiment of the present invention, a slideway 44 is provided at the bottom of the gear rotary plate 37 , and the caliper 11 is disposed in the slideway 44 and can slide along the slideway 44 .

[0082] Specifically, in a specific embodiment of the present invention, a slot track 42 is provided on the centering chuck 38; a protrusion 43 is provided on the caliper 11; the protrusion 43 is clamped in the slot track 42; when the centering chuck 38 rotates on a fixed axis under the action of the power element 41, the protrusion 43 is forced to slide along the slot track 42, thereby driving the caliper 11 to slide in the slide 44, so that the caliper 11 clamps or releases the cable passing through the middle.

[0083] Among them, such as Figure 12 As shown, in this embodiment, three slotted tracks 42 are provided on the centering chuck 38, and the power element 41 drives the driving gear 40 and the gear rotating disk 37 to rotate, and the caliper 11 slides on the three slotted tracks on the centering chuck 38 to ensure that multiple calipers 11 synchronously clamp the cable on the circumference.

[0084] Specifically, in a specific embodiment of the present invention, the spreader cable retracting and releasing device further includes: a controller connected to the power element 41 by signal.

[0085] In this embodiment, the controller is specifically a PLC, and the PLC is connected to the lifting drum encoder and the power element 41 signal, and the lifting drum encoder of the caliper 11 is linked to clamp the cable at the set position. When the drum encoder records that the lifting height reaches a certain position, it feeds back a signal to the PLC to control the action of the power element 41 in the second anti-rotation device 4: when the spreader is descending, the cable leaves the cable storage basket, the hanging part of the spreader becomes longer, and the lifting drum encoder records that the lifting height reaches the height. The PLC controls the power element 41 to make the caliper 11 move synchronously, and the caliper 11 clamps the cable so that the second anti-rotation device 4 rises with the cable; and when the spreader is lifting, the cable falls into the cable storage basket, and the lifting drum encoder records that the lifting height is reached, the PLC automatically controls the power element 41 to release the caliper 11, thereby preventing the second anti-rotation device 4 from rotating into the cable storage basket.

[0086] As described above, the spreader cable retracting and releasing device provided by the embodiment of the present invention can solve the problem that the spreader cable 1 and the wire rope become entangled and stuck together and cannot be separated during the spreader lifting process.For the hoist cable retracting and releasing device, its main structure consists of the first anti-rotation device 3, the second anti-rotation device 4 and the third anti-rotation device 5 and a controller, which are arranged in sequence at the top of the hoist cable 1, the middle of the cable and the outlet of the bottom cable storage basket, and are all connected to the lifting wire rope 2, and stretch out the lifting wire rope 2 to prevent it from rotating and entangled during the lifting operation; wherein, the first anti-rotation device 3 includes the clamping fixed disk 6, the clamping inner sleeve 7, the first support mechanism 8 and the first retaining ring 9, the clamping inner sleeve 7 is arranged in the clamping fixed disk 6, and is used to fix the clamping fixed disk 6 at the preset position of the hoist cable 1, and the lifting wire rope 2 at the top cable position passes through the first retaining ring 9 and passes through the first support mechanism 8 supports the steel wire ropes apart from each other so that the steel wire ropes are separated from each other during the lifting process of the spreader; secondly, the second anti-rotation device 4 is set, which includes a turntable mechanism 10, a caliper 11, a second support mechanism 12 and a second retaining ring 13. The turntable mechanism 10 is sleeved on the middle part of the cable. The cable in the middle position is stored in the cable storage basket when the spreader is in operation. The caliper 11 and the controller are set to clamp or loosen the cable. The controller is connected to the lifting drum encoder and the power element 41 signal. The caliper 11 is linked to the lifting drum encoder to clamp the cable at the set position. When the drum encoder records that the lifting height reaches a certain position, it feeds back a signal to the controller to control the action of the power element 41 in the second anti-rotation device 4: When the spreader is lowering, the cable leaves the cable storage basket, the hanging part of the spreader becomes longer, and the lifting drum encoder records that the lifting height reaches a certain height. The controller controls the power element 41 to make the caliper 11 move synchronously. The caliper 11 clamps the cable to make the second anti-rotation device 4 rise with the cable. When the spreader is lifting, the cable falls into the cable storage basket. When the lifting drum encoder records that the lifting height is reached, the controller automatically controls the power element 41 to release the caliper 11, thereby preventing the second anti-rotation device 4 from rotating into the cable storage basket. For the steel wire rope in the middle of the cable, the support principle is the same as above. The second supporting mechanism 12 and the second retaining ring 13 are provided to support the steel wire rope in the middle of the cable. At the bottom of the cable, that is, the cable storage basket The third anti-rotation device 5 is provided at the exit, and the cable at this position is stored in the cable storage basket when the sling is operating. Here, the cable passes freely through the bottom fixed plate 14, and for the steel wire rope at the bottom cable position, the support principle is the same as above, and the steel wire rope passes freely through the third retaining ring 16, and the third support mechanism 15 is used to support and unfold the steel wire ropes separately; in summary, the present retractable device is provided with the first anti-rotation device 3, the second anti-rotation device 4 and the third anti-rotation device 5, and the three are combined with each other to respectively support and unfold the steel wire ropes at the top, middle and bottom of the cable when the sling is operating, so that the steel wire ropes form an overall mutual isolation mechanism at the top, middle and bottom, effectively avoiding the steel wire rope and the cable from rotating and entangled, so that the cable can be retracted and released freely.Therefore, compared with the prior art, the technical solution provided by the present invention can ensure that the cables are normally stored in the cable storage basket during the lifting process, avoid cable damage and major property losses, and improve the operating efficiency of the gantry crane.

[0087] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable retracting device for a spreader, characterized in that: include: A first anti-rotation device provided on the top of the spreader cable; The first anti-rotation device includes: a clamping plate mounted on the cable; a clamping inner sleeve disposed in the clamping plate and tightly connected to the cable; a first supporting mechanism disposed on the circumferential side wall of the clamping plate; and a first retaining ring disposed at the end of the first supporting mechanism and connected to the lifting wire rope. A second anti-rotation device provided in the middle of the spreader cable; The second anti-rotation device includes: a rotary disk mechanism mounted on the cable; a clamp disposed in the rotary disk mechanism for clamping or loosening the cable; a second support mechanism disposed on a circumferential side wall of the rotary disk mechanism; and a second retaining ring disposed at an end of the second support mechanism and connected to the lifting wire rope. A third anti-rotation device provided at the outlet of the cable storage basket; The third anti-rotation device includes: a bottom fixing plate sleeved on the cable; a third supporting mechanism provided on the circumferential side wall of the bottom fixing plate; a third retaining ring provided at the end of the third supporting mechanism and connected to the lifting wire rope; The clamping plate comprises: Fixed disk body; A connection interface provided on the circumferential side wall of the fixed disk body; a tapered inner hole provided in the center of the fixed disk body; A threaded fixing hole is provided on the upper surface of the fixed disk body; the rotary disk mechanism includes: A gear turntable mounted on the spreader cable; A centering chuck disposed in the gear rotary disk and movably connected to the gear rotary disk; The centering chuck is slidably engaged with the caliper; A mounting through hole is provided at the center of the centering chuck, and the lifting wire rope passes through the mounting through hole; a thrust ball bearing disposed in the mounting through hole; a driving gear meshing with the gear rotating disk; A power element provided on the centering chuck and connected to the driving gear; The power element is used to drive the driving gear and the gear rotating disk to perform a rotary motion, thereby driving the centering chuck to rotate on a fixed axis, and causing the caliper to rotate to clamp or loosen the lifting wire rope.

2. The cable retracting device for a spreader according to claim 1, characterized in that: The clamping inner sleeve comprises: a cylindrical inner sleeve disposed in the tapered inner hole; A slotted hole is provided on the cylindrical surface of the cylindrical inner sleeve; A shaft step structure provided on the cylindrical inner sleeve; A fastener is provided on the shaft step structure and connected to the threaded fixing hole.

3. The cable retracting device for a spreader according to claim 1, characterized in that: The first supporting mechanism, the second supporting mechanism and the third supporting mechanism have the same structure; The first retaining ring, the second retaining ring and the third retaining ring have the same structure.

4. The cable retracting device for a spreader according to claim 3, characterized in that: The first supporting mechanism, the second supporting mechanism, or the third supporting mechanism comprises: First connector; The first joint end is provided with a first flange; a retractable damper connected to the first flange; A compression spring is sleeved on the telescopic damper.

5. The cable retracting device for a spreader according to claim 4, characterized in that: The retractable damper comprises: damper sleeve; a second flange provided at the front end of the damper sleeve, the second flange being connected to the first flange; a third flange provided at the rear end of the damper sleeve; A damping telescopic rod having one end disposed in the damper sleeve and the other end connected to the first retaining ring, the second retaining ring, or the third retaining ring; a fourth flange provided at the end of the damping telescopic rod; a second joint connected to the fourth flange; The compression spring is sleeved on the damping telescopic rod, with one end connected to the third flange and the other end connected to the fourth flange.

6. The cable retracting device for a spreader according to claim 5, characterized in that: The first retaining ring, the second retaining ring, or the third retaining ring comprises: a universal ball joint connected to the second joint; A hollow ring connected to the universal ball joint; The lifting wire rope passes freely through the hollow ring; A connecting rod is arranged between the universal ball head and the hollow ring.

7. The cable retracting device for a spreader according to claim 6, characterized in that: The centering chuck is provided with a notched track; The caliper is provided with a bump; The protrusion is clamped in the notch track; The protrusion can slide along the slot track to drive the caliper to rotate.

8. The cable retracting device for a spreader according to claim 7, characterized in that: The spreader cable retracting and releasing device further comprises: A controller is signal-connected to the power element.

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