Crane sling cable guide frame
By designing horizontal guide rails on the crane spreader cable fairlead to roll with the movable body, and providing fairleads and elastic buffer elements in the movable body, the problem of cable bending or strong collision on the fairlead is solved. Effective buffering of forces in all directions of the cable and extension of cable life are achieved.
Patent Information
- Application Number
- CN202421093393.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-20
AI Technical Summary
During the lifting/descending process of the existing sling cable cable guide frame, the existing sling cable guide frame cannot effectively buffer and release the stress in all directions of the cable, resulting in obvious bends or strong collisions on the cable guide frame, affecting the service life of the cable.
Design a crane spreader cable fairlead, which adopts two horizontal guide rails arranged parallel to each other and rollingly matched with the moving body. The moving body is equipped with a fairlead and an elastic buffer element to release the collision when the cable shakes or swings through spring buffering. force to avoid rigid collision between the cable and the fairlead.
It can effectively offset the various forces on the cable at the fairlead, reduce the risk of cable damage, extend the service life of the cable, and avoid problems such as cable skin breakage and internal core breakage.
Smart Images
Figure CN222374213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable guide racks, in particular to a cable guide rack for crane hoisting equipment. Background Art
[0002] The port crane spreader is suspended under the trolley frame by a steel wire rope, and the spreader cable reel is installed on the trolley frame. The other end of the cable is fixed on the spreader after passing through the cable guide on the spreader, providing the spreader with power and communication signals, etc. During the movement of the trolley frame, the spreader will move with the steel wire rope, but because the spreader is suspended under the trolley frame, under the action of inertia, the spreader (cable guide) will form a certain lag offset relative to the trolley frame (reel). At this time, it is necessary to adjust the angle of the cable relative to the spreader by moving the moving body (with a cable guide structure) on the cable guide frame to offset this lag offset of the spreader relative to the trolley frame and avoid obvious bending of the cable at the cable guide structure or strong collision.
[0003] refer to Figure 1 Most existing cable guides for slings are equipped with two iron round bars 1 (as slide rails), and use nylon blocks 2 as moving bodies, the central through hole of which is the cable guide structure, which is slidably fitted between the two round bars through the arc grooves on both sides of the nylon block (that is, the nylon block is sandwiched between the two round bars and can slide). The cable guide has the following problems during use:
[0004] When the hoist begins to lift / lower, in order to prevent the cable from sagging too much, the cable reel of the hoist will generally reel in the cable first, tighten the cable upward, and maintain a certain torque to prevent the cable from sagging. When the hoist starts to move, the cable reel will continue to rotate to keep the cable taut. In the above process, the initial torque of the reel is large, which will cause the cable to shake. When the shaking is transmitted to the cable guide, it will increase significantly. However, the nylon block cable guide structure has no relevant buffer. The shaking of the cable can only be offset by the sliding of the nylon block along the two round rods. The effect is poor, and the cable and the nylon block still collide strongly from time to time. In addition, the sliding of the nylon block can only offset the force along the length of the round rod, and cannot offset the force of the cable in other directions. In some cases, the force of the nylon block will form a moving stop point with the round rod, causing the nylon block to be unable to slide on the round rod. At this time, it will also cause a strong collision between the cable and the nylon block, which will cause damage to the cable in the long run.
[0005] In addition, the nylon block and the two iron round bars are in a sliding fit with large friction. When the trolley frame moves forward or backward, the nylon block may not slide smoothly, causing the cable to be significantly bent at the nylon block cable guide structure, resulting in cable breakage, cable core breakage, etc., affecting the service life of the cable. Utility Model Content
[0006] In view of the defects and shortcomings in the above-mentioned prior art, the utility model proposes a crane hoist cable guide to solve the problem of how to effectively buffer and release the forces in all directions of the hoist cable to avoid obvious bending or strong collision of the cable at relevant positions on the cable guide.
[0007] The above-mentioned purpose of the utility model is achieved through the following technical solutions:
[0008] A crane hoist cable guide frame is provided with two horizontal guide rails arranged parallel to each other and spaced apart, and also provided with:
[0009] A moving body rollingly matched with the two guide rails, the moving body being a vertical assembly structure with a central through hole extending vertically; and
[0010] A cable guide for movably passing the cable, the cable guide is movably passed through the central through hole and both ends extend out of the central through hole, and the outer diameter of the cable guide is smaller than the aperture of the central through hole;
[0011] Among them, a plurality of hanging openings are formed on the hole wall of the central through hole, and the plurality of hanging openings are evenly distributed along the circumference. A plurality of hanging rods are circumferentially distributed correspondingly to the middle part of the outer wall of the fairlead, and the plurality of hanging rods are movably hung in the corresponding hanging openings, and an elastic buffer element is provided between each hanging rod and the corresponding hanging opening to buffer and release the collision force generated at the fairlead when the cable shakes or swings.
[0012] Preferably, the movable body includes a cover plate and a support, a first through hole is opened at the center of the cover plate, a second through hole is opened at the center of the support, the apertures of the first through hole and the second through hole are consistent, the cover plate and the support are assembled into one body up and down, and the first through hole and the second through hole are spliced and connected to form the central through hole.
[0013] Preferably, the support has a support base plate, the second through hole passes through the center of the support base plate, the horizontal projection outer contours of the cover plate and the support base plate overlap and are rectangular, the cover plate has first connecting holes at the four corners, and the support base plate has corresponding second connecting holes with the same hole diameter as the first connecting holes at the four corners, and each first connecting hole is connected to the corresponding second connecting hole by bolts and nuts.
[0014] Preferably, a cross-shaped boss is formed on the upper surface of the support base plate, the second through hole passes through the center of the cross-shaped boss, the cover plate is crimped onto the cross-shaped boss, and together with the cross-shaped boss, four roller mounting grooves are formed at the four corners of the support base plate, and each second connecting hole is located within the horizontal projection range of the corresponding roller mounting groove.
[0015] Preferably, a shaft sleeve is coaxially fixed at the opening of the second connecting hole in the roller mounting groove, the inner diameter of the shaft sleeve is consistent with the hole diameter of the second connecting hole, a bearing is sleeved and installed on the outer periphery of the shaft sleeve, and the outer peripheral surface of the bearing protrudes from the edge of the support bottom plate close to the corresponding guide rail, and rolls with the guide rail;
[0016] The bolts are sequentially passed through the corresponding first connection holes, the shaft sleeves and the second connection holes and then fixed with nuts.
[0017] Preferably, the four branches of the cross-shaped boss are respectively provided with axially extending grooves with slots opened on the wall of the second through hole, and the upper end of the groove is open to the surface of the branch and the lower end is closed inside the branch;
[0018] Correspondingly, four protrusions are formed on the cover plate extending downward along the hole wall of the first through hole, and the four protrusions are adapted to be inserted into the upper parts of the four grooves, thereby surrounding the four hanging openings;
[0019] Four hanging rods are correspondingly arranged at the middle part of the outer wall of the fairlead.
[0020] Preferably, the elastic buffer element is a spring, one end of which is sleeved on the outer circumference of the hanging rod and the end abuts the outer wall of the cable guide barrel, and the other end is radially clearance-fitted in the hanging opening and the end abuts the bottom wall of the groove. When the spring is fully compressed, its length is greater than the length of the hanging rod.
[0021] Preferably, the cross-shaped boss has a symmetrical structure, and its four branches are arranged along the symmetry axis of the support base plate.
[0022] Preferably, the arc-shaped transitions at both ends of the fairlead are in a trumpet shape.
[0023] Preferably, the four angles of the cross-shaped boss are all rounded.
[0024] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:
[0025] In the utility model, when the sling is offset to a certain extent relative to the trolley frame, the sling cable drives the moving body, and the moving body moves by rolling on the guide rail through the bearing. Compared with the nylon block sliding on the iron round rod, the movement is smoother, and the use of bearings as rolling wheels can effectively extend the service life of the moving body;
[0026] The fairlead drum and the moving body together constitute an internal and external structure with flexible connection. A spring buffer is arranged between the fairlead drum on the inner side and the moving body on the outer side. When the hoist cable shakes or swings under the force and collides with the fairlead drum in the moving body, the force generated by the collision on the fairlead drum is released through the spring buffer to avoid rigid collision between the cable and the fairlead drum. In addition, spring buffers are arranged in the front, rear, left and right directions, which is beneficial to offset the force on the cable in all directions. It can completely avoid the cable from being broken or internal core broken due to obvious bending or strong collision at the fairlead drum, thereby effectively extending the service life of the cable.
[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall top view of the cable guide frame in the prior art;
[0029] Figure 2 This is a disassembled schematic diagram of a moving body on a cable guide frame according to an embodiment of the utility model (with a cable guide barrel installed);
[0030] Figure 3 It is a three-dimensional schematic diagram of a moving body on a cable guide frame of an embodiment of the utility model (equipped with a cable guide drum);
[0031] Figure 4 for Figure 3 Front view;
[0032] Figure 5 for Figure 4 Middle AA section view;
[0033] Figure 6 It is the top view of the support;
[0034] Figure 7 It is the front view of the support;
[0035] Figure 8 This is a three-dimensional diagram of the fairlead;
[0036] Figure 1 Middle: round rod 1, nylon block 2;
[0037] Figure 2 to Figure 8 In the figure: moving body 100, cover plate 110, first through hole 111, first connecting hole 112, protrusion 113, support 120, second through hole 121, support base plate 122, second connecting hole 1221, cross-shaped boss 123, groove 124, fairlead 200, hanging rod 210, elastic buffer element 300, bolt 400, nut 500, bushing 600, bearing 700. DETAILED DESCRIPTION
[0038] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;
[0039] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;
[0040] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings;
[0041] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be said to be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does 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 utility model.
[0042] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0043] The crane hoist cable guide rack of the utility model is provided with a moving body 100 which can roll and move thereon, and a guide tube 200 is flexibly installed in the moving body, which can offset the forces in various directions of the cable (not shown in the figure), and completely avoid the cable from being broken or internally broken due to obvious bending or strong collision of the cable at the guide tube, thereby effectively extending the service life of the cable.
[0044] The cable guide frame is provided with two horizontal guide rails (not shown) arranged parallel to each other and spaced apart, a moving body 100 rollingly matched with the two guide rails, and a cable guide drum 200 for the cable to be movably passed through. Figure 2 , Figure 3 The movable body is an upper and lower assembly structure, with a central through hole extending from top to bottom, and the fairlead 200 is movably arranged in the central through hole and its two ends extend out of the central through hole. The outer diameter of the fairlead is smaller than the diameter of the central through hole, which is convenient for the installation of the fairlead on the one hand, and has a certain movable space on the other hand.
[0045] Among them, a plurality of hanging openings are formed on the hole wall of the central through hole, and the plurality of hanging openings are evenly distributed along the circumference. A plurality of hanging rods 210 are correspondingly arranged in the middle of the outer wall of the fairlead 200 and are circumferentially distributed therewith. The plurality of hanging rods are movably hung in the corresponding hanging openings, and an elastic buffer element 300 is arranged between each hanging rod and the corresponding hanging opening to buffer the collision force generated at the fairlead when the cable shakes or swings. For example, two hanging openings can be arranged relatively, and are respectively located on the left and right sides of the moving route of the moving body 100. In this way, the purpose of the utility model can be better achieved by utilizing the smooth rolling movement of the moving body and the elastic buffering between the two sets of hanging openings and the hanging rods.
[0046] As is known, the guide rail on the cable guide is arranged parallel to the moving direction of the trolley frame on the crane. For other unmentioned structures on the guide rail and the cable guide, please refer to the prior art and will not be described in detail here.
[0047] refer to Figure 2 , Figure 3 , Figure 6 , Figure 7 The mobile body 100 includes a cover plate 110 and a support 120, a first through hole 111 is opened at the center of the cover plate, and a second through hole 121 is opened at the center of the support, the apertures of the first through hole and the second through hole are consistent, the cover plate 110 and the support 120 are assembled into one body from top to bottom, and the first through hole 111 and the second through hole 121 are spliced and connected to form the central through hole.
[0048] Further, the support 120 has a support base plate 122, the second through hole 121 passes through the center of the support base plate, the horizontal projection outer contours of the cover plate 110 and the support base plate 122 overlap and are rectangular, preferably square, the cover plate 110 has first connection holes 112 at the four corners, and the four first connection holes are distributed in a square shape, and the support base plate 122 has corresponding second connection holes 1221 with the same aperture as the first connection holes at the four corners, and each first connection hole is connected to the corresponding second connection hole by a bolt 400 and a nut 500. The bolt used is a long bolt, and one end of the tail of the screw is provided with an external thread that matches the nut, and the rest is a bare rod.
[0049] refer to Figure 2 , Figure 3 , Figure 6 In some embodiments, a cross-shaped boss 123 is formed on the upper surface of the support base plate 122, and the second through hole 121 passes through the center of the cross-shaped boss. The cover plate 110 is crimped onto the cross-shaped boss 123 and forms four roller mounting grooves with the cross-shaped boss at the four corners of the support base plate 122. Each second connecting hole 1221 is located within the horizontal projection range of the corresponding roller mounting groove.
[0050] refer to Figure 2 , Figure 4 , Figure 5 A shaft sleeve 600 is coaxially fixed at the opening of the second connecting hole 1221 in the roller mounting groove, and the inner diameter of the shaft sleeve is consistent with the aperture of the second connecting hole. A bearing 700 is sleeved and installed on the outer periphery of the shaft sleeve. The outer peripheral surface of the bearing protrudes from the edge of the support base plate 122 close to the corresponding guide rail, and rolls with the guide rail (not shown in the figure), that is, the movement of the moving body 100 installed with the guide drum 200 along the guide rail is achieved by the bearing 700 rolling on the guide rail, and this arrangement can avoid the moving body from rubbing against the guide rail in the direction of movement, thereby ensuring smooth movement of the moving body.
[0051] Based on the above arrangement, four bolts 400 are respectively passed through the corresponding first connection hole 112, the shaft sleeve 600 and the second connection hole 1221 and then fixed with nuts 500, that is, the cover plate 110 and the support 120 are fixed as a whole.
[0052] In some embodiments, there are four hanging openings, and correspondingly, four hanging rods 210 are provided in the middle of the outer wall of the fairlead 200. Specifically, the four branches of the cross-shaped boss 123 are respectively provided with axially extending grooves 124 with slots opened on the hole wall of the second through hole 121, and the upper end of the groove is open on the surface of the branch and the lower end is closed in the branch, so that the fairlead 200 is conveniently inserted from the upper end of the second through hole 121, and at the same time, the four hanging rods 210 (with elastic buffer elements 300 installed) are aligned with the upper ends of the four grooves 124 and lowered to be hung on the lower ends of the grooves. Corresponding to the four grooves 124, four protrusions 113 are formed on the cover plate 110 and extend downward along the wall of the first through hole 111. After the fairing 200 is hung on the support 120, the cover plate 110 is put on the outer periphery of the fairing 200 through the first through hole 111 and crimped on the cross-shaped boss 123. In this process, the four protrusions 113 are adapted to be inserted into the upper parts of the four grooves 124, and each protrusion and the corresponding groove form a hanging opening.
[0053] In some embodiments, the elastic buffer element 300 is a spring, one end of which is sleeved on the outer periphery of the hanging rod 210 and the end abuts the outer wall of the fairlead 200, and the other end is radially clearance-matched in the hanging port and the end abuts the bottom wall of the groove 124. It should be understood that the lower side of the other end of the spring is supported on the closed lower end of the groove 124, and "radial clearance fit" refers to the radial clearance fit between the other end of the spring and the two side walls of the groove 124, and the clearance fit between the lower side of the protrusion 113, that is, the hanging port radially limits the other end of the spring while leaving a certain radial deformation and displacement space for it, which can avoid excessive radial deformation or displacement of the spring and extend the service life of the spring. In addition, when the spring is fully compressed, the length is greater than the length of the hanging rod 210, that is, each hanging rod is long enough to be hung on the hanging port but there is a certain distance between its end and the bottom wall of the groove 124. As set above, the flexible installation of the fairlead 200 can be better achieved. It should be noted that the elastic buffer element 300 can be other elastic components, such as rubber tubes, plastic tubes or corrugated tubes.
[0054] In some embodiments, the cross-shaped boss 123 is integrally formed with the support base plate 122, and the cross-shaped boss is symmetrical, and its four branches are arranged along the symmetry axis of the support base plate (the line connecting the midpoints of the opposite sides), which is convenient for processing and forming the support and the structures thereon. Furthermore, the four angles of the cross-shaped boss 123 are all rounded to match the arc-shaped clearance of the outer peripheral surface of the bearing 700.
[0055] refer to Figure 8 In some preferred embodiments, the arc-shaped transitions at both ends of the fairlead 200 are flared to increase the bending radius at the fairlead mouth when the cable is deflected, thereby reducing the shear force on the fairlead when the cable is deflected and preventing the cable from being cut at the mouth.
[0056] With the utility model, when the trolley frame moving hoist is offset relative to the trolley frame, the cable offset drives the moving body 100, and the moving body can move smoothly by rolling along the guide rail through the bearing 700, effectively avoiding the cable from bending at the fairlead; when the hoist cable is jittered or swung by force and collides with the fairlead 200 in the moving body 100, the force generated by the collision of the fairlead can be released by the spring buffer, effectively avoiding the rigid collision between the cable and the fairlead. The utility model can fully offset various forces on the cable at the fairlead, effectively reducing the damage of the cable at this position.
[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and concept of the present invention, which should be included in the protection scope of the present invention.
Claims
1. A cable guide for a crane hoist, provided with two horizontal guide rails arranged parallel to each other and spaced apart, characterized in that: Also features: A moving body rollingly matched with the two guide rails, the moving body being a vertical assembly structure with a central through hole extending vertically; and A cable guide for movably passing the cable, the cable guide is movably passed through the central through hole and both ends extend out of the central through hole, and the outer diameter of the cable guide is smaller than the aperture of the central through hole; Among them, a plurality of hanging openings are formed on the hole wall of the central through hole, and the plurality of hanging openings are evenly distributed along the circumference. A plurality of hanging rods are circumferentially distributed correspondingly to the middle part of the outer wall of the fairlead, and the plurality of hanging rods are movably hung in the corresponding hanging openings, and an elastic buffer element is provided between each hanging rod and the corresponding hanging opening to buffer and release the collision force generated at the fairlead when the cable shakes or swings.
2. The crane hoist cable guide according to claim 1, characterized in that: The movable body comprises a cover plate and a support, a first through hole is opened at the center of the cover plate, a second through hole is opened at the center of the support, the apertures of the first through hole and the second through hole are consistent, the cover plate and the support are assembled into one body from top to bottom, and the first through hole and the second through hole are spliced and connected to form the central through hole.
3. The crane hoist cable guide according to claim 2, characterized in that: The support has a support base plate, the second through hole passes through the center of the support base plate, the horizontal projection outer contours of the cover plate and the support base plate overlap and are rectangular, the cover plate has first connecting holes at the four corners, and the support base plate has corresponding second connecting holes with the same hole diameter as the first connecting holes at the four corners, and each first connecting hole is connected to the corresponding second connecting hole by bolts and nuts.
4. The crane hoist cable guide according to claim 3, characterized in that: A cross-shaped boss is formed on the upper surface of the support base plate, and the second through hole passes through the center of the cross-shaped boss. The cover plate is crimped onto the cross-shaped boss and together with the cross-shaped boss, forms four roller mounting grooves at the four corners of the support base plate, and each second connecting hole is located within the horizontal projection range of the corresponding roller mounting groove.
5. The crane hoist cable guide according to claim 4, characterized in that: A shaft sleeve is coaxially fixed at the opening of the second connecting hole in the roller mounting groove, the inner diameter of the shaft sleeve is consistent with the hole diameter of the second connecting hole, a bearing is sleeved and installed on the outer periphery of the shaft sleeve, and the outer peripheral surface of the bearing protrudes from the edge of the support bottom plate close to the corresponding guide rail, and rolls with the guide rail; The bolts are sequentially passed through the corresponding first connection holes, the shaft sleeves and the second connection holes and then fixed with nuts.
6. The crane hoist cable guide according to claim 4, characterized in that: The four branches of the cross-shaped boss are respectively provided with axially extending grooves with slots opened on the wall of the second through hole, the upper ends of the grooves are open on the surface of the branches, and the lower ends are closed inside the branches; Correspondingly, four protrusions are formed on the cover plate extending downward along the hole wall of the first through hole, and the four protrusions are adapted to be inserted into the upper parts of the four grooves, thereby surrounding the four hanging openings; Four hanging rods are correspondingly arranged at the middle part of the outer wall of the fairlead.
7. The crane hoist cable guide according to claim 6, characterized in that: The elastic buffer element is a spring, one end of which is sleeved on the outer circumference of the hanging rod and the end abuts the outer wall of the cable guide tube, and the other end is radially fitted in the hanging opening and the end abuts the bottom wall of the groove. When the spring is fully compressed, its length is greater than the length of the hanging rod.
8. The crane hoist cable guide according to claim 6, characterized in that: The cross-shaped boss is of symmetrical structure, and its four branches are arranged along the symmetry axis of the support base plate.
9. The crane hoist cable guide according to claim 1, characterized in that: The two ends of the fairlead have arc-shaped transitions to form a bell-mouth shape.
10. The crane hoist cable guide according to claim 4, characterized in that: The four included angles of the cross-shaped boss are all rounded.