Cable guide for a portal crane

Abstract

The utility model discloses a cable guiding device of portal crane relates to port hoisting machinery technical field, this cable guiding device of portal crane, include: mounting panel, fixed setting in crane, horizontal pivot, fixed setting in mounting panel bottom, vertical pivot, rotation setting in horizontal pivot bottom, guide frame, fixed setting in vertical pivot bottom, the guide frame passes through horizontal pivot and vertical pivot, so that the guide frame can swing in vertical plane around horizontal pivot, and can swing in horizontal plane around vertical pivot, this cable guiding device of portal crane, through the universal joint structure of horizontal pivot and vertical pivot constitution, and guiding device can according to the tension and motion trend of cable, in horizontal and vertical direction carry out adaptive swing, timely release the torsional stress and bending stress of cable, avoid the kink and jam of cable, improve the service life of cable.

Description

Technical Field

[0001] This utility model relates to the field of port crane technology, specifically to a cable guiding device for a gantry crane. Background Technology

[0002] Gantry cranes are common heavy-duty loading and unloading equipment in ports and docks. Their power and signals are usually transmitted through hanging cables, one end of which is fixed to the gantry and the other end is retracted or dragged as the crane moves.

[0003] Currently, under the operation of cranes and the action of wind, cables are prone to torsion. Fixed guiding devices will cause torsional stress to accumulate, leading to damage to the internal structure of the cable, core breakage, or even the cable twisting into a "twisted" shape and getting stuck, which in turn reduces the service life of the cable. Utility Model Content

[0004] The purpose of this utility model is to provide a cable guiding device for a gantry crane to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cable guiding device for a gantry crane, comprising: a mounting plate fixedly mounted on the crane; a horizontal rotating shaft fixedly mounted at the bottom end of the mounting plate; a vertical rotating shaft rotatably mounted at the bottom end of the horizontal rotating shaft; a guide frame fixedly mounted at the bottom end of the vertical rotating shaft, wherein the guide frame, through the horizontal and vertical rotating shafts, is able to swing about the horizontal rotating shaft in a vertical plane and about the vertical rotating shaft in a horizontal plane; and a plurality of guide seats fixedly mounted at the bottom end of the guide frame to constrain the cable.

[0006] Preferably, it further includes: a first positioning roller, rotatably disposed inside the guide seat, the first positioning roller being located near the bottom end; an adjusting frame, slidably disposed inside the guide seat, the adjusting frame having a second positioning roller rotatably disposed inside; and an adjusting bolt, threaded onto the guide frame, the bottom end of the adjusting bolt being rotatably disposed with the top end of the adjusting frame, the adjusting bolt being configured such that when rotated, the first positioning roller and the second positioning roller are either close to or far apart.

[0007] Preferably, it further includes: a positioning groove formed on both sides of the inner side wall of the guide seat; and a positioning block fixedly disposed on both sides of the adjustment frame, wherein the outer surface of the positioning block is slidably disposed with respect to the inside of the positioning groove.

[0008] Preferably, it further includes: a clearance groove, which is formed at the bottom end of the adjustment frame; the surfaces of the first positioning roller and the second positioning roller are both provided with arc-shaped grooves so that the cable is limited.

[0009] Preferably, it further includes: a shaft block disposed between the horizontal rotating shaft and the vertical rotating shaft, the shaft block having a rotating groove on its side; and a connecting bolt fixedly disposed on the horizontal rotating shaft and the vertical rotating shaft, one end of the connecting bolt being rotatably disposed inside the rotating groove.

[0010] Preferably, it further includes: a protective sleeve inserted inside the rotating groove, wherein the connecting bolt is located inside the protective sleeve.

[0011] Preferably, it further includes: a limiting block, which is fixedly disposed at the bottom end of the mounting plate to limit the rotation angle between the horizontal and vertical rotating shafts.

[0012] This utility model provides a cable guiding device for a gantry crane, which has the following advantages: (1) The present invention uses a universal hinge structure composed of a horizontal rotating shaft and a vertical rotating shaft. The guiding device can adaptively swing in the horizontal and vertical directions according to the tension and movement trend of the cable, release the torsional stress and bending stress of the cable in time, avoid the cable kinking and jamming, and improve the service life of the cable.

[0013] (2) By rotating the adjusting bolt, the adjusting frame moves inside the guide seat, which changes the gap between the first positioning roller and the second positioning roller, so that the first positioning roller and the second positioning roller can limit the cables of different sizes, thus improving practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the structure between the mounting plate and the guide frame in this utility model; Figure 3 This is an exploded view of the internal structure of the guide seat in this practical application.

[0015] In the diagram: 1. Mounting plate; 2. Horizontal rotating shaft; 3. Vertical rotating shaft; 4. Guide frame; 5. Shaft block; 6. Connecting bolt; 7. Rotating groove; 8. Protective sleeve; 9. Guide seat; 10. Positioning roller No. 1; 11. Adjusting frame; 12. Positioning roller No. 2; 13. Adjusting bolt; 14. Positioning block; 15. Positioning groove; 16. Clearance groove; 17. Limiting block. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] This utility model provides a technical solution: Referring to 1-3, in this embodiment, a cable guiding device for a gantry crane includes: a mounting plate 1, fixedly mounted on the crane, the mounting plate 1 preferably being made of structural steel plate with good strength and weldability, and fastened to the crane gantry legs by high-strength bolts to ensure the reliability of load bearing; a horizontal rotating shaft 2, fixedly mounted at the bottom end of the mounting plate 1; and a vertical rotating shaft 3, rotatably mounted at the bottom end of the horizontal rotating shaft 2. The guide frame 4 is fixedly installed at the bottom of the vertical rotating shaft 3. The guide frame 4 can be a frame structure welded from channel steel or square steel, which reduces its own weight while ensuring rigidity. The guide frame 4 can swing around the horizontal rotating shaft 2 in the vertical plane and around the vertical rotating shaft 3 in the horizontal plane through the horizontal rotating shaft 2 and the vertical rotating shaft 3. Several guide seats 9 are fixedly installed at the bottom of the guide frame 4 to constrain the cable. The horizontal rotating shaft 2 and the vertical rotating shaft 3 can be made of steel with heat treatment to ensure that they have sufficient strength and wear resistance.

[0018] It also includes: a first positioning roller 10, which is rotatably disposed inside the guide seat 9, with the first positioning roller 10 located near the bottom end; an adjusting frame 11, which is slidably disposed inside the guide seat 9, with a second positioning roller 12 rotatably disposed inside the adjusting frame 11; and an adjusting bolt 13, which is threaded onto the guide frame 4. The adjusting bolt 13 can be made of fine thread to achieve more precise gap adjustment. The bottom end of the adjusting bolt 13 is rotatably disposed with the top end of the adjusting frame 11. When the adjusting bolt 13 is rotated, the first positioning roller 10 and the second positioning roller 12 are brought closer together or further apart.

[0019] The wheels of the No. 1 positioning roller 10 and the No. 2 positioning roller 12 are preferably made of wear-resistant and cable sheath-friendly materials such as nylon or copper-based powder metallurgy. Their shafts can be made of stainless steel and equipped with miniature deep groove ball bearings or powder metallurgy oil-impregnated bushings to ensure that the rollers rotate flexibly, converting sliding friction into rolling friction and minimizing wear on the cable.

[0020] It also includes: positioning grooves 15, which are formed on the inner two side walls of the guide seat 9; positioning blocks 14, which are fixedly set on both sides of the adjusting frame 11, and the outer surface of the positioning blocks 14 is slidably set with the inside of the positioning grooves 15.

[0021] The positioning groove 15 and the positioning block 14 form a sliding guide pair, which ensures that the adjustment frame 11 will not deflect or get stuck during the up and down movement. The mating surfaces of the positioning block 14 and the positioning groove 15 can be precision machined to reduce frictional resistance, or coated with a layer of friction-reducing material such as polytetrafluoroethylene.

[0022] It also includes: a clearance groove 16, which is opened at the bottom of the adjustment frame 11; the surfaces of the first positioning roller 10 and the second positioning roller 12 are both provided with arc-shaped grooves to limit the cable. The radius of curvature of the arc-shaped groove should be slightly larger than the radius of the target cable to form a well-encompassing limiting space. The surface of the arc-shaped groove is smooth and burr-free, and can be polished. The design of setting the clearance groove 16 ensures that there is enough room for movement at the bottom of the adjustment frame 11 during the adjustment process, avoiding interference with the first positioning roller 10.

[0023] It also includes: a shaft block 5, which is disposed between the horizontal rotating shaft 2 and the vertical rotating shaft 3. The shaft block 5, as the core component of the universal joint, can be made of alloy structural steel and quenched to improve its contact strength and wear resistance. The side of the shaft block 5 is provided with a rotating groove 7; a connecting bolt 6, which is fixedly disposed on the horizontal rotating shaft 2 and the vertical rotating shaft 3. One end of the connecting bolt 6 is rotatably disposed inside the rotating groove 7. The rotating pair formed by the connecting bolt 6 and the rotating groove 7 ensures flexible rotation while avoiding excessive sway.

[0024] It also includes: a protective sleeve 8, which is inserted into the rotating groove 7, and a connecting bolt 6 located inside the protective sleeve 8, which can avoid frictional wear between the rotating groove 7 and the connecting bolt 6 and improve service life.

[0025] It also includes: a limiting block 17, which is fixedly installed at the bottom of the mounting plate 1 to limit the rotation angle between the horizontal rotating shaft 2 and the vertical rotating shaft 3. The limiting block 17 is usually welded to the mounting plate 1, and its limiting angle needs to be set according to the actual working conditions and the requirement to avoid interference with the surrounding structure. A wear-resistant steel plate can be welded to the contact surface of the limiting block 17, or a replaceable nylon block can be installed at the contact point to buffer the impact and reduce noise.

[0026] This utility model provides a cable guiding device for a gantry crane, the specific working principle of which is as follows: During operation, the cable passes between the first positioning roller 10 and the second positioning roller 12, whose gaps have been adjusted. When the cable is subjected to force due to crane operation or wind, the force is transmitted to the guide seat 9 and the guide frame 4. The guide frame 4 rotates in the rotating groove 7 of the shaft block 5 through the connecting bolt 6, realizing pitch swing around the horizontal rotating axis 2 and horizontal swing around the vertical rotating axis 3, thus forming a multi-degree-of-freedom adaptive motion, which releases the torsional and bending stress of the cable in time. The roller structure ensures that the cable is always in a low-friction rolling state at the guide point. The limit block 17 ensures that the entire swing mechanism works within a safe angle range.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable guiding device for a gantry crane, characterized in that, include: Mounting plate (1) is fixedly mounted on the crane; A horizontal rotating shaft (2) is fixedly installed at the bottom of the mounting plate (1); The vertical rotating shaft (3) is rotatably mounted at the bottom end of the horizontal rotating shaft (2); The guide frame (4) is fixedly set at the bottom of the vertical rotating shaft (3). The guide frame (4) is connected to the horizontal rotating shaft (2) and the vertical rotating shaft (3), so that the guide frame (4) can swing around the horizontal rotating shaft (2) in the vertical plane and swing around the vertical rotating shaft (3) in the horizontal plane. Several guide seats (9) are fixedly installed at the bottom of the guide frame (4) to constrain the cable.

2. The cable guiding device for a gantry crane according to claim 1, characterized in that: Also includes: The first positioning roller (10) is rotatably mounted inside the guide seat (9), and the first positioning roller (10) is located near the bottom end; The adjusting frame (11) is slidably disposed inside the guide seat (9), and the adjusting frame (11) is rotatably disposed inside the second positioning roller (12). Adjusting bolt (13) is threaded on guide frame (4). The bottom end of the adjusting bolt (13) is rotatably set with the top end of the adjusting frame (11). When the adjusting bolt (13) is rotated, the first positioning roller (10) and the second positioning roller (12) are close to or far apart.

3. The cable guiding device for a gantry crane according to claim 2, characterized in that: Also includes: Positioning grooves (15) are formed on both sides of the inside of the guide seat (9); The positioning block (14) is fixedly installed on both sides of the adjusting frame (11), and the outer surface of the positioning block (14) is slidably installed inside the positioning groove (15).

4. The cable guiding device for a gantry crane according to claim 3, characterized in that: Also includes: The clearance groove (16) is provided at the bottom end of the adjustment frame (11); Both the first positioning roller (10) and the second positioning roller (12) have arc-shaped grooves on their surfaces to limit the cable.

5. The cable guiding device for a gantry crane according to claim 1, characterized in that: Also includes: A shaft block (5) is disposed between a horizontal rotating shaft (2) and a vertical rotating shaft (3), and a rotating groove (7) is provided on the side of the shaft block (5). The connecting bolt (6) is fixedly installed on the horizontal rotating shaft (2) and the vertical rotating shaft (3), with one end of the connecting bolt (6) rotatably installed inside the rotating groove (7).

6. The cable guiding device for a gantry crane according to claim 5, characterized in that: Also includes: The protective sleeve (8) is inserted into the rotating groove (7), and the connecting bolt (6) is located inside the protective sleeve (8).

7. The cable guiding device for a gantry crane according to claim 1, characterized in that: Also includes: The limiting block (17) is fixedly set at the bottom of the mounting plate (1) so that the rotation angle between the horizontal rotating shaft (2) and the vertical rotating shaft (3) is limited.

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