Mechanical device for preventing single-drum steel wire rope of crane from disengaging from groove

Abstract

The utility model discloses a mechanical device for preventing a steel wire rope of a single winding drum of a crane from disengaging from a groove, which comprises a mounting frame and a roller, the mounting frame is positioned on one side of the single winding drum of the crane, and the roller is detachably and rotatably connected onto the mounting frame. The axis of the roller is parallel to the axis of the single winding drum and flush with the wire outlet end of a steel wire rope on the single winding drum, and the distance between the roller and the steel wire rope is smaller than the depth of a rope groove in the single winding drum. The installation frame and the roller are arranged on one side of the single winding drum, the wire outlet end of the steel wire rope is limited through the roller, and the steel wire rope can be prevented from disengaging from a groove; the whole device is light in structure and convenient to install; by utilizing the rolling friction principle of the roller, the hidden danger of rope clamping in the construction process of the steel wire rope is avoided; a synchronous electrical structure is saved, and potential safety hazards of electrical faults are eliminated; therefore, the practical use requirements of lightness, low cost and reliability are met.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a mechanical device for preventing a single-drum wire rope of a crane from derailing. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It mainly includes a hoisting mechanism, traveling mechanism, luffing mechanism, slewing mechanism, and metal structure. The hoisting mechanism is the basic working mechanism of a crane, mostly composed of a sling system and a winch; the hoisting mechanism typically includes a motor, brake, reducer, drum, and pulley block. The motor, through the reducer, drives the drum to rotate, causing the wire rope to wind onto or unwind from the drum, thus raising or lowering the heavy object. Figure 1 As shown, a single drum is mounted on a support platform, and the wire rope is wound in the rope groove of the single drum and passes through the platform's cable groove before connecting to the hoisting system. Under the combined effects of swaying and crane vibration, the wire rope of the hoisting mechanism is prone to detaching from the single drum's rope groove, causing equipment damage or even safety accidents. To solve this problem, there are currently two main methods: one is to use an integrated protective cover, and the other is to use a rope guide. Traditional integrated protective covers are bulky and inconvenient for equipment installation and maintenance; rope guides, which offer better protection, are expensive and require additional synchronization control structures, leading to a higher failure rate. Therefore, a lightweight, low-cost, and reliable anti-detachment device needs to be designed. Utility Model Content

[0003] This utility model provides a mechanical device to prevent the single-drum wire rope of a crane from derailing, in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A mechanical device for preventing the wire rope of a crane single drum from derailing includes a mounting frame and a drum. The mounting frame is located on one side of the crane single drum, and the drum is detachably rotatably connected to the mounting frame. The axis of the drum is parallel to the axis of the single drum and the axis of the drum is flush with the exit end of the wire rope on the single drum. The distance between the drum and the wire rope is less than the depth of the rope groove on the single drum.

[0006] Preferably, the distance between the drum and the wire rope is 5mm.

[0007] Preferably, the roller includes a baffle shaft and a baffle, with both ends of the baffle shaft extending out of the baffle and then mounted on the mounting bracket. The baffle is made of wear-resistant material.

[0008] Preferably, the mounting frame includes a crossbeam with two first support plates. The first support plates have arc-shaped notches and a shaft end baffle is detachably connected to the first support plates. The shaft end baffle confines the end of the baffle shaft within the arc-shaped notch.

[0009] Preferably, the end of the baffle shaft is provided with an annular groove, and the outer periphery of the baffle shaft is in close contact with the arc-shaped bottom of the arc-shaped notch; the shaft end baffle is arc-shaped and is inserted into the annular groove, and the shaft end baffle is located on the side of the first support plate away from the baffle and is fixed on the first support plate by screw connection.

[0010] Preferably, the first support plate is fixed on the side of the crossbeam facing the single drum, and the arc-shaped notch faces the single drum.

[0011] Preferably, two or more baffles are provided on the baffle shaft, a second support plate is provided on the crossbeam, a second support plate is provided between each of the two baffles, and an arc-shaped notch is also provided on the second support plate, with the outer periphery of the baffle shaft closely attached to the arc-shaped bottom of the arc-shaped notch on the second support plate.

[0012] Preferably, the mounting frame includes a crossbeam, columns, and a base. The base is used to install on the support platform of the crane and is located on the side of the platform cable tray away from the single drum. There are at least two columns, and one end of each column is detachably connected to the base, while the other end of the two columns supports the crossbeam.

[0013] Preferably, a column connecting plate is fixedly provided at the end of the column away from the base. A set of connecting through holes is provided on the column connecting plate, and a set of first elongated holes corresponding to the connecting through holes are provided on the crossbeam. The length direction of the first elongated holes is set along the length direction of the crossbeam. The column connecting plate is detachably and fixedly connected to the crossbeam through a set of connecting through holes, a set of first elongated holes, and a set of first fasteners.

[0014] Preferably, a set of second elongated holes is provided at the end of the column away from the crossbeam, and the length direction of the second elongated holes is set along the length direction of the column; a set of third elongated holes corresponding to the second elongated holes is provided on the base, and the length direction of the third elongated holes is set perpendicular to the length direction of the second elongated holes; the column is detachably and fixedly connected to the base through a set of second elongated holes, a set of third elongated holes, and a set of second fasteners.

[0015] Beneficial effects:

[0016] This application discloses a mechanical device for preventing single-drum wire rope from derailing on a crane. By setting an installation frame and a roller on one side of the single drum, the roller limits the exit end of the wire rope, thus preventing the wire rope from derailing. The entire device is lightweight and easy to install. It utilizes the rolling friction principle of the roller to avoid the risk of the wire rope getting caught during construction. Furthermore, it saves on synchronous electrical structures and eliminates the safety risks of electrical faults. Thus, it meets the practical needs of being lightweight, low-cost, and reliable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the installation of a single drum and wire rope for an existing crane.

[0019] Figure 2 This is an installation diagram of a mechanical device for preventing a single-drum wire rope from derailing on a crane, as disclosed in this utility model.

[0020] Figure 3 This is an installation side view of a mechanical device for preventing a single-drum wire rope from derailing on a crane, as disclosed in this utility model.

[0021] Figure 4 This utility model discloses a structural schematic diagram of a mechanical device for preventing single-drum wire rope from derailing in a crane. Figure 1 ;

[0022] Figure 5 This utility model discloses a structural schematic diagram of a mechanical device for preventing single-drum wire rope from derailing in a crane. Figure 2 ;

[0023] Figure 6 This is a top view of a mechanical device for preventing a single-drum wire rope from derailing on a crane, as disclosed in this utility model.

[0024] Figure 7 for Figure 6 Enlarged view of a section of section II;

[0025] Figure 8 for Figure 4 A magnified view of a section of section I;

[0026] Figure 9 This is a schematic diagram of the structure of the crossbeam and the first support plate assembly of a mechanical device for preventing single-drum wire rope derailment of a crane disclosed in this utility model;

[0027] Figure 10 This is a partial schematic diagram of the retaining shaft of a mechanical device for preventing single-drum wire rope from derailing in a crane, as disclosed in this utility model.

[0028] Figure 11 This is a schematic diagram of the structure of the shaft end baffle of a mechanical device for preventing single-drum wire rope of a crane from derailing, as disclosed in this utility model.

[0029] In the diagram: 11. Single drum; 12. Support platform; 121. Platform trough; 13. Wire rope; 2. Mounting frame; 21. Crossbeam; 211. First support plate; 212. Arc-shaped notch; 213. Shaft end baffle; 214. Second support plate; 215. First elongated hole; 22. Column; 221. Column connecting plate; 223. Second elongated hole; 23. Base; 231. Third elongated hole; 3. Roller; 31. Baffle shaft; 311. Annular groove; 32. Baffle; 4. First fastener; 5. Second fastener. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] A mechanical device for preventing single-drum wire rope of a crane from derailing, combined with Figures 1-11 As shown, the device includes a mounting frame 2 and a drum 3. The mounting frame 2 is located on one side of the single drum 11 of the crane. The drum 3 is detachably rotatably connected to the mounting frame 2. The axis of the drum 3 is parallel to the axis of the single drum 11, and the axis of the drum 3 is flush with the outlet end of the wire rope 13 on the single drum 11. The distance between the drum 3 and the wire rope 13 is less than the depth of the rope groove on the single drum 11. This application, by setting the mounting frame 2 and the drum 3 on one side of the single drum 11, and by limiting the outlet end of the wire rope 13 by the drum 3, can prevent the wire rope 13 from derailing. The entire device has a lightweight structure and is easy to install. By utilizing the rolling friction principle of the drum 3, the potential danger of the wire rope 13 getting caught during construction is avoided. Furthermore, it saves on synchronous electrical structures and eliminates the safety risks of electrical faults. Thus, it meets the practical needs of being lightweight, low-cost, and reliable.

[0032] Preferably, the distance between the roller 3 and the wire rope 13 is 5mm. Through actual use and debugging, it has been found that controlling the distance between the outer circumference of the roller 3 and the surface of the wire rope 13 to 5mm can prevent the wire rope 13 from derailing and getting stuck, and can also prevent the roller 3 and the wire rope 13 from rubbing too violently and failing quickly.

[0033] Preferably, the roller 3 includes a stop shaft 31 and a stop cylinder 32. The two ends of the stop shaft 31 extend through the stop cylinder 32 and are mounted on the mounting bracket 2. The stop cylinder 32 is made of a wear-resistant material. The stop cylinder 32 moves with the wire rope 13 through rolling friction around the stop shaft 31, thereby blocking the wire rope 13 and limiting its movement towards the exit groove. In this embodiment, the stop cylinder 32 can be made of nylon tubing, which is convenient to purchase and replace.

[0034] Preferably, the mounting frame 2 includes a crossbeam 21, on which two first support plates 211 are provided. Each first support plate 211 has an arc-shaped notch 212. A shaft end baffle 213 is detachably connected to each first support plate 211, and the shaft end baffle 213 confines the end of the baffle shaft 31 within the arc-shaped notch 212. The baffle shaft 31 can be easily installed and removed through the cooperation of the shaft end baffle 213 and the first support plates 211.

[0035] Preferably, the end of the baffle shaft 31 is provided with an annular groove 311, and the outer periphery of the baffle shaft 31 is in close contact with the arc-shaped bottom of the arc-shaped notch 212; the shaft end baffle 213 is arc-shaped and is inserted into the annular groove 311, and the shaft end baffle 213 is located on the side of the first support plate 211 away from the baffle 32 and is fixed to the first support plate 211 by screws. The structure of this application can both press the baffle shaft 31 and limit the axial position of the baffle shaft 31.

[0036] Preferably, the first support plate 211 is welded to the side of the crossbeam 21 facing the single drum 11, and the arc-shaped notch 212 faces the single drum 11, so that the reaction force of the wire rope 13 on the drum 3 passes through the axis of the drum 3 and the fulcrum of the first support plate 211, which can effectively improve the service life of the first support plate 211 and the baffle shaft 31.

[0037] Preferably, two or more baffles 32 are threaded onto the baffle shaft 31, and a second support plate 214 is provided on the crossbeam 21. A second support plate 214 is provided between each of the two baffles 32. The second support plate 214 also has an arc-shaped notch 212, and the outer periphery of the baffle shaft 31 is in close contact with the arc-shaped bottom of the arc-shaped notch 212 on the second support plate 214. Adding the second support plate 214 for support can increase the length of the baffle shaft 31, so as to install more baffles 32, which can be applied to scenarios where two or more sets of wire ropes 13 are wound on a single drum 11.

[0038] Preferably, the mounting frame 2 includes a crossbeam 21, columns 22, and a base 23. The base 23 is used for mounting on the support platform 12 of the crane, and is located on the side of the platform cable tray 121 of the support platform 12 away from the single drum 11. There are at least two columns 22, one end of which is detachably connected to the base 23, and the other end of which supports the crossbeam 21. In this embodiment, the crossbeam 21 and the columns 22 are made of channel steel, and the base 23 includes a base plate and two vertical plates welded to the base plate. The base plate is fixed to the support platform 12 by welding. The mounting frame 2 of this application has a lightweight structure and is convenient for installation and disassembly.

[0039] Preferably, a column connecting plate 221 is fixedly provided at the end of the column 22 away from the base 23. A set of connecting through holes is provided on the column connecting plate 221, and a set of first elongated holes 215 corresponding to the connecting through holes are provided on the crossbeam 21. The length direction of the first elongated holes 215 is set along the length direction of the crossbeam 21. The column connecting plate 221 is detachably and fixedly connected to the crossbeam 21 through a set of connecting through holes, a set of first elongated holes 215, and a set of first fasteners 4. Through the cooperation of the first elongated holes 215 and the first fasteners 4, the position of the crossbeam 21 relative to the column 22 can be adjusted to facilitate adjustment of the position of the crossbeam 21 relative to the single drum 11 during installation, ensuring that the position of the roller 3 relative to the single drum 11 is centered. In this embodiment, three columns 22 are provided below the crossbeam 21, and each column is connected to the crossbeam 21 in the above manner.

[0040] Specifically, there are four connecting through holes in a rectangular arrangement, and eight first elongated holes 215 in a set. The four connecting through holes can be selected from four of the corresponding first elongated holes 215 as needed to facilitate larger position adjustments of the crossbeam 21, and then smaller adjustments can be made through the first elongated holes 215 to achieve a satisfactory position.

[0041] Preferably, the end of the column 22 away from the crossbeam 21 is provided with a set of second elongated holes 223, the length direction of the second elongated holes 223 is set along the length direction of the column 22; the base 23 is provided with a set of third elongated holes 231 corresponding to the second elongated holes 223, the length direction of the third elongated holes 231 is set perpendicular to the length direction of the second elongated holes 223; the column 22 is detachably and fixedly connected to the base 23 through a set of second elongated holes 223, a set of third elongated holes 231 and a set of second fasteners 5, thereby realizing the adjustment of the distance between the column 22 and the single drum 11, as well as the height of the column 22.

[0042] This application uses an elongated hole on the mounting bracket 2 for adjustment, ensuring that the roller 3 and the wire rope 13 are flush, that is, that the axis of the roller 3, the axis of the single drum 11, and the tangent point of the wire rope 13 extension end and the single drum 11 are in the same plane; it also facilitates ensuring the distance between the roller 3 and the wire rope 13.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mechanical device for preventing single-drum wire rope of a crane from derailing, characterized in that, The system includes a mounting frame (2) and a roller (3). The mounting frame (2) is located on one side of the single drum (11) of the crane. The roller (3) is detachably rotatably connected to the mounting frame (2). The axis of the roller (3) is parallel to the axis of the single drum (11) and the axis of the roller (3) is flush with the outlet end of the wire rope (13) on the single drum (11). The distance between the roller (3) and the wire rope (13) is less than the depth of the rope groove on the single drum (11). The mounting frame (2) includes a crossbeam (21), columns (22) and a base (23). The base (23) is used to install on the support platform (12) of the crane. The base (23) is located on the side of the platform cable groove (121) of the support platform (12) away from the single drum (11). There are at least two columns (22). One end of each of the two columns (22) can be detachably connected to the base (23), and the other end of the two columns (22) supports the crossbeam (21). The column (22) is fixedly provided with a column connecting plate (221) at one end away from the base (23). A set of connecting through holes is provided on the column connecting plate (221). A set of first elongated holes (215) corresponding to the connecting through holes are provided on the crossbeam (21). The length direction of the first elongated holes (215) is set along the length direction of the crossbeam (21). The column connecting plate (221) is detachably and fixedly connected to the crossbeam (21) through a set of connecting through holes, a set of first elongated holes (215), and a set of first fasteners (4). The column (22) has a set of second elongated holes (223) at one end away from the crossbeam (21), and the length direction of the second elongated holes (223) is set along the length direction of the column (22); the base (23) has a set of third elongated holes (231) corresponding to the second elongated holes (223), and the length direction of the third elongated holes (231) is set perpendicular to the length direction of the second elongated holes (223); the column (22) is detachably and fixedly connected to the base (23) through a set of second elongated holes (223), a set of third elongated holes (231), and a set of second fasteners (5).

2. The mechanical device for preventing single-drum wire rope derailment of a crane according to claim 1, characterized in that, The distance between the roller (3) and the wire rope (13) is 5mm.

3. The mechanical device for preventing single-drum wire rope derailment of a crane according to claim 1, characterized in that, The roller (3) includes a baffle shaft (31) and a baffle (32). The baffle shaft (31) extends through the baffle (32) at both ends and is mounted on the mounting bracket (2). The baffle (32) is made of wear-resistant material.

4. The mechanical device for preventing single-drum wire rope derailment of a crane according to claim 3, characterized in that, The mounting bracket (2) includes a crossbeam (21), on which two first support plates (211) are provided. An arc-shaped notch (212) is provided on the first support plate (211). A shaft end baffle (213) is detachably connected to the first support plate (211). The shaft end baffle (213) confines the end of the baffle shaft (31) within the arc-shaped notch (212).

5. The mechanical device for preventing single-drum wire rope derailment of a crane according to claim 4, characterized in that, The end of the baffle shaft (31) is provided with an annular groove (311), and the outer periphery of the baffle shaft (31) is closely attached to the arc bottom of the arc notch (212); the shaft end baffle (213) is arc-shaped and is inserted into the annular groove (311). The shaft end baffle (213) is located on the side of the first support plate (211) away from the baffle (32) and is fixed on the first support plate (211) by screws.

6. The mechanical device for preventing single-drum wire rope derailment of a crane according to claim 5, characterized in that, The first support plate (211) is fixed on the side of the crossbeam (21) facing the single drum (11), and the arc-shaped notch (212) faces the single drum (11).

7. The mechanical device for preventing single-drum wire rope derailment of a crane according to claim 5, characterized in that, Two or more baffles (32) are provided on the baffle shaft (31), and a second support plate (214) is provided on the crossbeam (21). A second support plate (214) is provided between each of the two baffles (32). An arc-shaped notch (212) is also provided on the second support plate (214). The outer periphery of the baffle shaft (31) is closely attached to the arc-shaped bottom of the arc-shaped notch (212) on the second support plate (214).

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