Single-winding-drum steel wire rope falling-preventing and swinging-limiting device

Abstract

The utility model relates to the technical field of hoisting mechanisms, in particular to a single-drum steel wire rope anti-dropping and swing-limiting device which comprises a trolley frame, a drum is mounted on the upper frame face of the trolley frame, a long-strip-shaped hole with the length direction in the axial direction of the drum is formed in the side, corresponding to the unwinding side of the drum, of the trolley frame, and mounting plates are fixed to the hole walls of the two ends of the lower portion of the long-strip-shaped hole. Two limiting rollers which are arranged side by side in the width direction of the long-strip-shaped hole in a spaced mode are rotationally installed between the two installation plates, two limiting plates corresponding to the two installation plates respectively are arranged between the two limiting rollers, and buffer springs are connected between the centers of the plate faces of the limiting plates and the corresponding installation plates. The two side edges of the limiting plate are arc-shaped edges corresponding to the roller surface of the limiting roller, and rotating rollers axially perpendicular to the limiting roller are erected at the upper end and the lower end of the limiting plate; the single-drum steel wire rope anti-falling and swing-limiting device not only can avoid friction of the steel wire rope, but also can limit swing and stabilize lifting.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a single-drum steel wire rope anti-slip and swing-limiting device. Background Art

[0002] At present, the structure of a small single-drum lifting mechanism is very simple. A motor and a drum are installed on the running trolley, and a hook or a grab is connected to the end of the drum wire rope to perform lifting operations. However, when the hoisting device, especially the grab, swings with the hoisted object, it is easy to cause the wire rope to slip out of the groove and the wire rope to rub against the trolley frame. The Chinese utility model patent with announcement number CN212581412U discloses a gantry crane wire rope drum anti-slip groove limit protection device, which can set a rope pressure rod next to the drum so that the wire rope can be retracted and released close to the drum, thereby avoiding the wire rope from getting out of the groove or jumping out of the groove. However, it does not solve the problem of the wire rope rubbing against the trolley frame, nor does it play a role in limiting the large swing of the wire rope. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses a single-drum wire rope anti-slip and swing-limiting device, which can not only avoid friction with the wire rope, but also limit swing and stabilize lifting.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A single-drum wire rope anti-slip and swing limiting device comprises a trolley frame on which the drum is mounted on an upper frame surface, the trolley frame is provided with an elongated hole along the axial direction of the drum in the length direction corresponding to the rope releasing side of the drum, mounting plates are fixed to the hole walls at both ends of the lower part of the elongated hole, two limiting rollers spaced and arranged side by side in the width direction of the elongated hole are rotatably mounted between the two mounting plates, two limiting plates corresponding to the two mounting plates are provided between the two limiting rollers, a buffer spring is connected between the center of the limiting plate surface and the corresponding mounting plate, both side edges of the limiting plate are arranged as arc-shaped edges corresponding to the roller surface of the limiting roller, and rotating rollers whose axial direction is perpendicular to the limiting roller are mounted on the upper and lower ends of the limiting plate.

[0006] Furthermore, both ends of the limiting roller are rotatably connected to a rotating shaft via double bearings, a plate surface of the mounting plate is provided with a clamping hole, and a clamping block adapted to fit the clamping hole is fixed to the outer end surface of the rotating shaft.

[0007] Furthermore, the mounting plate comprises an upper clamping plate and a lower clamping plate which are detachably fixedly connected by bolts, and the lower plate surface of the upper clamping plate and the upper plate surface of the lower clamping plate are respectively provided with a first notch and a second notch which can be combined to form a clamping hole.

[0008] Furthermore, two supports are symmetrically fixed on both sides of the end surface of the limiting plate, and the two ends of the rotating roller are rotatably mounted on the two supports.

[0009] Furthermore, a limit rod is inserted in the buffer spring, one end of the limit rod is connected to the limit plate, and the other end of the limit rod slides through the mounting plate.

[0010] Furthermore, the arc-shaped edge of the limiting plate is provided with a wear-resistant elastic pad.

[0011] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0012] The utility model discloses a single-drum wire rope anti-slip and swing limiting device, which installs two limit rollers on a trolley frame below the drum, so that the wire rope unwound by the drum can pass through the gap between the two limit rollers, which can not only limit the swing of the wire rope and reduce the swing amplitude of the grab bucket hoist, but also when the wire rope contacts the limit roller for lifting and lowering, the limit roller can roll with the movement, thereby not causing wear to the wire rope. Similarly, the limit plates at both ends and the installed rotating rollers can limit and frictionally protect the wire rope. Even if the grab below drives the wire rope to swing to one end, it can also be buffered and protected by the buffer spring, so that the crane can work more reliably and smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the implementation structure of the utility model;

[0014] Figure 2 is a schematic top view of the limiting roller installation structure;

[0015] Figure 3 is a schematic structural diagram of the limiting plate;

[0016] Figure 4 is a schematic diagram of the connection structure of the rotating shaft;

[0017] Figure 5 is a structural schematic diagram of the upper card plate;

[0018] Figure 6 It is a structural schematic diagram of the lower card plate.

[0019] In the figure: 1, reel; 2, trolley frame; 3, limit roller; 4, mounting plate; 401, lower clamping plate; 402, upper clamping plate; 5, limit rod; 6, rotating roller; 7, limit plate; 8, support; 9, buffer spring; 10, rotating shaft; 11, clamping block. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction:

[0021] Combined with Figure 1-6 The single-drum wire rope anti-slip and swing-limiting device has a trolley frame 2 on which the drum 1 is installed on the upper frame surface. The trolley frame 2 is provided with an elongated hole along the axial direction of the drum 1 in the length direction corresponding to the rope-releasing side of the drum 1, so that the wire rope can pass through the elongated hole easily. The hole walls at both ends of the lower part of the elongated hole are fixed with mounting plates 4. Two limiting rollers 3 spaced and arranged side by side in the width direction of the elongated hole are rotatably installed between the two mounting plates 4. The gap between the two limiting rollers 3 can just fit the wire rope passing through. According to needs, both ends of the limiting roller 3 are rotatably connected with a rotating shaft through double bearings. The shaft 10 ensures stable bearing and flexible rotation. The plate surface of the mounting plate 4 is provided with a card hole. The outer end surface of the rotating shaft 10 is fixed with a card block 11 adapted to the card hole, which is convenient for clamping and fixing the rotating shaft 10 on the mounting plate 4. In addition, the mounting plate 4 includes an upper card plate 402 and a lower card plate 401 that are detachably connected by bolts. The lower plate surface of the upper card plate 402 and the upper plate surface of the lower card plate 401 are respectively provided with a first notch and a second notch that can be combined to form a card hole. The upper card plate 402 is easy to disassemble and assemble, which can facilitate the installation and maintenance of the limiting roller 3.

[0022] Two limit plates 7 corresponding to the two mounting plates 4 are provided between the two limit rollers 3, and a buffer spring 9 is connected between the center of the limit plate 7 and the corresponding mounting plate 4. When the wire rope swings toward the end of the limit roller 3 and suddenly hits the limit plate 7, the buffer spring 9 can play a buffering effect; according to needs, a limit rod 5 is inserted in the buffer spring 9, one end of the limit rod 5 is connected to the limit plate 7, and the other end of the limit rod 5 slides through the mounting plate 4, and the limit rod 5 is used to limit and support the limit plate 7 to prevent the limit plate 7 from being stuck between the two limit rollers 3; both side edges of the limit plate 7 are set to correspond to the roller surface of the limit roller 3 The arc-shaped edge of the limit plate 7 tries not to contact the limit roller 3 and affect its rotation, while expanding the area of ​​the wire rope that is supported and contacted, thereby achieving a better protective effect; in addition, the arc-shaped edge of the limit plate 7 is provided with a wear-resistant elastic pad to prevent accidental wear of the limit roller 3; the upper and lower ends of the limit plate 7 are both mounted with rotating rollers 6 whose axes are perpendicular to the limit roller 3. Specifically, two supports 8 are symmetrically fixed on both sides of the end face of the limit plate 7, and the two ends of the rotating roller 6 are rotatably mounted on the two supports 8. The roller surface of the rotating roller 6 needs to protrude from the inner plate surface of the corresponding limit plate 7 so that the wire rope can first contact the rotating roller 6 to avoid friction with the wire rope.

[0023] The single-drum wire rope anti-slip and swing limiting device described in the utility model is implemented, and the wire rope of the drum 1 is passed through the gap between the two limiting rollers 3 below and the gap between the two limiting plates 7 for hoisting. During the lifting process, the swing amplitude of the hoisted object can be reduced, and even if it swings, the wire rope can contact the rolling limiting roller 3 and the rotating roller 6 to avoid wear.

[0024] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A single-drum wire rope anti-slip and swing-limiting device, characterized by: A trolley frame (2) is provided on the upper surface of which a winding drum (1) is mounted. The trolley frame (2) is provided with a long hole in the longitudinal direction along the axial direction of the winding drum (1) corresponding to the rope releasing side of the winding drum (1). Both end holes of the lower part of the long hole are fixed with mounting plates (4). Two limiting rollers (3) are rotatably mounted between the two mounting plates (4) and are arranged side by side along the width direction of the long hole. Two limiting plates (7) corresponding to the two mounting plates (4) are provided between the two limiting rollers (3). A buffer spring (9) is connected between the center of the limiting plate (7) and the corresponding mounting plate (4). Both side edges of the limiting plate (7) are arranged as arc edges corresponding to the roller surface of the limiting roller (3). Rotating rollers (6) whose axial direction is perpendicular to the limiting roller (3) are mounted on the upper and lower ends of the limiting plate (7).

2. The single-drum wire rope anti-slip and swing-limiting device according to claim 1 is characterized in that: Both ends of the limiting roller (3) are rotatably connected to a rotating shaft (10) via double bearings; a plate surface of the mounting plate (4) is provided with a clamping hole; and a clamping block (11) adapted to fit the clamping hole is fixed to the outer end surface of the rotating shaft (10).

3. The single-drum wire rope anti-slip and swing-limiting device according to claim 2 is characterized in that: The mounting plate (4) comprises an upper clamping plate (402) and a lower clamping plate (401) which are detachably fixedly connected by bolts, and the lower plate surface of the upper clamping plate (402) and the upper plate surface of the lower clamping plate (401) are respectively provided with a first notch and a second notch which can be combined to form a clamping hole.

4. The single-drum wire rope anti-slip and swing-limiting device according to claim 1 is characterized in that: Two supports (8) are symmetrically fixed on both sides of the end surface of the limit plate (7), and the two ends of the rotating roller (6) are rotatably mounted on the two supports (8).

5. The single-drum wire rope anti-slip and swing-limiting device according to claim 1 is characterized in that: A limit rod (5) is inserted into the buffer spring (9), one end of the limit rod (5) is connected to the limit plate (7), and the other end of the limit rod (5) slides through the mounting plate (4).

6. The single-drum wire rope anti-slip and swing-limiting device according to claim 1 is characterized in that: The arc-shaped edge of the limiting plate (7) is provided with a wear-resistant elastic pad.

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