Crane cable rope speed limiting device

Abstract

The utility model discloses a crane cable rope speed limiting device which comprises a support, a cable rope stranding roller is connected to the side face of the support in a rotating and clamping mode, an inner speed limiting disc is fixedly connected to one side of the cable rope stranding roller, a driving motor is connected to the other side of the cable rope stranding roller in a rotating mode, an outer speed limiting disc is fixedly connected to the outer side of the inner speed limiting disc in a clamping mode, and a bottom frame is fixedly arranged at one end of the upper portion of the support. A speed limiting ring is fixedly arranged above the bottom frame, a dustproof cover is fixedly arranged on the outer side of the speed limiting ring, and a speed limiter is fixedly arranged on the inner side of the speed limiting ring. Through the arrangement of the multiple sets of speed limiters, each set comprises the first control device with the intelligent response function, the flexible telescopic push rod and the tightly-attached arc-shaped speed limiting plate, the speed limiting accuracy and sensitivity are greatly improved through the combination, and when speed limiting is needed, the first control devices can make a quick response and drive the telescopic push rods to stretch out; the arc-shaped speed limiting plate is tightly attached to the outer side of the outer speed limiting disc, the rotating speed is reduced through efficient friction force, and therefore the releasing speed of the cable is precisely limited.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable speed limiting equipment technical field, specifically a kind of crane cable speed limiting device. BACKGROUND

[0002] The cable speed limiting device of crane is widely used in various need hoisting, transportation and unloading operation occasions, such as construction site, port terminal, factory workshop etc., especially in cable crane, because the number of pulley is more, cooperation is complex, so the importance of speed limiting device is more highlighted;

[0003] Some existing speed limiting devices for crane cable can lack emergency braking function, once crane appears abnormal condition, such as cable overspeed or out of control, need to immediately carry out emergency braking, if the response speed of speed limiting device is not fast enough, cable cannot be prevented from continuing to release quickly and effectively.This delay can lead to the increase of accident risk, especially under high-speed operation or heavy load working condition. SUMMARY

[0004] The utility model aims at: in order to solve the problem mentioned in the above background, provide a kind of crane cable speed limiting device.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of crane cable speed limiting device, comprising: support, the support side rotation clamping has cable stranding roller, one side of the cable stranding roller is fixedly connected with inner speed limiting disc, the other side of the cable stranding roller is rotatably connected with driving motor, the outer side of the inner speed limiting disc is fixedly clamped with outer speed limiting disc, the support top is fixedly set with chassis, the speed limiting ring is fixedly set in the top of the chassis, the dust cover is fixedly set on the outer side of the speed limiting ring, the speed limiter is fixedly set in the inner side of the speed limiting ring.

[0006] As the further scheme of the utility model: the speed limiter includes the first control device fixedly set in the inner side of the speed limiting ring, the first control device side is fixedly connected with telescopic push rod, the telescopic push rod side is fixedly connected with arc speed limiting plate;

[0007] The inner side of the inner speed limiting disc is provided with inner groove, the inner side of the inner groove is fixedly provided with speed limiting buckle, the outer side of the inner speed limiting disc is fixedly provided with second control device.

[0008] As the further scheme of the utility model: the second control device side is fixedly connected with connecting rod, the surface of the connecting rod is fixedly provided with safety hook device, the safety hook device includes the driving element fixedly set in the surface of the connecting rod, the driving element side is fixedly connected with hydraulic telescopic rod, the hydraulic telescopic rod side is fixedly connected with hook.

[0009] As a further scheme of the utility model: the outer speed limiting disc and the inner speed limiting disc are located inside the speed limiting ring, the speed limiting ring is fixedly provided with the dustproof cover on both sides, the number of speed limiter is provided with multiple groups, multiple groups of speed limiter are fixedly arranged on the inner wall surface of the speed limiting ring, the cable twisting roller is driven by the driving motor, and the cable twisting roller drives the inner speed limiting disc and the outer speed limiting disc to rotate synchronously.

[0010] As a further scheme of the utility model: the arc-shaped speed limiting plate is fixedly provided with wear-resistant pieces on the bottom surface, the size of the wear-resistant pieces is matched with the size of the arc-shaped speed limiting plate, and the arc-shaped speed limiting plate is driven by the first control device to drive the telescopic push rod, so that the arc-shaped speed limiting plate is located outside the outer speed limiting disc.

[0011] As a further scheme of the utility model: the connecting rod and the safety hook device are located inside the inner groove, the size of the speed limiting buckle is matched with the size of the hook, the number of safety hook devices is provided with multiple groups, multiple groups of safety hook devices are fixedly arranged on the surface of the connecting rod, the driving part drives the hydraulic telescopic rod to drive the hook to move telescopically, the hook can be clamped on the speed limiting buckle through telescopic movement, and the rotation of the inner speed limiting disc is prevented.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] In the utility model, multiple groups of speed limiter are arranged, each group comprises the first control device, the telescopic push rod and the arc-shaped speed limiting plate, the combination greatly enhances the accuracy and sensitivity of speed limiting, when speed limiting is needed, the first control device can respond quickly, drives the telescopic push rod to extend, makes the arc-shaped speed limiting plate closely adhere to the outside of the outer speed limiting disc, slows down the rotating speed through high efficient friction, thereby accurately limiting the releasing speed of the cable, the wear-resistant pieces are added, the durability of the arc-shaped speed limiting plate is further improved, the service life of the speed limiter is prolonged, and the speed limiting effect is also enhanced.

[0014] The inner groove in the inner side of the inner speed limiting disc is ingeniously provided with the speed limiting buckle, the safety hook device connected with the second control device through the connecting rod cooperates with each other, forms an emergency braking mechanism, when emergency braking is needed, the second control device can be started immediately, drives the hydraulic telescopic rod to extend, drives the hook to accurately clamp the speed limiting buckle, realizes instantaneous braking, and effectively avoids the safety hidden danger possibly caused by the overspeed or out-of-control of the cable. ACCURACY

[0015] Figure 1 It is the whole structure schematic view of the crane cable speed limiting device.

[0016] Figure 2Is the structure diagram of the cable line roller connection in the crane cable speed limiting device of the utility model;

[0017] Figure 3 Is the structure diagram of the inside of the speed limiting ring in the crane cable speed limiting device of the utility model;

[0018] Figure 4 Is the structure diagram of the speed limiter in the crane cable speed limiting device of the utility model;

[0019] Figure 5 Is the structure diagram of the inside of the inner speed limiting disc in the crane cable speed limiting device of the utility model;

[0020] Figure 6 Is the structure diagram of the safety hook device in the crane cable speed limiting device of the utility model.

[0021] In the figure: 1, support; 2, cable line roller; 3, inner speed limiting disc; 4, outer speed limiting disc; 5, base frame; 6, speed limiting ring; 7, dust cover; 8, speed limiter; 9, inner groove; 10, speed limiting buckle; 11, second control device; 12, connecting rod; 13, safety hook device; 14, driving motor; 81, first control device; 82, telescopic push rod; 83, arc-shaped speed limiting plate; 131, driving part; 132, hydraulic telescopic rod; 133, hook. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] In the description of the utility model, it is necessary to explain that the orientation or positional relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or positional relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the utility model.

[0024] Referring to Figures 1 to 6 In the utility model embodiment, a kind of crane cable speed limiter, it include: support 1, support 1 side rotation card then cable twisting roller 2, cable can be wound on cable twisting roller 2, one side of cable twisting roller 2 is fixedly connected with inner speed limiter 3, and the other side is rotated by drive motor 14 drive, inner speed limiter 3 outside is fixedly clamped with outer speed limiter 4, both synchronous rotation, support 1 top is fixed with chassis 5, and chassis 5 top is fixedly arranged with speed limiter ring 6, speed limiter 8 is arranged in the inner side of speed limiter ring 6, for realizing speed limiting function, dust cover 7 is also fixedly arranged on the outer side of speed limiter ring 6, to protect internal components from dust and debris.

[0025] Speed limiter 8 is composed of first control device 81, telescopic push rod 82 and arc speed limiting plate 83, when needing speed limiting, first control device 81 will start, drive telescopic push rod 82 to extend, so that arc speed limiting plate 83 is tightly attached to the outer side of outer speed limiter 4, wear-resistant sheet is arranged on the bottom surface of arc speed limiting plate 83, which enhances its durability and speed limiting effect, by friction, arc speed limiting plate 83 can slow down the rotating speed of outer speed limiter 4, and then limit the release speed of cable.

[0026] The second control device 11 is connected with the safety hook device 13 through the connecting rod 12, the safety hook device 13 comprises a driving member 131, a hydraulic telescopic rod 132 and a hook 133, when emergency braking is needed, the second control device 11 starts the driving member 131, drives the hydraulic telescopic rod 132 to extend, and drives the hook 133 to clamp the speed limiting buckle 10 in the inner groove 9 on the inner side of the inner speed limiting disc 3, since the speed limiting buckle 10 is matched with the hook 133 in size, the hook 133 can firmly hook the speed limiting buckle 10, thereby preventing the inner speed limiting disc 3 from continuing to rotate, and the emergency braking function is realized.

[0027] The working principle of the utility model is:

[0028] The device is fixedly installed through the support 1, the cable twisting roller 2 is rotatably clamped on the side of the support 1, the cable can be wound on the cable twisting roller 2, the cable twisting roller 2 is fixedly connected with the inner speed limiting disc 3 on one side, and is driven to rotate through the driving motor 14 on the other side, so as to drive the inner speed limiting disc 3 and the outer speed limiting disc 4 to synchronously rotate, the outer speed limiting disc 4 and the inner speed limiting disc 3 are located on the inner side of the speed limiting ring 6, a plurality of speed limiters 8 are fixedly arranged on the inner side of the speed limiting ring 6, each speed limiter 8 comprises a first control device 81, a telescopic push rod 82 and an arc-shaped speed limiting plate 83, when speed limiting is needed, the first control device 81 drives the telescopic push rod 82 to extend, so that the arc-shaped speed limiting plate 83 is in contact with and tightly attached to the outer side of the outer speed limiting disc 4, the rotating speed of the outer speed limiting disc 4 is slowed down through friction force, and then the releasing speed of the cable is limited, and the wear-resistant sheet arranged on the bottom surface of the arc-shaped speed limiting plate 83 enhances the durability and speed limiting effect of the arc-shaped speed limiting plate 83;

[0029] Meanwhile, the speed limiting buckle 10 is arranged in the inner groove 9 arranged on the inner side of the inner speed limiting disc 3, the second control device 11 is fixedly arranged on the outer side of the inner speed limiting disc 3, the second control device 11 is connected with the safety hook device 13 through the connecting rod 12, the safety hook device 13 comprises the driving member 131, the hydraulic telescopic rod 132 and the hook 133, when emergency braking is needed, the second control device 11 drives the hydraulic telescopic rod 132 to extend through the driving member 131, drives the hook 133 to clamp the speed limiting buckle 10, since the speed limiting buckle 10 is matched with the hook 133 in size, the hook 133 can firmly hook the speed limiting buckle 10, thereby preventing the inner speed limiting disc 3 from continuing to rotate, and the emergency braking function is realized;

[0030] In addition, the dust cover 7 is fixedly arranged on the outer side of the speed limiting ring 6, dust and sundries can be effectively prevented from entering the inside of the speed limiting device, and the normal operation of the speed limiter 8 and other components is protected.

[0031] The above describes only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A crane cable speed limiter device, characterized by, Include: Support (1), the support (1) side rotation clamping cable twisting roller (2), one side of the cable twisting roller (2) is fixedly connected with inner speed limiting disc (3), the other side of the cable twisting roller (2) is rotatably connected with drive motor (14), the outer side of the inner speed limiting disc (3) is fixedly clamped with outer speed limiting disc (4), the upper end of the support (1) is fixedly provided with chassis (5), the upper side of the chassis (5) is fixedly provided with speed limiting ring (6), the outer side of the speed limiting ring (6) is fixedly provided with dust cover (7), the inner side of the speed limiting ring (6) is fixedly provided with speed limiter (8).

2. A crane cable speed limiter as claimed in claim 1, characterised in that, The speed limiter (8) includes a first control device (81) fixedly arranged on the inner side of the speed limiting ring (6), the first control device (81) is fixedly connected with a telescopic push rod (82) on the side, and the telescopic push rod (82) is fixedly connected with an arc-shaped speed limiting plate (83) on the side. The inner side of the inner speed limiting disc (3) is provided with an inner groove (9), and the inner side of the inner groove (9) is fixedly provided with a speed limiting buckle (10), and the outer side of the inner speed limiting disc (3) is fixedly provided with a second control device (11).

3. A crane cable speed limiter according to claim 2, characterised in that, The second control device (11) is fixedly connected with a connecting rod (12) on the side, and the connecting rod (12) is fixedly provided with a safety hook device (13) on the surface, the safety hook device (13) includes a driving member (131) fixedly arranged on the surface of the connecting rod (12), the driving member (131) is fixedly connected with a hydraulic telescopic rod (132) on the side, and the hydraulic telescopic rod (132) is fixedly connected with a hook (133) on the side.

4. A crane cable speed limiter as claimed in claim 1, characterised in that, The outer speed limiting disc (4) and the inner speed limiting disc (3) are located on the inner side of the speed limiting ring (6), the outer side of the speed limiting ring (6) is fixedly provided with the dust cover (7) on both sides, a plurality of groups of the speed limiter (8) are arranged, and a plurality of groups of the speed limiter (8) are fixedly arranged on the inner wall surface of the speed limiting ring (6), the cable twisting roller (2) is driven by the drive motor (14), and the cable twisting roller (2) drives the inner speed limiting disc (3) and the outer speed limiting disc (4) to rotate synchronously.

5. A crane cable speed limiter as claimed in claim 2, characterised in that, The bottom surface of the arc-shaped speed limiting plate (83) is fixedly provided with a wear-resistant sheet, the size of the wear-resistant sheet matches the size of the arc-shaped speed limiting plate (83), the arc-shaped speed limiting plate (83) drives the telescopic push rod (82) through the first control device (81), so that the arc-shaped speed limiting plate (83) is located on the outer side of the outer speed limiting disc (4).

6. A crane cable speed limiter as claimed in claim 3, characterised in that, The connecting rod (12) and the safety hook device (13) are located in the inner groove (9), the size of the speed limiting buckle (10) matches the size of the hook (133), a plurality of groups of the safety hook device (13) are arranged, a plurality of groups of the safety hook device (13) are fixedly arranged on the surface of the connecting rod (12), the driving member (131) drives the hydraulic telescopic rod (132) to drive the hook (133) to move telescopically, the hook (133) can be clamped on the speed limiting buckle (10) through telescopic movement, and the rotation of the inner speed limiting disc (3) is prevented.

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