Protective device for steel wire rope of grab bucket crane

Abstract

The utility model relates to a grab crane steel wire rope protection device which comprises a baffle, solid round steel and a thickened steel plate. The thickened steel plates are symmetrically arranged left and right at certain intervals; solid round steel is fixedly connected between the front ends and the rear ends of the thickened steel plates on the two sides respectively; baffles are fixedly connected to the corresponding positions of the inner side of the solid round steel and the two sides of the end of the steel wire rope pulley. The grab bucket crane can effectively solve the problems of abrasion and groove separation of the steel wire rope, obviously reduces the abrasion and groove separation phenomena of the steel wire rope, and improves the working performance and the safety of the grab bucket crane.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting machinery technical field especially relates to a grab bucket hoist steel wire rope protection device. BACKGROUND

[0002] In industrial production, the grab bucket hoist is widely used in material loading and handling as an important hoisting equipment. However, in the actual operation process, due to the operation mode and equipment structure and other factors, the steel wire rope of the grab bucket hoist faces many challenges.

[0003] In the operation of grabbing blast furnace slag, the operator often quickly drops the grab bucket to increase the grabbing amount, and uses the weight of the grab bucket to hit the material surface. This operation causes the steel wire rope to bear a large impact force and friction force during the rapid falling process. The local single strand of the steel wire rope is frequently stuck in the joint, causing the surface of the steel wire rope to be severely worn. At the same time, the falling speed of the steel wire rope is extremely fast, and the bending impact when reaching the ground causes great damage to the original protection device for preventing the steel wire rope from falling out of the groove. The existing protection device is prone to deformation under long-term strong impact, causing the gap between the protection beam and the lower pulley to be too large, and the steel wire rope to fall out of the groove, which cannot effectively prevent the steel wire rope from falling out of the groove, further aggravating the wear and breakage of the steel wire rope, and affecting the operation efficiency and safety. Therefore, the existing protection device cannot effectively cope with the above-mentioned situation.

[0004] The original protection device for preventing the steel wire rope from falling out of the groove has defects in design and material selection. First of all, its structural strength is not enough to withstand the impact caused by the high-speed falling of the steel wire rope, and it is prone to deformation and damage. Secondly, the contact mode and material selection of the protection device and the steel wire rope are improper, which increases the wear risk of the steel wire rope. For example, the original protection device usually uses channel steel, which has a large contact area with the steel wire rope and relatively large friction, and is prone to wear the steel wire rope in the long-term use process. Moreover, the strength and rigidity of the channel steel are limited, and it is difficult to withstand the large impact force generated when the steel wire rope falls at high speed, and is prone to deformation and damage.

[0005] In summary, the existing grab bucket hoist steel wire rope protection device cannot meet the needs of actual production, seriously affecting the working efficiency and safety of the grab bucket hoist, directly increasing the equipment maintenance cost and production risk. SUMMARY

[0006] In view of the above problems, the purpose of the utility model is to provide a grab bucket hoist steel wire rope protection device, which can effectively solve the problems of steel wire rope wear and falling out of the groove, significantly reduce the wear and falling out of the groove of the steel wire rope, and improve the working performance and safety of the grab bucket hoist.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] The utility model provides a kind of grab bucket hoist wire rope protection device, including baffle, solid round steel and thickened steel plate;The thickened steel plate is symmetrically arranged at certain distance left and right;The front end and rear end of two sides thickened steel plate are respectively fixed with a solid round steel;The inside of solid round steel is fixed with baffle in the corresponding position of both sides of wire rope pulley end portion.

[0009] Further, the solid round steel end portion both sides and thickened steel plate are provided with reinforcing rib.

[0010] Further, the baffle both sides and solid round steel are provided with reinforcing rib.

[0011] Further, the baffle is made of high-strength, low-friction coefficient material.

[0012] Further, the baffle one end is opened with the corresponding circular arc slot of solid round steel, and is clamped and welded fixed with solid round steel through the circular arc slot.

[0013] Further, the material of solid round steel is high-strength, wear-resistant alloy steel

[0014] Compared with prior art, the utility model has the following beneficial effects:

[0015] 1, significantly prolong the service life of wire rope

[0016] The utility model can effectively reduce the wear and damage of wire rope in operation process. Baffle structure and material replacement and other measures significantly reduce the friction between wire rope and protection device, reduce the occurrence of local single strand joint phenomenon, and the reinforcing assembly reduces the impact load of wire rope, so that the service life of wire rope is greatly prolonged, and the equipment maintenance cost is reduced.

[0017] 2, improve operation safety

[0018] Preventing wire rope from falling off groove is the key to guarantee the safety of grab bucket hoist operation. The utility model optimizes structure and enhances strength, effectively avoids the occurrence of wire rope falling off groove accident, and significantly improves the safety of operation.

[0019] 3, enhance equipment reliability and stability

[0020] The improved and reinforced protection device has higher structural strength and stability, can long-term stable operation in harsh working environment. Reduce the equipment downtime and maintenance time caused by protection device failure, improve the operation efficiency of grab bucket hoist and the reliability of equipment.

[0021] 4, reduce maintenance cost

[0022] The service life of the steel wire rope is prolonged, and the failure rate of the protection device is reduced, thereby directly reducing the maintenance cost of the equipment.

[0023] 5. Wide applicability

[0024] The utility model discloses a reasonable design, compact structure, and is applicable to various models and specifications of grab hoist equipment. Whether it is the installation of new equipment or the upgrading of existing equipment, the device can be conveniently applied, and has wide market application prospects.

[0025] 6. Energy saving and environmental protection

[0026] Due to the reduced wear and tear of the steel wire rope and the protection device, the material consumption and waste generation are reduced, meeting the requirements of energy saving and environmental protection. At the same time, the operation efficiency and stability of the equipment are improved, which also helps to reduce energy consumption and contributes to the sustainable development of enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural diagram of the original grab hoist steel wire rope protection device;

[0028] Figure 2 is a structural diagram of the utility model;

[0029] Figure 3 is Figure 2 is a structural diagram of the middle baffle;

[0030] Figure 4 is a structural diagram of the connection between the baffle and the solid round steel.

[0031] Among them, the reference sign 1 is a baffle, 2 is a pulley, 3 is a channel steel, 4 is a steel plate, 5 is a solid round steel, 6 is a reinforcing rib, and 7 is a thickened steel plate. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0033] It should be noted that in the description of the utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not mean that the device or element must have a particular orientation, be constructed and operated in a particular orientation.

[0034] Referring to the accompanying drawings Figures 1-2 The utility model discloses a grab bucket hoist steel wire rope protection device, including baffle 1, solid round steel 5 and thick steel plate 7. Among them, two thick steel plates 7 are arranged symmetrically at a certain distance apart, and the front end of the two thick steel plates 7 is fixedly connected through a solid round steel 5, and the rear end of the two thick steel plates 7 is fixedly connected through another solid round steel 5, and the front and rear two solid round steels 5 are parallel to each other and spaced at a certain distance. The area between the two thick steel plates 7 and the two solid round steels 5 corresponds to the steel wire rope pulley 2 of the grab bucket hoist.

[0035] The inner side of the two solid round steels 5 is fixedly connected with the baffle 1 at the corresponding position of the left and right sides of the end of the steel wire rope pulley 2.

[0036] The baffle 1 is made of high-strength, low-friction coefficient alloy material, such as high manganese steel alloy, has excellent hardness and toughness, can withstand the great force brought by high-speed impact of steel wire rope, and can reduce the additional wear of steel wire rope. The surface of the baffle 1 is treated specially, such as quenching and chrome plating, to further improve the surface hardness and wear resistance.

[0037] Among them, one end of the baffle 1 is provided with a circular arc slot corresponding to the solid round steel 5, and the baffle 1 is clamped and welded with the solid round steel 5 through the circular arc slot. And the two sides of the baffle 1 and the solid round steel 5 are fixedly connected with the reinforcing rib 6.

[0038] The height and width dimensions of the baffle 1 are determined according to the model of the grab bucket hoist and the gap between the lower pulley 2, and the height and width of the baffle of different models of grab bucket hoist are different.

[0039] The two sides of the end of the solid round steel 5 and the thick steel plate 7 are fixedly connected with the reinforcing rib 6.

[0040] The above reinforcing measures can significantly improve the overall rigidity and strength of the protection device, so that it can remain stable when the steel wire rope falls and bends and hits at high speed, and is not easy to deform.

[0041] In order to reduce the wear and tear of the steel wire rope to the greatest extent, the utility model adopts solid round steel 5 instead of the original channel steel 3. The solid round steel 5 has a smooth surface, and the contact area with the steel wire rope is significantly reduced, thereby reducing the friction. In addition, the material of the solid round steel 5 is selected as high-strength and wear-resistant alloy steel, such as chromium molybdenum alloy steel, which has much higher strength and wear resistance than the original channel steel material. This replacement not only reduces the wear and tear of the steel wire rope, but also improves the durability of the protection device itself.

[0042] The working principle of the utility model is that the grab bucket crane is mainly composed of a crane main body and a grab bucket. During the descending process, the grab bucket jaw plate digs into the material under the action of the self weight of the grab bucket. Since the material surface is hard, the material is less dug. In order to dig more material, the operator often uses the grab bucket to fall quickly, and uses the weight of the grab bucket to hit the material surface. The curved and loose steel wire rope is easy to be out of the groove and worn out. Since the utility model adopts the solid round steel 5, the wear and tear of the steel wire rope is greatly avoided. Meanwhile, the arc-shaped baffle 1 is welded on the solid round steel at intervals. The baffle 1 is welded on both sides of the pulley, and the distance between the baffle 1 and the steel wire rope pulley is within 8 mm, so that the steel wire rope is not jammed and out of the groove when falling and bending.

[0043] Through practice comparison, the steel wire rope protection device with the original structure needs to replace the steel wire rope (φ28) every 15 days for each grab bucket crane, and needs to replace the steel wire rope 24 times every year for each grab bucket crane. Each replacement needs 180 meters of steel wire rope, and 2 grab bucket cranes need 8640 meters of steel wire rope every year. The procurement price of φ28 steel wire rope is about 90 yuan per meter, and the annual consumption cost of the steel wire rope is 77.76 million yuan. The replacement frequency of the utility model can be extended to 4 times per year, and 1440 meters of steel wire rope are needed. The consumption cost of the steel wire rope is 12.96 million yuan. The steel wire rope material cost can be saved by about 64.8 million yuan per year.

[0044] The above-described embodiments are only preferred embodiments of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements of the technical solutions of the utility model made by those skilled in the art shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A grab hoist wire rope protection device, characterized by: The device comprises a baffle, a solid round steel and thickened steel plates; the thickened steel plates are symmetrically arranged at a certain distance apart; the front end and the rear end of the thickened steel plates on both sides are respectively fixedly connected with a solid round steel; the inner side of the solid round steel is fixedly connected with the baffle at the corresponding positions on both sides of the end of the wire rope pulley.

2. A grab hoist wire rope protection device according to claim 1, characterised in that: Reinforcing ribs are arranged between the thickened steel plates and the solid round steel on both sides of the end of the solid round steel.

3. A grab hoist wire rope protection device according to claim 1, characterized in that: Reinforcing ribs are arranged between the baffle and the solid round steel on both sides of the baffle.

4. A grab hoist wire rope protection device according to claim 1, characterized in that: The baffle is made of high-strength and low-friction coefficient material.

5. A grab hoist wire rope protection device according to claim 1, characterized in that: One end of the baffle is provided with a circular-arc-shaped groove corresponding to the solid round steel, and the baffle is clamped and fixedly welded with the solid round steel through the circular-arc-shaped groove.

6. A grab hoist wire rope protection device according to claim 1, characterized in that: The material of the solid round steel is high-strength and wear-resistant alloy steel.

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