Steel wire winder for grab bucket

Abstract

The utility model discloses a steel wire winder for a grab bucket, and relates to the technical field of winders, the steel wire winder comprises a connecting piece, a switch I and an external power supply, the upper surface of a connecting plate is fixedly provided with a motor, an output shaft of the motor is fixedly provided with a transmission shaft, and the outer side surface of the transmission shaft is fixedly provided with a main wire winding roller; three steel wire ropes are fixedly connected to the main wire coiling roller, and a grab bucket body is fixedly installed at one ends of the steel wire ropes. A second switch is fixedly installed on the lower surface of the connecting piece, and a base plate is fixedly installed on the upper surface of the connecting piece. According to the grab bucket, the connecting piece, the supporting plate, the motor, the grab bucket body connecting plate and the steel wire ropes are arranged in a matched mode, the three steel wire ropes which do not coincide are used for providing power for the grab bucket, and the potential safety hazard of rotation of the grab bucket in the moving process is relieved; through cooperative arrangement of the motor, the first switch, the second switch, the base plate and the external power source, the base plate made of rubber triggers the second switch when negligence occurs, the power source of the motor is cut off, and the overall safety redundancy is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of wire reelers, in particular to a wire reeler for a grab bucket. Background Technique

[0002] A grab bucket is a special tool for a crane to grab dry bulk goods. It consists of two or more openable and closable bucket-shaped jaw plates that together form a space for containing materials. When loading, the jaw plates are closed in the material pile, and the materials are grabbed into the containing space. When unloading, the jaw plates are opened in a suspended state on the material pile, and the materials are scattered on the material pile. The opening and closing of the jaw plates are generally controlled by the steel wire rope of the crane hoisting mechanism. Grab bucket operation involves no heavy physical labor, can achieve high loading and unloading efficiency and ensure safety, and is the main dry bulk goods loading and unloading tool in ports. According to the types of goods handled, it can be divided into ore grab buckets, coal grab buckets, grain grab buckets, wood grab buckets, etc.

[0003] In the existing grab bucket, the grab bucket of the component is connected to the power supply mechanism through a single or concentrated steel wire rope. During the movement of the grab bucket, it may rotate, which may cause potential safety hazards in the stability of the grab hook.

[0004] In some existing grab buckets, the safety of the limit device is poor. When the steel wire rope is wound up, due to improper operation, the grab bucket may collide with other mechanisms, which will cause damage to the grab bucket components and pose certain safety hazards. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a wire reeler for a grab bucket, which solves the problems raised in the above background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above objectives, the utility model is realized through the following technical solutions: A wire reeler for a grab bucket includes a connecting piece, switch one, and an external power supply. Through holes are provided on the upper surface of the connecting plate. Support plates are fixedly installed on both sides of the through holes. A motor is fixedly installed on the upper surface of the connecting plate. A transmission shaft is fixedly installed on the output shaft of the motor. A total wire reeling roller is fixedly installed on the outer side of the transmission shaft. Three steel wire ropes are fixedly connected to the total wire reeling roller. One end of each steel wire rope is fixedly installed with a grab bucket main body; a switch two is fixedly installed on the lower surface of the connecting piece, and a backing plate is fixedly installed on the upper surface of the connecting piece.

[0009] Optionally, the transmission shaft penetrates through the two support plates, and the transmission shaft is rotationally connected to the support plates.

[0010] Optionally, the total wire reel is located between two support plates. The total wire reel includes three sub-wire reels. Two partition plates are fixedly installed on the outer side surface of the total wire reel, and the partition plates divide the total wire reel into three sub-wire reels with equal lengths.

[0011] Optionally, a connecting plate is provided at the upper part of the grab body. The connecting plate is located directly below the through hole. Three steel wire ropes pass through the through hole and are fixedly connected to the connecting plate.

[0012] Optionally, the connecting lines of the fixing points of the three steel wire ropes on the connecting plate form a triangle, and the three steel wire ropes are respectively wound around the three sub-wire reels.

[0013] Optionally, the switch one adopts a self-resetting normally open push-button switch, and the switch two adopts a self-resetting normally closed push-button switch.

[0014] Optionally, the backing plate is made of rubber material. The backing plate is located below the switch two. When the backing plate abuts against the connecting member, the switch two is pressed and triggered.

[0015] Optionally, the external power supply, the switch one, the switch two, and the motor are located in the same circuit. After the switch one and the switch two are connected in parallel, they are then connected in series with the external power supply and the motor.

[0016] (III) Beneficial Effects

[0017] The present utility model provides a steel wire coiling device for a grab, having the following beneficial effects:

[0018] 1. For the steel wire coiling device for a grab, through the cooperative setting of the connecting member, the support plate, the motor, the grab body connecting plate, and the steel wire rope, three non-overlapping steel wire ropes are used to provide power for the grab, maximizing the solution of the safety hazard of the grab rotating during movement and providing favorable conditions for subsequent lowering of objects;

[0019] 2. For the steel wire coiling device for a grab, through the cooperative setting of the motor, the switch one, the switch two, the backing plate, and the external power supply, when being negligent, the backing plate made of rubber material triggers the switch two to cut off the power supply of the motor, without the need for manual adjustment, increasing the overall safety redundancy and ensuring the personal safety of the staff. Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a front view structural schematic diagram of the present utility model;

[0022] Figure 3 is a bottom view structural schematic diagram of the connecting plate of the present utility model;

[0023] Figure 4 The right view structural schematic diagram of the support plate of the present utility model;

[0024] Figure 5 The circuit schematic diagram of the motor of the present utility model.

[0025] In the figure: 1, connecting piece; 2, support plate; 3, motor; 4, grab body; 5, external power supply; 6, backing plate; 7, steel wire rope; 8, switch one; 9, switch two; 101, through hole; 201, partition board; 202, main wire reel; 2021, sub-wire reel; 301, transmission shaft; 401, connecting plate. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0027] Embodiment 1

[0028] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: A steel wire rewinder for a grab, including a connecting piece 1, a switch one 8 and an external power supply 5. A through hole 101 is opened on the upper surface of the connecting plate 401. Support plates 2 are fixedly installed on both sides of the through hole 101. A motor 3 is fixedly installed on the upper surface of the connecting plate 401. A transmission shaft 301 is fixedly installed on the output shaft of the motor 3. The transmission shaft 301 penetrates through the two support plates 2, and the transmission shaft 301 is rotationally connected to the support plate 2. A main wire reel 202 is fixedly installed on the outer side surface of the transmission shaft 301. Three steel wire ropes 7 are fixedly connected to the main wire reel 202. The main wire reel 202 is located between the two support plates 2. The main wire reel 202 includes three sub-wire reels 2021. Two partition boards 201 are fixedly installed on the outer side surface of the main wire reel 202. The partition boards 201 divide the main wire reel 202 into three sub-wire reels 2021 with equal lengths. One end of the steel wire rope 7 is fixedly installed with a grab body 4. A connecting plate 401 is arranged on the upper part of the grab body 4. The connecting plate 401 is located directly below the through hole 101. The three steel wire ropes 7 penetrate through the through hole 101 and are fixedly connected to the connecting plate 401. The connecting lines of the fixing points of the three steel wire ropes 7 on the connecting plate 401 form a triangle. The three steel wire ropes 7 are respectively wound on the three sub-wire reels 2021.

[0029] In use, the connecting plate 401 is connected to a tower crane, a crane or other lifting structures. Depending on the actual situation, the connecting plate 401 can be movable or immovable. Here, only the movement of the grab is discussed. First, start the motor 3 to control the rotation of the transmission shaft 301 fixedly connected to the output shaft of the motor 3. The main wire reel 202 sleeved and fixed on the outer side of the transmission shaft 301 rotates with the transmission shaft 301. The three steel wire ropes 7 wound around the main wire reel 202 are lowered. The connecting plate 401 drops with the steel wire ropes 7, and the grab body 4 fixedly connected to the connecting plate 401 drops with the connecting plate 401 until the grab body 4 clamps an object. Then, control the motor 3 to rotate in the reverse direction. At this time, the three steel wire ropes 7 are tightened. The fixing points of the three steel wire ropes 7 on the connecting plate 401 form a triangle, and a triangle has stability. Whenever the grab body 4 has a tendency to rotate, the three steel wire ropes 7 restrict each other to keep the grab body 4 balanced. The two partition plates 201 divide the main wire reel 202 into three sub-wire reels 2021 to prevent interference between the three steel wire ropes 7 and provide necessary conditions for recycling.

[0030] Embodiment 2

[0031] Please refer to Figure 1 and Figure 5 , the present utility model provides a technical solution: a steel wire winding device for a grab. A switch two 9 is fixedly installed on the lower surface of the connecting member 1. The switch one 8 is a self-resetting normally open push-button switch, and the switch two 9 is a self-resetting normally closed push-button switch. A cushion plate 6 is fixedly installed on the upper surface of the connecting member 1. The cushion plate 6 is made of rubber material and is located below the switch two 9. When the cushion plate 6 abuts against the connecting member 1, the switch two 9 is pressed and triggered. The external power supply 5, the switch one 8, the switch two 9 and the motor 3 are located in the same circuit. After the switch one 8 and the switch two 9 are connected in parallel, they are then connected in series with the external power supply 5 and the motor 3.

[0032] In use, a mechanical switch (consisting of Figure 5The unlabeled switch symbols in it (as shown) are used to control the forward and reverse rotation and opening and closing of the motor 3. The mechanical switch and switch 8 are within the control range of the staff. All components in the circuit are electrically connected through wires. Usually, the staff controls the rise and fall of the grab body 4 through the mechanical switch. In addition, in actual production and life, the external power supply 5 is usually placed on the ground. During the use of the grab when it is rising, there may be situations where the staff is distracted or the mechanical switch fails, resulting in the power supply of the motor 3 not being cut off in time. At this time, there is a possibility that the grab body 4 collides with the connecting member 1. To avoid a worse situation, a rubber pad 6 is installed on the connecting plate 401 of the grab body 4 to absorb the impact energy. After the pad 6 collides with the connecting member 1, the second switch 9 is triggered, and the normally closed button is triggered to become an open state, realizing the function of automatically cutting off the circuit and avoiding subsequent dangers. After checking for dangers, press switch 8 to connect the circuit and then regain control of the motor 3 through the mechanical switch to lower the grab and eliminate the danger. Finally, release switch 8, and the circuit returns to the initial state.

[0033] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A wire coiler for a grab bucket, comprising a connecting piece, a first switch, a connecting plate and an external power supply, characterized in that: A through hole is formed in the upper surface of the connecting plate. Support plates are fixedly installed on both sides of the through hole. A motor is fixedly installed on the upper surface of the connecting plate. A transmission shaft is fixedly installed on the output shaft of the motor. A total wire reel is fixedly installed on the outer side surface of the transmission shaft. Three steel wire ropes are fixedly connected to the total wire reel. One end of each steel wire rope is fixedly installed with a grab body; a switch two is fixedly installed on the lower surface of the connecting member, and a backing plate is fixedly installed on the upper surface of the connecting member.

2. The wire coiler for a grab according to claim 1, characterized in that: The transmission shaft penetrates through the two support plates, and the transmission shaft is rotatably connected to the support plates.

3. The wire coiling device for a grab according to claim 1, characterized in that: The total wire reel is located between the two support plates. The total wire reel includes three sub-wire reels. Two partition plates are fixedly installed on the outer side surface of the total wire reel. The partition plates divide the total wire reel into three sub-wire reels with equal lengths.

4. The wire coiler for a grab according to claim 3, characterized in that: The upper part of the grab body is provided with a connecting plate. The connecting plate is located directly below the through hole. The three steel wire ropes pass through the through hole and are fixedly connected to the connecting plate.

5. A wire coiler for a grab according to claim 4, characterized in that: The connecting lines of the fixing points of the three steel wire ropes on the connecting plate form a triangle, and the three steel wire ropes are respectively wound on the three sub-wire reels.

6. The wire coiler for a grab according to claim 1, characterized in that: The switch one adopts a self-resetting normally open push-button switch, and the switch two adopts a self-resetting normally closed push-button switch.

7. The wire coiler for a grab according to claim 6, characterized in that: The backing plate is made of rubber material. The backing plate is located below the switch two. When the backing plate abuts against the connecting member, the switch two is pressed and triggered.

8. The wire coiler for a grab according to claim 7, characterized in that: The external power supply, the switch one, the switch two and the motor are located in the same circuit. The switch one and the switch two are connected in parallel and then connected in series with the external power supply and the motor.

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