Crane roller reverse winding device

Abstract

The utility model discloses a crane drum reverse winding device, which belongs to the technical field of cranes and comprises a U-shaped fixing frame, and bearings are arranged on opposite inner walls of the U-shaped fixing frame. The device has the beneficial effects that the infrared emitter, the controller, the electric hydraulic push rod and the alarm buzzer are arranged, the infrared emitter emits infrared signals, the infrared receiver receives the infrared signals when the device does not stop at the position of the safety ring of the winding drum steel wire rope, and the alarm buzzer gives an alarm when the infrared receiver receives the infrared signals. A controller automatically starts an electric hydraulic push rod to drive an arc-shaped plate to move, the arc-shaped plate drives a second friction plate to make contact with a first friction plate, a winding drum is continuously braked through friction force between the first friction plate and the second friction plate, damage to equipment is avoided, and meanwhile the controller starts an alarm buzzer to work; and a worker is reminded through the alarm buzzer, so that the worker can overhaul the equipment in time.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and more specifically, to a crane drum rewinding device. Background Art

[0002] With the increasing number of crane applications, the shaft head rotation limit cannot meet the safety requirements of the application, and a soft limit method is adopted. However, for the operator, if the protection value is not set in time as required, there will be certain safety hazards. For example, during the use of the crane, there are many factors such as command and operation errors or electronic control system equipment failures, which make the lifting mechanism not stop at the safety circle position of the drum wire rope, but continue to descend, causing the wire rope to rewind on the drum, causing the overhead crane wire rope to be damaged and scrapped or other related equipment to be damaged, increasing the workload of equipment inspection and maintenance, and at the same time increasing the inspection and maintenance costs. However, the existing crane drum rewinding device does not have an alarm function and cannot promptly remind the staff to perform maintenance. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a crane drum rewinding device having an alarm function.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides a crane drum rewinding device, including a U-shaped fixing frame, bearings are arranged on the relative inner walls of the U-shaped fixing frame, the same driving shaft is passed through the interiors of the two bearings, a drum is fixedly connected to the driving shaft, a wire rope is wound and fixed on the surface of the drum, grooves are provided on the relative inner walls of the drum, an infrared transmitter and an infrared receiver are respectively provided inside the two grooves, a control shell is fixedly connected to the side of the U-shaped fixing frame, a controller and an alarm buzzer are provided inside the control shell, annular grooves are provided on both sides of the drum, a first friction plate is provided on the inner walls of the two annular grooves, electric hydraulic push rods are fixedly connected to the relative surfaces of the U-shaped fixing frame, the relative ends of the two electric hydraulic push rods are fixedly connected to arc plates, and second friction plates are provided on the relative surfaces of the two arc plates.

[0007] When the crane drum rewinding device of the technical solution is used, an infrared signal is sent out through an infrared transmitter, and when the drum wire rope does not stop at the safety loop position, the infrared receiver receives the infrared signal. When the infrared receiver receives the infrared signal, the controller automatically starts the electric hydraulic push rod to drive the arc plate to move, so that the arc plate drives the second friction plate to contact the first friction plate, and the friction force between the first friction plate and the second friction plate is used to continuously brake the drum to avoid damage to the equipment. At the same time, the controller starts the alarm buzzer to remind the staff through the alarm buzzer, so that the staff can repair the equipment in time.

[0008] Furthermore, a rectangular through hole is provided at the bottom of the U-shaped fixing frame, and the steel wire rope is movably arranged inside the rectangular through hole.

[0009] Furthermore, the surface of the arc-shaped plate is fixedly connected to a limiting column, limiting holes are provided on both sides of the U-shaped fixing frame, and the limiting column is slidably connected inside the limiting hole.

[0010] Furthermore, a through hole is provided on the surface of the control shell.

[0011] Furthermore, the position of the arc plate corresponds to the position of the annular groove.

[0012] (3) Beneficial effects

[0013] In summary, the utility model has the following beneficial effects:

[0014] The crane drum rewinding device is provided with an infrared transmitter, a controller, an electric hydraulic push rod and an alarm buzzer. The infrared transmitter sends an infrared signal. When the drum wire rope does not stop at the safety ring position, the infrared receiver receives the infrared signal. When the infrared receiver receives the infrared signal, the controller automatically starts the electric hydraulic push rod to drive the arc plate to move, so that the arc plate drives the second friction plate to contact the first friction plate, and the friction between the first friction plate and the second friction plate is used to continuously brake the drum to avoid damage to the equipment. At the same time, the controller starts the alarm buzzer to remind the staff through the alarm buzzer, so that the staff can repair the equipment in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic structural diagram of a three-dimensional cross section of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0018] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle B part;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the utility model.

[0020] The symbols in the accompanying drawings are:

[0021] 1. U-shaped fixing frame; 2. driving shaft; 3. reel; 4. wire rope; 5. rectangular through hole; 6. groove; 7. infrared transmitter; 8. control shell; 9. controller; 10. alarm buzzer; 11. through hole; 12. annular groove; 13. first friction plate; 14. electric hydraulic push rod; 15. arc plate; 16. second friction plate; 17. limit column; 18. limit hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0023] Example:

[0024] The following is combined with Figure 1-4 The utility model is described in further detail.

[0025] See also Figure 1-4The utility model provides a technical solution: a crane drum rewinding device, comprising a U-shaped fixing frame 1, bearings are arranged on the relative inner walls of the U-shaped fixing frame 1, the same driving shaft 2 is penetrated inside the two bearings, a drum 3 is fixedly connected to the driving shaft 2, a wire rope 4 is wound and fixed on the surface of the drum 3, grooves 6 are arranged on the relative inner walls of the drum 3, infrared transmitters 7 and infrared receivers are arranged inside the two grooves 6 respectively, a control shell 8 is fixedly connected to the side of the U-shaped fixing frame 1, a controller 9 and an alarm buzzer 10 are arranged inside the control shell 8, annular grooves 12 are arranged on both sides of the drum 3, first friction plates 13 are arranged on the inner walls of the two annular grooves 12, electric hydraulic push rods 14 are fixedly connected to the relative surfaces of the U-shaped fixing frame 1, and the opposite ends of the two electric hydraulic push rods 14 are fixedly connected to arc Plate 15, second friction plates 16 are arranged on the opposite surfaces of the two arc-shaped plates 15, and an infrared transmitter 7, a controller 9, an electric hydraulic push rod 14 and an alarm buzzer 10 are arranged. An infrared signal is sent out by the infrared transmitter 7. When the safety ring position of the wire rope 4 of the drum 3 is not stopped, the infrared receiver receives the infrared signal. When the infrared receiver receives the infrared signal, the controller 9 automatically starts the electric hydraulic push rod 14 to drive the arc-shaped plate 15 to move, so that the arc-shaped plate 15 drives the second friction plate 16 to contact the first friction plate 13, and the friction force between the first friction plate 13 and the second friction plate 16 is used to continuously brake the drum 3 to avoid damage to the equipment. At the same time, the controller 9 starts the alarm buzzer 10 to remind the staff through the alarm buzzer 10, so that the staff can repair the equipment in time.

[0026] Specifically, a rectangular through hole 5 is formed at the bottom of the U-shaped fixing frame 1 , and the steel wire rope 4 is movably inserted into the rectangular through hole 5 .

[0027] Specifically, the surface of the arc plate 15 is fixedly connected to the limiting pillars 17 , and limiting holes 18 are provided on both sides of the U-shaped fixing frame 1 , and the limiting pillars 17 are slidably connected inside the limiting holes 18 .

[0028] By adopting the above technical solution, the limiting column 17 slides inside the limiting hole 18 to limit the arc plate 15 .

[0029] Specifically, a through hole 11 is formed on the surface of the control housing 8 .

[0030] By adopting the above technical solution, the sound of the alarm buzzer 10 is easily transmitted through the through hole 11.

[0031] Specifically, the position of the arc plate 15 corresponds to the position of the annular groove 12 .

[0032] The working principle of the utility model is:

[0033] When the utility model is in use, an infrared signal is sent out through the infrared transmitter 7. When the steel wire rope 4 of the drum 3 does not stop at the safety ring position, the infrared receiver receives the infrared signal. When the infrared receiver receives the infrared signal, the controller 9 automatically starts the electric hydraulic push rod 14 to drive the arc plate 15 to move, so that the limit column 17 slides inside the limit hole 18, and the arc plate 15 drives the second friction plate 16 to contact the first friction plate 13. The friction force between the first friction plate 13 and the second friction plate 16 is used to continuously brake the drum 3. At the same time, the controller 9 starts the alarm buzzer 10 to remind the staff through the alarm buzzer 10, so that the staff can repair the equipment in time.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A crane drum rewinding device, comprising a U-shaped fixing frame (1), characterized in that: The U-shaped fixing frame (1) is provided with bearings on the opposite inner walls thereof, the two bearings are provided with a same drive shaft (2), the drive shaft (2) is fixedly connected with a reel (3), the surface of the reel (3) is wound with a steel wire rope (4), the opposite inner walls of the reel (3) are provided with grooves (6), the insides of the two grooves (6) are provided with infrared transmitters (7) and infrared receivers respectively, the side of the U-shaped fixing frame (1) is fixedly connected with a control shell (8), the inside of the control shell (8) is provided with a controller (9) and an alarm buzzer (10), the two sides of the reel (3) are provided with annular grooves (12), the inner walls of the two annular grooves (12) are provided with first friction plates (13), the opposite surfaces of the U-shaped fixing frame (1) are fixedly connected with electric hydraulic push rods (14), the opposite ends of the two electric hydraulic push rods (14) are fixedly connected with arc plates (15), and the opposite surfaces of the two arc plates (15) are provided with second friction plates (16).

2. A crane drum rewinding device according to claim 1, characterized in that: A rectangular through hole (5) is provided at the bottom of the U-shaped fixing frame (1), and the steel wire rope (4) is movably inserted into the rectangular through hole (5).

3. A crane drum rewinding device according to claim 1, characterized in that: The surface of the arc-shaped plate (15) is fixedly connected to a limiting column (17), and limiting holes (18) are provided on both sides of the U-shaped fixing frame (1), and the limiting column (17) is slidably connected inside the limiting hole (18).

4. A crane drum rewinding device according to claim 1, characterized in that: A through hole (11) is provided on the surface of the control housing (8).

5. A crane drum rewinding device according to claim 1, characterized in that: The position of the arc-shaped plate (15) corresponds to the position of the annular groove (12).

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