Steel wire rope fixed-length winding and unwinding device

Abstract

The utility model provides a steel wire rope fixed-length winding and unwinding device which comprises a wire supply tray and a wire take-up tray, a meter counting wire pressing wheel and a cutting machine are arranged between the wire supply tray and the wire take-up tray, the wire supply tray and the wire take-up tray are linked through a transmission mechanism, and the transmission ratio of the transmission mechanism can be dynamically adjusted. The meter counting line pressing wheel elastically presses the steel wire rope and floats along with the tensioning / loosening condition of the steel wire rope; and a position trigger switch is arranged to monitor the position condition of the meter counting line pressing wheel and is used for triggering the gear shifting action of the transmission. The fixed-length winding and unwinding device for the steel wire rope can replace manual measurement of the length of the steel wire rope, automatic fixed-length cutting is achieved, and operation efficiency is improved. The wire supply winding drum and the take-up winding drum synchronously rotate through the transmission mechanism, on one hand, the steel wire rope can be prevented from being directly pulled, on the other hand, the wire supply winding drum can be stopped in time when the take-up winding drum stops taking up, and the situation that the wire supply winding drum continuously releases the steel wire rope under the inertia effect is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable maintenance equipment, and particularly relates to a device for winding and unwinding a steel wire rope with a fixed length. Background Art

[0002] A crane is a commonly used device in heavy industrial enterprises such as steel mills. The steel wire rope in the crane needs to be replaced and maintained regularly. Usually, the total length of the finished steel wire is greater than the actual requirement of the crane. Therefore, it needs to be measured and cut before replacement. At present, before each replacement of the steel wire rope of the crane, manual counting and winding of the steel wire rope are generally adopted, and then cutting is carried out. There are many large cranes in the factory, and the equipped steel wire ropes are relatively thick. The manual fixed-length cutting operation is time-consuming and laborious. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a device for winding and unwinding a steel wire rope with a fixed length, so as to simplify the measurement and cutting work of the steel wire rope by personnel.

[0004] The utility model realizes the above technical purpose through the following technical means.

[0005] A device for winding and unwinding a steel wire rope with a fixed length includes a wire supply tray and a wire take-up tray. A length measuring and wire pressing wheel and a cutting machine are arranged between the two. The wire supply tray and the wire take-up tray are linked by a transmission mechanism, and the transmission ratio of the transmission mechanism can be dynamically adjusted.

[0006] Further, the transmission mechanism includes a transmission shaft, a gearbox and an output shaft. The transmission shaft is connected to the wire take-up tray, the output shaft is connected to the wire supply tray, and the transmission shaft and the output shaft are connected by the gearbox.

[0007] Further, the wire take-up tray is driven to rotate by a motor.

[0008] Further, auxiliary wire pressing wheels for supporting the steel wire rope are arranged on both sides of the length measuring and wire pressing wheel. The positions of the auxiliary wire pressing wheels are constant, and the length measuring and wire pressing wheel elastically presses the steel wire rope, and its position floats with the tension / relaxation of the steel wire rope.

[0009] Further, a position trigger switch is provided to monitor the position of the length measuring and wire pressing wheel, and is used to trigger the gear shifting action of the transmission.

[0010] Further, the position trigger switch is triggered and linked with the gearbox through an electric control system.

[0011] Further, the position trigger switch includes an upper position switch and a lower position switch. When the upper position switch is triggered, the gearbox reduces the transmission ratio accordingly; when the lower position switch is triggered, the gearbox increases the transmission ratio accordingly.

[0012] The beneficial effects of the utility model are as follows:

[0013] (1) The utility model provides a device for winding and unwinding steel wires with a fixed length, which can replace manual measurement of the length of steel wires, realize automatic cutting with a fixed length, thereby simplifying the workload of personnel and improving the operation efficiency.

[0014] (2) In the utility model, the wire supply reel and the wire take-up reel are synchronously rotated through a transmission mechanism. Compared with the conventional form in which the wire take-up reel directly relies on the steel wire to pull the wire supply reel to rotate, on the one hand, it can avoid directly pulling the steel wire, and on the other hand, it can make the wire supply reel stop in time when the wire take-up reel stops taking up the wire, avoiding the wire supply reel from continuously releasing the steel wire due to inertia. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the device for winding and unwinding steel wires with a fixed length of the utility model.

[0016] Reference Signs:

[0017] 1 - wire supply reel; 2 - wire supply tray; 3 - output shaft; 4 - gearbox;

[0018] 5 - length measuring and wire pressing wheel; 6 - lower limit switch; 7 - upper limit switch; 8 - cutting machine;

[0019] 9 - transmission shaft; 10 - wire take-up tray; 11 - wire take-up reel; 12 - motor;

[0020] 13 - auxiliary wire pressing wheel. Detailed Embodiment

[0021] The embodiments of the utility model are described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference signs denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and should not be construed as a limitation to the utility model.

[0022] As Figure 1 For the device for winding and unwinding steel wires with a fixed length shown, a wire supply tray 2 is provided on one side above the base, and a wire take-up tray 10 is provided on the other side. Among them, the wire supply tray 2 is used to place the wire supply reel 1, that is, the finished steel wire coil usually purchased; correspondingly, the wire take-up tray 10 is used to place the wire take-up reel 11.

[0023] A motor 12 is provided on the base, and the motor 12 is located on the side close to the wire take-up tray 10. The driving shaft of the motor is connected to the driving gear of the wire take-up tray 10 for directly driving the wire take-up tray 10 to rotate. At the same time, the wire take-up tray 10 also transmits the power to the wire supply tray 2 through a corresponding transmission mechanism, so that the wire supply reel 1 can rotate synchronously with the wire take-up reel 11, avoiding excessive pulling of the steel wire between the wire take-up reel 10 and the wire supply reel 1.

[0024] The above-mentioned traditional mechanism includes a drive shaft 9, a gearbox 4, and an output shaft 3. One end of the drive shaft 9 is connected to the wire take-up tray 10, and the other end is connected to the output shaft 3 through the gearbox 4. The other end of the output shaft 3 is connected to the wire supply tray 2. The gearbox 4 is used to adjust the speed ratio between the wire supply reel 1 and the wire take-up reel 10 to avoid the problem of inconsistent wire rope winding and unwinding rates caused by different diameters or wire winding thicknesses of the two.

[0025] A length measuring and wire pressing wheel 5 and a cutting machine 8 are provided between the wire supply tray 2 and the wire take-up tray 10. The length measuring and wire pressing wheel 5 presses on the wire rope transmitted between the wire supply reel 1 and the wire take-up reel 11 and is used to measure the winding and unwinding length of the wire rope. The cutting machine 8 is used to cut the wire rope after the wire rope is measured to a specified length.

[0026] An auxiliary wire pressing wheel 13 is provided on each side of the length measuring and wire pressing wheel 5. The heights of the two auxiliary wire pressing wheels 13 are constant, and the wire rope passes above them. The two auxiliary wire pressing wheels 13 are used to assist in lifting the wire rope. The length measuring and wire pressing wheel 5 is provided with a spring structure in the vertical direction, and its position height can change with the tension / relaxation degree of the wire rope to ensure that the length measuring and wire pressing wheel 5 always presses on the wire rope.

[0027] Two position trigger switches are provided around the length measuring and wire pressing wheel 5, including an upper position switch 7 and a lower position switch 6, which are used to monitor the height change of the length measuring and wire pressing wheel 5. At the same time, the two position trigger switches are also linked with the gearbox 4, where:

[0028] 1) When the upper position switch 7 is triggered, it indicates that the wire rope between the wire supply reel 1 and the wire take-up reel 11 is over-tensioned. In this case, the gearbox 4 is controlled to reduce the transmission ratio between the drive shaft 9 and the output shaft 3 to increase the speed of the wire supply reel 1.

[0029] 2) When the lower position switch 6 is triggered, it indicates that the wire rope between the wire supply reel 1 and the wire take-up reel 11 is too loose. In this case, the gearbox 4 is controlled to increase the transmission ratio and reduce the speed of the wire supply reel 1.

[0030] The linkage between the position trigger switch and the gearbox 4 can be specifically realized through an electronic control system, that is, after the position trigger switch is triggered, the electronic control system controls the gearbox 4 to execute corresponding action instructions based on a pre-set automatic control program. The linkage between the position trigger switch and the gearbox 4 can also be realized by using a traditional mechanical structure, such as a form similar to a bicycle transmission, where shifting gears once by the switch to adjust the speed.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0032] The present utility model is not limited to the above embodiments. Without departing from the essence of the present utility model, any obvious improvements, substitutions or deformations that those skilled in the art can make all fall within the protection scope of the present utility model.

Claims

1. A fixed-length winding and releasing device for a steel wire rope, characterized in that: The invention comprises a wire supply tray (2) and a wire take-up tray (10), between which a meter-counting wire pressing wheel (5) and a cutting machine (8) are arranged. The wire supply tray (2) and the wire take-up tray (10) are linked to each other through a transmission mechanism, and the transmission ratio of the transmission mechanism can be dynamically adjusted.

2. The fixed-length winding and releasing device for steel wire rope according to claim 1, characterized in that: The transmission mechanism comprises a transmission shaft (9), a gearbox (4) and an output shaft (3), wherein the transmission shaft (9) is connected to a wire take-up tray (10), the output shaft (3) is connected to a wire supply tray (2), and the transmission shaft (9) and the output shaft (3) are connected via the gearbox (4).

3. The fixed-length winding and releasing device for steel wire rope according to claim 1, characterized in that: The wire take-up tray (10) is driven to rotate by a motor (12).

4. The fixed-length winding and releasing device for steel wire rope according to claim 2, characterized in that: Auxiliary pressing wheels (13) are provided on both sides of the meter pressing wheel (5) to lift the wire rope, the auxiliary pressing wheels (13) are in a constant position, and the meter pressing wheel (5) elastically presses the wire rope, and its position floats according to the tension / relaxation of the wire rope.

5. The fixed-length winding and releasing device for steel wire rope according to claim 4, characterized in that: A position trigger switch is provided to monitor the position of the meter pressing wheel and is used to trigger the gear shifting action of the gearbox (4).

6. The fixed-length winding and releasing device for steel wire rope according to claim 5, characterized in that: The position trigger switch is triggered in linkage with the gearbox (4) through an electric control system.

7. The fixed-length winding and releasing device for steel wire rope according to claim 5, characterized in that: The position trigger switch comprises an upper switch (7) and a lower switch (6), wherein when the upper switch (7) is triggered, the gearbox (4) accordingly reduces the transmission ratio; and when the lower switch (6) is triggered, the gearbox (4) accordingly increases the transmission ratio.

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