CN210505096U

CN210505096U - Cable drum under condition of high-frequency high-speed cable winding and unwinding

Info

Publication number: CN210505096U
Application number: CN201921594820.2U
Authority: CN
Inventors: 刘彬; 刘剑
Original assignee: Hunan Hinar Electric Co ltd
Current assignee: Hunan Hinar Electric Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-05-12
Anticipated expiration: 2029-09-24

Abstract

The utility model discloses a cable drum under the condition of high-frequency high-speed cable of receiving and releasing comprises reel, reducing gear box, drive unit and electrically conductive slip ring case, its characterized in that: the driving unit is a flexible driving system and is connected with the reduction gearbox through tooth transmission or chain transmission, and a vortex spring is installed on an output shaft of the reduction gearbox. The utility model relates to a cable drum suitable for under the condition of high-frequency high-speed cable of receiving and releasing has solved cable drum and has received the too big and undulant great problem of cable tension that leads to of impact torque when releasing the cable to safe in utilization, reliable, and make the life of cable very prolong.

Description

Cable drum under condition of high-frequency high-speed cable winding and unwinding

Technical Field

The utility model relates to a cable drum especially relates to a cable drum under the condition of high-frequency high-speed cable of receiving and releasing.

Background

At present, the loading and unloading cranes (such as container cranes, grab bucket cranes and other lifting appliances) are required to have high efficiency, so that the cable drums for supplying power to the cranes are required to operate at high speed and high efficiency. At present, a combined drive of a three-phase asynchronous motor and a hysteresis coupler, a combined drive of a three-phase asynchronous motor and a hydraulic coupler, a combined drive of variable frequency control and a variable frequency motor and the like are mostly adopted as drive units of a cable drum. These drive units are able to achieve the required winding speed and winding torque and also have an overload protection function for the cable. However, in the process of winding and unwinding the cable by the winding drum, particularly, the transient large tension impact on the cable is caused by the instant driving unit during starting, the fluctuation range of the tension on the cable is large, the sheath of the cable is easily damaged, and the service life of the cable is greatly shortened.

In view of the situation, the cable drum is generally required to reduce the transmission ratio of the reduction gearbox, so that the number or power of the driving units is increased, the output torque is softer, and the impact on the cable during cable reeling and unreeling is reduced. However, this method is not a perfect solution because of the high impact on the cable, which is required to run at a high speed.

Disclosure of Invention

The utility model aims at improving and innovating the problem that exists among the background art, provide a cable drum that can receive and release the condition under the cable at a high speed at high frequency, utilize the characteristic of vortex spring, impact torque is too big and the undulant great problem of cable tension that receives that leads to when solving cable drum and receive and release the cable to safe in utilization, reliable makes the life of cable very prolong.

The utility model adopts the technical proposal that: a cable drum under the condition of high-frequency and high-speed cable winding and unwinding comprises a reel, a reduction gearbox, a driving unit and a conductive sliding ring box, wherein the driving unit is a flexible driving system and is connected with the reduction gearbox through tooth transmission or chain transmission, and a vortex spring is installed on an output shaft of the reduction gearbox.

The flexible driving system mainly comprises a combined drive of a three-phase asynchronous motor and a hysteresis coupler, a combined drive of a three-phase asynchronous motor and a hydraulic coupler, a combined drive of variable frequency control and a variable frequency motor and the like.

The output torque of the vortex spring is larger than that of the driving unit, and the output torque of the vortex spring is more than 1.25 times of that of the driving unit.

Effective number of turns of whirling spring 4 ~ 8 circles guarantee to cushion 1 ~ 3 circles after, can also have 1 ~ 2 circles to reserve the buffering.

The outer hook of the vortex spring is connected with the spring outer cover, and the inner hook is connected with the output shaft of the reduction gearbox.

The utility model has the advantages and beneficial effect:

1. the utility model discloses according to the working characteristic of whirling spring: the moment is increased along with the increase of the number of working turns, the moment is soft, the output shaft of the reduction gearbox is provided with the vortex spring, and after the instant impact of the driving unit is eliminated, the moment acts on the output shaft of the reduction gearbox.

2. The utility model discloses a whirling spring output torque is greater than drive unit's moment, and the output torque of general whirling spring is more than 1.25 times of drive unit's moment, can prevent that the whirling spring from reaching the biggest pretension volume at the during operation, damages the whirling spring

3. The utility model discloses the effective number of turns of the whirling spring of configuration 4 ~ 8 circles can guarantee like this that 1 ~ 3 circles of back are cushioned to the whirling spring, can also have 1 ~ 2 circles to reserve the buffering.

4. The utility model discloses a flexible actuating system and install the whirling spring on the reducing gear box output shaft, its processing mode all is flexible, and impact torque is too big and the undulant great problem of tension that the cable receives that leads to when having solved cable drum receive and release cable, make the life of cable very prolong.

5. The utility model discloses receive and release of small cable or optical cable when mainly being suitable for long distance, high speed, high frequency service condition, can strike the protection to the cable, and guarantee normally to receive and release the cable.

Drawings

FIG. 1 is a block diagram of the present invention;

in the figure, 1, reel; 2. a cable; 3. a reduction gearbox output shaft; 4. a whirling spring; 5. a reduction gearbox; 6. a flange plate; 7. a gear or sprocket; 8. a drive unit; 9. conductive slip ring box.

Detailed Description

The invention is further described below with reference to the drawings and the specific examples.

As shown in figure 1, the utility model discloses mainly by reel 1, cable 2, reducing gear box 5, whirling spring 4, drive unit 8, electrically conductive slip ring case 9 constitute, drive unit 8 adopts flexible actuating systems such as hysteresis lag coupling drive, hydraulic coupling drive or inverter motor. The driving unit 8 is connected with the reduction box 5 through bolts, a gear or a chain wheel 7 is installed on an output shaft of the driving unit and is connected with an inner flange 6 of the reduction box through tooth transmission or chain transmission, the flange 6 is connected with an outer cover 10 of a vortex spring through bolts, an inner hook and an outer hook of the vortex spring are respectively connected with the outer cover 10 of the spring and an output shaft 3 of the reduction box, the output shaft 3 of the reduction box is provided with a flange and is connected with the reel 1 through bolts, the cable 2 is wound on the reel 1, one end of the cable 2 is connected with a sliding ring in the conductive sliding ring box 9, and the other end.

The utility model discloses according to required coiling moment, spring output moment should be greater than drive unit's moment promptly, and the output moment of general whirling spring is more than 1.25 times of drive unit's moment. The effective number of turns of whirling spring is 4 ~ 8 circles, guarantees to cushion 1 ~ 3 circles after, can also have 1 ~ 2 circles to reserve the buffering.

The utility model discloses the theory of operation: drive unit 8 starts, transmit moment to the ring flange 6 that has the bearing through sprocket or gear 7 in the reducing gear box, ring flange 6 drives spring dustcoat 10 rotatory, the spring dustcoat drives the rotation of colluding outward of whirling spring 4, at this moment, the buffering through the spring is acted on the reducing gear box output shaft with moment after 8 impact elimination in the twinkling of an eye with drive unit, act on reel 1 and cable 2 with moment through reducing gear box output shaft 3, thereby reach the function of buffering to the moment that acts on the cable when realizing collecting the cable, the effectual protection cable does not receive tension to strike and injure the damage constantly, improve the reliability and the life of product greatly.

The utility model discloses mainly be suitable for small cable or optical cable, long distance, the high speed is to cable shock protection and normal receive and release cable during high frequency service mode, if: the device is used for a container spreader to finish the high-speed and high-frequency retraction of power and signal cables of a current collecting box spreader; or the cable is used for port ship unloading grab buckets to finish high-speed and high-frequency retraction and extension of grab bucket power and signal cables.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A cable drum under the condition of high-frequency and high-speed cable reeling and unreeling is composed of a reel, a reduction gearbox, a driving unit and a conductive sliding ring box, and is characterized in that: the driving unit is a flexible driving system and is connected with the reduction gearbox through tooth transmission or chain transmission, and a vortex spring is installed on an output shaft of the reduction gearbox.

2. The cable reel for high-frequency and high-speed cable reeling and unreeling according to claim 1, wherein: the flexible driving system is a combined drive of a three-phase asynchronous motor and a hysteresis coupler, a combined drive of a three-phase asynchronous motor and a hydraulic coupler or a combined drive of variable frequency control and a variable frequency motor.

3. The cable reel for high-frequency and high-speed cable reeling and unreeling according to claim 1, wherein: the output torque of the vortex spring is greater than the torque of the drive unit.

4. The cable reel for high-frequency and high-speed cable reeling and unreeling according to claim 1, wherein: the effective number of turns of the vortex spring is 4-8.

5. The cable reel for high-frequency and high-speed cable reeling and unreeling according to claim 1, wherein: the outer hook of the vortex spring is connected with the spring outer cover, and the inner hook is connected with the output shaft of the reduction gearbox.