Cable voltage control device

Abstract

Cable voltage control device, comprising: at least one pair of first active rollers (10) configured such that a cable (1) is clamped between them; a first drive designed to drive the first active rollers (10) to rotate in order to propel the cable (1) forward; at least one pair of second active rollers (20) configured to clamp the cable (1) between them at a downstream position of the first active rollers (10); a second drive designed to drive the second active rollers (20) to rotate in order to propel the cable (1) forward; a floating roller (30) arranged between the first active roller (10) and the second active roller (20) and configured to exert a thrust force on the cable (1); and an actuator (40) suitable for moving the floating roller (30) vertically in order to adjust the thrust force exerted by the floating roller (30) on the cable (1), wherein the cable tension control device is designed to control a tensile force (T) exerted on the cable (1) by controlling the thrust force (F) exerted on the cable (1) by the floating pulley (30) and by controlling a speed difference between a first speed at which the first active pulleys (10) propel the cable (1) forward and a second speed at which the second active pulleys (20) propel the cable (1) forward such that the tensile force exerted on the cable (1) can be controlled to be equal to a predetermined tensile force.

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] This application claims the benefits of Chinese patent application No. 201921203403.0, which was filed with the National Intellectual Property Administration of China on July 29, 2019, and the entire disclosure of which is incorporated herein by reference. BACKGROUND Area of ​​the invention

[0002] The present disclosure relates to a cable voltage control device. Description of related techniques

[0003] To transport the cable stably, an appropriate tensile force must be applied to it. According to current technology, this tensile force is typically adjusted by moving a tensioning roller. However, this adjustment method results in an unstable and fluctuating tensile force, negatively impacting cable transmission. SUMMARY

[0004] The present disclosure was made in order to overcome or mitigate at least one aspect of the above-mentioned and other problems and disadvantages in the prior art.

[0005] According to one aspect of the present disclosure, a cable tension control device is provided, comprising: at least one pair of first active rollers configured such that a cable is clamped between them; a first drive configured to rotate the first active rollers in order to advance the cable; at least one pair of second active rollers configured such that the cable is clamped between them at a downstream position of the first active rollers; a second drive configured to rotate the second active rollers in order to advance the cable; a floating roller arranged between the first active roller and the second active roller and configured to exert a thrust force on the cable;and an actuator configured to drive the floating pulley so that it moves vertically in order to adjust the thrust exerted by the floating pulley on the cable, wherein the cable tension control device is configured to control a tensile force exerted on the cable by controlling the thrust exerted by the floating pulley on the cable and by controlling a speed difference between a first speed at which the first active pulleys propel the cable forward and a second speed at which the second active pulleys propel the cable forward, such that the tensile force exerted on the cable can be controlled to be equal to a predetermined tensile force.

[0006] According to an exemplary embodiment of the present disclosure, the speed difference between the first active roller, which propels the cable forward, and the second active roller, which propels the cable forward, is equal to a predetermined tensile force if the tensile force exerted on the cable is equal to the predetermined tensile force and the thrust force exerted on the cable by the floating roller is equal to a predetermined thrust force.

[0007] According to another exemplary embodiment of the present disclosure, the first active roller and the second active roller are located at the same height position.

[0008] According to another exemplary embodiment of the present disclosure, the floating roller is located in a middle position between the first active roller and the second active roller.

[0009] According to a further exemplary embodiment of the present disclosure, the cable tension control device further comprises a sensor device mounted on the actuator, which is suitable for detecting an amount of movement of the floating roller in the vertical direction.

[0010] According to another exemplary embodiment of the present disclosure, the cable tension control device further comprises a control device suitable for adjusting and controlling a drive force of the actuator according to the amount of movement detected by the sensor, so that the thrust force exerted on the cable by the floating roller is equal to the predetermined thrust force.

[0011] According to another exemplary embodiment of the present disclosure, wherein the first drive and the second drive are electric motors.

[0012] According to another exemplary embodiment of the present disclosure, wherein the actuator is an air cylinder, a hydraulic cylinder or a servo motor.

[0013] In various exemplary embodiments of the present disclosure, the tensile force exerted on the cable is kept constant, which ensures the stable transmission of the cable.

[0014] Further features and benefits of the present disclosure will become apparent from the following description of the present disclosure with reference to the accompanying drawings and may contribute to a comprehensive understanding of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other features of the present disclosure are further described by the detailed description of exemplary embodiments thereof with reference to the accompanying drawings, in which Fig. 1 is an illustrative view of a cable voltage control device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF PREFERRED EXECUTION FORMS

[0016] Exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, the same reference numerals referring to the same elements. However, the present disclosure can be embodied in many different forms and should not be interpreted as being limited to the embodiment set forth herein; rather, these embodiments are provided in such a way as to ensure that the present disclosure is thorough and complete and that the concept of the disclosure is fully conveyed to those skilled in the art in this field.

[0017] The following detailed description includes numerous specific details for explanatory purposes, to facilitate a thorough understanding of the disclosed embodiments. However, it will be clear that one or more embodiments can also be implemented without these specific details. In other cases, known structures and devices are shown schematically to simplify the drawing.

[0018] According to a general concept of the present disclosure, a cable tension control device is provided, comprising: at least one pair of first active rollers configured such that a cable is clamped between them; a first drive configured to rotate the first active rollers in order to advance the cable; at least one pair of second active rollers configured such that the cable is clamped between them at a downstream position of the first active rollers; a second drive configured to rotate the second active rollers in order to advance the cable; a floating roller arranged between the first active roller and the second active roller and configured to exert a thrust force on the cable;and an actuator designed to drive the floating pulley so that it moves vertically to adjust the thrust exerted by the floating pulley on the cable. The cable tension control device is designed to control a tensile force exerted on the cable by controlling the thrust exerted by the floating pulley on the cable and a speed differential between a first speed at which the first active pulleys advance the cable and a second speed at which the second active pulleys advance the cable, such that the tensile force exerted on the cable can be controlled to be equal to a predetermined tensile force.

[0019] Fig. Figure 1 is an illustrative view of a cable voltage control device according to an exemplary embodiment of the present disclosure.

[0020] As in Fig. As shown in Figure 1, the cable tension control device in one embodiment mainly comprises at least one pair of first active rollers (or referred to as front drive rollers) 10, a first drive (not shown), at least one pair of second active rollers (or referred to as rear drive rollers) 20, a second drive (not shown), a floating roller 30, and an actuator 40. The at least one pair of first active rollers 10 is configured such that a cable 1 can be clamped between them. The first drive is configured to rotate the first active rollers 10 to advance the cable 1. The at least one pair of second active rollers 20 is configured to clamp the cable 1 between them at a downstream position of the first active rollers 10. The second drive is configured to rotate the second active rollers 20 to advance the cable 1.The floating roller 30 is positioned between the first active roller 10 and the second active roller 20 and is configured to exert a thrust force on the cable 1. The actuator 40 is designed to drive the floating roller 30 into a vertical movement in order to adjust the thrust force exerted by the floating roller 30 on the cable 1.

[0021] As in Fig. As shown in embodiments of the present disclosure, the cable tension control device is designed to control a tensile force exerted on the cable 1 by controlling the thrust force exerted on the cable 1 by the floating roller 30 and by controlling a speed difference between a first speed at which the first active rollers 10 propel the cable 1 forward and a second speed at which the second active rollers 20 propel the cable 1 forward, so that the tensile force T exerted on the cable 1 can be controlled to be equal to a predetermined tensile force.

[0022] As in Fig. As shown in an exemplary embodiment of the present disclosure, the first active rollers 10 advance the cable 1 at a first speed V1; the second active rollers 20 advance the cable 1 at a second speed V2. The first speed V1 is greater than the second speed V2. In the present disclosure, the tensile force T exerted on the cable 1 can be kept constant by controlling the speed difference between the first speed V1 and the second speed V2 and by controlling the thrust force F exerted on the cable 1 by the floating roller 30.

[0023] As in Fig. As shown in Figure 1, in an exemplary embodiment of the present disclosure, if the tensile force T exerted on the cable 1 is equal to the predetermined tensile force and if the thrust force F exerted on the cable 1 by the floating roller 30 is equal to a predetermined thrust force, the velocity difference between the first active rollers 10, which propel the cable 1 forward, and the second active rollers 20, which propel the cable 1 forward, i.e., the velocity difference between the first velocity V1 and the second velocity V2, will be equal to a predetermined velocity difference.

[0024] As in Fig. As shown in Figure 1, in one embodiment the first active roller 10 and the second active roller 20 are at the same height position, and the floating roller 30 is in a middle position between the first active roller 10 and the second active roller 20.

[0025] As in Fig. As shown in Figure 1, in one embodiment the cable tension control device further comprises a sensor (not shown). The sensor can be provided on the actuator 40. The sensor is designed to detect the amount of movement of the floating roller 30 in the vertical direction.

[0026] As in Fig. As shown in one embodiment, the cable tension control device further comprises a controller (not shown). The controller is designed to adjust and control a drive force of the actuator 40 according to the amount of movement detected by the sensor, such that the thrust force F exerted by the floating roller 30 on the cable 1 is equal to the specified thrust force.

[0027] As in Fig. As shown in 1, in one embodiment the first drive and the second drive can be electric motors.

[0028] As in Fig. As shown in Figure 1, the actuator 40 can be an air cylinder, a hydraulic cylinder or a servo motor in one embodiment.

[0029] The following describes a process for adjusting the tensile force exerted on cable 1 to the specified tensile force with reference to Fig. 1 described.

[0030] First, the first active rollers 10 clamp the cable 1 in between, and the second active rollers 20 clamp the cable in between;

[0031] Then the predetermined thrust force is exerted on the cable 1 by the floating roller 30;

[0032] Then the first speed at which the first active rollers (the front active rollers) 10 transport the cable 1 forward is set so that it is equal to a predetermined cable conveying speed;

[0033] Finally, the second speed at which the second active rollers (the rear active rollers) 20 propel the cable 1 forward is adjusted so that the speed difference between the first speed of the first active rollers and the second speed of the second active rollers 20 is equal to the predetermined speed difference.

[0034] This ensures that the tensile force exerted on cable 1 is equal to the specified tensile force.

[0035] It should be clear to those skilled in the art that the above embodiments serve for illustration and are not limiting. For example, many modifications to the above embodiments can be made by those skilled in the art, and various features described in different embodiments can be freely combined without conflicting in configuration or principle.

[0036] Although a large number of exemplary embodiments have been shown and described, it would be desirable for the person skilled in the art if various changes or modifications could be made to these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

[0037] As used here, a singular element followed by the word "a" or "an" should be understood as not excluding the plurality of elements or steps mentioned, unless such exclusion is expressly stated. Furthermore, references to "an embodiment" of the present disclosure are not to be interpreted as excluding the existence of additional embodiments that also include the features mentioned. Moreover, embodiments that "comprise" or "have" an element or a plurality of elements with a particular property may include additional such elements that do not have that property, unless expressly stated otherwise.

Claims

[1] Cable voltage control device comprising: at least one pair of first active rollers (10) configured such that a cable (1) is clamped between them; a first drive designed to drive the first active rollers (10) to rotate in order to propel the cable (1) forward; at least one pair of second active rollers (20) configured to clamp the cable (1) between them at a downstream position of the first active rollers (10); a second drive designed to drive the second active rollers (20) to rotate in order to propel the cable (1) forward; a floating roller (30) arranged between the first active roller (10) and the second active roller (20) and configured to exert a thrust force on the cable (1); and an actuator (40) suitable for moving the floating roller (30) vertically in order to adjust the thrust force exerted by the floating roller (30) on the cable (1), wherein the cable tension control device is designed to control a tensile force (T) exerted on the cable (1) by controlling the thrust force (F) exerted on the cable (1) by the floating pulley (30) and by controlling a speed difference between a first speed at which the first active pulleys (10) propel the cable (1) forward and a second speed at which the second active pulleys (20) propel the cable (1) forward such that the tensile force exerted on the cable (1) can be controlled to be equal to a predetermined tensile force. [2] Cable tension control device according to claim 1, wherein, when the tensile force (T) exerted on the cable (1) is equal to the predetermined tensile force and the thrust force (F) exerted on the cable (1) by the floating roller (30) is equal to a predetermined thrust force, the velocity difference between the first active roller (10) conveying the cable and the second active roller (20) conveying the cable is equal to a predetermined velocity difference. [3] Cable tension control device according to claim 1 or 2, wherein the first active roller (10) and the second active roller (20) are arranged in the same height position. [4] Cable tension control device according to claim 3, wherein the floating roller (30) is arranged at a central position between the first active roller (10) and the second active roller (20). [5] Cable tension control device according to claim 2, wherein the cable tension control device further comprises a sensor device which is provided on the actuator (40) and is suitable for detecting an amount of movement of the floating roller (30) in a vertical direction. [6] Cable tension control device according to claim 5, wherein the cable tension control device further comprises a control which is suitable for adjusting and controlling a drive force of the actuator (40) according to the amount of movement detected by the sensor, so that the thrust force (F) exerted on the cable (1) by the floating roller (30) is equal to the predetermined thrust force. [7] Cable voltage control device according to claim 1 or 2, wherein the first drive and the second drive are electric motors. [8] Cable tension control device according to claim 1 or 2, wherein the actuator (40) is an air cylinder, a hydraulic cylinder or a servo motor. [9] Cable tension control device according to claim 2, wherein when the tensile force (T) exerted on the cable (1) is equal to the predetermined tensile force, the first speed is greater than the second speed and the first speed is equal to a predetermined cable conveying speed.

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