Cable pull-in device and method for operating a cable pull-in device

Abstract

The present invention relates to a cable pulling device (10a; 10b; 10c; 10d) for transmitting drive motion to a traction device (14a; 14b; 14c; 14d), having at least one conveying unit (12a; 12b; 12c; 12d) for providing drive motion, and having a traction device (14a; 14b; 14c; 14d) configured for cable transport. It is proposed that the cable pulling device has a linearly guided carriage unit (16a; 16b; 16c; 16d) capable of oscillating reciprocating motion, wherein the carriage unit (16a; 16b; 16c; 16d) is configured to transmit driving motion to the traction device (14a; 14b; 14c; 14d) in a first traction device direction (30a; 30b; 30c; 30d), and not transmit driving motion to the traction device (14a; 14b; 14c; 14d) in a second traction device direction (32a; 32b; 32c; 32d) opposite to the first traction device direction (30a; 30b; 30c; 30d).

Description

Technical Field

[0001] The present invention relates to a cable pulling device for transmitting driving motion to a traction device and a method for operating the cable pulling device. Background Technology

[0002] A cable pulling device for transmitting driving motion to a traction device has been proposed, which has at least one conveying unit for providing driving motion and a traction device for cable transport. Summary of the Invention

[0003] The present invention relates to a cable pulling device for transmitting driving motion to a traction device, having at least one conveying unit for providing driving motion and having a traction device provided for cable transport.

[0004] It is proposed that the cable pulling device has a linearly guided carriage unit capable of oscillating reciprocating motion, wherein the carriage unit is configured to transmit drive motion to the traction device in a first traction device direction and not transmit drive motion to the traction device in a second traction device direction opposite to the first traction device direction.

[0005] According to the configuration of the cable pull-in device of the present invention, an advantageously compact cable pull-in device can be provided. It can advantageously provide non-rotating delivery of the traction device. It can provide advantageous characteristics regarding user safety. It can advantageously transfer high traction force to the traction device. It advantageously eliminates unrotating of the traction device. It advantageously achieves high robustness and / or long service life of the cable pull-in device. It advantageously provides a particularly reliable pull-in and rewind mechanism.

[0006] The cable pulling device is particularly configured as a cable pulling system and / or a rope pulling system. The cable pulling device is particularly equipped with at least one function for pulling in cables, cable strands, or the like by means of a pulling device. Furthermore, the cable pulling device may also be configured for pulling in other elongated components, such as hoses, wires, chains, or the like. The cable pulling device can be configured, for example, as a battery-operated cable pulling device, which particularly has an energy storage interface, preferably a battery pack interface, for connection to an energy storage device, preferably a battery pack. It is conceivable that the energy storage device is part of the cable pulling device.

[0007] The cable pulling device has at least the conveying unit and at least the traction device. The conveying unit includes a carriage unit, a transmission unit, and a drive unit. The conveying unit is configured to convey the traction device in two opposite conveying directions. The drive unit is configured to provide driving motion to operate the conveying unit. Preferably, the energy storage interface is configured to supply electrical energy to the driving motion. Preferably, the energy storage interface and the drive unit are electrically connected to each other. The drive unit is preferably configured to drive the carriage unit.

[0008] The conveying unit is motor-driven. Preferably, the drive unit is constructed as an electric motor, especially a stepper motor. The transmission unit is configured to convert rotary motion into linear motion. The transmission unit is configured to convert rotary motion into translational motion by means of a crank mechanism and a push rod. The conveying unit is particularly configured to at least pull and push the traction device. Typically, the conveying unit is configured to both pull and push the traction device.

[0009] The transport direction preferably extends parallel to the longitudinal extension direction of the traction device. The traction device can be constructed as a stranded polymer, a steel helix, or a twisted fiberglass strip or the like. Preferably, the cross-section of the traction device is at least substantially constant along its longitudinal extension. In particular, the traction device can be constructed as a multi-piece structure, for example, as a thread woven from single strands or as a stranded wire or rope. Furthermore, the traction device can be constructed from different materials, for example, at least partially from plastic (such as nylon), at least partially from metal (such as elastic spring steel), at least partially from fiberglass, etc.

[0010] The traction device has a first traction device direction. The first traction device direction is configured such that the traction device extends from the front side of the cable pulling device and / or exits. The traction device also has a second traction device direction. The second traction device direction is configured as the return direction and / or traction direction of the traction device. The return direction can be, for example, a traction and transport direction.

[0011] "Driving motion" should be understood as controlled mechanical motion performed by a drive unit. This driving motion is designed to be transmitted to the carriage unit. Preferably, this driving motion drives the traction device in the direction of the first traction device. Preferably, this driving motion does not drive in the direction of the second traction device. Preferably, the carriage unit has a freewheel in the direction of the second traction device. "Designed for" should be understood in particular as designed and / or equipped. An object is designed for a specific function, and should be understood in particular as the object satisfying and / or performing that specific function in at least one application and / or operating state.

[0012] Furthermore, it is proposed that the carriage unit has at least one sleeve element, wherein the sleeve element form-lockingly surrounds the traction device. This can advantageously provide a safe and reliable transport unit. The "sleeve element" should be understood as a hollow body, preferably at least substantially rotationally symmetric and / or cylindrical, configured to guide and / or support and / or protect the traction device. The sleeve element has an internal profile. The sleeve element is configured to transmit drive motion to the traction device in the direction of the first traction device. "Form-locking" should be understood in particular as the mutually abutting surfaces of the form-locking members applying a retaining force acting in the normal direction of the surfaces. In particular, the sleeve element is in geometric engagement with the traction device.

[0013] Furthermore, it is proposed that the sleeve element is rotatably supported in the carriage unit about its central longitudinal axis in only one of two rotational directions by means of at least one bearing element. Advantageously, this allows for particularly reliable transmission of drive motion to the traction device. Advantageously, it provides high force transmission. The sleeve element is supported in the carriage unit by means of the at least one bearing element. The sleeve element is configured to be rotatably supported in one rotational direction. The sleeve element is rotatably supported about its central longitudinal axis in one rotational direction. Preferably, the bearing element is configured to block rotation of the sleeve element about its central longitudinal axis in one rotational direction. Preferably, the bearing element is configured to allow rotation about its central longitudinal axis in the opposite rotational direction. Alternatively, the at least one bearing element may be configured to block rotation of the sleeve element in a second rotational direction.

[0014] Furthermore, it is proposed that the sleeve element has at least partially a single or multiple helical internal geometry, which is configured to form a form-lock with the traction device. Advantageously, high traction force can be transferred to the traction device. Particularly advantageously, unwinding and / or untwisting of the traction device can be prevented. The sleeve element is configured to receive the traction device in a form-locking manner. The internal geometry of the sleeve element is constructed as a negative mold of the external geometry of the traction device. Preferably, the internal geometry is configured to prevent slippage between the sleeve element and the traction device during force transmission and / or idling. The internal geometry can be configured as a single helical geometry, especially as a thread. Alternatively, the internal geometry can be configured as a multiple helical geometry, especially double or multiple strands.

[0015] Furthermore, it is proposed that the sleeve element is configured to transmit the translational movement of the carriage unit in the direction of the first traction device to the traction device. An oscillating drive for the cable pull-in device is advantageously provided, which is advantageously configured to achieve targeted impact movement in the empty pipe, thereby resolving blockages and creating additional space for efficient and smooth introduction of the traction device. Preferably, the bearing element is configured to block the rotation of the sleeve element as the carriage unit moves toward the first traction device. Preferably, the sleeve element is configured during the movement of the carriage unit toward the first traction device to transmit at least substantially all of the travel movement of the carriage unit to the traction device. In particular, the sleeve element is configured to push or pull the traction device by a fixed length. The sleeve element is configured to be blocked in the bearing element during the movement of the carriage unit toward the first traction device. This blocking can be achieved by a blocking element fixedly connected to the sleeve element for this purpose. Alternatively, the bearing element can be configured to allow only rotation of the bearing components constituting the bearing in one direction of operation. In particular, the bearing element can be constructed as a freewheel bearing, a ratchet system, a wedge clutch, or a roller freewheel bearing.

[0016] Furthermore, it is proposed that the sleeve element is configured to translate along the direction of the second traction device via rotational motion about the traction device, wherein the sleeve element does not transmit drive motion to the traction device. Advantageously, unwinding and / or untwisting of the traction device can be avoided. Particularly advantageously, the return or retraction of the carriage unit can be achieved without torsion or twisting of the traction device. Preferably, the bearing element is configured to rotatably support the sleeve element as the carriage unit moves toward the second traction device. Preferably, the sleeve element is configured to rotate about the traction device in the direction of the second traction device.

[0017] Furthermore, it is proposed that the carriage unit has an additional drive unit, which is configured to rotatably drive the sleeve element during movement of the carriage unit in the direction of the second traction device, and to anti-rotatably secure the sleeve element in the carriage unit during movement of the carriage unit in the direction of the first traction device. Advantageously, continuous drive of the cable pull-in device can be provided by the additional drive unit. Advantageously, the extension and retraction time can be substantially shortened, especially halved. Advantageously, reliability and user safety can be improved by the additional drive unit. Preferably, the additional drive unit is configured to rotatably drive the sleeve element during the return stroke of the carriage unit. This additional drive unit is configured to secure the sleeve element during movement of the carriage unit in the direction of the first traction device. This additional drive unit is configured to anti-rotatably support the sleeve element during movement of the carriage unit in the direction of the first traction device. This additional drive unit preferably has an additional motor, especially an additional electric motor, especially an electric stepper motor. Alternatively, all other drive forms that are considered meaningful by those skilled in the art are also conceivable. Furthermore, this additional drive unit has at least one additional transmission unit. The additional transmission unit is configured to transmit additional drive motion to the sleeve element. This additional transmission unit is configured to provide anti-rotational support to the sleeve element during movement of the carriage element toward the first traction device.

[0018] Furthermore, it is proposed that the conveying unit has at least one additional carriage unit with an additional sleeve element, said additional sleeve element being configured to transmit translational motion to the traction device when the carriage unit with the sleeve element is not transmitting drive motion to the traction device. Advantageously, uninterrupted drive of the cable pull-in device can be provided. Advantageously, continuous drive of the cable pull-in device can be provided by the additional conveying unit. Advantageously, the extension and retraction time can be at least substantially shortened, and in particular halved. Advantageously, reliability and user safety can be improved by the additional conveying unit. Preferably, the additional carriage unit is configured to drive the traction device during the return motion of the other carriage unit. Preferably, the additional carriage unit has a structure mirror-symmetrical to the other carriage unit. Preferably, the additional carriage unit is configured to run in the opposite direction to the other carriage unit. Preferably, the drive unit is configured to drive both the other carriage unit and the additional carriage unit.

[0019] Furthermore, it is proposed that the carriage unit has at least one spring-returning latching element configured to transmit drive motion to the traction device in a first traction device direction and to allow the at least one spring-returning latching element to slide along the traction device in a second traction device direction without transmitting drive motion to the traction device. Advantageously, high force transmission to the traction device can be provided. Advantageously, a low-friction and particularly reliable device can be provided. Advantageously, non-rotational transport of the traction device can be provided. Advantageously, high traction force can be transmitted to the traction device. Advantageously, unrotation of the traction device can be prevented. Advantageously, high robustness and / or long lifespan of the cable pull-in device can be achieved. Preferably, the carriage unit has at least one latching element configured to transmit drive motion to the traction device in the first traction device direction. Preferably, the carriage unit has a latch pair formed by at least two latching elements arranged on opposite sides of the traction device. Alternatively, it is also conceivable that a latch pair consists of three latching elements. The latching element has a bevel, which is configured to allow the latching element to slide over the traction device as the carriage unit moves toward the second traction device. The latching element has an arcuate edge on the side pointing toward the traction device. The latching element has an arcuate bevel on the side pointing toward the traction device. These latching elements are configured such that they at least partially form-fit around the traction device. Preferably, the latching element has a spring return mechanism. The latching element has a spring element configured to apply a return force to the latching element. The geometry of the latching element is configured to form-fit the latching element into the wedge-shaped recess of the traction device as the carriage unit moves toward the first traction device, and to transmit the relative movement between the carriage unit and the traction device. The at least one latching element is configured to engage in the geometry of the traction device in a resting position and be deflected by the applied traction force overcoming the spring force.

[0020] Furthermore, it is proposed that the traction device is formed by a series of multiple rotationally symmetric, truncated cone-shaped traction device elements. Preferably, the traction device is constructed as a series of wedge-shaped chamfered traction device elements arranged at regular intervals along the flexible carrier structure. These traction device elements have lateral recesses in a first traction device direction, which are provided for forming at least a partial form-locking connection with a latching element. These traction device elements have a wedge-shaped chamfered geometry, which is provided to ensure maximum force transmission in the first traction device direction and to allow at least one latching element to perform low-friction sliding movement in the opposite traction device direction in a second traction device direction.

[0021] Furthermore, it is proposed that, in at least one method step, the driving force is transmitted to the traction device. Advantageously, a device can be provided that can transmit high traction force to the traction device, wherein unwinding of the traction device is excluded. Advantageously, high robustness and long lifespan of the cable pull-in device can be provided. Advantageously, a particularly reliable pull-in and rewind mechanism can be provided. The conveying unit provides the driving motion and transmits it to the traction device. The driving motion is provided by a drive unit, in particular a motor, and transmitted to the carriage unit by means of a transmission unit. Preferably, in at least one method step, the driving motion is transmitted to the carriage unit by means of a transmission unit. The carriage unit transmits the driving motion to the traction device in the direction of the first traction device. Preferably, the driving motion is transmitted to the traction device only in the direction of the first traction device. No driving motion is transmitted to the traction device in the direction of the second traction device. In at least one additional method step, a sleeve element rotatably supported in the carriage unit can slide along the traction device in the direction of the second traction device.

[0022] The cable pull-in device according to the present invention should not be limited to the applications and embodiments described above. In particular, in order to achieve the functional mode described herein, the cable pull-in device according to the present invention may have a different number of individual elements, components, and units, as well as method steps, than those mentioned herein. Furthermore, for the value ranges given in this disclosure, values ​​within the mentioned limits should also be considered as disclosed and can be used arbitrarily. Attached Figure Description

[0023] Other advantages are illustrated in the following figures. Four embodiments of the invention are shown in the figures. The figures, description, and claims contain numerous features in combination. Those skilled in the art will also practically consider these features individually and generalize them into other meaningful combinations.

[0024] It shows: Figure 1 : A schematic diagram of a cable pulling device with a conveying unit, the conveying unit having a carriage unit and a drive unit, the carriage unit including at least one sleeve element and connected to a traction device. Figure 2 Sleeve elements with a multi-helical internal geometry. Figure 3 : Schematic diagram of an alternative cable pull-in device with an additional drive unit. Figure 4 : A schematic diagram of an alternative cable pull-in device with an additional carriage unit, and Figure 5 : Schematic diagram of an alternative cable pull-in device with at least one spring-return latching element. Detailed Implementation

[0025] Figure 1A schematic diagram of a cable pull-in device 10a is shown. The cable pull-in device 10a is configured as a cable pulling system. The cable pull-in device 10a is configured for pulling in cables or similar objects. The cable pull-in device 10a is configured as a battery-powered cable pull-in device 10a. The cable pull-in device 10a has a conveying unit 12a. The cable pull-in device 10a has a traction device 14a. The conveying direction of the conveying unit 12a extends parallel to the longitudinal extension direction of the traction device 14a. The traction device 14a is configured for conveying in a first traction device direction 30a. The traction device 14a is configured for outputting in the first traction device direction 30a. The traction device 14a is configured for conveying in a second traction device direction 32a. The traction device 14a is configured for pulling the cable in the second traction device direction 32a. The first traction device direction 30a is configured as the outgoing direction. The first traction device direction 30a is configured as the direction in which the traction device 14a extends from and / or outputs from the front side of the cable pull-in device 10a. The second traction device direction 32a is set as the return direction. The second traction device direction 32a is set as the return direction and / or traction direction of the traction device 14a. The traction device 14a is constructed as a multi-strand steel cable 72a. Alternatively, the traction device 14a may also be constructed as a stranded polymer, steel helix, or twisted fiberglass tape. The conveying unit 12a has a transmission unit 18a. The conveying unit 12a has a drive unit 20a. The conveying unit 12a has a carriage unit 16a. The drive unit 20a is configured to provide driving motion to operate the conveying unit 12a. The drive unit 20a is preferably configured to drive the carriage unit 16a in at least one traction device direction. The transmission unit 18a is configured to convert the rotational motion generated by the drive unit 20a into linear motion. The transmission unit 18a has a crank mechanism 22a. The transmission unit 18a has a push rod 24a. The driving motion is configured to be transmitted to the carriage unit 16a. The driving motion is configured to be transmitted to the carriage unit 16a via the transmission unit 18a. The carriage unit 16a is configured to receive the traction device 14a. The carriage unit 16a is configured to support the traction device 14a. The carriage unit 16a is configured to transmit drive motion to the traction device 14a. The carriage unit 16a transmits drive motion to the traction device 14a in a first traction device direction 30a. The carriage unit 16a is configured not to transmit drive motion to a second traction device direction 32a. The carriage unit 16a has a freewheel in the second traction device direction. The conveying unit 12a has two bearing elements 26a and 28a. The carriage unit 16a has bearing elements 26a and 28a. The bearing elements 26a and 28a are constructed as ball bearings or deep groove ball bearings. The bearing elements 26a and 28a support the sleeve element 34a. The bearing elements 26a and 28a receive the sleeve element 34a. The sleeve element 34a receives the traction device 14a in a form-locking manner.The sleeve element 34a is form-fitted around the traction device 14a. The sleeve element 34a has a central longitudinal axis 38a. The sleeve element 34a is rotatably supported in bearing elements 26a, 28a about the central longitudinal axis 38a in one rotational direction. The sleeve element 34a is anti-rotationally supported about the central longitudinal axis 38a in the opposite rotational direction. The sleeve element 34a transmits drive motion to the traction device 14a in the first traction device direction 30a. The sleeve element 34a is rotatably supported about the central longitudinal axis 38a in one rotational direction. The bearing elements 26a, 28a block rotation of the sleeve element 34a in one rotational direction. Alternatively, the carriage unit 16a is provided to block rotation of the sleeve element 34a in one rotational direction. The sleeve element 34a transmits at least substantially all of the travel motion of the carriage unit 16a to the traction device 14a during movement of the carriage unit 16a in the first traction device direction 30a. The sleeve element 34a moves the traction device 14a by a fixed length. Alternatively, the sleeve element 34a is configured to pull the traction device 14a by a fixed length. The sleeve element 34a is blocked in the bearing elements 26a and 28a during the movement of the carriage unit 16a toward the first traction device direction 30a. The sleeve element 34a has a blocking element 40a. The blocking element 40a prevents the sleeve element 34a from rotating about the central longitudinal axis 38a. The blocking element 40a is fixedly connected to the sleeve element 34a. The blocking element 40a can be configured as a freewheel. Alternatively, the carriage unit 16a has a blocking element 40a. Alternatively, it is conceivable that the bearing elements 26a and 28a have a blocking element 40a. The bearing elements 26a and 28a are configured such that they only allow rotation of the bearing components constituting the bearing in one direction of operation. Alternatively, the bearing elements 26a and 28a are configured as freewheel bearings. The sleeve element 34a is configured for translational movement along the direction 32a of the second traction device. The sleeve element 34a is also configured for rotational movement about the traction device 14a in the direction 32a of the second traction device. The sleeve element 34a does not transmit drive motion to the traction device 14a in the direction 32a of the second traction device. Bearing elements 26a and 28a rotatably support the sleeve element 34a as the carriage unit 16a moves towards the direction of the second traction device. Preferably, the sleeve element 34a rotates about the traction device 14a in the direction 32a of the second traction device. Preferably, the sleeve element 34a is configured for sliding along the traction device 14a in the direction 32a of the second traction device.

[0026] Figure 2A schematic diagram of the sleeve element 34a is shown. The sleeve element 34a has an internal profile 36a. The sleeve element 34a has a multi-helical internal geometry 42a. This multi-helical internal geometry 42a forms a shape-lock with the traction device 14a. The internal geometry 42a receives the traction device 14a in a shape-locked manner. The internal geometry 42a is constructed as a negative mold form of the external geometry 44a of the traction device 14a. The traction device 14a has the external geometry 44a of the steel cable 72a.

[0027] exist Figures 3 to 5 Three other embodiments of the invention are shown below. The following description and drawings are essentially limited to the differences between the embodiments, wherein, with respect to components with the same reference numerals, especially those having the same reference numerals, reference can also be made in principle to the drawings and / or descriptions of other embodiments, especially... Figures 1 to 2 To distinguish the embodiments, the letter 'a' is placed... Figures 1 to 2 Following the reference numerals in the accompanying drawings of the Chinese embodiments. Figures 3 to 5 In the embodiment, the letter 'a' is replaced by letters 'b' through 'd'.

[0028] Figure 3A schematic diagram of an alternative configuration of the cable pulling device 10b in a second embodiment with an additional drive unit 46b is shown. The cable pulling device 10b has a conveying unit 12b. The cable pulling device 10b has a traction device 14b. The conveying direction of the conveying unit 12b extends parallel to the longitudinal extension direction of the traction device 14b. The traction device 14b is configured to convey the cable in a first traction device direction 30b. The traction device 14b pulls the cable in a second traction device direction 32b. The traction device 14b is constructed as a multi-strand steel cable 72b. The conveying unit 12b has a transmission unit 18b. The conveying unit 12b has a drive unit 20b. The conveying unit 12b has a carriage unit 16b. The drive unit 20b is configured to provide drive motion to operate the conveying unit 12b. The drive unit 20b drives the carriage unit 16b in at least one traction device direction. The transmission unit 18b converts the rotational motion generated by the drive unit 20b into linear motion. The transmission unit 18b has a crank mechanism 22b. The transmission unit 18b has a push rod 24b. The carriage unit 16b receives the traction device 14b. The carriage unit 16b transmits drive motion to the traction device 14b in the first traction device direction 30b. The carriage unit 16b transmits drive motion to the second traction device direction 32b. The carriage unit 16b has a freewheel in the second traction device direction 32b. The cable pull-in device 10b has another carriage unit 16b. The cable pull-in device 10b has another drive unit 46b. The other drive unit 46b rotatably drives the sleeve element 34b during the movement of the carriage unit 16b towards the second traction device direction 32b. The other drive unit 46b anti-rotates the sleeve element 34b during the movement of the carriage unit 16b towards the first traction device direction 30b. The other drive unit 46b rotatably drives the sleeve element 34b during the return stroke of the carriage unit 16b. The additional drive unit 46b fixes the sleeve element 34b during the movement of the carriage unit 16b toward the first traction device direction 30b. The additional drive unit 46b provides anti-rotational support for the sleeve element 34b during this movement. The additional drive unit 46b has a motor 74b. The motor 74b is preferably configured as an electric motor. Furthermore, the additional drive unit 46b has at least one additional transmission unit 48b. The additional transmission unit 48b transmits additional drive motion to the sleeve element 34b. The additional transmission unit 48b provides anti-rotational support for the sleeve element 34b during the movement of the carriage element 16b toward the first traction device direction 30b. The sleeve element 34b is configured to transmit drive motion to the traction device 14b in the first traction device direction 30b. The sleeve element 34b transmits translational motion of the carriage unit 16b in the first traction device direction 30b to the traction device 14b.

[0029] Figure 4A schematic diagram of an alternative configuration of the cable pull-in device 10c in the third embodiment is shown. The cable pull-in device 10c has a conveying unit 12c. The cable pull-in device 10c has a traction device 14c. The conveying direction of the conveying unit 12c extends parallel to the longitudinal extension direction of the traction device 14c. The conveying unit 12c has a transmission unit 18c. The conveying unit 12c has a drive unit 20c. The conveying unit 12c has a carriage unit 16c. The drive unit 20c is configured to provide drive motion to operate the conveying unit 12c. The drive unit 20c drives the carriage unit 16c in at least one traction device direction. The transmission unit 18c converts the rotational motion generated by the drive unit 20c into linear motion. The transmission unit 18c has a crank mechanism 22c. The transmission unit 18c has a push rod 24c. The transmission unit 18c has an additional push rod 84c. The carriage unit 16c receives the traction device 14c. Carrier unit 16c transmits drive motion to traction device 14c in the first traction device direction 30c. Carrier unit 16c does not transmit drive motion to the second traction device direction 32c. Carrier unit 16c has a freewheel in the second traction device direction 32c. Cable pull-in device 10c has another carriage unit 16c. Conveying unit 12c has two bearing elements 26c and 28c. Carrier unit 16c has bearing elements 26c and 28c. Bearing elements 26c and 28c are constructed as ball bearings or deep groove ball bearings. Bearing elements 26c and 28c support sleeve element 34c. Bearing elements 26c and 28c receive sleeve element 34c. Bearing elements 26c and 28c block the rotation of sleeve element 34c in one rotational direction. Cable pull-in device 10c has another carriage unit 50c. Conveying unit 12c has another carriage unit 50c. The additional carriage unit 50c has an additional sleeve element 52c. When the carriage unit 16c with sleeve element 34c does not transmit drive motion to the traction device 14c, the additional sleeve element 52c transmits translational motion to the traction device 14c. The additional carriage unit 50c drives the traction device 14c when the carriage unit 16c is in the return motion. The additional carriage unit 50c has a structure that is mirror-symmetrical to the carriage unit 16c. The additional carriage unit 50c is configured to run in the opposite direction to the carriage unit 16c. The drive unit 20c drives the carriage unit 16c and the additional carriage unit 50c. The additional sleeve element 52c pushes the traction device 14c by a fixed length. Alternatively, the additional sleeve element 52c is configured to pull the traction device 14c by a fixed length. The additional carriage unit 50c has two additional bearing elements 76c and 78c. The additional sleeve element 52c is blocked in additional bearing elements 76c, 78c during the movement of the additional carriage unit 50c toward the first traction device 30c. The additional sleeve element 52c has an additional blocking element 80c.An additional blocking element 80c is provided to enable the rotation of the additional sleeve element 52c about the central longitudinal axis 82c when the additional carriage unit 50c moves toward the second traction device direction 32c. The additional blocking element 80c is fixedly connected to the additional sleeve element 52c. The additional sleeve element 52c is provided for translational movement along the first traction device direction 30c. The additional sleeve element 52c is rotatably supported around the traction device 14c in the second traction device direction 32c. The additional sleeve element 52c is provided for transmitting drive motion to the traction device 14c in the first traction device direction 30c. Additional bearing elements 76c and 78c are provided to fixally support the sleeve element 52c when the carriage unit 50c moves toward the first traction device direction 30c. When the sleeve element 34c is rotatably supported, the additional sleeve element 52c is anti-rotationally supported. When the sleeve element 34c is blocked, the additional sleeve element 52c is rotatably supported.

[0030] Figure 5 A schematic diagram of an alternative configuration of the cable pull-in device 10d in the fourth embodiment is shown. The cable pull-in device 10d has a conveying unit 12d. The conveying unit 12d has a carriage unit 16d. The carriage unit 16d has a latch pair. The latch pair is formed by two latching elements 54d and 56d. The latching elements 54d and 56d are arranged on the opposite side of the traction device 14d. Alternatively, it is conceivable that a latch pair consists of three latching elements. The latching element 54d has an arcuate bevel 60d on the side pointing towards the traction device. This bevel 60d is provided to allow the latching element 54d to slide over the traction device 14d when the carriage unit 16d moves toward the second traction device direction 32d. The latching element 54d has an arcuate edge 62d. The latching elements 54d, 56d, and 58d are configured such that they partially and shape-lockingly surround the traction device 14d. The latching element 54d has a spring return device 64d. The spring return device 64d applies a return force to the latching element 54d. The latching element 54d is configured to form-fit into the wedge-shaped recess of the traction device 14d. The latching element 54d transmits the relative movement between the carriage unit 16d and the traction device 14d. The latching element 54d is configured to fit into the geometry of the traction device 14d in a rest position. The latching element 54d is configured to be deflected by an action force against the spring return device 64d. The traction device 14d is formed by a series of multiple rotationally symmetric, frustoconical traction device elements 66d and 68d. The traction device element 66d has a side recess 70d in the first traction direction 30d. The traction device element 66d has a wedge-shaped chamfered geometry.

[0031] The cable pull-in device according to the present invention should not be limited to the applications and embodiments described above. In particular, in order to achieve the functional mode described herein, the cable pull-in device according to the present invention may have a different number of individual elements, components, and units, as well as method steps, than those mentioned herein. Furthermore, for the value ranges given in this disclosure, values ​​within the mentioned limits should also be considered as disclosed and can be used arbitrarily.

Claims

1. A cable pulling device (10a; 10b; 10c; 10d) for transmitting driving motion to a traction device (14a; 14b; 14c; 14d), comprising: At least one conveying unit (12a; 12b; 12c; 12d) is used to provide the driving motion. Traction devices (14a; 14b; 14c; 14d), said traction devices being configured for cable transport. characterized in that A linearly guided carriage unit (16a; 16b; 16c; 16d) capable of oscillating reciprocating motion is provided, wherein the carriage unit (16a; 16b; 16c; 16d) is configured to transmit the driving motion to the traction device (14a; 14b; 14c; 14d) in a first traction device direction (30a; 30b; 30c; 30d), and not to transmit the driving motion to the traction device (14a; 14b; 14c; 14d) in a second traction device direction (32a; 32b; 32c; 32d) opposite to the first traction device direction (30a; 30b; 30c; 30d).

2. The cable pull-in device (10a; 10b; 10c) according to claim 1, characterized in that The carriage unit (16a; 16b; 16c) has at least one sleeve element (34a; 34b; 34c), wherein the sleeve element (34a; 34b; 34c) form-fits around the traction device (14a; 14b; 14c).

3. The cable pull-in device (10a; 10b; 10c) according to claim 2, characterized in that The sleeve element (34a; 34b; 34c) is rotatably supported in the carriage unit (16a; 16b; 16c) about the central longitudinal axis (38a; 38b; 38c) of the sleeve element (34a; 34b; 34c) via at least one bearing element (26a; 26b; 26c) in only one of two rotational directions.

4. The cable pull-in device (10a; 10b; 10c) according to claim 2, characterized in that The sleeve element (34a; 34b; 34c) has at least partially a single or multiple helical internal geometry (42a; 42b; 42c) configured to form a shape-locking with the traction device (14a; 14b; 14c).

5. The cable pull-in device (10a; 10b; 10c) according to claim 2, characterized in that The sleeve element (34a) is configured to transmit the translational motion of the carriage unit (16a; 16b; 16c) in the first traction device direction (30a; 30b; 30c) to the traction device (14a; 14b; 14c).

6. The cable pull-in device (10a; 10b; 10c) according to claim 4, characterized in that, The sleeve elements (34a; 34b; 34c) are configured to translate along the direction of the second traction device (32a; 32b; 32c) by rotational motion about the traction device (14a; 14b; 14c), wherein the sleeve elements (34a; 34b; 34c) do not transmit driving motion to the traction device (14a; 14b; 14c).

7. The cable pull-in device (10b) according to any one of the preceding claims, characterized in that, The carriage unit (16b) has an additional drive unit (46b) configured to rotatably drive the sleeve element (34b) during movement of the carriage unit (16b) in the second traction device direction (32b), and configured to anti-rotationally fix the sleeve element (34b) in the carriage unit (16b) during movement of the carriage unit (16b) in the first traction device direction (30b).

8. The cable pull-in device (10c) according to any one of the preceding claims, characterized in that, At least one additional carriage unit (50c) is provided with an additional sleeve element (52c), the additional sleeve element being configured to transmit translational motion to the traction device (14c) when the carriage unit (16c) having the sleeve element (34c) does not transmit drive motion to the traction device (14c).

9. The cable pulling device (10d) according to claim 1, characterized in that, The carriage unit (16d) has at least one spring-return latching element (54d), which is configured to transmit the drive motion to the traction device (14d) in the first traction device direction (30d) and to allow the at least one spring-return latching element (54d) to slide along the traction device (14d) in the second traction device direction (32d) without transmitting the drive motion to the traction device (14d).

10. The cable pulling device (10d) according to claim 9, characterized in that, The traction device (14d) is formed by connecting multiple rotationally symmetric, truncated cone-shaped traction device elements (66d) in series.

11. A method for operating the cable pull-in device (10a; 10b; 10c; 10d) according to any one of the preceding claims, characterized in that, In one method step, driving force is transmitted to the traction device (14a; 14b; 14c; 14d) via a linearly guided carriage unit (16a; 16b; 16c; 16d) capable of oscillating reciprocating motion.

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