CN216980139U - Multi-core single cable of driving motor - Google Patents
Multi-core single cable of driving motor Download PDFInfo
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- CN216980139U CN216980139U CN202220739807.7U CN202220739807U CN216980139U CN 216980139 U CN216980139 U CN 216980139U CN 202220739807 U CN202220739807 U CN 202220739807U CN 216980139 U CN216980139 U CN 216980139U
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Abstract
The utility model relates to a multi-core single cable of a driving motor, which comprises a control cable and a signal transmission cable which are arranged in parallel, wherein two groups of conductors of a power cable are respectively arranged on two sides of the control cable and two sides of the signal transmission cable; the signal transmission cable comprises at least two groups of signal transmission conductors which are arranged in parallel in the protective layer, and filling strips are arranged on two sides of each group of signal transmission conductors. The power cable, the control cable and the signal transmission cable which are used by the motor, the controller and the encoder are integrated in a single cable, the signal transmission cable can meet the signal transmission work by using a pair of (two) transmission conductors with shielding layers, and the arrangement positions and the shielding layers of the three cables make the formed single cable relatively insensitive to crosstalk influence during data transmission, reduce the number of the cables, avoid the mutual winding of the cables, and meet the requirement of signal transmission on the basis of convenient use.
Description
Technical Field
The utility model relates to the technical field of cable manufacturing, in particular to a multi-core single cable of a driving motor.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The servo motor is a common structural type in the driving motor, often mutually supports with encoder and controller during the use, need pass through the electric energy of power cable transmission as power, control signal through control cable transmission controller, still need pass through the signal transmission cable signal transmission encoder, and during practical application, the variety of cable is various, and it causes inconvenience to need many cables intertwine easily under the scene that driving motor followed the removal (for example the motor is installed on the arm of some removal).
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem in the background art, the utility model provides a multi-core single cable for driving a motor, wherein a power cable, a control cable and a signal transmission cable used by the motor, a controller and an encoder are integrated into one single cable, the signal transmission cable uses a DSL protocol based on an RS485 transceiver, the signal transmission work can be satisfied only by using a pair (two) of transmission conductors, and through the reasonable arrangement of three cables and the position of a shielding layer, the formed single cable is relatively insensitive to crosstalk influence during data transmission, and the requirement of signal transmission is satisfied on the basis of convenient use.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a multi-core single cable of a driving motor, which comprises a control cable and a signal transmission cable which are arranged in parallel, wherein two groups of conductors of a power cable are respectively arranged on two sides of the control cable and two sides of the signal transmission cable;
the signal transmission cable comprises at least two groups of signal transmission conductors which are at least positioned in the protective layer and arranged in parallel, and filling strips are respectively arranged on two sides of each group of signal transmission conductors.
The outer side of each group of signal transmission conductors is coaxially connected with an insulating layer.
The control cable comprises two groups of control cable conductors which are arranged in parallel in a protective layer, and the outer side of each group of control cable conductors is coaxially connected with an insulating layer.
The protective layer comprises an inner shielding layer, an inner weaving layer and an inner cladding layer which are coaxially connected from inside to outside in sequence.
The inner shielding layer, the inner weaving layer and the inner cladding layer are coaxially arranged from inside to outside, and the conductor wire core of the control cable is wrapped inside to form the control cable.
The inner shielding layer, the inner weaving layer and the inner cladding layer are coaxially arranged from inside to outside, and the conductor and the filling strip of the signal transmission cable are wrapped in the inner shielding layer, the inner weaving layer and the inner cladding layer to form the signal transmission cable.
The outer sides of the conductors of the power cables are coaxially connected with insulating layers.
The power cable, the control cable and the signal transmission cable are fixed in the outer cladding layer through the filling layer, the outer side of the outer cladding layer is coaxially connected with the outer weaving layer, and the outer weaving layer is coaxially connected with the sheath layer.
The inner shielding layer is an aluminum-plastic composite belt, the inner woven layer is a tinned copper wire, and the inner cladding layer is a polyester belt.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
the power cable used by the motor, the controller and the encoder, the control cable and the signal transmission cable are integrated in a single cable, the signal transmission cable can meet the signal transmission work by using a pair of (two) transmission conductors with shielding layers, and the arrangement positions and the shielding layers of the three cables make the formed single cable relatively insensitive to crosstalk influence during data transmission, the number of the cables is reduced, when the cables are applied to a mobile working scene, the mutual winding of the cables is avoided, and the requirement of signal transmission is met on the basis of convenient use.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic cross-sectional view of a signal transmission cable according to the prior art of the present invention;
FIG. 2 is a schematic cross-sectional view of a power cable according to the prior art;
FIG. 3 is a schematic cross-sectional view of a prior art control cable according to the present invention;
FIG. 4 is a schematic cross-sectional view of a multi-core single cable according to one or more embodiments of the present invention;
in the figure: 1. a power cable; 10. a power cable body; 2. a control cable; 3. a signal transmission cable; 30. a signal transmission cable body; 31. a signal transmission conductor; 32. filling the strip; 41. an inner shield layer; 42. an inner braid; 43. an inner cladding layer; 5. a filling layer; 6. an outer cladding layer; 7. an outer braid layer; 8. a sheath layer.
Detailed Description
The utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, the driving motor needs a plurality of cables to handle different functions to operate normally, and in some scenes where the driving motor needs to move along (for example, the motor is installed on some moving mechanical arms), the plurality of cables are easily intertwined with each other, which causes inconvenience.
Therefore, the following embodiments provide a multi-core single cable for driving a motor, a power cable, a control cable and a signal transmission cable used by the motor, the controller and the encoder are integrated into one single cable, wherein the signal transmission cable uses a DSL protocol based on an RS485 transceiver, and only one pair (two) of transmission conductors is used to satisfy the signal transmission work, and through reasonable arrangement of the three cables and the position of the shielding layer, the formed single cable is relatively insensitive to crosstalk influence during data transmission, and meets the requirement of signal transmission on the basis of convenient use.
The first embodiment is as follows:
the cross-sectional structures of a signal transmission cable, a power cable and a control cable used in the present driving motor are shown in fig. 1 to 3, respectively.
Fig. 1 shows a signal transmission cable with a common structure, in which a signal transmission cable body 30 is used for connecting an encoder, and 4 pairs of eight conductors are used to complete signal transmission.
Fig. 2 and 3 are schematic cross-sectional views of a power cable and a control cable, respectively, which are conventional at present, for example, the power cable body 10 in fig. 2 includes 4 conductors.
Taking a servo motor as an example of the driving motor, when the servo motor is used, the servo motor is connected with the encoder and the controller for matching use, and the matching use of the plurality of cables is inconvenient.
Meanwhile, the traditional servo motor is connected with double interfaces or three interfaces, so that the connection form is complicated, the number of used connectors is large, and the use cost is high; the servo motor is short in connection distance with the encoder and the controller, and time delay, signal instability and the like of a control signal and an encoder signal are generated when the distance is too long; the servo motor is usually fixed in a certain place, a plurality of cables can meet the use requirement, but if the servo motor is installed in some scenes following the movement of equipment (for example, following the movement of a mechanical arm), the plurality of cables are mutually wound when the motor follows the movement of the equipment, and the use is inconvenient.
The above problems can be solved if the power cable, the control cable and the signal transmission cable are integrated into a single cable, but the integration of the power cable and the control cable causes signal crosstalk to the signal transmission cable.
SICK STEGMAN GmbH HIPERFACE
The technology is an interface based on an RS485 transceiver, a digital protocol that can provide a single cable connection between the motor and the drive controller. Therefore, the signal transmission wire core of the embodiment CAN use a pair of CAN buses to replace the traditional four-pair structure encoder cable by using the protocol, so that the multi-cable integration process CAN be realized.
As shown in fig. 4, the present embodiment aims to provide a multi-core single cable for a driving motor, which includes: the power cable comprises a control cable 2 and a signal transmission cable 3 which are arranged in parallel, wherein two groups of conductors of a power cable 1 are respectively arranged on two sides of the control cable 2 and two sides of the signal transmission cable 3;
the signal transmission cable 3 includes at least two groups of signal transmission conductors 31 arranged in parallel at least in the protective layer, and two sides of the two groups of signal transmission conductors 31 are respectively provided with a filler strip 32. The outside of each group of signal transmission conductors 31 is connected with an insulating layer.
The control cable 2 comprises two groups of control cable conductors which are arranged in parallel in a protective layer, and the outer side of each group of control cable conductors is connected with an insulating layer.
The protective layer comprises an inner shielding layer 41, an inner weaving layer 42 and an inner cladding layer 43 which are coaxially connected from inside to outside in sequence.
The outer sides of the conductors of the power cable 1 are connected with insulating layers.
The power cable 1, the control cable 2 and the signal transmission cable 3 are fixed in the outer cladding layer 6 through the filling layer 5, the outer side of the outer cladding layer 6 is coaxially connected with the outer weaving layer 7, and the outer weaving layer 7 is coaxially connected with the sheath layer 8.
In the structure, two wires of the signal transmission cable are twisted and arranged adjacent to the control cable and the power cable in the same environment based on a DSL protocol, and the shielding layers of the signal transmission cable and the control cable are matched, so that data transmission is relatively insensitive to crosstalk influence (particularly to ground crosstalk), and the use requirement can be met on the premise of reducing the number of the cables.
In this embodiment, two sets of conductors of the signal transmission cable 3 adopt a pair (two) of CAN buses based on a DSL protocol RS485 interface instead of a traditional encoder cable with a four-pair (eight-piece) structure, and the conductors are manufactured in a composite fine-twisted conductor manner, and the insulating layer is made of a PE/PP material, a physical foaming extrusion process, a moderate-pitch twisted-pair structure, a moderate-pitch cabling, a high-density woven shield, and a PUR high-elasticity material sheath is extruded.
In the embodiment, a composite fine twisting mode is adopted when the conductor (power core) of the power cable and the conductor (control core) of the control cable are manufactured, the outer diameter of a single copper wire is preferably 0.08mm, the pitch-diameter ratio of the twisting distance is controlled to be 20 (primary twisting) and 15 (secondary twisting), and the forward and reverse directions of the non-twisting or back-twisting device are compositely twisted, so that the phenomena of strand jumping and strand breaking are avoided.
In this embodiment, a 22AWG (standard for cable) composite fine-twisted conductor mode is adopted when a conductor (signal transmission core) of the signal transmission cable is manufactured, the outer diameter of a single copper wire is preferably 0.08mm, the pitch-diameter ratio of the twisting pitch is controlled to be 15 (primary twisting) and 10 (secondary twisting), and the forward and reverse directions of the non-twisting or untwisting equipment are compositely twisted, so that the phenomena of strand jumping and strand breaking are avoided.
In this embodiment, the conductor external diameter of power cable adopts 0.15mm or less usually, and big specification conductor appears the fracture easily under the motion environment and leads to the phenomenon of outage, and the fine twisting structure makes the conductor softer, can be applicable to various very little radius of buckling's removal and lay the occasion, has prolonged life.
In the embodiment, the insulating material of the power and control wire core is a PE/PP material, the material has high tensile strength, high tensile rate and small dielectric coefficient which can reach more than 400% at most, the thickness can be thinner, and the outer diameter is small, so that the PE/PP material is a very good preferred material. Because the material is high in strength and good in toughness, the material can be better suitable for the installation environment of motion laying, and the service life of the cable under the motion environment is prolonged.
In this embodiment, the signal transmission sinle silk adopts physics foaming three-layer crowded technology altogether, and the concentricity reaches more than 90%, and aquatic electric capacity: 95pF/m, the characteristic impedance of a signal transmission wire core in a finished product is 110 +/-10 ohms, the characteristic impedance is basically consistent with a load resistance of 112 ohms in a DSL technical protocol, load balance is realized, the signal transmission distance and stability are basically consistent with those of an encoder cable, and the application of a moving laying installation environment is realized.
In the embodiment, the control wire core and the signal transmission wire core adopt a pair twisting structure with 10-15 times of pitch diameter ratio as a pair twisting pitch, a non-twisting or untwisting device is used for twisting, the flexibility can be kept at a small pitch, the mechanical stress of a metal conductor is eliminated by adopting a non-twisting or untwisting processing technology, the two twisted core wires of the cable are not easily dispersed in a moving laying occasion, and the risks of signal crosstalk and signal loss are prevented. The signal transmission sinle silk adds the hard material filler strip 32 of a suitable external diameter in every side when the pair twist, and the signal transmission sinle silk plays the supporting role when receiving influences such as external force extrusion, can not warp easily, makes signal transmission distortion or loses.
The outer sides of the insulating layers of the conductors of the control cable 2 and the signal transmission cable 3 are respectively wrapped with the two groups of conductors of the control cable 2 and the two groups of conductors of the signal transmission cable 3 and the two groups of filling strips through an inner shielding layer 41, an inner woven layer 42 and an inner cladding layer 43 which are coaxially arranged from inside to outside.
The inner shielding layer 41 can be an aluminum-plastic composite tape;
the inner braid 42 may be a tinned copper wire;
the inner coating layer 43 may be a polyester tape.
Specifically, in this embodiment, the control wire core and the signal transmission wire core are twisted in pairs and then wrapped with an aluminum-plastic composite tape, the aluminum-plastic composite tape plays a role of wrapping the twisted wire core, and the aluminum-plastic composite tape is formed by combining a polyester tape layer and an aluminum foil layer and has certain elasticity, so that the wire core is prevented from being disassembled by external force to cause signal distortion. On the other hand, the shielding effect is achieved, and the aluminum-plastic composite belt can shield the interference of high-frequency signals of other components.
In the embodiment, after the control wire core and the signal transmission twisted wire core are wrapped by the aluminum-plastic composite tape, the tinned copper wire (the inner braid 42) is used for weaving shielding, the thinner tinned copper wire with the thickness of 0.1mm is adopted, the weaving angle is 30-60 degrees, and the shielding rate is over 85 percent.
The aluminum-plastic composite belt and the woven layer form a double-layer shielding structure, the double-layer shielding structure can simultaneously protect two kinds of signal interference of a high frequency band and a low frequency band, suitable woven wires and woven angles are selected, and the formed single cable is softer and more suitable for sports laying and installation. The higher shielding rate can meet electromagnetic compatibility instruction EMC, plays better guard action to the cable.
In the embodiment, the overall cable pitch is 10-15 times of the overall cabling outer diameter of the cable core, so that the overall cable keeps compactness, the tensile resistance is increased, and the flexibility is stronger in a moving laying occasion; the non-twist cabling processing technology is used, the direction of the assembly cable is consistent with the direction of the twisted pair wires of the control wire core and the signal wire core, the signal wire core unit is not damaged, the original shape and function of the twisted pair wire are kept, and the phenomena of signal distortion, signal loss, signal crosstalk and signal attenuation are prevented. When the cable is assembled, the power wire cores and the signal wire cores are symmetrically distributed, so that the size of a product can be reduced, the cost is saved, the stress of the wire cores can be kept uniform and balanced when the product is influenced by external force, and the accuracy of signal transmission is ensured.
In the embodiment, a high-elasticity material is used as a sheath material (a sheath layer 8), the material has better performance indexes such as tensile strength, elongation at break, abrasion resistance and the like compared with a PVC material used for a traditional motor cable, on one hand, the tensile strength of the product is increased, the toughness is greatly improved, on the other hand, the bending radius of the cable under the natural condition is increased due to high material toughness, and the protection of the cable under the motion laying occasion from external force is facilitated.
In this embodiment, the characteristic impedance of the signal transmission core in the finished cable is: 110 omega, attenuation <5dB/100m, transmission rate > 66%.
The cable of above-mentioned structure, with three kinds of cables of power cable, control cable and the signal transmission cable of traditional motor through the application of DSL technical protocol and to cable structure's adjustment, integrates a compound single cable, has reduced the use quantity of cable, has also reduced connector use quantity simultaneously, greatly reduced use cost.
Through the change to the cable structure for the life of cable improves under the special occasion of tow chain removal.
The method can be applied to scenes of following motion of motors such as industrial automation equipment and robots, not only ensures the accuracy of information transmission, but also prolongs the maintenance time and reduces the maintenance investment of labor and material cost.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A drive motor multicore single cable which characterized in that: the power cable comprises a control cable and a signal transmission cable which are arranged in parallel, wherein two groups of conductors of the power cable are respectively arranged on two sides of the control cable and two sides of the signal transmission cable;
the signal transmission cable comprises at least two groups of signal transmission conductors which are arranged in parallel in the protective layer, and filling strips are arranged on two sides of each group of signal transmission conductors.
2. The multiple core single cable for driving a motor of claim 1, wherein: the outer side of each group of signal transmission conductors is coaxially connected with an insulating layer.
3. The multiple core single cable for driving a motor of claim 1, wherein: the control cable comprises two groups of control cable conductors which are arranged in parallel in a protective layer, and the outer side of each group of control cable conductor is coaxially connected with an insulating layer.
4. A drive motor multicore single cable of claim 1 or 3, wherein: the protective layer comprises an inner shielding layer, an inner weaving layer and an inner cladding layer which are coaxially connected from inside to outside in sequence.
5. The multiple core single cable for driving a motor of claim 4, wherein: the inner shielding layer, the inner weaving layer and the inner cladding layer are coaxially arranged from inside to outside, and the conductor of the control cable is wrapped inside to form the control cable.
6. The multiple core single cable for driving a motor of claim 4, wherein: the inner shielding layer, the inner weaving layer and the inner cladding layer are coaxially arranged from inside to outside, and the conductor and the filling strip of the signal transmission cable are wrapped in the inner shielding layer, the inner weaving layer and the inner cladding layer to form the signal transmission cable.
7. A drive motor multicore single cable of claim 1, wherein: and the outer sides of the conductors of the power cables are coaxially connected with insulating layers.
8. The multiple core single cable for driving a motor of claim 1, wherein: the power cable, the control cable and the signal transmission cable are fixed in the outer cladding layer through the filling layer.
9. The multiple core single cable for driving a motor of claim 8, wherein: the outer side of the outer cladding layer is coaxially connected with the outer braided layer.
10. The multiple core single cable for driving a motor of claim 9, wherein: the outer braided layer is coaxially connected with the sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220739807.7U CN216980139U (en) | 2022-03-31 | 2022-03-31 | Multi-core single cable of driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220739807.7U CN216980139U (en) | 2022-03-31 | 2022-03-31 | Multi-core single cable of driving motor |
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| Publication Number | Publication Date |
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| CN216980139U true CN216980139U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220739807.7U Active CN216980139U (en) | 2022-03-31 | 2022-03-31 | Multi-core single cable of driving motor |
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| CN (1) | CN216980139U (en) |
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- 2022-03-31 CN CN202220739807.7U patent/CN216980139U/en active Active
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