Traveling cable anti-torsion wiring harness for rotary elevator and installation method

Abstract

The traveling cable anti-torsion wiring harness comprises an anti-torsion wiring harness set, the upper end of the anti-torsion wiring harness set is connected with a lift car distribution box, the upper end of the lift car distribution box is connected with a lift car, and the upper end of the lift car is connected with an upper rotating shaft; the lower end of the lift car is connected with a lower rotating shaft cylinder, the lower end of the anti-torsion wire harness set penetrates through the lower rotating shaft cylinder to be connected with a base junction box, and the lower end of the base junction box is connected with a traveling cable. An upper fixing wire clamp is arranged above the lower rotating shaft cylinder, a lower fixing wire clamp is arranged above the base junction box, the lower fixing wire clamp is connected with the lower end of the anti-torsion wire harness set, and the upper fixing wire clamp is connected with the middle of the anti-torsion wire harness set. According to the traveling cable anti-torsion wiring harness for the rotary elevator and the installation method, the existing defects are overcome, the service life of the adapter cable harness is obviously prolonged, and the operation reliability of the rotary elevator is greatly improved.

Description

Technical Field

[0001] The invention relates to an anti-torsion wiring harness of a traveling cable for a rotary elevator and an installation method thereof. Background Art

[0002] A rotary elevator is a special type of lift that can adapt to the entrances and exits of buildings or scenic spots in different directions, providing a unique visual experience and convenient transportation services. It was used abroad in the early days. With the rapid development of the domestic construction and tourism industries, there has been more and more demand in the market. A few domestic advanced elevator manufacturers have successfully developed and started commercial applications. The general design of a rotary elevator is that the car rotates, and the accompanying cable cannot be directly installed on the car body. Instead, the accompanying cable is hung on the car base, connected to the base transfer box, and then led from the transfer box to the distribution box under the rotating car with a round control cable harness.

[0003] For the above-mentioned transfer harness, the general practice is to use a round control cable harness for a conventional elevator system to achieve this function. Some manufacturers will use a soft control cable harness that is softer than conventional cables for transfer, and the cables will be installed in a bundled manner. Since the current practice is not designed according to the actual movement requirements and environmental requirements of the elevator, the transfer cable harness began to break after about a year of operation, and the cables were severely broken and damaged. An adapted transfer cable harness is urgently needed to solve the matching of the new rotary elevator.

[0004] Therefore, in view of the above problems, a torsion-resistant wiring harness and an installation method for a traveling cable for a rotary elevator are proposed. Summary of the invention

[0005] The purpose of the present invention is to overcome the existing defects and provide a traveling cable anti-torsion wiring harness and installation method for a rotary elevator, which significantly improves the service life of the switching cable harness and greatly improves the operating reliability of the rotary elevator.

[0006] The technical solution to achieve the above-mentioned purpose is: a torsion-resistant wiring harness for a traveling cable of a rotating elevator, comprising an torsion-resistant wiring harness group, the upper end of which is connected to a car distribution box, the upper end of which is connected to a car, and the upper end of which is connected to an upper rotating shaft; the lower end of the car is connected to a lower rotating shaft cylinder, the lower end of which passes through the lower rotating shaft cylinder and is connected to a base junction box, and the lower end of the base junction box is connected to a traveling cable; an upper fixed wire clamp is arranged above the lower rotating shaft cylinder, a lower fixed wire clamp is arranged above the base junction box, the lower fixed wire clamp is connected to the lower end of the torsion-resistant wiring harness group, and the upper fixed wire clamp is connected to the middle of the torsion-resistant wiring harness group.

[0007] Specifically, the torsion-resistant wiring harness group includes power cables, control cables and communication cables; the lower ends of the power cables, the control cables and the communication cables are connected to the base junction box, and the upper ends are connected to the car distribution box; the lower fixed wire clamps are respectively connected to the lower ends of the power cables, the control cables and the communication cables; the upper fixed wire clamps are respectively connected to the middle parts of the power cables, the control cables and the communication cables.

[0008] Specifically, the power cable includes a plurality of power conductors, a first anti-torsion unit and a first outer sheath; the plurality of power conductors are evenly distributed on the outer side wall of the first anti-torsion unit, and the plurality of power conductors are covered in the first outer sheath.

[0009] Specifically, the control cable includes multiple control wires, a second anti-torsion unit and a second outer sheath; the outer side wall of the second anti-torsion unit is evenly distributed with the control wires twisted in multiple components, and multiple groups of the control wires are wrapped in the second outer sheath.

[0010] Specifically, the communication cable includes multiple communication wires, a third anti-torsion unit and a third outer sheath; the outer side wall of the third anti-torsion unit is evenly distributed with multiple groups of twisted shielded communication wires, and the multiple groups of communication wires are wrapped in the third outer sheath.

[0011] Specifically, the first anti-torsion unit, the second anti-torsion unit and the third anti-torsion unit all include a unit core and a buffer layer, and the buffer layer is coated on the outside of the unit core.

[0012] Specifically, the unit core is made of multiple high-strength fibers.

[0013] Specifically, the buffer layer is made of polyvinyl chloride elastomer.

[0014] A method for installing a torsion-resistant wiring harness of a traveling cable for a rotary elevator, comprising:

[0015] Step 1: Connect the upper end of the torsion-resistant harness group to the car distribution box, and the lower end passes through the lower rotating shaft cylinder. An upper fixed wire clamp is arranged above the lower rotating shaft cylinder, and a lower fixed wire clamp is arranged above the base junction box. The distance between the upper fixed wire clamp and the lower fixed wire clamp is set to H, and the vertical distance between the upper twisting point and the upper fixed wire clamp and the vertical distance between the lower twisting point and the lower fixed wire clamp are both I;

[0016] Step 2: Determine the twisting length L according to the vertical distance H between the two fixed points of the upper fixed wire clamp and the lower fixed wire clamp, L=H-2l (l is selected as 6 times the cable diameter d); first pass all the cables through the upper fixed wire clamp and fix them, and tie all the cables together with a suitable nylon tie at a vertical distance I below the upper fixed wire clamp, and the other end of the cable is free, and then twist all the cables together according to the twisting pitch h (h is the twisting pitch, selected according to the number of cables and the outer diameter of the cables). After completing the twisting length L, tie all the cables together with a suitable nylon tie;

[0017] Step three, the twisted torsion-resistant wire harness group is fixed at the upper fixed wire clamp and the lower fixed wire clamp at the center of the lower rotating shaft tube, and the fixed positions of the two ends are I above or below the above-mentioned cable bundling point; after completing the cable installation at the two fixed points of the upper fixed wire clamp and the lower fixed wire clamp, untie the bundled nylon tie to complete the installation of the torsion section of the torsion-resistant cable harness.

[0018] The twisting of the torsion section of the torsion-resistant harness group must be carried out at the rotation starting point set by the elevator.

[0019] The twisting direction of the cables in the torsion section of the torsion-resistant harness group is the same as the rotation direction of the elevator.

[0020] The beneficial effects of the present invention are as follows: the accompanying cable anti-torsion wiring harness and installation method for rotary elevators can significantly improve the operating life of the transfer cable harness, and the design life is more than 10 times that of ordinary harnesses. It can greatly improve the operating reliability of rotary elevators, reduce replacement costs and elevator downtime costs, solve an important technical bottleneck in the domestic manufacture of high-quality rotary elevators, significantly improve the technical level of domestic rotary elevators, and also improve the riding safety of rotary elevators, with good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the connection position of the anti-torsion wiring harness of the accompanying cable for the rotary elevator of the present invention;

[0022] Figure 2 It is a schematic diagram of twisting installation of the torsion-resistant cable harness of the present invention;

[0023] Figure 3 is a schematic diagram of a power cable of the present invention;

[0024] Figure 4 is a schematic diagram of a control cable of the present invention;

[0025] Figure 5 It is a schematic diagram of a communication cable of the present invention.

[0026] In the figure: 1. torsion-resistant harness group; 2. car distribution box; 3. car; 4. upper rotating shaft; 5. lower rotating shaft cylinder; 6. base junction box; 7. accompanying cable; 8. upper fixed wire clamp; 9. lower fixed wire clamp; 10. power cable; 11. control cable; 12. communication cable; 13. power conductor; 14. first torsion-resistant unit; 15. first outer sheath; 16. control conductor; 17. second torsion-resistant unit; 18. second outer sheath; 19. communication conductor; 20. third torsion-resistant unit; 21. third outer sheath; 22. unit core; 23. buffer layer. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figure 1-5 As shown, a torsion-resistant wiring harness for a traveling cable of a rotating elevator comprises an torsion-resistant wiring harness group 1, the upper end of the torsion-resistant wiring harness group 1 is connected to a car distribution box 2, the upper end of the car distribution box 2 is connected to a car 3, the upper end of the car 3 is connected to an upper rotating shaft 4; the lower end of the car 3 is connected to a lower rotating shaft cylinder 5, the lower end of the torsion-resistant wiring harness group 1 passes through the lower rotating shaft cylinder 5 and is connected to a base junction box 6, the lower end of the base junction box 6 is connected to a traveling cable 7; an upper fixed wire clamp 8 is arranged above the lower rotating shaft cylinder 5, a lower fixed wire clamp 9 is arranged above the base junction box 6, the lower fixed wire clamp 9 is connected to the lower end of the torsion-resistant wiring harness group 1, and the upper fixed wire clamp 8 is connected to the middle of the torsion-resistant wiring harness group 1.

[0030] like Figure 3 , 4 As shown in Figures 5 and 6, the torsion harness group 1 includes a power cable 10, a control cable 11 and a communication cable 12; the lower ends of the power cable 10, the control cable 11 and the communication cable 12 are connected to the base junction box 6, and the upper ends are connected to the car distribution box 2; the lower fixed wire clamp 9 is respectively connected to the lower ends of the power cable 10, the control cable 11 and the communication cable 12; the upper fixed wire clamp 8 is respectively connected to the middle of the power cable 10, the control cable 11 and the communication cable 12. Each cable design adopts the same outer diameter, and the outer diameter error is not greater than ±2mm.

[0031] Specifically, the power cable 10 includes a plurality of power conductors 13, a first anti-torsion unit 14 and a first outer sheath 15; the outer wall of the first anti-torsion unit 14 is evenly distributed with a plurality of power conductors 13, and the plurality of power conductors 13 are enclosed in the first outer sheath 15. The control cable 11 includes a plurality of control conductors 16, a second anti-torsion unit 17 and a second outer sheath 18; the outer wall of the second anti-torsion unit 17 is evenly distributed with a plurality of control conductors 16 twisted in multiple components, and the plurality of control conductors 16 are enclosed in the second outer sheath 18. The communication cable 12 includes a plurality of communication conductors 19, a third anti-torsion unit 20 and a third outer sheath 21; the outer wall of the third anti-torsion unit 20 is evenly distributed with a plurality of twisted shielded communication conductors 19, and the plurality of communication conductors 19 are enclosed in the third outer sheath 21.

[0032] Specifically, the power cable adopts a layer-twisted structure, with the first anti-twist unit 14 placed in the center; the control cable and the communication cable adopt a multiple-twisted structure, with the second anti-twist unit 17 and the third anti-twist unit 20 placed in the center.

[0033] Specifically, the power conductor 13, the control conductor 16 and the communication conductor 19 use Class 6 soft copper conductors, and the twisting direction is the same as the cabling direction.

[0034] Specifically, the first anti-torsion unit 14, the second anti-torsion unit 17 and the third anti-torsion unit 20 all include a unit core 22 and a buffer layer 23, and the buffer layer 23 is coated on the outside of the unit core 22. The unit core 22 is made of a plurality of high-strength fibers and can also use aramid. The buffer layer 23 is made of polyvinyl chloride elastomer, and can also use other plastic elastomers or rubber materials.

[0035] The fiber specifications and the outer diameter of the torsion unit are matched according to Table 1;

[0036] The above matching relationship is based on the hardness of the cable insulation material (Shore hardness value) of 90HA. If the cable insulation material changes, the hardness of the torsion unit buffer layer will be adjusted accordingly based on Table 2, and the adjustment ratio is 1.92:1, that is, the hardness of the buffer layer increases or decreases by 1HA for every 1.92HA increase or decrease in the hardness of the insulation layer material.

[0037] The above matching relationship is based on the value when the cable conductor has only one cross-sectional specification. If there are two or more conductor specifications in the cable, the smallest conductor specification shall be selected according to Table 2.

[0038] Table 1 Torsion-resistant unit core specifications and unit outer diameter matching

[0039]

[0040] Note: The tolerance range of the unit outer diameter is ±0.5mm;

[0041] Table 2: Hardness of torsion unit buffer layer material (Shore A) and conductor specifications

[0042]

[0043] The insulation of all cables can be made of PVC, PE, XLPE, halogen-free polyolefin plastic or TPE elastomer. The specific material is selected according to the working environment and cable design principles.

[0044] A method for installing a torsion-resistant wiring harness of a traveling cable for a rotary elevator, comprising:

[0045] Step 1: Connect the upper end of the torsion-resistant harness group 1 to the car distribution box 2, and the lower end passes through the lower rotating shaft cylinder 5. An upper fixed wire clamp 8 is arranged above the lower rotating shaft cylinder 5, and a lower fixed wire clamp 9 is arranged above the base junction box 6. The distance between the upper fixed wire clamp 8 and the lower fixed wire clamp 9 is set to H, and the vertical distance between the upper twisting point and the upper fixed wire clamp 8 and the vertical distance between the lower twisting point and the lower fixed wire clamp 9 are both I;

[0046] Step 2: Determine the twisting length L according to the vertical distance H between the two fixed points of the upper fixed wire clamp 8 and the lower fixed wire clamp 9, L=H-2l (l is selected as 6 times the cable diameter d); first pass all the cables through the upper fixed wire clamp 8 and fix them, and use a suitable nylon cable tie to tie all the cables together at a vertical distance I below the upper fixed wire clamp 8, with the other end of the cable in a free state, and then twist all the cables together according to the twisting pitch h (h is the twisting pitch, which is selected according to Table 3 based on the number of cables and the outer diameter of the cables). After completing the twisting length L, use a suitable nylon cable tie to tie all the cables together;

[0047] Step three, fix the twisted torsion-resistant harness group 1 at the upper fixed wire clamp 8 and the lower fixed wire clamp 9 at the center of the lower rotating shaft tube 5, and the fixed positions of the two ends are I above or below the upper cable bundling point; after completing the cable installation at the two fixed points of the upper fixed wire clamp 8 and the lower fixed wire clamp 9, untie the bundled nylon tie to complete the installation of the torsion section of the torsion-resistant cable harness. The twisting of the torsion section of the torsion-resistant harness group 1 must be carried out at the rotation starting point set by the elevator, and the twisting direction is the same as the rotation direction of the elevator. The twisting pitch h is selected according to Table 3, and the pitch error is ±20mm;

[0048] The cables at the fixed points are fixed with arc-shaped wire clamps. The arrangement method can be one row or multiple rows, but one row should not contain more than 4 cables, and the best structure is 2 to 3 cables. When designing cables, the total number of cables should not exceed 6. If there is a special need for more than 6 cables, they should be arranged in two bundles.

[0049] Table 3 Twist pitch of torsion-resistant cable harness

[0050] Number of cables 2 3 4 5 6 Twisting pitch h(mm) 24d 25.85d 28.97d 32.4d 36d

[0051] Note: d is the outer diameter of the cable

[0052] The anti-torsion wiring harness and installation method of the accompanying cable for the rotary elevator can significantly improve the service life of the transfer cable harness, and the design life is more than 10 times that of the ordinary harness. It can greatly improve the operating reliability of the rotary elevator, reduce the replacement cost and the cost of stopping the elevator, solve an important technical bottleneck in the domestic manufacture of high-quality rotary elevators, significantly improve the technical level of domestic rotary elevators, and also improve the riding safety of rotary elevators, with good social and economic benefits.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A torsion-resistant wiring harness for a traveling cable for a rotary elevator, characterized in that: The invention comprises an anti-torsion harness group (1), the upper end of which is connected to a car distribution box (2), the upper end of which is connected to a car (3), the upper end of which is connected to an upper rotating shaft (4); the lower end of which is connected to a lower rotating shaft cylinder (5), the lower end of which passes through the lower rotating shaft cylinder (5) and is connected to a base connection box (6), the lower end of which is connected to a traveling cable (7); an upper fixed wire clamp (8) is arranged above the lower rotating shaft cylinder (5), a lower fixed wire clamp (9) is arranged above the base connection box (6), the lower fixed wire clamp (9) is connected to the lower end of the anti-torsion harness group (1), and the upper fixed wire clamp (8) is connected to the middle of the anti-torsion harness group (1).

2. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 1 is characterized in that: The torsion-resistant harness group (1) comprises a power cable (10), a control cable (11) and a communication cable (12); the lower ends of the power cable (10), the control cable (11) and the communication cable (12) are connected to the base junction box (6), and the upper ends are connected to the car distribution box (2); the lower fixed wire clamp (9) is respectively connected to the lower ends of the power cable (10), the control cable (11) and the communication cable (12); and the upper fixed wire clamp (8) is respectively connected to the middle parts of the power cable (10), the control cable (11) and the communication cable (12).

3. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 2, characterized in that: The power cable (10) comprises a plurality of power conductors (13); a first anti-torsion unit (14) and a first outer sheath (15); the plurality of power conductors (13) are evenly distributed on the outer side wall of the first anti-torsion unit (14), and the plurality of power conductors (13) are sheathed in the first outer sheath (15).

4. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 3 is characterized in that: The control cable (11) comprises a plurality of control conductors (16); a second anti-torsion unit (17) and a second outer sheath (18); the outer side wall of the second anti-torsion unit (17) is evenly distributed with the control conductors (16) twisted in multiple components, and a plurality of groups of the control conductors (16) are sheathed in the second outer sheath (18).

5. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 4, characterized in that: The communication cable (12) comprises a plurality of communication conductors (19); a third anti-torsion unit (20) and a third outer sheath (21); the outer side wall of the third anti-torsion unit (20) is evenly distributed with a plurality of groups of twisted shielded communication conductors (19), and the plurality of groups of communication conductors (19) are sheathed in the third outer sheath (21).

6. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 5, characterized in that: The first anti-torsion unit (14), the second anti-torsion unit (17) and the third anti-torsion unit (20) all comprise a unit core (22) and a buffer layer (23), wherein the buffer layer (23) is coated on the outside of the unit core (22).

7. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 6, characterized in that: The unit core (22) is made of a plurality of high-strength fibers.

8. The anti-torsion wiring harness for the traveling cable of the rotary elevator according to claim 6, characterized in that: The buffer layer (23) is made of polyvinyl chloride elastomer.

9. A method for installing a torsion-resistant wiring harness for a traveling cable for a rotary elevator, characterized in that: include: Step 1: Connect the upper end of the torsion-resistant harness group (1) to the car distribution box (2), and the lower end passes through the lower rotating shaft cylinder (5); set an upper fixed wire clamp (8) above the lower rotating shaft cylinder (5); set a lower fixed wire clamp (9) above the base junction box (6); set the distance between the upper fixed wire clamp (8) and the lower fixed wire clamp (9) to be H, and the vertical distance between the upper twisting point and the upper fixed wire clamp (8) and the vertical distance between the lower twisting point and the lower fixed wire clamp (9) are both I; Step 2: Determine the twist length L according to the vertical distance H between the two fixed points of the upper fixed wire clamp (8) and the lower fixed wire clamp (9), where L=H-2l; first pass all the cables through the upper fixed wire clamp (8) and fix them, and tie all the cables together at a vertical distance I below the upper fixed wire clamp (8) with a suitable nylon tie, leaving the other end of the cable free, and then twist all the cables together according to the twisting pitch h. After the twist length L is completed, tie all the cables together with a suitable nylon tie; Step three, the twisted torsion-resistant harness group (1) is fixed at two points, the upper fixed wire clamp (8) and the lower fixed wire clamp (9) at the center of the lower rotating shaft tube (5), and the fixed positions of the two ends are I above or below the above-mentioned cable bundling point; after completing the cable installation at the two fixed points of the upper fixed wire clamp (8) and the lower fixed wire clamp (9), untie the bundled nylon tie to complete the installation of the torsion section of the torsion-resistant cable harness.

10. The method for installing the anti-torsion wiring harness of the traveling cable for a rotary elevator according to claim 9, characterized in that: The twisting of the torsion section of the torsion-resistant harness group (1) must be performed at the rotation starting point set for the elevator.

11. The method for installing the anti-torsion wiring harness of the traveling cable for a rotary elevator according to claim 9, characterized in that: The twisting direction of the cables in the torsion section of the torsion-resistant harness group (1) is the same as the rotation direction of the elevator.

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