A multi-layer large diameter cable swing device

Abstract

The utility model relates to the technical field of electromagnetic emission, especially to a multilayer large diameter cable rotary device. The design mainly aims at laying large diameter multiple cables reasonably in limited space and realizing a certain range of rotation angle. The layout breaks through the RBR form drag chain layout mode of transmission, meets the demand of 60 cables with 50mm diameter rotating by plus or minus 60 degrees, solves the problems of cable laying difficulty, mutual entanglement and the like, and the technology has the characteristics of ingenious conception, convenient implementation, reliable work, convenient use and the like. Such layout mode not only makes full use of space layout, but also realizes rotary space, and the load of the drag chain driven by the rotary table is reasonably distributed to the subframe, thereby reducing the load of the rotary table.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic launch technology, and in particular to a multi-layer large-diameter cable rotation device. Background Technology

[0002] For electromagnetic launching devices with high muzzle kinetic energy, the launching device has elevation and rotational movements, achieving firing within a specified area. The energy of the launching device comes from electromagnetism, requiring a strong current input. The cables are up to 50mm in diameter and number up to 60, which need to be laid from the vehicle body to the turntable, rotating with the turntable. According to the equipment structural design requirements, the turntable rotates via a gyro mount, and the cables are laid below the turntable. The 60 50mm diameter cables need to rotate between -60° and +60° with the turntable. Due to the large rotation angle of the turntable, winding the 60 cables is quite difficult. Therefore, a multi-layer, large-diameter cable winding device needs to be designed to solve the cable laying problem.

[0003] For rotary motion, cable laying basically uses two methods: current slip rings and rotary cable chains. Current slip rings significantly increase costs and have the disadvantage of strong electromagnetic interference, posing safety hazards. Traditional cable chains are arranged in the form of RBRs inside the swivel joint. For 60 cables with a diameter of 50mm, it is impossible to simultaneously rotate multiple large-diameter cable chains with a full rotation angle of -60° to +60° within the limited space of the swivel joint. Utility Model Content

[0004] To address the shortcomings of existing technologies, a multi-layer large-diameter cable winding device was designed to accommodate the rotation angle of 60 cables with a diameter of 50mm from -60° to +60°. This design breaks away from the traditional RBR (Roller Bracket) type cable chain, arranging the cable chain symmetrically on the outside of the swivel seat using a combination of linear and rotary configurations. A three-layer vertical cable chain is employed, with the linear end fixed and the rotary end rotating with the turntable to meet the requirements of winding multiple large-diameter cables.

[0005] According to one aspect of this application, a multi-layer large-diameter cable slewing device is provided, including a slewing seat 1, an inner ring 2, a gear set 3, a turntable bearing 4, a left drag chain 5, a turntable 6, and a right drag chain 7.

[0006] One end of the left drag chain 5 and the right drag chain 7 is fixed to the opening of the inner ring 2, and the other end is fixed to the support frame.

[0007] The inner ring 2 is fixed to the bottom plane of the turntable 6. It engages the left drag chain 5 and the right drag chain 7 at the opening on the turntable 6, thereby driving the left drag chain 5 and the right drag chain 7 to rotate at positive and negative angles.

[0008] The turntable 6 is mounted on the turntable bearing 4, and the whole assembly is placed on the swivel seat 1. The motor drives the gear set 3 to rotate, and transmits the power to the turntable 6 through the turntable bearing 4, thereby driving the left drag chain 5 and the right drag chain 7 to rotate with the turntable 6 at positive and negative angles.

[0009] The left drag chain 5 and the right drag chain 7 each consist of 3 vertical drag chains, for a total of 6, arranged symmetrically. Each vertical drag chain has 10 50mm cables arranged in a single row, with internal partitions to ensure that the cables do not come into contact with each other.

[0010] To reduce the weight of the cable chain driven by the turntable, the cable chain rests directly on the supporting frame, allowing it to move only by overcoming bottom friction. The cable chain layout is as follows: Figure 1 To adapt to the spatial layout, the fixed end of the cable chain is also designed to rotate, ensuring that the length of the cable chain meets the design requirements.

[0011] The bending radius of the innermost vertical cable chain is greater than or equal to the bending radius of the cable, and the radii of the middle and outer cable chains are increased sequentially to satisfy the cable's rotation space.

[0012] The multi-layer large-diameter cable winding device uses a vertical drag chain that combines bending and straight lines to achieve full-angle rotation. The cable enters from the fixed end (i.e., the end of the vertical drag chain fixed to the frame) and extends from the rotating end (the end near gear set 3). After extending, it directly enters the pitching device, achieving relative stationary rotation of the cable interface and ensuring the integrity of the large-diameter cable. At 0 degrees, the two vertical drag chains are symmetrical. When the drag chain rotates to the right, the right drag chain retracts, and the left drag chain stretches along the inner circle, stopping at 60 degrees. Figure 4 As shown, the reverse is also true, ultimately achieving the rotation requirement of a full angle of -60° to +60°.

[0013] The advantages of this application are:

[0014] This design primarily addresses the efficient laying of multiple large-diameter cables within a limited space, while achieving a certain range of rotation angles. It breaks away from the traditional RBR (Roller-Band) cable chain layout, accommodating the ±60° rotation of 60 cables with a diameter of 50mm. This solves problems such as difficult cable laying and cable entanglement. The technology is characterized by its ingenious design, ease of implementation, reliable operation, and convenient use. This layout not only fully utilizes space but also maximizes rotational space, while simultaneously distributing the load of the turntable-driven cable chain to the subframe, reducing the turntable's load. Attached Figure Description

[0015] Figure 1 A schematic diagram of a multi-layer large-diameter cable winding device;

[0016] Figure 2 This is a schematic cross-sectional view of a multi-layer large-diameter cable winding device;

[0017] Figure 3 , 4 Figure 5 shows a schematic diagram of the working principle of a multi-layer large-diameter cable winding device;

[0018] in, Figure 3 This is a schematic diagram showing the rotation to -60°. Figure 4 This is a schematic diagram at the 0° position. Figure 5 This is a schematic diagram of rotating to 60°.

[0019] In the diagram: 1. Rotary seat, 2. Inner ring, 3. Gear set, 4. Turntable bearing, 5. Left-side cable chain, 6. Turntable, 7. Right-side cable chain. Detailed Implementation

[0020] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0021] Example 1

[0022] refer to Figure 1 The rotating ends of the drag chains 5 and 7 on both sides are engaged on the inner ring 2, and rotate ±60° with this turntable 6. The cable enters the drag chain from the fixed end, and is laid in a bend and loop, meeting the bending radius requirements, and then wraps around to the inner ring 2 from both sides, and is fixed to the outlet side along the inner ring 2.

[0023] When the electric motor drives the gear set 3 to rotate forward, the turntable 6 rotates to the left. The drag chains 5 and 7 on the left and right sides engage with the inner ring 2, which in turn engages with the lower plane of the turntable 6. The turntable 6 drives the inner ring 2 and the drag chains to rotate to the left together. When the rotation reaches 60°, the drag chain 7 on the right side rotates with the arc surface of the gear ring 2, and the fixed end of the drag chain bends accordingly. The drag chain on the left side retracts along the arc surface in the opposite direction. (Reference) Figure 4 .

[0024] When the electric motor drives the gear set 3 in reverse, the turntable 6 rotates to the right. The drag chains 5 and 7 on the left and right sides engage with the inner ring 2, which in turn engages with the lower plane of the turntable 6. The turntable 6 drives the inner ring 2 and the drag chains to rotate to the right together. When the rotation reaches 60°, the left drag chain 5 rotates with the arc surface of the gear ring 2, and the fixed end of the drag chain bends accordingly. The right drag chain retracts along the arc surface in the opposite direction. (Reference) Figure 5 .

[0025] After fixing the inner ring 2 to the turntable 6, 60 cables are sequentially threaded into the vertical cable chain. Each vertical cable chain has a partition inside, which ensures that each cable does not come into contact with the others during the cable winding process.

[0026] After 60 cables enter the multi-large-diameter cable winding device, they are arranged on the left and right sides, extending from the left side of the inner ring to the turntable. This design enables the cables to rotate smoothly within a limited space, breaking through the traditional cable layout method. It combines straight lines and rotation, solving the problem of not being able to use a drag chain RBR layout in a certain space.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any modifications or substitutions made by those skilled in the art within the scope of the technology disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-layer large-diameter cable slewing device, characterized in that, Includes a rotary seat (1), inner ring (2), gear set (3), turntable bearing (4), left drag chain (5), turntable (6), right drag chain (7); One end of the left drag chain (5) and the right drag chain (7) are fixed at the opening of the inner ring (2), and the other end is fixed on the support frame. The inner ring (2) is fixed to the bottom plane of the turntable (6). The left drag chain (5) and the right drag chain (7) are connected at the opening on the turntable (6), which drives the left drag chain (5) and the right drag chain (7) to rotate at positive and negative angles. The turntable (6) is mounted on the turntable bearing (4), and the whole assembly sits on the gyratory seat (1). The motor drives the gear set (3) to rotate, and transmits the power to the turntable (6) through the turntable bearing (4), thereby driving the left drag chain (5) and the right drag chain (7) to rotate with the turntable (6) at positive and negative angles.

2. The multi-layer large-diameter cable slewing device according to claim 1, characterized in that, The left drag chain (5) and the right drag chain (7) each consist of 3 vertical drag chains, for a total of 6, arranged symmetrically. Each vertical drag chain has 10 50mm cables arranged in a single row, with internal partitions to ensure that the cables do not come into contact with each other.

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