Cable intermodulation test equipment

Abstract

The utility model discloses a cable intermodulation test device, and solves the problem that a cable intermodulation test cable is unstable in rotation. A cable intermodulation test device comprises a rotating shaft and a cable fixing device, the rotating shaft is a hollow shaft and rotates in the axial direction, the cable fixing device is of an annular structure, a cable penetrates through the cable fixing device and is fixed to the rotating shaft, the cable fixing device is detachably fixed to the rotating shaft, and a hollow hole of the annular structure of the cable fixing device right faces a hollow hole of the rotating shaft. And the axis of the annular structure deviates from the axis of the rotating shaft. In a cable intermodulation jitter test, the equipment avoids the work of manually shaking the cable, so that the radius distance of cable jitter is stable, the working efficiency of the jitter test is greatly improved, the accuracy of the cable movement time of the jitter unit is improved, and the cable intermodulation test standard of higher-quality test and research and development is met.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a cable intermodulation test device. Background Art

[0002] According to the standard YDT 2827.2-2015 "Measurement Method for Passive Intermodulation Level of RF and Microwave Devices in Wireless Communication Part 2: Coaxial Cable Assemblies", when intermodulating cables, it is necessary to simulate the passive intermodulation test under the regular jitter state of the cable. Currently, the cable jitter work is mainly completed by manual hand-cranking. The whole work process not only consumes personnel energy, but also cannot guarantee the accuracy of the jitter radius and time, which greatly reduces work efficiency. Utility Model Content

[0003] The embodiment of the present application provides a cable intermodulation test device, which solves the problem of unstable rotation of the cable in the cable intermodulation test.

[0004] The embodiment of the present application provides a cable intermodulation test device, including a rotating shaft and a cable fixing device. The rotating shaft is a hollow shaft, and the rotating shaft rotates along the axial direction. The cable fixing device is an annular structure, which accommodates the cable to pass through and fix the cable, and the cable fixing device is detachably fixed on the rotating shaft. The hollow hole of the annular structure of the cable fixing device is opposite to the hollow hole of the rotating shaft, and the axis of the annular structure is offset from the axis of the rotating shaft.

[0005] There is also an embodiment, which further includes a motor and a timer. The motor is connected to the rotating shaft, and the rotating shaft rotates under the drive of the motor. The timer is connected to the motor and is used to set the cable rotation time.

[0006] An embodiment is also included, wherein the offset distance between the axis center of the annular structure and the axis center of the rotating axis is greater than a set value.

[0007] An embodiment is also included, in which a setting value of the offset distance between the axis center of the annular structure and the axis center of the rotating axis is the cable diameter plus 1 cm.

[0008] There is also an embodiment, which includes a center scale. The center scale is fixedly arranged in the middle of the hollow hole of the rotating shaft. Small holes are arranged on different scales of the center scale, and the cable fixing device is fixed on the small holes of the center scale by tightening screws.

[0009] There is also an embodiment, which also includes a bracket. The bracket is made of aluminum and has a rectangular structure, and one end of the bracket is used for winding the cable.

[0010] An embodiment is also included, wherein the annular structure of the cable fixing device is a snap-on structure.

[0011] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0012] The process of manually shaking the cable is avoided, and the cable movement process is stable; the timer design ensures the jitter cycle time and number of jitter cycles; the work efficiency in cable inter-test jitter is comprehensively improved; the accuracy of the jitter radius is improved, and a better quality cable inter-modulation test jitter unit is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 This is a partial schematic diagram of a cable intermodulation test device from a side view according to an embodiment of the present application;

[0015] Figure 2 This is a perspective schematic diagram of a cable intermodulation test device according to an embodiment of the present application;

[0016] Figure 3 This is a schematic diagram of a cable movement mode according to an embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0018] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0019] Figure 1 This is a partial schematic diagram from a side view of a cable intermodulation test device according to an embodiment of the present application.

[0020] The cable intermodulation test equipment comprises a cable fixing device 1, a rotating shaft 2 and a center dividing ruler 3.

[0021] The rotating shaft is a hollow shaft, and the rotating shaft rotates along the axial direction.

[0022] The cable fixing device is a ring-shaped structure, which accommodates the cable to pass through and fix the cable. The cable fixing device is detachably fixed on the rotating shaft.

[0023] The hollow hole of the annular structure of the cable fixing device faces the hollow hole of the rotating shaft, and the axis center of the annular structure is offset from the axis center of the rotating shaft.

[0024] The offset distance between the axis center of the annular structure and the axis center of the rotating axis is greater than the set value cable diameter plus 1 cm.

[0025] The center scale is fixedly arranged at the middle position of the hollow hole of the rotating shaft.

[0026] Small holes are arranged on different scales of the center scale, and the cable fixing device is fixed on the small holes of the center scale by fastening screws.

[0027] Take the case where the annular structure of the cable fixing device is a buckle structure as an example.

[0028] The clips accommodate the cable entry and secure the cable.

[0029] Select the position of the clip to be fixed on the center ruler according to the diameter of the cable. The rotation radius must be greater than the cable diameter plus 1 cm. For example, if the cable diameter is 1 cm, the position of the clip to be fixed on the center ruler must be 2 cm. The clip is fixed to the 2 cm small hole on the center ruler by tightening screws.

[0030] When the rotating shaft rotates, the cable moves in a ring around the axis, and the movement radius is very stable.

[0031] It should be noted that the center ruler can also be replaced by a slide rail, the cable fixing device is fixedly connected to the slider, the slider is set to slide on the slide rail, and is fixed by bolts at different positions of the slide rail.

[0032] Figure 2 This is a perspective schematic diagram of a cable intermodulation test device according to an embodiment of the present application.

[0033] The cable intermodulation test equipment also includes a motor 4, a timer 5 and a bracket 6.

[0034] The bracket is made of aluminum and has a rectangular structure. One end of the bracket is used for winding the cable.

[0035] The other end of the bracket is covered with an aluminum-plastic plate shell 7, and the outer layer of the aluminum-plastic plate is coated with aluminum foil, which has a certain electromagnetic shielding function.

[0036] The motor is arranged inside the shell, one end of the motor is fixedly connected to the pinion gear, and the outer side of the rotating shaft is fixedly connected to the large gear. The pinion gear and the large gear are connected with parallel axes. After the motor is started, the rotational force is transmitted through the interference of the gear teeth, thereby realizing the rotation of the rotating shaft.

[0037] A bearing is arranged between the rotating shaft and the housing to ensure orderly movement of the rotating shaft.

[0038] The timer is connected to the motor and is used for setting the time and number of rotations of the cable.

[0039] The cable intermodulation test equipment is driven by a 12V DC motor and powered by a 12V power adapter. A power switch controls the power on and off.

[0040] Figure 3 This is a schematic diagram of a cable movement mode according to an embodiment of the present application.

[0041] When the cable fixing device is a ring, the cable moves in the annular direction as follows Figure 3 shown.

[0042] The cable intermodulation test equipment of the present application avoids the process of manually shaking the cable, solves the problem of cable instability during movement, makes the cable movement time and number of cycles more accurate, meets the standards of cable intermodulation testing, comprehensively improves the work efficiency in cable intermodulation jitter, and provides better quality cable intermodulation test equipment.

[0043] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A cable intermodulation test device, characterized in that: including a rotating shaft and a cable fixture; The rotating shaft is a hollow shaft, and the rotating shaft rotates along the axial direction; The cable fixing device is a ring-shaped structure, which accommodates the cable to pass through and fix the cable, and the cable fixing device is detachably fixed on the rotating shaft; The hollow hole of the annular structure of the cable fixing device faces the hollow hole of the rotating shaft, and the axis center of the annular structure is offset from the axis center of the rotating shaft.

2. The cable intermodulation test equipment according to claim 1, characterized in that: Also includes a motor and timer; The motor is connected to the rotating shaft, and the rotating shaft rotates under the drive of the motor; The timer is connected to the motor and is used for setting the rotation time of the cable.

3. The cable intermodulation test equipment according to claim 1, characterized in that: The offset distance between the axis center of the annular structure and the axis center of the rotating shaft is greater than a set value.

4. The cable intermodulation test equipment according to claim 3, characterized in that: The setting value of the offset distance between the axis center of the annular structure and the axis center of the rotating axis is the cable diameter plus 1 cm.

5. The cable intermodulation test equipment according to claim 1, characterized in that: Also includes a center scale; The center scale is fixedly arranged in the middle of the hollow hole of the rotating shaft; Small holes are arranged on different scales of the center scale, and the cable fixing device is fixed on the small holes of the center scale by fastening screws.

6. The cable intermodulation test equipment according to claim 1, characterized in that: Also includes a stand; The bracket is made of aluminum and has a rectangular structure. One end of the bracket is used for winding the cable.

7. The cable intermodulation test equipment according to claim 1, characterized in that: The annular structure of the cable fixing device is a buckle structure.

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