Cable resistance testing device

Abstract

The utility model relates to the technical field of cable physical and chemical performance testing equipment, in particular to a cable resistance testing device which comprises two bases, frames are fixedly installed on the two bases, and a clamping mechanism is arranged on one side of each frame and used for centering and clamping a cable. A current terminal and a voltage terminal are arranged on the frame, and adjusting mechanisms are arranged between the frame and the current terminal and between the frame and the voltage terminal and used for adjusting the positions of the current terminal and the voltage terminal. The clamping mechanism is matched with the adjusting mechanism, the current terminal and the voltage terminal, and the distance and the position of the current terminal and the voltage terminal can be adjusted, so that the detection of cables of different types and different thicknesses can be adapted, the detection applicability can be effectively improved, and the operation steps can be simplified.

Description

Technical Field

[0001] This utility model relates to the technical field of cable physical and chemical performance testing equipment, specifically a cable resistance testing device. Background Technology

[0002] Cables are a general term for items such as optical cables and electrical cables. Cables have many uses, primarily for control installation, equipment connection, and power transmission, making them a common and indispensable item in daily life. A cable mainly consists of a conductor and a protective layer surrounding it. After production, various data points of the cable need to be tested to ensure product quality and safe use.

[0003] In cable testing, it is essential to test the resistance of the cable to ensure that cables of different types and uses meet the corresponding resistance standard range. Since the resistance of cables is low, a four-wire system is often used in cable resistance testing to ensure accuracy, that is, the current line and voltage line are separated to eliminate lead wire errors.

[0004] However, commonly used testing devices only measure the length of a cable by clamping both ends. When dealing with multi-core cables, this requires clamping both ends of a single cable multiple times to measure the resistance of each individual core, which is time-consuming and labor-intensive. Therefore, we propose a cable resistance testing device. Utility Model Content

[0005] The purpose of this utility model is to provide a cable resistance testing device that solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cable resistance testing device includes two bases, each base having a frame fixedly mounted on it. A clamping mechanism is provided on one side of each frame for centering and clamping the cable.

[0008] The frame is provided with current terminals and voltage terminals, and an adjustment mechanism is provided between the frame and the current terminals and voltage terminals for adjusting the position of the current terminals and voltage terminals.

[0009] Preferably, the adjustment mechanism includes a rotating platform, which is rotatably connected to the frame. A fixed platform is fixedly installed on the rotating platform, and a mounting bracket is rotatably installed on the fixed platform. The mounting bracket is detachably connected to the current terminal.

[0010] Preferably, an adjusting gear ring is rotatably mounted on the rotating platform, a fixed gear ring is provided inside the rotating platform, a planetary gear is slidably mounted on the rotating platform, a second mounting bracket is rotatably mounted on the planetary gear, and the second mounting bracket is detachably connected to the voltage terminal.

[0011] Preferably, a mounting bracket is fixedly mounted on the second mounting bracket, and a locking rod is slidably mounted inside the mounting bracket, the locking rod being adapted to the planetary gear.

[0012] Preferably, the planetary gears are meshed with the fixed gear ring and the adjusting gear ring respectively, and the adjusting gear ring is meshed with a drive gear on its outer side.

[0013] Preferably, a limiting seat is fixedly installed on one side of the frame, and a scale rod is slidably installed inside the limiting seat.

[0014] Preferably, the clamping mechanism includes a bidirectional lead screw, which is rotatably connected to the frame, and two clamping seats are threaded onto the bidirectional lead screw.

[0015] By employing the above technical solution, this utility model provides a cable resistance testing device that has at least the following beneficial effects:

[0016] (1) This utility model, through the clamping mechanism in conjunction with the adjustment mechanism, current terminal and voltage terminal, can adjust the spacing and position of the current terminal and voltage terminal, thereby adapting to the detection of different types and thicknesses of cables, effectively improving the applicability of the detection and simplifying the operation steps.

[0017] (2) This utility model uses a clamping mechanism in conjunction with a base, frame, limit seat and scale rod to make the two bases on the same horizontal line, which makes the reading of the cable detection length more accurate, and at the same time makes it easier to center and fix the cable, and facilitates the resistance detection of the cable. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the base and frame structure of this utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the base and frame structure of this utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the adjustment mechanism structure of this utility model;

[0023] Figure 5 This is an enlarged schematic diagram of point A of this utility model.

[0024] In the diagram: 1. Base; 2. Frame; 3. Clamping mechanism; 4. Adjustment mechanism; 5. Current terminal; 6. Voltage terminal; 7. Limit seat; 8. Scale rod;

[0025] 31. Clamping seat; 32. Double-acting lead screw;

[0026] 41. Rotating table; 42. Adjusting gear ring; 43. Driving gear; 44. Fixed platform; 45. Mounting bracket one; 46. Fixed gear ring; 47. Planetary gear; 48. Mounting bracket two; 49. Card holder; 410. Card lever. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 A cable resistance testing device includes a base 1, which has a truncated pyramidal structure that is smaller at the top and larger at the bottom, providing better support and stability during use. A frame 2 is fixedly mounted on the base 1. The frame 2 has a square structure and round holes on both sides for cables to pass through, facilitating cable fixing.

[0029] Please see Figures 1-2 There are two bases 1 and two frames 2, and each frame 2 is equipped with a clamping mechanism 3. The two clamping mechanisms 3 are used to center and clamp the two ends of the cable respectively, which facilitates the resistance test of the cable. The clamping mechanism 3 includes two clamping seats 31, and the clamping seats 31 are provided with "V" shaped grooves. The two "V" shaped grooves are arranged opposite each other, which facilitates the fixing of cables of different diameters.

[0030] A bidirectional lead screw 32 is rotatably installed inside the frame 2. The bidirectional lead screw 32 is threadedly connected to the clamping seat 31. The rotation of the bidirectional lead screw 32 controls the relative and opposite movement of the two clamping seats 31, thereby controlling the clamping and release of the cable by the clamping seats 31.

[0031] Please see Figures 3-5An adjustment mechanism 4 is provided on the frame 2. The adjustment mechanism 4 includes a rotating platform 41, which is rotatably mounted on the side of the frame 2 away from the clamping seat 31. The rotating platform 41 has a circular ring structure, and its internal diameter is consistent with the opening of the frame 2 to facilitate cable passage. An adjustment gear ring 42 is rotatably mounted on the rotating platform 41. The inner and outer sides of the adjustment gear ring 42 are provided with racks. The outer side of the adjustment gear ring 42 is meshed with a drive gear 43. A motor is fixedly mounted on the drive gear 43. The motor controls the rotation of the drive gear 43, and the meshing of the drive gear 43 and the adjustment gear ring 42 drives the adjustment gear ring 42 to rotate.

[0032] A fixed platform 44 is fixedly installed inside the rotating stage 41. A mounting bracket 45 is rotatably mounted on the fixed platform 44. A current terminal 5 is detachably mounted on the mounting bracket 45. One end of the current terminal 5 is connected to a power supply or constant current source that can provide a stable current output, supplying the required test current to the test circuit. This ensures sufficient and stable current flows through the cable under test for accurate measurement of cable resistance. The endpoint of the current terminal 5 contacts the cable. The power supply or constant current source, the current terminal 5, and the cable form a current path, thereby providing the required test current to the test circuit and ensuring sufficient and stable current flows through the cable under test for accurate measurement of cable resistance.

[0033] A fixed gear ring 46 is installed inside the rotating platform 41, and a planetary gear 47 is slidably mounted inside the rotating platform 41. The planetary gear 47 is meshed with both the adjusting gear ring 42 and the fixed gear ring 46, so that the rotation of the adjusting gear ring 42 can drive the planetary gear 47 to rotate synchronously along the fixed gear ring 46, thereby allowing adjustment of the relative distance and angle between the planetary gear 47 and the fixed platform 44. A mounting bracket 2 48 is rotatably mounted on the planetary gear 47, and a voltage terminal 6 is detachably mounted on the mounting bracket 2 48. The voltage terminal 6 is mainly used to connect voltage measuring instruments such as voltmeters or potentiometers. These instruments can accurately measure the minute voltage changes at both ends of the cable under test, providing accurate voltage data for calculating the cable resistance. The voltage terminal 6 must be in close contact with both ends of the cable under test to avoid including the resistance of the current leads, which would affect the measurement accuracy. At the same time, the current terminal 5 and the voltage terminal 6, located on the same rotating platform 41, have the same polarity.

[0034] The relative distance and angle between the planetary gear 47 and the fixed platform 44 can be adjusted to regulate the relative distance and angle between the current terminal 5 and the voltage terminal 6, making it easier and faster to test the resistance of multi-core cables by testing each individual cable core separately.

[0035] A mounting bracket 49 is fixedly installed on mounting frame 48. A locking rod 410 is slidably mounted on the mounting bracket 49. The locking rod 410 is compatible with the planetary gear 47, allowing the locking rod 410 to engage between the teeth of the planetary gear 47, thus locking the planetary gear 47 and preventing it from rotating. At this time, the motor starts and drives the drive gear 43 to rotate. Since the planetary gear 47 is locked, it no longer rotates. The planetary gear 47 plays a role in transmitting force, driving the rotating table 41 to rotate along the frame 2, thereby adjusting the position of the current terminal 5 and the voltage terminal 6, facilitating the testing of cable cores at different positions.

[0036] Please see Figure 1 A limiting seat 7 is provided on one side of frame 2, and a scale rod 8 is slidably installed inside the limiting seat 7. The limiting seat 7 and the scale rod 8 ensure that the two frames 2 are horizontally aligned, so that the cable under test will not be offset when fixed. The scale rod 8 makes the detection of cable length more accurate, avoiding the influence of inaccurate cable length measurement on the cable resistance test results. A thermometer and a hygrometer are provided on the base 1 for real-time monitoring of temperature and humidity during the test, and for calculation and correction after the resistance test.

[0037] The working principle of a cable resistance testing device is as follows:

[0038] The distance between the two bases 1 is adjusted by reading the scale rod 8 to meet the length requirements during cable testing. Since the scale rod 8 is slidably connected within the two limit seats 7, the two bases 1 are on the same horizontal line, making cable length testing more accurate. The cable length during testing can be determined by reading the scale rod 8.

[0039] The two ends of the cable are passed through the openings of the two frames 2, and the cable is taut. The rotation of the bidirectional lead screw 32 causes relative displacement of the two clamping seats 31, clamping the cable. When the cable is a single-core cable, the current terminal 5 and voltage terminal 6 are respectively in contact with the cable surface, with the contact points isolated. Current is output from a power supply or constant current source. The power supply or constant current source, current terminal 5, and cable form a current path to ensure sufficient and stable current flows through the cable under test. The cable voltage can then be read using a voltmeter or potentiometer connected to voltage terminal 6. The cable resistance can then be calculated from this data.

[0040] When the cable is a multi-core cable, the motor is started, and the motor drives the drive gear 43 to rotate. The drive gear 43 drives the adjusting gear ring 42 to rotate. The adjusting gear ring 42, through meshing with the planetary gear 47, drives the planetary gear 47 to rotate along the fixed gear ring 46, and the direction of travel is the same as the rotation direction of the adjusting gear ring 42. By changing the position of the planetary gear 47, the relative distance and angle between the planetary gear 47 and the fixed platform 44 are adjusted. The change in the relative distance and angle between the planetary gear 47 and the fixed platform 44 can adjust the relative distance and angle between the current terminal 5 and the voltage terminal 6. Then, by rotating and adjusting the mounting bracket 1 45 and mounting bracket 2 48, the current terminal 5 and the voltage terminal 6 can make contact with the cable surface.

[0041] This makes it easier and faster to test individual cable cores when dealing with multi-core cables of different models, without the need to adjust the cable.

[0042] By sliding the lever 410, the lever 410 is engaged in the planetary gear 47, making the planetary gear 47 fixed and unable to rotate. At this time, the rotation of the drive gear 43 will drive the entire turntable 41 to rotate, so that after the detection of a single cable core is completed, it can quickly switch to the next cable core for detection, which is more convenient and faster.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable resistance testing device, characterized by: Including two bases (1), two said base (1) are fixedly installed with frame (2), one side of frame (2) is provided with clamping mechanism (3), for centering clamping cable; The frame (2) is provided with current terminal (5) and voltage terminal (6), the frame (2) and current terminal (5), voltage terminal (6) are provided with adjusting mechanism (4), for adjusting the position of current terminal (5), voltage terminal (6).

2. The cable resistance testing device of claim 1, wherein: The adjusting mechanism (4) includes a rotating table (41), the rotating table (41) is rotatably connected between the frame (2), the rotating table (41) is fixedly installed with a fixed table (44), the fixed table (44) is rotatably installed with a mounting frame one (45), the mounting frame one (45) is detachably connected between the current terminal (5).

3. A cable resistance testing device as claimed in claim 2, wherein: The rotating table (41) is rotatably installed with an adjusting gear ring (42), the rotating table (41) is provided with a fixed gear ring (46), the rotating table (41) is slidably installed with a planetary gear (47), the planetary gear (47) is rotatably installed with a mounting frame two (48), the mounting frame two (48) is detachably connected between the voltage terminal (6).

4. A cable resistance testing device as claimed in claim 3, wherein: The mounting frame two (48) is fixedly installed with a clamping seat (49), the clamping seat (49) is slidably installed with a clamping rod (410), the clamping rod (410) is matched between the planetary gear (47).

5. The cable resistance testing device of claim 3, wherein: The planetary gear (47) is respectively engaged with the fixed gear ring (46) and the adjusting gear ring (42), and the adjusting gear ring (42) is engaged with the driving gear (43) outside.

6. The cable resistance testing device of claim 1, wherein: One side of the frame (2) is fixedly installed with a limiting seat (7), and the limiting seat (7) is slidably installed with a scale rod (8).

7. The cable resistance testing device of claim 1, wherein: The clamping mechanism (3) includes a bidirectional screw rod (32), the bidirectional screw rod (32) is rotatably connected between the frame (2), the bidirectional screw rod (32) is threadedly connected with two clamping seats (31).

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