Cable low-temperature test box

Abstract

The utility model discloses a cable low-temperature test box, relates to the technical field of cable test equipment, and aims to solve the technical problems that in the prior art, only bending and stretching tests are adopted for low-temperature tests of cables, the cables are often twisted and stretched in the installation, laying and use processes, and the processes are not specially tested during the tests, so that the test time is shortened. Test data are imperfect, and the test effect is not good enough. The low-temperature test box body comprises a test work box, two groups of torsion mechanisms are arranged in the test work box, each torsion mechanism comprises a fixed seat, a fastener and a servo motor, a driving end of each servo motor is fixedly connected with a worm, a large gear coaxially connected with the fixed seat is arranged in the test work box, and the large gear is coaxially connected with the fixed seat. The lower portion of the large gear is connected with a small gear in an engaged mode, one side of the small gear is coaxially connected with a worm gear, and the worm gear is connected with the worm in an engaged mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable test equipment technical field, concretely is a cable low temperature test box. BACKGROUND

[0002] At present, when the electric wire and cable are experimented, the appropriate length is selected from the sample and the sheath is removed, so that the property change of the internal material is observed, and is placed in the high and low temperature test box, the core is detected through the way of gradually heating and cooling, and after a period of recovery at normal temperature between detection, is transferred to the stretching and bending experimental machine to further detect the property change of the material at high and low temperature,

[0003] For example, the announcement number is CN220339870U, a kind of electric wire and cable high, low temperature performance test device, to solve the current cable in high and low temperature performance test on material characteristics influence, need to combine multiple test equipment, not only time-consuming and laborious, and intermediate process dismounting and reinstalling are complicated, and test efficiency is low The technical problem, including high and low temperature test box main part and the door of hinge installation in one side of high and low temperature test box main part, the working bin is opened in the high and low temperature test box main part, and the working bin bottom end is fixedly installed with the bending test component for being used to the bending test of wire rod in center, the bending test component includes base, the sliding slot is opened in the both sides of base top end center, and the screw rod is rotatably installed between the both sides in sliding slot, the end of screw rod extending out of sliding slot is connected with gear shift one,

[0004] The above application has the functions of bending and torsional stretching detection, and does not need to be taken out by the equipment, which saves time and labor, and the cable is often subjected to torsional stretching during installation, laying and use, and the process is not specially tested during testing, the test data is not perfect, and the test effect is not good, therefore, there is an urgent need to develop a cable low temperature test box to help people solve the existing problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of cable low temperature test box, to solve the low temperature test for cable currently proposed in the above background art, only adopt bending and stretching test, and cable is often subjected to torsional stretching during installation, laying and use, and the process is not specially tested during testing, the test data is not perfect, and the test effect is not good.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature test chamber for cables, comprising a low-temperature test chamber body, the low-temperature test chamber body including a test working chamber, the test working chamber being provided with two sets of torsion mechanisms, the torsion mechanism including a fixed base, a fastener and a servo motor, the drive end of the servo motor being fixedly connected to a worm gear, the test working chamber being provided with a large gear coaxially connected to the fixed base, a small gear being meshed below the large gear, a worm wheel being coaxially connected to one side of the small gear, the worm wheel being meshed with the worm gear.

[0007] The above technical solution uses a torsion mechanism to clamp both ends of the cable under test. Two sets of torsion mechanisms can torsion the cable, causing it to twist in a low-temperature environment. This simulates the torsion phenomenon caused by wind force during cable use and the torsion phenomenon that occurs during laying, thus providing more comprehensive test data, resulting in better test results and improved test effectiveness.

[0008] In a preferred embodiment, the present invention can be further configured such that the fastener includes a fixing hoop and a pressure hoop, the fixing hoop being fixedly connected to the fixing seat, and the pressure hoop being connected to the fixing hoop by bolts.

[0009] The above technical solution uses clamps and fixing clamps to hold and fix the cable.

[0010] In a preferred embodiment, the present invention can be further configured as follows: a longitudinal moving device is provided inside the test chamber, a tensioner is slidably connected to the longitudinal moving device, a screw is rotatably connected inside the longitudinal moving device, a screw seat is threadedly connected to the outer side of the screw, and the tensioner is fixedly connected to the screw seat.

[0011] The above technical solution uses a longitudinal movement device to drive the tensioner to move longitudinally. The cable passes through the tensioner, and the tensioner pulls and bends the cable to simulate the bending and twisting phenomenon that occurs during the use of the cable. This structure is simple, reliable, and easy to promote and use.

[0012] In a preferred embodiment, the present invention can be further configured as follows: a driving device is fixedly installed inside the test chamber; the driving end of the driving device is connected to a driving shaft; one end of the driving shaft is fixedly connected to a driving gear; one end of the screw is fixedly connected to a driven gear; and the driven gear meshes with the driving gear.

[0013] Through the above technical solution, the drive device drives the drive gear to rotate through the drive shaft, and the drive gear drives the screw to rotate through the driven gear.

[0014] In a preferred embodiment, the present invention can be further configured such that: a door is provided on the front end face of the test chamber, an operation panel is provided on the body of the low temperature test chamber, and a heat dissipation grille is provided on the test chamber.

[0015] The above technical solution includes a viewing window on the door to facilitate observation of the test results.

[0016] In a preferred embodiment, the present invention can be further configured such that: the interior of the test chamber is equipped with a refrigeration unit, which includes a compressor and a condenser.

[0017] The above technical solution utilizes a refrigeration unit to provide cold air to the test station of the test chamber.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model utilizes a torsion mechanism to clamp both ends of the cable under test. Two sets of torsion mechanisms can torsion the cable, causing it to twist in a low-temperature environment. This simulates the torsion phenomenon caused by wind force during cable use and the torsion phenomenon that occurs during laying, thereby providing more comprehensive test data, resulting in better test results for the cable and improving the test effectiveness.

[0020] 2. This utility model utilizes a longitudinal movement device to drive the tensioner to move longitudinally. The cable passes through the tensioner, and the tensioner pulls and bends the cable to simulate the bending and twisting phenomenon that occurs during cable use. This structure is simple, reliable, and easy to promote and use. Attached Figure Description

[0021] Figure 1 This is a front view of a low-temperature cable test chamber according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the test chamber of this utility model;

[0023] Figure 3 This is an enlarged schematic diagram of point A in the figure of this utility model;

[0024] Figure 4 This is a schematic diagram of the fastener of this utility model;

[0025] Figure 5 This is an enlarged schematic diagram of point B in the figure of this utility model;

[0026] Figure 6 This is a front view of the tensioner of this utility model.

[0027] In the diagram: 1. Low-temperature test chamber body; 2. Test working chamber; 3. Heat dissipation grille; 4. Control panel; 5. Chamber door; 6. Longitudinal movement device; 7. Tensioner; 8. Drive device; 9. Drive shaft; 10. Servo motor; 11. Fixed base; 12. Fastener; 13. Large gear; 14. Small gear; 15. Worm; 16. Worm wheel; 17. Screw; 18. Screw seat; 19. Drive gear; 20. Driven gear; 21. Fixed clamp; 22. Pressure clamp. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Please see Figure 1 and Figure 3 This utility model provides an embodiment of a low-temperature cable test chamber, comprising a low-temperature test chamber body 1, which includes a test working chamber 2. The test working chamber 2 is equipped with two sets of torsion mechanisms, each including a fixed base 11, a fastener 12, and a servo motor 10. A worm gear 15 is fixedly connected to the drive end of the servo motor 10. A large gear 13, coaxially connected to the fixed base 11, is located inside the test working chamber 2. A small gear 14 is meshed below the large gear 13. A worm wheel 16 is coaxially connected to one side of the small gear 14. The worm wheel 16 meshes with the worm gear 15. The servo motor 10 is fixedly connected to the test working chamber 2. A shaft connected to the large gear 13 is rotatably connected to the test working chamber 2. The shaft connecting the small gear 14 and the worm wheel 16 is supported and connected to the test working chamber 2 via a bearing.

[0032] Please see Figure 4 The fastener 12 includes a fixing hoop 21 and a pressure hoop 22. The fixing hoop 21 is fixedly connected to the fixing seat 11, and the pressure hoop 22 is connected to the fixing hoop 21 by bolts.

[0033] Please see Figure 1 and Figure 5 The test chamber 2 is equipped with a longitudinal movement device 6, a tensioner 7 is slidably connected to the longitudinal movement device 6, a screw 17 is rotatably connected inside the longitudinal movement device 6, a screw seat 18 is threadedly connected to the outside of the screw 17, the tensioner 7 is fixedly connected to the screw seat 18, and the longitudinal movement device 6 is fixedly connected to the test chamber 2.

[0034] Please see Figure 2 and Figure 5 A drive device 8 is fixedly installed inside the test chamber 2. The drive end of the drive device 8 is connected to a drive shaft 9. One end of the drive shaft 9 is fixedly connected to a drive gear 19. One end of the screw 17 is fixedly connected to a driven gear 20. The driven gear 20 and the drive gear 19 are meshed together.

[0035] Please see Figure 1 The front end of the test chamber 2 is provided with a door 5, the body of the low temperature test chamber 1 is provided with an operation panel 4, and the test chamber 2 is provided with a heat dissipation grille 3.

[0036] Please see Figure 2 The test chamber 2 is equipped with a refrigeration unit, which includes a compressor and a condenser. The refrigeration unit is located at the bottom of the test chamber 2, and the test work area is located above the test chamber 2. The work area and the space where the refrigeration unit is located are connected by pipes for supplying cold air to the test work area.

[0037] Working principle: During use, the cable to be tested is cut to a suitable length and placed inside the test chamber 2. Two sets of torsion mechanisms clamp both ends of the cable, and the cable passes through the middle area of ​​the tensioner 7. The cable end is placed between the fixing clamp 21 and the pressure clamp 22, and the pressure clamp 22 is fixed with bolts to clamp and secure the cable end. Then, a refrigeration unit supplies cold air to the test area. After the temperature reaches the preset value, the cable undergoes tensile, bending, and torsion tests. The drive device 8 drives the drive shaft 9 to rotate, and the drive shaft 9 drives... Gear 19 and driven gear 20 drive screw 17 to rotate. The rotation of screw 17 drives screw seat 18 to move longitudinally. Screw seat 18 drives tensioner 7 to move longitudinally, thereby stretching and bending the cable. Servo motor 10 drives worm 15 to rotate. Worm 15 drives pinion 14 to rotate through worm wheel 16. Pinion 14 drives fixed seat 11 to rotate through large gear 13. Fixed seat 11 drives fastener 12 to rotate. The two sets of torsion mechanisms rotate in opposite directions, thereby torsion the cable and completing the low-temperature test of the cable.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-temperature test chamber for cables, comprising a low-temperature test chamber body (1), characterized in that: The low-temperature test chamber body (1) includes a test work chamber (2). The test work chamber (2) is equipped with two sets of torsion mechanisms. The torsion mechanism includes a fixed seat (11), a fastener (12), and a servo motor (10). The drive end of the servo motor (10) is fixedly connected to a worm gear (15). The test work chamber (2) is equipped with a large gear (13) coaxially connected to the fixed seat (11). A small gear (14) is meshed below the large gear (13). A worm wheel (16) is coaxially connected to one side of the small gear (14). The worm wheel (16) is meshed with the worm gear (15).

2. The low-temperature test chamber for cables according to claim 1, characterized in that: The fastener (12) includes a fixing hoop (21) and a pressure hoop (22). The fixing hoop (21) is fixedly connected to the fixing seat (11), and the pressure hoop (22) is connected to the fixing hoop (21) by bolts.

3. The low-temperature test chamber for cables according to claim 1, characterized in that: The test work box (2) is equipped with a longitudinal movement device (6), a tensioner (7) is slidably connected to the longitudinal movement device (6), a screw (17) is rotatably connected inside the longitudinal movement device (6), a screw seat (18) is threadedly connected to the outside of the screw (17), and the tensioner (7) is fixedly connected to the screw seat (18).

4. The low-temperature test chamber for cables according to claim 3, characterized in that: The test work box (2) is fixedly installed with a drive device (8). The drive end of the drive device (8) is connected to a drive shaft (9). One end of the drive shaft (9) is fixedly connected to a drive gear (19). One end of the screw (17) is fixedly connected to a driven gear (20). The driven gear (20) meshes with the drive gear (19).

5. A low-temperature cable test chamber according to claim 1, characterized in that: The test chamber (2) has a door (5) on its front end, an operation panel (4) on its body (1), and a heat dissipation grille (3) on its body.

6. A low-temperature cable test chamber according to claim 1, characterized in that: The test chamber (2) is equipped with a refrigeration unit, which includes a compressor and a condenser.

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