Cable cold bending testing machine for frequency conversion system

Abstract

The utility model discloses a cable cold bending testing machine for a frequency conversion system, which is applied to the technical field of cable cold bending testing machines, and is characterized in that the cable cold bending testing machine comprises a testing box and a testing cavity arranged in the testing box, and a low-temperature frequency conversion system used for controlling the temperature in the testing cavity is fixedly arranged in the testing cavity. A bending test device is fixedly arranged in the test cavity; the bending test device comprises a test frame fixedly connected in the test cavity and a first cable fixing clamp fixedly connected to the bottom of the test frame and used for fixing one end of a cable, the top of the test frame is rotationally connected with an eccentric rotating disc based on a rebound assembly, the eccentric rotating disc is fixedly connected with a second cable fixing clamp, and the second cable fixing clamp is fixedly connected with the test frame. A traction assembly for driving the eccentric rotating disc to rotate is fixedly connected in the test box; the cable testing device has the technical effects that the influence of a testing environment on electrical elements is reduced, and the stability of a cable testing process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable cold bending testing machine technical field, in particular to a kind of cable cold bending testing machine for frequency conversion system. BACKGROUND

[0002] Cable cable is a kind of wire product to transmit electric (magnetic) energy, information and realize electromagnetic energy conversion, cable is often bent into various shapes in use, after repeated bending, the wire core in cable can be broken and thus lead to cable circuit break, so that existing high and low temperature cable needs to be bent fatigue tested after research and development, to investigate the fracture of cable after bending at a certain angle, times and temperature.

[0003] At present, the Chinese utility model with the announcement number CN220751874U discloses a high and low temperature cable bending fatigue test device, which comprises a supporting table, a rotating rod is rotatably arranged in the supporting table, a rotating disc is fixedly arranged outside the rotating rod, a T-shaped slide is formed in the supporting table, a bidirectional screw rod is rotatably installed on the inner wall of the T-shaped slide, and symmetrical threaded blocks are sleeved outside the bidirectional screw rod.

[0004] The existing utility model can automatically bend the cable to be tested by the device by arranging the rotating disc, rotating rod, gear, toothed plate, limiting groove and electric push rod, and the bending angle of the cable can be adjusted according to the extension length of the electric push rod, but since the test environment of the cable is in a low-temperature environment, the electric push rod and other electrical components are affected to some extent, the damage of the electrical components is accelerated, and then the bending test process of the cable is affected, so it is necessary to improve. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of cable cold bending testing machine for frequency conversion system, its advantage is to reduce the influence of test environment on electrical component, guarantee cable test process stability.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a kind of cable cold bending testing machine for frequency conversion system, including test box and test cavity being opened in the test box, low temperature frequency conversion system for controlling the temperature in the test cavity is fixedly arranged in the test cavity, and bending test device is fixedly arranged in the test cavity;The bending test device includes test frame fixedly connected in the test cavity and first cable fixing clamp for fixing one end of cable fixedly connected to the bottom of the test frame, the eccentric rotating disc is rotatably connected based on rebound assembly on the top of the test frame, second cable fixing clamp is fixedly connected on the eccentric rotating disc, and traction assembly for rotating the eccentric rotating disc is fixedly connected in the test box.

[0007] The utility model further sets up: the traction assembly includes the traction rope of fixed connection in the eccentric rotating disc and the traction motor of fixed connection in the test box, the rotating shaft of traction motor is fixedly connected with the traction disc for traction the traction rope, the test box is opened with the through hole that communicates the test cavity, supplies the traction rope and passes.

[0008] The utility model further sets up: the traction motor uses servo motor, the traction motor is away from the test cavity setting.

[0009] The utility model further sets up: the traction rope uses aramid fiber and makes.

[0010] The utility model further sets up: the test frame is equipped with the parallel setting cable bending axle between the first cable fixed clamp with the second cable fixed clamp, the cable bending axle is spaced apart and is arranged, and the cable to be measured passes between the cable bending axle.

[0011] The utility model further sets up: the second cable fixed clamp can be adjusted fixed connection on the eccentric rotating disc based on locking adjusting assembly, the locking adjusting assembly includes the arc adjusting groove of opening in the eccentric rotating disc and the sliding adjusting block of sliding adjusting connection in the arc adjusting groove, and the arc center of arc adjusting groove coincides with the rotation center of eccentric rotating disc, the sliding adjusting block is fixedly connected with locking screw rod, and the locking nut is rotatably connected on locking screw rod, and the second cable fixed clamp is fixedly connected with the one end of locking screw rod away from the sliding adjusting block.

[0012] The utility model further sets up: the rebound assembly uses rebound torsional spring.

[0013] Summarized above, the utility model has following beneficial effect:

[0014] 1.bend test device realizes the bending test of the cable to be measured by setting eccentric rotating disc on the test frame and rotating eccentric rotating disc by traction assembly, realizes the downward traction of traction rope by rotating traction disc on the rotating shaft of traction motor and realizing the rotation of eccentric rotating disc by traction motor, realizes the bending test of cable to be measured by traction rope, realizes the reciprocating bending test of the cable to be measured by rebound assembly, sets up traction motor outside test cavity and realizes the driving of eccentric rotating disc by traction rope, does not set up electrical element in test cavity, thereby avoids the influence of low temperature or high temperature environment in test cavity to traction motor or electrical element, reduces the possibility of traction motor damage, guarantees the stability of cable test process;

[0015] 2. By setting the second cable fixing clamp, the locking adjusting assembly can be adjusted and fixed on the eccentric rotating disc, the two ends of the cable to be tested are fixed by the first cable fixing clamp and the second cable fixing clamp, the cable to be tested passes between the cable bending shafts, the bending angle of the cable to be tested is adjusted by adjusting the position of the second cable fixing clamp on the eccentric rotating disc, and the adjustment is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a structural schematic view of the test box of the embodiment;

[0017] Fig. 2 is a structural schematic view of the whole of the embodiment;

[0018] Fig. 3 is a structural sectional view of the locking adjusting assembly of the embodiment.

[0019] Fig. 1 is a structural schematic view of the test box of the embodiment; Fig. 2 is a structural schematic view of the test cavity of the embodiment; Fig. 3 is a structural schematic view of the test frame of the embodiment; Fig. 4 is a structural schematic view of the first cable fixing clamp of the embodiment; Fig. 5 is a structural schematic view of the rebound assembly of the embodiment; Fig. 6 is a structural schematic view of the eccentric rotating disc of the embodiment; Fig. 7 is a structural schematic view of the second cable fixing clamp of the embodiment; Fig. 8 is a structural schematic view of the traction assembly of the embodiment; Fig. 9 is a structural schematic view of the locking adjusting assembly of the embodiment. DETAILED DESCRIPTION

[0020] The utility model will be further explained in detail in combination with the drawings.

[0021] Embodiment:

[0022] Reference Figs. 1-3The utility model relates to a cable cold bending test machine for variable frequency system, including test box 1 and the test chamber 11 that opens in test box 1, be fixed with low temperature variable frequency system for controlling the temperature in test chamber 11 in test chamber 11, low temperature variable frequency system realizes the bending test of cable under different temperature through the temperature in test chamber 11 is controlled to realize the bending fracture condition of test cable under variable frequency system, also can set up high temperature variable frequency system to realize high temperature test, be fixed with bending test device in test chamber 11, bending test device includes the test frame 2 of fixed connection in test chamber 11 and the first cable fixed clamp 3 for fixing one end of cable of fixed connection in the bottom of test frame 2, eccentric rotating disc 5 is rotatably connected with on the top of test frame 2 based on rebound component 4, and the second cable fixed clamp 6 is fixedly connected on eccentric rotating disc 5, and the parallel setting cable bending shaft 8 between the first cable fixed clamp 3 and the second cable fixed clamp 6 of test frame 2 are equipped with, and the interval is set between cable bending shaft 8, and the cable to be measured is passed between cable bending shaft 8, and the traction component 7 of driving eccentric rotating disc 5 rotation is fixedly connected in test box, and the two ends of the cable to be measured are fixed through the first cable fixed clamp 3 and the second cable fixed clamp 6, and the cable to be measured is passed between cable bending shaft 8, and the cable to be measured is driven to bend through the traction component 7 driving eccentric rotating disc 5 rotation to realize the position of the cable to be measured close to the second cable fixed clamp 6 is bent.In the embodiment, rebound component 4 uses rebound torsional spring.

[0023] Reference Figs. 1-2 , specifically, traction component 7 includes fixedly connected on eccentric rotating disc 5 traction rope 71 and fixedly connected in test box 1 traction motor 72, and the traction disc 73 for traction traction rope 71 is fixedly connected on the rotating shaft of traction motor 72, and the through hole 74 that links to each other test chamber 11 is opened in test box 1 to be used for the traction rope 71 is passed through, and the traction disc 73 is driven to rotate through traction motor 72 to realize the traction of traction rope 71 is driven downward, in turn realize the rotation of eccentric rotating disc 5 and realize the bending test of cable, and the recovery of eccentric rotating disc 5 is realized through rebound component 4 to realize the bending test of the cable to be measured reciprocating, and the traction of eccentric rotating disc 5 is realized through traction rope 71 by setting traction motor 72 outside test chamber 11, and there is no electrical element in test chamber 11, to avoid the influence of low temperature or high temperature environment in test chamber 11 to traction motor 72 or electrical element, reduce the possibility of traction motor 72 damage.In the embodiment, traction motor 72 uses servo motor to ensure the precision of the bending angle of cable each time, and traction motor 72 is away from test chamber 11 to avoid the influence of low temperature in test chamber 11 to traction motor 72, improve the service life of traction motor 72, and traction rope 71 is made of aramid fiber to ensure that traction rope 71 has enough low-temperature-resistant characteristics, sufficient strength and wear resistance.

[0024] ReferenceFig. 3 Specifically, the second cable fixing clamp 6 is adjustably fixed to the eccentric rotating disc 5 based on the locking adjusting assembly 9, the locking adjusting assembly 9 comprises an arc adjusting slot 91 opened on the eccentric rotating disc 5 and a sliding adjusting block 92 slidingly connected in the arc adjusting slot 91, the arc center of the arc adjusting slot 91 coincides with the rotating center of the eccentric rotating disc 5, a locking screw 93 is fixedly connected on the sliding adjusting block 92, a locking nut 94 is rotatably connected on the locking screw 93, the angle of cable bending is adjusted by adjusting the position of the sliding adjusting block 92 in the arc adjusting slot 91, after the adjustment is completed, the locking nut 94 is abutted against the surface of the eccentric rotating disc 5 by rotating the locking nut 94 to realize locking and fixing, and the second cable fixing clamp 6 is fixedly connected on the end of the locking screw 93 far away from the sliding adjusting block 92.

[0025] Brief description of the use process: the two ends of the cable to be tested are fixed by the first cable fixing clamp 3 and the second cable fixing clamp 6, the cable to be tested passes through between the cable bending shafts 8, the traction motor 72 drives the traction disc 73 to rotate to realize driving the traction rope 71 to be pulled downward, then the eccentric rotating disc 5 is driven to rotate to realize the bending test of the cable, and the eccentric rotating disc 5 is recovered by the rebound assembly 4 to realize the reciprocating bending test of the cable to be tested.

[0026] The embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and the person skilled in the art can make a modification with creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A cable cold-bending testing machine for variable frequency system, comprising a test box (1) and a test cavity (11) opened in the test box (1), wherein a low-temperature variable frequency system for controlling the temperature in the test cavity (11) is fixedly arranged in the test cavity (11), and a bending test device is fixedly arranged in the test cavity (11); characterized in that, The bending test device comprises a test frame (2) fixedly connected in the test cavity (11), a first cable fixing clamp (3) fixedly connected at the bottom of the test frame (2) and used for fixing one end of a cable, an eccentric rotating disc (5) rotationally connected at the top of the test frame (2) based on a rebound assembly (4), a second cable fixing clamp (6) fixedly connected on the eccentric rotating disc (5), and a test box (1) having the traction assembly (7) fixedly connected therein and used for driving the eccentric rotating disc (5) to rotate.

2. A cable cold-bending tester for a variable frequency system according to claim 1, wherein The traction assembly (7) comprises a traction rope (71) fixedly connected on the eccentric rotating disc (5) and a traction motor (72) fixedly connected in the test box (1), and a traction disc (73) for traction of the traction rope (71) is fixedly connected on the rotating shaft of the traction motor (72), and the test box (1) is provided with a through hole (74) communicating with the test cavity (11) and through which the traction rope (71) penetrates.

3. A cable cold-bending tester for a variable frequency system according to claim 2, wherein The traction motor (72) is a servo motor, and the traction motor (72) is arranged away from the test cavity (11).

4. A cable cold-bending tester for a variable frequency system according to claim 2, wherein The traction rope (71) is made of aramid fiber.

5. A cable cold-bending test machine for a variable frequency system according to claim 1, wherein The test frame (2) is provided with cable bending shafts (8) arranged side by side between the first cable fixing clamp (3) and the second cable fixing clamp (6), the cable bending shafts (8) are arranged at intervals, and the cable to be tested penetrates between the cable bending shafts (8).

6. A cable cold-bending test machine for a variable frequency system according to claim 1, wherein The second cable fixing clamp (6) is adjustably fixedly connected on the eccentric rotating disc (5) based on a locking adjusting assembly (9), the locking adjusting assembly (9) comprises an arc-shaped adjusting groove (91) formed on the eccentric rotating disc (5) and a sliding adjusting block (92) slidingly connected in the arc-shaped adjusting groove (91), the arc center of the arc-shaped adjusting groove (91) coincides with the rotation center of the eccentric rotating disc (5), a locking screw (93) is fixedly connected on the sliding adjusting block (92), a locking nut (94) is rotationally connected on the locking screw (93), and the second cable fixing clamp (6) is fixedly connected on one end of the locking screw (93) away from the sliding adjusting block (92).

7. A cable cold-bending test machine for a variable frequency system according to claim 1, wherein The rebound assembly (4) uses a rebound torsional spring.

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