Cable bending resistance testing device for ships and warships

Abstract

The invention relates to the technical field of cable bending inspection, in particular to a ship cable bending resistance inspection device, which comprises three support plates, the three support plates are linearly arranged at equal intervals, and each support plate is provided with a detection assembly; the power assembly is connected with the two supporting plates located at the ends; the detection assembly comprises a rotating shaft which is rotatably arranged on the side wall of the support plate and penetrates through the support plate; the fixing unit is arranged at one end part of the rotating shaft, and the fixing unit is used for fixing a cable; according to the cable bending inspection device, through cooperation of the adjusting unit, the limiting unit, the first rack, the second rack, the gear and the fixing unit, bending inspection of different degrees can be carried out on three kinds of cables on the three supporting plates at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of cable bending inspection, in particular to a bending resistance inspection device for ship cables. Background Art

[0002] The internal space structure of a ship is complex, with various cabins, pipelines, equipment, etc. Cables need to be laid in a limited and irregular space, often bypassing many obstacles and going through multiple bends to reach the corresponding connection parts. Therefore, in order to ensure that the ship's cable laying work can be carried out normally, it is necessary to perform a bending test on the cable to ensure that the cable can be bent according to actual installation requirements.

[0003] In the prior art, most cable bending test equipment uses a swing arm to drive the cable to bend, and performs bending test work at a specific swing angle and swing speed. Since different positions have different requirements for the bending degree of the cable, during the test process, it is also necessary to adjust the swing angle and swing speed according to the type of cable. As a result, in the prior art, most cable bending test devices can only perform bending test work on a single type of cable. Summary of the invention

[0004] The object of the present invention is to provide a bending resistance testing device for ship cables to solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the present invention is: a bending resistance test device for ship cables, comprising:

[0006] Three support plates, the three support plates are arranged linearly with equal distances, and each support plate is provided with a detection component;

[0007] A power assembly, wherein the power assembly is connected to two support plates at the ends;

[0008] The detection component comprises:

[0009] A rotating shaft, the rotating shaft is rotatably arranged on the side wall of the support plate, and the rotating shaft passes through the support plate;

[0010] A fixing unit, the fixing unit being arranged at one end of the rotating shaft and being used for fixing the cable;

[0011] A gear, the gear being fixed on the other end of the rotating shaft;

[0012] A connecting unit, wherein the connecting unit is arranged on a side wall of the supporting plate;

[0013] Two connecting plates, both of which are connected to the connecting unit;

[0014] A first rack and a second rack, wherein the first rack and the second rack are both fixed between two connecting plates, and the first rack and the second rack are symmetrically arranged with respect to the gear;

[0015] A limiting unit, the limiting unit is arranged on the side wall of the support plate, and the limiting unit is used to limit the movement range of the two connecting plates;

[0016] The adjusting unit is connected to the connecting unit and is used to adjust the height of the connecting plate.

[0017] Preferably, the fixing unit comprises:

[0018] A swing arm, wherein the swing arm is fixed to the end of the rotating shaft;

[0019] A clamp, the clamp is fixed at one end of the side wall of the swing arm, and the clamp is used to fix the cable;

[0020] Two first pulleys, both of which are rotatably arranged on the side wall of the support plate;

[0021] Two second pulleys, both of which are rotatably arranged on the side wall of the support plate.

[0022] Preferably, the connecting unit comprises:

[0023] Two guide rails, both of which are fixed on the side walls of the support plate;

[0024] Two sliding seats, both of which are vertically arranged, a first sliding block is fixed to the side wall of each sliding seat, the four first sliding blocks are respectively slidably connected to the two guide rails, and the two sliding seats are respectively slidably connected to the two connecting plates;

[0025] The transmission unit is connected to the two first sliding blocks located below, and the transmission unit is connected to the power assembly.

[0026] Preferably, the adjustment unit comprises:

[0027] A second sliding block, wherein the second sliding block is slidably connected to the guide rail located above;

[0028] The cylinder is fixed on the top of the second slider, and the telescopic end of the cylinder passes through the bottom of the second slider, and the telescopic end of the cylinder is fixed to the first rack.

[0029] Preferably, the limiting unit comprises:

[0030] Two support plates, both of which are fixed on the side walls of the support plate, both of which are provided with fixing holes, and both of which are provided with electric push rods.

[0031] Preferably, the power assembly comprises:

[0032] Two pulleys, the two pulleys are rotatably connected to the two side walls of the support plate at the ends respectively;

[0033] A transmission belt is sleeved on two pulleys.

[0034] Preferably, the transmission unit comprises:

[0035] Two connecting blocks, the two connecting blocks are fixed on the top of the transmission belt;

[0036] A rod body, wherein the rod body is fixed between two connecting blocks;

[0037] A fixing plate, wherein the fixing plate is fixed to two first sliding blocks located below;

[0038] A transmission plate, wherein the transmission plate is fixed to the bottom of the fixed plate, a round hole is opened on the side wall of the transmission plate, and the rod body passes through the round hole;

[0039] Two springs are respectively fixed on the side walls of the two connecting blocks, and both springs are fixed to the transmission plate.

[0040] The present invention provides a ship cable bending resistance test device through improvement, which has the following improvements and advantages compared with the prior art:

[0041] The present invention can achieve, by setting the adjustment unit, the first rack, the second rack and the gear, that when the first rack and the second rack move in the same direction, when the first rack and the second rack respectively form a transmission with the gear, the rotation directions of the gears are opposite (that is, when the first rack and the gear are transmitted, the gear rotates clockwise, and when the second rack and the gear are transmitted, the gear rotates counterclockwise), thereby achieving the gear with a smaller rotation angle and a faster reciprocating rotation frequency to drive the fixed unit to perform cable bending inspection with a smaller swing angle and a faster swing frequency;

[0042] When only the limiting unit is passed, at this time, the gear is always meshed with the first rack, and the limiting unit limits the moving range of the connecting plate, that is, the moving range of the first rack is limited, so that the gear can only rotate at a specific angle, and the rotation frequency of the gear is determined by the power component. Therefore, at this time, the fixing unit can drive the cable to perform cable bending inspection at a smaller swing angle and normal swing frequency;

[0043] When the limiting unit and the adjusting unit are not working, the power assembly drives the connecting plate to reciprocate normally, and then drives the fixing unit to swing through the gear, so that the cable can be bent at a normal swing frequency and swing angle;

[0044] In summary, the device can simultaneously perform bending tests of different degrees on three types of cables on three support plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0046] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0047] Figure 2 It is a schematic diagram of the first rack, the second rack and the gear structure of the present invention;

[0048] Figure 3 The present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0049] Figure 4 The present invention Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0050] Figure 5 It is a front view structural schematic diagram of the first rack, the second rack and the gear of the present invention.

[0051] Description of reference numerals:

[0052] 1. Support plate; 2. First pulley; 3. Second pulley; 4. Swing arm; 5. Clamp; 6. Pulley; 7. Transmission belt; 8. Support plate; 9. Electric push rod; 10. Guide rail; 11. First slider; 12. Second slider; 13. Cylinder; 14. Connecting plate; 15. First rack; 16. Gear; 17. Rotating shaft; 18. Second rack; 19. Connecting block; 20. Rod body; 21. Spring; 22. Fixed plate; 23. Transmission plate; 24. Sliding seat. DETAILED DESCRIPTION

[0053] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] The present invention provides a ship cable bending resistance test device through improvement. The technical solution of the present invention is:

[0055] like Figure 1-Figure 5 As shown, a bending resistance test device for ship cables comprises:

[0056] Three support plates 1, the three support plates 1 are arranged linearly with equal distances, and each support plate 1 is provided with a detection component;

[0057] A power assembly, the power assembly is connected to two support plates 1 at the ends;

[0058] The detection components include:

[0059] A rotating shaft 17, the rotating shaft 17 is rotatably disposed on the side wall of the support plate 1, and the rotating shaft 17 passes through the support plate 1;

[0060] A fixing unit, the fixing unit is arranged at one end of the rotating shaft 17, and the fixing unit is used to fix the cable;

[0061] Gear 16, gear 16 is fixed to the other end of the rotating shaft 17;

[0062] A connecting unit, which is arranged on the side wall of the support plate 1;

[0063] Two connecting plates 14, both connecting plates 14 are connected to the connecting unit;

[0064] A first rack 15 and a second rack 18, wherein the first rack 15 and the second rack 18 are both fixed between two connecting plates 14, and the first rack 15 and the second rack 18 are symmetrically arranged with respect to the gear 16;

[0065] A limiting unit, which is arranged on the side wall of the support plate 1 and is used to limit the movement range of the two connecting plates 14;

[0066] The adjusting unit is connected to the connecting unit, and the adjusting unit is used to adjust the height of the connecting plate 14 .

[0067] By working the limiting unit, the moving range of the first rack 15 is limited, and then the rotation angle of the gear 16 is limited, so as to cooperate with the fixing unit to realize the bending test of the cable at a normal swing frequency and a small swing angle;

[0068] By adjusting the height of the connecting plate 14, the first rack 15 and the second rack 18 are meshed with the gear 16, respectively, so as to realize a small angle rotation of the gear 16 and increase the frequency of its reciprocating rotation, so as to realize the bending test of the cable with a higher swing frequency and a smaller swing angle;

[0069] When both the limiting unit and the regulating unit are not working, the swing period and the swing angle of the cable are determined by the power component, that is, in this state, the cable is subjected to bending test at the default swing angle and swing frequency.

[0070] Furthermore, the fixing unit comprises:

[0071] A swing arm 4, which is fixed to the end of the rotating shaft 17;

[0072] A clamp 5, which is fixed at one end of the side wall of the swing arm 4 and is used to fix the cable;

[0073] Two first pulleys 2, both of which are rotatably arranged on the side wall of the support plate 1;

[0074] Two second pulleys 3 are rotatably arranged on the side wall of the support plate 1 .

[0075] The cable is fixed on the swing arm 4 by a clamp. During the bending test, the cable position is restricted by the first pulley 2 so that the cable is bent at the first pulley 2 to achieve the purpose of the bending test.

[0076] The two second pulleys 3 can limit the position of the lower end of the cable, thereby preventing the tension exerted on the cable by the weight at the bottom end of the cable from shifting over a large range during the bending test.

[0077] Further, the connection unit includes:

[0078] Two guide rails 10, both of which are fixed on the side walls of the support plate 1;

[0079] Two sliding seats 24, both of which are vertically arranged, a first sliding block 11 is fixed to the side wall of each sliding seat 24, the four first sliding blocks 11 are respectively slidably connected to the two guide rails 10, and the two sliding seats 24 are respectively slidably connected to the two connecting plates 14;

[0080] The transmission unit is connected to the two first sliding blocks 11 located below, and the transmission unit is connected to the power assembly.

[0081] The first rack 15 and the second rack 18 can move up and down by sliding between the sliding seat 24 and the connecting plate 14;

[0082] Through the sliding of the guide rail 10 and the first sliding block 11 , the first rack 15 and the second rack 18 between the two connecting plates 14 can move back and forth, thereby realizing the reciprocating rotation of the gear 16 .

[0083] Furthermore, the adjustment unit comprises:

[0084] A second sliding block 12, the second sliding block 12 is slidably connected to the guide rail 10 located above;

[0085] The cylinder 13 is fixed on the top of the second slider 12 , and the telescopic end of the cylinder 13 passes through the bottom of the second slider 12 , and the telescopic end of the cylinder 13 is fixed to the first rack 15 .

[0086] Through the operation of the cylinder 13 , the first rack 15 can be raised, and then the second rack 18 can be driven to rise through the connecting plate 14 , so as to achieve the separation of the first rack 15 and the gear 16 , and the meshing of the second rack 18 and the gear 16 .

[0087] Furthermore, the restriction unit includes:

[0088] Two support plates 8 are fixed on the side wall of the support plate 1. The side walls of the two support plates 8 are provided with fixing holes, and electric push rods 9 are arranged in the two fixing holes.

[0089] By adjusting the extension amount of the electric push rod 9, that is, when the connecting plate 14 moves to abut against the extension end of the electric push rod 9, the connecting plate 14 no longer moves.

[0090] Furthermore, the power assembly includes:

[0091] Two pulleys 6, the two pulleys 6 are rotatably connected to the side walls of the two support plates 1 at the ends respectively;

[0092] A transmission belt 7 is sleeved on two pulleys 6.

[0093] Furthermore, the transmission unit comprises:

[0094] Two connecting blocks 19, the two connecting blocks 19 are fixed on the top of the transmission belt 7;

[0095] A rod body 20, the rod body 20 is fixed between two connecting blocks 19;

[0096] A fixing plate 22, the fixing plate 22 and the two first sliding blocks 11 located below are fixed;

[0097] A transmission plate 23, the transmission plate 23 is fixed to the bottom of the fixed plate 22, a circular hole is opened on the side wall of the transmission plate 23, and the rod body 20 passes through the circular hole;

[0098] Two springs 21 are respectively fixed on the side walls of the two connecting blocks 19 , and both springs 21 are fixed to the transmission plate 23 .

[0099] When the transmission belt 7 is working, it drives the connecting block 19 to move. At this time, the two springs 21 drive the transmission plate 23 to move, and cooperate with the fixed plate 22 and the two first sliders 11 below to realize the movement of the two connecting plates 14, that is, drive the first rack 15 and the second rack 18 to move;

[0100] When the connecting plate 14 cannot move under the action of the electric push rod 9, the normal operation of the transmission belt 7 drives the connecting block 19 to move normally, and the sliding between the rod body 20 and the transmission plate 23 enables the transmission belt 7 to work normally, thereby achieving that when the connecting plate 14 does not move, the transmission belt 7 can maintain normal operation, thereby enabling the bending test on the other two support plates 1 to be carried out normally;

[0101] In the above process, one of the springs 21 is compressed and the other spring 21 is stretched. When the transmission belt 7 moves in the opposite direction, both springs 21 are reset.

[0102] Specifically, the working principle is as follows: when in use, the cable to be tested is fixed to the end of the swing arm 4 by using the clamp 5, and then the cable is passed between the two first pulleys 2 and the two second pulleys 3, and a suitable weight is fixed at the bottom end of the cable;

[0103] A control system and an adapted motor are used to drive one of the pulleys 6 to perform periodic forward and reverse rotation. Through the periodic forward and reverse rotation of one of the pulleys 6, the other pulley 6 tensions the transmission belt 7, so that the upper surface of the transmission belt 7 can perform periodic reciprocating motion;

[0104] When the transmission belt 7 moves, the two connecting blocks 19 and the two springs 21 push the transmission plate 23 to move back and forth, and then the fixed plate 22 drives the two first sliders 11 below, so that the two connecting plates 14 move left and right periodically;

[0105] When the cable is subjected to bending test at a normal angle and frequency, the cylinder 13 is used to keep the first rack 15 and the gear 16 in contact at all times, and then during the left and right movement of the two connecting plates 14, the first rack 15 drives the gear 16 to rotate periodically, and then the swing arm 4 is driven to swing through the rotating shaft 17 to perform the bending test of the cable;

[0106] When the swing arm 4 is required to perform a small-angle periodic swing, the extension amount of the electric push rod 9 is adjusted, that is, when the connecting plate 14 moves to contact the extension end of the electric push rod 9, the connecting plate 14 no longer moves. At this time, the spring 21 is compressed, so that when the connecting plate 14 does not move, the transmission belt 7 can maintain normal operation, so that the bending test on the other two support plates 1 can be carried out normally;

[0107] When the swing arm 4 needs to swing at a small angle and a high frequency, after the first rack 15 drives the gear 16 to rotate a certain angle, the first rack 15 is driven to rise by the cylinder 13. During the rising process of the first rack 15, the second rack 18 is driven to rise by the connecting plate 14, so that the second rack 18 and the gear 16 are meshed. Since the transmission belt 7 has not been turned back at this time, when the second rack 18 and the gear 16 are meshed, the gear 16 is immediately driven to rotate in the opposite direction, and then the swing arm 4 is realized through the rotating shaft 17. Then the transmission belt 7 is turned back. At this time, the second rack 18 drives the gear 16 to rotate, and the swing direction of the swing arm 4 is adjusted. Finally, the first rack 15 and the gear 16 are meshed again by the cylinder 13, so that the swing direction of the swing arm 4 is adjusted again, that is, when the swing arm 4 on the other support plate 1 swings at a large angle for one cycle, the swing arm 4 adjusted by the cylinder 13 swings at a small angle for two cycles;

[0108] In summary, when performing a bending test, the cable on one support plate 1 is subjected to a bending test at a normal swing frequency and swing angle under the action of the swing arm 4, the cable on another support plate 1 is subjected to a bending test at a normal swing frequency and a small swing angle under the restriction of the support plate 8, and the cable on the last support plate 1 is subjected to a bending test at a small swing angle and a high swing frequency.

Claims

1. A bending resistance test device for ship cables, characterized in that: include: Three support plates (1), the three support plates (1) are arranged linearly at equal distances, and each support plate (1) is provided with a detection component; A power assembly, the power assembly being connected to two support plates (1) at the ends; The detection component comprises: A rotating shaft (17), wherein the rotating shaft (17) is rotatably disposed on a side wall of the support plate (1), and the rotating shaft (17) passes through the support plate (1); A fixing unit, the fixing unit being arranged at one end of the rotating shaft (17) and being used for fixing the cable; a gear (16), wherein the gear (16) is fixed to the other end of the rotating shaft (17); A connecting unit, wherein the connecting unit is arranged on a side wall of the support plate (1); Two connecting plates (14), both of the connecting plates (14) being connected to the connecting unit; A first rack (15) and a second rack (18), wherein the first rack (15) and the second rack (18) are both fixed between two connecting plates (14), and the first rack (15) and the second rack (18) are symmetrically arranged with respect to the gear (16); A limiting unit, the limiting unit being arranged on a side wall of the support plate (1), the limiting unit being used to limit the movement range of the two connecting plates (14); An adjusting unit is connected to the connecting unit and is used to adjust the height of the connecting plate (14).

2. A bending resistance test device for ship cables according to claim 1, characterized in that: The fixing unit comprises: A swing arm (4), wherein the swing arm (4) is fixed to the end of the rotating shaft (17); A clamp (5), the clamp (5) being fixed at one end of the side wall of the swing arm (4), and the clamp (5) being used to fix the cable; Two first pulleys (2), both of which are rotatably arranged on the side wall of the support plate (1); Two second pulleys (3), both of which are rotatably arranged on the side wall of the support plate (1).

3. A bending resistance test device for ship cables according to claim 1, characterized in that: The connecting unit comprises: Two guide rails (10), both of which are fixed on the side walls of the support plate (1); Two sliding seats (24), the two sliding seats (24) are both vertically arranged, a first sliding block (11) is fixed to the side wall of each sliding seat (24), the four first sliding blocks (11) are respectively slidably connected to the two guide rails (10), and the two sliding seats (24) are respectively slidably connected to the two connecting plates (14); A transmission unit is connected to two first sliding blocks (11) located below, and the transmission unit is connected to a power assembly.

4. A ship cable bending resistance test device according to claim 3, characterized in that: The adjustment unit comprises: A second sliding block (12), the second sliding block (12) being slidably connected to the guide rail (10) located above; A cylinder (13) is fixed on the top of the second slider (12), and the telescopic end of the cylinder (13) passes through the bottom of the second slider (12), and the telescopic end of the cylinder (13) is fixed to the first rack (15).

5. A bending resistance test device for ship cables according to claim 1, characterized in that: The limiting unit comprises: Two support plates (8), both of which are fixed on the side walls of the support plate (1), both of which are provided with fixing holes, and both of which are provided with electric push rods (9).

6. A bending resistance test device for ship cables according to claim 3, characterized in that: The power assembly comprises: Two pulleys (6), the two pulleys (6) being rotatably connected to the side walls of the two support plates (1) at the ends respectively; A transmission belt (7), wherein the transmission belt (7) is sleeved on two pulleys (6).

7. A ship cable bending resistance test device according to claim 6, characterized in that: The transmission unit comprises: Two connecting blocks (19), the two connecting blocks (19) are fixed on the top of the transmission belt (7); A rod body (20), wherein the rod body (20) is fixed between two connecting blocks (19); A fixing plate (22), wherein the fixing plate (22) is fixed to two first sliding blocks (11) located below; A transmission plate (23), wherein the transmission plate (23) is fixed to the bottom of the fixed plate (22), a circular hole is opened on the side wall of the transmission plate (23), and the rod body (20) passes through the circular hole; Two springs (21), the two springs (21) are respectively fixed on the side walls of the two connecting blocks (19), and the two springs (21) are both fixed to the transmission plate (23).

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