CN111624089A - Bending resistance testing device and method based on clean transmission cable - Google Patents
Bending resistance testing device and method based on clean transmission cable Download PDFInfo
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- CN111624089A CN111624089A CN202010341414.6A CN202010341414A CN111624089A CN 111624089 A CN111624089 A CN 111624089A CN 202010341414 A CN202010341414 A CN 202010341414A CN 111624089 A CN111624089 A CN 111624089A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a bending resistance testing device and method based on a clean transmission cable, belongs to the technical field of cable quality detection, and relates to a bending resistance testing device based on a clean transmission cable. Can realize simulating the clean transmission cable among the in-service use condition, test clean transmission cable's bending resistance ability, improve the degree of accuracy of test, and test dynamics, bend radius all can adjust, can be applicable to the clean transmission cable of different specifications, and the suitability is strong and easy operation, convenience.
Description
Technical Field
The invention relates to the field of cable quality detection, in particular to a bending resistance testing device and method based on a clean transmission cable.
Background
A cable is a wire used to transmit power or information from one location to another, usually a rope-like cable made up of several or several groups of wires (at least two in each group), each group of wires being insulated from each other and usually twisted around a center, the whole being covered with a highly insulating coating, the cable having internal current-carrying, external insulation characteristics, clean transmission cables being one of the cables.
In the prior art, a bending test machine is generally used for testing the bending resistance of a cable, a plurality of pulleys are arranged on the bending test machine, and the cable is wound into an S shape through the pulleys to test the bending resistance in the test process, but the test method is not comprehensive enough, because the clean transmission cable is easily pulled and wound into an O shape in the use process and is different from the S shape in the test process, the bending degree of the clean transmission cable wound into the O shape is larger than that wound into the S shape, the bending resistance required in the actual use process is larger than that in the test process, and the test result is not accurate enough. Therefore, a bending resistance testing device and method based on the clean transmission cable are provided.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a bending resistance testing device and method based on a clean transmission cable, which can simulate the clean transmission cable in actual use, test the bending resistance of the clean transmission cable, improve the testing accuracy, adjust the testing strength and the bending radius, can be suitable for the clean transmission cables with different specifications, and have strong applicability, simple operation and convenience.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A bending resistance testing device for a clean transmission cable comprises a device base and a device box, the top of the device base is provided with a bobbin which comprises a cylindrical barrel body and a connecting column, the connecting column is fixedly connected with the bottom of the barrel, both sides of the bobbin are provided with lead blocks fixedly arranged on the top of the base of the device, a transverse slide rail is fixedly arranged on one side of the wire guide block away from the bobbin, the top of the transverse slide rail is connected with a wire clamping base which is arranged in a U shape in a sliding way, two guide rods are slidably connected in the outer wall of one side of the wire clamping base, one end of each guide rod penetrates through the outer wall of the wire clamping base and is fixedly connected with a movable clamping plate, a fixed block fixedly arranged on the outer wall of the wire clamping base is arranged between the two guide rods, the middle part threaded connection of fixed block has the screw rod, the screw rod runs through the fixed block and extends to and is connected with the rotation of movable clamp plate.
The device comprises a device box, a driving motor, a turntable, a connecting rod, a loop bar, vertical slide rails, a sliding block, a linkage plate, a support plate, a rotating shaft, two linkage rods, an extrusion rod, a reset spring, a return spring, a pressing rod and a spring, wherein the driving motor is fixedly arranged in the device box, the turntable is fixedly connected to the output end of the driving motor, one side of the turntable is fixedly connected with the connecting rod, the loop bar is arranged on the outer wall of the connecting rod, the vertical slide rails are fixedly arranged on the inner walls of the two sides of the device box, the sliding block is connected to the vertical slide rails in a sliding manner, the linkage plate is fixedly connected between the sliding blocks, the support plate is fixedly connected to one side of the linkage plate away from the driving motor, the top of the support plate is fixedly provided with the rotating shaft, the outer wall of the, two sliding grooves matched with the linkage rods are formed in the outer wall of the device box, and the linkage rods penetrate through the corresponding sliding grooves and are hinged to the wire clamping base.
Furthermore, one side of the device base is fixedly provided with two fixing rods which are arranged in an L shape, one ends of the fixing rods, far away from the device base, are fixedly connected with the outer walls of the two sides of the device box respectively, and the device box is fixedly connected with the device base through the fixing rods.
Further, seted up on the top outer wall of device base with spliced pole assorted spread groove, spliced pole and spread groove threaded connection, the bobbin is equipped with multiple specification according to the radial difference of barrel, and radius when the radius of barrel is deciding the cable test bending radius, and different bobbins are changed to the accessible to be suitable for the test of different thickness cables, and the bobbin passes through the spliced pole and the spread groove is installed on the device base, rotates the barrel and makes spliced pole and spread groove separation, can change the bobbin, easy operation, change convenience.
Further, the screw rod passes through the bearing and is connected with movable clamp plate rotation, the clamp wire base is kept away from on the inner wall of movable clamp plate one side, all is provided with the slipmat on the outer wall of movable clamp plate one side of keeping away from the screw rod, the slipmat is the rubber material, through the setting of clamp wire base, guide bar, movable clamp plate, fixed block, screw rod, passes the clamp wire base with the cable, rotates the screw rod and can drive movable clamp plate and be close to the cable, and then presss from both sides the cable tightly on the clamp wire base, and the setting of slipmat can increase the frictional force between cable and clamp wire base, prevents the cable slippage.
Furthermore, the middle part of the wire block is provided with a wire hole, and the arrangement of the wire block and the wire hole can provide a guiding effect for the cable.
Furthermore, the distance between one end of the loop bar, which is far away from the connecting rod, and the center of the rotary disc is larger than the distance between the linkage plate and the center of the rotary disc, the driving motor is started through the arrangement of the driving motor, the turntable, the connecting rod, the loop bar, the adjusting groove, the vertical slide rail, the slide block, the linkage plate, the supporting plate, the rotating shaft, the linkage rod, the extrusion seat, the reset spring and the sliding groove, can drive the connecting rod to rotate, so that the loop bar intermittently extrudes the linkage plate, when the linkage plate is extruded to move away from the driving motor, the extrusion rod is driven to extrude the return spring, the two wire clamping bases are driven to move reversely by the two linkage rods, when the sleeve rod is separated from the linkage plate, the reset spring rebounds to enable the linkage plate box to move in the direction close to the driving motor to drive the two wire clamping bases to move oppositely, so that the cable fixed on the wire clamping bases is pulled intermittently to test the cable.
Further, the inside of loop bar seted up with connecting rod assorted adjustment tank, the connecting rod passes through adjustment tank and loop bar threaded connection, the one end that the connecting rod was kept away from to the loop bar sets up to circular-arcly, through the setting of loop bar, connecting rod, adjustment tank, just, the loop bar is rotated in the reversal, can the loop bar slide along the connecting rod left and right, adjust the distance between loop bar and carousel, the distance between loop bar and carousel is big more, two double-layered line base reverse slip's distance is just more far away, the dynamics of dragging to the cable is just big more, the distance between the same reason loop bar and carousel is little, it is just littleer to drag the dynamics, thereby the dynamics of dragging when the test is adjusted to the accessible rotates the loop bar, with the test that is applicable to different specifications, the cable of different performance requirements, the suitability has been improved.
Furthermore, one side fixed mounting of erecting the slide rail has limit stop, limit stop is located the one side that the backup pad was kept away from to the slider, and limit stop's setting can prevent when reset spring kick-backs, and linkage board striking driving motor leads to driving motor impaired.
Furthermore, the adjusting hole has been seted up on the bottom outer wall of device case, the adjusting hole is located the carousel directly over, the setting of adjusting hole, and staff's accessible adjusting hole deepens the hand into the device incasement, and then rotates the loop bar and adjust, has improved the convenience.
A bending resistance testing method based on a clean transmission cable comprises the following steps:
s1, crossing the two ends of the cable to be tested around the cylinder, and enabling the two ends of the cable to be tested to respectively penetrate through the wire holes in the wire blocks on the two sides;
s2, continuously enabling the two ends of the cable to be tested to penetrate through the wire clamping bases on the two sides, and rotating the screw rod to enable the movable clamping plate to clamp the cable to be tested on the wire clamping bases;
s3, starting a driving motor to enable the two wire clamping bases to intermittently and reversely move, so that the cable to be tested is pulled and wound into an O shape along the cylinder, and the bending resistance of the cable to be tested is simulated under the actual use condition;
and S4, after 1-3 minutes, closing the driving motor, taking down the cable to be tested, observing the damage degree of the cable, testing the cable through a cable fault tester, and judging whether the cable can be normally used.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) through the arrangement of the driving motor, the rotary disc, the connecting rod, the loop bar, the adjusting groove, the vertical slide rail, the slide block, the linkage plate, the supporting plate, the rotating shaft, the linkage rod, the extrusion seat, the reset spring and the slide groove, after the cable is placed according to the requirements of the detection method in the scheme, the driving motor is started, can drive the connecting rod to rotate, so that the loop bar intermittently extrudes the linkage plate, when the linkage plate is extruded to move away from the driving motor, the extrusion rod is driven to extrude the return spring, the two wire clamping bases are driven to move reversely by the two linkage rods, when the sleeve rod is separated from the linkage plate, the return spring rebounds to enable the linkage plate box to move close to the driving motor to drive the two wire clamping bases to move oppositely, therefore, the cable fixed on the wire clamping base is intermittently pulled, the cable in the actual use condition is simulated for testing, and the accuracy is improved.
(2) Through the loop bar, the connecting rod, the setting of adjustment tank, just, the loop bar is rotated in the reversal, can make the loop bar slide along the connecting rod left and right respectively, adjust the distance between loop bar and carousel, the distance between loop bar and carousel is big more, two double-layered line base reverse slip's distance is just more far away, the dynamics of dragging to the cable is just big more, distance between peer loop bar and carousel is little less, the dynamics of dragging is just little, thereby the dynamics of dragging when the accessible rotates the loop bar regulation test, with the test that is applicable to different specifications, the cable of different performance requirements, and the applicability is improved.
(3) Offer on the top outer wall of device base with spliced pole assorted spread groove, spliced pole and spread groove threaded connection, the bobbin is equipped with multiple specification according to the radial difference of barrel, the radius of barrel is deciding the bend radius when the cable test, different bobbins are changed to the accessible, with the test of being suitable for different thickness cables, and the bobbin passes through the spliced pole and the spread groove is installed on the device base, it makes spliced pole and spread groove separation to rotate the barrel, can change the bobbin, moreover, the steam generator is simple in operation, and the change is convenient.
(4) Through the setting of press from both sides line base, guide bar, movable clamp plate, fixed block, screw rod, pass the press from both sides line base with the cable, rotate the screw rod and can drive movable clamp plate and be close to the cable, and then press from both sides the cable tightly on pressing from both sides line base, and the setting of slipmat can increase the frictional force between cable and the press from both sides line base, prevents the cable slippage.
(5) The middle part of the wire block is provided with a wire hole, and the arrangement of the wire block and the wire hole can provide a guiding effect for the cable.
(6) The setting of limit stop can prevent that when reset spring kick-backs, linkage board striking driving motor, lead to driving motor impaired.
(7) The setting of regulation hole, staff's accessible regulation hole is gone deep into the device incasement with the hand, and then rotates the loop bar and adjust, has improved the convenience.
Drawings
FIG. 1 is a top view of a bending resistance test apparatus for a clean transmission cable according to the present invention;
FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 3 is a front view of the present invention at the bobbin;
FIG. 4 is a side view of the wire clamping base of the present invention;
fig. 5 is a side view of a lead block of the present invention;
FIG. 6 is a top view of the inside of the apparatus case of the present invention;
FIG. 7 is a cross-sectional view of the inside of a loop bar of the present invention;
FIG. 8 is a cross-sectional view of the inside of the extrusion seat of the present invention;
fig. 9 is a diagram of the working state of the bending resistance testing device for the transmission cable based on cleaning of the invention.
The reference numbers in the figures illustrate:
1. a device base; 2. a device case; 3. fixing the rod; 4. a bobbin; 401. a barrel; 402. connecting columns; 5. a lead block; 6. a transverse slide rail; 7. a wire clamping base; 8. a guide bar; 9. a movable splint; 10. a fixed block; 11. a screw; 12. a non-slip mat; 13. a wire guide hole; 14. a drive motor; 15. a turntable; 16. a connecting rod; 17. a loop bar; 18. an adjustment groove; 19. a vertical slide rail; 20. a slider; 21. a linkage plate; 22. a support plate; 23. a rotating shaft; 24. a linkage rod; 25. an extrusion stem; 26. a pressing base; 27. a return spring; 28. a chute; 29. a limit stop block; 30. an adjustment hole; 31. and connecting the grooves.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-5, a testing device for testing bending resistance based on a clean transmission cable comprises a device base 1 and a device box 2, wherein two fixing rods 3 which are arranged in an L shape are fixedly installed on one side of the device base 1, one ends of the two fixing rods 3 far away from the device base 1 are respectively fixedly connected with the outer walls of two sides of the device box 2, the device box 2 is fixedly connected with the device base 1 through the fixing rods 3, a bobbin 4 is arranged on the top of the device base 1, the bobbin 4 comprises a cylindrical barrel 401 and a connecting column 402, the connecting column 402 is fixedly connected with the bottom of the barrel 401, a connecting groove 31 matched with the connecting column 402 is arranged on the outer wall of the top of the device base 1, the connecting column 402 is in threaded connection with the connecting groove 31, the bobbin 4 is provided with various specifications according to the radius of the barrel 401, the radius of the barrel, the testing device can be suitable for testing cables with different thicknesses by replacing different bobbins 4, the bobbins 4 are installed on the device base 1 through the connecting columns 402 and the connecting grooves 31, the barrel body 401 is rotated to separate the connecting columns 402 from the connecting grooves 31, the bobbins 4 can be replaced, the operation is simple, the replacement is convenient, the two sides of each bobbin 4 are respectively provided with the lead blocks 5 fixedly installed at the top of the device base 1, the middle parts of the lead blocks 5 are provided with the lead holes 13, the lead blocks 5 and the lead holes 13 can provide a guiding effect for the cables, one side of each lead block 5, far away from the bobbin 4, is fixedly provided with the transverse sliding rail 6, the top of the transverse sliding rail 6 is slidably connected with the wire clamping base 7 which is in a U shape, two guide rods 8 are slidably connected with the outer wall of one side of the wire clamping base 7, one end of each guide rod 8 penetrates through the outer wall of the wire clamping base 7, be equipped with fixed mounting between two guide bars 8 and have fixed block 10 on pressing from both sides line base 7 outer wall, the middle part threaded connection of fixed block 10 has screw rod 11, screw rod 11 runs through fixed block 10 and extends to and is connected with activity splint 9 rotation, screw rod 11 passes through the bearing and is connected with activity splint 9 rotation, press from both sides line base 7 and keep away from on the inner wall of activity splint 9 one side, all be provided with slipmat 12 on the outer wall of screw rod 11 one side is kept away from to activity splint 9, slipmat 12 is the rubber material, through pressing from both sides line base 7, guide bar 8, activity splint 9, fixed block 10, the setting of screw rod 11, pass line base 7 with the cable, it can drive activity splint 9 and be close to the cable to rotate screw rod 11, and then press from both sides the cable tightly on pressing from both sides line base 7, and the setting of slipmat 12, can increase the frictional force.
Referring to fig. 1 and 6-9, a driving motor 14 is fixedly installed inside a device box 2, a turntable 15 is fixedly connected to an output end of the driving motor 14, a connecting rod 16 is fixedly connected to one side of the turntable 15, a loop bar 17 is arranged on an outer wall of the connecting rod 16, vertical slide rails 19 are fixedly installed on inner walls of two sides of the device box 2, sliders 20 are slidably connected to the vertical slide rails 19, linkage plates 21 are fixedly connected between the sliders 20, a supporting plate 22 is fixedly connected to one side of the linkage plate 21 away from the driving motor 14, a rotating shaft 23 is fixedly installed at the top of the supporting plate 22, two linkage rods 24 which are arranged in a crossed manner are rotatably connected to outer walls of the rotating shaft 23, an extrusion rod 25 is fixedly connected to one side of the supporting plate 22, an extrusion seat 26 which is matched with the extrusion rod 25 is fixedly installed on the inner wall of the device box 2, a return spring 27 is arranged on the inner wall of the extrusion seat, two sliding grooves 28 matched with a linkage rod 24 are formed in the outer wall of the device box 2, the linkage rod 24 penetrates through the corresponding sliding groove 28 and is hinged with the wire clamping base 7, the distance between one end, far away from the connecting rod 16, of the sleeve rod 17 and the center of the rotary table 15 is larger than the distance between the linkage plate 21 and the center of the rotary table 15, the sleeve rod 17, the adjusting groove 18, the vertical sliding rail 19, the sliding block 20, the linkage plate 21, the supporting plate 22, the rotating shaft 23, the linkage rod 24, the extrusion rod 25, the extrusion seat 26, the reset spring 27 and the sliding grooves 28 are arranged, the driving motor 14 is started, the connecting rod 16 can be driven to rotate, the sleeve rod 17 intermittently extrudes the linkage plate 21, when the linkage plate 21 is extruded to move towards the direction far away from the driving motor 14, the extrusion rod 25 is driven to extrude the reset spring 27, the two wire clamping bases 7 are driven to move reversely through the two linkage rods 24, and when the sleeve rod 17 is separated, the reset spring 27 rebounds to enable the linkage plate 21 to move in the direction close to the driving motor 14 to drive the two wire clamping bases 7 to move in the opposite direction, so that a cable fixed on the wire clamping bases 7 is intermittently pulled, the cable is tested, the adjusting groove 18 matched with the connecting rod 16 is formed in the loop bar 17, the connecting rod 16 is in threaded connection with the loop bar 17 through the adjusting groove 18, one end, far away from the connecting rod 16, of the loop bar 17 is arc-shaped, the loop bar 17, far away from the connecting rod 16, is positively and negatively moved through the arrangement of the loop bar 17, the loop bar 17 can respectively slide along the left and right of the connecting rod 16 to adjust the distance between the loop bar 17 and the turntable 15, the larger the distance between the loop bar 17 and the turntable 15 is, the farther the reverse sliding distance between the two wire clamping bases 7 is, the larger the pulling force on the cable is, the smaller the distance between the loop bar 17 and the turntable 15 is the same, the smaller the, thereby the pull dynamics when the accessible rotates loop bar 17 regulation test, so as to be applicable to different specifications, the test of the cable of different performance requirements, the suitability has been improved, one side fixed mounting who erects slide rail 19 has limit stop 29, limit stop 29 is located the one side that backup pad 22 was kept away from to slider 20, limit stop 29's setting, when can preventing reset spring 27 to kick-back, linkage plate 21 striking driving motor 14, it is impaired to lead to driving motor 14, regulation hole 30 has been seted up on the bottom outer wall of device case 2, regulation hole 30 is located carousel 15 directly over, the setting of regulation hole 30, staff's accessible regulation hole 30 is with the hand deep device case 2 in, and then rotate loop bar 17 and adjust, the convenience is improved.
Referring to fig. 1-9, a method for testing bending resistance based on clean transmission cable comprises the following steps:
s1, crossing the two ends of the cable to be tested around the cylinder 401, and enabling the two ends of the cable to be tested to respectively penetrate through the wire holes 13 in the wire blocks 5 on the two sides;
s2, continuously enabling the two ends of the cable to be tested to penetrate through the wire clamping bases 7 on the two sides, and rotating the screw rod 11 to enable the movable clamping plate 9 to clamp the cable to be tested on the wire clamping bases 7;
s3, starting the driving motor 14, and enabling the two wire clamping bases 7 to intermittently and reversely move, so that the cable to be tested is pulled and wound into an O shape along the cylinder 401, and the bending resistance of the cable to be tested is simulated under the actual use condition;
and S4, after 1-3 minutes, closing the driving motor 14, taking down the cable to be tested, observing the damage degree of the cable, testing the cable through the cable fault tester, and judging whether the cable can be normally used.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides a based on clean transmission cable is with resistant flexible capability test device, includes device base (1) and device case (2), its characterized in that: the bobbin (4) is arranged at the top of the device base (1), the bobbin (4) comprises a cylindrical barrel body (401) and a connecting column (402), the connecting column (402) is fixedly connected to the bottom of the barrel body (401), wire blocks (5) fixedly installed at the top of the device base (1) are arranged on two sides of the bobbin (4), a cross slide rail (6) is fixedly installed on one side, away from the bobbin (4), of each wire block (5), the top of the cross slide rail (6) is slidably connected with a U-shaped wire clamping base (7), two guide rods (8) are slidably connected to the outer wall of one side of the wire clamping base (7), one ends of the guide rods (8) penetrate through the outer wall of the wire clamping base (7) and are fixedly connected with movable clamping plates (9), and fixed blocks (10) fixedly installed on the outer wall of the wire clamping base (7) are arranged between the guide rods (8), the middle part of the fixed block (10) is in threaded connection with a screw rod (11), and the screw rod (11) penetrates through the fixed block (10) and extends to be rotationally connected with the movable clamping plate (9);
the device comprises a device box (2), a driving motor (14) is fixedly mounted inside the device box (2), a turntable (15) is fixedly connected to the output end of the driving motor (14), a connecting rod (16) is fixedly connected to one side of the turntable (15), a loop bar (17) is arranged on the outer wall of the connecting rod (16), vertical sliding rails (19) are fixedly mounted on the inner walls of the two sides of the device box (2), sliding blocks (20) are connected to the vertical sliding rails (19) in a sliding mode, linkage plates (21) are fixedly connected between the sliding blocks (20), a supporting plate (22) is fixedly connected to one side, away from the driving motor (14), of each linkage plate (21), a rotating shaft (23) is fixedly mounted at the top of the supporting plate (22), two linkage rods (24) which are arranged in a crossed mode are rotatably connected to the outer wall of the rotating shaft (23), and an extrusion rod (, fixed mounting has on the inner wall of device case (2) with extrusion ram (25) assorted extrusion seat (26), be equipped with reset spring (27) on the inner wall of extrusion seat (26), extrusion ram (25) run through the outer wall of extrusion seat (26) and are connected with reset spring (27), set up two and gangbar (24) assorted spout (28) on the outer wall of device case (2), gangbar (24) run through and correspond spout (28) and articulate with double-layered line base (7).
2. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: one side of the device base (1) is fixedly provided with two fixing rods (3) which are arranged in an L shape, and one ends of the fixing rods (3) far away from the device base (1) are fixedly connected with the outer walls of two sides of the device box (2) respectively.
3. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: the device is characterized in that a connecting groove (31) matched with a connecting column (402) is formed in the outer wall of the top of the device base (1), the connecting column (402) is in threaded connection with the connecting groove (31), and the bobbin (4) is provided with various specifications according to different radiuses of the bobbin body (401).
4. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: the screw rod (11) is rotatably connected with the movable clamping plate (9) through a bearing, the wire clamping base (7) is arranged on the inner wall of one side, away from the movable clamping plate (9), of the inner wall of one side, the movable clamping plate (9) is arranged on the outer wall of one side, away from the screw rod (11), of the outer wall, and the non-slip mat (12) is made of rubber.
5. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: the middle part of the lead block (5) is provided with a lead hole (13).
6. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: the distance between one end of the loop bar (17) far away from the connecting bar (16) and the circle center of the turntable (15) is larger than the distance between the linkage plate (21) and the circle center of the turntable (15).
7. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: adjusting groove (18) with connecting rod (16) assorted is seted up to the inside of loop bar (17), connecting rod (16) pass through adjusting groove (18) and loop bar (17) threaded connection, the one end that connecting rod (16) were kept away from in loop bar (17) sets up to circular-arc.
8. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: and a limit stop (29) is fixedly mounted on one side of the vertical slide rail (19), and the limit stop (29) is positioned on one side, far away from the support plate (22), of the slide block (20).
9. The device for testing the bending resistance of the transmission cable based on the cleanness as claimed in claim 1, wherein: the device is characterized in that an adjusting hole (30) is formed in the outer wall of the bottom of the device box (2), and the adjusting hole (30) is located right above the turntable (15).
10. The method for testing the bending resistance of the transmission cable based on the cleanness as claimed in any one of claims 1 to 9, wherein the method comprises the following steps: the method comprises the following steps:
s1, crossing the two ends of the cable to be tested around the cylinder (401), and enabling the two ends of the cable to be tested to respectively penetrate through the wire holes (13) in the wire blocks (5) on the two sides;
s2, continuously enabling the two ends of the cable to be tested to penetrate through the wire clamping bases (7) on the two sides, and rotating the screw rod (11) to enable the movable clamping plate (9) to clamp the cable to be tested on the wire clamping bases (7);
s3, starting a driving motor (14), and enabling the two wire clamping bases (7) to intermittently and reversely move, so that the cable to be tested is pulled, the cable to be tested is wound into an O shape along the cylinder (401), and the bending resistance performance of the cable to be tested is simulated under the actual use condition;
and S4, after 1-3 minutes, closing the driving motor (14), taking down the cable to be tested, observing the damage degree of the cable, testing the cable through a cable fault tester, and judging whether the cable can be normally used.
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| CN202010341414.6A CN111624089A (en) | 2020-04-27 | 2020-04-27 | Bending resistance testing device and method based on clean transmission cable |
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