CN219391604U - Toughness detection device for cable production - Google Patents

Abstract

The utility model relates to the technical field of cable production, and discloses a toughness detection device for cable production, which comprises guide rails fixedly connected to two sides of the top of a workbench, wherein a cable is arranged at the top of the workbench, and a fixed half set of protection plate is sleeved on the outer side of the middle of the cable. After the fixed half sheath plate, the movable half sheath plate and the reciprocating transmission mechanism are assembled in a matched mode, the multifunctional detection protection device can be formed, cables to be detected in the subsequent use process are symmetrically sheathed and protected integrally by the fixed half sheath plate and the movable half sheath plate, and when the cable breaks and jumps out in an unexpected condition, the first damping sheath plate and the second damping sheath plate and the first compression spring and the second compression spring in the multifunctional detection protection device respectively conduct friction energy dissipation and structural deformation buffering on impact force of a broken structure of the cable, the damage degree of broken impact of the cable is reduced, and sustainable use of the multifunctional detection protection device is ensured.

Description

Toughness detection device for cable production

Technical Field

The utility model relates to the technical field of cable production, in particular to a toughness detection device for cable production.

Background

The prior cable generally refers to a rope-like wire structure formed by twisting several or several groups of wires (at least two wires in each group), each group of wires are mutually insulated and are often twisted around a center, the whole outer surface is covered with a high-insulation covering layer, thus having the use effects of inner electrifying and outer insulating, in the production process of the cable, a plurality of functional tests are required to be carried out on the finished cable to determine specific quality, specific detection items are impact resistance, toughness, heat dissipation and the like, wherein the toughness detection is realized by various technical schemes, for example, the prior patent publication, CN201921980696.3, a toughness detection device for cable production, is provided in the specification, a working operation workbench 12 is used for adjusting the length of a hydraulic rod 5, two hydraulic rods 5 extend out simultaneously, a cable fixing block at one end of the hydraulic rod 5 reaches a proper distance, after the cable is fixedly installed, the utility model provides a wire and cable toughness detection device with pneumatic clamping structure, which is disclosed in the specification as a wire and cable toughness detection device with pneumatic clamping structure, comprising the steps of opening a movable door 15, passing a cable through a placing hole 13 and placing the cable in the lower fixing plate 314, starting a cylinder 311, driving an upper fixing plate 313 to press down and contact with the cable to be pressed tightly, enabling the upper fixing plate 313 and the lower fixing plate 314 to increase friction resistance in the process of pressing and fixing the cable by using a friction pad 4 and a friction strip 5 through the use of the friction pad 4 and the friction strip 5, the friction strip 5 can effectively prevent the cable from loosening in the stretching process, the pressure value is fed back to the display screen 9 through the pressure sensor 6, the motor 324 is controlled to be started, the motor 324 drives the threaded rod 323 to rotate, the threaded rod 323 can drive the two threaded sleeves 322 to move on the opposite sides of the threaded rod 323, the threaded sleeve 322 drives the connecting rod 325 and the fixing rod 321 to move, the connecting rod 325 drives the sliding sleeve 326 to move on the surface of the sliding rod 327, the sliding sleeve 326 drives the supporting rod 315 to move, the supporting rod 315 drives the lower fixing plate 314 to move, and meanwhile, the fixing rod 321 drives the upper fixing plate 313 to move, so that the aim of synchronously moving the upper fixing plate 313 and the lower fixing plate 314 is fulfilled, the aim of automatic compaction detection of the cable can be effectively realized through the matched use of the adjusting component 32 and the fixing component 31, the cable is slowly pulled to opposite directions at the clamping positions at the two ends under the action of the motor 324 until the pressure is stopped and reset after being in peak value, the toughness stretching data of the cable is obtained by observing the display screen 9, the broken pieces falling off by the cable can be piled up in the collecting box 7 by pressing down the placing plate 10, the detection end is "the measurement of the deformation length is not included in the cable toughness experimental data, the data is not comprehensive, and moreover, in the cable detection process, in order to prevent the cable from breaking and jumping to the detection personnel, the prior art usually adopts a closed box space to carry out hard blocking, although the effect is achieved, the closed box also has the possibility of breaking, and the potential safety hazard still exists.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a toughness detection device for cable production, which solves the problems proposed by the background technology.

The utility model provides the following technical scheme: the utility model provides a toughness detection device for cable production, includes the both sides fixedly connected with guide rail at workstation top, and the top of workstation is provided with the cable, the outside cover at cable middle part is equipped with decides half cover protection plate, and decides on the top surface at half cover protection plate bottom the structure extension installation workstation middle part, the outside of deciding half cover protection plate is provided with the half cover protection plate that moves, and moves half cover protection plate, decides to be provided with reciprocating drive mechanism between the half cover protection plate, the surface at cable both ends all overlaps and is equipped with the closure plate, and the inboard of two closure plate bottoms is spacing with the one end joint of two guide rails that corresponds respectively, and the mid-mounting of one of them closure plate has small-size laser range finder, bidirectional drive mechanism is installed at the top of workstation, and the inside both sides power structure's of bidirectional drive mechanism output corresponds with the bottom of two closure plates respectively and is connected.

The inside of deciding half cover protection plate spare is provided with decides the cover board body, and decides the inboard at cover board body both ends and all fixedly cup joints first damping cover board and all fixedly cup joints first spacing cover board, and the inboard at two first damping cover board middle parts cup joints with the cable activity, fixedly connected with compression spring between first damping cover board and the first spacing cover board, the equal fixedly connected with bracing piece in surface of cover board body both ends bottom, and the bracing piece extends to the top surface of workstation, makes self bottom structure and the top surface fixed mounting of workstation through the screw afterwards.

The inside of moving half cover protection plate piece is provided with the movable cover plate body, and the inboard at movable cover plate body both ends all joint has the second damping cover plate and all fixedly cup joints the second spacing cover plate, and the inboard at two second damping cover plate middle parts cup joints with the cable activity, fixedly connected with second compression spring between second damping cover plate and the second spacing cover plate, the overall structure of moving half cover protection plate piece and the overall structure of fixed half cover protection plate piece are symmetrical each other.

The inside of carefully chosen moving sleeve plate body bottom both sides all joint has the guide bar, and the other end fixed connection of guide bar is on the top surface of fixed sleeve plate body casing.

The inside of carefully chosen, reciprocating drive mechanism is provided with the mount, and the lateral wall of mount and the inside bracing piece fixed connection of half cover backplate spare support each other, the inboard fixed sleeve of mount has assisted hydraulic stem, and the output fixedly connected with linkage board of assisted hydraulic stem, the one end of linkage board extends to the rear end structural surface of moving the cover board body, carries out welded fastening to the junction between them then.

The cable end is characterized in that the locking plate comprises a main supporting sleeve plate and a movable locking sleeve plate arranged at the top of the main supporting sleeve plate in an aligned mode, the top of the main supporting sleeve plate and the inner wall of the movable locking sleeve plate form a ring sleeve space, the ring sleeve space is sleeved on the surface of the cable end, a pressure sensor is fixedly sleeved on the inner side of the middle of the movable locking sleeve plate and is in fit connection with the surface of the cable end, and a structure of the front end and the rear end of the top of the main supporting sleeve plate is in lock connection with a structure of the front end and the rear end of the bottom of the movable locking sleeve plate through bolts and nuts, and the end of the cable is fixed.

And carefully chosen, the inner sides of the bottoms of the two movable locking sleeve plates are clamped with one ends of the two guide rails, and the two movable locking sleeve plates are mutually symmetrical.

The two-way transmission mechanism is composed of a base and main detection hydraulic rods symmetrically sleeved on two sides of the top of the base, the output ends of the two main detection hydraulic rods are respectively and fixedly connected with the side walls of the bottoms of the two main support sleeve plates, the bottom of the base is fixedly connected to the top surface of the middle of the workbench, and displacement sensors are arranged on the outer sides of the two main detection hydraulic rods.

Compared with the prior art, the utility model has the following beneficial effects:

1. after the fixed half sheath plate, the movable half sheath plate and the reciprocating transmission mechanism are assembled in a matched mode, the multifunctional detection protection device can be formed, cables to be detected in the subsequent use process are symmetrically sheathed and protected integrally by the fixed half sheath plate and the movable half sheath plate, and when the cable breaks and jumps out in an unexpected condition, the first damping sheath plate and the second damping sheath plate and the first compression spring and the second compression spring in the multifunctional detection protection device respectively conduct friction energy dissipation and structural deformation buffering on impact force of a broken structure of the cable, the damage degree of broken impact of the cable is reduced, sustainable use of the multifunctional detection protection device is guaranteed, and cost is reduced.

2. According to the multifunctional detection protection device formed by matching and assembling the fixed half-sleeve protection plate, the movable half-sleeve protection plate and the reciprocating transmission mechanism, the fixed half-sleeve protection plate and the movable half-sleeve protection plate in the multifunctional detection protection device can be reciprocally separated or reset to be aligned to move under the transmission of the reciprocating transmission mechanism, so that the overhaul operation of subsequent staff is facilitated, and the sustainable use performance of the multifunctional detection protection device is further optimized.

3. After the bidirectional transmission mechanism, the two guide rails, the small-sized laser distance measuring device, the two displacement sensors, the two locking plates and the pressure sensors arranged in the two locking plates are assembled in a matched mode, a multifunctional toughness detection device can be formed, in the process of automatically stretching and detecting toughness of a cable, besides pressure information collected by the pressure sensors, the small-sized laser distance measuring device can detect the distance value between the two locking plates in real time to obtain length data of cable stretching deformation, a detection database is further perfected, and accuracy of a detection structure is improved.

Drawings

FIG. 1 is a schematic elevational view of the structure of the present utility model;

FIG. 2 is a schematic top view of the structure of the present utility model;

FIG. 3 is a schematic bottom view of the structure of the present utility model;

FIG. 4 is an enlarged schematic view of the utility model at A in FIG. 2;

fig. 5 is an enlarged schematic view of the present utility model at B in fig. 3.

In the figure: 1. a work table; 2. a cable; 3. a guide rail; 4. a half set of protection plate pieces are fixed; 41. a fixed sleeve plate body; 42. a first damping sleeve plate; 43. a first compression spring; 44. the first limit sleeve plate; 5. a movable half sheath plate; 51. a moving sleeve plate body; 52. a second damping sleeve plate; 53. the second limit sleeve plate; 54. a second compression spring; 6. a reciprocating transmission mechanism; 61. a fixing frame; 62. an auxiliary hydraulic rod; 63. a linkage plate; 7. locking the plate; 71. a main support sleeve plate; 72. a movable locking sleeve plate; 8. a two-way transmission mechanism; 81. a base; 82. mainly detecting a hydraulic rod; 9. a small-sized laser range finder; 10. a guide rod; 11. a displacement sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, fig. 2, fig. 4, a toughness detection device for cable production includes a guide rail 3 fixedly connected with two sides of the top of a workbench 1, a cable 2 is disposed at the top of the workbench 1, a fixed half-sleeve protection plate 4 is sleeved on the outer side of the middle of the cable 2, the structure of the bottom of the fixed half-sleeve protection plate 4 is extended and installed on the top surface of the middle of the workbench 1, a fixed half-sleeve protection plate body 41 is disposed inside the fixed half-sleeve protection plate 4, the inner sides of two ends of the fixed half-sleeve protection plate body 41 are respectively clamped with a first damping sleeve plate 42 and are respectively fixedly sleeved with a first limiting sleeve plate 44, a first compression spring 43 is fixedly connected between the inner sides of the middle of the two first damping sleeve plates 42 and the first limiting sleeve plate 44, the surfaces of two ends of the fixed half-sleeve protection plate body 41 are respectively fixedly connected with a support rod, and the support rod extends to the top surface of the workbench 1, then the bottom structure of the fixed half-sleeve protection plate 4 is fixedly installed on the top surface of the workbench 1 through screws, and the inner space of the fixed half-sleeve protection plate 4 forms a semicircular ring protection space for the cable 2, and the fixed half-sleeve protection plate 4 is also provided with a support condition for the subsequent protection plate.

Referring to fig. 1, 3 and 5, a movable half sheath member 5 is disposed on the outer side of the fixed half sheath member 4, a movable sheath member 51 is disposed in the movable half sheath member 5, the inner sides of two ends of the movable sheath member 51 are respectively and fixedly connected with a second damping sheath member 52 and a second limiting sheath member 53, the inner sides of the middle parts of the two second damping sheath members 52 are movably connected with the cable 2 in a sleeved mode, a second compression spring 54 is fixedly connected between the second damping sheath member 52 and the second limiting sheath member 53, the overall structure of the movable half sheath member 5 and the overall structure of the fixed half sheath member 4 are mutually symmetrical, guide rods 10 are respectively and fixedly connected to the inner sides of two sides of the bottom of the movable sheath member 51, the other ends of the guide rods 10 are fixedly connected to the top surface of the casing of the fixed sheath member 41, the guide rods 10 can guide the reciprocating movement between the movable half sheath member 5 and the fixed half sheath member 4, and the inner space of the movable half sheath member 5 forms a semicircular ring protection space for the cable 2, and the fixed half sheath member 4 is matched with the fixed half sheath member 4 to realize full-coverage protection of the cable 2.

Referring to fig. 1, 3 and 5, a reciprocating transmission mechanism 6 is disposed between the movable half-sleeve guard 5 and the fixed half-sleeve guard 4, a fixing frame 61 is disposed in the reciprocating transmission mechanism 6, the side wall of the fixing frame 61 is fixedly connected with a supporting rod in the fixed half-sleeve guard 4, and the fixed half-sleeve guard is mutually supported, an auxiliary hydraulic rod 62 is fixedly sleeved on the inner side of the fixing frame 61, an output end of the auxiliary hydraulic rod 62 is fixedly connected with a linkage plate 63, one end of the linkage plate 63 extends to the rear end structural surface of the movable sleeve plate 51, then the connection part of the two is welded and fixed, the fixed half-sleeve guard 4, the movable half-sleeve guard 5 and the reciprocating transmission mechanism 6 are assembled, a multifunctional detection protection device can be formed, the cable 2 to be detected in the subsequent use process, the fixed half-sleeve guard 4 and the movable half-sleeve guard 5 are integrally symmetrically sleeved and protected, and in the detection process is summarized, when the cable 2 breaks and the unexpected situation occurs, the first damping plate 42 and the second damping plate 52, the first compression spring 43 and the second compression spring 54 in the multifunctional detection protection device have the unexpected situation, and the impact force of breaking structure of the cable 2 is reduced, the impact resistance of the cable 2 is reduced, and the impact resistance is reduced, and the cost is guaranteed.

Referring to fig. 1 and 2, the surfaces of two ends of the cable 2 are respectively sleeved with locking plate members 7, the inner sides of the bottoms of the two locking plate members 7 are respectively clamped and limited with one end of the corresponding two guide rails 3, the middle of one locking plate member 7 is provided with a small-sized laser range finder 9, the locking plate member 7 is composed of a main supporting sleeve plate 71 and a movable locking sleeve plate 72 aligned with the tops of the main supporting sleeve plate 71, the tops of the main supporting sleeve plate 71 and the inner walls of the movable locking sleeve plate 72 form a ring sleeve space, and then the ring sleeve space is sleeved on the surface of the end of the cable 2, the inner sides of the middle of the movable locking sleeve plate 72 are fixedly sleeved with pressure sensors, the pressure sensors are in fit connection with the surface of the end of the cable 2, the structures of the front end and the rear end of the top of the main supporting sleeve plate 71 are in lock connection with the front end and the rear end structures of the bottom of the movable locking sleeve plate 72 by bolts and nuts, the end of the cable 2 is fixed, the inner sides of the bottoms of the two movable locking sleeve plate 72 are clamped with one ends of the two guide rails 3, the two movable locking sleeve plates 72 are mutually symmetrical, the two locking sleeve plates 7 can detachably fix the cable 2, and the cable 2 is stably fixed, and the cable 2 is stably detected.

Referring to fig. 1 and 2, a bidirectional transmission mechanism 8 is installed at the top of the workbench 1, the output ends of power structures at two sides inside the bidirectional transmission mechanism 8 are respectively and correspondingly connected with the bottoms of two locking plates 7, the bidirectional transmission mechanism 8 is composed of a base 81 and main detection hydraulic rods 82 symmetrically sleeved at two sides of the top of the base 81, the output ends of the two main detection hydraulic rods 82 are respectively and fixedly connected with the bottom side walls of the two main support sleeve plates 71, the bottom of the base 81 is fixedly connected to the top surface of the middle part of the workbench 1, displacement sensors 11 are arranged at the outer sides of the two main detection hydraulic rods 82, the displacement sensors 11 limit the moving distance of the main detection hydraulic rods 82, after the bidirectional transmission mechanism 8, the two guide rails 3, the small-sized laser distance measuring devices 9, the two displacement sensors 11, the two locking plates 7 and the pressure sensors arranged inside the two locking plates 7 are matched and assembled, a multifunctional toughness detection device can be formed, and in the process of automatically stretching and detecting the toughness of the cable 2, besides the pressure information is collected by the pressure sensors, the small-sized laser distance measuring devices 9 can accurately measure the moving distance between the two cable plates 7, the two cable deformation detection values, and the data base is further accurately detected, and the data of the length between the two cable deformation structures is detected.

Working principle: when the hydraulic power transmission mechanism is used, the auxiliary hydraulic rod 62 in the reciprocating transmission mechanism 6 is closed, the auxiliary hydraulic rod 62 drives the movable half-sleeve guard plate 5 and the fixed half-sleeve guard plate 4 to be aligned and sleeved, one end of the cable 2 respectively penetrates through the space between the main support sleeve plate 71 and the movable locking sleeve plate 72 in one locking plate 7, the space between the movable sleeve plate body 51 and the fixed sleeve plate body 41, the space between the second damping sleeve plate 52 and the first damping sleeve plate 42 and the space between the second limiting sleeve plate 53 and the first limiting sleeve plate 44, further extends to the space between the other main support sleeve plate 71 and the movable locking sleeve plate 72 and protrudes, the length is aligned and adjusted, after the main support sleeve plate 71 and the movable locking sleeve plate 72 in the two locking plate 7 are fixedly locked by adopting bolts and nuts, two ends of the cable 2 are fixed, and the pressure drivers arranged on the inner sides of the two movable locking sleeve plates 72 are attached to the surfaces of two ends of the cable 2;

after the steps are finished, the operation is carried out under different conditions, and the specific description is as follows;

firstly, testing the toughness of a cable at a specified stretching distance, firstly starting two displacement sensors 11 and a small-sized laser range finder 9 which are correspondingly arranged at the top of a workbench 1, then synchronously starting two main detection hydraulic rods 82, respectively driving two locking plate pieces 7 by the output ends of the two main detection hydraulic rods 82, respectively carrying out separation movement along the direction of a correspondingly clamped guide rail 3 until the two locking plate pieces 7 move to the positions of the displacement sensors 11 arranged in the respective directions, and stopping the movement of the main detection hydraulic rods 82, and recording the pressure data of a pressure driver, the spacing data of the small-sized laser range finder 9 and the specific state of the cable 2;

secondly, testing the limit toughness of the cable, starting the small-sized laser range finder 9, then synchronously starting the two main detection hydraulic rods 82, respectively driving the two locking plate pieces 7 by the output ends of the two main detection hydraulic rods 82, respectively carrying out separation movement along the direction of the guide rail 3 correspondingly clamped until the two locking plate pieces 7 move to the cable 2 to be broken, recording the pressure data of the pressure transmitter and the distance data of the small-sized laser range finder 9 at the moment, and respectively carrying out friction energy dissipation and structural deformation buffering by the impact force of the free end after the cable 2 is broken by the first damping sleeve plate 42 and the second damping sleeve plate 52 and the first compression spring 43 and the second compression spring 54.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Meanwhile, in the drawings of the present utility model, the filling pattern is only for distinguishing the layers, and is not limited in any way.

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

Claims (8)

1. The utility model provides a toughness detection device for cable production, includes both sides fixedly connected with guide rail (3) at workstation (1) top, and the top of workstation (1) is provided with cable (2), its characterized in that: the outside cover at cable (2) middle part is equipped with and decides half cover protection plate (4), and decides on the top surface at half cover protection plate (4) bottom the structure extension installation workstation (1) middle part, the outside of deciding half cover protection plate (4) is provided with and moves half cover protection plate (5), decides to be provided with reciprocal drive mechanism (6) between half cover protection plate (4), the surface at cable (2) both ends all overlaps and is equipped with closure plate (7), and the inboard of two closure plate (7) bottoms is spacing with the one end joint of two guide rails (3) that correspond respectively, and the mid-mounting of one of them closure plate (7) has small-size laser range finder (9), bidirectional drive mechanism (8) are installed at the top of workstation (1), and bidirectional drive mechanism (8) inside both sides power structure's output is connected with the bottom of two closure plate (7) respectively.

2. The toughness detection device for cable production according to claim 1, wherein: the inside of deciding half cover protection plate (4) is provided with decides cover board body (41), and decides the inboard at cover board body (41) both ends and all fixedly cup joints first damping cover board (42) and all fixedly cup joints first spacing cover board (44), and the inboard at two first damping cover board (42) middle parts cup joints with cable (2) activity, fixedly connected with first compression spring (43) between first damping cover board (42) and first spacing cover board (44), the equal fixedly connected with bracing piece in surface of cover board body (41) both ends bottom, and the bracing piece extends to the top surface of workstation (1), makes self bottom structure and the top surface fixed mounting of workstation (1) through the screw afterwards.

3. The toughness detection device for cable production according to claim 1, wherein: the inside of moving half cover backplate spare (5) is provided with moves cover plate body (51), and moves the inboard at cover plate body (51) both ends and all fixedly cup joints second damping sleeve plate (52) and all cup joints second spacing sleeve plate (53), and the inboard at two second damping sleeve plate (52) middle parts cup joints with cable (2) activity, fixedly connected with second compression spring (54) between second damping sleeve plate (52) and the second spacing sleeve plate (53), the overall structure of moving half cover backplate spare (5) and the overall structure of fixing half cover backplate spare (4) symmetry each other.

4. A toughness testing apparatus for cable manufacture according to claim 3, wherein: the inside of moving sleeve plate body (51) bottom both sides all joint has guide bar (10), and the other end fixed connection of guide bar (10) is on the top surface of fixed sleeve plate body (41) casing.

5. The toughness detection device for cable production according to claim 2, wherein: the inside of reciprocal drive mechanism (6) is provided with mount (61), and the lateral wall of mount (61) is with the inside bracing piece fixed connection of half cover protection plate piece (4), supports each other, the inboard fixed sleeve of mount (61) has assisted hydraulic stem (62), and the output fixedly connected with gangboard (63) of assisted hydraulic stem (62), the rear end structural surface of movable sleeve plate body (51) is extended to one end of gangboard (63), carries out welded fastening to the junction between them then.

6. The toughness detection device for cable production according to claim 1, wherein: the locking plate (7) is composed of a main supporting sleeve plate (71) and a movable locking sleeve plate (72) which is arranged at the top of the main supporting sleeve plate (71) in an aligned mode, the top of the main supporting sleeve plate (71) and the inner wall of the movable locking sleeve plate (72) form a ring sleeve space, the ring sleeve space is sleeved on the surface of the end head of the cable (2), a pressure sensor is fixedly sleeved on the inner side of the middle of the movable locking sleeve plate (72), the pressure sensor is in fit connection with the surface of the end head of the cable (2), and a bolt and a nut are adopted to conduct locking connection between the structure of the front end and the rear end of the top of the main supporting sleeve plate (71) and the structure of the front end and the rear end of the bottom of the movable locking sleeve plate (72), and the end head of the cable (2) is fixed.

7. The toughness detection device for cable production according to claim 6, wherein: the inner sides of the bottoms of the two movable locking sleeve plates (72) are clamped with one ends of the two guide rails (3), and the two movable locking sleeve plates (72) are symmetrical to each other.

8. The toughness detection device for cable production according to claim 1, wherein: the bidirectional transmission mechanism (8) consists of a base (81) and main detection hydraulic rods (82) symmetrically sleeved on the two sides of the top of the base (81), the output ends of the two main detection hydraulic rods (82) are respectively and fixedly connected with the bottom side walls of the two main support sleeve plates (71), the bottom of the base (81) is fixedly connected to the top surface of the middle of the workbench (1), and displacement sensors (11) are arranged on the outer sides of the two main detection hydraulic rods (82).