Cable sheath material performance detection device

Abstract

The invention relates to the technical field of cable sheath detection, in particular to a cable sheath material performance detection device. A base is included; two supporting plates are symmetrically installed on the upper end face of the base front and back, a horizontal stretching mechanism is arranged between the two supporting plates, and vertical pushing and pressing mechanisms matched with the horizontal stretching mechanism are arranged on the supporting plates. According to the invention, three different stretching detection modes of horizontal stretching, vertical stretching and horizontal and vertical synchronous stretching are integrated, so that various stress conditions of the cable sheath in actual use can be more comprehensively simulated; the comprehensive detection can ensure that the performance of the cable sheath in different stress modes can be fully evaluated, different stretching modes can be switched more quickly and more accurately through single driving, the waiting time in the operation process is shortened, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable sheath detection, and in particular to a cable sheath material performance detection device. Background Art

[0002] The cable sheath is an important component of the cable structure and is located at the outermost layer of the cable. Its main function is to protect the cable from damage by the external environment, including mechanical damage, moisture intrusion, chemical corrosion, ultraviolet radiation, and prevention of animal gnawing, etc. The large rubber cable sheath is a type of cable sheath. The large rubber cable sheath needs to be tested in terms of tensile strength, compression resistance, heat resistance, etc. before mass production. However, the existing large rubber cable sheaths usually only test one stretching method when performing tensile strength testing. This leads to the fact that when evaluating the performance of the large rubber cable sheath, due to the limitations of the test, the stress conditions are not fully tested or evaluated, and some large rubber cable sheaths may show good strength when stretched horizontally, but have poor performance when stretched vertically or stretched horizontally and vertically simultaneously, resulting in inaccurate performance testing of the large rubber cable sheath. Summary of the invention

[0003] In view of the above problems, an embodiment of the present application provides a cable sheath material performance detection device to solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: the embodiment of the present application provides a cable sheath material performance detection device, including a base; two support plates are symmetrically installed on the front and rear ends of the upper end surface of the base, a horizontal stretching mechanism is arranged between the two support plates, and a vertical pushing mechanism cooperating with the horizontal stretching mechanism is arranged on the support plate.

[0005] As a preferred embodiment, the horizontal stretching mechanism includes a waist-shaped groove, a waist-shaped groove is opened on the support plate located on the front side, and the rear end surface of the support plate located on the front side is slidably installed with two support plates through a linear guide rail, and the front end surfaces of the two support plates are installed with fixed blocks, and the fixed blocks slide through the waist-shaped groove, and compression springs are installed on the opposite sides of the two fixed blocks, and a rectangular plate is installed after the end of the compression spring away from the corresponding fixed block slides through the support plate, and the rectangular plate is installed on the corresponding support plate.

[0006] As a preferred solution, the fixing block is provided with a clamping portion for clamping and fixing the end of the cable sheath, a driving portion is provided between the two support plates, and the fixing block, the clamping portion and the vertical pushing mechanism are all driven by the driving portion.

[0007] As a preferred embodiment, the clamping portion includes a slot, the front end face of the fixed block is provided with a slot, two receiving plates are slidably installed in the slot, and the front section of the receiving plate extends out of the slot, and a clamping block located outside the slot is installed on each of the opposite surfaces of the two receiving plates, and a linkage part for driving the two receiving plates to move is provided on the fixed block.

[0008] As a preferred solution, the driving part includes a bidirectional screw, and the rear end surface of the support plate located on the front side is rotatably mounted with the bidirectional screw through an axle seat, each of the two threaded sections of the bidirectional screw is threadedly connected to a screw block, and the screw block is slidably connected to the support plate located on the rear side through a linear guide rail, a driven gear is installed in the middle of the bidirectional screw, and blocking plates that interfere with the corresponding screw blocks are installed on the opposite sides of the two fixed blocks.

[0009] As a preferred embodiment, the linkage member includes a square plate, a square plate is installed on the front end face of the fixed block, a rotating shaft is rotatably installed between the square plate and the fixed block, a No. 1 spur gear located in the slot is installed on the rotating shaft, and a No. 2 spur gear is installed after the rear end of the rotating shaft rotates through the corresponding fixed block and the support plate, a No. 1 tooth plate is meshed on each of the left and right sides of the No. 1 spur gear, and one of the No. 1 tooth plates is fixedly connected to the receiving plate located above, and the other No. 1 tooth plate is fixedly connected to the receiving plate located below, and a No. 2 tooth plate meshing with the No. 2 spur gear is installed on the front end face of the screw block.

[0010] As a preferred embodiment, the vertical pushing mechanism includes a slider, the front end surface of the support plate located on the front side is slidably mounted with the slider, the lower part of the front end surface of the slider is mounted with an extrusion block, the lower part of the extrusion block is provided with a U-shaped groove, the upper end surface of the support plate located on the front side is mounted with a column, a fixed plate is slidably mounted on the column, a compression spring is installed between the fixed plate and the corresponding support plate, and an actuator for pushing the fixed plate is provided on the support plate located on the rear side.

[0011] As a preferred embodiment, the actuator includes a guide rod, and two guide rods are symmetrically installed on the upper end surface of the support plate located on the rear side, and a top plate is slidably installed on the guide rods. A hydraulic cylinder is installed on the rear end surface of the support plate located on the rear side, and the telescopic end of the hydraulic cylinder is connected to the top plate. A waist groove is opened on the top plate, and a waist-shaped plate is slidably installed in the waist groove. Three racks are evenly installed on the end surface of the waist-shaped plate from left to right, and the rack located on the far right is an incomplete rack. An adjustment part is arranged on the top plate, and a limiting part is arranged on the base.

[0012] As a preferred solution, the adjusting member includes a C-shaped plate. The C-shaped plate is slidably mounted on the front end face of the top plate. The horizontal end of the C-shaped plate is fixedly connected to the waist-shaped plate. Limiting holes are provided at positions on the top plate corresponding to the three racks one by one. A T-shaped rod is mounted on the C-shaped plate through a tension spring. The vertical end of the T-shaped rod slidably penetrates through the upper horizontal section of the C-shaped plate and then cooperates with the limiting hole. Pressure plates are mounted at positions on the front end face of the C-shaped plate corresponding to the two right-side racks one by one.

[0013] As a preferred solution, the limiting member includes a bottom plate. The bottom plate is slidably mounted on the base and directly below the driven gear. A return spring is mounted between the bottom plate and the support plate. A limiting toothed plate is mounted at the rear side of the upper end face of the bottom plate. A抵触 plate is mounted on the upper end face of the bottom plate and in front of the rack. The upper end face of the抵触 plate is an inclined surface. A pushing block that抵触s the抵触 plate is mounted on the front end face of the rightmost rack, and the pushing block has a right trapezoidal structure with an inclined surface on the lower side.

[0014] As a preferred solution, elastic pre-fixing rings are mounted on the opposite sides of the two lower clamping blocks, and the elastic pre-fixing rings have an inverted Ω-shaped structure. The edges of the wave trough ports on the opposite faces of the two lower clamping blocks are all rounded.

[0015] As a preferred solution, the opposite faces of the upper and lower clamping blocks are complementary wave-shaped structures, and complementary wave troughs are provided on the wave surfaces of the clamping blocks.

[0016] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects: By integrating three different stretching detection methods, namely horizontal stretching, vertical stretching, and synchronous horizontal and vertical stretching, the present invention can more comprehensively simulate various stress conditions encountered by large rubber cable sheaths in actual use. This comprehensive detection can ensure that the performance of large rubber cable sheaths under different stress modes can be fully evaluated, and through a single drive, different stretching modes can be switched more quickly and accurately, reducing the waiting time during the operation process and improving the detection efficiency.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0019] Figure 1Schematic diagram of the three-dimensional structure of the present application.

[0020] Figure 2 It is Figure 1 Schematic diagram of the structure after removing the front support plate.

[0021] Figure 3 It is Figure 2 Schematic diagram of the structure after the top plate is offset.

[0022] Figure 4 Schematic diagram of the three-dimensional structure of the adjusting part of the present application.

[0023] Figure 5 Schematic diagram of the limiting part structure of the present application.

[0024] Figure 6 Partial structural cross-sectional view of the linkage part of the present application.

[0025] Figure 7 Schematic diagram of the clamping part structure of the present application.

[0026] Figure 8 Schematic diagram of the structure between the first spur gear and the first toothed plate of the present application.

[0027] Fig. 9 Schematic diagram of the clamping block structure of the present application.

[0028] Fig.10 Schematic diagram of the structure between the clamping block and the cable sheath of the present application.

[0029] Reference numerals: 10, base; 11, support plate; 2, horizontal stretching mechanism; 20, waist-shaped groove; 21, support plate; 22, fixing block; 23, compression spring; 24, rectangular plate; 25, clamping part; 250, receiving plate; 251, clamping block; 2510, wave groove; 2511, elastic pre-fixing ring; 252, linkage part; 2520, rotating shaft; 2521, first spur gear; 2522, second spur gear; 2523, first toothed plate; 2524, second toothed plate; 26, driving part; 260, bidirectional screw; 261, screw block; 262, driven gear; 263, blocking plate; 3, vertical pressing mechanism; 30, slider; 31, extrusion block; 32, column; 33, fixing plate; 34, compression spring; 35, execution part; 350, guide rod; 351, top plate; 352, hydraulic cylinder; 353, waist-shaped plate; 354, rack; 355, adjusting part; 3550, C-shaped plate; 3551, limiting hole; 3552, T-shaped rod; 3553, pressing plate; 356, limiting part; 3560, bottom plate; 3561, return spring; 3562, limiting toothed plate; 3563,抵触 plate; 3564, pushing block. Detailed implementation manners

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] like Figure 1 As shown, a cable sheath material performance testing device includes a base 10; two support plates 11 are symmetrically installed on the front and rear ends of the upper end surface of the base 10, a horizontal stretching mechanism 2 is arranged between the two support plates 11, and a vertical pushing mechanism 3 cooperating with the horizontal stretching mechanism 2 is arranged on the support plate 11.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the horizontal stretching mechanism 2 includes a waist-shaped groove 20, and a waist-shaped groove 20 is opened on the support plate 11 located on the front side. The rear end surface of the support plate 11 located on the front side is slidably installed with two support plates 21 through a linear guide rail. The front end surfaces of the two support plates 21 are both installed with fixed blocks 22, and the fixed blocks 22 slide through the waist-shaped groove 20. Compression springs 23 are installed on the opposite sides of the two fixed blocks 22. A rectangular plate 24 is installed after the end of the compression spring 23 away from the corresponding fixed block 22 slides through the support plate 11, and the rectangular plate 24 is installed on the corresponding support plate 11.

[0033] like Figure 1 and Figure 2 As shown, the fixing block 22 is provided with a clamping portion 25 for clamping and fixing the end of the cable sheath, a driving portion 26 is provided between the two support plates 11, and the fixing block 22, the clamping portion 26 and the vertical pushing mechanism 3 are all driven by the driving portion 26.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, the clamping portion 25 includes a slot, and the front end surface of the fixed block 22 is provided with a slot, and two receiving plates 250 are installed in the slot for sliding up and down, and the front section of the receiving plate 250 extends out of the slot, and a clamping block 251 located outside the slot is installed on each of the opposite surfaces of the two receiving plates 250, and a linkage member 252 for driving the two receiving plates 250 to move is provided on the fixed block 22.

[0035] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the driving part 26 includes a bidirectional screw 260, and the rear end surface of the support plate 11 located on the front side is rotatably mounted with the bidirectional screw 260 through an axle seat, and each of the two threaded sections of the bidirectional screw 260 is threadedly connected with a screw block 261, and the screw block 261 is slidably connected to the support plate 11 located on the rear side through a linear guide rail, and a driven gear 262 is installed in the middle of the bidirectional screw 260, and blocking plates 263 that abut against the corresponding screw blocks 261 are installed on the opposite sides of the two fixed blocks 22.

[0036] like Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the linkage member 252 includes a square plate, the front end surface of the fixed block 22 is installed with a square plate, a rotating shaft 2520 is rotatably installed between the square plate and the fixed block 22, a No. 1 spur gear 2521 located in the slot is installed on the rotating shaft 2520, and a No. 2 spur gear 2522 is installed after the rear end of the rotating shaft 2520 rotates through the corresponding fixed block 22 and the support plate 21, and a No. 1 tooth plate 2523 is meshed on the left and right sides of the No. 1 spur gear 2521, and one of the No. 1 tooth plates 2523 is fixedly connected to the receiving plate 250 located above, and the other No. 1 tooth plate 2523 is fixedly connected to the receiving plate 250 located below, and a No. 2 tooth plate 2524 meshing with the No. 2 spur gear 2522 is installed on the front end surface of the screw block 261.

[0037] like Fig. 9 and Fig.10 As shown, the opposing surfaces of the upper and lower clamping blocks 251 are complementary wave-shaped structures, and complementary wave grooves 2510 are formed on the wave surfaces of the clamping blocks 251 .

[0038] like Fig. 9 As shown, elastic pre-fixed rings 2511 are installed on the opposite sides of the two clamping blocks 251 located at the bottom, and the elastic pre-fixed rings 2511 are inverted Ω-shaped structures. The edges of the wave grooves 2510 ports on the opposite sides of the two clamping blocks 251 located at the bottom are chamfered.

[0039] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the vertical pushing mechanism 3 includes a slider 30, the front end surface of the support plate 11 located on the front side is slidably mounted with the slider 30, the lower part of the front end surface of the slider 30 is mounted with an extrusion block 31, the lower part of the extrusion block 31 is provided with a U-shaped groove, the upper end surface of the support plate 11 located on the front side is mounted with a column 32, a fixed plate 33 is slidably mounted on the column 32, a compression spring 34 is installed between the fixed plate 33 and the corresponding support plate 11, and an actuator 35 for pushing the fixed plate 33 is provided on the support plate 11 located on the rear side.

[0040] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the actuator 35 includes a guide rod 350, and two guide rods 350 are symmetrically installed on the upper end surface of the support plate 11 located at the rear side, and a top plate 351 is slidably installed on the guide rods 350. A hydraulic cylinder 352 is installed on the rear end surface of the support plate 11 located at the rear side, and the telescopic end of the hydraulic cylinder 352 is connected to the top plate 351. A waist groove is opened on the top plate 351, and a waist-shaped plate 353 is slidably installed in the waist groove. Three racks 354 are evenly installed on the end surface of the waist-shaped plate 353 from left to right, and the rack 354 located on the far right is an incomplete rack 354. An adjusting member 355 is arranged on the top plate 351, and a limiting member 356 is arranged on the base 10.

[0041] During specific operation, the two ends of the cable sheath are manually passed through the corresponding two clamping blocks 251 and then clamped into the corresponding elastic pre-fixing ring 2511 to pre-fix the cable sheath. Then the hydraulic cylinder 352 pulls the top plate 351 downward, and the top plate 351 drives the driven gear 262 to rotate through the leftmost rack 354, and the driven gear 262 drives the bidirectional screw 260 to rotate. The bidirectional screw 260 drives the two screw blocks 261 away from each other, and the screw block 261 drives the No. 2 toothed plate 2524 to move toward the No. 2 spur gear 2522. Since the fixed block 22 is resisted by the compression spring 23, it will not move synchronously with the screw block 261, so that the No. 2 toothed plate 2524 meshes with the No. 2 spur gear 2522 and drives the No. 2 spur gear 2522 to rotate, and the No. 2 spur gear 2522 drives the No. 2 spur gear 2522 through the rotating shaft 2520. The No. 1 spur gear 2521 rotates, and the No. 1 spur gear 2521 drives the corresponding two receiving plates 250 to approach each other through the corresponding two No. 1 tooth plates 2523, so that the clamping block 251 squeezes the cable sheath, and the end of the cable sheath is bent into a wavy structure to increase the friction between the cable sheath and the clamping block 251, thereby ensuring the stability of the cable sheath during the stretching process. After that, the clamping block 251 clamps the cable sheath in place, and at the same time, the screw block 261 contacts the corresponding blocking plate 263. As the bidirectional screw 260 continues to rotate, the force of the screw block 261 pushing the fixed block 22 through the blocking plate 263 is greater than the force that causes the compression spring 23 to deform. At this time, the two screw blocks 261 will drive the corresponding fixed blocks 22 away from each other to horizontally stretch the clamped cable sheath to test its tensile strength.

[0042] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in the figure, the adjusting member 355 includes a C-shaped plate 3550. The front end face of the top plate 351 is slidably installed with the C-shaped plate 3550. The horizontal end of the C-shaped plate 3550 is fixedly connected to the waist-shaped plate 353. Limiting holes 3551 are provided at positions on the top plate 351 corresponding to the three racks 354 one by one. A T-shaped rod 3552 is installed on the C-shaped plate 3550 through a tension spring. The vertical end of the T-shaped rod 3552 slidably penetrates the upper horizontal section of the C-shaped plate 3550 and then cooperates with the limiting hole 3551. Pressure plates 3553 are installed at positions on the front end face of the C-shaped plate 3550 corresponding to the two right-side racks 354 one by one.

[0043] As Figure 3 , Figure 4 and Figure 5 As shown in the figure, the limiting member 356 includes a bottom plate 3560. The bottom plate 3560 is slidably installed on the base 10 and directly below the driven gear 262. A return spring 3561 is installed between the bottom plate 3560 and the support plate 11. A limiting toothed plate 3562 is installed at the rear side of the upper end face of the bottom plate 3560. A contact plate 3563 is installed on the upper end face of the bottom plate 3560 and in front of the rack 354. The upper end face of the contact plate 3563 is an inclined surface. A pushing block 3564 that contacts the contact plate 3563 is installed on the front end face of the rightmost rack 354, and the pushing block 3564 has a right trapezoidal structure with an inclined surface on the lower side.

[0044] During specific operation, by pulling the T-shaped rod 3552 upward to move it, the vertical section of the T-shaped rod 3552 is moved away from the corresponding limiting hole 3551. Then, the C-shaped plate 3550 is moved so that the middle rack 354 meshes with the driven gear 262. At the same time, the corresponding pressure plate 3553 is moved directly above the fixing plate 33. Then, the T-shaped rod 3552 is released. Under the action of the compression spring 34, the T-shaped rod 3552 is inserted into the corresponding limiting hole 3551, so that the middle rack 354 maintains meshing with the driven gear 262. Then, the hydraulic cylinder 352 pulls the top plate 351 downward. The middle rack 354 drives the bidirectional screw 260 to rotate through the driven gear 262. The screw block 261 drives the clamping portion 25 to clamp the cable sheath through the linkage member 252 and horizontally stretch the cable sheath. At the same time, the fixing plate 33 is synchronously pushed downward through the pressure plate 3553. The fixing plate 33 drives the pressing block 31 through the slider 30 to vertically press the cable sheath, so as to realize the synchronous horizontal stretching and vertical pressing and stretching of the cable sheath.

[0045] When it is necessary to test the vertical tensile strength of the cable sheath, the limit piece 356 is manually released from the limit of the profile plate 3560, and then the profile plate 3550 is manually moved so that the rack 354 on the far right engages with the driven gear 262, and then the hydraulic cylinder 352 pulls the top plate 351 downward, and the tooth segment of the rack 354 on the far right will first drive the clamping part 25 to clamp and fix the cable sheath, and while the cable sheath is clamped and fixed, the inclined surface of the pushing block 3564 conflicts with the inclined surface of the contact plate 3563, pushing the contact plate 3563 to move forward, and the teeth of the limiting tooth plate 3562 are driven by the bottom plate 3560 to cooperate with the teeth of the driven gear 262 to limit the rotation of the driven gear 262. When the top plate 351 moves downward, the toothed section of the rack 354 on the far right is disengaged from the driven gear 262. As the rack 354 on the far right moves downward, the pushing block 3564 keeps pushing the abutment plate 3563. When the top plate 351 moves downward, it will only move downward by pressing the fixing plate 33 with the pressing plate 3553, so that the squeezing block 31 vertically presses the corresponding cable sheath to detect the tensile strength of the cable sheath when it is only pressed by the vertical force. The cable sheath is stretched in three different states through the adjusting member 355 and the limiting member 356, namely horizontal stretching, vertical stretching, and horizontal and vertical synchronous stretching, so that the strength of the cable sheath is tested from multiple force directions to ensure the accuracy of the test.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable sheath material performance detection device, comprising a base (10); characterized in that: Two support plates (11) are symmetrically mounted on the upper end face of the base (10) in the front and rear directions, a horizontal stretching mechanism (2) is arranged between the two support plates (11), and a vertical pushing mechanism (3) cooperating with the horizontal stretching mechanism (2) is arranged on the support plate (11); wherein: The horizontal stretching mechanism (2) comprises a waist-shaped groove (20), the waist-shaped groove (20) is provided on the support plate (11) located at the front side, the rear end surface of the support plate (11) located at the front side is slidably mounted with two support plates (21) via a linear guide rail, the front end surfaces of the two support plates (21) are both mounted with fixed blocks (22), and the fixed blocks (22) slide through the waist-shaped groove (20), the opposite sides of the two fixed blocks (22) are both mounted with compression springs (23), one end of the compression spring (23) away from the corresponding fixed block (22) slides through the support plate (11) and then is mounted with a rectangular plate (24), and the rectangular plate (24) is mounted on the corresponding support plate (11); The fixing block (22) is provided with a clamping portion (25) for clamping and fixing the end of the cable sheath, a driving portion (26) is provided between the two support plates (11), and the fixing block (22), the clamping portion (25) and the vertical pushing mechanism (3) are all driven by the driving portion (26).

2. A cable sheath material performance detection device according to claim 1, characterized in that: The clamping portion (25) comprises a notch, the front end surface of the fixed block (22) is provided with a notch, two receiving plates (250) are slidably mounted in the notch, and the front sections of the receiving plates (250) extend out of the notch, and opposite surfaces of the two receiving plates (250) are respectively provided with a clamping block (251) located outside the notch, and the fixed block (22) is provided with a linkage member (252) for driving the two receiving plates (250) to move.

3. A cable sheath material performance detection device according to claim 2, characterized in that: The driving part (26) comprises a bidirectional screw (260), the rear end surface of the support plate (11) located at the front side is rotatably mounted with the bidirectional screw (260) via a shaft seat, two threaded sections of the bidirectional screw (260) are each threadedly connected to a screw block (261), and the screw block (261) is slidably connected to the support plate (11) located at the rear side via a linear guide rail, a driven gear (262) is mounted in the middle of the bidirectional screw (260), and blocking plates (263) that abut against the corresponding screw blocks (261) are mounted on opposite sides of the two fixed blocks (22).

4. A cable sheath material performance detection device according to claim 3, characterized in that: The linkage member (252) described above includes a square plate. The front end face of the fixed block (22) is provided with a square plate. A rotating shaft (2520) is rotatably installed between the square plate and the fixed block (22). A first straight gear (2521) located within the notch is installed on the rotating shaft (2520). The rear end of the rotating shaft (2520) rotatably penetrates through the corresponding fixed block (22) and the support plate (21) and then a second straight gear (2522) is installed. One first straight gear (2521) meshes with a first toothed plate (2523) on each of the left and right sides. And one of the first toothed plates (2523) is fixedly connected to the upper receiving plate (250), and the other first toothed plate (2523) is fixedly connected to the lower receiving plate (250). The front end face of the screw block (261) is provided with a second toothed plate (2524) that meshes with the second straight gear (2522).

5. A cable sheath material performance detection device according to claim 1, characterized in that: The vertical pressing mechanism (3) described above includes a slider (30). The front end face of the front support plate (11) is slidably installed with a slider (30). The lower part of the front end face of the slider (30) is provided with a pressing block (31). A U-shaped groove is opened in the lower part of the pressing block (31). The upper end face of the front support plate (11) is provided with a column (32). A fixing plate (33) is slidably installed on the column (32). A compression spring (34) is installed between the fixing plate (33) and the corresponding support plate (11). An execution part (35) for pressing the fixing plate (33) is provided on the rear support plate (11).

6. A cable sheath material performance detection device according to claim 5, characterized in that: The execution part (35) includes a guide rod (350). Two guide rods (350) are symmetrically installed on the upper end face of the rear support plate (11) on the left and right. A top plate (351) is slidably installed on the two guide rods (350) together. The rear end face of the rear support plate (11) is provided with a hydraulic cylinder (352). The telescopic end of the hydraulic cylinder (352) is connected to the top plate (351). A waist-shaped groove is opened on the top plate (351). A waist-shaped plate (353) is slidably installed in the waist-shaped groove. Three toothed racks (354) are evenly installed on the end face of the waist-shaped plate (353) from left to right. The rightmost toothed rack (354) is an incomplete toothed rack (354). An adjustment part (355) is provided on the top plate (351). A limiting part (356) is provided on the base (10).

7. A cable sheath material performance detection device according to claim 6, characterized in that: The adjustment part (355) includes a C-shaped plate (3550). The front end face of the top plate (351) is slidably installed with a C-shaped plate (3550). The horizontal end of the C-shaped plate (3550) is fixedly connected to the waist-shaped plate (353). Limiting holes (3551) are opened at positions on the top plate (351) corresponding to the three toothed racks (354) one by one. A T-shaped rod (3552) is installed on the C-shaped plate (3550) through a tension spring. The vertical end of the T-shaped rod (3552) slidably penetrates through the upper horizontal section of the C-shaped plate (3550) and then cooperates with the limiting hole (3551). Pressure plates (3553) are installed at positions on the front end face of the C-shaped plate (3550) corresponding to the two rightmost toothed racks (354) one by one.

8. A cable sheath material performance detection device according to claim 6, characterized in that: The limiting member (356) comprises a base plate (3560), the base plate (3560) being slidably mounted on the base (10) and located directly below the driven gear (262), a return spring (3561) being mounted between the base plate (3560) and the support plate (11), a limiting tooth plate (3562) being mounted on the rear side of the upper end surface of the base plate (3560), a resistance plate (3563) being mounted on the upper end surface of the base plate (3560) and located in front of the rack (354), the upper end surface of the resistance plate (3563) being an inclined surface, a pushing block (3564) being mounted on the front end surface of the rightmost rack (354) and being in resistance with the pushing block (3564), and the pushing block (3564) being in a right-angled trapezoidal structure with an inclined surface on the lower side.

9. A cable sheath material performance detection device according to claim 2, characterized in that: Elastic pre-fixing rings (2511) are installed on opposite sides of the two clamping blocks (251) located at the bottom, and the elastic pre-fixing rings (2511) are in an inverted Ω-shaped structure. The edges of the wave grooves (2510) on the opposite sides of the two clamping blocks (251) located at the bottom are rounded.

10. A cable sheath material performance detection device according to claim 2, characterized in that: The opposing surfaces of the upper and lower clamping blocks (251) are complementary wave-shaped structures, and complementary wave grooves (2510) are provided on the wave surfaces of the clamping blocks (251).

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