A tensile test device for MPP cable conduit

Abstract

A MPP cable conduit tensile test device comprises a frame, a traction force applying mechanism, a fixing mechanism, a side pressure applying mechanism and a scratch simulation mechanism; the traction force applying mechanism comprises a traction frame, an extrusion block slidably and elastically mounted on the traction frame, an active clamping block slidably mounted on the extrusion block, and a clamping ring rotatably mounted on the traction frame; the fixing mechanism comprises a sliding frame 1, a fixing component 1 arranged on the sliding frame 1 for fixing a cable conduit body, and a fixing component 2 for fixing the sliding frame 1; the side pressure applying mechanism comprises a sliding frame 2, and a main extrusion plate slidably mounted on the sliding frame 2; the scratch simulation mechanism comprises a sliding frame 3 slidably mounted on the frame, a rotating ring rotatably mounted on the sliding frame 3, and a screw threadedly mounted on the rotating ring; the present invention can simulate different actual situations, and pull the cable conduit under various actual situations, so as to test the tensile effect of the cable conduit under different actual situations.

Description

Technical Field

[0001] The invention relates to the technical field of tube tensile testing, and in particular to an MPP cable conduit tensile testing device. Background Art

[0002] In the construction of modern power, communication and other infrastructure, MPP cable conduits are widely used to protect cable lines. With the continuous improvement of engineering requirements, the performance requirements for MPP cable conduits are becoming increasingly stringent, among which tensile performance is a crucial indicator.

[0003] With the increasing application of MPP cable conduits in various complex environments, such as underground laying and overhead laying, the requirements for their tensile properties have become more diverse. In actual projects, cable conduits may be subjected to tensile forces of different magnitudes, extrusion forces in different directions at the traction point, extrusion forces on the sides of the pipe body, and scratches may appear on the cable conduit body. In previous engineering practices, due to the lack of specialized, efficient and accurate MPP cable conduit tensile test equipment, it is often difficult to scientifically evaluate the actual tensile capacity of cable conduits in the above actual working conditions.

[0004] Therefore, a tensile test device capable of simulating various actual working conditions is needed to ensure the safety and reliability of the cable conduit during use. Summary of the invention

[0005] In view of the above problems, the present invention proposes an MPP cable conduit tensile test device, and the technical solution used is:

[0006] An MPP cable conduit tensile test device comprises a frame, and a traction force applying mechanism, a fixing mechanism, a side pressure applying mechanism and a scratch simulation mechanism arranged on the frame;

[0007] The traction force mechanism comprises a traction frame slidably mounted on the frame, an extrusion block slidably and elastically mounted on the traction frame, a movable clamping block slidably mounted on the extrusion block, a clamping ring rotatably mounted on the traction frame, and a rotating assembly 1 for driving the clamping ring to rotate; a limit block corresponding to the movable clamping block and intermittently pushing the movable clamping block is fixedly provided on the clamping ring;

[0008] The fixing mechanism comprises a sliding frame 1 slidably mounted on the frame, a fixing component 1 arranged on the sliding frame 1 for fixing the cable conduit body, and a fixing component 2 for fixing the sliding frame 1;

[0009] The side pressure mechanism comprises a sliding frame 2 slidably mounted on the frame, and a main extrusion plate slidably mounted on the sliding frame 2;

[0010] The scratch simulation mechanism comprises a sliding frame three slidably mounted on the frame, a rotating ring rotatably mounted on the sliding frame three, a screw threadedly mounted on the rotating ring, and a rotating assembly two for driving the rotating ring to rotate.

[0011] Furthermore, the rotating assembly 1 includes an adjusting motor fixedly mounted on the traction frame, a worm 1 rotatably mounted on the traction frame and coaxially fixedly connected to the output end of the adjusting motor, and a worm gear coaxially fixedly mounted on the retaining ring and meshing with the worm 1.

[0012] Furthermore, the traction force applying mechanism also includes a traction cylinder which is fixedly mounted on the frame and the telescopic end of which is fixedly connected to the traction frame.

[0013] Furthermore, the fixing assembly 1 includes a fixed clamping plate fixedly mounted on the sliding frame 1, a movable clamping plate rotatably mounted on the sliding frame 1, and a connecting bolt threadedly mounted on the movable clamping plate; the fixed clamping plate is provided with a thread matching the connecting bolt.

[0014] Furthermore, the fixing component 2 includes a card hole slot fixedly installed on the frame, a card rod slidably installed on the sliding frame 1, and a fixing cylinder fixedly installed on the sliding frame 1 and with the telescopic end fixedly connected to the card rod; the tail end of the card rod can extend into the card hole of the card hole slot.

[0015] Furthermore, the fixing mechanism also includes an adjusting screw 1 installed on the frame and threadedly connected to the sliding frame 1.

[0016] Furthermore, the side pressure mechanism also includes a main mounting frame slidably mounted on the sliding frame 2 and fixedly connected to the main extrusion plate, a main pushing cylinder fixedly mounted on the sliding frame 2 and with the telescopic end fixedly connected to the main mounting frame, a secondary mounting frame slidably and elastically mounted on the main mounting frame, a secondary extrusion plate fixedly mounted on the secondary mounting frame, a secondary pushing cylinder fixedly mounted on the main mounting frame, and a pushing plate fixedly mounted on the telescopic end of the secondary pushing cylinder and intermittently pushing the secondary mounting frame to move.

[0017] Furthermore, the side pressure mechanism also includes an adjusting screw 2 installed on the frame and threadedly connected to the sliding frame 2.

[0018] Furthermore, the rotating component 2 includes a rotating motor fixedly mounted on the sliding frame 3, a worm 2 rotatably mounted on the sliding frame 3 and coaxially fixedly connected to the output end of the rotating motor, and a worm gear ring coaxially fixedly mounted on the rotating ring and meshing with the worm 2.

[0019] Furthermore, the scratch simulation mechanism also includes an adjusting screw three installed on the frame and threadedly connected to the sliding frame three.

[0020] Since the present invention adopts the above technical solution, the present invention has the following advantages:

[0021] The present invention can simulate different actual situations through the coordinated design of the traction force applying mechanism, the fixing mechanism, the side pressure applying mechanism and the scratch simulation mechanism, and pull the cable conduit under various actual situations to test the tensile resistance of the cable conduit under different actual situations. The actual situations that can be simulated by the present invention include squeezing in different directions of the traction point, squeezing on the side of the tube body, and scratches on the tube body. Each situation can be tested separately or in combination. The test plan can be flexibly adjusted according to the test requirements, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1-Figure 8 It is a schematic diagram of the overall structure of the present invention.

[0023] Fig. 9 It is a structural schematic diagram of the traction force applying mechanism of the present invention.

[0024] Fig.10 This is a partial structural schematic diagram of the traction force applying mechanism of the present invention without the traction cylinder.

[0025] Fig.11 For the present invention Fig.10 Exploded view of the structure.

[0026] Fig.12 This is a partial structural schematic diagram of the traction force applying mechanism of the present invention without the traction cylinder and the traction frame.

[0027] Fig.13 It is a schematic diagram of the assembly structure of the fixing mechanism and the side pressure mechanism of the present invention.

[0028] Fig.14 This is a partial structural schematic diagram of the fixing mechanism of the present invention without removing the adjusting screw 1.

[0029] Fig.15 This is a partial structural schematic diagram of the side pressure mechanism of the present invention without removing the adjusting screw 2.

[0030] Fig.16 This is a partial structural schematic diagram of the side pressure mechanism of the present invention without removing the adjusting screw 2 and the sliding frame 2.

[0031] Fig.17 It is a structural schematic diagram of the scratch simulation mechanism of the present invention.

[0032] Fig.18 This is a schematic diagram of the partial structure of the scratch simulation mechanism of the present invention without removing the adjusting screw three.

[0033] Fig.19 It is a schematic diagram of the connection between the control terminal and the electrical components of the present invention.

[0034] Figure Number:

[0035] 1-frame; 101-support frame 1; 102-support frame 2; 103-support frame 3;

[0036] 2-traction force mechanism; 201-traction cylinder; 202-traction frame; 203-extrusion block; 204-movable clamping block; 205-clamping ring (2051-limiting block; 2052-worm gear); 206-worm one; 207-adjusting motor;

[0037] 3-fixing mechanism; 301-adjusting screw 1; 302-sliding frame 1; 303-fixed splint; 304-movable splint; 305-connecting bolt; 306-clamping hole slot; 307-clamping rod; 308-fixed cylinder;

[0038] 4-side pressure mechanism; 401-adjusting screw 2; 402-sliding frame 2; 403-main mounting frame; 404-main extrusion plate; 405-secondary mounting frame; 406-secondary extrusion plate; 407-push plate; 408-main push cylinder; 409-secondary push cylinder;

[0039] 5-scratch simulation mechanism; 501-adjusting screw three; 502-sliding frame three; 503-rotating ring (5031-worm gear ring); 504-screw; 505-worm two; 506-rotating motor;

[0040] 6-Control terminal. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further specifically described below by way of embodiments and 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, but 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.

[0042] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "in", "out", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] Example:

[0044] This embodiment is used for tensile testing of MPP cable conduits in various situations, such as Figure 1-Figure 8As shown, an MPP cable conduit tensile test device comprises a frame 1, a traction force applying mechanism 2, a fixing mechanism 3, a side pressure applying mechanism 4, a scratch simulation mechanism 5 and a control terminal 6; a support frame 101, a support frame 102 and a support frame 3 103 are fixedly provided on the frame 1, and the support frame 101 and the support frame 2 102 are respectively arranged on both sides of the support frame 3 103; the traction force applying mechanism 2 is installed on the support frame 101, the fixing mechanism 3 and the side pressure applying mechanism 4 are installed on the support frame 2 102, the scratch simulation mechanism 5 is installed on the support frame 3 103, and the control terminal 6 is installed on the base of the frame 1; a supporting frame is also fixedly installed on the frame 1 for supporting the cable conduit (the attached figure is for illustration only, and the actual scale of the tensile test device is set according to actual usage).

[0045] like Figure 9-12 As shown, the traction force mechanism 2 includes a traction cylinder 201, a traction frame 202, an extrusion block 203, a movable clamping block 204, a clamping ring 205, a worm 206 and an adjusting motor 207; the traction cylinder 201 is horizontally fixedly installed on the support frame 101, and its telescopic end is fixedly connected to the traction frame 202; the traction frame 202 body is annular, and its side is horizontally slidably installed on the support frame 101, and the traction frame 202 is located at the end away from the supporting frame; there are eight extrusion blocks 203, which are evenly distributed on the ring of the traction frame 202 along the circumference, and each extrusion block 203 slides radially and is elastically installed on the ring of the traction frame 202 by a compression spring; the axial inner end of the extrusion block 203 can squeeze the cable conduit; each extrusion block 203 is axially slidably installed with a movable clamping block 204 along the ring of the traction frame 202, and the movable clamping block 204 is provided with an arc-shaped protrusion protruding radially outward;

[0046] The clamping ring 205 is coaxially rotatably mounted on the circular ring of the traction frame 202. Eight limit blocks 2051 are evenly distributed and fixedly arranged on the clamping ring 205 corresponding to the movable clamping block 204 along the circumference. The limit blocks 2051 are in an arc shape protruding radially inward along the circular ring of the traction frame 202. A section of worm gear 2052 is coaxially fixedly mounted on the clamping ring 205. The worm 206 is rotatably mounted on the traction frame 202 and meshes with the worm gear 2052. The adjusting motor 207 is fixedly mounted on the traction frame 202, and its output end is coaxially fixedly connected with the worm 206.

[0047] Specifically, the traction cylinder 201 drives the traction frame 202 to move in the horizontal direction; the operator pushes the movable clamping block 204 so that the arc-shaped protrusion is located on the inner side of the clamping ring 205, that is, the extrusion block 203 where the movable clamping block 204 is located is selected (at this time, the limit block 2051 and the extrusion block 203 are arranged alternately); the adjustment motor 207 drives the worm 206 to rotate, and the worm 206 drives the clamping ring 205 to rotate through the worm gear 2052, and the limit block 2051 on the clamping ring 205 will rotate accordingly, and the limit block 2051 moves along the arc-shaped protrusion of the movable clamping block 204 and pushes the movable clamping block 204 to move radially inward along the circular ring of the traction frame 202, thereby driving the extrusion block 203 to move radially inward, and the extrusion block 203 squeezes the cable conduit; all the selected extrusion blocks 203 work together to fix the cable conduit, and by selecting different extrusion blocks 203, various pulling conditions in actual working conditions can be simulated.

[0048] like Figure 13-Figure 14 As shown, the fixing mechanism 3 includes an adjusting screw 1 301, a sliding frame 1 302, a fixed clamping plate 303, a movable clamping plate 304, a connecting bolt 305, a clamping hole slot 306, a clamping rod 307 and a fixing cylinder 308; the adjusting screw 1 301 is horizontally installed on the supporting frame 2 102; the sliding frame 1 302 is horizontally slidably installed on the supporting frame 2 102 and is threadedly connected to the adjusting screw 1 301; the main bodies of the fixed clamping plate 303 and the movable clamping plate 304 are both semicircular and can be assembled into a complete circle, one end of the fixed clamping plate 303 is fixedly installed on the sliding frame 1 302, and the same end of the movable clamping plate 304 is fixedly installed on the sliding frame 1 302. One end is rotatably mounted on the sliding frame 1 302 through a rotating shaft; a connecting bolt 305 is threadedly mounted on the other end of the movable clamping plate 304, and a thread matching the connecting bolt 305 is provided on the end of the fixed clamping plate 303; a clamping hole groove 306 is fixedly mounted on the frame 1, and a plurality of clamping holes are arranged horizontally on its upper edge; a clamping rod 307 is tilted and slidably mounted on the sliding frame 1 302, and the tail end of the clamping rod 307 intermittently extends into the clamping hole, and the clamping rod 307 is made of a metal material with high hardness; a fixed cylinder 308 is fixedly mounted on the sliding frame 1 302, and its telescopic end is fixedly connected to the clamping rod 307;

[0049] Specifically, the adjusting screw 301 drives the sliding frame 302 to move in the horizontal direction. After the sliding frame 302 moves to the desired position, the fixing cylinder 308 drives the clamping rod 307 to move, and the bottom end of the clamping rod 307 extends into the clamping hole in the clamping hole groove 306, so that the sliding frame 302 is fixed; when fixing the cable duct, the cable duct is placed on the fixed clamping plate 303, the movable clamping plate 304 is rotated so that the movable clamping plate 304 covers the cable duct, and the connecting bolt 305 is rotated to fix the movable clamping plate 304 on the fixed clamping plate 303, and the cable duct is fixed by the fixed clamping plate 303 and the movable clamping plate 304.

[0050] like Fig.13 and Figure 15-16 As shown, the side pressure mechanism 4 includes an adjusting screw 2 401, a sliding frame 2 402, a main mounting frame 403, a main extrusion plate 404, a secondary mounting frame 405, a secondary extrusion plate 406, a push plate 407, a main push cylinder 408 and a secondary push cylinder 409; the adjusting screw 2 401 is horizontally mounted on the support frame 2 102; the sliding frame 2 402 is horizontally slidably mounted on the support frame 2 102 and is threadedly connected to the adjusting screw 2 401 (the adjusting screw 1 301 in the figure only passes through the sliding frame 2 402 and is not connected to the sliding frame 2 402); the main mounting frame 403 is horizontally slidably mounted on the sliding frame 2 402, and the sliding direction of the main mounting frame 403 is consistent with the sliding direction of the sliding frame 2 402 The directions are perpendicular to each other; the main extrusion plate 404 is fixedly mounted on the innermost end of the main mounting frame 403, and is used to squeeze the cable conduit from the side; the auxiliary mounting frame 405 slides in the same direction and is elastically mounted on the main mounting frame 403 through a compression spring; there are two auxiliary extrusion plates 406 and they are respectively arranged on both sides of the main extrusion plate 404, and both are fixedly mounted on the auxiliary mounting frame 405; the main push cylinder 408 is horizontally fixedly mounted on the sliding frame 402, and its telescopic end is fixedly connected to the main mounting frame 403; the auxiliary push cylinder 409 is vertically fixedly mounted on the main mounting frame 403, and its telescopic end is fixedly connected to the push plate 407; the bottom end of the push plate 407 is provided with an inclined surface that is narrow at the bottom and wide at the top, which is used to push the auxiliary mounting frame 405 to move;

[0051] Specifically, the adjusting screw 401 drives the sliding frame 402 to move in the horizontal direction, so as to select the position of the side pressure; the main push cylinder 408 drives the main mounting frame 403 to move, and the main extrusion plate 404 moves with the main mounting frame 403 and squeezes the cable conduit; the auxiliary extrusion plate 406 drives the push plate 407 to move up and down, and when the push plate 407 moves downward, the inclined surface of the push plate 407 will gradually push the auxiliary mounting frame 405, the compression spring is compressed, and the auxiliary extrusion plate 406 moves with the auxiliary mounting frame 405 and squeezes the cable conduit, thereby expanding the pressure area, and when the push plate 107 moves upward, the push plate 407 is separated from the auxiliary mounting frame 405, and the auxiliary mounting frame 405 returns to its original position under the resetting action of the compression spring, and the auxiliary extrusion plate 406 is separated from the cable conduit, thereby reducing the pressure area.

[0052] like Figure 17-Figure 18As shown, the scratch simulation mechanism 5 includes an adjusting screw 3 501, a sliding frame 3 502, a rotating ring 503, a screw 504, a worm 2 505 and a rotating motor 506; the adjusting screw 3 501 is horizontally mounted on the supporting frame 3 103; the sliding frame 3 502 is horizontally slidably mounted on the supporting frame 3 103 and is threadedly connected to the adjusting screw 3 501, and the sliding frame 3 502 is located on the inner side of the supporting frame; the rotating ring 503 is rotatably mounted on the sliding frame 3 502, and a worm gear ring 5031 is coaxially fixedly mounted on the rotating ring 503; the worm 2 505 is rotatably mounted on the supporting frame 3 103 and meshes with the worm gear ring 5031; the rotating motor 506 is fixedly mounted on the supporting frame 3 103, and its output end is coaxially fixedly connected to the worm 2 505; there are eight screws 504, which are evenly distributed along the circumference on the rotating ring 503, and each screw 504 is threadedly mounted on the rotating ring 503;

[0053] Specifically, rotating the screw 504 causes the screw 504 to move inward, i.e., the screw 504 is selected, and the distance that the screw 504 moves inward determines the depth of the scratch; adjusting the lead screw 3 501 drives the sliding frame 3 502 to move in the horizontal direction, and the selected screw 504 moves in the horizontal direction accordingly and scratches the cable conduit; rotating the motor 506 drives the worm 2 505 to rotate, the worm 2 505 drives the worm gear ring 5031 to rotate, and the worm gear ring 5031 drives the rotating ring 503 to rotate, and the selected screw 504 rotates accordingly and scratches the cable conduit.

[0054] In this embodiment, the telescopic direction of the traction cylinder 201, the direction of the adjusting screw 1 301, the direction of the adjusting screw 2 401 and the direction of the adjusting screw 3 501 are parallel to each other, that is, the sliding directions of the traction frame 202, the sliding frame 1 302, the sliding frame 2 402 and the sliding frame 3 502 are parallel to each other; the traction cylinder 201 adopts a hydraulic cylinder, and the fixed cylinder 308, the main push cylinder 408 and the auxiliary push cylinder 409 all adopt servo electric cylinders; the adjusting motor 207 and the rotating motor 506 both adopt servo motors; the adjusting screw 1 301, the adjusting screw 2 401 and the adjusting screw 3 501 all adopt servo screws.

[0055] like Fig.19As shown, the control terminal 6 includes a main controller, a human-machine interactive display screen, an information transmission module, a storage module and a power module, and the main controller is electrically connected to the human-machine interactive display screen, the information transmission module, the storage module, the power module, the traction cylinder 201, the adjustment motor 207, the adjustment screw 1 301, the fixed cylinder 308, the adjustment screw 2 401, the main push cylinder 408, the auxiliary push cylinder 409, the adjustment screw 3 501, and the rotating motor 506; the main controller is used to control the operation of the entire tensile test device; the human-machine interactive display screen is used to control the opening and closing of each electrical component, and to set the operating distance value of the electrical component; the information transmission module is used for information transmission between the main controller and each electrical component; the power module is used to provide a stable power supply for the control terminal 6; and the storage module is used to store the operating information data of the entire tensile test device.

[0056] The working principle of this embodiment is as follows:

[0057] The present embodiment can simulate different actual situations, and pull the cable conduit under various actual situations to test the tensile strength of the cable conduit under different actual situations. The actual situations that can be simulated by the present embodiment include squeezing in different directions of the traction point, squeezing on the side of the tube body, and scratches on the tube body. Each situation can be tested separately or in combination. The following will explain the combined test of all simulated actual situations.

[0058] In the first step, the lead screw 1 301 is adjusted to drive the sliding frame 1 302 to move, and the lead screw 2 401 is adjusted to drive the sliding frame 2 402 to move, so that the sliding frame 1 302 and the sliding frame 2 402 are both moved to the end of the rack 1 away from the supporting frame; the operator passes the cable conduit through the ring of the traction frame 202, passes the cable conduit through the rotating ring 503 and places it on the supporting frame (and the tube body of the cable conduit is also placed on the fixed clamping plate 303); in order to ensure that the test results are true and reliable, the cable must be placed in the cable conduit;

[0059] In the second step, the operator selects an active block 204 and pushes the selected active block 204 so that the corresponding arc-shaped protrusion is located inside the snap ring 205; the adjusting motor 207 is started, the worm 206 rotates to drive the snap ring 205 to rotate, and the limit block 2051 on the snap ring 205 pushes the active block 204 to move radially inward, and the extrusion block 203 moves accordingly, and all the extrusion blocks 203 where the selected active blocks 204 are located jointly fix the cable conduit;

[0060] In the third step, the operator selects a screw 504 and rotates the selected screw 504 to move the screw 504 radially inward, and the tip of the screw 504 penetrates into the cable conduit; the adjusting screw 3 501 is started, the sliding frame 3 502 moves in the horizontal direction, the rotating motor 506 is started, the worm 2 505 drives the rotating ring 503 to rotate, the screw 504 moves and scratches the body of the cable conduit; after the scratches are made, the operator rotates the screw 504 in the opposite direction to make the screw 504 detach from the cable conduit, and then the adjusting screw 3 501 drives the sliding frame 3 502 to move to one end of the frame 1 close to the supporting frame;

[0061] Step 4: Start the adjusting screw 301, the sliding frame 302 moves, and the fixed clamping plate 303 moves to a suitable fixed position; after the sliding frame 302 stops moving, start the fixing cylinder 308, the clamping rod 307 moves and the bottom end extends into the clamping hole at that position; the operator closes the movable clamping plate 304, and turns the connecting bolt 305, and the connecting bolt 305 fixes the fixed clamping plate 303 and the movable clamping plate 304 together, and the cable conduit body is fixed;

[0062] Step 5: Start the adjusting screw 401, the sliding frame 402 moves, and the sliding frame 402 stops after moving to the side pressure position; start the main push cylinder 408 and the auxiliary push cylinder 409, the main extrusion plate 404 and the auxiliary extrusion plate 406 are pushed out, and the cable conduit body is pressurized on the side;

[0063] The sixth step is to start the traction cylinder 201, and the traction frame 202 stretches the cable conduit, gradually increasing the pulling force of the traction cylinder 201 until the cable conduit is broken, and the control terminal 6 records the pulling force of the traction cylinder 201 in real time throughout the whole process.

[0064] The above steps complete the tensile test of the MPP cable conduit.

Claims

1. A MPP cable conduit tensile test device, characterized in that: It includes a frame, and a traction force applying mechanism, a fixing mechanism, a side pressure applying mechanism and a scratch simulation mechanism arranged on the frame; The traction force mechanism comprises a traction frame slidably mounted on the frame, an extrusion block slidably and elastically mounted on the traction frame, a movable clamping block slidably mounted on the extrusion block, a clamping ring rotatably mounted on the traction frame, and a rotating assembly 1 for driving the clamping ring to rotate; a limit block corresponding to the movable clamping block and intermittently pushing the movable clamping block is fixedly provided on the clamping ring; The fixing mechanism comprises a sliding frame 1 slidably mounted on the frame, a fixing component 1 arranged on the sliding frame 1 for fixing the cable conduit body, and a fixing component 2 for fixing the sliding frame 1; the fixing component 2 comprises a clamping hole slot fixedly mounted on the frame, a clamping rod slidably mounted on the sliding frame 1, and a fixing cylinder fixedly mounted on the sliding frame 1 and having a telescopic end fixedly connected to the clamping rod; the rear end of the clamping rod can extend into the clamping hole of the clamping hole slot; The side pressure mechanism includes a sliding frame 2 slidably mounted on the frame, and a main extrusion plate slidably mounted on the sliding frame 2; the side pressure mechanism also includes a main mounting frame slidably mounted on the sliding frame 2 and fixedly connected to the main extrusion plate, a main pushing cylinder fixedly mounted on the sliding frame 2 and with a telescopic end fixedly connected to the main mounting frame, a secondary mounting frame slidably and elastically mounted on the main mounting frame, a secondary extrusion plate fixedly mounted on the secondary mounting frame, a secondary pushing cylinder fixedly mounted on the main mounting frame, and a pushing plate fixedly mounted on the telescopic end of the secondary pushing cylinder and intermittently pushing the secondary mounting frame to move; The scratch simulation mechanism comprises a sliding frame three slidably mounted on the frame, a rotating ring rotatably mounted on the sliding frame three, a screw threadedly mounted on the rotating ring, and a rotating assembly two for driving the rotating ring to rotate.

2. According to claim 1, a MPP cable conduit tensile test device is characterized in that: The rotating assembly 1 includes an adjusting motor fixedly mounted on the traction frame, a worm 1 rotatably mounted on the traction frame and coaxially fixedly connected to the output end of the adjusting motor, and a worm gear coaxially fixedly mounted on a clamping ring and meshing with the worm 1.

3. The MPP cable conduit tensile test device according to claim 1, characterized in that: The traction force applying mechanism also includes a traction cylinder which is fixedly mounted on the frame and has a telescopic end fixedly connected to the traction frame.

4. The MPP cable conduit tensile test device according to claim 1, characterized in that: The fixing assembly 1 comprises a fixing clamping plate fixedly mounted on the sliding frame 1, a movable clamping plate rotatably mounted on the sliding frame 1, and a connecting bolt threadedly mounted on the movable clamping plate; the fixing clamping plate is provided with threads matching with the connecting bolts.

5. The MPP cable conduit tensile test device according to claim 1, characterized in that: The fixing mechanism also includes an adjusting screw 1 which is mounted on the frame and threadedly connected to a sliding frame 1.

6. The MPP cable conduit tensile test device according to claim 1, characterized in that: The side pressure mechanism also includes an adjusting screw 2 which is installed on the frame and is threadedly connected to the sliding frame 2.

7. The MPP cable conduit tensile test device according to claim 1, characterized in that: The rotating assembly 2 includes a rotating motor fixedly mounted on a sliding frame 3, a worm 2 rotatably mounted on the sliding frame 3 and coaxially fixedly connected to the output end of the rotating motor, and a worm gear ring coaxially fixedly mounted on a rotating ring and meshing with the worm 2.

8. The MPP cable conduit tensile test device according to claim 1, characterized in that: The scratch simulation mechanism also includes an adjusting screw three which is installed on the frame and is threadedly connected to the sliding frame three.

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