A fireproof cable core tensile test device

Abstract

The present invention relates to the field of cable detection technology, and in particular to a fireproof cable core tensile testing device. The present invention provides a fireproof cable core tensile testing device that can automatically supplement and place cables, thereby improving detection efficiency and safety. A fireproof cable core tensile testing device comprises a mounting seat, a drive motor, a transmission screw and a first sliding member, etc. A drive motor is provided on the right side of the mounting seat, a transmission screw is provided on the output shaft of the drive motor, the transmission screw is rotatably connected to the mounting seat, and a first sliding member is slidably provided on the mounting seat. The present invention clamps and fixes the cable to be tested through the cooperation between the limiter and the first spring. When the cable in the installation frame needs to be tested, the movement of the installation frame is controlled by the telescopic end of the hydraulic cylinder, and the limiter is pulled to quickly release the cable, thereby improving the replacement efficiency during cable detection and avoiding direct contact and manual placement of the cable by the tester, thereby improving the safety of the test.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, in particular to a fireproof cable core tension test device. Background Art

[0002] Cable tension test is a test method used to test the tensile performance of cables. During the test, the cable end is fixed on the testing machine, and the testing machine is used to apply tension to measure the tensile force that the cable can withstand, so as to determine whether the cable meets the design and use requirements and ensure its safe and reliable operation.

[0003] Patent publication number CN1 15541392A describes a fireproof cable core tensile test device that can stop the cable core from moving after it breaks, ensuring accurate test results, and has a simple structure and a low failure rate. The present invention provides such a fireproof cable core tensile test device, comprising a workbench, a hydraulic cylinder, and a tensile gauge. The hydraulic cylinder is mounted on one side of the top of the workbench, and the tensile gauge is connected to the piston rod of the hydraulic cylinder. The device can supply a circuit through the cable core, and when the cable core breaks, the circuit connection can be stopped, thereby stopping the operation of the electromagnet and the hydraulic cylinder, preventing the fixture from continuing to drive the cable core to move, affecting the detection of the cable core's stretchable length, and ensuring the judgment of the cable core's tensile value. However, after completing a tensile test, the device requires the tester to manually add the next cable to be tested, resulting in reduced test efficiency. At the same time, the tester is prone to injury due to operational errors when directly touching and placing the cable, resulting in low safety.

[0004] Therefore, in order to solve the above problems, a fire-proof cable core tensile test device is now developed which can automatically carry out cable supplementary placement and improve detection efficiency and safety. Summary of the Invention

[0005] In order to overcome the shortcomings of existing devices that require testers to manually add the next cable to be tested after completing one tensile test, resulting in reduced test efficiency and easy injury due to operational errors when testers directly touch and place the cables, resulting in low safety, the present invention provides a fire-resistant cable core tensile testing device that can automatically perform cable supplementary placement, thereby improving detection efficiency and safety.

[0006] The technical implementation plan of the present invention is: a fire-proof cable core tensile testing device, including a mounting seat, a driving motor, a transmission screw, a first sliding member, a tension meter, a clamping assembly and a discharge mechanism. A driving motor is provided on the right side of the mounting seat, and a transmission screw is provided on the output shaft of the driving motor. The transmission screw is rotatably connected to the mounting seat, and a first sliding member is slidably provided on the mounting seat. The first sliding member is threadedly connected to the transmission screw. A tension meter is provided on the left side of the first sliding member, and a clamping assembly is provided on the left side of the tension meter. A clamping assembly is also provided on the upper left side of the mounting seat. A discharge mechanism is provided on the mounting seat, and the discharge mechanism includes a hydraulic cylinder, a mounting frame, a limiter and a first spring. Hydraulic cylinders are provided on the front and rear sides of the left side of the mounting seat, and a mounting frame is provided between the telescopic ends of the hydraulic cylinder. The front and rear sides of the left and right parts of the mounting frame are slidably provided with upper and lower symmetrical limiters, and a first spring is provided between the limiter and the mounting frame.

[0007] Optionally, a detection mechanism is also included, which includes a first protective frame, a display component, an identification component and a connecting piece. The first protective frame is arranged between the front and rear sides of the right part of the mounting seat, the display component is arranged on the upper front side of the first protective frame, and the identification component is slidingly arranged on the top of the first protective frame. A data transmission line is connected between the identification component and the display component, and a connecting piece is arranged between the identification component and the dynamometer.

[0008] Optionally, a guide mechanism is also included, which includes a first fixing member, a guide member and a first lifting frame. The first fixing member is provided at a position on the front left side of the mounting seat near the front hydraulic cylinder and at a position on the rear left side of the mounting seat near the rear hydraulic cylinder. The guide member is slidably provided on the first fixing member, and the first lifting frame is provided at positions corresponding to adjacent guide members on the front and rear sides of the mounting frame, and the first lifting frame is slidably connected to the adjacent guide members.

[0009] Optionally, a protective mechanism is also included, which includes a fixed rod, a second spring, a second lifting frame, a second protective frame, a second sliding member, a third spring and a limit frame. Two fixed rods symmetrically arranged in front and back are provided on the upper left side of the mounting seat, and the second lifting frame is slidingly arranged between the fixed rods. The right side of the second lifting frame is supported and limited by the mounting frame, and two second springs symmetrically arranged in front and back are provided between the second lifting frame and the mounting seat. A second protective frame is rotatably provided on the upper left side of the mounting seat, and a limit frame symmetrically arranged in front and back is provided on the upper left side of the mounting seat. Second sliding members are slidably arranged on the limit frames, and the second sliding members are slidably connected to the second lifting frames. Third springs are provided between the second sliding members and adjacent limit frames.

[0010] Optionally, a rotating mechanism is also included, which includes a flexible rack frame, a guide frame and a gear. Flexible rack frames are provided on the front and rear sides of the left and right parts of the mounting frame, and guide frames are provided on the front and rear sides of the left part and the front and rear sides of the middle position of the mounting seat. The flexible rack frame is slidably connected to the adjacent guide frame, and gears that mesh with the adjacent flexible rack frames are provided on the front and rear sides of the clamping assembly.

[0011] Optionally, a supporting mechanism is also included, which includes a second fixing member, a supporting member and a torsion spring. A second fixing member is arranged at the lower middle part of the installation frame, and a supporting member is rotatably arranged between the left and right adjacent second fixing members. Two left-right symmetrical torsion springs are arranged between the supporting member and the adjacent second fixing members.

[0012] Optionally, the clamping assembly includes a mounting frame, a bidirectional screw and a clamping piece. The dynamometer and the upper left side of the mounting seat are both provided with a mounting frame. The mounting frame on the right is slidably connected to the mounting seat. The mounting frame is rotatably provided with a bidirectional screw. The mounting frame is slidably provided with two front-to-back symmetrical clamping pieces, and the clamping pieces are threadedly connected to the adjacent bidirectional screws.

[0013] Optionally, the inner sides of the limiting members are all cambered structures.

[0014] Optionally, the inner sides of the guide members are all C-shaped structures.

[0015] Optionally, the left side of the second sliding member is a sloped structure.

[0016] The present invention has the following advantages:

[0017] 1. The present invention clamps and fixes the cable to be tested through the cooperation between the limiter and the first spring. When the cable in the installation frame needs to be tested, the movement of the installation frame is controlled by the telescopic end of the hydraulic cylinder, and the limiter is pulled to quickly release the cable, thereby improving the replacement efficiency during cable testing and avoiding direct contact and manual placement of the cable by the tester, thereby improving the safety of the test.

[0018] 2. The present invention uses an identification component to visually read the dynamometer, thereby converting the visual signal into a digital signal through a data transmission line, and finally intuitively displaying the value displayed on the dynamometer through a display component, making it easy for testers to quickly read the tension value and improving the convenience of testing.

[0019] 3. The present invention drives the movement of the first lifting frame by the movement of the installation frame, so that the guide members can be spread out away from each other during the placement of the cable. After the cable is placed, the guide members can be reset and limit the cable to guide it, thereby improving the stability of the cable tension test and ensuring the accuracy of the test value.

[0020] 4. In the present invention, when the installation frame moves downward to place the cable, the second lifting frame drives the second sliding member to push the second protective frame to flip open, so that the cable can be placed normally. After the cable is placed, the left end of the cable is shielded and protected by the second protective frame to prevent the tester from accidentally touching the cable end during operation, causing the risk of leakage or clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0023] Figure 3 It is a partial three-dimensional structural schematic diagram of the discharge mechanism of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present invention.

[0025] Figure 5 It is a partial three-dimensional structural schematic diagram of the detection mechanism of the present invention.

[0026] Figure 6 It is a partial three-dimensional structural schematic diagram of the guide mechanism of the present invention.

[0027] Figure 7 It is a partial three-dimensional structural diagram of the protection mechanism of the present invention.

[0028] Figure 8 It is a schematic diagram of a first partial three-dimensional structure of the rotating mechanism of the present invention.

[0029] Figure 9 This is a schematic diagram of a second partial three-dimensional structure of the rotating mechanism of the present invention.

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the support mechanism of the present invention.

[0031] Figure 11 It is a partial structural diagram of the support mechanism of the present invention.

[0032] The meanings of the reference numerals in the figure are: 1: mounting base, 2: driving motor, 3: transmission screw, 4: first sliding member, 5: dynamometer, 6: clamping assembly, 7: discharge mechanism, 71: hydraulic cylinder, 72: mounting frame, 73: limiting member, 74: first spring, 8: detection mechanism, 81: first protective frame, 82: display assembly, 83: identification assembly, 84: connecting member, 9: guiding mechanism, 91: first fixing member, 92: guiding member, 93: first lifting frame, 10: protective mechanism, 101: fixing rod, 102: second spring, 103: second lifting frame, 104: second protective frame, 105: second sliding member, 106: third spring, 107: limiting frame, 11: rotating mechanism, 111: flexible rack frame, 112: guide frame, 113: gear, 12: supporting mechanism, 121: second fixing member, 122: supporting member, 123: torsion spring. DETAILED DESCRIPTION

[0033] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] A fireproof cable core tensile test device, such as Figure 1 and Figure 2 As shown, it includes a mounting base 1, a drive motor 2, a transmission screw 3, a first sliding member 4, a dynamometer 5, a clamping assembly 6 and a discharge mechanism 7. The right side of the mounting base 1 is connected to the drive motor 2 by bolts, and the output shaft of the drive motor 2 is set to the left. The output shaft of the drive motor 2 is connected to the transmission screw 3, and the transmission screw 3 is rotatably connected to the mounting base 1. The first sliding member 4 is slidably connected to the mounting base 1, and the first sliding member 4 is threadedly connected to the transmission screw 3. The left side of the first sliding member 4 is connected to a dynamometer 5 for measuring the size of the tension. The dynamometer 5 is on the left. The side is connected with a clamping assembly 6 for clamping the cable end, and the clamping assembly 6 is also connected to the upper left side of the mounting seat 1. The clamping assembly 6 includes a mounting frame, a bidirectional screw and a clamping piece. The dynamometer 5 and the upper left side of the mounting seat 1 are connected with a mounting frame, and the mounting frame on the right is slidably connected to the mounting seat 1. The mounting frame is rotatably connected with a bidirectional screw, and the mounting frame is slidably connected with two front-to-back symmetrical clamping pieces, and the clamping pieces are threadedly connected to the adjacent bidirectional screws. The mounting seat 1 is provided with a discharge mechanism 7 for conveniently placing cables for testing.

[0035] It should be noted that after the production of the fireproof cable is completed, the tensile strength of the cable needs to be tested. At this time, this device can be used to assist the tester in the operation. First, the cable to be tested is clamped and fixed by the clamping assembly 6, and the cable to be tested later is placed in the discharge mechanism 7. As the clamping assembly 6 completes the clamping of the cable, the drive motor 2 will be powered on and start working. The output shaft of the drive motor 2 drives the transmission screw 3 to start rotating, which will cause the first sliding member 4 to drive the dynamometer 5 to slide to the right, and then the dynamometer 5 drives the clamping assembly 6 on the right to slide to the right. At this time, since the clamping assembly 6 on the left is fixedly installed, the right clamping assembly 6 can be driven by the dynamometer 5 to perform a tensile test on the cable. When the cable is broken, the energy of the drive motor 2 is disconnected, causing the drive motor 2 to stop running. Then the value on the dynamometer 5 is read to obtain the maximum tensile force that the cable can withstand. After the test is completed, the clamping assembly 6 is controlled to loosen the clamping of the cable and take out the broken cable. Then the discharge mechanism 7 is controlled to place the cable that needs to be tested later between the clamping assemblies 6, and then the cable is clamped by the clamping assembly 6 to repeat the tensile test.

[0036] like Figure 1 and Figure 3 As shown, the discharge mechanism 7 includes a hydraulic cylinder 71, a mounting frame 72, a limit piece 73 and a first spring 74. The front and rear sides of the left part of the mounting seat 1 are connected to the hydraulic cylinder 71 by bolts, and the mounting frame 72 is connected between the telescopic ends of the hydraulic cylinder 71. The front and rear sides of the left and right parts of the mounting frame 72 are slidably connected with upper and lower symmetrical limit pieces 73 for clamping and fixing the detection cable. The inner sides of the limit pieces 73 are all arc-shaped structures, which can avoid damage to the cable when clamping. The first springs 74 are connected between the limit pieces 73 and the mounting frame 72, and the first springs 74 are all wound around the adjacent limit pieces 73.

[0037] When the clamping member 73 is in the closed position, the first spring 74 is in the closed position, and the first spring 74 is in the closed position, so that the first spring 74 is in the closed position and the second spring 74 is in the closed position, so that the first spring 74 is in the closed position and the second spring 74 is in the closed position. When the clamping member 73 is in the closed position, the first spring 74 is in the closed position, and the second spring 74 is in the closed position, so that the first spring 74 is in the closed position ...

[0038] To sum up, the cable to be tested is clamped and fixed through the cooperation between the limit member 73 and the first spring 74. When the cable in the installation frame 72 needs to be tested, the movement of the installation frame 72 is controlled by the telescopic end of the hydraulic cylinder 71, and the limit member 73 is pulled to quickly release the cable, thereby improving the replacement efficiency during cable testing. At the same time, it also avoids direct contact and manual placement of the cable by the tester, thereby improving the safety of the test.

[0039] like Figure 1 、 Figure 4 and Figure 5 As shown, a detection mechanism 8 is also included, and the detection mechanism 8 includes a first protective frame 81, a display component 82, an identification component 83 and a connector 84. The first protective frame 81 is connected between the front and rear sides of the right side of the mounting base 1 by bolts, and the upper front side of the first protective frame 81 is connected to the display component 82 for displaying the picture, and the top of the first protective frame 81 is slidably connected to the identification component 83 for visually reading the dynamometer 5, a data transmission line is connected between the identification component 83 and the display component 82, and a connector 84 is connected between the identification component 83 and the dynamometer 5.

[0040] It should be noted that, in order to facilitate the test personnel to read the value of the dynamometer 5, the dynamometer 5 is visually read through the identification component 83, and then the visual signal is transmitted to the display component 82 through the data transmission line. Finally, the value of the dynamometer 5 is displayed through the display component 82, which is convenient for the test personnel to read quickly. It should be noted that as the dynamometer 5 slides, the dynamometer 5 will drive the connecting member 84 to make the identification component 83 slide along, thereby ensuring that the identification component 83 is always located above the dynamometer 5. In summary, the dynamometer 5 is visually read through the identification component 83, and the visual signal is converted into a digital signal through the data transmission line. Finally, the value displayed on the dynamometer 5 is intuitively displayed through the display component 82, which is convenient for the test personnel to quickly read the tension value and improve the convenience of the test.

[0041] like Figure 1 and Figure 6 As shown, it also includes a guide mechanism 9, which includes a first fixing member 91, a guide member 92 and a first lifting frame 93. The first fixing member 91 is connected to the position of the front hydraulic cylinder 71 on the left front side of the mounting seat 1 and the position of the rear hydraulic cylinder 71 on the left rear side of the mounting seat 1 by bolts. The first fixing member 91 is slidably connected to a guide member 92 for limiting and guiding the detected cable. The inner side of the guide member 92 is a C-shaped structure, which is convenient for fitting the cable for limiting and guiding. The positions of the adjacent guide members 92 on the front and rear sides of the mounting frame 72 are connected to the first lifting frames 93 by bolts, and the first lifting frames 93 are slidably connected to the adjacent guide members 92.

[0042] When the cable is tensioned, the guide frame 72 is moved upward to reset, and the first lifting frame 93 pushes the adjacent guide members 92 to slide and reset to the side close to the mounting seat 1, and limits and guides the middle position of the cable, so that the cable can be in the same horizontal plane as the mounting seat 1 during the testing process. In summary, the movement of the mounting frame 72 drives the first lifting frame 93 to move, so that the guide members 92 can move away from each other and expand during the cable placement process. After the cable is placed, the guide members 92 can be reset and limit and guide the cable, thereby improving the stability of the cable tension test and ensuring the accuracy of the test value.

[0043] like Figure 1 and Figure 7 As shown, it also includes a protective mechanism 10, which includes a fixed rod 101, a second spring 102, a second lifting frame 103, a second protective frame 104, a second sliding member 105, a third spring 106 and a limiting frame 107. The upper left side of the mounting seat 1 is connected to two front-to-back symmetrical fixed rods 101, and the second lifting frame 103 is slidably connected between the fixed rods 101. The right side of the second lifting frame 103 is supported and limited by the mounting frame 72. Two second springs 102 are connected to the mounting seat 1, and the second springs 102 are wound around the corresponding fixed rods 101. The left side of the mounting seat 1 The upper side of the second protective frame 104 is rotatably connected to cover the left clamping assembly 6, and the upper side of the left part of the mounting seat 1 is connected to the front and rear symmetrical limit frames 107 by bolts. The limit frames 107 are slidably connected to the second sliding members 105 that can push the second protective frame 104. The left side of the second sliding members 105 are all inclined structures, which are convenient for pushing and flipping the second protective frame 104. The second sliding members 105 are slidably connected to the second lifting frame 103, and the second sliding members 105 are connected to the adjacent limit frames 107 with third springs 106, and the third springs 106 are all wound around the corresponding limit frames 107.

[0044] When the second lifting frame 103 is in the state of being supported and limited by the second spring 102, the second lifting frame 103 is in the state of being stretched. Under the action of the second spring 102, the second lifting frame 103 slides downward along the fixing rod 101, so that the second sliding member 105 slides to the left along the adjacent limiting frame 107 under the push of the second lifting frame 103. In the process of sliding the second sliding member 105 to the left, it pushes the second protective frame 104 through the inclined surface on the left. At the same time, the third spring 106 is stretched. After the second protective frame 104 is pushed, the second protective frame 104 will flip to the left and open, so that the clamping assembly 6 on the left is no longer blocked and protected, and the cable can be placed normally. After the placement is completed, as the mounting frame 72 moves upward to reset, the left side of the mounting frame 72 will push the second lifting frame 103. The right side of the lowering frame 103 causes the second lifting frame 103 to slide upward and reset, thereby driving the second sliding member 105 to slide and reset to the right, the second spring 102 returns to the stressed and stretched state, and the third spring 106 returns to its normal state. At the same time, the second protective frame 104 is no longer pushed by the second sliding member 105, and flips to the right and resets under the action of its own gravity, and shields and protects the clamping assembly 6 on the left to prevent the tester from accidentally touching the cable end during operation, resulting in leakage or the risk of being clamped. In summary, when the installation frame 72 moves downward to place the cable, the second lifting frame 103 drives the second sliding member 105 to push the second protective frame 104 to flip open, so that the cable can be placed normally. After the cable is placed, the left end of the cable is shielded and protected by the second protective frame 104 to prevent the tester from accidentally touching the cable end during operation, resulting in leakage or the risk of being clamped.

[0045] like Figure 1 、 Figure 8 and Figure 9 As shown, it also includes a rotating mechanism 11, which includes a flexible rack frame 111, a guide frame 112 and a gear 113. The front and rear sides of the left and right parts of the mounting frame 72 are connected with flexible rack frames 111, and the front and rear sides of the left part and the front and rear sides of the middle position of the mounting seat 1 are connected with guide frames 112 for limiting adjacent flexible rack frames 111. The flexible rack frame 111 is slidably connected to the adjacent guide frame 112, and the front and rear sides of the clamping assembly 6 are connected with gears 113 that mesh with the adjacent flexible rack frames 111.

[0046] It should be noted that as the mounting frame 72 moves downward, the flexible rack frame 111 will be driven to slide along the adjacent guide frame 112, and the corresponding gear 113 will be driven to rotate during the sliding process, so that the clamping assembly 6 is no longer in a clamping state. When the cable is placed, as the flexible rack frame 111 is reset, the gear 113 will be driven to rotate in the opposite direction, so that the clamping assembly 6 clamps and fixes the cable, thereby improving the convenience of the cable clamping operation and improving the cable detection efficiency.

[0047] like Figure 1 、 Figure 3 、 Figure 10 and Figure 11 As shown, it also includes a support mechanism 12, which includes a second fixing member 121, a support member 122 and a torsion spring 123. The second fixing member 121 is connected to the lower part of the middle position of the installation frame 72, and the support members 122 for supporting the middle position of the cable are rotatably connected between the left and right adjacent second fixing members 121. Two left-right symmetrical torsion springs 123 are connected between the support member 122 and the adjacent second fixing member 121, and the torsion springs 123 are both wound around the adjacent support members 122.

[0048] It should be noted that when the cable is placed in the installation frame 72, the middle position of the cable is supported by the support member 122 to prevent the middle position of the cable from falling. After the cable is placed, as the two ends of the cable are clamped and fixed, when the installation frame 72 moves upward and resets, the support members 122 will be pushed by the cable to flip over, so that the torsion springs 123 are deformed under the force. When the support members 122 no longer contact the cable, under the action of the torsion springs 123, the support members 122 will flip over and reset.

[0049] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fireproof cable core tensile test device, comprising a mounting seat (1), a drive motor (2), a transmission screw (3), a first sliding member (4), a dynamometer (5), a clamping assembly (6) and a discharge mechanism (7), wherein the drive motor (2) is provided on the right side of the mounting seat (1), a transmission screw (3) is provided on the output shaft of the drive motor (2), the transmission screw (3) is rotatably connected to the mounting seat (1), a first sliding member (4) is slidably provided on the mounting seat (1), the first sliding member (4) is threadedly connected to the transmission screw (3), a dynamometer (5) is provided on the left side of the first sliding member (4), a clamping assembly (6) is provided on the left side of the dynamometer (5), a clamping assembly (6) is also provided on the upper left side of the mounting seat (1), and a discharge mechanism (7) is provided on the mounting seat (1), which is characterized in that: The discharge mechanism (7) includes a hydraulic cylinder (71), a mounting frame (72), a limiter (73) and a first spring (74). The hydraulic cylinder (71) is provided on both the front and rear sides of the left portion of the mounting seat (1). The mounting frame (72) is provided between the telescopic ends of the hydraulic cylinder (71). The front and rear sides of the left and right portions of the mounting frame (72) are both slidably provided with limiters (73) symmetrical in upper and lower directions. The first spring (74) is provided between the limiter (73) and the mounting frame (72). The protective mechanism (10) includes a fixed rod (101), a second spring (102), a second lifting frame (103), a second protective frame (104), a second sliding member (105), a third spring (106) and a limiting frame (107). Two fixed rods (101) symmetrically arranged in front and back are arranged on the upper left side of the mounting seat (1). A second lifting frame (103) is slidingly arranged between the fixed rods (101). The right side of the second lifting frame (103) is supported and limited by the mounting frame (72). Two second springs (102) are provided between the frame (103) and the mounting seat (1), a second protective frame (104) is rotatably provided on the upper left side of the mounting seat (1), a limiting frame (107) is provided on the upper left side of the mounting seat (1), and a second sliding member (105) is slidably provided on each limiting frame (107), each second sliding member (105) is slidably connected to the second lifting frame (103), and a third spring (106) is provided between each second sliding member (105) and an adjacent limiting frame (107); The left side of the second sliding member (105) is a sloped structure, which facilitates pushing and flipping the second protective frame (104); The second lifting frame (103) drives the second sliding member (105) to push the second protective frame (104) to flip leftward and open.

2. A fireproof cable core tensile testing device according to claim 1, characterized in that: The apparatus further comprises a detection mechanism (8), wherein the detection mechanism (8) comprises a first protective frame (81), a display component (82), an identification component (83) and a connecting member (84); the first protective frame (81) is provided between the front and rear sides of the right side of the mounting seat (1); the display component (82) is provided on the upper front side of the first protective frame (81); the identification component (83) is provided on the top of the first protective frame (81) in a sliding manner; a data transmission line is connected between the identification component (83) and the display component (82); and a connecting member (84) is provided between the identification component (83) and the dynamometer (5).

3. A fireproof cable core tensile testing device according to claim 2, characterized in that: Also includes A guide mechanism (9) is provided, the guide mechanism (9) including a first fixing member (91), a guide member (92) and a first lifting frame (93), the first fixing member (91) being provided at a position on the front side of the left portion of the mounting seat (1) close to the front hydraulic cylinder (71) and at a position on the rear side of the left portion of the mounting seat (1) close to the rear hydraulic cylinder (71), the first fixing member (91) being provided with a guide member (92) in a sliding manner, the first lifting frame (93) being provided at positions on the front and rear sides of the mounting frame (72) corresponding to adjacent guide members (92), and the first lifting frame (93) being slidably connected to adjacent guide members (92).

4. A fireproof cable core tensile testing device according to claim 1, characterized in that: The invention also includes a rotating mechanism (11), which includes a flexible rack frame (111), a guide frame (112) and a gear (113). The flexible rack frames (111) are provided on the front and rear sides of the left and right parts of the mounting frame (72). The guide frames (112) are provided on the front and rear sides of the left part and the front and rear sides of the middle position of the mounting seat (1). The flexible rack frame (111) is slidably connected to the adjacent guide frame (112). The front and rear sides of the clamping assembly (6) are provided with gears (113) that mesh with the adjacent flexible rack frames (111).

5. A fireproof cable core tensile testing device according to claim 4, characterized in that: The mounting frame (72) further comprises a support mechanism (12), the support mechanism (12) comprising a second fixing member (121), a support member (122) and a torsion spring (123). The second fixing member (121) is provided at the lower middle portion of the mounting frame (72), a support member (122) is rotatably provided between the left and right adjacent second fixing members (121), and two torsion springs (123) are symmetrically provided between the support member (122) and the adjacent second fixing member (121).

6. A fireproof cable core tensile testing device according to claim 1, characterized in that: The clamping assembly (6) includes a mounting frame, a bidirectional screw and a clamping piece. The dynamometer (5) and the mounting seat (1) are both provided with a mounting frame on the upper left side. The mounting frame on the right side is slidably connected to the mounting seat (1). The mounting frame is rotatably provided with a bidirectional screw. The mounting frame is slidably provided with two front-to-back symmetrical clamping pieces. The clamping pieces are both threadedly connected to the adjacent bidirectional screws.

7. A fireproof cable core tensile testing device according to claim 1, characterized in that: The inner sides of the limiting members (73) are all cambered structures.

8. A fireproof cable core tensile testing device according to claim 3, characterized in that: The inner sides of the guide members (92) are all C-shaped structures.

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