A tensile strength testing machine for composite polymer cable testing

Abstract

The present invention relates to the technical field of composite polymer cable testing, and discloses a tensile strength testing machine for composite polymer cable testing, comprising a testing platform, and further comprising: an operating box fixedly connected to the bottom of the testing platform; a bottom plate fixedly connected to the bottom of the operating box; two boxes fixedly connected to both sides of the top of the testing platform; a pushing mechanism arranged on the testing platform for pulling the composite polymer cable; a discharging mechanism arranged above the testing platform for pushing the composite polymer cable out after testing; a sliding assembly arranged on the discharging mechanism for limiting the composite polymer cable. The present invention can synchronously push the two ends of the composite polymer cable fixed in the two movable blocks to move through the pushing mechanism to achieve a synchronous pushing effect, so as to realize the tensile strength test of the composite polymer cable.

Description

Technical Field

[0001] The invention relates to the technical field of composite polymer cable testing, in particular to a tensile strength testing machine for composite polymer cable testing. Background Art

[0002] Composite polymer cable is a rope made of multiple polymer materials. It combines the advantages of different materials to meet specific application requirements. Composite polymer cable is usually woven from high-strength polymer fibers, such as ultra-high molecular weight polyethylene (UHMWPE) fiber, aramid, polyester fiber (PET), etc.

[0003] For example, the announcement number CN 209485859 U discloses a device for measuring the tensile strength of a mooring cable for a dock, comprising a base, a fixed seat fixedly connected to one side of the base, a crank provided above the fixed seat, the end of the crank penetrating the fixed seat and rotatably connected to the fixed seat, a driving gear fixed to the end of the crank, a rotating shaft rotatably connected to the base, a take-up drum and a driven gear fixedly connected above the rotating shaft, and a cable provided on the take-up drum. One side of the cable is wound around the take-up drum, and the other end is placed inside a cavity. The fixing bolt is fixed horizontally so that the cable is not easily detached during tension testing. The first and second pressure plates allow the cable and wire rope to be tightened at the same time. By shaking the crank, the driving gear drives the driven gear to rotate, causing the take-up drum to rotate as well, tightening the cable, and the slider moves inside the slide slot. At the same time, the spring dynamometer is stretched to perform tension testing.

[0004] However, when the above device is testing the rope, by pulling the rope to rotate on the take-up drum, the rope will shrink during the rotation process and produce a change in deformation. Therefore, a tensile strength testing machine for composite polymer cable testing is proposed to solve the above problem. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a tensile strength testing machine for testing composite polymer cables in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a tensile strength testing machine for testing composite polymer cables, including a testing platform and:

[0007] An operating box, fixedly connected to the bottom of the testing platform;

[0008] A bottom plate, fixedly connected to the bottom of the operation box;

[0009] Two boxes are fixedly connected to both sides of the top of the testing platform;

[0010] a pushing mechanism, disposed on the testing platform and used to pull the composite polymer cable;

[0011] A discharging mechanism is provided above the testing platform and is used to push the tested composite polymer cable out;

[0012] A sliding assembly is provided on the discharging mechanism and is used to limit the position of the composite polymer cable;

[0013] Wherein, the pushing mechanism includes:

[0014] An electric push rod is fixedly connected to the inner wall of the operation box, and an output end of the electric push rod movably passes through the operation box and is connected to a push plate;

[0015] The two push rods are movably connected to the box body, and the outer sides of the push rods are fixedly connected to the push plate;

[0016] A movable block is hinged on a side of the two push rods away from the push plate;

[0017] A plurality of sliding rods 1 are fixedly connected to one side of the push rod, and the other side of the sliding rod 1 is slidably connected to the inner wall of the box body;

[0018] The interior of the movable block is hollow, and a clamping mechanism is provided inside the movable block for clamping and fixing the composite polymer cable.

[0019] Preferably, the clamping mechanism includes:

[0020] Two clamping blocks are arranged on the inner wall of the movable block;

[0021] A second sliding rod is fixedly connected to the inner wall of the movable block, and the clamping block is slidably connected to the outer wall of the second sliding rod;

[0022] Multiple springs are arranged on the outer wall of the sliding rod 2 and located on the outside of the two clamping blocks, and are used to push the two clamping blocks closer to each other to clamp the composite polymer cable, and the two ends of the composite polymer cable are respectively fixedly connected with fixing rings to prevent the fixing rings and the composite polymer cable from moving.

[0023] Preferably, the clamping mechanism further comprises:

[0024] A top block, fixedly connected to the top of the inner wall of the box;

[0025] A push block is movably connected to the inner wall of the top block, and a second spring is provided on the inner wall thereof to push the push block downward;

[0026] Two limiting rods are connected to the push block via a push rod, and the limiting rods are movably connected to the top block to limit the push block from separating from the top block;

[0027] The bottom of the push rod is in contact with the two push rods and the upper part of the movable block.

[0028] Preferably, the clamping mechanism further comprises:

[0029] a wedge-shaped block fixedly connected to the clamping block;

[0030] A wedge-shaped fixing block is fixedly connected to the inner wall of the box and is located between the two push rods;

[0031] Two wedge-shaped push rods are slidably connected to the inclined surface of the wedge-shaped fixing block;

[0032] a telescopic spring connected to the inner sides of the two wedge-shaped push rods, for pushing the two wedge-shaped push rods away from each other, with the outer walls of the wedge-shaped push rods fitting against the inner inclined surfaces of the wedge blocks;

[0033] A fixed rod is fixedly connected to one side of the inner wall of the movable block, and a push rod is slidably connected to the outer wall of the fixed rod, which is used to fit between the composite polymer cable and one end of the fixed ring to push the fixed ring out of the limit of the clamping block;

[0034] Spring six is ​​sleeved on the outer wall of the fixed rod and fixedly connected to the pushing rod and the inner wall of the movable block to push the pushing rod to slide on the fixed rod toward the side of the fixed ring.

[0035] Preferably, the discharging mechanism includes:

[0036] A discharge plate is slidably connected above the inspection platform;

[0037] Two discharge arc blocks are symmetrically and fixedly connected to the back of the discharge plate, and cooperate with the discharge plate to push the tested composite polymer cable backward to discharge;

[0038] The slide plate is fixedly connected to the discharge plate and the discharge arc block below, and slides above the detection table through two connecting blocks connected at the bottom thereof.

[0039] Preferably, the discharging mechanism further includes:

[0040] A U-shaped push block, slidably connected to the inner wall of the operation box;

[0041] The round rod is fixedly connected to the inner wall of the operating box and movably connected to the U-shaped push block;

[0042] Spring three is sleeved on the outer wall of the round rod and pushes the U-shaped push block to move backward;

[0043] The two shift rods are movably connected to the operating box respectively. The shift rod is fixedly connected to the inner side of the push plate, and the other side is movably plugged into the U-shaped push block.

[0044] Preferably, the sliding assembly includes:

[0045] A plurality of fixing blocks, two in a group and symmetrically fixedly connected to the inner side of the arc of the discharge plate and the discharge arc block;

[0046] Two slide rails are fixedly connected to each set of fixed blocks;

[0047] The two clamping blocks are connected to the outer wall of the composite polymer cable through bolts, and the upper and lower sides of the two clamping blocks slide on the slide rails respectively.

[0048] Preferably, the sliding assembly further comprises:

[0049] Sliding rod three, fixedly connected to the inner side of each set of fixed blocks;

[0050] A stopper is slidably connected to the outer wall of the slide rod 3, and a spring 4 is provided on the outer wall of the slide rod 3 for pushing the stopper away from the movable block;

[0051] Two rectangular holes are respectively opened on the slide rail, and the stop block is movably connected to a second shift rod, and the second shift rod moves in the rectangular hole and fits with the inner side of the clamping block;

[0052] The spring five is arranged in the stopper and pushes the shift rod two to go deep into the rectangular hole.

[0053] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0054] 1. The tensile strength testing machine for composite polymer cable testing can synchronously push the two ends of the composite polymer cable fixed in the two movable blocks to move through the provided pushing mechanism, so as to achieve the effect of synchronous pushing, so as to realize the tensile strength test of the composite polymer cable.

[0055] 2. The tensile strength testing machine for composite polymer cable testing uses two movable clamping blocks to clamp the composite polymer cable through the clamping mechanism, and forms a block on the fixed ring through the elliptical hole formed between the two clamping blocks to achieve the fixation and limitation of the composite polymer cable; and then by deflecting the movable block, and after the test is completed, the movable block drives the two wedge-shaped push rods to contact the wedge-shaped fixed block, so as to push the two wedge blocks to release the limitation of the clamping block on the fixed ring, and then cooperate with the spring six to push the ejection rod to move, so as to realize the discharge of the composite polymer cable and the fixed ring, thereby improving the discharge effect after the test.

[0056] 3. The tensile strength testing machine for composite polymer cable testing has a discharging mechanism. After the test is completed, the gear lever will be separated from the U-shaped push block for a while, so that under the push of spring three, the U-shaped push block is pushed to move, and the connecting block and the slide are driven to move synchronously, and the discharging plate and the discharging arc block are pushed to move, so as to push the composite polymer cable that is released after the test is completed to achieve auxiliary discharging and improve the test efficiency.

[0057] 4. The tensile strength testing machine for composite polymer cable testing can store force on spring six through the sliding component during testing. After the test is completed, spring six can push spring four to push lever two to move, so as to achieve reset and assist in replacing the composite polymer cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0059] Figure 2 This is a schematic diagram of the back structure of the present invention;

[0060] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0061] Figure 4 Schematic diagram of the explosion structure of the present invention Figure 1 ;

[0062] Figure 5 Schematic diagram of the explosion structure of the present invention Figure 2 ;

[0063] Figure 6 Schematic diagram of the cross-sectional structure of the clamping mechanism of the present invention;

[0064] Figure 7 Schematic diagram of the cross-sectional structure of the clamping mechanism of the present invention;

[0065] Figure 8 It is a schematic diagram of the cross-sectional structure of the sliding component of the present invention.

[0066] In the figure: 1. Test table; 2. Operation box; 3. Bottom plate; 4. Push mechanism; 41. Electric push rod; 42. Push plate; 43. Push rod; 44. Movable block; 45. Slide bar 1; 5. Clamping mechanism; 51. Clamping block; 52. Spring 1; 53. Slide bar 2; 54. Fixing ring; 55. Top block; 56. Spring 2; 57. Push block; 58. Limiting rod; 59. Wedge block; 591. Wedge-shaped push rod; 592. Telescopic spring; 593. Wedge-shaped fixing block ;594. Push rod; 595. Fixed rod; 596. Spring six; 6. Discharge mechanism; 61. Discharge plate; 62. Discharge arc block; 63. Slide plate; 64. Connecting block; 65. U-shaped push block; 66. Gear rod one; 67. Round rod; 68. Spring three; 7. Box body; 8. Sliding assembly; 81. Fixed block; 82. Slide rail; 83. Clamping block; 84. Stop block; 85. Slide rod three; 86. Spring four; 87. Gear rod two; 88. Spring five. DETAILED DESCRIPTION

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0068] See also Figure 1-8 One embodiment of the present invention is: a tensile strength testing machine for testing composite polymer cables, comprising a testing platform 1, and further comprising:

[0069] The operation box 2 is fixedly connected to the bottom of the testing platform 1;

[0070] The bottom plate 3 is fixedly connected to the bottom of the operation box 2;

[0071] Two boxes 7 are fixedly connected to both sides of the top of the testing platform 1;

[0072] The pushing mechanism 4 is provided on the testing platform 1 and is used to pull the composite polymer cable;

[0073] The discharging mechanism 6 is arranged above the testing platform 1 and is used to push the composite polymer cable out after testing;

[0074] The sliding assembly 8 is provided on the discharging mechanism 6 and is used to limit the position of the composite polymer cable;

[0075] Among them, the driving mechanism 4 includes:

[0076] The electric push rod 41 is fixedly connected to the inner wall of the operation box 2, and the output end of the electric push rod 41 movably passes through the operation box 2 and is connected to the push plate 42;

[0077] Two push rods 43 are movably connected to the box body 7, and the outer sides of the push rods 43 are fixedly connected to the push plate 42;

[0078] The movable block 44 is hinged to the side of the two push rods 43 away from the push plate 42;

[0079] A plurality of slide rods 45 are fixedly connected to one side of the push rod 43, and the other side of the slide rod 45 is slidably connected to the inner wall of the box body 7;

[0080] The movable block 44 is hollow inside, and a clamping mechanism 5 is provided inside the movable block 44 for clamping and fixing the composite polymer cable.

[0081] Working principle: When testing the composite polymer cable, first clamp the two ends of the composite polymer cable by the clamping mechanism 5 respectively, and then start the two electric push rods 41 to push the push plates 42 on both sides to move, and at the same time push the two push rods 43 to move, and at the same time drive the movable block 44 to move, so that the composite polymer cable is pulled open by force. At this time, during the movement, the deformation length change of the composite polymer cable is recorded, and then the relationship between the tension and the tensile deformation of the composite polymer cable can be described by the following key formulas:

[0082] 1. The relationship between stress and strain:

[0083] σ = E · ε, where σ represents stress, or the tensile force per unit area, E represents the elastic modulus, and ε represents the strain, or the deformation per unit length. This formula indicates that within the elastic range, the stress and strain of a material are proportional, and the proportionality factor is the elastic modulus.

[0084] 2. Strain calculation formula:

[0085] ε = ΔL / L0, where ε represents the strain, ΔL represents the tensile deformation of the cable length, and L0 represents the original length of the cable;

[0086] 3. Stress calculation formula:

[0087] σ = F (composite polymer cable) / A, where σ represents stress, F represents the applied tension, and A represents the cross-sectional area of ​​the material.

[0088] Combining the above formulas, we can derive the relationship between the tensile force F (composite polymer cable) on the composite polymer cable, the tensile deformation, and ΔL:

[0089] F (composite polymer cable) = σ·A = E·ε·A = E·(ΔL / L0)·A

[0090] This formula shows that the tensile force F (composite polymer cable) applied to a composite polymer cable is related to the elastic modulus E, cross-sectional area A, tensile deformation ΔL, and original length L0. This relationship can be used to calculate the tensile force applied to the cable at a given tensile deformation, or the tensile deformation of the cable at a given tensile force.

[0091] See also Figure 1-8 Based on the above embodiment, in another embodiment of the present invention, the clamping mechanism 5 includes:

[0092] Two clamping blocks 51 are provided on the inner wall of the movable block 44;

[0093] The second slide bar 53 is fixedly connected to the inner wall of the movable block 44, and the clamping block 51 is slidably connected to the outer wall of the second slide bar 53;

[0094] Multiple springs 1 52 are arranged on the outer wall of the slide rod 2 53 and located on the outside of the two clamping blocks 51, and are used to push the two clamping blocks 51 closer to each other to clamp the composite polymer cable, and the two ends of the composite polymer cable are respectively fixedly connected with fixing rings 54 to prevent the fixing rings 54 and the composite polymer cable from moving.

[0095] The clamping mechanism 5 further comprises:

[0096] A top block 55 is fixedly connected to the top of the inner wall of the box body 7;

[0097] The push block 57 is movably connected to the inner wall of the top block 55, and a spring 2 56 is provided on the inner wall thereof to push the push block 57 downward;

[0098] Two limiting rods 58 are connected to the push block 57 via a push rod. The limiting rods 58 are movably connected to the top block 55 to limit the push block 57 from separating from the top block 55.

[0099] The bottom of the push rod is in contact with the top of the two push rods 43 and the movable block 44.

[0100] The clamping mechanism 5 further comprises:

[0101] Wedge block 59, fixedly connected to the clamping block 51;

[0102] The wedge-shaped fixing block 593 is fixedly connected to the inner wall of the box body 7 and is located between the two push rods 43;

[0103] Two wedge-shaped push rods 591 are slidably connected to the inclined surface of the wedge-shaped fixing block 593;

[0104] The telescopic spring 592 is connected to the inner side of the two wedge-shaped push rods 591 and is used to push the two wedge-shaped push rods 591 away from each other, and the outer wall of the wedge-shaped push rod 591 is in contact with the inner inclined surface of the wedge block 59;

[0105] A fixed rod 595 is fixedly connected to one side of the inner wall of the movable block 44, and a push rod 594 is slidably connected to the outer wall of the fixed rod 595, which is used to fit between the composite polymer cable and one end of the fixed ring 54 to push the fixed ring 54 out of the limit of the clamping block 51;

[0106] Spring six 596 is sleeved on the outer wall of the fixed rod 595 and fixedly connected to the ejection rod 594 and the inner wall of the movable block 44 to push the ejection rod 594 to slide on the fixed rod 595 toward the side of the fixed ring 54.

[0107] Working principle: First, install a fixing ring 54 at each end of the composite polymer cable to be tested, and then place the fixing ring 54 and the composite polymer cable inside the movable block 44. At this time, the two clamping blocks 51 are pushed closer to each other by the spring 1 52 to clamp and fix the composite polymer cable. At the same time, when the two clamping blocks 51 are brought closer together, the elliptical hole formed between the two clamping blocks 51 blocks the fixing ring 54, thereby fixing and limiting the composite polymer cable.

[0108] At the same time, in the process of pulling the two push rods 43, the movable block 44 is synchronously driven to move. At this time, the push rod 43 first keeps in contact with the bottom of the push rod to limit and maintain horizontal movement to stretch the composite polymer cable. Then, after the stretching is completed, the two wedge-shaped push rods 591 and the telescopic spring 592 are synchronously driven to move synchronously, and then when the two wedge-shaped rods 591 move to the wedge-shaped fixed block 593 and achieve resistance to the two wedge push rods 591, the two wedge blocks 59 are pushed together in the process of moving upward. Move away from each other, thereby driving the two clamping blocks 51 to move away from each other. At this time, after the two clamping blocks 51 move away from each other, the restriction on the fixed ring 54 is released, so that the fixed ring 54 is no longer blocked. At the same time, after the spring two 56 moves, it pushes downward, and at the same time pushes the push block 57 and the push rod downward, thereby pushing the movable block 44 to deflect downward, thereby realizing auxiliary discharging. At the same time, when the restriction on the fixed ring 54 is released again, the spring six 596 can be used to push the ejection rod 594 to move, so as to realize the ejection of the fixed ring 54, so as to realize the ejection of the composite polymer cable and the fixed ring 54, and realize the function of discharging after detection.

[0109] See also Figure 1-8 On the basis of the above embodiment, in another embodiment of the present invention, the discharging mechanism 6 includes:

[0110] The discharge plate 61 is slidably connected above the detection platform 1;

[0111] Two discharge arc blocks 62 are symmetrically and fixedly connected to the back of the discharge plate 61, and cooperate with the discharge plate 61 to push the tested composite polymer cable backward to discharge;

[0112] The slide plate 63 is fixedly connected to the discharge plate 61 and the discharge arc block 62 below, and slides above the detection platform 1 through two connecting blocks 64 connected at the bottom thereof.

[0113] The discharging mechanism 6 further comprises:

[0114] A U-shaped push block 65 is slidably connected to the inner wall of the operation box 2;

[0115] The round rod 67 is fixedly connected to the inner wall of the operating box 2 and is movably connected to the U-shaped push block 65;

[0116] Spring three 68 is mounted on the outer wall of the round rod 67 and pushes the U-shaped push block 65 to move backward;

[0117] The two shift levers 66 are movably connected to the operation box 2 respectively. The shift lever 66 is fixedly connected to the inner side of the push plate 42, and the other side is movably inserted into the U-shaped push block 65.

[0118] Working principle: When testing, after the push plate 42 moves and continues to move after the test is completed, the gear lever 66 will break away from the contact with the U-shaped push block 65, thereby being pushed by the spring 3 68 and pushing the U-shaped push block 65 to move, and synchronously driving the connecting block 64 and the slide plate 63 to move, and at the same time pushing the discharge plate 61 and the discharge arc block 62 to move, so as to push the composite polymer cable that is released after the test is completed to achieve auxiliary discharge and improve the detection efficiency.

[0119] See also Figure 1-8 Based on the above embodiment, in another embodiment of the present invention, the sliding assembly 8 includes:

[0120] A plurality of fixing blocks 81, two in a group and symmetrically fixedly connected to the inner side of the arc of the discharge plate 61 and the discharge arc block 62;

[0121] Two slide rails 82 are fixedly connected to each set of fixed blocks 81;

[0122] The two clamping blocks 83 are connected to the outer wall of the composite polymer cable by bolts, and the upper and lower sides of the two clamping blocks 83 slide on the slide rails 82 respectively.

[0123] The sliding assembly 8 further comprises:

[0124] Sliding rod three 85, fixedly connected to the inner side of each set of fixed blocks 81;

[0125] The stopper 84 is slidably connected to the outer wall of the slide rod 3 85 , and the outer wall of the slide rod 3 85 is provided with a spring 4 86 for pushing the stopper 84 away from the movable block 44 ;

[0126] Two rectangular holes are respectively provided on the slide rail 82, and the stop block 84 is movably connected to a second shift rod 87, and the second shift rod 87 moves in the rectangular hole and fits with the inner side of the clamping block 83;

[0127] Spring five 88 is disposed in the stopper 84 and pushes the second shift rod 87 deep into the rectangular hole.

[0128] Working principle: When the test is completed, the clamping block 51 will first release the clamping of the composite polymer cable and release the limit of the fixing ring 54. At the same time, the fixing ring 54 will deflect and push the fixing ring 54 to move through the spring 596 to push the fixing ring 54 out of the clamping block 51 for discharge;

[0129] At the same time, the discharge plate 61 pushes the entire composite polymer cable backward to assist in discharging;

[0130] At the same time, when conducting a tensile test, the composite polymer cable will be pulled and the clamping block 83 will be moved, and then the gear lever 2 87 will be pushed to move through the protrusion on one side of the clamping block 83, and the block 84 will move on the slide bar 3 85, and the spring 4 86 will be squeezed to produce deformation. At the same time, after the test is completed, after the clamping block 51 is disengaged, the gear lever 2 87 will be pushed to move through the spring 4 86 to achieve reset and assist in replacing the composite polymer cable.

[0131] According to Hooke's law, within the elastic range, the tensile deformation of the spring is proportional to the applied force. The specific formula is as follows:

[0132] F (spring) = K·ΔL

[0133] Base:

[0134] F (spring) is the tension applied to the spring

[0135] K is the spring constant (also called spring constant)

[0136] ΔL is the elongation of the spring (the length by which the spring is stretched).

[0137] This formula shows that the spring's tensile deformation, ΔL, is proportional to the applied force, F (spring), with a proportionality factor of 1 / K. Therefore, given the spring's spring constant, K, and the tensile deformation, ΔL, the spring's tensile force, F, can be calculated:

[0138] F (spring) = ΔL·K;

[0139] At this time, the actual tensile force of the composite polymer cable is obtained by F (composite polymer cable) - F (spring).

[0140] The present invention provides a tensile strength testing machine for testing composite polymer cables. There are numerous methods and approaches for implementing this technical solution. The above is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A tensile strength testing machine for testing composite polymer cables, comprising a testing table (1), characterized in that: Also includes: An operating box (2) fixedly connected to the bottom of the testing platform (1); A bottom plate (3) fixedly connected to the bottom of the operation box (2); Two boxes (7) are respectively fixedly connected to both sides of the top of the detection platform (1); A pushing mechanism (4), arranged on the detection platform (1), for pulling the composite polymer cable; A discharging mechanism (6) is arranged above the testing platform (1) and is used to push the composite polymer cable out after testing; A sliding assembly (8) is provided on the discharging mechanism (6) and is used to limit the position of the composite polymer cable; Wherein, the pushing mechanism (4) comprises: An electric push rod (41) is fixedly connected to the inner wall of the operating box (2), and an output end of the electric push rod (41) movably passes through the operating box (2) and is connected to a push plate (42); Two push rods (43) are movably connected to the box body (7), and the outer sides of the push rods (43) are fixedly connected to the push plate (42); A movable block (44) is hinged to a side of the two push rods (43) away from the push plate (42); A plurality of slide rods (45) are fixedly connected to one side of the push rod (43), and the other side of the slide rod (45) is slidably connected to the inner wall of the box (7); The movable block (44) is hollow inside, and a clamping mechanism (5) is provided inside the movable block (44) for clamping and fixing the composite polymer cable; The clamping mechanism (5) comprises: Two clamping blocks (51) are arranged on the inner wall of the movable block (44); The second slide bar (53) is fixedly connected to the inner wall of the movable block (44), and the clamping block (51) is slidably connected to the outer wall of the second slide bar (53); A plurality of springs (52) are provided on the outer wall of the slide rod (53) and outside the two clamping blocks (51), and are used to push the two clamping blocks (51) closer to each other to clamp the composite polymer cable, and the two ends of the composite polymer cable are respectively fixedly connected with fixed rings (54) to prevent the fixed rings (54) and the composite polymer cable from moving; The clamping mechanism (5) further comprises: A top block (55) is fixedly connected to the top of the inner wall of the box (7); A push block (57) is movably connected to the inner wall of the top block (55), and a spring 2 (56) is provided on the inner wall thereof to push the push block (57) downward; Two limiting rods (58) are connected to the push block (57) via a push rod, and the limiting rods (58) are movably connected to the top block (55) to limit the push block (57) from separating from the top block (55); The bottom of the push rod is in contact with the top of the two push rods (43) and the movable block (44); The clamping mechanism (5) further comprises: A wedge-shaped block (59) fixedly connected to the clamping block (51); A wedge-shaped fixing block (593) is fixedly connected to the inner wall of the box (7) and is located between the two push rods (43); Two wedge-shaped push rods (591) are slidably connected to the inclined surface of the wedge-shaped fixing block (593); a telescopic spring (592) connected to the inner sides of the two wedge-shaped push rods (591) for pushing the two wedge-shaped push rods (591) away from each other, with the outer wall of the wedge-shaped push rod (591) being in contact with the inner inclined surface of the wedge block (59); A fixed rod (595) is fixedly connected to one side of the inner wall of the movable block (44), and a push rod (594) is slidably connected to the outer wall of the fixed rod (595) for fitting onto one end of the composite polymer cable and the fixed ring (54) to push the fixed ring (54) out of the limit of the clamping block (51); Spring six (596) is sleeved on the outer wall of the fixed rod (595) and fixedly connected to the inner wall of the ejection rod (594) and the movable block (44) to push the ejection rod (594) to slide on the fixed rod (595) toward the side of the fixed ring (54).

2. The tensile strength testing machine for composite polymer cable testing according to claim 1, characterized in that: The discharging mechanism (6) comprises: A discharge plate (61) is slidably connected above the inspection platform (1); Two discharge arc blocks (62) are symmetrically and fixedly connected to the back of the discharge plate (61), and cooperate with the discharge plate (61) to push the tested composite polymer cable backward to discharge; The slide plate (63) is fixedly connected to the discharge plate (61) and the discharge arc block (62) below, and slides above the detection table (1) through two connecting blocks (64) connected to the bottom thereof.

3. The tensile strength testing machine for composite polymer cable testing according to claim 2, characterized in that: The discharging mechanism (6) further comprises: A U-shaped push block (65) slidably connected to the inner wall of the operating box (2); A round rod (67) is fixedly connected to the inner wall of the operating box (2) and is movably connected to the U-shaped push block (65); Spring three (68), which is sleeved on the outer wall of the round rod (67) and pushes the U-shaped push block (65) to move backward; Two shift levers (66) are movably connected to the operating box (2), respectively. One of the shift levers (66) is fixedly connected to the inner side of the push plate (42), and the other side is movably plugged into the U-shaped push block (65).

4. The tensile strength testing machine for composite polymer cables according to claim 3, characterized in that: The sliding assembly (8) comprises: A plurality of fixed blocks (81), two in a group and symmetrically fixedly connected to the inner side of the arc of the discharge plate (61) and the discharge arc block (62); Two slide rails (82) are respectively fixedly connected to each set of fixed blocks (81); The two clamping blocks (83) are connected to the outer wall of the composite polymer cable by bolts, and the upper and lower sides of the two clamping blocks (83) slide on the slide rails (82) respectively.

5. The tensile strength testing machine for composite polymer cable testing according to claim 4, characterized in that: The sliding assembly (8) further comprises: Sliding rod three (85), fixedly connected to the inner side of each set of fixed blocks (81); A stopper (84) is slidably connected to the outer wall of the slide rod (85), and a spring (86) is provided on the outer wall of the slide rod (85) for pushing the stopper (84) away from the movable block (44); Two rectangular holes are respectively opened on the slide rail (82), and the stop block (84) is movably connected to a second shift rod (87), and the second shift rod (87) moves in the rectangular hole and fits with the inner side of the clamping block (83); Spring five (88) is arranged in the stopper (84) and pushes the second shift rod (87) into the rectangular hole.

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