Tension test device for simulating high and low temperature environments

Abstract

The invention relates to the technical field of detection of hoisting steel wire ropes, and discloses a tensile test device for simulating high and low temperature environments, which comprises a temperature control box, the supporting frame is fixedly connected in the test cavity, and a through groove is formed in the center of the supporting frame; the pair of connecting plates are oppositely arranged on the two sides of the through groove, a tension detection assembly is arranged on the supporting frame, and the detection end of the tension detection assembly is connected with the pair of connecting plates so that the pair of connecting plates can pull the steel wire rope in the opposite directions; the clamps are detachably connected with the connecting plates in a one-to-one correspondence mode, reels are arranged in the clamps, one end of the steel wire rope penetrates through the reels and is wound around the outer side walls of the reels, clamping assemblies are arranged in the clamps and provided with two clamping ends, and the two clamping ends move towards the two opposite sides of the reels in the direction close to each other; and the clamping end is matched with the reel to fix the steel wire rope. The fixing effect on the steel wire rope can be improved, and the accuracy of steel wire rope tension detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lifting steel wire rope detection, in particular to a tensile test device simulating high and low temperature environments. Background Art

[0002] In common lifting equipment such as electric hoists and pneumatic hoists, wire ropes are important structures that can play roles such as traction and lifting. During the lifting process, the wire ropes will be subject to friction loss and fatigue damage, resulting in wire breakage and deformation. In order to ensure the safety and reliability of the wire ropes, they need to be tensile tested. The most common method is to stretch the wire ropes through a tensile testing machine to determine whether the tensile strength meets the requirements.

[0003] However, existing technologies typically use a clamp to clamp and secure the ends of the wire rope, or use a wire clamp to wrap the ends of the wire rope around the loop before securing the ends to the rope body. This results in a high stress on the wire rope at the clamping position, making it prone to cracking when the tensile testing machine pulls the wire rope. Furthermore, the tensile testing of the wire rope is related to the temperature of the working environment, and existing technologies lack the means to control temperature changes during the tensile test, resulting in uncertainty in the quality testing of the wire rope in actual working environments. Therefore, a tensile testing device that can simulate high and low temperature environments is urgently needed to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a tensile testing device that simulates high and low temperature environments to solve the problems existing in the above-mentioned prior art, thereby improving the fixing effect of the wire rope and improving the accuracy of the wire rope tension detection.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a tensile test device for simulating high and low temperature environments, comprising:

[0006] A temperature control box having a test chamber defined therein;

[0007] A support frame is fixed in the test cavity, and a through slot is formed in the center of the support frame;

[0008] A pair of connecting plates are arranged oppositely on both sides of the through slot, a tension detection component is provided on the support frame, and a detection end of the tension detection component is connected to the pair of connecting plates so that the pair of connecting plates pull the wire rope in opposite directions;

[0009] A clamp is detachably connected to the connecting plate in a one-to-one correspondence, a winding wheel is provided in the clamp, one end of the wire rope passes through the winding wheel and is wound around the outer wall of the winding wheel, a clamping assembly is provided in the clamp, the clamping assembly has two clamping ends, and the two clamping ends move toward the opposite sides of the winding wheel in a direction approaching each other, and the clamping ends cooperate with the winding wheel to fix the wire rope.

[0010] Preferably, the clamp comprises:

[0011] Two splints detachably connected to each other, a receiving space defined between the two splints, and the winding wheel is embedded in the receiving space;

[0012] A pair of clamping blocks are connected to both sides of the winding wheel in a relatively sliding manner. The clamping blocks are the clamping ends, and a push rod is elastically slidably connected in the clamping plate. A control component is provided on the connecting plate, and the control end of the control component is connected to the push rod. The push rod is abutted against the clamping blocks to move the pair of clamping blocks in a direction close to each other.

[0013] Preferably, the control component includes:

[0014] A pair of clamping seats are relatively slidably connected to both sides of the connecting plate. A driving member is provided on the connecting plate. A driving end of the driving member is connected to the pair of clamping seats so that the pair of clamping seats move closer to or farther away from each other. A locking groove is provided on the mutually approaching sides of the pair of clamping seats. Both sides of the two clamping plates are slidably connected to the locking groove.

[0015] A fixed plate is fixedly connected to one end of the push rod extending out of the clamping plate, a top block is fixedly connected to the inner side wall of the embedding groove close to the fixed plate, and a bevel is provided on the bottom end of the top block close to the fixed plate. When the clamping seat moves toward the clamping plate, the bevel is in sliding contact with the fixed plate to make the fixed plate move toward the clamping plate.

[0016] Preferably, the clamping seat is perpendicular to the moving direction of the fixed plate, and the clamping block is a wedge-shaped block. The push rod extends into one end of the clamping plate and slides in contact with the inclined side of the clamping block. A spring is wound around the part of the push rod located outside the clamping plate, and the two ends of the spring respectively resist the clamping plate and the fixed plate.

[0017] Preferably, it also includes:

[0018] A transmission gear is rotatably connected to the center of the outer wall of the winding wheel, and a pair of tooth plates are respectively engaged on both sides of the transmission gear, and the pair of tooth plates are parallel to each other and fixedly connected to the pair of clamping blocks in a one-to-one correspondence;

[0019] A limiting column, a sliding groove is provided on the sides of the two clamps close to each other, the clamping block is slidably connected to the sliding groove, the limiting column is fixed to the inner wall of the sliding groove, the side wall of the clamping block is provided with a limiting groove, and the limiting column is slidably connected to the limiting groove.

[0020] Preferably, the driving member includes:

[0021] A servo motor is fixedly connected to the connecting plate, and a slot is formed on a side of the connecting plate close to the clamping plate;

[0022] The bidirectional lead screw is connected in the empty slot, the output shaft of the servo motor is coaxially fixed to the bidirectional lead screw, and moving blocks are respectively threadedly sleeved on both ends of the bidirectional lead screw. The two moving blocks are fixed one-to-one with a pair of the clamping seats, and the two moving blocks are symmetrically slid in the empty slot along the center.

[0023] Preferably, a plurality of threaded holes are provided on the sides of the two splints close to each other, and the same bolt is screwed into the two relatively distributed threaded holes. Positioning columns are fixed around the side wall of any one of the splints, and the positioning columns are distributed between the two splints. A positioning groove is provided on the side of the other splint close to the positioning column, and the positioning column is clamped in the positioning groove.

[0024] Preferably, the steel wire rope is passed through the center of the outer peripheral side of the winding wheel, and two wire grooves are symmetrically opened on the outer peripheral side of the winding wheel relative to the steel wire rope. A protrusion is integrally formed on the side of the clamping block close to the winding wheel, and the protrusion is distributed corresponding to the wire groove.

[0025] Preferably, the tension detection component includes:

[0026] A hydraulic cylinder, fixedly connected to the top of the support frame, wherein the piston rod of the hydraulic cylinder extends vertically downward and is fixedly connected to the adjacent connecting plate;

[0027] A tension sensor is fixedly connected to the bottom end of the support frame, and a detection end of the tension sensor is fixedly connected to the adjacent connecting plate through a connecting rod;

[0028] Wherein, grooves are provided on opposite sides of the inner wall of the support frame, and both ends of the connecting plate extend into the grooves and make sliding contact with the inner wall of the grooves.

[0029] Preferably, temperature sensors are fixedly connected to the four sides of the outer side wall of the support frame, a plurality of the temperature sensors define a temperature measurement interval, and a pair of the connecting plates are arranged in the temperature measurement interval.

[0030] The present invention discloses the following technical effects:

[0031] The present invention fixes the support frame in the test chamber and uses a temperature control box to adjust the temperature in the test chamber, so that the wire rope tension test can be carried out in a high temperature or low temperature environment, and the movement of a pair of connecting plates is limited by the through groove of the support frame, and the tension detection component acts on the pair of connecting plates so that the pair of connecting plates cooperate to pull the wire rope to detect the tension of the wire rope. In addition, the connecting plates are detachably connected to each other with a clamp, and the wire rope is wound thereon through a winding wheel provided in the clamp, and the wire rope first passes through the winding wheel and then is wound around the outer peripheral side of the winding wheel. The clamping end of the clamping component is used to clamp the outer peripheral side of the winding wheel, and the wire rope on the winding wheel is clamped and fixed in relative directions, so that the force applied to the wire rope during pulling is maintained at the position passing through the winding wheel, and the clamping and fixing force of the wire rope is distributed on the outer wall of the winding wheel, thereby effectively reducing the situation where the wire rope at the clamping position is cracked due to the tension, thereby improving the fixing effect of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a diagram showing the connection between the temperature control box and the support frame in the present invention;

[0034] Figure 2 A diagram showing the connection between the winding wheel and the wire rope in the present invention;

[0035] Figure 3 This is a diagram showing the connection between the holder and the splint in the present invention;

[0036] Figure 4 A diagram showing the connection between the clamping block and the winding wheel in the present invention;

[0037] Figure 5 Schematic diagram of the structure of the limiting column and the clamping plate in the present invention;

[0038] Among them, 1. Temperature control box; 2. Support frame; 3. Connecting plate; 4. Wire rope; 5. Winding wheel; 6. Clamping plate; 7. Clamping block; 8. Push rod; 9. Card seat; 10. Fixed plate; 11. Push block; 12. Spring; 13. Transmission gear; 14. Tooth plate; 15. Limit column; 16. Servo motor; 17. Bidirectional screw; 18. Moving block; 19. Bolt; 20. Positioning column; 21. Bump; 22. Wire trough; 23. Hydraulic cylinder; 24. Tension sensor; 25. Connecting rod; 26. Temperature sensor. DETAILED DESCRIPTION

[0039] 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.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Reference Figure 1-Figure 5 The present invention provides a tensile test device for simulating high and low temperature environments, comprising:

[0042] A temperature control box 1 defines a test chamber therein;

[0043] The support frame 2 is fixed in the test chamber, and a through slot is provided in the center of the support frame 2;

[0044] A pair of connecting plates 3 are arranged on both sides of the through slot, and a tension detection component is provided on the support frame 2. The detection end of the tension detection component is connected to the pair of connecting plates 3 so that the pair of connecting plates 3 pull the wire rope 4 in opposite directions;

[0045] The clamp is detachably connected to the connecting plate 3 in a one-to-one correspondence. A winding wheel 5 is provided in the clamp. One end of the wire rope 4 passes through the winding wheel 5 and is wound around the outer wall of the winding wheel 5. A clamping assembly is provided in the clamp. The clamping assembly has two clamping ends, and the two clamping ends move toward the opposite sides of the winding wheel 5 in a direction approaching each other. The clamping ends cooperate with the winding wheel 5 to fix the wire rope 4.

[0046] The present invention fixes the support frame 2 in the test chamber and uses the temperature control box 1 to adjust the temperature in the test chamber, so that the tension of the wire rope 4 can be tested in a high or low temperature environment, and the movement of the pair of connecting plates 3 is limited by the through groove of the support frame 2. The tension detection component acts on the pair of connecting plates 3, so that the pair of connecting plates 3 cooperate to pull the wire rope 4 to detect the tension of the wire rope 4. In addition, the connecting plates 3 are detachably connected one by one with clamps, and the wire rope 4 is wound on the winding wheel 5 provided in the clamp. The wire rope 4 is wound around the outer circumference of the reel 5 and the clamping end of the clamping assembly is used to clamp the outer circumference of the reel 5. The wire rope 4 on the reel 5 is clamped and fixed in the opposite direction, so that the force applied to the wire rope 4 during pulling is maintained at the position of passing through the reel 5, and the clamping and fixing force of the wire rope 4 is distributed on the outer wall of the reel 5, thereby effectively reducing the possibility of the wire rope 4 at the clamping position being cracked due to the tension, thereby improving the fixing effect of the wire rope 4.

[0047] Specifically, the temperature control box 1 can be a common high and low temperature temperature change test box.

[0048] Furthermore, the fixture includes:

[0049] Two plywood plates 6 are detachably connected to each other, with a receiving space defined between the two plywood plates 6, and the winding wheel 5 is embedded in the receiving space;

[0050] A pair of clamping blocks 7 are connected to both sides of the winding wheel 5 in a relative sliding manner. The clamping blocks 7 are the clamping ends, and a push rod 8 is elastically slidably connected in the clamping plate 6. A control component is provided on the connecting plate 3. The control end of the control component is connected to the push rod 8. The push rod 8 is abutted against the clamping blocks 7 to move the pair of clamping blocks 7 in a direction close to each other.

[0051] The winding wheel 5 is fixed by two detachably connected splints 6, and the winding wheel 5 is embedded in the accommodating area. The two sides of the winding wheel 5 are clamped by a pair of relatively sliding clamping blocks 7. The control component drives the top rod 8 to squeeze the clamping blocks 7, so that the clamping blocks 7 firmly clamp the wire rope 4 on both sides of the winding wheel 5.

[0052] Furthermore, the control component includes:

[0053] A pair of clamping seats 9 are relatively slidably connected to both sides of the connecting plate 3. A driving member is provided on the connecting plate 3. The driving end of the driving member is connected to the pair of clamping seats 9 so that the pair of clamping seats 9 are moved closer to or away from each other. The mutually approaching sides of the pair of clamping seats 9 are provided with an embedding groove, and both sides of the two clamping plates 6 are slidably connected to the embedding groove;

[0054] The fixed plate 10 is fixed to the end of the push rod 8 extending out of the splint 6, and a top block 11 is fixed to the side of the inner side wall of the groove close to the fixed plate 10. The bottom end of the top block 11 is provided with a beveled edge close to the side of the fixed plate 10. When the holder 9 moves toward the splint 6, the beveled edge slides in contact with the fixed plate 10 to move the fixed plate 10 toward the splint 6.

[0055] The clamping seat 9 is driven by the driving member so that a pair of clamping seats 9 are brought closer to each other, and the two sides of the two splints 6 are clamped and fixed through the groove to achieve the connection and fixation of the splints 6 and the clamping seat 9. When the splints 6 are removed, the pair of clamping seats 9 can be controlled to move away from each other.

[0056] In addition, a top block 11 is fixed in the embedded groove, and the fixed plate 10 to which the end of the top rod 8 is fixed is in sliding contact with the top block 11. When a pair of clamps 9 clamp the fixed splint 6, the top block 11 squeezes the fixed plate 10, extends the top rod 8 into the splint 6 and squeezes the clamping block 7, thereby achieving clamping and fixing of the wire rope 4 while fixing the splint 6.

[0057] Specifically, the distance between the fixed plate 10 and the clamping plate 6 is greater than the distance between the clamping block 7 and the winding wheel 5. As the top block 11 squeezes the fixed plate 10 to fix the base 9 and the clamping plate 6, it ensures that the wire rope 4 can be effectively fixed between the clamping block 7 and the winding wheel 5.

[0058] Furthermore, the moving direction of the clamping seat 9 is perpendicular to that of the fixed plate 10, and the clamping block 7 is a wedge-shaped block. The push rod 8 extends into one end of the clamping plate 6 and slides in contact with the inclined side of the clamping block 7. A spring 12 is wound around the part of the push rod 8 located outside the clamping plate 6, and the two ends of the spring 12 are respectively against the clamping plate 6 and the fixed plate 10.

[0059] By arranging the moving directions of the clamping seat 9 and the fixed plate 10 in a vertical direction, the clamping stability of the wire rope 4 is improved, and the spring 12 is used to reset the push rod 8. When the clamping seat 9 moves in the opposite direction, the spring 12 drives the push rod 8 to pop out, making it convenient to remove the winding wheel 5.

[0060] Furthermore, it also includes:

[0061] The transmission gear 13 is rotatably connected to the center of the outer wall of the winding wheel 5. A pair of tooth plates 14 are respectively engaged on both sides of the transmission gear 13. The pair of tooth plates 14 are parallel to each other and fixedly connected to the pair of clamping blocks 7 in a one-to-one correspondence;

[0062] The limiting column 15 and the sides of the two clamping plates 6 close to each other are provided with a sliding groove, the clamping block 7 is slidably connected in the sliding groove, the limiting column 15 is fixed to the inner wall of the sliding groove, the side wall of the clamping block 7 is provided with a limiting groove, and the limiting column 15 is slidably connected to the limiting groove.

[0063] The mutual movement of the pair of clamping blocks 7 is synchronized through the transmission gear 13 and a pair of tooth plates 14. As the top rod 8 squeezes the clamping block 7, no matter which one of the pair of clamping blocks 7 moves, the other clamping block 7 can move synchronously, and the limiting column 15 is used to maintain the sliding stability of the clamping block 7, so that the pair of clamping blocks 7 can effectively clamp and fix the wire rope 4 wound around the outer peripheral side of the winding wheel 5.

[0064] Furthermore, the driving member includes:

[0065] The servo motor 16 is fixed in the connecting plate 3, and a slot is provided on the side of the connecting plate 3 close to the clamping plate 6;

[0066] The bidirectional screw 17 is connected in the empty slot, the output shaft of the servo motor 16 is coaxially fixed to the bidirectional screw 17, and the two ends of the bidirectional screw 17 are respectively threaded with moving blocks 18. The two moving blocks 18 are fixed to a pair of card seats 9 in a one-to-one correspondence, and the two moving blocks 18 are symmetrically slid in the empty slot along the center.

[0067] The servo motor 16 rotates the bidirectional lead screw 17 to control the two moving blocks 18 to move in opposite directions, driving a pair of clamping seats 9 to clamp and fix the clamping plate 6. Specifically, the servo motor 16 adopts a common stepping motor to keep the pair of clamping seats 9 stably clamped.

[0068] Furthermore, a plurality of threaded holes are provided on the mutually adjacent sides of the two plywood 6, and the same bolt 19 is screwed into the two relatively distributed threaded holes. Positioning posts 20 are fixed around the side wall of any plywood 6, and the positioning posts 20 are distributed between the two plywood 6. A positioning groove is provided on the side of the other plywood 6 close to the positioning post 20, and the positioning post 20 is snap-fitted into the positioning groove.

[0069] The two clamping plates 6 are clamped and positioned by the positioning columns 20 and the positioning grooves, and then the corresponding threaded holes are screwed together by rotating the bolts 19 to achieve a detachable connection between the two clamping plates 6. In addition, the support of the two clamping plates 6 by the positioning columns 20 can effectively maintain the distance between the two clamping plates 6, providing space for the sliding of the clamping block 7 and the rotation of the transmission gear 13.

[0070] Furthermore, a steel wire rope 4 is passed through the center of the outer periphery of the winding wheel 5, and two wire grooves 22 are symmetrically opened on the outer periphery of the winding wheel 5 relative to the steel wire rope 4. A protrusion 21 is integrally formed on the side of the clamping block 7 close to the winding wheel 5, and the protrusion 21 is distributed correspondingly to the wire groove 22.

[0071] The protrusion 21 formed on the side wall of the clamping block 7 cooperates with the wire groove 22 opened on the outer peripheral side of the winding wheel 5 to ensure the clamping effect of the clamping block 7 on the winding wheel 5 and improve the fixing stability of the wire rope 4.

[0072] Furthermore, the tension detection component includes:

[0073] The hydraulic cylinder 23 is fixed to the top of the support frame 2, and the piston rod of the hydraulic cylinder 23 extends vertically downward and is fixed to the adjacent connecting plate 3; the tension sensor 24 is fixed to the bottom end of the support frame 2, and the detection end of the tension sensor 24 is fixed to the adjacent connecting plate 3 through the connecting rod 25; wherein, grooves are opened on the opposite sides of the inner wall of the support frame 2, and the two ends of the connecting plate 3 extend into the groove and slide in contact with the inner wall of the groove.

[0074] A connecting plate 3 is fixed by using a connecting rod 25 and a tension sensor 24, and then the other connecting plate 3 is driven to move in the opposite direction by the hydraulic cylinder 23, so that the distance between the pair of connecting plates 3 gradually increases, thereby pulling the wire rope 4. During the process, the tension signal fed back by the tension sensor 24 can be used to obtain the tension exerted on the wire rope 4, thereby ensuring the effective implementation of the tension test.

[0075] Furthermore, temperature sensors 26 are fixedly connected to the four sides of the outer wall of the support frame 2 , and a plurality of temperature sensors 26 define a temperature measurement interval, and a pair of connecting plates 3 are arranged in the temperature measurement interval.

[0076] The temperature around the support frame 2 is detected by setting up several temperature sensors 26 to determine whether the temperature within the temperature measurement range meets the test requirements. During the tensile test, the temperature of the temperature control box 1 is changed to perform tensile tests in high and low temperature environments.

[0077] The present invention provides a tensile test device simulating high and low temperature environments. The working principle is as follows:

[0078] Reference Figure 2, after one end of the wire rope 4 passes through the winding wheel 5, and the part extending out of the winding wheel 5 is successively wound on the two wire grooves 22, the winding wheel 5 is then embedded in the accommodating interval of the splint 6, so that a pair of clamping blocks 7 are relatively slidably connected to both sides of the winding wheel 5, the two splints 6 are butt-jointed and fixed by bolts 19, and the four push rods 8 are successively inserted into the splint 6, and the push rods 8 on the same side of the splint 6 are fixed and supported by a fixed plate 10, so that the two fixed plates 10 are distributed on both sides of the splint 6, and the bidirectional screw 17 is rotated by the servo motor 16 to move a pair of clamping seats 9 closer to each other, and the two splints 6 are clamped and fixed by the embedded groove. The top block 11 fixed in the groove is in sliding contact with the fixed plate 10, thereby squeezing the fixed plate 10 to make the top rod 8 extend into the clamping plate 6, and the top rod 8 is used to squeeze the clamping block 7 to move the clamping block 7 toward the winding wheel 5 to fix the wire rope 4 to the winding wheel 5, and fix the two clamping plates 6 to a pair of clamping seats 9. By repeating the above steps, the two ends of the wire rope 4 are respectively fixed to a pair of connecting plates 3 through four clamping plates 6, and then the temperature control box 1 is closed to adjust the temperature required for the test, and the hydraulic cylinder 23 is started to pull one of the connecting plates 3, and the tension value is detected by the tension sensor 24 connected to the other connecting plate 3 to realize the test of the tension of the wire rope 4.

[0079] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0080] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A tensile test device simulating high and low temperature environments, characterized in that: include: A temperature control box (1) defines a test chamber therein; A support frame (2) is fixedly connected in the test cavity, and a through slot is provided at the center of the support frame (2); A pair of connecting plates (3) are arranged oppositely on both sides of the through slot, a tension detection component is provided on the support frame (2), and a detection end of the tension detection component is connected to the pair of connecting plates (3) so that the pair of connecting plates (3) pull the steel wire rope (4) in opposite directions; A clamp is detachably connected to the connecting plate (3) in a one-to-one correspondence, a winding wheel (5) is provided in the clamp, one end of the wire rope (4) passes through the winding wheel (5) and is wound around the outer wall of the winding wheel (5), a clamping assembly is provided in the clamp, the clamping assembly has two clamping ends, and the two clamping ends move toward the opposite sides of the winding wheel (5) in a direction approaching each other, and the clamping ends cooperate with the winding wheel (5) to fix the wire rope (4).

2. The simulated high and low temperature environment tensile testing device according to claim 1, characterized in that: The fixture comprises: Two splints (6) detachably connected to each other, a receiving space defined between the two splints (6), and the winding wheel (5) is embedded in the receiving space; A pair of clamping blocks (7) are connected to both sides of the winding wheel (5) in a relatively sliding manner, the clamping blocks (7) are the clamping ends, and a push rod (8) is elastically slidably connected in the clamping plate (6). A control component is provided on the connecting plate (3), the control end of the control component is connected to the push rod (8), and the push rod (8) abuts against the clamping blocks (7) to move the pair of clamping blocks (7) in a direction close to each other.

3. The simulated high and low temperature environment tensile testing device according to claim 2, characterized in that: The control component includes: A pair of clamping seats (9) are relatively slidably connected to both sides of the connecting plate (3); a driving member is provided on the connecting plate (3); a driving end of the driving member is connected to the pair of clamping seats (9) so that the pair of clamping seats (9) are moved closer to or farther away from each other; an embedding groove is provided on the mutually approaching sides of the pair of clamping seats (9), and both sides of the two clamping plates (6) are slidably connected to the embedding groove; A fixed plate (10) is fixed to one end of the push rod (8) extending out of the clamping plate (6); a top block (11) is fixed to the side of the inner side wall of the embedding groove close to the fixed plate (10); a bevel is provided at the bottom end of the top block (11) close to the side of the fixed plate (10); when the clamping seat (9) moves toward the clamping plate (6), the bevel comes into sliding contact with the fixed plate (10), so that the fixed plate (10) moves toward the clamping plate (6).

4. The simulated high and low temperature environment tensile testing device according to claim 3, characterized in that: The clamping seat (9) is perpendicular to the moving direction of the fixed plate (10), and the clamping block (7) is a wedge-shaped block. The push rod (8) extends into one end of the clamping plate (6) and slides in contact with the inclined side of the clamping block (7). A spring (12) is wound around the part of the push rod (8) located outside the clamping plate (6), and the two ends of the spring (12) are respectively against the clamping plate (6) and the fixed plate (10).

5. The simulated high and low temperature environment tensile testing device according to claim 2, characterized in that: Also includes: A transmission gear (13) is rotatably connected to the center of the outer wall of the winding wheel (5), and a pair of tooth plates (14) are respectively engaged on both sides of the transmission gear (13), and the pair of tooth plates (14) are parallel to each other and fixedly connected to the pair of clamping blocks (7) in a one-to-one correspondence; A limiting column (15) is provided on the mutually adjacent sides of the two clamping plates (6), the clamping block (7) is slidably connected in the slidable groove, the limiting column (15) is fixedly connected to the inner wall of the slidable groove, the side wall of the clamping block (7) is provided with a limiting groove, and the limiting column (15) is slidably connected to the limiting groove.

6. The simulated high and low temperature environment tensile testing device according to claim 3, characterized in that: The driving member includes: A servo motor (16) is fixedly connected to the connecting plate (3), and a slot is provided on a side of the connecting plate (3) close to the clamping plate (6); A bidirectional lead screw (17) is connected in the empty slot, an output shaft of the servo motor (16) is coaxially fixed to the bidirectional lead screw (17), and moving blocks (18) are respectively threadedly sleeved on both ends of the bidirectional lead screw (17). The two moving blocks (18) are fixedly connected to a pair of the clamping seats (9) in a one-to-one correspondence, and the two moving blocks (18) are symmetrically slidably connected in the empty slot along the center.

7. The simulated high and low temperature environment tensile testing device according to claim 2, characterized in that: A plurality of threaded holes are correspondingly provided on the mutually adjacent sides of the two clamps (6), and the same bolt (19) is screwed into the two relatively distributed threaded holes. Positioning columns (20) are fixed around the side wall of any one of the clamps (6), and the positioning columns (20) are distributed between the two clamps (6). A positioning groove is provided on the side of the other clamp (6) close to the positioning column (20), and the positioning column (20) is engaged with the positioning groove.

8. The simulated high and low temperature environment tensile testing device according to claim 2, characterized in that: The steel wire rope (4) is passed through the center of the outer peripheral side of the winding wheel (5), and two wire grooves (22) are symmetrically opened on the outer peripheral side of the winding wheel (5) relative to the steel wire rope (4). A protrusion (21) is integrally formed on the side of the clamping block (7) close to the winding wheel (5), and the protrusion (21) is distributed correspondingly to the wire grooves (22).

9. The simulated high and low temperature environment tensile testing device according to claim 1, characterized in that: The tension detection component includes: A hydraulic cylinder (23) is fixedly connected to the top of the support frame (2), and a piston rod of the hydraulic cylinder (23) extends vertically downward and is fixedly connected to the adjacent connecting plate (3); A tension sensor (24) is fixedly connected to the bottom end of the support frame (2), and a detection end of the tension sensor (24) is fixedly connected to the adjacent connecting plate (3) through a connecting rod (25); Wherein, grooves are provided on opposite sides of the inner wall surface of the support frame (2), and both ends of the connecting plate (3) extend into the grooves and are in sliding contact with the inner wall surface of the grooves.

10. The simulated high and low temperature environment tensile testing device according to claim 1, characterized in that: Temperature sensors (26) are fixedly connected to the four sides of the outer wall of the support frame (2), and a plurality of the temperature sensors (26) define a temperature measurement interval. A pair of the connecting plates (3) are arranged in the temperature measurement interval.

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