Tensile strength testing device for network cable production and processing

Abstract

The invention relates to the technical field of network cable production equipment, in particular to a tensile strength testing device for network cable production and processing, which comprises a base, the top of the base is fixedly connected with a support column, the top of the support column is fixedly connected with a top plate, the top of the top plate is fixedly provided with a hydraulic cylinder, and the telescopic end of the hydraulic cylinder is fixedly connected with a moving plate; a lower clamp for clamping the left-right outer wall of a network cable is arranged on the base, an upper clamp for clamping the front-back outer wall of the network cable is arranged at the bottom of the movable plate, a fixed protection plate is fixedly connected to the outer wall of the back side of the base, an opening and closing assembly is arranged on the top plate, and the fixed protection plate is provided with a movable protection plate capable of moving up and down through the opening and closing assembly. Multi-dimensional fixation is achieved through a two-way clamping structure of the lower clamp and the upper clamp; the left-and-right and front-and-back four-direction clamping mode can effectively prevent the network cable from slipping and shifting in the tensile test process, and ensures the stability of the test process.

Description

Technical Field

[0001] The present invention relates to the technical field of network cable production equipment, and in particular to a tensile strength testing device for network cable production and processing. Background Art

[0002] In the current digital age, network cables, as key carriers of information transmission, are widely used in numerous fields, including communications, computer networks, smart homes, and industrial control. Their transmission stability and service life are directly related to the normal operation of various systems. With the continuous increase in network transmission rates and the increasing complexity of application environments, more stringent requirements are being placed on the physical properties of network cables, especially their tensile strength. During installation, wiring, and long-term use, network cables are inevitably subject to external forces. If the tensile strength is insufficient, problems such as outer sheath damage and internal conductor breakage are very likely to occur. These problems not only lead to network signal interruption and data transmission failure, but can also cause equipment damage, increased maintenance costs, and a series of other adverse consequences. Therefore, accurate and reliable tensile strength testing is crucial during the production and processing of network cables.

[0003] Currently, there are a variety of testing devices on the market for testing the tensile strength of network cables. These devices typically clamp the network cable using upper and lower clamps, and then use a drive mechanism to drive the clamps in relative motion, simulating an external pulling force, thereby testing the tensile performance of the network cable. However, the clamps in traditional testing devices have obvious flaws in their clamping methods. Most clamps can only clamp the outer sheath of the network cable in a single direction, such as only fixing it from the left and right or front and back. This single-direction clamping method causes uneven force on the clamping part when the network cable is subjected to tension, making it prone to slipping and shifting in the clamp. This leads to an unstable testing process and an inability to accurately obtain the true tensile strength data of the network cable. This seriously affects the accuracy and reliability of the test results and makes it difficult to meet the testing requirements of high-quality network cable production. At the same time, during the tensile strength test of the network cable, when the network cable reaches its ultimate tensile strength and breaks, the impact force generated at the moment of breakage may cause the outer covering and wire fragments at the broken end of the network cable to fly around. However, most existing testing devices lack effective protective structures, and the flying network cable can easily cause harm to the human body. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing traditional testing device, that is, the clamp can only clamp the outer skin of the network cable in a single direction, which may easily cause the network cable to slip or deviate in the clamp, resulting in an unstable testing process, and most testing devices lack effective protective structures and may easily cause harm to the human body. A tensile strength testing device for network cable production and processing is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A tensile strength testing device for network cable production and processing includes a base, the top of the base is fixedly connected to a support column, the top of the support column is fixedly connected to a top plate, the top of the top plate is fixedly installed with a hydraulic cylinder, the telescopic end of the hydraulic cylinder is fixedly connected to a movable plate, the base is provided with a lower clamp for clamping the left and right outer walls of the network cable, the bottom of the movable plate is provided with an upper clamp for clamping the front and back outer walls of the network cable, the back outer wall of the base is fixedly connected to a fixed protective plate, the top plate is provided with an opening and closing assembly, and the fixed protective plate is provided with a movable protective plate that can be moved up and down through the opening and closing assembly.

[0006] Preferably, the lower clamp includes a servo motor 1, a slide groove, a bidirectional lead screw and a pair of symmetrically distributed lower clamping plates. The servo motor 1 is fixedly mounted on the right outer wall of the base, the slide groove is opened at the top of the base, the bidirectional lead screw is rotatably set in the slide groove, one end of which passes through the outer wall of the base and is fixedly connected to the output end of the servo motor 1, the lower clamping plate is threadedly connected to the bidirectional lead screw, and the lower clamping plate slides with the inner wall of the slide groove.

[0007] Preferably, the upper clamp includes a symmetrically distributed fixed box, a sliding cavity, an upper clamping plate, a screw, a connecting rod, a T-shaped shaft and a movable groove, the fixed box is fixedly connected to the bottom of the movable plate, the sliding cavity is opened on the side opposite to the fixed box, the upper clamping plate is slidably arranged in the sliding cavity, the screw is rotatably connected to the upper clamping plate, one end of the connecting rod is movably connected to the outer wall of the upper clamping plate, the other end of the connecting rod is movably connected to the T-shaped shaft, the movable groove is opened at the bottom of the movable plate, and the T-shaped shaft slides in cooperation with the movable groove.

[0008] Preferably, the screw is arranged on a fixed box close to the side of the movable protective plate, connecting rods are provided on both sides of the outer wall of the upper clamping plate, and limiting rods are provided on both sides of the screw, and the limiting rods pass through the outer wall of the fixed box and are slidably connected. The screw is threadedly connected to the outer wall of the fixed box, and movable openings for the connecting rod to move are opened on both sides of the fixed box.

[0009] Preferably, the opening and closing assembly includes a servo motor 2 fixedly mounted on the top of the top plate, the output end of the servo motor 2 is fixedly connected to a gear through a coupling, a pair of symmetrically distributed limiting holes are provided on the front end of the top plate, a T-slot is provided on the outer wall of the fixed protective plate, a rack groove meshing with the gear is provided on the middle end of the inner wall of the movable protective plate, a limiting bar slidably connected to the limiting hole is fixedly connected to the inner wall of the movable protective plate, and a limiting pulley slidably matched with the T-slot is fixedly installed on the outer wall of the movable protective plate close to the fixed protective plate.

[0010] Preferably, mounting seats are provided on both sides of the gear, a groove is provided on the top of the top plate to facilitate the rotation of the gear, and the gear is rotatably arranged in the mounting seats.

[0011] Preferably, a control panel is fixedly mounted on the front outer wall of the base, a notch for the control panel to pass through is opened on the outer wall of the movable protective plate, and a force sensor is connected between the telescopic end of the hydraulic cylinder and the movable plate.

[0012] Preferably, there are four support columns distributed in a rectangular array, and two of the support columns close to the fixed protective plate are slidably connected to a sliding frame, and an extensometer is fixedly installed on the side of the sliding frame close to the detection area, and the part of the sliding frame close to the support column is penetrated and threadedly connected with a cap bolt.

[0013] Regarding the above content and purpose, please help me write a beneficial effect; Compared with the prior art, the present invention has the following beneficial effects: 1. When in use, the present invention can achieve multi-dimensional fixation through the two-way clamping structure of "lower clamp + upper clamp"; this "left and right + front and back" four-way clamping method can effectively prevent the network cable from slipping and deflecting during the tensile test, ensure the stability of the test process, avoid the distortion of test data caused by clamping problems from the root, and provide a reliable basis for subsequent strength analysis.

[0014] 2. When in use, the present invention can set up a dual protection system of "fixed protective plate + movable protective plate". The fixed protective plate is fixed to the back side of the base to form basic protection, and the movable protective plate is moved up and down by the opening and closing component. During testing, it can be closed to form a surround-type protective space to completely isolate the network cable testing area; it can be opened before and after the test to facilitate the removal and placement of the network cable, and the gap opened by the movable protective plate does not affect the operation of the control panel; this structure can effectively block the splashing of fragments that may be generated when the network cable breaks during the test, avoid collisions, scratches and other injuries to the operator, further improve the reliability of protection, and comply with the safety operation specifications of industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the tensile strength testing device for network cable production and processing proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the tensile strength testing device for network cable production and processing proposed by the present invention after removing the movable protective plate; Figure 3 This is an enlarged view of structure A of the tensile strength testing device for network cable production and processing proposed by the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the movable protective plate of the tensile strength testing device for network cable production and processing proposed by the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the lower fixture of the tensile strength testing device for network cable production and processing proposed by the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the upper fixture of the tensile strength testing device for network cable production and processing proposed by the present invention.

[0016] In the figure: 1, base; 2, support column; 3, top plate; 4, hydraulic cylinder; 5, moving plate; 6, lower fixture; 61, servo motor 1; 62, slide; 63, bidirectional screw; 64, lower clamping plate; 7. Upper fixture; 70. Fixed box; 71. Sliding cavity; 72. Upper clamping plate; 73. Screw; 74. Connecting rod; 75. T-shaped shaft; 76. Movable slot; 77. Limit rod; 78. Movable opening; 8. Fix the protective plate; 9. Opening and closing assembly; 91. Servo motor 2; 92. Gear; 93. Limiting hole; 94. T-slot; 95. Rack slot; 96. Limiting strip; 97. Limiting pulley; 98. Mounting seat; 99. Groove; 10. Movable protective plate; 11. Control panel; 12. Notch; 13. Sliding frame; 14. Extensometer; 15. Cap screw; 16. Force sensor. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Reference Figures 1-6 The tensile strength testing device for network cable production and processing includes a base 1. The base 1 serves as the bearing foundation of the device. The top of the base 1 is fixedly connected to a support column 2 by welding or bolting. The support column 2 is used to support a top plate 3. A hydraulic cylinder 4 is fixedly installed on the top of the top plate 3 by bolts. The hydraulic cylinder 4 serves as a driving component, and its telescopic end is fixedly connected to a movable plate 5 through a flange. The movable plate 5 can move in the vertical direction under the drive of the hydraulic cylinder 4, and the movable plate 5 is slidably connected to the support column 2.

[0019] The base 1 is provided with a lower clamp 6 for clamping the left and right outer walls of the network cable, and the bottom of the movable plate 5 is correspondingly provided with an upper clamp 7 for clamping the front and rear outer walls of the network cable. Through the cooperation of the lower clamp 6 and the upper clamp 7, the network cable can be stably clamped; the back outer wall of the base 1 is fixedly connected with a fixed protective plate 8 by bolts, and the top plate 3 is provided with an opening and closing component 9 for driving the movable protective plate 10 to open and close. The fixed protective plate 8 is slidably provided with a movable protective plate 10 that can move up and down in the vertical direction through the opening and closing component 9. The movable protective plate 10 cooperates with the fixed protective plate 8 to form a protective structure, which can protect the internal detection area of ​​the device. Specifically, the lower clamp 6 includes a servo motor 61, a slide 62, a bidirectional lead screw 63 and a pair of symmetrically distributed lower clamping plates 64. The servo motor 61 is fixedly installed on the right outer wall of the base 1 through a motor seat. The slide 62 is opened at the top of the base 1 along the length direction of the base 1. The bidirectional lead screw 63 is rotatably arranged inside the slide 62 through a bearing. One end of the bidirectional lead screw 63 passes through the side wall of the base 1 and is fixedly connected to the output end of the servo motor 61 through a coupling. The bottom of the lower clamping plate 64 is provided with an internal threaded hole adapted to the bidirectional lead screw 63. The lower clamping plate 64 is threadedly connected to the bidirectional lead screw 63, and the two sides of the lower clamping plate 64 slide with the inner wall of the slide 62; when the servo motor 61 is started, it can drive the bidirectional lead screw 63 to rotate, thereby driving a pair of lower clamping plates 64 to move toward or away from each other along the slide 62, thereby clamping or releasing the left and right sides of the network cable. The upper clamp 7 includes a symmetrically distributed fixed box 70, a sliding cavity 71, an upper clamping plate 72, a screw 73, a connecting rod 74, a T-shaped shaft 75 and a movable groove 76. The fixed box 70 is fixedly connected to the bottom of the movable plate 5 by welding. The sliding cavity 71 is opened on the side opposite to the fixed box 70 along the height direction of the fixed box 70. The upper clamping plate 72 is slidably arranged in the sliding cavity 71 through a slider. One end of the screw 73 is rotatably connected to the upper clamping plate 72 through a bearing, one end of the connecting rod 74 is movably connected to the outer wall of the upper clamping plate 72 through a pin shaft, and the other end of the connecting rod 74 is movably connected to the T-shaped shaft 75 through a pin shaft. The movable groove 76 is opened at the bottom of the movable plate 5 along the width direction of the movable plate 5, and the top of the T-shaped shaft 75 slides with the movable groove 76. Furthermore, the screw 73 is arranged on the fixed box 70 near the side of the movable protective plate 10, and connecting rods 74 are symmetrically provided on both sides of the outer wall of the upper clamping plate 72. Limit rods 77 are provided in parallel on both sides of the screw 73. One end of the limit rod 77 is fixedly connected to the upper clamping plate 72, and the other end thereof passes through the outer wall of the fixed box 70 and is slidably connected to the fixed box 70. The limit rod 77 can prevent the upper clamping plate 72 from deflecting during the movement; the screw 73 is connected to the outer wall of the fixed box 70 by a thread, and rotating the screw 73 can drive the upper clamping plate 72 to move along the sliding cavity 71; movable openings 78 for the connecting rod 74 to move are opened on both sides of the fixed box 70, and the movable openings 78 provide space for the connecting rod 74 to swing. The opening and closing assembly 9 includes a servo motor 2 91 fixedly mounted on the top of the top plate 3 through a motor seat, the output end of the servo motor 2 91 is fixedly connected to a gear 92 through a coupling, a pair of symmetrically distributed limiting holes 93 are provided on the front end of the top plate 3, the outer wall of the fixed protective plate 8 is provided with a T-slot 94 in the vertical direction, and the middle end of the inner wall of the movable protective plate 10 is provided with a rack groove 95 meshing with the gear 92 along its height direction, the inner wall of the movable protective plate 10 is fixedly connected to a limiting bar 96 slidably connected to the limiting hole 93, and the limiting bar 96 cooperates with the limiting hole 93 to limit the moving direction of the movable protective plate 10; the outer wall of the movable protective plate 10 close to the fixed protective plate 8 is fixedly installed with a limiting pulley 97 slidably engaged with the T-slot 94 by bolts, and the limiting pulley 97 can reduce the friction between the movable protective plate 10 and the fixed protective plate 8, so that the movement of the movable protective plate 10 is smoother. Mounting seats 98 are symmetrically arranged on both sides of the gear 92. The mounting seats 98 are fixed to the top of the top plate 3 by bolts. A groove 99 is opened on the top of the top plate 3 to facilitate the rotation of the gear 92. The gear 92 is rotatably arranged in the mounting seats 98 through bearings. The mounting seats 98 provide stable support for the gear 92. A control panel 11 is fixed to the front outer wall of the base 1 by bolts. The control panel 11 is electrically connected to the hydraulic cylinder 4, servo motor 1 61, and servo motor 2 91, and is used to control the operation of various components of the device; a gap 12 is provided on the outer wall of the movable protective plate 10 for the control panel 11 to pass through. When the movable protective plate 10 moves up and down, the gap 12 can prevent the movable protective plate 10 from interfering with the control panel 11; a force sensor 16 is bolted between the telescopic end of the hydraulic cylinder 4 and the movable plate 5. The force sensor 16 is electrically connected to the control panel 11, and can detect the tension or pressure output by the hydraulic cylinder 4 in real time, and transmit the detection data to the control panel 11 for display and processing. There are four support columns 2, which are distributed in a rectangular array at the four corners of the top of the base 1. The two support columns 2 near the fixed protective plate 8 are slidably connected with a sliding frame 13, and the sliding frame 13 can move along the height direction of the support column 2; the side of the sliding frame 13 near the detection area is fixed with an extensometer 14 by bolts, and the extensometer 14 is electrically connected to the control panel 11 for detecting the elongation of the network cable during the force process; the part of the sliding frame 13 near the support column 2 is penetrated and threaded with a cap bolt 15. When the sliding frame 13 is moved to the appropriate position, the cap bolt 15 can be tightened to fix the sliding frame 13 on the support column 2.

[0020] It should be noted that the specific models and specifications of the hydraulic cylinder 4, servo motor 1 61, servo motor 2 91, control panel 11, extensometer 14 and force sensor 16 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be repeated. All of them can be powered by external devices and controlled to be turned on and off.

[0021] Working principle: The operator first starts the servo motor 61 through the control panel 11, drives the bidirectional screw 63 to rotate, and makes a pair of lower clamping plates 64 move toward each other along the slide groove 62, clamping the network cable from the left and right sides; then starts the hydraulic cylinder 4 to push the movable plate 5 downward, so that the upper clamp 7 approaches the network cable, and manually rotates the screws 73 on both sides to push the upper clamping plate 72 to move downward along the slide cavity 71. The clamping angle is adjusted through the linkage of the connecting rod 74 and the T-shaped shaft 75, and the network cable is clamped from the front and back sides to achieve full surround fixation of the network cable.

[0022] Next, the servo motor 2 91 is started through the control panel 11 to drive the gear 92 to rotate, and the movable protective plate 10 is driven to move down smoothly along the T-slot 94 of the fixed protective plate 8 by meshing with the rack groove 95 on the inner side of the movable protective plate 10 until it is closed with the fixed protective plate 8 to form a protective cover; then the hydraulic cylinder 4 applies tensile or compressive force according to the set program, the force sensor 16 detects the load data in real time, and the extensometer 14 monitors the deformation of the network cable. All data are collected and processed by the control panel 11. After the detection is completed, each component is reversed and reset.

[0023] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tensile strength testing device for network cable production and processing, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support column (2), the top of the support column (2) is fixedly connected to a top plate (3), the top of the top plate (3) is fixedly installed with a hydraulic cylinder (4), the telescopic end of the hydraulic cylinder (4) is fixedly connected to a movable plate (5), the base (1) is provided with a lower clamp (6) for clamping the network cable to the left and right outer walls, the bottom of the movable plate (5) is provided with an upper clamp (7) for clamping the network cable to the front and back outer walls, the back outer wall of the base (1) is fixedly connected to a fixed protective plate (8), the top plate (3) is provided with an opening and closing component (9), and the fixed protective plate (8) is provided with a movable protective plate (10) that can move up and down through the opening and closing component (9).

2. The tensile strength testing device for network cable production and processing according to claim 1, characterized in that: The lower clamp (6) includes a servo motor (61), a slide (62), a bidirectional lead screw (63) and a pair of symmetrically distributed lower clamping plates (64), wherein the servo motor (61) is fixedly mounted on the right outer wall of the base (1), the slide (62) is opened at the top of the base (1), the bidirectional lead screw (63) is rotatably arranged in the slide (62), one end of which passes through the outer wall of the base (1) and is fixedly connected to the output end of the servo motor (61), the lower clamping plate (64) is threadedly connected to the bidirectional lead screw (63), and the lower clamping plate (64) is slidably matched with the inner wall of the slide (62).

3. The tensile strength testing device for network cable production and processing according to claim 1, characterized in that: The upper clamp (7) includes a symmetrically distributed fixed box (70), a sliding cavity (71), an upper clamping plate (72), a screw (73), a connecting rod (74), a T-shaped shaft (75) and a movable groove (76), wherein the fixed box (70) is fixedly connected to the bottom of the movable plate (5), the sliding cavity (71) is opened on the side opposite to the fixed box (70), the upper clamping plate (72) is slidably arranged in the sliding cavity (71), the screw (73) is rotatably connected to the upper clamping plate (72), one end of the connecting rod (74) is movably connected to the outer wall of the upper clamping plate (72), the other end of the connecting rod (74) is movably connected to the T-shaped shaft (75), the movable groove (76) is opened at the bottom of the movable plate (5), and the T-shaped shaft (75) is slidably matched with the movable groove (76).

4. The tensile strength testing device for network cable production and processing according to claim 3, characterized in that: The screw rod (73) is arranged on the fixed box (70) near the side of the movable protective plate (10), and connecting rods (74) are arranged on both sides of the outer wall of the upper clamping plate (72). Limiting rods (77) are arranged on both sides of the screw rod (73), and the limiting rods (77) pass through the outer wall of the fixed box (70) and are slidably connected. The screw rod (73) is threadedly connected to the outer wall of the fixed box (70), and movable openings (78) for the connecting rod (74) to move are opened on both sides of the fixed box (70).

5. The tensile strength testing device for network cable production and processing according to claim 1, characterized in that: The opening and closing assembly (9) includes a servo motor 2 (91) fixedly mounted on the top of the top plate (3), the output end of the servo motor 2 (91) is fixedly connected to a gear (92) through a coupling, a pair of symmetrically distributed limiting holes (93) are provided on the front end of the top plate (3), a T-shaped slot (94) is provided on the outer wall of the fixed protective plate (8), a rack slot (95) meshing with the gear (92) is provided on the middle end of the inner wall of the movable protective plate (10), a limiting bar (96) slidably connected to the limiting hole (93) is fixedly connected to the inner wall of the movable protective plate (10), and a limiting pulley (97) slidably engaged with the T-shaped slot (94) is fixedly installed on the outer wall of the movable protective plate (10) on the side close to the fixed protective plate (8).

6. The tensile strength testing device for network cable production and processing according to claim 5, characterized in that: Mounting seats (98) are provided on both sides of the gear (92), and a groove (99) is provided on the top of the top plate (3) to facilitate the rotation of the gear (92), and the gear (92) is rotatably arranged in the mounting seats (98).

7. The tensile strength testing device for network cable production and processing according to claim 1, characterized in that: A control panel (11) is fixedly mounted on the front outer wall of the base (1), a notch (12) is provided on the outer wall of the movable protective plate (10) for the control panel (11) to pass through, and a force sensor (16) is connected between the telescopic end of the hydraulic cylinder (4) and the movable plate (5).

8. The tensile strength testing device for network cable production and processing according to claim 1, characterized in that: Four support columns (2) are provided and distributed in a rectangular array. Two support columns (2) close to the fixed protective plate (8) are slidably connected to a sliding frame (13). An extensometer (14) is fixedly installed on the side of the sliding frame (13) close to the detection area. A cap bolt (15) is passed through and threadedly connected to the portion of the sliding frame (13) close to the support column (2).

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