Wire rod anti-biting capability testing device

Abstract

The utility model discloses a device for testing the anti-biting capability of a wire rod. The device comprises a base, a fixing assembly for limiting the wire rod, and an upper occlusion assembly and a lower occlusion assembly which are oppositely arranged, the lower occlusion assembly is arranged on the fixing assembly; the fixing assembly is connected with the base in a position adjustable mode so that the upper meshing assembly and the lower meshing assembly can be arranged in a staggered mode or coaxially arranged in the horizontal direction. A detection space for a wire rod to pass through is formed between the upper occlusion assembly and the lower occlusion assembly; in the vertical direction, the upper occlusion assembly and the lower occlusion assembly can get close to each other or get away from each other so as to change the height of the detection space. According to the utility model, by adjusting the occlusion force, the occlusion duration, the occlusion times and the occlusion position, the anti-occlusion capability of the wire rod is fully detected, and the accuracy and the reliability of a detection result are improved.

Description

Technical Field

[0001] This utility model relates to the field of wire performance testing technology, and in particular to a device for testing the tear resistance of wires. Background Technology

[0002] Power cords, data cables, and other cables are widely used in household appliances and electronic devices. However, in actual use, it is unavoidable that the outer sheath of these cables will be damaged by pets or children chewing on them, leading to short circuits, electric shocks, or even fires. Currently, the outer sheath of these cables is generally made of PVC or rubber, which limits their tear resistance. Furthermore, existing technologies lack devices and methods to fully test the tear resistance of cables, thus failing to provide reliable scientific evidence for improving their tear resistance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a wire tear resistance testing device to improve the reliability and accuracy of wire tear resistance testing.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A wire tear resistance testing device includes a base, a fixing component for limiting the wire, and an upper biting component and a lower biting component disposed opposite to each other.

[0006] The lower engagement component is disposed on the fixing component;

[0007] The fixing component is adjustablely connected to the base so that the upper engagement component and the lower engagement component are misaligned or coaxial in the horizontal direction;

[0008] There is a detection space between the upper engagement component and the lower engagement component for the wire to pass through;

[0009] In the vertical direction, the upper occlusal component and the lower occlusal component can move closer to or further away from each other to change the height of the detection space.

[0010] Furthermore, the upper engagement assembly includes a pressure-applying drive member and an upper engagement member;

[0011] The pressure-applying drive is detachably connected to the upper biting member, and the biting surface of the upper biting member is positioned facing the side where the lower biting assembly is located.

[0012] Furthermore, the testing device also includes a support;

[0013] The bracket is connected to the base;

[0014] The upper engagement assembly also includes a guide assembly;

[0015] One end of the guide assembly is slidably connected to the bracket, and the movable end of the pressure driving member is connected to the upper engagement member through the other end of the guide assembly.

[0016] Furthermore, the testing device also includes a pressure regulating valve;

[0017] The pressure regulating valve is connected to the upper engagement assembly, and the pressure regulating valve is used to change the engagement force between the upper engagement assembly and the lower engagement assembly.

[0018] Furthermore, the testing device also includes a time relay;

[0019] The time relay is electrically connected to the upper occlusal assembly, and the time relay is used to change the occlusal duration of the upper occlusal assembly and the lower occlusal assembly.

[0020] Furthermore, the testing device also includes a counter;

[0021] The sensing end of the counter is disposed opposite to the occlusal surface of the upper occlusal component, or the counter is electrically connected to the upper occlusal component.

[0022] Furthermore, the lower engagement assembly includes a lower engagement member and a pressure plate arranged coaxially, the lower engagement member being detachably connected to the pressure plate, and the pressure plate being detachably connected to the fixed base.

[0023] Furthermore, the lower occlusal assembly includes an lower occlusal member and a force sensor;

[0024] The lower engagement member is detachably connected to the force sensor, and the force sensor is disposed on the fixing component;

[0025] The force sensor is electrically connected to the pressure regulating valve.

[0026] Furthermore, the fixing component includes a fixing base and a first limiting component and a second limiting component for limiting the wire and being disposed opposite to each other;

[0027] The first limiting component and the second limiting component are disposed on the fixed base, and the fixed base is tunably connected to the base.

[0028] The first limiting component and the second limiting component are respectively disposed at both ends of the length direction of the fixed base or at both ends of the width direction of the fixed base.

[0029] Furthermore, the testing device also includes safety protection components;

[0030] The safety protection component covers the upper and lower occlusal components and encloses them to form a test cavity;

[0031] The safety protection component includes a sensor and an openable safety door, the safety door being located on one side of the test chamber;

[0032] When the safety door is placed on one side of the test chamber, the safety door is positioned opposite to the sensing end of the sensor, and the sensor is electrically connected to the upper engagement assembly.

[0033] The beneficial effects of this utility model are as follows: by setting an upper biting component and a lower biting component, the action of a pet or human biting the cable is simulated; and a fixing component is set to change the biting position of the upper biting component and the lower biting component on the cable, thereby conducting tear resistance tests on the cable from different angles and improving the accuracy and reliability of the cable tear resistance test results. Attached Figure Description

[0034] Figure 1 This is a partial structural schematic diagram of the testing device in this utility model;

[0035] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0036] Figure 3 for Figure 1 The front view;

[0037] Figure 4 This is a schematic diagram of the testing device in Embodiment 1 of this utility model;

[0038] Figure 5 This is a schematic diagram of the testing device in Embodiment 2 of this utility model;

[0039] Label Explanation:

[0040] 1. Base;

[0041] 2. Wire;

[0042] 3. Fixing component; 31. Fixing base; 32. First limiting component; 321. Limiting notch; 322. Upper limiting block; 323. Lower limiting block; 33. Second limiting component; 34. First locking element; 35. Second locking element;

[0043] 4. Upper engagement assembly; 41. Pressure driving component; 42. Upper engagement component; 43. Guide assembly; 431. Connector; 432. Guide rod; 433. Guide sleeve;

[0044] 5. Lower bite assembly; 51. Lower bite element; 52. Pressure plate; 53. Force sensor;

[0045] 6. Pressure regulating valve; 7. Bracket; 8. Time relay; 9. Counter;

[0046] 10. Safety protection components; 101. Sensors; 102. Safety door; 1021. Through groove; 103. Protective back panel; 104. Protective side panel; 1041. Slide groove. Detailed Implementation

[0047] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0048] Please refer to Figures 1-5 A wire tear resistance testing device includes a base 1, a fixing component 3 for limiting the wire 2, and an upper biting component 4 and a lower biting component 5 disposed opposite to each other. The lower biting component 5 is disposed on the fixing component 3. The fixing component 3 is adjustablely connected to the base 1 so that the upper biting component 4 and the lower biting component 5 are staggered or coaxially disposed in the horizontal direction. There is a detection space between the upper biting component 4 and the lower biting component 5 for the wire 2 to pass through. In the vertical direction, the upper biting component 4 and the lower biting component 5 can move closer to each other or further away from each other to change the height of the detection space. The biting surfaces of the upper biting component 4 and the lower biting component 5 are at least partially opposite to each other in the vertical direction.

[0049] It is understandable that by setting the upper biting component 4 and the lower biting component 5, the action of a pet or human biting the cable 2 is simulated; and by setting the fixing component 3, the biting position of the upper biting component 4 and the lower biting component 5 on the cable 2 is changed, thereby conducting tear resistance tests on the cable 2 from different angles and improving the accuracy and reliability of the tear resistance test results of the cable 2.

[0050] In some embodiments, the upper biting assembly 4 includes a pressure-applying drive 41 and an upper biting member 42; the pressure-applying drive 41 is detachably connected to the upper biting member 42, and the biting surface of the upper biting member 42 is disposed facing the side where the lower biting assembly 5 is located. Preferably, the pressure-applying drive 41 is a linear cylinder. By controlling the position of the upper biting member 42 through the pressure-applying drive 41, the upper biting member 42 and the lower biting assembly 5 jointly apply pressure to the wire 2, simulating the action and force of an animal or human biting the wire 2.

[0051] In some embodiments, the testing apparatus further includes a pressure regulating valve 6; the pressure regulating valve 6 is connected to the upper engagement assembly 4, and is used to change the engagement force between the upper engagement assembly 4 and the lower engagement assembly 5. Specifically, the pressure regulating valve 6 is connected to the pressure driving member 41, and is used to change the application pressure of the pressure driving member 41 through the pressure regulating valve 6, thereby controlling the engagement force between the upper engagement member 42 and the lower engagement assembly 5, and fully detecting the degree of damage to the wire 2 caused by various engagement forces.

[0052] In some embodiments, the testing device further includes a support 7; the support 7 is connected to the base 1; the upper engagement assembly 4 further includes a guide assembly 43; one end of the guide assembly 43 is slidably connected to the support 7, and the movable end of the pressure driving member 41 is connected to the upper engagement member 42 through the other end of the guide assembly 43. The guide assembly 43 is provided to improve the stability of the upper engagement member 42 during the lifting process and ensure the reliability of the test results. Specifically, the guide assembly 43 includes a connector 431, a guide rod 432, and a guide sleeve 433; the guide sleeve 433 is disposed on the top of the support 7, the pressure driving member 41 is connected to the upper engagement member 42 through the connector 431, one end of the guide rod 432 is connected to the connector 431, and the other end of the guide rod 432 is slidably connected to the guide sleeve 433.

[0053] In some embodiments, the testing apparatus further includes a time relay 8; the time relay 8 is electrically connected to the upper biting component 4, and is used to change the biting duration of the upper biting component 4 and the lower biting component 5. Specifically, the time relay 8 is electrically connected to the pressure driving member 41, and by controlling the holding duration of the pressure driving member 41, the biting duration of the upper biting component 4 and the lower biting component 5 is controlled, fully simulating various biting durations of humans or animals, and improving the reliability of the test results. It is worth noting that the holding duration refers to the time from the start of contact between the upper biting component 4 and the wire to the end of the time from the complete separation of the upper biting component 4 from the wire.

[0054] In some embodiments, the testing device further includes a counter 9; the sensing end of the counter 9 is disposed opposite to the biting surface of the upper biting component 4, or the counter 9 is electrically connected to the upper biting component 4. The counter 9 is configured to detect the number of bites between the upper biting component 4 and the lower biting component 5, and after the number of bites reaches a preset value, control the upper biting component 4 to stop the biting action, the purpose of which is to fully detect the tear resistance of the wire 2 and improve the reliability of the test results.

[0055] In one embodiment, the lower bite assembly 5 includes a coaxially arranged lower bite member 51 and a pressure plate 52. The lower bite member 51 is detachably connected to the pressure plate 52, and the pressure plate 52 is detachably connected to the fixing base 31 to facilitate the replacement of the lower bite member 51 with different bite teeth. Before conducting the bite test, the lower bite assembly 5 is disassembled, and a force sensor is placed at the assembly position of the lower bite assembly 5. The force sensor cooperates with the pressure driving member 41 to detect the pressure of the pressure driving member 41, and the pressure of the pressure driving member 41 is adjusted by the pressure regulating valve 6 until the pressure of the pressure driving member 41 is adjusted to the appropriate level. After that, the force sensor is removed and the lower bite assembly 5 is assembled.

[0056] In another embodiment, the lower occlusal assembly 5 includes a lower occlusal member 51 and a force sensor 53; the lower occlusal member 51 and the force sensor 53 are detachably connected, the force sensor 53 is disposed on the fixing assembly 3, and the force sensor 53 is electrically connected to the pressure regulating valve 6. Specifically, the upper occlusal member 42 is detachably connected to the connecting member 431, and the lower occlusal member 51 is detachably connected to the force sensor 53, for replacing the upper occlusal member 42 and the lower occlusal member 51 with different types of occlusal teeth to simulate different occlusal conditions. The force sensor 53 is used to detect the occlusal force of the upper occlusal member 42 and the lower occlusal member 51, and then controls the pressure applied by the pressure regulating valve 6 to control the pressure applied by the pressure driving member 41 to meet different occlusal force requirements.

[0057] In some embodiments, the fixing component 3 includes a fixing base 31 and a first limiting component 32 and a second limiting component 33 for limiting and opposing the wire 2; the first limiting component 32 and the second limiting component 33 are disposed on the fixing base 31, and the fixing base 31 is positionally adjustable to the base 1; the first limiting component 32 and the second limiting component 33 are respectively disposed at both ends in the length direction or at both ends in the width direction of the fixing base 31. By adjusting the position of the fixing base 31, the upper engaging member 42 and the lower engaging member 51 can be misaligned. Preferably, the first limiting component 32 and the second limiting component 33 are respectively disposed at both ends in the length direction of the fixing base 31. Furthermore, the fixing component 3 also includes a first locking member 34 and a second locking member 35. The first locking member 34 and the second locking member 35 are respectively disposed at both ends of the fixing base 31 along its length. When the first locking member 34 and the second locking member 35 are in a relaxed state, the fixing base 31 can move relative to the first locking member 34 and the second locking member 35 to freely adjust the position of the fixing base 31 on the base 1. After the fixing base 31 is adjusted into place, the first locking member 34 and the second locking member 35 are respectively locked by corresponding bolts, so that the first locking member 34 and the second locking member 35 apply pressure to the fixing base 31, so that the relative position of the fixing base 31 and the base 1 is maintained.

[0058] In some embodiments, the first limiting component 32 has a limiting notch 321 for limiting the wire 2, and the axis of the limiting notch 321 passes through the detection space. Specifically, the first limiting component 32 includes an upper limiting block 322 and a lower limiting block 323, each having a limiting notch 321, and the two limiting notches 321 are arranged opposite to each other. The upper limiting block 322 and the lower limiting block 323 are connected by screws so that the distance between the upper limiting block 322 and the lower limiting block 323 is adjustable, facilitating the picking and placing of the wire 2. Preferably, the second limiting component 33 has the same structure as the first limiting component 32, and will not be described again here.

[0059] In some embodiments, the testing device further includes a safety protection component 10; the safety protection component 10 covers the upper biting component 4 and the lower biting component 5 and encloses them to form a test cavity; the safety protection component 10 includes a sensor 101 and an openable safety door 102, the safety door 102 being located on one side of the test cavity; when the safety door 102 covers one side of the test cavity, the safety door 102 is disposed opposite to the sensing end of the sensor 101, and the sensor 101 is electrically connected to the pressure driving component 41 of the upper biting component 4. Specifically, the safety protection component 10 also includes a protective back plate 103 and two opposing protective side plates 104. The protective back plate 103, the two protective side plates 104, and the safety door 102 together form a test chamber. The safety door 102 is slidably connected to the two protective side plates 104. A sensor 101 is installed on one of the protective side plates 104 near the safety door 102 to sense the connection status between the safety door 102 and the protective test plate. When the sensor 101 detects the safety door 102, the pressure driving component 41 can be activated; when the sensor 101 does not detect the safety door 102, the pressure driving component 41 cannot be activated, thus achieving a safety protection function. Preferably, the safety door 102 is made of transparent material to facilitate observation of the engagement status of the upper engagement component 4 and the lower engagement component 5. Optionally, the sensor 101 can be a proximity switch, a photoelectric sensor, or a pressure sensor.

[0060] Embodiment 1 of this utility model is as follows:

[0061] A wire tear resistance testing device includes a base 1, a fixing component 3 for limiting the wire 2, and an upper biting component 4 and a lower biting component 5 disposed opposite to each other; the lower biting component 5 is disposed on the fixing component 3; the fixing component 3 is tunably connected to the base 1 so that the upper biting component 4 and the lower biting component 5 are staggered or coaxially disposed in the horizontal direction; there is a detection space between the upper biting component 4 and the lower biting component 5 for the wire 2 to pass through; in the vertical direction, the upper biting component 4 and the lower biting component 5 can move closer to each other or further away from each other to change the height of the detection space.

[0062] In this embodiment, the upper engagement assembly 4 includes a pressure driving member 41 and an upper engagement member 42; the pressure driving member 41 and the upper engagement member 42 are detachably connected in a transmission manner, and the engagement surface of the upper engagement member 42 is disposed facing the side where the lower engagement assembly 5 is located. Preferably, the pressure driving member 41 is a linear cylinder.

[0063] In this embodiment, the testing device further includes a pressure regulating valve 6; the pressure regulating valve 6 is connected to the upper engagement assembly 4, and is used to change the engagement force between the upper engagement assembly 4 and the lower engagement assembly 5. Specifically, the pressure regulating valve 6 is connected to the pressure application drive component 41.

[0064] In this embodiment, the testing device further includes a bracket 7; the bracket 7 is connected to the base 1; the upper engagement assembly 4 further includes a guide assembly 43; one end of the guide assembly 43 is slidably connected to the bracket 7, and the movable end of the pressure driving member 41 is connected to the upper engagement member 42 through the other end of the guide assembly 43. Specifically, the guide assembly 43 includes a connector 431, a guide rod 432, and a guide sleeve 433; the guide sleeve 433 is disposed on the top of the bracket 7, the pressure driving member 41 is connected to the upper engagement member 42 through the connector 431, one end of the guide rod 432 is connected to the connector 431, and the other end of the guide rod 432 is slidably connected to the guide sleeve 433.

[0065] In this embodiment, the testing device further includes a time relay 8; the time relay 8 is electrically connected to the upper engagement component 4, and the time relay 8 is used to change the engagement duration of the upper engagement component 4 and the lower engagement component 5. Specifically, the time relay 8 is electrically connected to the pressure driving component 41.

[0066] In this embodiment, the testing device also includes a counter 9; the counter 9 is electrically connected to the pressure driving member 41 of the upper engagement assembly 4.

[0067] In this embodiment, the lower bite assembly 5 includes a coaxially arranged lower bite member 51 and a pressure plate 52. The lower bite member 51 and the pressure plate 52 are detachably connected, and the pressure plate 52 is detachably connected to the fixing base 31 to facilitate the replacement of the lower bite member 51 with different bite teeth. Before performing the bite test, the lower bite assembly 5 is disassembled, and a force sensor is placed at the assembly position of the lower bite assembly 5. The force sensor cooperates with the pressure driving member 41 to detect the pressure of the pressure driving member 41, and the pressure of the pressure driving member 41 is adjusted by the pressure regulating valve 6 until the pressure of the pressure driving member 41 is adjusted to the appropriate level. After that, the force sensor is removed and the lower bite assembly 5 is assembled. Preferably, in this embodiment, the height of the force sensor used for testing the pressure is equal to the total height of the lower bite assembly 5.

[0068] In this embodiment, the fixing component 3 includes a fixing base 31 and a first limiting component 32 and a second limiting component 33 for limiting and opposing the wire 2; the first limiting component 32 and the second limiting component 33 are disposed on the fixing base 31, and the fixing base 31 is tunably connected to the base 1; the first limiting component 32 and the second limiting component 33 are respectively disposed at both ends in the length direction or at both ends in the width direction of the fixing base 31. Preferably, the first limiting component 32 and the second limiting component 33 are respectively disposed at both ends in the length direction of the fixing base 31. Furthermore, the fixing component 3 also includes a first locking member 34 and a second locking member 35. The first locking member 34 and the second locking member 35 are respectively disposed at both ends of the fixing base 31 along its length. The fixing base 31 can move relative to the first locking member 34 and the second locking member 35 to freely adjust the position of the fixing base 31 on the base 1. After the fixing base 31 is adjusted into place, the first locking member 34 and the second locking member 35 are respectively locked by corresponding bolts, so that the first locking member 34 and the second locking member 35 apply pressure to the fixing base 31, thereby maintaining the relative position of the fixing base 31 and the base 1.

[0069] In this embodiment, the first limiting component 32 has a limiting notch 321 for limiting the wire 2, and the axis of the limiting notch 321 passes through the detection space. Specifically, the first limiting component 32 includes an upper limiting block 322 and a lower limiting block 323. The upper limiting block 322 has the limiting notch 321, and the upper limiting block 322 and the lower limiting block 323 are connected by screws. Preferably, the second limiting component 33 has the same structure as the first limiting component 32, and will not be described again here.

[0070] In this embodiment, the testing device further includes a safety protection component 10; the safety protection component 10 covers the upper biting component 4 and the lower biting component 5 and encloses them to form a testing cavity; the safety protection component 10 includes a sensor 101 and an openable safety door 102, the safety door 102 being located on one side of the testing cavity; when the safety door 102 covers one side of the testing cavity, the safety door 102 is positioned opposite to the sensing end of the sensor 101, and the sensor 101 is electrically connected to the pressure driving component 41 of the upper biting component 4. Specifically, the safety protection assembly 10 also includes a protective back plate 103 and two opposing protective side plates 104; the protective back plate 103, the two protective side plates 104, and the safety door 102 together form a test chamber. The safety door 102 is slidably connected to the ends of the two protective side plates 104 away from the protective back plate 103, that is, the ends of the protective side plates 104 away from the protective back plate 103 are provided with a groove 1041, and in the vertical projection area, the groove 1041 is located outside the bracket 7, so that the safety door 102 can be pulled out or inserted from the top of the bracket 7 into the groove 1041. Preferably, the safety door 102 is made of transparent material. Preferably, the sensing element 101 is a photoelectric sensor, and further, the sensing element 101 is an infrared slotted switch. Correspondingly, the sensor 101 is disposed at the bottom of the protective side plate 104, and the groove of the sensor 101 is aligned with the lower end of the sliding groove of the protective side plate 104, so that the safety door 102 slides within the groove of the sensor 101 and the sliding groove 1041 of the protective side plate 104. A through groove 1021 is provided in the middle of the safety door 102 for the sensor 101 to sense its position. That is, when the through groove 1021 is directly opposite the sensor 101, it indicates that the safety door 102 is installed in place and can perform a bite simulation operation. Correspondingly, the two sides of the safety door 102 distributed along the height direction are respectively coated with a black coating 105, and the width of the area coated with the black coating 105 in the width direction of the safety door 102 should be greater than the width of the sensing end of the sensor 101, so that the sensor 101 can sense the position of the safety door 102 and can be triggered when the sensor 101 is directly opposite the through groove 1021.

[0071] In this embodiment, the base 1 is also provided with a start switch and an emergency stop switch, which are electrically connected to the pressure driving component 41.

[0072] Embodiment two of this utility model is as follows:

[0073] The difference between this embodiment and Embodiment 1 is that the structure of the lower occlusal component 5 is different.

[0074] In this embodiment, the lower biting assembly 5 includes a lower biting member 51 and a force sensor 53; the lower biting member 51 and the force sensor 53 are detachably connected, the force sensor 53 is disposed on the fixing assembly 3, and the force sensor 53 is electrically connected to the pressure regulating valve 6. Specifically, the upper biting member 42 is detachably connected to the connecting member 431, and the lower biting member 51 is detachably connected to the force sensor 53. Preferably, the force sensor 53 is a pressure sensor.

[0075] The working principle of this utility model is as follows:

[0076] Based on the required test results, the engagement pressure of the pressure regulating valve 6, the engagement number of the counter 9, and the control engagement duration of the pressure driving component 41 are preset via the time relay 8.

[0077] Adjust the position of the fixing seat 31, that is, adjust the relative position of the upper engaging member 42 and the lower engaging member 51, and press the fixing seat 31 tightly through the first locking member 34 and the second locking member 35;

[0078] The two ends of the wire 2 are fixed by the first limiting component 32 and the second limiting component 33, and the wire 2 is located on the biting surface of the lower biting member 51. The safety door 102 is closed, and the pressure driving member 41 is activated, so that the pressure driving member 41 drives the upper biting member 42 to approach the lower biting member 51, simulating the biting action of a person or animal on the wire 2.

[0079] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for testing the tear resistance of wires, characterized in that, It includes a base, a fixing component for limiting the wire, and an upper engagement component and a lower engagement component arranged opposite to each other; The lower engagement component is disposed on the fixing component; The fixing component is adjustablely connected to the base so that the upper engagement component and the lower engagement component are misaligned or coaxial in the horizontal direction; There is a detection space between the upper engagement component and the lower engagement component for the wire to pass through; In the vertical direction, the upper occlusal component and the lower occlusal component can move closer to or further away from each other to change the height of the detection space.

2. The wire tear resistance testing device according to claim 1, characterized in that, The upper engagement assembly includes a pressure-applying drive component and an upper engagement component; The pressure-applying drive is detachably connected to the upper biting member, and the biting surface of the upper biting member is positioned facing the side where the lower biting assembly is located.

3. The wire tear resistance testing device according to claim 2, characterized in that, The testing device also includes a support frame; The bracket is connected to the base; The upper engagement assembly also includes a guide assembly; One end of the guide assembly is slidably connected to the bracket, and the movable end of the pressure driving member is connected to the upper engagement member through the other end of the guide assembly.

4. The wire tear resistance testing device according to claim 1, characterized in that, The testing device also includes a pressure regulating valve; The pressure regulating valve is connected to the upper engagement assembly, and the pressure regulating valve is used to change the engagement force between the upper engagement assembly and the lower engagement assembly.

5. The wire tear resistance testing device according to claim 1, characterized in that, The testing device also includes a time relay; The time relay is electrically connected to the upper occlusal assembly, and the time relay is used to change the occlusal duration of the upper occlusal assembly and the lower occlusal assembly.

6. The wire tear resistance testing device according to claim 1, characterized in that, The testing device also includes a counter; The sensing end of the counter is disposed opposite to the occlusal surface of the upper occlusal component, or the counter is electrically connected to the upper occlusal component.

7. The wire tear resistance testing device according to claim 1, characterized in that, The lower engagement assembly includes a lower engagement member and a pressure plate arranged coaxially. The lower engagement member is detachably connected to the pressure plate, and the pressure plate is detachably connected to the fixing assembly.

8. The wire tear resistance testing device according to claim 4, characterized in that, The lower occlusal assembly includes a lower occlusal member and a force sensor; The lower engagement member is detachably connected to the force sensor, and the force sensor is disposed on the fixing component; The force sensor is electrically connected to the pressure regulating valve.

9. The wire tear resistance testing device according to claim 1, characterized in that, The fixing assembly includes a fixing base and a first limiting assembly and a second limiting assembly for limiting the wire and being disposed opposite to each other; The first limiting component and the second limiting component are disposed on the fixed base, and the fixed base is tunably connected to the base. The first limiting component and the second limiting component are respectively disposed at both ends of the length direction of the fixed base or at both ends of the width direction of the fixed base.

10. The wire tear resistance testing device according to claim 1, characterized in that, The testing device also includes safety protection components; The safety protection component covers the upper and lower occlusal components and encloses them to form a test cavity; The safety protection component includes a sensor and an openable safety door, the safety door being located on one side of the test chamber; When the safety door is placed on one side of the test chamber, the safety door is positioned opposite to the sensing end of the sensor, and the sensor is electrically connected to the upper engagement assembly.

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