Device and method for testing electrostatic safety performance of mining non-metallic material
By designing protective boxes, limiting components, fixing components, adjustment components and carrying components, the problem of lack of protection and inability to store the test head during the carrying process of the electrostatic test device, effectively protecting and convenient portability of the tester and test head.
Patent Information
- Application Number
- CN202411853757.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-03-07
AI Technical Summary
The existing electrostatic test devices lack protective structure during carrying, which are easily damaged by impact, and cannot effectively store the electrostatic test head, resulting in the test head floating around and easily damaged.
A test device for electrostatic safety performance of non-metallic materials for mining is designed, and a protective box protection tester is used to set up limit components and fix components to fix the multi-section telescopic rod and test head. The adjustment components and carrying components are used to achieve convenient removal and storage of the tester, as well as convenient portability.
It effectively prevents the tester from being damaged by impact during carrying, prevents the static test head from floating around, and improves the portability stability and use safety of the device.
Smart Images
Figure CN119574679A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electrostatic testing devices, in particular to a testing device and method for the electrostatic safety performance of non-metallic materials used in mining. Background Art
[0002] Electrostatic detection is the measurement of electrostatic potential or electrostatic charge using appropriate instruments and methods, and the measurement of electrostatic potential on the surface of charged objects (metal objects, insulators, liquids). It can be divided into contact measurement and non-contact measurement. ① Contact measurement. The instrument is directly connected to the charged object to be measured ( Figure 1 ). In the figure, C1 is the capacitance of the charged body to the ground, and C2 is the input capacitance of the instrument. The instrument is required to have high input resistance and low input capacitance, otherwise the electrostatic potential of the measured object will drop significantly due to charge leakage or capacitor charging. ② Non-contact measurement. The instrument is connected to the detection electrode close to the charged body to be measured ( Figure 2 ). In the figure, C3 is the capacitance between the detection electrode and the charged body, and its value should be much larger than C2, so that the meter reading is close to the potential of the charged body surface being measured.
[0003] However, the electrostatic testing device in the prior art cannot store the electrostatic testing head during actual use. The electrostatic testing head is easily damaged when it is carried. In addition, the electrostatic testing device does not have a protective structure during actual use. It is easily damaged by direct impact when it is carried. In view of the above problems, a testing device and method for the electrostatic safety performance of non-metallic materials used in mining are provided. Summary of the invention
[0004] The purpose of the present invention is to provide a test device and method for the electrostatic safety performance of non-metallic materials for mining, so as to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a test device and method for the electrostatic safety performance of non-metallic materials for mining, comprising a protective box, the inner cavity of the protective box is slidably plugged with a tester, the top of the inner cavity of the protective box is fixedly embedded with tempered glass, both sides of the inner cavity of the protective box are provided with limit assemblies, and the two limit assemblies are respectively fixedly connected to the two sides of the tester, a frame is provided on one side of the outer wall of the protective box, and the inner cavity of the frame is provided with a fixing assembly, the bottom end of the tester is provided with a wiring harness, the other end of the wiring harness is provided with a multi-section telescopic rod, and the other end of the multi-section telescopic rod is provided with a test head, the test head is electrically connected to the wiring harness, the top of the inner cavity of the protective box is provided with an adjustment assembly, the rear side of the protective box is provided with a carrying assembly, and the top of the tester is provided with a display screen.
[0005] Preferably, the adjustment assembly includes a fixed cylinder, a screw, a knob, a telescopic cylinder, a telescopic rod, a connecting assembly, a first spring and an extrusion plate. The fixed cylinder is fixedly embedded in the rear side of the inner cavity of the protective box, the screw is threaded in the inner cavity of the fixed cylinder and is rotatably connected to the rear side of the tester through a bearing, the knob fixes the rear end of the screw, the telescopic cylinder is arranged on the rear side of the inner cavity of the protective box, the telescopic rod can be slidably inserted in the inner cavity of the telescopic cylinder, the extrusion plate is arranged at the front end of the telescopic rod and is sleeved on the outside of the screw, the first spring is sleeved on the outside of the telescopic rod and the telescopic cylinder, and the connecting assembly is arranged in the inner cavity of the telescopic cylinder and is fixedly connected to the outer wall of the telescopic rod.
[0006] Preferably, the connecting assembly includes a connecting groove and a connecting block, the connecting groove is opened on the inner wall of the telescopic cylinder, the connecting block can be slidably embedded in the inner cavity of the connecting groove and fixedly connected to the outer wall of the telescopic rod, the inner cavity of the connecting groove and the outer wall of the connecting block are adapted to fit together and are both dovetail-shaped.
[0007] Preferably, the carrying assembly includes a fixed plate, a mounting plate, a lead screw, a turntable, an insert plate, a second spring, a movable plate and a socket, the fixed plate is arranged at the bottom end of the protective box, the mounting plate is arranged at the bottom end of the protective box, the lead screw is rotatably connected to the middle part of the mounting plate through a bearing, the turntable is fixedly connected to one end of the lead screw, the movable plate is screwed to the outer wall of the lead screw, the insert plate is fixedly connected to the movable plate, the socket is opened on the fixed plate, and the second spring is sleeved on the outside of the lead screw.
[0008] Preferably, the outer wall circumference of the turntable is provided with anti-slip edges.
[0009] Preferably, the limiting assembly includes a limiting groove and a limiting block, the limiting groove is opened on one side of the inner wall of the protection box, and the limiting block is slidably embedded in the inner cavity of the limiting groove and fixedly connected to the tester.
[0010] Preferably, the inner cavity of the limiting groove and the outer wall of the limiting block are matched and both are dovetail-shaped.
[0011] Preferably, the fixing assembly includes a frame, a screw rod, a guide rod, a slide plate, a clamping plate, a bracket and a driving assembly, the frame is arranged on one side of the outer wall of the protective box, one end of the screw rod is rotatably connected to the bottom end of the inner cavity of the frame through a bearing, the other end of the screw rod extends to the top of the frame, the guide rod is arranged in the inner cavity of the frame and is parallel to the screw rod, the two slide plates are respectively screwed on the upper and lower sides of the outer wall of the screw rod and are respectively slidably sleeved on the upper and lower sides of the outer wall of the guide rod, the two clamping plates are respectively arranged on the two slide plates and the sides of the two clamping plates close to each other are inclined from both sides to the middle, the bracket is arranged on the top of the frame, and the driving assembly is arranged in the inner cavity of the bracket and fixedly sleeved on the outer wall of the screw rod.
[0012] Preferably, the drive assembly includes a worm, a worm wheel and a handle, one end of the worm is rotatably connected to the rear side of the inner cavity of the bracket through a bearing, the other end of the worm extends to the front end of the bracket and is fixedly connected to the handle, and the worm wheel is meshed with the worm.
[0013] The test method for the electrostatic safety performance of non-metallic materials used in mining includes the following steps: S1. Rotate the knob to drive the screw to rotate. Under the action of the rotational force of the outer wall of the screw, when the screw rotates, the tester is pushed into the inner cavity of the protective box under the limiting action of the limiting groove and the limiting block, so that the multi-section telescopic rod is extended, and the test head is in contact with the material to be tested, and the electrostatic safety performance test is performed; S2, rotating the turntable, so that the turntable drives the lead screw to rotate, so that the movable plate drives the plug plate to slide toward the fixed plate, so that the plug plate is inserted into the inner cavity of the slot, and then the plug plate is wrapped around the belt, which can facilitate the carrying of the device; S3. Rotate the knob to drive the worm to rotate, and then drive the worm wheel to drive the lead screw to rotate, so that the threads on the upper and lower sides of the outer wall of the lead screw generate relative thread rotation force, so that the two slides respectively drive the two clamping plates to slide toward the middle of the inner cavity of the frame under the limiting action of the guide rod to clamp and fix the multi-section telescopic rod and the test head to facilitate the storage of the multi-section telescopic rod and the test head for easy carrying.
[0014] Compared with the prior art, the present invention has the following beneficial effects: The protection box can protect the tester and prevent it from being damaged by impact during carrying. This solves the problem that the electrostatic tester does not have a protective structure during actual use and is easily damaged by direct impact during carrying. By setting the fixing component, the multi-section telescopic rod and the test head can be fixed, so as to prevent the multi-section telescopic rod and the test head from being entangled in the process of carrying because they do not have the fixing component, thereby solving the problem that the electrostatic test head of the prior art cannot be stored in the actual use process, and the electrostatic test head is easily damaged when being carried because of the electrostatic test head floating around; By adjusting the setting of the component, the tester can be extended out of the inner cavity of the protective box, so that the tester can be easily taken out and stored. The operation is simple and easy to use. By setting the carrying component, the plug board can be wrapped around the belt, which makes it easier to carry the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the test head of the present invention; Figure 3It is a rear view of the present invention; Figure 4 It is a structural schematic diagram of the telescopic assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the fixing assembly of the present invention; Figure 6 It is a front cross-sectional view of the telescopic assembly of the present invention; Figure 7 For the present invention Figure 4 Enlarge him at A; Figure 8 It is a schematic structural diagram of the spring of the present invention.
[0016] In the figure: 1. protective box; 2. tempered glass; 3. tester; 4. limit groove; 5. limit block; 6. display screen; 7. wiring harness; 8. multi-section telescopic rod; 9. test head; 10. telescopic cylinder; 11. telescopic rod; 12. connecting groove; 13. connecting block; 14. first spring; 15. extrusion plate; 16. fixed cylinder; 17. screw; 18. knob; 19. fixed plate; 20. mounting plate; 21. lead screw; 22. turntable; 23. plug plate; 24. second spring; 25. jack; 26. rack; 27. lead screw; 28. guide rod; 29. slide plate; 30. clamping plate; 31. bracket; 32. worm; 33. handle; 34. worm gear; 35. moving plate. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 technical personnel in this field without creative work are within the scope of protection of the present invention.
[0018] See also Figures 1 to 8The present invention provides a technical solution: a device and method for testing the electrostatic safety performance of non-metallic materials used in mining, comprising a protective box 1, the inner cavity of which is slidably plugged with a tester 3, through the setting of the protective box 1, protection of the tester 3 can be achieved to prevent the tester 3 from being damaged by impact during carrying, thereby solving the problem that the electrostatic testing device does not have a protective structure during actual use and is easily damaged by direct impact during carrying, a tempered glass 2 is fixedly embedded at the top of the inner cavity of the protective box 1, both sides of the inner cavity of the protective box 1 are provided with limit assemblies, the two limit assemblies are fixedly connected to the two sides of the tester 3 respectively, a frame 26 is provided on one side of the outer wall of the protective box 1, the inner cavity of the frame 26 is provided with a fixing assembly, through the setting of the fixing assembly, the multi-section telescopic rod 8 and the test head 9 can be fixed to prevent the multi-section telescopic rod 8 from being damaged by impact. The test head 9 does not have a fixing component and is entangled in the process of carrying. This solves the problem that the electrostatic test head 9 of the prior art cannot be stored in the actual use process, and the electrostatic test head 9 is easily damaged when it is carried. A wiring harness 7 is provided at the bottom end of the tester 3, and a multi-section telescopic rod 8 is provided at the other end of the wiring harness 7. A test head 9 is provided at the other end of the multi-section telescopic rod 8. The test head 9 is electrically connected to the wiring harness 7. An adjusting component is provided at the top of the inner cavity of the protective box 1. Through the setting of the adjusting component, the tester 3 can be extended out of the inner cavity of the protective box 1, so that the tester 3 can be taken out and stored conveniently. The operation is simple and easy to use. A carrying component is provided on the rear side of the protective box 1. Through the setting of the carrying component, the plug board 23 can be wrapped around the belt, which can facilitate the carrying of the device. A display screen 6 is provided at the top of the tester 3.
[0019] In this embodiment, the adjustment component includes a fixed cylinder 16, a screw 17, a knob 18, a telescopic cylinder 10, a telescopic rod 11, a connecting component, a first spring 14 and an extrusion plate 15. The fixed cylinder 16 is fixedly embedded in the rear side of the inner cavity of the protective box 1, the screw 17 is screwed in the inner cavity of the fixed cylinder 16 and is rotatably connected to the rear side of the tester 3 through a bearing, the knob 18 fixes the rear end of the screw 17, the telescopic cylinder 10 is arranged at the rear side of the inner cavity of the protective box 1, the telescopic rod 11 can be slidably inserted in the inner cavity of the telescopic cylinder 10, the extrusion plate 15 is arranged at the front end of the telescopic rod 11 and is sleeved on the outside of the screw 17, the first spring 14 is sleeved on the outside of the telescopic rod 11 and the telescopic cylinder 10, the connecting component is arranged in the inner cavity of the telescopic cylinder 10 and is fixedly connected to the outer wall of the telescopic rod 11, the knob 18 is rotated to make the knob 18 drive the screw 17 to rotate, because the screw 17 is screwed to the inner cavity of the fixed tube 16. Therefore, when the screw 17 rotates, the tester 3 can be extended or retracted along a straight line to the inner cavity of the protective box 1 under the limiting action of the limiting groove 4 and the limiting block 5, which is convenient for taking out and storing the tester 3. The operation is simple and easy to use. After the tester 3 is stored in the inner cavity of the protective box 1, it squeezes the squeezing plate 15, and the squeezing plate 15 squeezes the telescopic rod 11, so that the telescopic rod 11 shrinks to the inner cavity of the telescopic tube 10, and the first spring 14 is squeezed to produce corresponding elastic deformation, and then generates corresponding elastic force. Under the elastic force of the spring, the squeezing plate 15 can squeeze the tester 3, and then the test pulls the screw 17, so that the pressure and friction between the outer wall thread of the screw 17 and the inner wall thread of the fixed tube 16 increase, thereby preventing the screw 17 from rotating due to vibration.
[0020] In this embodiment, the connecting component includes a connecting groove 12 and a connecting block 13. The connecting groove 12 is opened on the inner wall of the telescopic cylinder 10. The connecting block 13 can be slidably embedded in the inner cavity of the connecting groove 12 and fixedly connected to the outer wall of the telescopic rod 11. Under the joint action of the connecting groove 12 and the connecting block 13, one end of the telescopic rod 11 can always remain inserted in the inner cavity of the telescopic cylinder 10. The inner cavity of the connecting groove 12 and the outer wall of the connecting block 13 are adapted to each other and are both dovetail-shaped, so that one end of the connecting block 13 can always remain embedded in the inner cavity of the connecting groove 12.
[0021] In this embodiment, the carrying assembly includes a fixed plate 19, a mounting plate 20, a screw 21, a turntable 22, a plug plate 23, a second spring 24, a movable plate 35 and a socket 25. The fixed plate 19 is arranged at the bottom end of the protective box 1, the mounting plate 20 is arranged at the bottom end of the protective box 1, the screw 21 is rotatably connected to the middle part of the mounting plate 20 through a bearing, the turntable 22 is fixedly connected to one end of the screw 21, the movable plate 35 is screwed to the outer wall of the screw 21, the plug plate 23 is fixedly connected to the movable plate 35, the socket 25 is opened on the fixed plate 19, the second spring 24 is sleeved on the outside of the screw 21, and the turntable 22 is rotated to make the turntable 22 rotate. The disk 22 drives the lead screw 21 to rotate. Under the action of the rotational force of the outer wall thread of the lead screw 21, the movable plate 35 can drive the plug plate 23 to slide toward the fixed plate 19, so that the plug plate 23 is inserted into the inner cavity of the insertion hole 25, and the plug plate 23 can be wrapped around the belt, which can facilitate the carrying of the device. During the sliding process of the movable plate 35, the second spring 24 will be squeezed, so that the second spring 24 will be squeezed and produce corresponding elastic deformation, and then produce corresponding elastic force. Under the elastic force of the second spring 24, the pressure friction between the inner wall thread of the movable plate 35 and the outer wall thread of the lead screw 21 can be increased, thereby improving the stability of the carrying component when in use.
[0022] In this embodiment, the outer circumference of the turntable 22 is provided with anti-skid edges, which can increase the roughness of the outer circumference of the turntable 22, thereby improving the stability of the carrying component when in use.
[0023] In this embodiment, the limiting assembly includes a limiting groove 4 and a limiting block 5. The limiting groove 4 is opened on one side of the inner wall of the protective box 1. The limiting block 5 can be slidably embedded in the inner cavity of the limiting groove 4 and fixedly connected to the tester 3. Under the joint action of the limiting groove 4 and the limiting block 5, one end of the tester 3 can always remain inserted in the inner cavity of the protective box 1.
[0024] In this embodiment, the inner cavity of the limiting groove 4 is matched with the outer wall of the limiting block 5 and both are dovetail-shaped, so that one end of the limiting block 5 can always remain embedded in the inner cavity of the limiting groove 4, thereby improving the stability of the limiting assembly during use.
[0025] In this embodiment, the fixing assembly includes a frame 26, a screw rod 27, a guide rod 28, a slide plate 29, a clamp plate 30, a bracket 31 and a driving assembly. The frame 26 is arranged on one side of the outer wall of the protective box 1, one end of the screw rod 27 is rotatably connected to the bottom end of the inner cavity of the frame 26 through a bearing, and the other end of the screw rod 27 extends to the top of the frame 26. The guide rod 28 is arranged in the inner cavity of the frame 26 and is parallel to the screw rod 27. The two slide plates 29 are respectively screwed on the upper and lower sides of the outer wall of the screw rod 27 and are respectively slidably sleeved on the upper and lower sides of the outer wall of the guide rod 28. The two clamp plates 30 are respectively arranged on the two slide plates 29 and the sides of the two clamp plates 30 close to each other are inclined from both sides to the middle. The bracket 31 is arranged at the top of the frame 26. The driving assembly is arranged in the inner cavity of the bracket 31 and is fixedly sleeved on the outer wall of the screw rod 27. The screw rod 27 is driven to rotate by the driving assembly. Since the threads on the upper and lower sides of the outer wall of the screw rod 27 are relatively arranged, when the screw rod 27 rotates, the two slide plates 29 can slide toward the middle of the inner cavity of the frame 26 at the same time under the limiting action of the guide rod 28, so that the two clamping plates 30 clamp and fix the multi-section telescopic rod 8 or the test head 9, preventing the multi-section telescopic rod 8 and the test head 9 from getting entangled around during carrying because they do not have a fixing assembly. This solves the problem that the electrostatic test device in the prior art cannot store the electrostatic test head 9 during actual use, and the electrostatic test head 9 is easily damaged when it floats around during carrying.
[0026] In this embodiment, the driving assembly includes a worm 32, a worm wheel 34 and a handle 33. One end of the worm 32 is rotatably connected to the rear side of the inner cavity of the bracket 31 through a bearing, and the other end of the worm 32 extends to the front end of the bracket 31 and is fixedly connected to the handle 33. The worm wheel 34 is meshed with the worm 32. By rotating the handle 33, the handle 33 drives the worm 32 to rotate. Since the worm 32 is meshed with the worm wheel 34, when the worm 32 rotates, the worm wheel 34 can drive the screw 27 to rotate.
[0027] The test method for the electrostatic safety performance of non-metallic materials used in mining includes the following steps: S1, rotating the knob 18, so that the knob 18 drives the screw 17 to rotate. Under the action of the rotational force of the outer wall thread of the screw 17, when the screw 17 rotates, the tester 3 is pushed into the inner cavity of the protection box 1 under the limiting action of the limiting groove 4 and the limiting block 5, so that the multi-section telescopic rod 8 is extended, and the test head 9 is in contact with the material to be tested, and the electrostatic safety performance test is performed; S2, rotating the turntable 22, so that the turntable 22 drives the lead screw 21 to rotate, so that the movable plate 35 drives the plugging plate 23 to slide toward the fixed plate 19, so that the plugging plate 23 is inserted into the inner cavity of the slot, and then the plugging plate 23 is wrapped around the belt, which can facilitate the carrying of the device; S3. Rotate the knob 18 so that the knob 18 drives the worm 32 to rotate, thereby driving the worm wheel 34 to drive the screw 27 to rotate, so that the threads on the upper and lower sides of the outer wall of the screw 27 generate relative thread rotation forces, so that the two slide plates 29 respectively drive the two clamping plates 30 to slide toward the middle of the inner cavity of the frame 26 under the limiting action of the guide rod 28 to clamp and fix the multi-section telescopic rod 8 and the test head 9 to facilitate the storage of the multi-section telescopic rod 8 and the test head 9 for easy carrying.
[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A device and method for testing the electrostatic safety performance of non-metallic materials for mining, comprising a protective box (1), characterized in that: The inner cavity of the protection box (1) is slidably plugged with a tester (3), the top of the inner cavity of the protection box (1) is fixedly embedded with tempered glass (2), both sides of the inner cavity of the protection box (1) are provided with limit assemblies, and the two limit assemblies are respectively fixedly connected to the two sides of the tester (3), a frame (26) is provided on one side of the outer wall of the protection box (1), and the inner cavity of the frame (26) is provided with a fixing assembly, the bottom end of the tester (3) is provided with a wiring harness (7), the other end of the wiring harness (7) is provided with a multi-section telescopic rod (8), and the other end of the multi-section telescopic rod (8) is provided with a test head (9), and the test head (9) is electrically connected to the wiring harness (7), the top of the inner cavity of the protection box (1) is provided with an adjustment assembly, the rear side of the protection box (1) is provided with a carrying assembly, and the top of the tester (3) is provided with a display screen (6).
2. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 1 are characterized in that: The adjustment assembly comprises a fixed cylinder (16), a screw (17), a knob (18), a telescopic cylinder (10), a telescopic rod (11), a connecting assembly, a first spring (14) and an extrusion plate (15); the fixed cylinder (16) is fixedly embedded in the rear side of the inner cavity of the protective box (1); the screw (17) is screwed into the inner cavity of the fixed cylinder (16) and is rotatably connected to the rear side of the tester (3) through a bearing; the knob (18) fixes the rear end of the screw (17); the telescopic cylinder (10) is arranged at the rear side of the inner cavity of the protective box (1); the telescopic rod (11) is slidably inserted into the inner cavity of the telescopic cylinder (10); the extrusion plate (15) is arranged at the front end of the telescopic rod (11) and is sleeved on the outside of the screw (17); the first spring (14) is sleeved on the outside of the telescopic rod (11) and the telescopic cylinder (10); the connecting assembly is arranged in the inner cavity of the telescopic cylinder (10) and is fixedly connected to the outer wall of the telescopic rod (11).
3. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 2, characterized in that: The connecting assembly comprises a connecting groove (12) and a connecting block (13); the connecting groove (12) is formed on the inner wall of the telescopic cylinder (10); the connecting block (13) is slidably embedded in the inner cavity of the connecting groove (12) and fixedly connected to the outer wall of the telescopic rod (11); the inner cavity of the connecting groove (12) and the outer wall of the connecting block (13) are adapted to fit each other and are both dovetail-shaped.
4. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 1, characterized in that: The carrying assembly comprises a fixed plate (19), a mounting plate (20), a lead screw (21), a rotating plate (22), an inserting plate (23), a second spring (24), a movable plate (35) and a socket (25), wherein the fixed plate (19) is arranged at the bottom end of the protective box (1), the mounting plate (20) is arranged at the bottom end of the protective box (1), the lead screw (21) is rotatably connected to the middle part of the mounting plate (20) via a bearing, the rotating plate (22) is fixedly connected to one end of the lead screw (21), the movable plate (35) is screwed to the outer wall of the lead screw (21), the inserting plate (23) is fixedly connected to the movable plate (35), the socket (25) is opened on the fixed plate (19), and the second spring (24) is sleeved on the outside of the lead screw (21).
5. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 4, characterized in that: The outer wall circumference of the rotating disk (22) is provided with anti-slip edges.
6. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 1, characterized in that: The limiting assembly comprises a limiting groove (4) and a limiting block (5); the limiting groove (4) is provided on one side of the inner wall of the protection box (1); the limiting block (5) is slidably embedded in the inner cavity of the limiting groove (4) and is fixedly connected to the tester (3).
7. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 6, characterized in that: The inner cavity of the limiting groove (4) and the outer wall of the limiting block (5) are matched and both are dovetail-shaped.
8. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 1, characterized in that: The fixing assembly comprises a frame (26), a screw rod (27), a guide rod (28), a slide plate (29), a clamping plate (30), a bracket (31) and a driving assembly, wherein the frame (26) is arranged on one side of the outer wall of the protection box (1), one end of the screw rod (27) is rotatably connected to the bottom end of the inner cavity of the frame (26) through a bearing, and the other end of the screw rod (27) extends to the top end of the frame (26), and the guide rod (28) is arranged in the inner cavity of the frame (26) and is connected to the screw rod (27). ) are parallel to each other, the two slides (29) are respectively screwed on the upper and lower sides of the outer wall of the screw rod (27) and are respectively slidably sleeved on the upper and lower sides of the outer wall of the guide rod (28), the two clamping plates (30) are respectively arranged on the two slides (29) and the sides of the two clamping plates (30) close to each other are inclined from both sides to the middle, the bracket (31) is arranged at the top of the frame (26), and the driving component is arranged in the inner cavity of the bracket (31) and is fixedly sleeved on the outer wall of the screw rod (27).
9. The device and method for testing the electrostatic safety performance of non-metallic materials for mining according to claim 8, characterized in that: The driving assembly comprises a worm (32), a worm wheel (34) and a handle (33); one end of the worm (32) is rotatably connected to the rear side of the inner cavity of the bracket (31) via a bearing; the other end of the worm (32) extends to the front end of the bracket (31) and is fixedly connected to the handle (33); the worm wheel (34) is meshed with the worm (32).
10. The test method for the electrostatic safety performance of non-metallic materials used in mining is characterized by: The steps include: S1, rotating the knob (18) so that the knob (18) drives the screw (17) to rotate. Under the action of the rotational force of the outer wall thread of the screw (17), when the screw (17) rotates, the tester (3) is pushed into the inner cavity of the protection box (1) under the limiting action of the limiting groove (4) and the limiting block (5), so that the multi-section telescopic rod (8) is extended, and the test head (9) is brought into contact with the material to be tested, so as to perform an electrostatic safety performance test; S2, rotating the turntable (22), so that the turntable (22) drives the lead screw (21) to rotate, so that the movable plate (35) drives the plugging plate (23) to slide toward the fixed plate (19), so that the plugging plate (23) is inserted into the inner cavity of the slot, and then the plugging plate (23) is wrapped around the belt, so that the device can be easily carried; S3, rotating the knob (18), so that the knob (18) drives the worm (32) to rotate, thereby driving the worm wheel (34) to drive the screw (27) to rotate, so that the threads on the upper and lower sides of the outer wall of the screw (27) generate relative thread rotation force, so that the two slide plates (29) respectively drive the two clamping plates (30) to slide towards the middle of the inner cavity of the frame (26) under the limiting action of the guide rod (28) to clamp and fix the multi-section telescopic rod (8) and the test head (9) so as to facilitate the storage of the multi-section telescopic rod (8) and the test head (9) for easy carrying.