An electric power fitting abrasion testing machine

Abstract

The application relates to the technical field of hardware detection, in particular to an electric power hardware abrasion testing machine, which comprises a base, a testing unit and a supporting unit, the testing unit is fixedly arranged on the top of the base, the supporting unit is fixedly arranged on the top of the base and is located at the bottom of the testing unit. When the output rod of the hydraulic oil cylinder performs the last expansion and reaches the end of the stroke, the output shaft of the micro servo motor drives the torsion rod and the torsion bolt to rotate by 90 degrees again, so that the angle of the torsion bolt is consistent with the angle of the retreat straight groove in the inside of the observation slide block close to the thrust slide block; then, the output rod of the hydraulic oil cylinder drives the thrust slide block to move back, the observation slide block is separated from the thrust slide block, at this time, the positions of the pointers penetrating through the top of the two observation slide blocks correspond to the positions of the indicating scales, so that whether the electric power hardware is abraded and the abrasion degree of the electric power hardware can be directly known.

Description

Technical Field

[0001] This invention relates to the field of hardware testing technology, specifically to a wear testing machine for power hardware. Background Technology

[0002] The iron or aluminum metal accessories widely used in power transmission lines are collectively referred to as hardware. There are many types of hardware with different uses. For example, there are various wire clamps for installing conductors, various hanging rings for forming insulator strings, various crimping tubes and repair tubes for connecting conductors, various types of spacers on split conductors, etc. In addition, there are various guy wire hardware for poles and towers, as well as hardware for protecting conductors. The size of the hardware is related to the size of the conductor and they must be matched with each other. Power hardware will experience fretting wear when relative sliding occurs due to wind load or other factors. Therefore, the samples after production need to undergo wear resistance strength tests.

[0003] According to a Chinese patent application with publication number 202410386309.2, a corrosion and wear fatigue testing machine for power fittings is disclosed. This machine can simulate the relative sliding wear, stress, and corrosion of fittings under all environmental conditions, thereby effectively evaluating the wear and corrosion resistance of fittings under composite service conditions. However, the aforementioned testing machine cannot indicate the degree of wear of the power fittings. In other words, the testing machine can only test the wear process of the power fittings and cannot intuitively reflect whether wear exists or how severe the wear is. Therefore, we propose a power fitting wear testing machine to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides the following technical solution: a power fitting wear testing machine, comprising:

[0005] Base;

[0006] The test unit is fixedly mounted on top of the base;

[0007] The support unit is fixedly mounted on the top of the base and located at the bottom of the test unit.

[0008] As a preferred embodiment of the present invention, the test unit includes:

[0009] The mounting bracket is fixedly installed on the top of the base;

[0010] The movable plate is slidably mounted on top of the mounting base;

[0011] The rack is fixedly installed at the bottom of the movable plate;

[0012] The vertical shaft is rotatably mounted inside the movable plate via bearings and extends through the top and bottom of the movable plate;

[0013] The gear is fixedly mounted on the outer wall of the vertical shaft and meshes with the rack;

[0014] The swing arm is fixedly installed on the bottom of the outer wall of the vertical shaft;

[0015] The threaded hole is located at the bottom of the swing arm, away from the gear.

[0016] Stud, a threaded connection inside a threaded hole;

[0017] The insert rod is fixedly installed at the bottom of the stud;

[0018] The handwheel is fixedly mounted on the top of the stud.

[0019] As a preferred embodiment of the present invention, the test unit further includes:

[0020] The grooved guide rail is fixedly installed on the top of the movable plate;

[0021] The thrust slider is slidably mounted inside the grooved guide rail;

[0022] A hydraulic cylinder is fixedly mounted at one end of a grooved guide rail, and the end of the hydraulic cylinder output rod is connected to the thrust slider via a floating joint.

[0023] The guide frame is fixedly installed at the end of the movable plate away from the hydraulic cylinder;

[0024] A straight rod is fixedly installed on one side of the thrust slider near the guide frame, and moves through the interior of the guide frame.

[0025] Spring one is sleeved around the straight rod and fixedly installed between the thrust slider and the guide frame.

[0026] The support column is fixedly installed between the top of the base and the four corners of the bottom of the mounting base.

[0027] As a preferred embodiment of the present invention, the test unit further includes:

[0028] The observation slider is slidably installed inside the grooved guide rail and located on the side of the thrust slider near the guide frame. There are two observation sliders, and the two observation sliders are in contact with each other.

[0029] The pointers are fixedly mounted on the top of the two observation sliders;

[0030] The indicator scale is located on the outer surface of the grooved guide rail and corresponds to the position of the pointer.

[0031] As a preferred embodiment of the present invention, the test unit further includes:

[0032] A circular groove is provided on the side of the observation slider that is away from the pushing slider.

[0033] A straight groove for yielding is formed on one side of the observation slider near the thrust slider and is connected to the inside of the circular groove. The two straight grooves for yielding inside the observation slider are perpendicularly distributed.

[0034] The motor mounting cavity is located on the side of the thrust slider that is away from the observation slider.

[0035] A miniature servo motor is fixedly installed inside the motor mounting cavity;

[0036] A torsion bar is fixedly installed at the end of the output shaft of a micro servo motor. The torsion bar moves through the thrust slider and through the interior of both observation sliders.

[0037] A torsion bolt is fixedly installed at the end of the torsion bar away from the micro servo motor, and the specifications of the torsion bolt are adapted to the specifications of the relief straight groove.

[0038] As a preferred embodiment of the present invention, the test unit further includes:

[0039] The slide is located on the side of the observation slider near the inner side of the groove-shaped guide rail;

[0040] The brake seat is slidably mounted inside the slide groove;

[0041] The brake pad is fixedly installed on the side of the brake seat away from the slide groove, and the brake pad abuts against the inner side of the grooved guide rail.

[0042] Spring 2 is fixedly installed inside the slide groove and between the brake seat and the inner side of the slide groove.

[0043] As a preferred embodiment of the present invention, the test unit further includes:

[0044] Linear guide rail, fixedly mounted on top of the mounting base;

[0045] A linear slider is fixedly installed at the bottom of the movable plate and located on the side of the rack away from the gear. The linear slider is slidably installed on the top periphery of the linear slider.

[0046] As a preferred embodiment of the present invention, a cylinder mounting base is fixedly installed at one end of the mounting base near the hydraulic cylinder, and the hydraulic cylinder is fixedly installed on the side of the cylinder mounting base by bolts.

[0047] As a preferred embodiment of the present invention, the support unit includes:

[0048] The support platform is fixedly installed on top of the base;

[0049] The base plate is fixedly installed on the top of the support platform;

[0050] The threaded column is fixedly installed on the top of the support platform and penetrates the interior of the base plate;

[0051] Pressure plate, located at the top of the base plate;

[0052] A clearance hole is formed through the top of the pressure plate, and the clearance hole is fitted around the threaded post.

[0053] Positioning posts are fixedly installed on the top of the support platform, and there are two of them, with the two positioning posts distributed at both ends of the base plate;

[0054] Positioning holes are formed through both ends of the top of the pressure plate, and the two positioning holes are respectively fitted around the two positioning posts.

[0055] Electrical fittings are fitted around the threaded column and located between the base plate and the pressure plate.

[0056] As a preferred embodiment of the present invention, a sheet metal bending bracket is fixedly installed on the top of the mounting base. The sheet metal bending bracket is located on one side of the movable plate. A slotted photoelectric sensor is fixedly installed on the side of the sheet metal bending bracket near the thrust slider. A sensing sheet metal is fixedly installed on the side of the thrust slider near the sheet metal bending bracket. The position of the sensing sheet metal is adapted to the position of the slotted photoelectric sensor.

[0057] Compared with the prior art, the beneficial effects of the present invention are:

[0058] 1. In this invention, when the output rod of the hydraulic cylinder performs its final extension and reaches the end of its stroke, the output shaft of the micro servo motor drives the torsion rod and torsion bolt to rotate 90 degrees again, so that the angle of the torsion bolt matches the angle of the straight groove opened inside the observation slider near the thrust slider. After that, the output rod of the hydraulic cylinder drives the thrust slider to move back, and the observation slider disengages from the thrust slider. At this time, the position of the pointer passing through the top of the two observation sliders corresponds to the position of the indicated scale, so that it can be intuitively known whether there is wear on the power fitting and the degree of wear on the power fitting.

[0059] 2. In this invention, since both ends of the observation slider are provided with grooves, and a brake seat is slidably installed inside the groove, and due to the elastic force of the second spring, the brake pad is tightly attached to the inner wall of the grooved guide rail by the brake seat. Due to the friction between the brake pad and the inner wall of the grooved guide rail, it can be ensured that the observation slider and the thrust slider are separated and do not move freely inside the grooved guide rail, so that the numerical value of the test result is more accurate. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the structure of the present invention;

[0061] Figure 2 In this invention Figure 1 Partial structural diagram;

[0062] Figure 3This is a schematic diagram of the unfolded structure of the support unit in this invention;

[0063] Figure 4 In this invention Figure 3 A magnified structural diagram of part A;

[0064] Figure 5 This is a schematic diagram of the bottom view structure of the test unit in this invention;

[0065] Figure 6 This is a schematic diagram of the rack and gear structure in this invention;

[0066] Figure 7 This is a schematic diagram of the top structure of the movable plate in this invention;

[0067] Figure 8 In this invention Figure 7 A schematic diagram of the enlarged structure of part B;

[0068] Figure 9 This is a schematic diagram of the thrust slider in this invention;

[0069] Figure 10 In this invention Figure 9 A magnified structural diagram of section C;

[0070] Figure 11 This is a schematic diagram of the structure of the observation slider in this invention;

[0071] Figure 12 This is a side cross-sectional schematic diagram of the thrust slider in this invention.

[0072] In the diagram: 100, base; 200, test unit; 201, mounting base; 202, movable plate; 203, rack; 204, vertical shaft; 205, gear; 206, swing arm; 207, threaded hole; 208, stud; 209, insert rod; 2010, handwheel; 2011, grooved guide rail; 2012, thrust slider; 2013, hydraulic cylinder; 2014, guide frame; 2015, straight rod; 2016, spring one; 2017, observation slider; 2018, pointer; 2019, indicating scale; 2020, circular groove; 2021, yielding straight groove; 2022, motor mounting cavity; 202 3. Miniature servo motor; 2024. Torsion bar; 2025. Torsion bolt; 2026. Slide groove; 2027. Brake seat; 2028. Brake pad; 2029. Spring II; 2030. Linear guide rail; 2031. Linear slider; 2032. Hydraulic cylinder mounting base; 2033. Support column; 300. Support unit; 301. Support platform; 302. Base plate; 303. Threaded column; 304. Pressure plate; 305. Clearance hole; 306. Positioning column; 307. Positioning hole; 308. Power fittings; 401. Sheet metal bending bracket; 402. Slotted photoelectric sensor; 403. Inductive sheet metal. Detailed Implementation

[0073] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] Please see Figures 1-12 The technical solution provided by the present invention specifically includes the following embodiments:

[0075] A power fitting wear testing machine includes a base 100, a test unit 200 and a support unit 300. The test unit 200 is fixedly installed on the top of the base 100, and the support unit 300 is fixedly installed on the top of the base 100 and located at the bottom of the test unit 200.

[0076] For further details, please refer to [link / reference]. Figures 2-8 As shown:

[0077] The test unit 200 includes a mounting base 201, a movable plate 202, a rack 203, a vertical shaft 204, a gear 205, a swing arm 206, a threaded hole 207, a stud 208, a plug rod 209, a handwheel 2010, a grooved guide rail 2011, a thrust slider 2012, a hydraulic cylinder 2013, a guide frame 2014, a straight rod 2015, a spring 2016, a linear guide rail 2030, a linear slider 2031, and a support column 2033. The mounting base 201 is fixedly mounted on the top of the base 100, the movable plate 202 is slidably mounted on the top of the mounting base 201, and the rack 203 is fixedly mounted on the movable plate 201. At the bottom of the movable plate 202, a vertical shaft 204 is rotatably mounted inside the movable plate 202 via bearings, and passes through the top and bottom of the movable plate 202. A gear 205 is fixedly mounted on the outer wall of the vertical shaft 204 and meshes with a rack 203. A swing arm 206 is fixedly mounted on the bottom of the outer wall of the vertical shaft 204. A threaded hole 207 is opened at the bottom of the swing arm 206 away from the gear 205. A stud 208 is threaded into the threaded hole 207. A plug rod 209 is fixedly mounted on the bottom of the stud 208. A handwheel 2010 is fixedly mounted on the top of the stud 208. A grooved guide rail 2011 is fixedly mounted on the top of the movable plate 202. The thrust slider 2012 is slidably mounted inside the grooved guide rail 2011. The hydraulic cylinder 2013 is fixedly mounted at one end of the grooved guide rail 2011, and the output rod end of the hydraulic cylinder 2013 is connected to the thrust slider 2012 via a floating joint. The guide frame 2014 is fixedly mounted at the end of the movable plate 202 away from the hydraulic cylinder 2013. The straight rod 2015 is fixedly mounted on the side of the thrust slider 2012 near the guide frame 2014 and moves through the interior of the guide frame 2014. A spring 2016 is sleeved around the straight rod 2015 and fixedly mounted on the thrust slider 2012. Between the guide frame 2014 and the guide frame 2014, the linear guide rail 2030 is fixedly installed on the top of the mounting base 201, the linear slider 2031 is fixedly installed on the bottom of the movable plate 202 and located on the side of the rack 203 away from the gear 205, the linear slider 2031 is slidably installed on the top periphery of the linear slider 2031, the support column 2033 is fixedly installed between the top of the base 100 and the four corners of the bottom of the mounting base 201, and the end of the mounting base 201 near the hydraulic cylinder 2013 is fixedly installed with a cylinder fixing seat 2032, and the hydraulic cylinder 2013 is fixedly installed on the side of the cylinder fixing seat 2032 by bolts;

[0078] The support unit 300 includes a support platform 301, a base plate 302, a threaded column 303, a pressure plate 304, a clearance hole 305, a positioning column 306, a positioning hole 307, and an electrical fitting 308. The support platform 301 is fixedly installed on the top of the base 100, the base plate 302 is fixedly installed on the top of the support platform 301, the threaded column 303 is fixedly installed on the top of the support platform 301 and penetrates the interior of the base plate 302, the pressure plate 304 is located on the top of the base plate 302, and the clearance hole 305 is formed through the plate. At the top of the pressure plate 304, the clearance hole 305 is sleeved around the threaded post 303. The positioning post 306 is fixedly installed on the top of the support platform 301, and there are two of them. The two positioning posts 306 are distributed at both ends of the base plate 302. The positioning hole 307 is opened through at both ends of the top of the pressure plate 304. The two positioning holes 307 are respectively sleeved around the two positioning posts 306. The power fitting 308 is sleeved around the threaded post 303 and is located between the base plate 302 and the pressure plate 304.

[0079] Specifically, the mounting hole of the power fitting 308 is fitted around the threaded post 303. The bottom of the power fitting 308 is supported by the top of the base plate 302. Then, the two positioning holes 307 on the pressure plate 304 are aligned with the two positioning posts 306, and the pressure plate 304 is pressed onto the top of the power fitting 308. Next, the nut is installed around the threaded post 303. Through the threaded tightening force between the nut and the threaded post 303, the pressure plate 304 is pressed tightly onto the top of the power fitting 308. After that, the handwheel 2010 is turned, which drives the stud 208 and the insertion rod 209 to rotate. Since the stud 208 is threadedly connected to the threaded hole 207, the rotation of the stud 208 causes it to screw downwards along the inside of the threaded hole 207, inserting the insertion rod 209 into a hole at the end of the power fitting 308 (as per the instruction manual). Figure 2As shown, the output rod of hydraulic cylinder 2013 is reciprocated and extended by a computer program, and the number of reciprocations of the output rod of hydraulic cylinder 2013 is limited. When the output rod of hydraulic cylinder 2013 extends, it pushes the thrust slider 2012 to move away from hydraulic cylinder 2013 along the inside of the grooved guide rail 2011. At the same time, the thrust slider 2012 also pushes the two observation sliders 2017 to move together along the inside of the grooved guide rail 2011. In addition, the thrust slider 2012 also pushes the straight rod 2015 to move, causing spring 2016 to compress and accumulate elastic force. When the accumulated elastic force of spring 2016 reaches a certain level, it pushes the movable plate 202 to move along the sliding connection direction between the linear slider 2031 and the linear guide rail 2030. The movement of the movable plate 202 drives the rack 203. The rack 203 and gear 205 move together. Because the rack 203 meshes with the gear 205, the movement of the rack 203 causes the gear 205, vertical shaft 204, swing arm 206, stud 208 and insert rod 209 to rotate together, causing the power fitting 308 to rotate along the periphery of the threaded stud 303. During the rotation of the power fitting 308, friction is generated between the contact surfaces of the base plate 302 and pressure plate 304. Afterwards, the output rod of the hydraulic cylinder 2013 retracts. On the same principle, the power fitting 308 rotates in the opposite direction along the periphery of the threaded stud 303. Thus, during the continuous reciprocating extension and retraction of the output rod of the hydraulic cylinder 2013, the power fitting 308 reciprocates along the periphery of the threaded stud 303, constantly rubbing against the base plate 302 and pressure plate 304, causing wear on the surface of the power fitting 308. This is the wear resistance test of the power fitting 308.

[0080] After the power fitting 308 wears out, the friction between the pressure plate 304 and the power fitting 308 decreases. In other words, the damping of the rotation of the power fitting 308 decreases. Therefore, when the output rod of the hydraulic cylinder 2013 pushes the thrust slider 2012 and the straight rod 2015 to move, the compression of the spring 2016 also decreases.

[0081] For further details, please refer to [link / reference]. Figure 8 , Figure 9 , Figure 11 and Figure 12 As shown:

[0082] The test unit 200 further includes an observation slider 2017, a pointer 2018, an indicator scale 2019, a circular groove 2020, a straight recessed groove 2021, a motor mounting cavity 2022, a micro servo motor 2023, a torsion bar 2024, and a torsion bolt 2025. The observation slider 2017 is slidably mounted inside the grooved guide rail 2011 and is located on the side of the thrust slider 2012 near the guide frame 2014. There are two observation sliders 2017, which are fitted together. The pointer 2018 is fixedly mounted on the top of the two observation sliders 2017 respectively. The indicator scale 2019 is opened on the outer surface of the grooved guide rail 2011 and corresponds to the position of the pointer 2018. The circular groove 2020 is opened on the side of the observation slider 2017 away from the thrust slider 2012. A straight groove 2021 is formed on one side of the observation slider 2017 near the thrust slider 2012 and communicates with the interior of the circular groove 2020. The straight grooves 2021 formed inside the two observation sliders 2017 are vertically distributed. The motor mounting cavity 2022 is formed on one side of the thrust slider 2012 away from the observation slider 2017. The micro servo motor 2023 is fixedly installed inside the motor mounting cavity 2022. The torsion rod 2024 is fixedly installed at the end of the output shaft of the micro servo motor 2023. The torsion rod 2024 movably passes through the thrust slider 2012 and passes through the interior of the two observation sliders 2017. The torsion bolt 2025 is fixedly installed at the end of the torsion rod 2024 away from the micro servo motor 2023. The specifications of the torsion bolt 2025 are adapted to the specifications of the straight groove 2021.

[0083] Specifically, the output rod of hydraulic cylinder 2013 pushes the thrust slider 2012 to move away from hydraulic cylinder 2013 along the inside of the grooved guide rail 2011. Simultaneously, the thrust slider 2012 also pushes two observation sliders 2017 to move together along the inside of the grooved guide rail 2011. When the output rod of hydraulic cylinder 2013 extends for the first time and reaches its maximum extension stroke, the output shaft of micro servo motor 2023 drives torsion bar 2024 and torsion bolt 2025 to rotate 90 degrees, so that the angle of torsion bolt 2025 matches the angle of the yielding groove 2021 opened inside the observation slider 2017 furthest from the thrust slider 2012 (as per the instruction manual). Figure 11(As shown), the output rod of the hydraulic cylinder 2013 then retracts, driving the thrust slider 2012, micro servo motor 2023, torsion rod 2024, and torsion bolt 2025 to move back. This causes the torsion bolt 2025 to disengage from the retraction groove 2021 furthest from the thrust slider 2012. Therefore, the observation slider 2017 furthest from the thrust slider 2012 cannot move back with the thrust slider 2012. Since the retraction grooves 2021 inside the two observation sliders 2017 are vertically aligned, the torsion... As bolt 2025 moves back, it drives observation slider 2017, which is closest to the thrust slider 2012, to move back as well, until the hydraulic cylinder 2013 output rod reaches the number of reciprocating strokes set by the computer. At this point, hydraulic cylinder 2013 stops working. Because the power fitting 308 reciprocates along the periphery of the threaded post 303, it continuously rubs against the base plate 302 and pressure plate 304, causing wear on the surface of the power fitting 308. After the power fitting 308 wears down, the friction between the pressure plate 304 and the power fitting 308 decreases. The damping of the rotation of the power fitting 308 is reduced. Therefore, when the output rod of the hydraulic cylinder 2013 pushes the thrust slider 2012 and the straight rod 2015 to move, the compression of the spring 2016 also decreases. Under the elastic force of the spring 2016, the vertical shaft 204, the grooved guide rail 2011, and the movable plate 202 move. When the output rod of the hydraulic cylinder 2013 performs its final extension and reaches the end of its stroke, the output shaft of the micro servo motor 2023 drives the torsion bar 2024 and the torsion bolt 2025 again. After rotating 90 degrees, the angle of the torsion bolt 2025 is aligned with the angle of the relief groove 2021 inside the observation slider 2017 near the thrust slider 2012. Then, the output rod of the hydraulic cylinder 2013 drives the thrust slider 2012 to move back, and the observation slider 2017 disengages from the thrust slider 2012. At this time, the pointer 2018 passing through the top of the two observation sliders 2017 corresponds to the position of the scale 2019, which allows for a direct visual indication of whether the power fitting 308 is worn and the degree of wear.

[0084] For further details, please refer to [link / reference]. Figure 10 As shown:

[0085] The test unit 200 also includes a slide groove 2026, a brake seat 2027, a brake pad 2028, and a second spring 2029. The slide groove 2026 is located on the side of the observation slider 2017 near the inner side of the grooved guide rail 2011. The brake seat 2027 is slidably installed inside the slide groove 2026. The brake pad 2028 is fixedly installed on the side of the brake seat 2027 away from the slide groove 2026. The brake pad 2028 abuts against the inner side of the grooved guide rail 2011. The second spring 2029 is fixedly installed inside the slide groove 2026 and is fixedly installed between the brake seat 2027 and the inner side of the slide groove 2026.

[0086] Specifically, since both ends of the observation slider 2017 are provided with grooves 2026, and a brake seat 2027 is slidably installed inside the groove 2026, and due to the elastic force of the spring 2029, the brake pad 2028 is tightly attached to the inner wall of the grooved guide rail 2011 through the brake seat 2027. Due to the friction between the brake pad 2028 and the inner wall of the grooved guide rail 2011, it can be ensured that the observation slider 2017 does not easily move freely inside the grooved guide rail 2011 after it is separated from the thrust slider 2012, making the test results more accurate.

[0087] For further details, please refer to [link / reference]. Figure 7 , Figure 8 As shown:

[0088] A sheet metal bending bracket 401 is fixedly installed on the top of the mounting base 201. The sheet metal bending bracket 401 is located on one side of the movable plate 202. A slotted photoelectric sensor 402 is fixedly installed on the side of the sheet metal bending bracket 401 near the thrust slider 2012. A sensing sheet metal 403 is fixedly installed on the side of the thrust slider 2012 near the sheet metal bending bracket 401. The position of the sensing sheet metal 403 is adapted to the position of the slotted photoelectric sensor 402.

[0089] Specifically, as the thrust slider 2012 moves along the inside of the grooved guide rail 2011, it also drives the sensing sheet metal 403 to move together. The grooved photoelectric sensor 402 senses the number of times the sheet metal 403 moves back and forth, which is the number of times the output rod of the hydraulic cylinder 2013 extends and retracts. This information is then fed back to the computer to ensure that the hydraulic cylinder 2013 stops after the number of times the output rod extends and retracts back and forth reaches the test set number.

[0090] The working process of this electrical fitting wear testing machine includes the following steps:

[0091] Installation: Fit the mounting hole of the power fitting 308 around the threaded post 303. Support the bottom of the power fitting 308 with the top of the base plate 302. Align the two positioning holes 307 on the pressure plate 304 with the two positioning posts 306. Press the pressure plate 304 onto the top of the power fitting 308. Install the nut around the threaded post 303. Through the threaded fastening force between the nut and the threaded post 303, press the pressure plate 304 onto the top of the power fitting 308. Then, turn the handwheel 2010 to drive the stud 208 and the insertion rod 209 to rotate. Since the stud 208 is threadedly connected to the threaded hole 207, the rotation of the stud 208 will cause it to screw downwards along the inside of the threaded hole 207, inserting the insertion rod 209 into a hole at the end of the power fitting 308.

[0092] Experiment: The output rod of hydraulic cylinder 2013 was reciprocated and extended by a computer program, and the number of reciprocations of the output rod of hydraulic cylinder 2013 was limited. When the output rod of hydraulic cylinder 2013 extended, it pushed the thrust slider 2012 to move away from hydraulic cylinder 2013 along the inside of the grooved guide rail 2011. Simultaneously, the thrust slider 2012 also pushed two observation sliders 2017 to move together along the inside of the grooved guide rail 2011. Furthermore, the thrust slider 2012 also pushed the straight rod 2015 to move, causing spring 2016 to compress and accumulate elastic force. When the accumulated elastic force of spring 2016 reached a certain level, it pushed the movable plate 202 along the straight slider 2031. The linear guide 2030 moves in the sliding connection direction, and the moving plate 202 moves, causing the rack 203 to move together. Since the rack 203 meshes with the gear 205, the movement of the rack 203 causes the gear 205, vertical shaft 204, swing arm 206, stud 208, and insert rod 209 to rotate together, causing the power fitting 308 to rotate along the periphery of the threaded stud 303. During the rotation of the power fitting 308, friction will occur between the contact surfaces of the base plate 302 and pressure plate 304. It should be noted that when the output rod of the hydraulic cylinder 2013 extends for the first time and reaches its maximum extension stroke, the output shaft of the micro servo motor 2023 drives the torsion rod 2024 and torsion bolt 2025 to rotate 90 degrees, so that the angle of the torsion bolt 2025 is furthest from the thrust. When the angle of the recessed straight groove 2021 inside one of the observation sliders 2017 of slider 2012 matches, the output rod of hydraulic cylinder 2013 retracts, driving the thrust slider 2012, micro servo motor 2023, torsion rod 2024, and torsion bolt 2025 to move back. The observation slider 2017 furthest from the thrust slider 2012 cannot move back with the thrust slider 2012. However, because the recessed straight grooves 2021 inside the two observation sliders 2017 are vertically set, during the retraction of the torsion bolt 2025, it drives the observation slider 2017 closest to the thrust slider 2012 to move back together, until the number of reciprocating extensions and retractions of the output rod of hydraulic cylinder 2013 reaches the number set by the computer. When hydraulic cylinder 2013 stops working, the electric fitting 308 reciprocates along the periphery of the threaded column 303, constantly rubbing against the base plate 302 and pressure plate 304. This causes wear on the surface of the electric fitting 308. After wear, the friction between the pressure plate 304 and the electric fitting 308 decreases, meaning the damping of the electric fitting 308's rotation decreases. Therefore, as the output rod of hydraulic cylinder 2013 pushes the thrust slider 2012 and the straight rod 2015, the compression of spring 2016 decreases. Under the elastic force of spring 2016, the vertical shaft 204, the grooved guide rail 2011, and the movable plate 202 move. When the output rod of hydraulic cylinder 2013 performs its final extension and reaches the end of its stroke...The output shaft of the micro servo motor 2023 drives the torsion bar 2024 and torsion bolt 2025 to rotate 90 degrees again, so that the angle of the torsion bolt 2025 matches the angle of the relief groove 2021 opened inside the observation slider 2017 near the thrust slider 2012. Then, the output rod of the hydraulic cylinder 2013 drives the thrust slider 2012 to move back, and the observation slider 2017 disengages from the thrust slider 2012. At this time, the pointer 2018 passing through the top of the two observation sliders 2017 corresponds to the position of the indicating scale 2019, which allows for a direct visual indication of whether the power fitting 308 is worn and the degree of wear.

[0093] Since both ends of the observation slider 2017 are provided with grooves 2026, and a brake seat 2027 is slidably installed inside the groove 2026, and due to the elastic force of the spring 2029, the brake pad 2028 is tightly pressed against the inner wall of the grooved guide rail 2011 through the brake seat 2027. Due to the friction between the brake pad 2028 and the inner wall of the grooved guide rail 2011, it can be ensured that the observation slider 2017 does not easily move freely inside the grooved guide rail 2011 after it is separated from the thrust slider 2012, making the test results more accurate.

[0094] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. An electric power fitting abrasion tester characterized by comprising: Include: Base; Test unit, fixedly arranged on the top of the base, the test unit comprises: Mounting seat, fixedly arranged on the top of the base; Movable plate, slidingly arranged on the top of the mounting seat; Rack, fixedly installed on the bottom of the movable plate; Vertical shaft, rotatably installed inside the movable plate through a bearing, and penetrating through the top and the bottom of the movable plate; Gear, fixedly installed on the outer wall of the vertical shaft, and engaged with the rack; Groove-shaped guide rail, fixedly installed on the top of the movable plate; Thrust slider, slidingly installed inside the groove-shaped guide rail; Hydraulic cylinder, fixedly arranged at one end of the groove-shaped guide rail, and connected between the output rod end of the hydraulic cylinder and the thrust slider through a floating joint; Guide frame, fixedly installed at the end of the movable plate away from the hydraulic cylinder; Straight rod, fixedly installed on the side of the thrust slider close to the guide frame, and movably penetrating through the inside of the guide frame; Spring one, sleeved on the outer periphery of the straight rod, and fixedly installed between the thrust slider and the guide frame; Observation slider, slidingly installed inside the groove-shaped guide rail, and located on the side of the thrust slider close to the guide frame, the number of the observation slider is two, and the two observation sliders are mutually adhered; Pointer, fixedly installed on the top of the two observation sliders respectively; Indication scale, opened on the outer side of the groove-shaped guide rail, and corresponding to the position of the pointer; Circular groove, opened on the side of the observation slider away from the thrust slider; Retreating straight groove, opened on the side of the observation slider close to the thrust slider, and penetrating through the inside of the circular groove, and the retreating straight grooves opened inside the two observation sliders are vertically distributed; Torsion rod, movably penetrating through the thrust slider, and penetrating through the inside of the two observation sliders; Torsion bolt, the specification of which is matched with the specification of the retreating straight groove; Support unit, fixedly arranged on the top of the base, and located at the bottom of the test unit; When the output rod of the hydraulic cylinder is extended, the thrust slider is pushed, the spring one is compressed to accumulate elastic force, the movable plate is pushed and slides, due to the engagement between the rack and the gear, the electric power fitting is rotated and friction is generated between the contact surface of the electric power fitting and the bottom plate and the pressing plate, when the output rod of the hydraulic cylinder reaches the maximum stroke, the torsion bolt is rotated and matched with the angle of the observation slider farthest away from the thrust slider, in the process of moving back of the torsion bolt, the observation slider closest to the thrust slider is moved back together.

2. The electric power fitting wear test machine according to claim 1, wherein: The test unit further comprises: Swing arm, fixedly installed on the bottom of the outer wall of the vertical shaft; Thread hole, opened at the end of the bottom of the swing arm away from the gear; Stud, threadedly connected inside the thread hole; Insert rod, fixedly installed on the bottom of the stud; Hand wheel, fixedly installed on the top of the stud.

3. The electric power fitting wear test machine according to claim 2, wherein: The test unit further comprises: Support column, fixedly installed between the four corners of the top of the base and the bottom of the mounting seat.

4. The electric power fitting wear test machine according to claim 3, wherein: The test unit further comprises: Motor installation cavity, opened on the side of the thrust slider away from the observation slider; Miniature servo motor, fixedly installed inside the motor installation cavity; Torsion rod, fixedly installed on the end of the output shaft of the miniature servo motor; Torsion bolt, fixedly installed on the end of the torsion rod away from the miniature servo motor.

5. The power fitting abrasion tester according to claim 4, characterized in that: The test unit further comprises: A sliding groove is arranged on one side of the inner side of the observation sliding block close to the channel-shaped guide rail; A brake seat is slidingly installed inside the sliding groove; A brake pad is fixedly installed on the side of the brake seat away from the sliding groove, and the brake pad is in contact with the inner side of the channel-shaped guide rail; Spring two is fixedly arranged inside the sliding groove and fixedly installed between the brake seat and the inner side of the sliding groove.

6. The power fitting abrasion tester according to claim 5, characterized in that: The test unit further comprises: A linear guide rail is fixedly installed on the top of the mounting seat; A linear sliding block is fixedly installed on the bottom of the movable plate and located on the side of the rack away from the gear, and the linear sliding block is slidingly installed on the top of the linear sliding block.

7. The power fitting abrasion tester according to claim 6, characterized in that: The mounting seat is fixedly installed with an oil cylinder fixing seat on one end close to the hydraulic oil cylinder, and the hydraulic oil cylinder is fixedly installed on the side of the oil cylinder fixing seat through bolts.

8. The power fitting abrasion tester according to claim 7, characterized in that: The support unit comprises: A support table is fixedly installed on the top of the base; A bottom plate is fixedly installed on the top of the support table; A threaded column is fixedly installed on the top of the support table and penetrates through the inside of the bottom plate; A pressing plate is located on the top of the bottom plate; A clearance hole is arranged on the top of the pressing plate and is sleeved on the outer periphery of the threaded column; Two positioning columns are fixedly installed on the top of the support table, and the two positioning columns are distributed on both ends of the bottom plate; Positioning holes are arranged on both ends of the top of the pressing plate and are sleeved on the outer periphery of the two positioning columns, respectively; A power fitting is sleeved on the outer periphery of the threaded column and located between the bottom plate and the pressing plate.

9. The power fitting abrasion tester according to claim 8, characterized in that: A sheet metal bending support is fixedly installed on the top of the mounting seat, and the sheet metal bending support is located on one side of the movable plate, a channel-shaped photoelectric sensor is fixedly installed on the side of the sheet metal bending support close to the thrust sliding block, a sensing sheet metal is fixedly installed on the side of the thrust sliding block close to the sheet metal bending support, and the position of the sensing sheet metal is matched with the position of the channel-shaped photoelectric sensor.

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