Reliability detection device for gear transmission type electric cylinder experiment

Abstract

The invention discloses a reliability detection device for a gear transmission type electric cylinder experiment, which relates to the technical field of electric cylinder detection and comprises a control box, a detection box, a clamping mechanism, a load assembly, an industrial camera, a vibration motor, a high-temperature simulation mechanism and an intelligent temperature controller. A push cylinder placing table in the detection box is provided with an air heating cavity and an air inlet hole, and all the parts work cooperatively; the method has remarkable advantages; working conditions are accurately restored, a high-temperature and vibration composite environment can be simulated in the same process, the defects of traditional step-by-step testing are overcome, detection data are made to be in accordance with reality, and accurate evaluation of performance, optimization of product design and improvement of production efficiency and quality are facilitated; temperature control is accurate, heat distribution is uniform, temperature control is accurate according to a preset curve, and the problem of uneven heat is solved by means of the design of an exhaust guide box and strip-shaped exhaust holes; detection efficiency is greatly improved, detection is completed through the same device and process, the process is simplified, time is shortened, research and development are accelerated, the equipment utilization rate is improved, and cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric cylinder detection, and in particular to a reliability detection device for gear-driven electric cylinder experiments. Background Art

[0002] In the field of detection technology of gear-driven electric cylinders, with the continuous improvement of the degree of industrial automation, the requirements for the reliability of electric cylinders are becoming more and more stringent; in actual applications, electric cylinders are often in complex and changeable working environments, especially high temperature and vibration environments are more common. For example, in some equipment in the metallurgical, chemical, mechanical manufacturing and other industries, the electric cylinders will be simultaneously subjected to high temperature and vibration during operation; however, the existing detection technology has obvious limitations; most traditional detection devices can only focus on a single factor for simulation detection, or can only perform reliability tests such as load testing, speed testing, accuracy testing or durability.

[0003] Taking the radial load test of the push rod in the electric cylinder as an example, the cylinder body in the electric cylinder is generally fixed by clamping, and the circuit is connected, and then radial pressure is applied to the end of the push rod in the electric cylinder for detection. The gear-driven electric cylinder cannot be directly tested under high temperature or vibration conditions commonly seen in actual work. When it is necessary to evaluate the performance of the electric cylinder under conditions where high temperature and vibration coexist, the existing method is usually to first perform a high temperature test on a special high temperature test device, and then transfer the electric cylinder to a vibration test device for vibration testing. This step-by-step testing method is not only cumbersome, time-consuming and labor-intensive, but also because the two tests are performed on different equipment and at different times, it is difficult to accurately restore the comprehensive impact of high temperature and vibration on the electric cylinder under actual working conditions. It is unable to fully and truly reflect the reliability of the electric cylinder under complex actual working conditions, resulting in deviations between the test results and the actual application situation, making it difficult to accurately evaluate and optimize the performance of the electric cylinder, which restricts the production efficiency and product quality improvement of related industries. In view of this, this paper proposes a reliability detection device for gear-driven electric cylinder experiments. Summary of the invention

[0004] The main purpose of the present invention is to provide a reliability detection device for gear-driven electric cylinder experiments, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A reliability testing device for a gear-driven electric cylinder experiment, comprising a control box, a testing box, a clamping mechanism for fixing a cylinder body of the gear-driven electric cylinder, a load assembly, an industrial camera for monitoring a testing process, a vibration motor for providing a vibration source, a high-temperature simulation mechanism for simulating a high-temperature environment, and an intelligent temperature controller;

[0007] The detection box is connected to the control box, and a push cylinder placement table for horizontally placing the cylinder body of the gear-driven electric cylinder is provided inside the detection box. The push cylinder placement table has an air heating cavity, and a plurality of air inlet holes are densely arranged on the right side of the air heating cavity;

[0008] The clamping mechanism is installed directly above the push cylinder placement table in the detection box, and the load assembly is vertically suspended on the end of the push rod of the gear-driven electric cylinder on the right side of the push cylinder placement table in the detection box, and is used to detect the working condition of the radial force on the end of the push rod in the gear-driven electric cylinder. The industrial camera, the vibration motor and the intelligent temperature controller are all fixedly connected to the control box, and the lens of the industrial camera faces the push rod in the gear-driven electric cylinder;

[0009] The high temperature simulation mechanism includes an air filter, a square cylinder, a plurality of electric heating wires, and a plurality of cooling fans. The outer walls of the two air filters are respectively closed and fixedly connected in the air heating chamber. The square cylinder is arranged between the two air heating chambers, and the outer wall of the square cylinder and the inner wall of the air heating chamber are closed and fixedly connected. The left and right openings of the square cylinder are respectively aligned with the two air filters, and a plurality of the electric heating wires are densely arranged and installed in the square cylinder. A plurality of cooling fans are arranged on the left side of the two air filters, and the cooling fan is fixedly connected to the push cylinder placement table.

[0010] Preferably, an exhaust guide box is fixedly connected to the upper left side of the air heating chamber, the inner cavity opening below the exhaust guide box is connected to the periphery of several cooling fans, and the right end face of the exhaust guide box is provided with several strip exhaust holes, and the several strip exhaust holes are arranged in parallel and equidistantly in sequence, and the inner widths of the several strip exhaust holes are consistent.

[0011] Preferably, the load assembly includes an internal threaded cylinder, two circular rings, two rectangular frames and a plurality of counterweights, the internal threaded cylinder is threadedly mounted on a screw at the end of a push rod in a gear-driven electric cylinder, the two circular rings are rotatably mounted on both sides of the internal threaded cylinder, and the two rectangular frames are fixedly mounted on the lower sides of the two circular rings, the width of the counterweight is the same as the inner width of the rectangular frames, and two symmetrical grooves are provided on both sides below the counterweight, the lower frame frames of the two rectangular frames are respectively engaged with the inner cavities of the two grooves below the counterweight, and two symmetrical positioning blocks are fixedly connected to both sides above the counterweight, and the two positioning blocks on the counterweight correspond to the positions of the two grooves on the counterweight.

[0012] Preferably, the clamping mechanism includes a hydraulic cylinder, two guide cylinders, two guide columns and a pressure plate, a rubber pad is provided on the lower surface of the pressure plate, the two guide cylinders are respectively arranged in parallel on both sides of the hydraulic cylinder, and the cylinder body and the two guide cylinders in the hydraulic cylinder are vertically fixedly connected to the top surface of the detection box, the upper ends of the two guide columns are respectively vertically telescopically installed in the two guide cylinders, and the lower ends of the two guide columns and the lower end of the piston rod in the hydraulic cylinder are vertically fixedly connected to the upper surface of the pressure plate.

[0013] Preferably, a heat insulation cover is fixedly connected to the periphery of the cylinder body in the hydraulic oil cylinder, the heat insulation cover is provided with heat dissipation holes, the heat dissipation holes are higher than the top surface of the detection box, and the heat insulation cover and the detection box are fixedly connected.

[0014] Preferably, a box door is slidably installed on one side of the detection box, and sliding bars are fixedly connected to the upper and lower sides of the box door. Slide grooves are provided on the upper and lower sides of the front opening of the inner cavity of the detection box, and the box door is slidably connected to the two slide groove cavities on the detection box through two sliding bars.

[0015] Preferably, a plurality of rubber vibration isolators are densely arranged in a matrix between the upper surface of the control box and the lower bottom surface of the detection box, and a control panel is provided on one side of the control box.

[0016] Preferably, a magnet bar is fixedly connected to the inner end surface of the box door, and the box body of the detection box is made of stainless steel that can attract magnets.

[0017] Preferably, a vacuum glass observation window is fixedly connected to the box door.

[0018] Preferably, an anti-slip pad is provided on the upper surface of the push cylinder placement table.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) Accurately restore the actual working conditions

[0021] The present invention can accurately simulate the high temperature and vibration complex environment within the same detection process, overcoming the deficiency that the traditional step-by-step test is difficult to reproduce the actual working conditions; a single detection can simulate the high temperature and vibration working conditions of the gear-driven electric cylinder in the actual scene, so that the detection data is more in line with the actual operating conditions, and provide a reliable basis for accurately evaluating the performance of the gear-driven electric cylinder; thereby, an in-depth insight into the working characteristics of the gear-driven electric cylinder under complex working conditions can be obtained, the product design can be optimized in a targeted manner, the product reliability can be enhanced, the failure rate can be reduced, the maintenance and downtime can be reduced, and the production efficiency and product quality can be improved.

[0022] 2) Precision temperature control

[0023] The present invention has high temperature control accuracy in high-temperature environments, can accurately increase the temperature and maintain a constant temperature according to a preset temperature curve, and the temperature error is extremely small. This ensures that the temperature conditions of the gear-driven electric cylinder are stable and accurate during high-temperature detection, avoids temperature fluctuations interfering with the accuracy of the test results, and makes the detection of indicators such as material properties, sealing and transmission efficiency of the gear-driven electric cylinder under high temperature more reliable. It can promptly detect potential problems of the gear-driven electric cylinder at high temperatures, such as thermal deformation of components and failure of lubricating oil, and provide strong support for optimizing the high-temperature adaptability of the product.

[0024] In addition, during the testing process, the unique exhaust guide box design of the air heating chamber of the push cylinder placement table plays a key role; the strip exhaust holes on the right end face are set with differentiated internal heights according to different positions, which prompts the air in the exhaust guide box to be more inclined to be discharged from the upper exhaust holes; with the help of the attraction of the strip exhaust holes and the natural rising force of the hot air, the problem of uneven heat distribution caused by the position of the air inlet is effectively solved, so that the heat in the inner cavity of the test box can be evenly dispersed; this not only ensures the stability and consistency of high-temperature environment simulation, avoids the adverse effects of local overheating or overcooling areas on detection accuracy, but also provides a balanced thermal environment for various parts of the gear-driven electric cylinder during high-temperature testing, ensures the accuracy and reliability of the detection of various performance indicators, further improves the overall detection quality and data validity, and provides a more accurate basis for the high-temperature adaptability evaluation of the gear-driven electric cylinder, which helps to more accurately grasp the characteristics of the product under high-temperature conditions, so as to carry out targeted optimization and improvement.

[0025] 3) Detection efficiency is significantly improved

[0026] Compared with the traditional detection technology that requires switching between different high-temperature detection equipment and vibration detection equipment, and repeated installation and debugging of gear-driven electric cylinders, the present invention can complete high-temperature and vibration composite working condition detection in the same gear-driven electric cylinder experimental reliability detection device and detection process, greatly simplifying the detection process and significantly shortening the detection time; it can complete comprehensive detection of gear-driven electric cylinders in a shorter period of time, accelerate the product development process, quickly bring qualified products to market, and enhance market competitiveness; at the same time, efficient detection can also help improve the utilization rate of detection equipment, reduce detection costs, and create more considerable economic benefits for enterprises.

[0027] 4) Accurate radial force detection: The existing technology may not be accurate enough or lacks systematic design for the detection method of the radial force on the end of the push rod of the gear-driven electric cylinder. The present invention adopts a unique load component design, in which the internal threaded barrel is connected to the screw at the end of the push rod, and cooperates with a rectangular frame with increase or decrease of counterweight blocks. It can accurately adjust and control the radial pressure on the end of the push rod, and can monitor in real time the various performance indicators of the electric cylinder and the state changes of the push rod under such radial force conditions, thereby providing a more accurate and systematic detection method for studying the reliability of the electric cylinder under radial force conditions.

[0028] 5) Component stability protection: For key components in the reliability test device for gear-driven electric cylinder experiments, such as hydraulic cylinders, multiple thermal insulation and heat dissipation measures such as heat insulation covers, heat dissipation holes, heat dissipation fans and heat dissipation fins are adopted to effectively reduce the impact of high temperature environment and ensure its long-term stable operation; at the same time, rubber vibration isolators are arranged in a matrix to reduce external vibration interference and the impact of the vibration motor on other components when working; the existing technology may not be comprehensive enough in considering the stability protection of these key components, which may easily lead to component failures due to factors such as high temperature or vibration, affecting the accuracy of the test results and the continuity of the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 is a partial cross-sectional view of the present invention;

[0031] Figure 3 It is a schematic diagram of the inner structure of the box door in the present invention;

[0032] Figure 4 The present invention Figure 2 The enlarged view of the part in the middle circle;

[0033] Figure 5 is a schematic diagram of the structure of the load component in the present invention;

[0034] Figure 6 It is a structural schematic diagram of the high temperature simulation mechanism in the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the exhaust guide box in the present invention;

[0036] Figure 8 It is a cross-sectional view of the exhaust guide box in the present invention.

[0037] In the figure: 1. control box; 101. control panel; 2. test box; 201. push cylinder placement table; 202. box door; 203. slider bar; 204. slide slot; 205. magnet bar; 206. vacuum glass observation window; 207. air heating chamber; 208. anti-skid pad; 209. air inlet; 3. clamping mechanism; 301. hydraulic cylinder; 302. guide cylinder; 303. guide column; 304. pressure plate; 305. rubber pad; 306. heat shield; 307. air heating chamber; 208. anti-skid pad; 209. air inlet; 308. anti-skid pad; 309. air inlet; 309. anti-skid pad; 301. hydraulic cylinder; 302. guide cylinder; 303. guide column; 304. pressure plate; 305. rubber pad; 306. heat shield; 307. air heating chamber; 208. anti-skid pad; 307 ... 07. Heat dissipation holes; 4. Load assembly; 401. Internally threaded cylinder; 402. Circular ring; 403. Rectangular frame; 404. Counterweight; 405. Slot; 406. Positioning block; 5. Industrial camera; 6. Vibration motor; 7. Rubber isolator; 8. High temperature simulation mechanism; 801. Air filter; 802. Square cylinder; 803. Electric heating wire; 804. Cooling fan; 805. Exhaust guide box; 806. Strip exhaust holes; 9. Intelligent temperature controller. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figure 1-Figure 8 As shown, a reliability detection device for gear-driven electric cylinder experiments includes a control box 1, a detection box 2, a clamping mechanism 3, a load assembly 4, two industrial cameras 5, a vibration motor 6, a plurality of rubber isolators 7, a high temperature simulation mechanism 8 and an intelligent temperature controller 9.

[0040] refer to Figure 1 and Figure 2 , control box 1, a battery and a programmable controller are arranged in the control box 1, and the battery and the programmable controller are connected to the industrial camera 5, the vibration motor 6, the electric heating wire 803 in the high-temperature simulation mechanism 8 and the intelligent temperature controller 9 in sequence through wires respectively, the battery is connected to the external power supply through wires, and a control panel 101 is fixedly connected to the outer wall of one side of the control box 1, and a display screen for real-time display of the current detection link, key parameters and fault alarm information is fixedly connected to the control panel 101. The battery in the control box 1 can not only be connected to the external power supply through a wire to realize charging, but also has the function of short-term power supply for the entire reliability detection device for gear-driven electric cylinder experiments in the event of a sudden power outage of the external power supply, thereby ensuring that the detection process will not interrupt data collection or cause equipment damage due to accidental power outages.

[0041] refer to Figure 1 , Figure 2 and Figure 3A push cylinder placement platform 201 is fixedly installed on the left side of the inner cavity of the detection box 2. The upper surface of the push cylinder placement platform 201 is used to horizontally place the gear-driven electric cylinder to be detected. The end of the push rod in the gear-driven electric cylinder is suspended and arranged on the right side of the inner cavity of the detection box 2. A box door 202 is installed in translation in the front opening of the inner cavity of the control box 1. Sliding bars 203 are symmetrically installed on the upper and lower sides of the box door 202. Two slide grooves 204 are symmetrically arranged on the upper and lower inner walls of the front opening of the inner cavity of the control box 1, and the two sliding bars 203 on the upper and lower sides of the box door 202 are respectively slidably installed in the slide grooves 204 on the upper and lower inner walls of the front opening of the inner cavity of the control box 1. A magnet strip 205 is fixedly installed on the inner wall of the box door 202, and the box body of the detection box 2 is made of stainless steel that can attract magnets. When the left side of the magnet strip 205 and the detection box 2, the left inner walls of the box door 202 are in contact with each other, the box door 202 completely covers and seals the front opening of the inner cavity of the control box 1, and when the right side of the magnet strip 205 and the right inner wall of the detection box 2 are in contact with each other, the box door 202 completely opens the front opening of the inner cavity of the control box 1, and a vacuum glass observation window 206 is fixedly connected to the box door 202. A layer of heating wire or anti-fog coating is fixedly arranged around the vacuum glass observation window 206 of the box door 202 to prevent fog from appearing on the glass surface and affecting observation during high and low temperature tests, and for the opening and closing operation of the box door 202, a power-assisting handle is fixedly installed on the outer end face of the box door 202 to facilitate the operator to easily open and close the box door 202, and a sealing rubber strip is added to the edge of the box door 202 to further enhance the sealing performance and ensure the stability of the internal temperature of the detection box 2 during high and low temperature tests.

[0042] refer to Figure 4 The clamping mechanism 3 is mainly composed of a hydraulic cylinder 301, two guide cylinders 302, two guide columns 303, a pressure plate 304 and a rubber pad 305. The two guide cylinders 302 are respectively arranged in parallel on both sides of the hydraulic cylinder 301. The two guide cylinders 302 and the hydraulic cylinder 301 are both vertically fixedly connected to the top surface of the detection box 2, and the piston rod in the hydraulic cylinder 301 is vertically arranged downward. The top ends of the two guide columns 303 are respectively vertically telescopically installed in the two guide cylinders 302, the lower ends of the two guide columns 303 and the end of the piston rod in the hydraulic cylinder 301 are both vertically fixedly connected to the upper surface of the pressure plate 304, and the pressure plate 304 is arranged directly above the push cylinder placement table 201, and the upper surface of the rubber pad 305 and the upper surface of the pressure plate 304 are fitted and connected to each other.

[0043] As is known to all, the general gear-driven electric cylinder has a roughly rectangular shape. One side of the cylinder body of the gear-driven electric cylinder is placed against the inner wall of the rear side of the flat surface of the detection box 2, and is in contact with the upper surface of the push cylinder placement table 201. The push rod in the gear-driven electric cylinder can be placed horizontally to the right along the push cylinder placement table 201, and then the piston rod in the hydraulic cylinder 301 is moved vertically downward to push the pressure plate 304 to drive the rubber pad 305 to fix and squeeze the cylinder body of the gear-driven electric cylinder onto the push cylinder placement table 201. If the cylinder body of the gear-driven electric cylinder to be tested is not a regular rectangular shape, a clamp with a rectangular shape can be used. The cylinder body in the fixed gear-driven electric cylinder is then held and fixed using the hydraulic cylinder 301, and the pressure plate 304 drives the rubber pad 305 to directional-fix the cylinder body in the fixed gear-driven electric cylinder in the fixture on the push cylinder placement table 201. In addition to the clamping and fixing method using a rectangular fixture, a set of replaceable and adjustable clamping tooling can be designed. The tooling is equipped with claws or grooves of various shapes and sizes. Through simple methods such as screw adjustment and dovetail groove sliding, it can quickly adapt to electric cylinder bodies of different shapes and sizes, and ensure the firmness and centering of the clamping, so that the gear-driven electric cylinder will not be displaced or deflected during the detection process, affecting the accuracy of the detection results.

[0044] refer to Figure 4 Since the gear-driven electric cylinder needs to be tested in a high-temperature environment in the later stage, in order to reduce the impact of the high-temperature environment on the hydraulic cylinder 301, the present invention seals and fixes the periphery of the cylinder body in the hydraulic cylinder 301 with a heat insulation cover 306, and the upper end of the heat insulation cover 306 passes upward through the top of the detection box 2. The heat insulation cover 306 and the detection box 2 are closed and fixedly connected, and the outer ring of the top of the heat insulation cover 306 is densely provided with a plurality of heat dissipation holes 307, and the heat dissipation holes 307 are arranged above the detection box 2. In addition, a small heat dissipation fan can be fixedly installed on the top of the heat insulation cover 306 to actively discharge the heat generated by the operation of the hydraulic cylinder 301. At the same time, heat dissipation fins are added inside the heat insulation cover 306 to increase the heat dissipation area, improve the heat dissipation efficiency, further reduce the impact of the high-temperature environment on the hydraulic cylinder 301, and ensure its long-term stable operation.

[0045] refer to Figure 5The load component 4 is suspended and arranged on the right side of the push cylinder placement table 201 in the detection box 2, and is mainly used to detect the working condition of the radial force on the end of the push rod in the gear-driven electric cylinder. The end of the push rod in the gear-driven electric cylinder detected in the present invention is coaxially fixedly connected with a screw rod. The load component 4 is mainly composed of an internal threaded barrel 401, two rings 402 and a plurality of counterweights 404. The internal threaded barrel 401 is threadedly installed on the screw rod at the end of the push rod in the gear-driven electric cylinder. The two rings 402 are rotatably installed on both sides of the internal threaded barrel 401, and a rectangular frame 403 is fixedly installed on the lower side of the two rings 402. The width of the counterweight 404 is the same as the inner width of the rectangular frame 403, and two mutually opposite counterweights are arranged on both sides below the counterweight 404. The slots 405 of the scale, the lower frames of the two rectangular frames 403 are respectively interlocked with the inner cavities of the two slots 405 below the counterweight block 404, that is, the counterweight block 404 can be installed below the two rectangular frames 403 below the internal threaded tube 401 through the two slots 405 below it. Secondly, two symmetrical positioning blocks 406 are fixedly connected to the upper sides of the counterweight block 404, and the two positioning blocks 406 on the counterweight block 404 correspond to the positions of the two slots 405 on the counterweight block 404, respectively, and are mainly used for the two counterweight blocks 404 to be quickly vertically connected together. The more counterweight blocks 404 are placed in the two rectangular frames 403 below the internal threaded tube 401, the greater the radial pressure on the end of the push rod in the gear-driven electric cylinder.

[0046] refer to Figure 1 , Figure 2 and Figure 4 The shells of the two industrial cameras 5 are fixedly installed on the outer side of the rear wall of the detection box 2, and the lenses of the two industrial cameras 5 are arranged in the detection box 2, and the lenses of the industrial cameras 5 are arranged in advance, facing the push rod in the gear-driven electric cylinder, which is mainly used to collect pictures of the push rod in the gear-driven electric cylinder in real time, and to detect whether the push rod in the gear-driven electric cylinder is bent. In addition to collecting pictures of the push rod in the gear-driven electric cylinder in real time, the industrial camera 5 is also equipped with corresponding image analysis software. The software has a built-in image recognition algorithm, which can automatically determine whether the push rod is bent and the degree and position of the bending, and feed back these analysis results to the programmable controller in the control box 1 in real time, so as to realize automatic push rod status monitoring and fault warning functions. At the same time, a ring-shaped light panel for assisting the industrial camera 5 lighting is added to the inner top surface of the detection box 2 to ensure that the image of the push rod can be clearly collected under different lighting conditions in the detection box 2, especially the fog and other conditions that may occur during high temperature testing affect the light.

[0047] refer to Figure 1 and Figure 2The vibration motor 6 is installed on the top of the detection box 2, and is mainly used to simulate the vibration state of the detection box 2, and is used to detect the gear-driven electric cylinder in the vibration state. The vibration motor 6 should have a wide-band, high-precision vibration frequency and amplitude adjustment function, and can be connected to the programmable controller in the control box 1. According to different pre-set detection conditions, the required vibration parameters can be accurately output. At the same time, at the connection part between the vibration motor 6 and the detection box 2, a flexible connection method such as an elastic coupling can be used to reduce the rigid impact during the vibration transmission process, avoid unnecessary damage to the detection box 2 and other internal components, and help improve the accuracy of vibration simulation.

[0048] refer to Figure 1 and Figure 2 , several rubber vibration isolators 7 are arranged in a dense matrix, the appearance of the detection box 2 is a rectangular parallelepiped, the detection box 2 is installed above the control box 1 through several rubber vibration isolators 7, the upper and lower ends of the rubber vibration isolators 7 are fixedly connected to the detection box 2 and the control box 1 respectively, and the models and sizes of several rubber vibration isolators 7 are the same. In a static state, several rubber vibration isolators 7 can stably place the detection box 2 horizontally on the control box 1, which is mainly used to reduce the interference of external vibration on the detection process in the detection box 2 and the influence of the vibration motor 6 of the detection box 2 on the control box 1 when it is working.

[0049] refer to Figure 6An air heating chamber 207 is arranged in the push cylinder placement platform 201, and an anti-skid pad 208 for placing the gear-driven electric cylinder is installed on the top of the push cylinder placement platform 201. The high temperature simulation mechanism 8 is arranged in the air heating chamber 207. The high temperature simulation mechanism 8 is mainly composed of two air filters 801, a square cylinder 802, a plurality of electric heating wires 803 and a plurality of cooling fans 804. In addition, a plurality of air inlet holes 209 are densely arranged on the right side of the air heating chamber 207 in the push cylinder placement platform 201. The air hole 209 is mainly used to connect the air heating chamber 207 and the inner cavity of the detection box 2 to each other. The outer walls of the two air filters 801 are respectively and closedly fixedly connected to the two sides of the air heating chamber 207 in the push cylinder placement platform 201. The square tube 802 is arranged between the two air filters 801, and the outer wall of the square tube 802 is closed and fixedly connected to the inner wall of the air heating chamber 207 in the push cylinder placement platform 201. The left and right openings of the square tube 802 are respectively aligned with the two air filters 801, and a plurality of electric The heating wires 803 are densely arranged and installed in the square cylinder 802. Several cooling fans 804 are arranged on the left side of the two air filters 801 and fixedly installed on the upper left side of the push cylinder placement table 201. They are mainly used to extract and discharge the air in the air heating chamber 207 into the detection box 2, and to extract the air in the detection box 2 into the air heating chamber 207, so as to realize the circulation of the air in the detection box 2 and the air heating chamber 207. The circulating air has a more uniform air temperature distribution. When the circulating air flows through the inner cavity of the square cylinder 802 in the air heating chamber 207, several energized electric heating wires 803 in the square cylinder 802 can actively heat the contacted air, and need to be used with the intelligent temperature controller 9. For the air filter 801, a filter element with high-efficiency filtration and low-resistance characteristics can be selected. The function of regularly reminding to replace the filter element can also be integrated into the control system of the control box 1 to ensure that the air entering the air heating chamber 207 and the detection box 2 is clean, and to prevent dust and other impurities from affecting the normal operation of the electric heating wire 803.

[0050] refer to Figure 7 and Figure 8An exhaust guide box 805 is fixedly connected to the upper left side of the air heating chamber 207 in the push cylinder placement table 201. The inner cavity opening below the exhaust guide box 805 is connected to the periphery of a plurality of cooling fans 804. A plurality of strip exhaust holes 806 are arranged on the right end face of the exhaust guide box 805. The plurality of strip exhaust holes 806 are arranged in parallel at equal distances in sequence. The inner widths of the plurality of strip exhaust holes 806 are consistent. The exhaust guide box 805 is mainly used for initially mixing the air exhausted by the plurality of cooling fans 804. Because the plurality of air inlet holes 209 in the air heating chamber 207 are arranged at On the right side of the push cylinder placement table 201, if the inner heights of several strip exhaust holes 806 remain consistent, the air discharged from the lower strip exhaust holes 806 is easier to be attracted and flow, and the air flowability above is poor. For this reason, the lower the inner height position of the several strip exhaust holes 806, the smaller the relative inner height, that is, the inner size of the upper strip exhaust hole 806 is larger, and the air in the exhaust guide box 805 is more inclined to the upper exhaust hole 806 for exhaust. Combined with the attraction of several strip exhaust holes 806 and the lift of hot air relative to cold air, the heat in the inner cavity of the detection box 2 is dispersed more evenly.

[0051] refer to Figure 1 and Figure 2 The intelligent temperature controller 9 is fixedly installed on the top of the detection box 2. The probe of the temperature sensor in the intelligent temperature controller 9 is set in the inner cavity of the detection box 2 to monitor the temperature in the inner cavity of the detection box 2 in real time. The intelligent temperature controller 9 is mainly used to control the on and off of the circuits in several electric heating wires 803. It also has the function of recording and analyzing the temperature curve. The temperature change during each high and low temperature test is plotted into a curve to facilitate subsequent viewing and analysis of the test data. At the same time, accurate temperature adjustment is performed according to the preset temperature error range to ensure that the accuracy of temperature control is within the allowable range and meet the strict test standard requirements.

[0052] In this embodiment, the programmable controller is the control core of the entire reliability detection device for the gear-driven electric cylinder experiment. It pre-writes the control programs corresponding to various detection processes. The control program writing and detection process setting are as follows:

[0053] 1). Basics of program architecture

[0054] Programmable controllers use special programming software for program writing. Their program architecture is usually built based on programming languages ​​such as ladder diagrams, statement lists or function block diagrams. For the control program of this reliability test device for gear-driven electric cylinder experiments, different functional modules will be divided first, corresponding to high and low temperature tests, vibration tests and other related test operations. Each module has clear logic and execution sequence to ensure that the entire test process proceeds in an orderly manner.

[0055] 2). High temperature test stage

[0056] The triggering conditions for starting the low-temperature test will be set in the program, such as the operator pressing the "high-temperature test start" button through the control panel 101 or triggering according to the preset timing start mechanism. Once triggered, the programmable controller will send a control signal to the relevant components in the high-temperature simulation mechanism 8, first controlling the cooling fan 804 to start, so that it runs at a certain speed, and the air in the detection box 2 is drawn into the air heating chamber 207. The programmable controller will control the electric heating wire 803 to start heating according to the program logic, and gradually increase the power of the electric heating wire 803, so that the air in the air heating chamber 207 is quickly heated. The hot air circulates into the detection box 2 under the promotion of the cooling fan 804, so that the temperature in the box increases. Similarly, the programmable controller continuously receives the temperature sensor signal, compares it with the preset high-temperature target value, and accurately adjusts the power of the electric heating wire 803 and the speed of the cooling fan 804, etc., until the temperature in the detection box 2 is stabilized within the high-temperature target range, and the performance detection and data collection of the gear-driven electric cylinder under high-temperature environment are started.

[0057] It is further supplemented that a small air-conditioning refrigerator used for refrigeration in the prior art can be fixedly installed on one side of the square tube 802 between the two air filters 801. As long as it is used to cool the test box 2, the gear-driven electric cylinder can be tested in a low-temperature environment, or low-temperature and high-temperature cycle tests can be performed.

[0058] 3). Parameter initialization

[0059] Before starting the vibration test, the operator can set the key parameters of the vibration motor 6, such as the vibration frequency, amplitude and test duration, in the programmable controller program through the control panel 101, and the programmable controller stores these set values ​​and serves as the basis for subsequent control and judgment;

[0060] Vibration start and control: When the "Vibration Test Start" button is pressed, the programmable controller sends a start signal to the vibration motor 6. At the same time, according to the set vibration frequency and amplitude parameters, the built-in control algorithm accurately controls the working state of the vibration motor 6 to generate vibration that meets the requirements. During the vibration process, the programmable controller will monitor the vibration time in real time and compare it with the preset test duration. When the set time is reached, it automatically sends a signal to stop the vibration motor 6 and complete the vibration test.

[0061] 4). Industrial camera 5 image acquisition coordination

[0062] The programmable controller works in coordination with the two industrial cameras 5 and sets the shooting interval, shooting duration and other parameters of the industrial cameras 5. During the entire detection process, a trigger signal is sent to the industrial camera 5 at the set time rhythm, so that it can capture images of the push rod in the gear-driven electric cylinder, and then receive the image data signal returned by the industrial camera 5, and pass this data to the subsequent image analysis module for processing to determine whether the push rod has any abnormal conditions such as bending.

[0063] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of 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 reliability testing device for a gear-driven electric cylinder experiment, characterized in that: It comprises a control box (1), a detection box (2), a clamping mechanism (3) for fixing a cylinder body of a gear-driven electric cylinder, a load assembly (4), an industrial camera (5) for monitoring a detection process, a vibration motor (6) for providing a vibration source, a high temperature simulation mechanism (8) for simulating a high temperature environment, and an intelligent temperature controller (9); The detection box (2) is connected to the control box (1); a push cylinder placement table (201) for horizontally placing the cylinder body of the gear-driven electric cylinder is provided inside the detection box (2); the push cylinder placement table (201) has an air heating chamber (207); a plurality of air inlet holes (209) are densely arranged on the right side of the air heating chamber (207); The clamping mechanism (3) is installed directly above the push cylinder placement platform (201) in the detection box (2); the load assembly (4) is vertically suspended on the end of the push rod of the gear-driven electric cylinder on the right side of the push cylinder placement platform (201) in the detection box (2) and is used to detect the working condition of the radial force applied to the end of the push rod in the gear-driven electric cylinder; the industrial camera (5), the vibration motor (6) and the intelligent temperature controller (9) are all fixedly connected to the control box (1), and the lens of the industrial camera (5) faces the push rod in the gear-driven electric cylinder; The high temperature simulation mechanism (8) comprises an air filter (801), a square tube (802), a plurality of electric heating wires (803), and a plurality of cooling fans (804); the outer walls of the two air filters (801) are respectively and closedly fixedly connected to the air heating chamber (207); the square tube (802) is arranged between the two air heating chambers (207); and the outer wall of the square tube (802) and the inner wall of the air heating chamber (207) are respectively and closedly fixedly connected; the left and right openings of the square tube (802) are respectively aligned with the two air filters (801); and the plurality of electric heating wires (803) are densely arranged and installed in the square tube (802); the plurality of cooling fans (804) are arranged on the left side of the two air filters (801); and the cooling fan (804) is fixedly connected to the push cylinder placement table (201).

2. The reliability testing device for gear-driven electric cylinder experiments according to claim 1 is characterized in that: An exhaust guide box (805) is fixedly connected to the upper left side of the air heating chamber (207); an inner cavity opening below the exhaust guide box (805) is connected to the periphery of a plurality of cooling fans (804); a plurality of strip exhaust holes (806) are arranged on the right end face of the exhaust guide box (805); the plurality of strip exhaust holes (806) are arranged in parallel and equidistantly in sequence; and the inner widths of the plurality of strip exhaust holes (806) are consistent.

3. The reliability testing device for gear-driven electric cylinder experiments according to claim 1 is characterized in that: The load assembly (4) comprises an internal threaded barrel (401), two circular rings (402), two rectangular frames (403) and a plurality of counterweights (404); the internal threaded barrel (401) is threadedly mounted on a screw at the end of a push rod in a gear-driven electric cylinder; the two circular rings (402) are rotatably mounted on both sides of the internal threaded barrel (401), and the two rectangular frames (403) are fixedly mounted on the lower sides of the two circular rings (402), respectively; the width of the counterweight (404) and the rectangular frames (403) are equal to the width of the counterweight (404). The inner widths of the counterweight (404) are the same, and two mutually symmetrical slots (405) are arranged on both sides below the counterweight (404), the lower frames of the two rectangular frames (403) are respectively engaged with the inner cavities of the two slots (405) below the counterweight (404), and two mutually symmetrical positioning blocks (406) are fixedly connected to both sides above the counterweight (404), and the two positioning blocks (406) on the counterweight (404) correspond to the positions of the two slots (405) on the counterweight (404).

4. The reliability testing device for gear-driven electric cylinder experiments according to claim 1 is characterized in that: The clamping mechanism (3) comprises a hydraulic cylinder (301), two guide cylinders (302), two guide columns (303) and a pressure plate (304); a rubber pad (305) is provided on the lower surface of the pressure plate (304); the two guide cylinders (302) are respectively arranged in parallel on both sides of the hydraulic cylinder (301); the cylinder body in the hydraulic cylinder (301) and the two guide cylinders (302) are both vertically fixedly connected to the top surface of the detection box (2); the upper ends of the two guide columns (303) are respectively vertically telescopically installed in the two guide cylinders (302); and the lower ends of the two guide columns (303) and the lower end of the piston rod in the hydraulic cylinder (301) are both vertically fixedly connected to the upper surface of the pressure plate (304).

5. The reliability testing device for gear-driven electric cylinder experiments according to claim 4 is characterized in that: A heat insulation cover (306) is fixedly connected to the periphery of the cylinder body of the hydraulic oil cylinder (301), and a heat insulation cover (306) is provided with a heat dissipation hole (307). The heat dissipation hole (307) is higher than the top surface of the detection box (2), and the heat insulation cover (306) and the detection box (2) are fixedly connected.

6. The reliability testing device for gear-driven electric cylinder experiments according to claim 1 is characterized in that: A box door (202) is slidably mounted on one side of the detection box (2); slider bars (203) are fixedly connected to the upper and lower sides of the box door (202); slide grooves (204) are provided on the upper and lower sides of the front opening of the inner cavity of the detection box (2); and the box door (202) is slidably connected to the inner cavities of two slide grooves (204) on the detection box (2) via two slider bars (203).

7. The reliability testing device for gear-driven electric cylinder experiments according to claim 1 is characterized in that: A plurality of rubber vibration isolators (7) are densely arranged in a matrix between the upper surface of the control box (1) and the lower bottom surface of the detection box (2), and a control panel (101) is provided on one side of the control box (1).

8. The reliability testing device for gear-driven electric cylinder experiments according to claim 6 is characterized in that: A magnet strip (205) is fixedly connected to the inner end surface of the box door (202), and the box body of the detection box (2) is made of stainless steel that can attract magnets.

9. The reliability testing device for gear-driven electric cylinder experiments according to claim 6 is characterized in that: A vacuum glass observation window (206) is fixedly connected to the box door (202).

10. The reliability testing device for gear-driven electric cylinder experiments according to claim 1, characterized in that: An anti-slip pad (208) is provided on the upper surface of the push cylinder placement platform (201).

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