High-temperature and high-speed chain abrasion testing machine

Abstract

The invention discloses a high-temperature and high-speed chain abrasion testing machine, and relates to the technical field of mechanical testing equipment. The motorized spindle assembly comprises a fixed motor and a movable motor, chain wheels are arranged at the two ends of a fixed motorized spindle of the fixed motor and the two ends of a movable motorized spindle of the movable motor, and a testing chain is wound around the peripheries of the two chain wheels on the same side; the test oil tank is internally provided with a replaceable oil brush or an oil nozzle so as to be selectively installed according to the test working conditions of oil dripping, oil spraying or oil immersion, the test oil tank is internally provided with an oil level detection sensor and a liquid level proximity switch which are used for measuring the liquid level surface under the oil immersion working condition, and the liquid level proximity switch is used for measuring the oil accumulation condition of the test oil tank under the oil spraying working condition; a fixed part of the loading device is arranged on the workbench, and a moving part of the loading device is connected with a moving motor so as to load tension on the test chain; a lubrication station; and a control device. The device can comprehensively simulate the actual service environment of the chain in a high-speed and multi-lubrication mode.

Description

Technical Field

[0001] This invention relates to the field of mechanical testing equipment technology, and more specifically, to a high-temperature, high-speed chain wear testing machine. Background Technology

[0002] In existing technologies, chains, as an important mechanical transmission component, are widely used in internal combustion engines, motorcycles, agricultural machinery, automated production lines, and other fields. The operational stability and service life of the chain directly affect the overall performance and safety of the host machine. With the development of modern machinery towards lightweight and high-efficiency designs, the operating speed of chains is constantly increasing, with some high-speed engine chains exceeding 10,000 rpm and even reaching over 15,000 rpm. At the same time, chains are subjected to high temperature, high pressure, and strong vibration environments for extended periods, with complex lubrication conditions, making them highly susceptible to fatigue wear, pitch elongation, and fracture failure.

[0003] Currently, commercially available chain wear testing equipment generally has the following limitations: most equipment is only suitable for low-speed conditions (usually ≤6000rpm), which makes it difficult to meet the testing needs of new high-speed chains. Moreover, the lubrication method is singular, with most equipment only dripping oil or simple spraying, which cannot fully simulate chain wear under various lubrication modes such as oil immersion and high-pressure oil spraying in actual applications.

[0004] In summary, how to provide a wear testing machine that can comprehensively simulate the actual service environment of chains under high speed and multiple lubrication modes, so as to support the design optimization and life prediction of high-performance chains, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a high-temperature and high-speed chain wear testing machine, which is a wear testing machine that can comprehensively simulate the actual service environment of the chain under high speed and multiple lubrication modes, so as to support the design optimization and life prediction of high-performance chains.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-temperature, high-speed chain wear testing machine, comprising:

[0008] A horizontal frame, comprising a worktable and linear guide rails disposed on the worktable;

[0009] An electric spindle assembly includes a fixed motor fixedly mounted on the worktable and a movable motor slidably mounted on the linear guide rail. Both ends of the fixed electric spindle of the fixed motor and the movable electric spindle of the movable motor are provided with sprockets, and a test chain is wound around the outer periphery of the two sprockets on the same side.

[0010] A test oil tank is located on opposite sides of the electric spindle assembly. The sprocket and the test chain are both located inside the test oil tank. The test oil tank is equipped with replaceable oil brushes or nozzles for selective installation according to the test conditions of dripping, spraying, or immersion. The test oil tank is equipped with an oil level detection sensor and a liquid level proximity switch for measuring the liquid level under immersion conditions. The liquid level proximity switch is used to measure the oil accumulation in the test oil tank under spraying conditions.

[0011] The loading device has a fixed part mounted on the worktable, and the moving part of the loading device is connected to the moving motor to apply tension to the test chain;

[0012] A lubrication station is spaced apart on one side of the horizontal frame. The lubrication station is connected to the oil inlet of the test oil tank. The bottom of the test oil tank is provided with an oil return port, which is connected to the lubrication station.

[0013] The control device includes the fixed motor, the mobile motor, the oil level detection sensor, the liquid level proximity switch, the loading device, and the lubrication station, all of which are connected to the control device.

[0014] In one embodiment, the electric spindle assembly further includes lubrication and cooling lines, and both the fixed electric spindle and the movable electric spindle are equipped with encoders.

[0015] In one embodiment, the test tank includes a protective assembly, which includes a tank body and a protective cover that can be detachably closed to an opening on the upper part of the tank body. An EPDM foamed rubber strip is provided at the joint between the tank body and the protective cover. The test chain is inserted into the tank body through the opening.

[0016] In one embodiment, the protective assembly includes a tension adjustment device that contacts the outer ring of the test chain. The tension adjustment device is used to adjust the test chain vertically according to its dimensions to ensure the tension of the test chain.

[0017] In one embodiment, a temperature detection sensor is provided inside the oil tank body. The temperature detection sensor is connected to the control device and is used to monitor the temperature of the test chain surface or the surrounding environment in real time.

[0018] In one embodiment, a noise detection sensor is provided on the outside of the oil tank body. The noise detection sensor is connected to the control device and is used to collect the noise generated by the test chain during the test.

[0019] In one embodiment, the loading device includes two oppositely distributed reaction beams, at least two reaction rods perpendicular to the two reaction beams, a servo motor mounted on the worktable, a guide rail slider slidably mounted on the linear guide rail, a T-shaped lead screw, a force sensor, and a displacement measuring device.

[0020] The movable motor is located on one side of the reaction beam. The fixed end of the displacement measuring device is located on the fixed motor, and the measuring end of the displacement measuring device is located on the movable motor. The T-shaped lead screw includes a lead screw and a baffle. One end of the lead screw is connected to the servo motor, and the other end of the lead screw passes through the reaction beam and is perpendicularly connected to the baffle. The baffle and the reaction beam abut against each other. The force sensor is located on the reaction beam. The servo motor, the force sensor, and the displacement measuring device are all connected to the control device.

[0021] In one embodiment, an air spring is further included, one end of which abuts against the reaction beam and the other end of which abuts against the baffle.

[0022] In one embodiment, the lubrication station is equipped with an electric heater, a flow meter, and a pressure regulating valve. The electric heater is used to heat the lubricating oil to any set temperature within the range of room temperature to 200°C.

[0023] In one embodiment, the horizontal frame further includes a shock absorber disposed below the workbench, an outer cover covering the working area of ​​the workbench, and an oil mist collector disposed on top of the outer cover to recycle the generated oil mist through negative pressure adsorption.

[0024] When using the high-temperature, high-speed chain wear testing machine provided by this invention, sprockets of the same specification are mounted at both ends of the fixed electric spindle 2.8 of the fixed motor and the moving electric spindle of the moving motor. A test chain is wound around the outer periphery of the two sprockets 2.6 on the same side, forming a mechanical closed loop to complete torque loading and speed driving. The fixed motor and the moving motor can both be used as driving power sources according to the driving torque required for the test, or one can be driven by the other to reduce energy consumption. The fixed motor is fixedly mounted on the worktable, and the moving motor is mounted on the linear guide rail of the worktable. The moving part of the loading device is connected to the moving motor to apply tension to the test chain through the loading device.

[0025] Furthermore, this device offers three lubrication methods: dripping, spraying, and immersion. The oil brush or nozzle can be replaced according to test requirements. When using immersion lubrication for the test chain, an oil level sensor can be fixedly installed inside the test oil tank to control the consistent immersion depth. During the test, the liquid level is consistently controlled via the mechanical liquid level control interface inside the test oil tank and the oil level sensor, ensuring consistent immersion depth for the same type of test chain, thereby improving the reliability of the test data. When the liquid level exceeds the upper limit of the reference value, the oil level sensor sends a signal to the control device, which then activates the circulation pump in the lubrication station to pump the excess oil back into the lubrication station.

[0026] When using oil-injected lubrication for the test chain, the lubricating oil sprayed from the nozzles has a small flow rate and is in a mist-like state. When the oil level reaches the level proximity switch in the test oil tank, it triggers a feedback signal to the control device. The control device then starts the circulation pump in the lubrication station, drawing the lubricating oil from the test oil tank back into the lubrication station. This ensures that the lubricating oil in the test oil tank will not submerge the test chain during oil injection operation. After the test, the oil is recovered from the test oil tank into the lubrication station.

[0027] Meanwhile, the loading device is fixedly mounted on the workbench, providing loading force to the entire equipment. When the loading device is controlled to extend or retract, it drives the moving motor and the moving electric spindle to move synchronously, thereby applying tension to the test chain. Furthermore, the lubrication station, in conjunction with the control device, provides the test conditions required for simulating the chain's operation, thus simulating the chain's lifespan in actual applications. Since the moving motor in this application directly drives the moving electric spindle and sprocket, and controls the test chain's operation through the loading device, without any other transmission links, it ensures smooth and reliable chain transmission, enabling actual wear testing of the test chain under high-speed conditions.

[0028] In summary, the high-temperature and high-speed chain wear testing machine provided by this invention is a wear testing machine that can comprehensively simulate the actual service environment of chains under high speed and multiple lubrication modes, so as to support the design optimization and life prediction of high-performance chains. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 A schematic diagram of the high-temperature and high-speed chain wear testing machine provided by the present invention, excluding the lubrication station;

[0031] Figure 2 A schematic diagram of the structure in which the electric spindle assembly, test oil tank, and loading device are mounted on a horizontal frame;

[0032] Figure 3 This is a schematic diagram of the lubrication station structure;

[0033] Figure 4 This is a structural schematic diagram of a horizontal frame;

[0034] Figure 5 This is a cross-sectional view of the electric spindle assembly;

[0035] Figure 6 This is a schematic diagram of the electric spindle assembly.

[0036] Figure 7 This is a schematic diagram of the test fuel tank structure;

[0037] Figure 8 This is a schematic diagram of the protective component.

[0038] Figure 9 This is a schematic diagram of the loading device.

[0039] Figures 1-9 middle:

[0040] 1 is the horizontal frame; 1.1 is the shock absorber; 1.2 is the worktable; 1.3 is the outer cover; 1.4 is the oil mist collector; 1.5 is the pneumatic assembly; 1.6 is the linear guide; 2 is the electric spindle assembly; 2.1 is the fixed motor; 2.2 is the moving motor; 2.3 is the bearing; 2.4 is the encoder; 2.5 is the lubrication and cooling pipeline; 2.6 is the sprocket; 2.7 is the test chain; 2.8 is the fixed electric spindle; 2.9 is the moving electric spindle; 3 is the test oil tank; 3.1 is the protective assembly; 3.1.1 is the oil tank; 3.1.2 is the protective cover; 3 1.3 EPDM foamed rubber strip; 3.2 tension adjustment device; 3.3 oil brush; 3.4 oil nozzle; 3.5 temperature sensor; 3.6 oil level sensor; 3.7 noise sensor; 3.8 oil circulation pipeline; 3.9 liquid level proximity switch; 4 loading device; 4.1 guide rail slider; 4.2 displacement measuring device; 4.3 reaction rod; 4.4 air spring; 4.5 reaction beam; 4.6 force sensor; 4.7 T-shaped lead screw; 4.8 servo motor; 5 lubrication station. Detailed Implementation

[0041] 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.

[0042] The core of this invention is to provide a high-temperature and high-speed chain wear testing machine, which is a wear testing machine that can comprehensively simulate the actual service environment of chains under high speed and multiple lubrication modes, so as to support the design optimization and life prediction of high-performance chains.

[0043] Please refer to Figures 1 to 3 This specific embodiment provides a high-temperature, high-speed chain wear testing machine, including:

[0044] A horizontal frame 1, which includes a worktable 1.2 and a linear guide rail 1.6 mounted on the worktable 1.2;

[0045] The electric spindle assembly 2 includes a fixed motor 2.1 fixed on the worktable 1.2 and a movable motor 2.2 slidably mounted on the linear guide rail 1.6. Both ends of the fixed electric spindle 2.8 of the fixed motor 2.1 and the movable electric spindle 2.9 of the movable motor 2.2 are provided with sprockets 2.6. A test chain 2.7 is wound around the outer periphery of the two sprockets 2.6 on the same side.

[0046] The test oil tank 3 is located on opposite sides of the electric spindle assembly 2. The sprocket 2.6 and the test chain 2.7 are both located inside the test oil tank 3. The test oil tank 3 is equipped with replaceable oil brushes 3.3 or oil nozzles 3.4, which can be selectively installed according to the test conditions of dripping oil, spraying oil or immersion in oil. The test oil tank 3 is equipped with an oil level detection sensor 3.6 and a liquid level proximity switch 3.9 for measuring the liquid level under the oil immersion condition. The liquid level proximity switch 3.9 is used to measure the oil accumulation in the test oil tank 3 under the oil spray condition.

[0047] The loading device 4 has its fixed part mounted on the workbench 1.2, and its moving part is connected to the moving motor 2.2 to apply tension to the test chain 2.7.

[0048] Lubrication station 5 is spaced on one side of horizontal frame 1. Lubrication station 5 is connected to the oil inlet of test oil tank 3. Test oil tank 3 has an oil return port at the bottom, which is connected to lubrication station 5.

[0049] The control device, including the fixed motor 2.1, the moving motor 2.2, the oil level detection sensor 3.6, the liquid level proximity switch 3.9, the loading device 4, and the lubrication station 5, is connected to the control device.

[0050] In practical applications, the shape, type, and position of the horizontal frame 1, electric spindle assembly 2, test oil tank 3, loading device 4, lubrication station 5, and control device can be determined according to the actual situation and needs.

[0051] When using the high-temperature and high-speed chain wear testing machine provided by this invention, sprockets 2.6 of the same specification are mounted on both ends of the fixed electric spindle 2.8 of the fixed motor 2.1 and the moving electric spindle 2.9 of the moving motor 2.2. A test chain 2.7 is wound around the outer periphery of the two sprockets 2.6 on the same side, forming a mechanical closed loop to complete torque loading and speed driving. The fixed motor 2.1 and the moving motor 2.2 can both be used as driving power sources according to the driving torque required for the test, or one can be driven by the other to reduce energy consumption. The fixed motor 2.1 is fixedly installed on the worktable 1.2, and the moving motor 2.2 is installed on the linear guide rail 1.6 of the worktable 1.2. The moving part of the loading device 4 is connected to the moving motor 2.2 so as to apply tension loading to the test chain 2.7 through the loading device 4.

[0052] Furthermore, this device can be configured for three lubrication methods: dripping, spraying, and immersion. The oil brush 3.3 or oil nozzle 3.4 can be replaced according to test requirements. When using immersion lubrication for the test chain 2.7, an oil level sensor 3.6 can be fixedly installed inside the test oil tank 3 to control the consistent immersion depth. During the test, the liquid level is consistently controlled via the mechanical liquid level control interface inside the test oil tank 3 and the oil level sensor 3.6, ensuring consistent immersion depth for the same type of test chain 2.7 during the test, thereby improving the reliability of the test data. When the liquid level exceeds the upper limit of the reference value, the oil level sensor 3.6 sends a signal to the control device, which then controls the circulation pump of the lubrication station 5 to start, pumping the excess oil back into the lubrication station 5.

[0053] When using oil-spray lubrication for the test chain 2.7, the lubricating oil sprayed by the nozzle 3.4 has a small flow rate and is in a mist state. When the oil level reaches the level proximity switch 3.9 in the test oil tank 3, it triggers a feedback signal to the control device. The control device then starts the circulation pump in the lubrication station 5, drawing the lubricating oil from the test oil tank 3 back into the lubrication station 5. This ensures that the lubricating oil in the test oil tank 3 will not submerge the test chain 2.7 under oil-spraying conditions. After the test, the oil is recovered from the test oil tank 3 into the lubrication station 5.

[0054] Meanwhile, the loading device 4 is fixedly installed on the workbench 1.2, providing loading force for the entire equipment. When the loading device 4 is controlled to extend or retract, it drives the moving motor 2.2 and the moving electric spindle 2.9 to move synchronously, thereby applying tension to the test chain 2.7. Furthermore, the lubrication station 5, in conjunction with the control device, provides the test conditions required to simulate the test chain 2.7, thus simulating the chain's lifespan in actual applications. Since the moving motor 2.2 directly drives the moving electric spindle 2.9 and sprocket 2.6 to rotate, and controls the operation of the test chain 2.7 through the loading device 4, without any other transmission links, the smooth and reliable transmission of the chain is ensured, enabling actual wear testing of the test chain 2.7 under high-speed conditions.

[0055] In summary, the high-temperature and high-speed chain wear testing machine provided by this invention is a wear testing machine that can comprehensively simulate the actual service environment of chains under high speed and multiple lubrication modes, so as to support the design optimization and life prediction of high-performance chains.

[0056] In one embodiment, such as Figure 5 and Figure 6 As shown, the electric spindle assembly 2 also includes a lubrication and cooling pipeline 2.5, and encoders 2.4 are provided on both the fixed electric spindle 2.8 and the movable electric spindle 2.9.

[0057] It should be noted that the fixed electric spindle 2.8 and the moving electric spindle 2.9 adopt a dual-head output shaft configuration. Both the fixed electric spindle 2.8 and the moving electric spindle 2.9 have bearings 2.3 mounted on their outer peripheries and sprockets 2.6 of the same specification mounted on them. A test chain 2.7 is wound around the outer periphery of the two sprockets 2.6 on the same side to form a mechanical closed loop, completing torque loading and speed drive. This dual-spindle direct-drive mechanical closed-loop transmission structure directly eliminates the need for traditional belt or gear intermediate transmissions. It uses two high-frequency motors and their electric spindles to directly drive the sprockets 2.6, forming a closed loop. This allows for both dual-drive and master-slave operation, significantly improving transmission efficiency and upper speed limit while reducing energy loss.

[0058] It should be further noted that both the fixed motor 2.1 and the moving motor 2.2 can serve as driving power sources depending on the required driving torque for the test, or one can be driven by the other to reduce energy consumption. The fixed motor 2.1 is mounted on the workbench 1.2, and the moving motor 2.2 is mounted on the linear guide rail 1.6 and connected to the loading device 4, enabling it to apply tension to the test chain 2.7. Furthermore, the driving speeds of both the fixed motor 2.1 and the moving motor 2.2 are adjusted by a frequency converter, eliminating intermediate transmission links and ensuring smooth and reliable transmission.

[0059] In one embodiment, such as Figure 8As shown, the test tank 3 includes a protective component 3.1. The protective component 3.1 includes a tank body 3.1.1 and a protective cover 3.1.2 that can be detachably covered to close the opening at the top of the tank body 3.1.1. An EPDM foamed rubber strip 3.1.3 is provided at the joint between the tank body 3.1.1 and the protective cover 3.1.2. The test chain 2.7 is inserted into the tank body 3.1.1 through the opening.

[0060] It should be noted that protective component 3.1 is an outer protective cover, providing a mounting base for other components. Protective cover 3.1.2 is a transparent and removable cover. When installing the test chain 2.7, protective cover 3.1.2 can be removed. After installing the test chain 2.7, protective cover 3.1.2 can be reinstalled. The EPDM foam rubber strip 3.1.3 is to ensure a good seal between the oil tank body 3.1.1 and protective cover 3.1.2, preventing excessive diffusion of oil mist.

[0061] In one embodiment, such as Figure 7 As shown, the protective component 3.1 is equipped with a tension adjustment device 3.2. The tension adjustment device 3.2 is in contact with the outer ring of the test chain 2.7. The tension adjustment device 3.2 is used to adjust the tension in the vertical direction according to the size of the test chain 2.7 to ensure the tension of the test chain 2.7.

[0062] It should be noted that an adjustment mounting hole can be reserved on the oil tank body 3.1.1. The adjustment mounting hole is used to allow the fixed electric spindle 2.8 and the movable electric spindle 2.9 to extend into it, and the sprocket 2.6 and the test chain 2.7 are located inside the oil tank body 3.1.1. After the test chain 2.7 is installed, the tension adjustment device 3.2 will adjust its height to contact the test chain 2.7. After adjustment, it will lock the tension adjustment device 3.2 onto the guide post inside the oil tank body 3.1.1.

[0063] In one embodiment, a temperature detection sensor 3.5 is provided inside the oil tank body 3.1.1. The temperature detection sensor 3.5 is connected to the control device and is used to monitor the temperature of the surface of the test chain 2.7 or the surrounding environment in real time.

[0064] It should be noted that the oil brush 3.3 and oil nozzle 3.4 are selected according to the test conditions and connected to the reserved interface position inside the oil tank body 3.1.1, and their contact position with the test chain 2.7 is adjusted so that the test chain 2.7 can be lubricated. The temperature detection sensor 3.5 can be adjusted in position during the test to be close to the side or end of the test chain 2.7 to measure its temperature change at high speed. In addition, the oil level detection sensor 3.6 is installed inside the oil tank body 3.1.1 to measure the liquid level under immersion conditions, ensuring that the immersion depth of the same specification test chain 2.7 is consistent in each test, providing more accurate data for the test.

[0065] It should also be noted that the oil circulation pipeline 3.8 is connected to the lubrication station 5, and the lubricating oil inside the oil tank body 3.1.1 is drawn back to the oil tank of the lubrication station 5 through a hose. The liquid level proximity switch 3.9 detects the liquid level inside the oil tank body 3.1.1 and measures the liquid level under the oil injection condition. Due to the oil injection condition, the lubricating oil in the oil tank body 3.1.1 is basically in a mist state. It is necessary to accumulate a certain amount before the oil pump of the lubrication station 5 can be started to draw the lubricating oil back to the oil tank of the lubrication station 5, so as to avoid the oil pump running dry and damaging the oil pump.

[0066] In one embodiment, a noise detection sensor 3.7 is provided on the outside of the tank body 3.1.1. The noise detection sensor 3.7 is connected to the control device and is used to collect the noise generated by the test chain 2.7 during the test process.

[0067] It should be noted that the noise detection sensor 3.7 is installed on the outside of the tank body 3.1.1. When the test chain 2.7 is not installed, the fixed motor 2.1 and the moving motor 2.2 are rotated under no-load to measure the background noise of the entire system. After the test chain 2.7 is installed, the noise of the entire system during operation is tested. According to the national standard for noise analysis, the working noise of the test chain under the test conditions is determined.

[0068] It should also be noted that the oil brush 3.3 and oil nozzle 3.4 are fixedly installed on the inner wall of the protective component 3.1. This application can be divided into three lubrication methods: dripping, spraying, and immersion. The oil brush 3.3 or oil nozzle 3.4 can be replaced according to the test requirements. During immersion lubrication, an oil level detection sensor 3.6 is fixedly installed inside the protective component 3.1 to control the consistent immersion height. During the test, the mechanical liquid level control interface inside the test oil tank 3 and the oil level detection sensor 3.6 are tested through the test chain 2.7 to control the liquid level height consistently, ensuring the consistency of the immersion depth of the same type of test chain 2.7 during the test, thereby improving the reliability of the test data. When the liquid level exceeds the upper limit of the reference value, the oil level detection sensor 3.6 will send a signal to the lubrication station 5 to start the circulation pump of the lubrication station 5 and pump the excess oil back into the lubrication station 5.

[0069] During oil injection, due to the small flow rate and mist-like state of the injected lubricating oil, when the oil level reaches the level proximity switch 3.9 in the oil tank body 3.1.1, the level proximity switch 3.9 sends a feedback signal to the lubrication station 5 to activate the circulation pump of the lubrication station 5. This pump draws the lubricating oil from the oil tank body 3.1.1 back into the lubrication station 5, ensuring that the lubricating oil in the oil tank body 3.1.1 does not submerge the test chain 2.7 during oil injection. After the test, the oil is recovered from the protective component 3.1 through the oil circulation pipeline 3.8 back into the lubrication station 5.

[0070] In one embodiment, such as Figure 9 As shown, the loading device 4 includes two oppositely distributed reaction beams 4.5, at least two reaction rods 4.3 perpendicular to the two reaction beams 4.5, a servo motor 4.8 mounted on the worktable 1.2, a guide rail slider 4.1 slidably mounted on the linear guide rail 1.6, a T-shaped lead screw 4.7, a force sensor 4.6, and a displacement measuring device 4.2;

[0071] The moving motor 2.2 is located on one side of the reaction beam 4.5. The fixed end of the displacement measuring device 4.2 is located on the fixed motor 2.1, and the measuring end of the displacement measuring device 4.2 is located on the moving motor 2.2. The T-shaped lead screw 4.7 includes a lead screw and a baffle. One end of the lead screw is connected to the servo motor 4.8, and the other end of the lead screw passes through the reaction beam 4.5 and is vertically connected to the baffle. The baffle and the reaction beam 4.5 abut against each other. The force sensor 4.6 is located on the reaction beam 4.5. The servo motor 4.8, the force sensor 4.6, and the displacement measuring device 4.2 are all connected to the control device.

[0072] In one embodiment, an air spring 4.4 is also included, one end of which abuts against the reaction beam 4.5, and the other end of which abuts against the baffle.

[0073] It should be noted that when the servo motor 4.8 is working, it drives the moving motor 2.2 and the moving electric spindle 2.9 to move along the linear guide rail 1.6 with the guide rail slider 4.1 to complete the tension loading on the test chain 2.7. Furthermore, the air spring 4.4 and the force sensor 4.6 are both fixedly mounted on the reaction beam 4.5. Due to the transmission characteristics of the test chain 2.7, it will bounce during the test. To reduce the impact of this bounce on the test force value, an air spring 4.4 is installed. By controlling the inflation pressure of the air spring 4.4, its stiffness is adjusted to counteract the impact of the test chain 2.7 bounce on the force value acquisition during the test. Simultaneously, the air spring 4.4 also acts as a vibration isolation device, reducing the overall vibration of the machine caused by the fluctuation of the test chain 2.7. Moreover, the force sensor 4.6 can measure the magnitude of the applied force in real time.

[0074] The displacement measuring device 4.2 is fixedly mounted on the fixed motor 2.1, which is fixed to the worktable 1.2. The other end of the displacement measuring device 4.2 is connected to the moving motor 2.2. When the servo motor 4.8 drives the T-shaped lead screw 4.7 to pull the reaction beam 4.5, the displacement measuring device 4.2 can measure the change in the center distance between the fixed motor 2.1 and the moving motor, and thus measure the change in the center distance between the two sprockets 2.6. At the same time, the upper and lower limits of displacement can be set in the test software. When the test chain 2.7 is worn too much or deformed too much, the test can be stopped in time.

[0075] In one embodiment, the lubrication station 5 is equipped with an electric heater, a flow meter, and a pressure regulating valve. The electric heater is used to heat the lubricating oil to any set temperature within the range of room temperature to 200°C. The lubrication station 5 integrates functional modules such as self-heating, lubricating oil circulation, and flow detection. Together with the control device, it simulates the lifespan of the test chain 2.7 under the test conditions required when testing the test chain 2.7 in actual applications.

[0076] In one embodiment, the horizontal frame 1 further includes a shock absorber 1.1 disposed below the workbench 1.2, an outer cover 1.3 covering the working area of ​​the workbench 1.2, and an oil mist collector 1.4 disposed on top of the outer cover 1.3 to recycle the generated oil mist through negative pressure adsorption.

[0077] It should be noted that the shock absorber 1.1 can be made of metal and rubber, and the pneumatic component 1.5 is fixedly installed on the side of the workbench 1.2. The outer cover 1.3 is fixed above the workbench 1.2 to protect the test environment and prevent test oil mist from spreading into the air. An oil mist collector 1.4 is fixedly installed above the outer cover 1.3 to collect and recover the oil mist generated during the test.

[0078] It should also be noted that this application features a multi-mode composite lubrication system design, integrating dripping, spraying, and immersion lubrication methods within the same test oil tank 3. Operators can replace the oil brush 3.3 or the oil nozzle 3.4 according to test requirements. Furthermore, this application incorporates an intelligent liquid level control and oil mist management mechanism. For example, in immersion mode, a constant liquid level is achieved using an oil level detection sensor 3.6 and the circulation pump of the lubrication station 5; in spray mode, a liquid level proximity switch 3.9 is installed to prevent misoperation caused by trace amounts of oil accumulation. Additionally, the device is equipped with components such as an oil circulation pipeline 3.8 and an oil mist collector 1.4 to achieve environmentally friendly operation. Moreover, this application introduces an air spring 4.4 into the loading device 4, utilizing the nonlinear stiffness characteristics of the air spring 4.4 to counteract the dynamic interference caused by the high-speed jumping of the test chain 2.7, ensuring the stability of the force sensor 4.6's force measurement. Simultaneously, combined with the displacement measuring device 4.2, high-precision online monitoring of the elongation of the test chain 2.7 can be achieved.

[0079] Furthermore, it should be noted that this application features a comprehensive sensing and monitoring system. For example, the temperature sensor 3.5 monitors the surface temperature rise of the test chain 2.7; the noise sensor 3.7 acquires the noise spectrum during operation; and the encoder 2.4, force sensor 4.6, and displacement measuring device 4.2 together constitute a digital closed-loop control system, enabling full-process data tracking and anomaly warning. Moreover, this device can be equipped with dedicated testing software, supporting programmed control, multi-parameter linkage setting, real-time curve plotting, data storage and export, and featuring three operating modes: manual / automatic / programmed, as well as multiple safety protection mechanisms (such as automatic shutdown in case of overload, breakage, or over-temperature).

[0080] This application features fully automatic closed-loop control, enabling periodic testing of speed, torque, power, and load according to pre-set time intervals. Furthermore, it provides real-time data display and curve tracking display of speed, torque, power, load, and test time. This application utilizes displacement measuring devices 4.2, oil level sensors 3.6, and liquid level proximity switches 3.9 as key feedback elements to form a high-precision closed-loop control system, achieving ideal measurement and control functions. The absence of intermediate transmission links between the motor and the electric spindle ensures smooth and reliable transmission. The electric spindle can be connected to the sprocket 2.6 via an expansion ring, ensuring high reliability and good balance. Installing air springs 4.4 between the loading devices 4 reduces the impact of test chain fluctuations on the accuracy of data acquisition.

[0081] In addition, it should be noted that the orientation or positional relationship indicated by "up and down" in this application is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the purpose of simplifying the description and making it easier to understand, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this invention is within the scope of protection of this invention and will not be elaborated upon here.

[0083] The high-temperature, high-speed chain wear testing machine provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A high-temperature, high-speed chain wear testing machine, characterized in that, include: A horizontal frame (1) includes a worktable (1.2) and a linear guide rail (1.6) disposed on the worktable (1.2). The electric spindle assembly (2) includes a fixed motor (2.1) fixed on the worktable (1.2) and a movable motor (2.2) slidably on the linear guide rail (1.6). Both ends of the fixed electric spindle (2.8) of the fixed motor (2.1) and the movable electric spindle (2.9) of the movable motor (2.2) are provided with sprockets (2.6). A test chain (2.7) is wound around the outer periphery of the two sprockets (2.6) on the same side. The test oil tank (3) is located on opposite sides of the electric spindle assembly (2). The sprocket (2.6) and the test chain (2.7) are both located inside the test oil tank (3). The test oil tank (3) is equipped with replaceable oil brushes (3.3) or oil nozzles (3.4) for selective installation according to the test conditions of dripping, spraying or immersion. The test oil tank (3) is equipped with an oil level detection sensor (3.6) and a liquid level proximity switch (3.9) for measuring the liquid level under the immersion condition. The liquid level proximity switch (3.9) is used to measure the oil accumulation in the test oil tank (3) under the spray condition. The loading device (4) has its fixed part mounted on the workbench (1.2), and the moving part of the loading device (4) is connected to the moving motor (2.2) to apply tension to the test chain (2.7); Lubrication station (5) is spaced on one side of the horizontal frame (1). The lubrication station (5) is connected to the oil inlet of the test oil tank (3). The bottom of the test oil tank (3) is provided with an oil return port, which is connected to the lubrication station (5). The control device includes the fixed motor (2.1), the mobile motor (2.2), the oil level detection sensor (3.6), the liquid level proximity switch (3.9), the loading device (4), and the lubrication station (5), all of which are connected to the control device.

2. The high-temperature high-speed chain wear testing machine according to claim 1, characterized in that, The electric spindle assembly (2) also includes a lubrication and cooling pipeline (2.5), and both the fixed electric spindle (2.8) and the movable electric spindle (2.9) are equipped with encoders (2.4).

3. The high-temperature high-speed chain wear testing machine according to claim 1, characterized in that, The test tank (3) includes a protective component (3.1), which includes a tank body (3.1.1) and a protective cover (3.1.2) that can be detachably covered by an opening on the upper part of the tank body (3.1.1). An EPDM foamed rubber strip (3.1.3) is provided at the joint between the tank body (3.1.1) and the protective cover (3.1.2). The test chain (2.7) is inserted into the tank body (3.1.1) through the opening.

4. The high-temperature high-speed chain wear testing machine according to claim 3, characterized in that, The protective component (3.1) is provided with a tension adjustment device (3.2), which is in contact with the outer ring of the test chain (2.7). The tension adjustment device (3.2) is used to adjust the test chain (2.7) in the vertical direction according to the size of the test chain (2.7) to ensure the tension of the test chain (2.7).

5. The high-temperature high-speed chain wear testing machine according to claim 3, characterized in that, The oil tank body (3.1.1) is equipped with a temperature detection sensor (3.5), which is connected to the control device. The temperature detection sensor (3.5) is used to monitor the temperature of the surface of the test chain (2.7) or the surrounding environment in real time.

6. The high-temperature high-speed chain wear testing machine according to claim 3, characterized in that, A noise detection sensor (3.7) is provided on the outside of the oil tank body (3.1.1). The noise detection sensor (3.7) is connected to the control device and is used to collect the noise generated by the test chain (2.7) during the test.

7. The high-temperature high-speed chain wear testing machine according to any one of claims 1 to 6, characterized in that, The loading device (4) includes two opposing reaction beams (4.5), at least two reaction rods (4.3) perpendicular to the two reaction beams (4.5), a servo motor (4.8) mounted on the worktable (1.2), a guide rail slider (4.1) slidably mounted on the linear guide rail (1.6), a T-shaped lead screw (4.7), a force sensor (4.6), and a displacement measuring device (4.2). The moving motor (2.2) is located on one side of the reaction beam (4.5). The fixed end of the displacement measuring device (4.2) is located on the fixed motor (2.1), and the measuring end of the displacement measuring device (4.2) is located on the moving motor (2.2). The T-shaped lead screw (4.7) includes a lead screw and a baffle. One end of the lead screw is connected to the servo motor (4.8), and the other end of the lead screw passes through the reaction beam (4.5) and is vertically connected to the baffle. The baffle and the reaction beam (4.5) abut against each other. The force sensor (4.6) is located on the reaction beam (4.5). The servo motor (4.8), the force sensor (4.6), and the displacement measuring device (4.2) are all connected to the control device.

8. The high-temperature high-speed chain wear testing machine according to claim 7, characterized in that, It also includes an air spring (4.4), one end of which abuts against the reaction beam (4.5), and the other end of which abuts against the baffle.

9. The high-temperature high-speed chain wear testing machine according to any one of claims 1 to 6, characterized in that, The lubrication station (5) is equipped with an electric heater, a flow meter and a pressure regulating valve. The electric heater is used to heat the lubricating oil to any set temperature within the range of room temperature to 200°C.

10. The high-temperature high-speed chain wear testing machine according to any one of claims 1 to 6, characterized in that, The horizontal frame (1) also includes a shock absorber (1.1) located below the workbench (1.2), an outer cover (1.3) covering the working area of ​​the workbench (1.2), and an oil mist collector (1.4). The oil mist collector (1.4) is located on top of the outer cover (1.3) to recycle the generated oil mist through negative pressure adsorption.

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