Wire wear testing system and method

Abstract

The invention provides a line abrasion testing system and method, and belongs to the field of line abrasion testing. The line abrasion testing system comprises a line abrasion testing device, a temperature adjusting device and a control device, wherein the temperature adjusting device is respectively connected with the line abrasion testing device and the control device; the linear abrasion test device comprises a metal plate used for being in friction with a friction material. And during an online abrasion test, the control device controls the temperature adjusting device to adjust the temperature of the metal plate, so that the temperature of the metal plate reaches a target test temperature of the online abrasion test. By adjusting the temperature of the metal plate in friction with the friction material, the temperature conduction speed is increased, and the conduction loss of the environment temperature is reduced, so that the accuracy of abrasion test data and test results at different temperatures is improved.

Description

Technical Field

[0001] The present invention belongs to the field of wire wear testing, and particularly relates to a wire wear testing system and method. Background Art

[0002] In order to better detect the wear resistance of friction materials in friction pendulums of buildings or highway bridges, it is necessary to conduct simulation tests on the friction materials. The existing test method is to conduct wire wear tests on them. Wire wear testing refers to rubbing the friction material against a stainless steel plate with or without lubrication, and the test result is the average of the two wire wear results of two friction materials in a group of tests. Finally, the service performance of the friction material can be evaluated according to the requirements of standards or indicators.

[0003] Wire wear is a method that can effectively measure the wear resistance of friction materials in friction pendulums. Currently, it is clearly stated in European Standard EN15129-2018 that wire wear needs to be measured at different temperature gradients. However, the existing wire wear devices can only simulate specimens at different temperatures by changing the ambient temperature. The temperature change speed is slow and the efficiency is low, thus reducing the accuracy of wire wear test data and test results at different temperatures. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and provide a wire wear testing system and method. By adjusting the temperature of the metal plate that rubs against the friction material, the temperature conduction speed is increased, and the ambient temperature conduction loss is reduced, thereby improving the accuracy of wire wear test data and test results at different temperatures.

[0005] The present invention is achieved by the following technical solutions:

[0006] In the first aspect of the present invention, a wire wear testing system is provided. The wire wear testing system includes: a wire wear test device, a temperature adjustment device, and a control device. The temperature adjustment device is respectively connected to the wire wear test device and the control device; the wire wear test device includes a metal plate for rubbing against the friction material.

[0007] During wire wear testing, the control device controls the temperature adjustment device to adjust the temperature of the metal plate so that the temperature of the metal plate reaches the target test temperature for wire wear testing.

[0008] A further improvement of the present invention lies in:

[0009] The temperature adjustment device includes: a cooling device and / or a heating device; a flow cavity is provided inside the metal plate, and the cooling device and / or the heating device are respectively connected to the flow cavity through pipelines.

[0010] The heating device is used to raise the temperature of the metal plate through a heat medium;

[0011] The cooling device is used to lower the temperature of the metal plate through a refrigerant.

[0012] A further improvement of the present invention lies in:

[0013] The wire wear test system further includes: a counting device, and the counting device is communicatively connected to the control device;

[0014] The counting device is used to collect the number of reciprocating movements of the metal plate.

[0015] A further improvement of the present invention lies in:

[0016] The control device is configured to determine the target test temperature of the metal plate based on the number of reciprocating movements; when the number of reciprocating movements reaches a preset target number, control the temperature adjustment device to adjust the temperature of the metal plate to the target test temperature.

[0017] A further improvement of the present invention lies in:

[0018] The temperature adjustment device further includes: a temperature sensor;

[0019] The temperature sensor is used to collect the temperature information of the metal plate.

[0020] The control device is further configured to control the wire wear test device to stop operating when the temperature of the metal plate is abnormal.

[0021] A further improvement of the present invention lies in:

[0022] The wire wear test system further includes: an alarm device;

[0023] The alarm device is used to generate an alarm signal when the temperature of the metal plate is abnormal.

[0024] In the second aspect of the present invention, a wire wear test method is provided, and the wire wear test method includes:

[0025] During the wire wear test, the temperature of the metal plate in contact with the friction material is adjusted through a temperature adjustment device so that the temperature of the metal plate reaches the target test temperature for the wire wear test.

[0026] A further improvement of the present invention lies in:

[0027] The wire wear test method further includes: obtaining the number of reciprocating movements of the metal plate, and determining the target test temperature of the metal plate based on the number of reciprocating movements.

[0028] A further improvement of the present invention lies in:

[0029] When the number of reciprocating movements reaches a preset target number, adjust the temperature of the metal plate so that the temperature of the metal plate reaches a preset target test temperature.

[0030] A further improvement of the present invention lies in:

[0031] The wire wear test method further includes: obtaining the temperature information of the metal plate, and controlling the wire wear test device to stop running when the temperature of the metal plate is abnormal.

[0032] Compared with the prior art, the beneficial effect of the present invention is that: by adjusting the temperature of the metal plate through a temperature adjustment device, the temperature of the metal plate reaches the target test temperature for wire wear testing, thereby improving the temperature conduction speed, reducing the environmental temperature conduction loss, and further improving the accuracy of wire wear test data and test results at different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] By describing the embodiments of the present invention in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present invention will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0034] Figure 1 is a schematic structural diagram of a wire wear test system according to some embodiments of the present invention;

[0035] Figure 2 is a schematic structural diagram of a wire wear test system according to other embodiments of the present invention;

[0036] Figure 3 is a schematic flowchart of a wire wear test method according to some embodiments of the present invention.

[0037] Figure 2 Explanation of the reference numerals in

[0038] 1 - wire wear testing machine, 2 - control system, 3 - temperature adjustment device, 11 - infrared counter, 12 - wear-resistant stainless steel plate, 13 - control valve, 21 - control panel, 22 - buzzer, 31 - temperature sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] To make the objectives, technical solutions, and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments of the present invention. It should be understood that the present invention is not limited by the exemplary embodiments described herein. Based on the embodiments of the present invention described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Since the existing wire wear testing device can only simulate specimens at different temperatures by changing the ambient temperature, the temperature change speed is slow and the efficiency is low. Therefore, the accuracy of the wire wear test data and test results at different temperatures is relatively low. Based on this, the present invention proposes a wire wear testing system and method. The present invention will be further described in detail below with reference to the accompanying drawings.

[0041] First, Figure 1 the wire wear testing system 100 of some embodiments of the present invention will be described.

[0042] As Figure 1 shown, the wire wear testing system 100 in the present invention includes: a wire wear test device 110, a temperature adjustment device 120, and a control device 130. The temperature adjustment device 120 is respectively connected to the wire wear test device 110 and the control device 130. The wire wear test device 110 includes a metal plate for friction with the friction material.

[0043] During the wire wear test, the control device 130 controls the temperature adjustment device 120 to adjust the temperature of the metal plate so that the temperature of the metal plate reaches the target test temperature of the wire wear test.

[0044] In the wire wear test device 110 of the present invention, except for the metal plate, other components can be implemented by existing technologies, so no further description will be given here. The metal plate can be a stainless steel plate, and the present invention does not make specific limitations on the specific material of the metal plate.

[0045] In the present invention, the control device 130 may be a general-purpose processor, an application-specific integrated circuit (ASIC), a programmable logic device (PLD), a digital signal processor (DSP), or a combination thereof. The above PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof. Embodiments of the present invention do not make specific limitations thereto.

[0046] In the present invention, the friction material may be a friction material in a linear wear test such as a building friction pendulum isolation bearing or a seismic isolation device.

[0047] In the present invention, the temperature adjustment device 120 may adjust the temperature of the metal plate so that the temperature of the metal plate reaches the target test temperature for the linear wear test.

[0048] Specifically, the temperature adjustment device 120 may include a heating device and / or a cooling device. The heating device can raise the temperature of the metal plate, and the cooling device can lower the temperature of the metal plate. When both a heating device and a cooling device are included, the heating device and the cooling device may be independently arranged or integrally arranged, that is, the temperature of the metal plate is adjusted by one device.

[0049] The present invention changes the existing method of controlling the temperature of the friction material by changing the ambient temperature. During the test, the temperature adjustment device 120 can quickly and effectively conduct the temperature to the metal plate under the control of the control device 130, and then conduct the temperature through the metal plate. This temperature conduction method is faster and more effective, and effectively reduces the conduction loss of the ambient temperature, thereby improving the accuracy of the linear wear test data and test results at different temperatures.

[0050] In some embodiments of the present invention, the temperature adjustment device includes: a cooling device and / or a heating device. A flow cavity is provided inside the metal plate, and the cooling device and / or the heating device are respectively connected to the flow cavity through pipelines.

[0051] The heating device is used to raise the temperature of the metal plate through a heat medium;

[0052] The cooling device is used to lower the temperature of the metal plate through a refrigerant.

[0053] Specifically, the heating component can be a heating rod. The heat medium and the refrigerant can use the same liquid.

[0054] By adjusting the temperature of the metal plate through the temperature adjustment device, the problems of slow temperature change speed and low efficiency caused by the method of adjusting the ambient temperature can be effectively avoided, the control accuracy of parameters in the test can be improved, and the accuracy of the test results can be improved.

[0055] In some embodiments of the present invention, the wire wear test system further includes: a counting device, which is communicatively connected to the control device; the counting device is used to collect the number of reciprocating movements of the metal plate.

[0056] Specifically, the counting device can collect the motor rotation data that drives the movement of the metal plate, and calculate the number of reciprocating movements of the metal plate based on the motor rotation data.

[0057] Preferably, the counting device can also use an infrared counter. The infrared counter can be installed at one side edge of the metal plate. When the metal plate moves back and forth, the light of the infrared counter is blocked, so as to capture the signal for counting. Wherein, when the light of the infrared counter is blocked twice, it is considered as one reciprocating movement.

[0058] Through the infrared counting device, the number of reciprocating movements of the metal plate can be collected more accurately, and it can be conveniently applied to the existing wire wear test device without modifying the existing wire wear test device.

[0059] In some embodiments of the present invention, the control device is configured to determine the target test temperature of the metal plate based on the number of reciprocating movements; when the number of reciprocating movements reaches a preset target number, control the temperature adjustment device to adjust the temperature of the metal plate to the target test temperature.

[0060] When the number of reciprocating movements reaches a preset target number, the temperature adjustment device can be controlled to adjust the temperature of the metal plate to the target test temperature within a preset time range. The time range here can be 5 seconds or 10 seconds, and is not limited thereto.

[0061] In the present invention, controlling the temperature adjustment device to adjust the temperature of the metal plate based on the number of reciprocating movements can improve the temperature control accuracy, enhance the test efficiency and the accuracy of test data, and thus effectively solve the problems of slow temperature change speed and large test error.

[0062] In some embodiments of the present invention, the temperature adjustment device further includes a temperature sensor;

[0063] The temperature sensor is used to collect the temperature information of the metal plate;

[0064] The control device is further configured to control the wire wear test device to stop operating when the temperature of the metal plate is abnormal.

[0065] When the temperature is abnormal, emergency stop measures can be taken for the test device, which effectively ensures the safety of the test.

[0066] The control device can also control the temperature regulating device to adjust the temperature of the metal plate based on the temperature information collected by the temperature sensor.

[0067] In the present invention, in order to make the temperature of the metal plate reach the target test temperature, the temperature information of the metal plate is collected in real time through a temperature sensor. The method of controlling the temperature regulating device based on the temperature information and the target test temperature can adopt existing control methods, such as proportional-integral-derivative (PID) control, which will not be elaborated here.

[0068] In some embodiments of the present invention, the wire wear test system further includes: an alarm device;

[0069] The alarm device is used to generate an alarm signal when the temperature of the metal plate is abnormal.

[0070] Next, refer to Figure 2 to describe the wire wear test system of other embodiments of the present invention.

[0071] As Figure 2 shown, the wire wear test system includes a wire wear testing machine 1, a control system 2, and a temperature regulating device 3, which are interconnected with each other.

[0072] Among them, in addition to configuring a wear-resistant stainless steel plate 12 according to the standard requirements, the wire wear testing machine 1 is also equipped with an infrared counter 11 and a control valve 13.

[0073] The wear-resistant stainless steel plate 12 has good temperature conduction performance and at the same time has a conduit that can be connected to the temperature regulating device 3. According to the instruction of the control system 2, the temperature regulating device 3 can transmit the required temperature to the wear-resistant stainless steel plate 12, and the wear-resistant stainless steel plate 12 can quickly change temperature.

[0074] The control valve 13 is connected to the control system 2 and can receive the signal sent by the control system 2. The function of the control valve 13 is to allow the wire wear testing machine to work within the temperature range. When the temperature exceeds the set temperature ±5°C, the control system can output an instruction to the control valve 13 to make the machine automatically stop emergently.

[0075] The control system 2 is configured with a control panel 21 and a buzzer 22.

[0076] Further, the control system 2 can send control instructions to the infrared counter 11, and the infrared counter 11 starts counting. Two counts are considered as one reciprocating motion. At the same time, the control system 2 can input parameter setting instructions through the control panel 21 to set parameters such as the initial temperature, the target test temperature corresponding to the target number of times, the time required for temperature change, and the heating interval duration.

[0077] Further, the control panel 21 can receive input instructions. At the same time, the control panel also serves as a display and can display the collected data.

[0078] Further, the buzzer 22 is connected to the control system 2. When the control system 2 detects an abnormal temperature, it can activate the alarm through the interlock device. When the buzzer 22 alarms, the control system 2 opens the control valve 13 at the same time.

[0079] The temperature adjustment device 3 is configured with a temperature sensor 31.

[0080] The temperature adjustment device 3 can include a coolant tank and a heating rod, and can adjust the temperature of the wear-resistant stainless steel plate 12 according to the instructions of the control system 2. The temperature adjustment device 3 is connected to the wear-resistant stainless steel plate 12 through a pipeline. The wear-resistant stainless steel plate 12 has an a port and a b port, and the coolant can be input from the a port and output from the b port.

[0081] The temperature sensor 31 can collect the temperature of the liquid in the temperature adjustment device 3 and transmit the signal to the control system 2.

[0082] In the wire wear test system of this embodiment, since the fixed-coil automatic temperature change and cooling method is adopted, the wire wear test can be carried out under effective temperature change. Moreover, the wire wear test system also has an interlock device for emergency braking. When the temperature is abnormal, through the interlock device and the control valve 13, the test device can be stopped immediately, and at the same time, the buzzer is activated for alarm, which effectively guarantees the safety performance of the test.

[0083] In the second aspect of the present invention, a wire wear test method is provided, including: during the wire wear test, adjusting the temperature of the metal plate in contact with the friction material through the temperature adjustment device so that the temperature of the metal plate reaches the target test temperature for the wire wear test.

[0084] Next, refer to Figure 3 to describe the wire wear test method of some embodiments of the present invention.

[0085] As Figure 3 shown, the method includes the following steps S310 - step S320.

[0086] Step S310, obtain the number of reciprocating motions of the metal plate;

[0087] Step S320: Determine the target test temperature of the metal plate based on the number of reciprocating motions.

[0088] Step S320: When the number of reciprocating motions reaches the preset target number, adjust the temperature of the metal plate so that the temperature of the metal plate reaches the preset target test temperature.

[0089] Specifically, in one test, the preset target number can be multiple. For example, the preset target number includes the first target number and the second target number.

[0090] Correspondingly, when the number of reciprocating motions reaches the first target number, adjust the temperature of the metal plate so that the temperature of the metal plate reaches the first target test temperature; when the number of reciprocating motions reaches the second target number, adjust the temperature of the metal plate so that the temperature of the metal plate reaches the second target test temperature.

[0091] In some embodiments of the present invention, the wire wear test method further includes: obtaining the temperature information of the metal plate, and when the temperature of the metal plate is abnormal, controlling the wire wear test device to stop running.

[0092] The following gives an embodiment of wire wear test through the Figure 2 shown wire wear test system.

[0093] In this embodiment, the initial temperature is 21°C, and the metal plate is a stainless steel plate. Since the target test temperature during the test is lower than 21°C, only the cooling device in the temperature adjustment device is used for temperature adjustment.

[0094] Start the wire wear test. When the infrared counter counts equal to 200, the target test temperature is 0°C. When the infrared counter counts reach 200, that is, the number of reciprocating motions reaches 100 times, and the temperature is reduced to 0°C within 10 seconds.

[0095] When the infrared counter counts equal to 400, the target test temperature is -10°C. Keep the temperature at 0°C until the infrared counter counts reach 400, that is, the number of reciprocating motions reaches 200 times, and the temperature is reduced to -10°C within 10 seconds.

[0096] When the infrared counter counts equal to 600, the target test temperature is -20°C. Keep the temperature at -10°C until the infrared counter counts reach 600, that is, the number of reciprocating motions reaches 300 times, and the temperature is reduced to -20°C within 10 seconds, and keep the temperature and continue to wear until the preset number of reciprocating motions.

[0097] During the above process, the temperature regulating device transfers the coolant to the worn stainless steel plate. During the wear process, the worn stainless steel plate can transfer the temperature to the wear specimen, and when the temperature required for linear wear is reached, the constant-loop variable-temperature wear is carried out. When the temperature sensor senses that the temperature difference exceeds ±5°C, the system starts the emergency stop mode, and the control device issues an emergency stop command while the buzzer gives an alarm.

[0098] It should be noted that when the target test temperature during the test process is lower than the current temperature, the temperature can be adjusted only by the heating component in the temperature regulating device.

[0099] At the same time, the target test temperature and the number of reciprocating movements can be set as required. The specific numbers or ranges in this embodiment are only for better describing the embodiment and are not within the scope of protection.

[0100] Finally, it should be noted that the above technical solution is only one implementation manner of the present invention. For those skilled in the art, based on the application methods and principles disclosed in the present invention, various types of improvements or deformations can be easily made, not limited to the methods described in the above specific implementation manner of the present invention. Therefore, the above-described manner is only preferred and does not have a restrictive meaning.

Claims

1. A wire wear test system, characterized in that: The wire wear test system comprises: a wire wear test device, a temperature regulating device and a control device, wherein the temperature regulating device is connected to the wire wear test device and the control device respectively; the wire wear test device comprises a metal plate for rubbing against a friction material; During the online wear test, the control device controls the temperature adjustment device to adjust the temperature of the metal plate so that the temperature of the metal plate reaches the target test temperature of the online wear test.

2. The wire abrasion testing system according to claim 1, characterized in that: The temperature regulating device comprises: a cooling device and / or a heating device; a flow cavity is provided inside the metal plate, and the cooling device and / or the heating device are respectively connected to the flow cavity through pipelines; The heating device is used to heat the metal plate by means of a heat medium; The cooling device is used to cool the metal plate by using a refrigerant.

3. The wire abrasion testing system according to any one of claims 1 to 2, characterized in that: The wire wear test system further comprises: a counting device, the counting device being communicatively connected with the control device; The counting device is used to collect the number of reciprocating movements of the metal plate.

4. The wire abrasion testing system according to claim 3, characterized in that: The control device is configured to determine a target test temperature of the metal plate based on the number of reciprocating motions; when the number of reciprocating motions reaches a preset target number, control the temperature adjustment device to adjust the temperature of the metal plate to the target test temperature.

5. The wire abrasion testing system according to claim 4, characterized in that: The temperature regulating device further comprises: a temperature sensor; The temperature sensor is used to collect temperature information of the metal plate; The control device is further configured to control the wire wear test device to stop operating when the temperature of the metal plate is abnormal.

6. The wire abrasion testing system according to claim 4, characterized in that: The wire wear test system also includes: an alarm device; The alarm device is used to generate an alarm signal when the temperature of the metal plate is abnormal.

7. A wire abrasion test method, characterized in that: The wire abrasion test method comprises: During the online wear test, the temperature of the metal plate rubbing against the friction material is adjusted by a temperature adjustment device so that the temperature of the metal plate reaches the target test temperature of the online wear test.

8. The wire abrasion testing method according to claim 7, characterized in that: The wire wear test method further includes: obtaining the number of reciprocating motions of the metal plate, and determining a target test temperature of the metal plate based on the number of reciprocating motions.

9. The wire abrasion testing method according to claim 8, characterized in that: When the number of reciprocating motions reaches a preset target number, the temperature of the metal plate is adjusted so that the temperature of the metal plate reaches a preset target test temperature.

10. The wire abrasion testing method according to claim 7, characterized in that: The wire abrasion test method further includes: acquiring temperature information of the metal plate, and when the temperature of the metal plate is abnormal, controlling the wire abrasion test device to stop running.

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