Friction coupling dynamic friction test bench

Abstract

The utility model discloses a friction coupling dynamic friction test board, including setting base, be connected with test seat through adjusting assembly on the base, the test seat surface is equipped with level meter, be provided with test assembly on the test seat, adjusting assembly includes the screw rod of installation on the base, the rotating knob is installed to the screw rod outside, the test seat bottom is provided with the rotation groove, the rotation ball is installed in the rotation groove, the screw rod is connected in the rotation groove inside, the rotation ball and screw rod outer thread are adapted. This friction coupling dynamic friction test board, the device is placed on the platform through the base, the test seat level state that the level meter shows is observed, the screw rod is rotated through the rotating knob, makes the test seat convenient height fine adjustment, until the level meter shows level, avoids the friction data deviation that causes the reference inclination, and the adjusting process does not need to dismount the equipment, and the preparation time before test is greatly shortened, and the equipment use efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of friction coupling testing, specifically a dynamic friction test bench for friction couplings. Background Technology

[0002] Friction couplings require friction testing during use. Currently, existing dynamic friction test benches for friction couplings typically test the coefficient of friction by measuring normal force and friction force. However, this measurement method is mostly carried out under low-speed conditions. Since low-speed measurement cannot fully simulate the dynamic friction behavior in actual applications, it may lead to deviations between the test results and actual usage conditions, thereby affecting the performance evaluation and design optimization of friction couplings.

[0003] To overcome the above-mentioned defects, the prior art (Chinese Patent Publication No. CN103868846B, Publication Date: 2016.05.04) provides a friction coefficient measuring device and method. To address the problem of low accuracy in measuring the dynamic friction coefficient of brushes under high-speed conditions, the test bench includes a testing fixture and a control system. The testing fixture uses a torque sensor vertically connected to a pressure sensor via a lever arm. The pressure sensor is connected to a brush clamping fixture and the brush under test inside. The brush clamping fixture is located on the upper part of a copper-insulated turntable. A drive motor rotates the copper-insulated turntable. The upper and lower parts of the brush clamping fixture are connected by threads. The lever arm is a telescopic lever arm. The control system rotates the drive motor and collects signals from the pressure sensor and torque sensor. During measurement, the brush is brought into contact with the copper-insulated turntable. The threads and lever arm are adjusted to ensure the pressure sensor reading is within a specified range. The control system calculates the friction coefficient of the brush under test based on the measured data. This method is used to measure the dynamic friction coefficient of brushes under high-speed conditions.

[0004] Existing technology uses a lever arm to drive the brush to contact the copper-plated turntable, thereby increasing the overall testing speed. However, the test platform in this technology is usually placed directly on the experimental table, lacking an effective level calibration mechanism, which cannot guarantee the levelness of the test platform. Furthermore, an inclined test platform will cause significant deviations in the friction force measurement values ​​during the test, affecting the accuracy of the data.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing dynamic friction test bench for friction couplings. Therefore, we proposed that the dynamic friction test bench for friction couplings can effectively solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a dynamic friction test bench for friction couplings, in order to solve the problem mentioned in the background art that the current market uses a lever arm to drive the brush to contact the copper-plated turntable, thereby improving the overall test speed. However, the test bench in the prior art is usually placed directly on the experimental table, lacking an effective level calibration mechanism, and cannot guarantee the levelness of the test bench. Furthermore, an inclined test bench will cause significant deviations in the friction force measurement values ​​during the test, affecting the accuracy of the data.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dynamic friction test bench for friction couplings, including a base, a test seat connected to the base via an adjustment component, a level mounted on the surface of the test seat, a test component mounted on the test seat, the adjustment component including a screw mounted on the base, a rotating knob mounted on the outside of the screw, a rotating groove opened at the bottom of the test seat, a rotating ball installed inside the rotating groove, the screw penetrating and connected inside the rotating groove, and the rotating ball being adapted to the external thread of the screw.

[0008] Preferably, the test assembly includes a movable seat mounted on a test base, a detection seat slidably connected to the movable seat, a snap-fit ​​component extending through the inside of the detection seat, a spring sleeved on the outside of the snap-fit ​​component, and a pressure block snapped onto the snap-fit ​​component.

[0009] Preferably, a protective cover is connected to the test stand via a hinge, and a temperature regulating component is provided inside the test stand. The temperature regulating component includes a storage box installed inside the test stand, and a heating element is provided inside the storage box.

[0010] Preferably, a contact element is installed at the bottom of the protective cover, and a contact seat adapted to the contact element is provided inside the test seat, with an auxiliary component connected to the output end of the contact seat.

[0011] Preferably, the auxiliary component includes an air pump installed inside the test fixture, the air pump being electrically connected to the contact seat, and the output end of the air pump being connected to a delivery pipe.

[0012] Preferably, the conveying pipe is connected to the inner cavity of the storage box, the conveying pipe runs through the inside of the protective cover, and a nozzle is connected to the end of the conveying pipe.

[0013] Preferably, the auxiliary component includes a controller installed inside the test socket, the controller being electrically connected to the contact socket.

[0014] Preferably, the controller is connected to a fan via a wire, which passes through the inside of the protective cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This dynamic friction test bench for friction couplings allows the device to be placed on a platform via a base. The horizontal status of the test seat is observed by the level indicator. By rotating the knob to drive the screw, the height of the test seat can be easily fine-tuned until the level indicator shows horizontal, avoiding friction data deviations caused by reference tilt. Furthermore, the adjustment process does not require disassembling the equipment, significantly shortening the preparation time before testing and improving equipment efficiency. The specific details are as follows:

[0016] (1) The test seat is monitored in real time by using a level. The height of the test seat is finely adjusted by rotating the ball and moving it up and down along the screw until the level shows that it is level. This completely avoids the friction data deviation caused by the inclination of the reference and improves the overall efficiency of the equipment.

[0017] (2) Place the friction connector to be tested on the test stand and clamp it by pressing the connector with the pressure block. The stable clamping state allows the detector inside the test stand to accurately collect friction data, reduce measurement errors caused by component shaking, and ensure that the monitoring data is true and reliable.

[0018] (3) During the monitoring process, the protective cover is rotated around the hinge to cover the test seat. Its bottom contact part fits with the contact seat inside the test seat to form a relatively closed test space, reducing the influence of the external environment on the test results, providing a stable environmental basis for friction testing, and improving the effectiveness and comparability of test data.

[0019] (4) After the protective cover is closed, the heating element in the storage box is powered on and heats up, which can simulate friction test under different temperature environments. The high-pressure airflow generated by the air pump is directed to the test part of the friction connector through the delivery pipe and nozzle, avoiding local temperature abnormalities caused by single heating, and providing a strong basis for the performance evaluation of the connector under different temperatures.

[0020] (5) After the contact seat outputs a signal to the controller, the controller controls the fan to start through the wire. The airflow generated by the fan makes the gas inside the protective cover evenly distributed, ensuring the rigor of the friction test under different temperature conditions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the test seat structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the open structure of the protective cover of this utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the pressure block and the detection seat of this utility model;

[0025] Figure 5 This is a cross-sectional view of the test seat structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure between the wire and the controller of this utility model;

[0027] Figure 7 This is a schematic diagram of the connection structure between the wire and the fan in this utility model.

[0028] In the diagram: 1. Base; 2. Test seat; 3. Level; 4. Rotary knob; 5. Screw; 6. Rotating groove; 7. Rotating ball; 8. Moving seat; 9. Detection seat; 10. Snap-fit ​​component; 11. Pressure block; 12. Spring; 13. Protective cover; 14. Storage box; 15. Heating element; 16. Contact element; 17. Contact seat; 18. Air pump; 19. Delivery pipe; 20. Nozzle; 21. Controller; 22. Wire; 23. Fan. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: In this example, the test base 2 allows for easy height fine-tuning until the level 3 displays a horizontal reading, ensuring a stable test reference and completely avoiding friction data deviations caused by reference tilt. Figures 1-4The technical solution shown includes a base 1, a test seat 2 connected to the base 1 via an adjustment assembly, a level 3 mounted on the surface of the test seat 2, and a test assembly on the test seat 2. The adjustment assembly includes a screw 5 mounted on the base 1, a rotary knob 4 mounted on the outside of the screw 5, a rotating groove 6 at the bottom of the test seat 2, a rotating ball 7 installed inside the rotating groove 6, the screw 5 passing through the rotating groove 6, and the rotating ball 7 being adapted to the external thread of the screw 5. The test assembly includes a movable seat 8 mounted on the test seat 2, a detection seat 9 slidably connected to the movable seat 8, a snap-fit ​​component 10 passing through the detection seat 9, a spring 12 sleeved on the outside of the snap-fit ​​component 10, and a pressure block 11 snapped onto the snap-fit ​​component 10. The device is placed on a platform via the base 1, and the level of the test seat 2 as displayed by the level 3 is observed. If there is any tilt, the rotary knob 4 is rotated, which drives the screw 5 to rotate. The threaded joint 6 is adapted to the rotating ball 7 in the rotating groove 6. The rotating ball 7 moves up and down along the screw 5 with the thread drive, which makes it easy to fine adjust the height of the test seat 2 until the level 3 shows horizontal, ensuring the stability of the test benchmark and completely avoiding the deviation of friction data caused by the benchmark tilt. Moreover, the adjustment process does not require disassembling the equipment, which greatly shortens the preparation time before the test and improves the efficiency of equipment use. The friction connector to be tested is placed on the test seat 2 and clamped and limited by the clamping structure. At this time, the pressure block 11 is inserted into the snap-fit ​​part 10, and the test seat 9 is driven to slide along the moving seat 8 to the test position. The pressure block 11 presses the friction connector tightly, and the clamping and fixing are completed to prevent the component from shifting during the test. At this time, the test seat 2 drives the snap-fit ​​part 10 to compress the outer spring 12. The spring 12 returns to its original position and pushes the snap-fit ​​part 10 to drive the pressure block 11 to move. At this time, the detector inside the test seat 9 detects the friction data for monitoring.

[0031] Example 2: In this example, the heating element 15 inside the storage box 14 is energized and heats up, which can simulate friction tests under different temperature environments, specifically as follows: Figure 3 and Figure 5As shown, a protective cover 13 is connected to the test base 2 via a hinge. A temperature regulating component is installed inside the test base 2, including a storage box 14. A heating element 15 is installed inside the storage box 14. A contact element 16 is installed at the bottom of the protective cover 13. A contact seat 17, compatible with the contact element 16, is installed inside the test base 2. An auxiliary component is connected to the output end of the contact seat 17. The auxiliary component includes an air pump 18 installed inside the test base 2. The air pump 18 is electrically connected to the contact seat 17. A delivery pipe 19 is connected to the output end of the air pump 18. The delivery pipe 19 communicates with the inner cavity of the storage box 14 and extends through the inside of the protective cover 13. A nozzle 20 is connected to the end of the delivery pipe 19, which rotates around the hinge during monitoring. A protective cover 13 is installed to cover the test base 2. At this time, the contact 16 at the bottom of the protective cover 13 is in contact with the contact base 17 inside the test base 2. The protective cover 13 reduces the impact of the external environment on the test results. The heating element 15 in the storage box 14 is energized and heats up, which can simulate friction tests under different temperature environments. At this time, the contact base 17 outputs an energizing signal to the air pump 18. The air pump 18 starts to generate a high-pressure airflow. The airflow is delivered to the inside of the protective cover 13 through the delivery pipe 19, and finally sprayed directionally onto the test part of the friction connector through the nozzle 20. The local temperature is regulated by the airflow, which supplements the environmental control effect of the heating element 15. The test is carried out after the temperature stabilizes, so that the test data under high and low temperature conditions are closer to the actual use scenario and improve the test reference value.

[0032] Example 3: In this example, the airflow generated by fan 23 ensures uniform gas distribution inside the protective cover 13. Testing is conducted after the overall temperature stabilizes, thus guaranteeing the rigor of the friction test simulating different temperature environments. Specifically, as follows... Figure 1 , Figure 6 and Figure 7 As shown, the auxiliary components include a controller 21 installed inside the test holder 2. The controller 21 is electrically connected to the contact seat 17. The controller 21 is connected to a fan 23 via a wire 22, which passes through the inside of the protective cover 13. The contact 16 at the bottom of the protective cover 13 is in contact with the contact seat 17 inside the test holder 2. The contact seat 17 outputs a signal to the controller 21, and the controller 21 controls the fan 23 to start via the wire 22. The airflow generated by the fan 23 directly acts on the test area inside the protective cover 13, making the gas inside the protective cover 13 uniform. The test is performed after the temperature stabilizes, thereby ensuring the rigor of the friction test under different temperature conditions. The contents not described in detail in this specification are prior art known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic friction test bench for friction couplings, comprising a base (1), characterized in that, The base (1) is connected to the test seat (2) via an adjustment component. A level (3) is mounted on the surface of the test seat (2). The test seat (2) is equipped with a test component. The adjustment component includes a screw (5) mounted on the base (1). A rotating knob (4) is mounted on the outside of the screw (5). A rotating groove (6) is opened at the bottom of the test seat (2). A rotating ball (7) is installed inside the rotating groove (6). The screw (5) is connected through the rotating groove (6). The rotating ball (7) is adapted to the external thread of the screw (5).

2. The dynamic friction test bench for friction couplings according to claim 1, characterized in that: The test assembly includes a movable seat (8) mounted on a test seat (2), a detection seat (9) slidably connected to the movable seat (8), a snap-fit ​​component (10) penetrating inside the detection seat (9), a spring (12) sleeved on the outside of the snap-fit ​​component (10), and a pressure block (11) snapped onto the snap-fit ​​component (10).

3. The dynamic friction test bench for friction couplings according to claim 1, characterized in that: The test base (2) is connected to a protective cover (13) by a hinge. The test base (2) is equipped with a temperature regulating component. The temperature regulating component includes a storage box (14) installed inside the test base (2). The storage box (14) is equipped with a heating element (15).

4. The dynamic friction test bench for friction couplings according to claim 3, characterized in that: The bottom of the protective cover (13) is equipped with a contact (16), and the test seat (2) is provided with a contact seat (17) that is compatible with the contact (16). The output end of the contact seat (17) is connected to an auxiliary component.

5. The dynamic friction test bench for friction couplings according to claim 4, characterized in that: The auxiliary component includes an air pump (18) installed inside the test seat (2), the air pump (18) being electrically connected to the contact seat (17), and the output end of the air pump (18) being connected to a delivery pipe (19).

6. The dynamic friction test bench for friction couplings according to claim 5, characterized in that: The conveying pipe (19) is connected to the inner cavity of the storage box (14), and the conveying pipe (19) is connected through the inside of the protective cover (13). The end of the conveying pipe (19) is connected to a nozzle (20).

7. The dynamic friction test bench for friction couplings according to claim 5, characterized in that: The auxiliary component includes a controller (21) installed inside the test socket (2), which is electrically connected to the contact seat (17).

8. The dynamic friction test bench for friction couplings according to claim 7, characterized in that: The controller (21) is connected to the fan (23) via a wire (22), which runs through the inside of the protective cover (13).

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