A device for testing the friction of an automobile friction plate

Abstract

The utility model provides a kind of automobile friction plate friction testing device, it is related to friction test technical field, including base, the base upper surface one side is equipped with the placement slot for storing friction plate body, the base upper surface other side is fixedly installed with boss, the placement slot bottom is installed with transverse heat exchange plate, the placement slot inner wall is provided with vertical heat exchange plate, the vertical heat exchange plate is C-shaped setting, the transverse heat exchange plate and vertical heat exchange plate inside are all provided with heat exchange channel, the base one side is provided with cooling assembly for cooling friction plate body.The utility model cooling assembly enables to complete friction test after by PLC controller start-stop circulating pump whether active cooling is realized, so that active cooling can be carried out before taking out friction plate body, so that vertical heat exchange plate and transverse heat exchange plate can be actively cooled to friction plate body, so that friction plate body can be quickly taken out after completing processing to avoid scalding operator.

Description

Technical Field

[0001] This utility model relates to the field of friction testing technology, and more specifically, to a friction testing device for automotive friction pads. Background Technology

[0002] In the process of automobile manufacturing and R&D, the friction performance testing of automotive friction pads is a key step in ensuring their quality and safety. Friction performance is determined by assessing the wear state of the friction pad surface after friction testing. For example, patent publication number CN118583766A describes a friction pad friction coefficient performance testing device, which relates to the field of automotive parts technology. This friction pad friction coefficient performance testing device includes a working base plate, an intermittent rotation assembly, a placement assembly, and a moving assembly. A mounting post is rotatably mounted on the top of the working base plate. The intermittent rotation assembly is located on the mounting post. The placement assembly is located above the working base plate and includes a connecting box, a fixing rod, a semi-circular wheel, a sliding rod, a sliding plate, a slider, a micro motor, and a clamping plate. Multiple sets of connecting boxes are fixedly connected to the bottom of the worktable in a ring shape. A fixing rod is rotatably mounted on the inner bottom of the connecting box. The moving assembly is located on one side of the intermittent rotation assembly.

[0003] While the aforementioned testing device can perform friction tests on friction pads, the intense friction with the friction components during the test generates a large amount of heat, causing a rapid temperature rise. This results in a long cooling time after the test, significantly reducing testing efficiency. Furthermore, if the tester removes the friction pad directly, there is a risk of burns. Therefore, we have made an improvement by proposing an automotive friction pad testing device that can actively cool the pad after the test, shortening the time required to replace the friction pad. Utility Model Content

[0004] The main purpose of this invention is to provide a friction testing device for automotive friction pads, which can effectively solve the problem of decreased testing efficiency caused by excessively high friction pad temperatures after testing in existing testing devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A friction testing device for automotive friction pads includes a base. One side of the upper surface of the base has a placement groove for storing the friction pad body. A boss is fixedly installed on the other side of the upper surface of the base. A fixing component for fixing the friction pad body is installed inside the boss. A horizontal heat exchange plate is installed at the bottom of the placement groove. A vertical heat exchange plate, which is C-shaped, is provided on the inner wall of the placement groove. Both the horizontal and vertical heat exchange plates have heat exchange channels inside. A cooling component for cooling the friction pad body is provided on one side of the base. A friction component for rubbing the friction pad body is provided on the upper side of the base. A PLC controller is provided on one side of the base.

[0007] Preferably, the friction assembly includes a hydraulic rod assembly, which is fixedly installed on both sides of the base. A connecting rod is fixedly installed on the upper end of the hydraulic rod assembly, and a mounting plate is fixedly installed between the connecting rods on both sides. A drive motor is fixedly installed in the middle of the mounting plate, and a friction turntable is fixedly installed at the output end of the drive motor. A speed sensor is fixedly installed on one side of the mounting plate, and the speed sensor, drive motor, and PLC controller are electrically connected.

[0008] Preferably, the bottom of the mounting plate is provided with a connecting groove, and a floating retaining ring is movably installed inside the connecting groove by a support spring. The floating retaining ring is located outside the mounting groove.

[0009] Preferably, the cooling assembly includes a liquid storage tank, with a delivery pipe and a return pipe installed on both sides of the liquid storage tank, and a T-joint installed at one end of each delivery pipe and return pipe. The T-joints on both sides are connected to the adjacent heat exchange channel through pipes, and a circulation pump is provided in the body of the delivery pipe.

[0010] Preferably, the liquid storage tank is provided with a baffle plate inside, and a top cover is provided at the top of the liquid storage tank, with a cooling fan assembly inside the top cover.

[0011] Preferably, the fixing component includes a limiting slide groove, a slide block is movably installed inside the limiting slide groove, a combination groove is provided at one end of the slide block, a combination plate for fitting the friction plate body is installed in the combination groove by snap-fit, heat-conducting plates are provided at both ends of the combination plate, each heat-conducting plate is provided with a heat-conducting rod inside, and the heat-conducting plate is located between the friction plate body and the vertical heat exchange plate.

[0012] Preferably, a through hole is provided on one side of the boss, a bracket is fixedly installed on the outside of the boss, a control motor is fixedly installed inside the bracket, a rotating shaft is fixedly installed at the output end of the control motor, the shaft body passes through the through hole, a control screw is fixedly installed at one end of the rotating shaft, and a threaded hole that is threaded to the control screw is provided inside the slide.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The height of the mounting plate can be adjusted by the hydraulic rod assembly so that the surface of the friction turntable can contact the friction plate body, ensuring more accurate friction test. During the friction process, the floating retaining ring can be pushed down and fit against the outside of the placement groove by the support spring, which can prevent the friction plate body from breaking and causing fragments to splash out during the friction process, ensuring the safety of the test personnel.

[0015] (2) The heat exchange liquid inside the storage tank can be cooled in real time by starting the cooling fan group. The baffle plate can increase the heat exchange liquid's heat dissipation time. In order to cool the friction plate body, the cooled heat exchange liquid is transported from the delivery pipe to the one-way T-connector by starting the circulation pump, and the heat exchange liquid is input into the two heat exchange channel inlets. The other side T-connector is connected to the two heat exchange channel outlets. The heat exchange liquid after heat exchange will flow back to the storage tank from the return pipe and then be cooled by the cooling fan group. Through the above structure, the application can start and stop the circulation pump through the PLC controller after completing the friction test to realize whether to actively cool. This allows active cooling before removing the friction plate body, so that the vertical heat exchange plate and the horizontal heat exchange plate can actively cool the friction plate body. This allows the friction plate body to be quickly removed after processing to avoid scalding the operator and improve the testing efficiency under continuous testing.

[0016] (3) By starting the control screw, the control screw is driven to rotate, and under the limiting cooperation of the limit slide groove and the slide block, the threaded cooperation between the control screw and the threaded hole is used to adjust the position of the combination plate, so that the combination plate can cooperate with the placement groove to fix the friction plate body. The thickness of the combination plate is smaller than that of the friction plate body, and the size of the combination plate can be changed according to the friction plate body to ensure the fixing strength. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0021] Figure 5 This is a three-dimensional structural diagram of the base;

[0022] Figure 6 This is a side view of the base structure.

[0023] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at the CC section;

[0024] Figure 8 This is a schematic diagram of the internal heat exchange channel structure of the horizontal heat exchange plate.

[0025] In the diagram: 1. Base; 2. Boss; 3. PLC controller; 4. Friction assembly; 401. Hydraulic rod assembly; 402. Connecting rod; 403. Mounting plate; 4031. Connecting slide; 4032. Support spring; 4033. Floating retaining ring; 404. Drive motor; 405. Speed ​​sensor; 406. Friction turntable; 5. Cooling assembly; 501. Liquid storage tank; 5011. Baffle plate; 502. Top cover; 5021. Cooling fan assembly; 503. Conveying pipe; 504. Return... Flow tube; 505, T-joint; 506, Circulating pump; 6, Placement slot; 7, Vertical heat exchange plate; 8, Horizontal heat exchange plate; 9, Fixing assembly; 901, Through hole; 902, Bracket; 903, Control motor; 904, Rotating shaft; 905, Control screw; 906, Slide; 9061, Threaded hole; 9062, Combination slot; 907, Limiting slide groove; 908, Combination clamping plate; 9081, Heat-conducting plate; 9082, Heat-conducting rod; 10, Friction plate body; 11, Heat exchange channel. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] like Figures 1 to 8 As shown, an automotive friction pad friction testing device includes a base 1. A placement groove 6 for storing the friction pad body 10 is provided on one side of the upper surface of the base 1. A boss 2 is fixedly installed on the other side of the upper surface of the base 1. A fixing component 9 for fixing the friction pad body 10 is installed inside the boss 2. A horizontal heat exchange plate 8 is installed at the bottom of the placement groove 6. A vertical heat exchange plate 7 is provided on the inner wall of the placement groove 6. The vertical heat exchange plate 7 is C-shaped. Both the horizontal heat exchange plate 8 and the vertical heat exchange plate 7 have heat exchange channels 11 inside. A cooling component 5 for cooling the friction pad body 10 is provided on one side of the base 1. A friction component 4 for rubbing the friction pad body 10 is provided on the upper side of the base 1. A PLC controller 3 is provided on one side of the base 1.

[0028] With the vertical heat exchange plate 7 being C-shaped and the horizontal heat exchange plate 8 at the bottom of the placement tank 6, the heat exchange channel 11 allows for continuous flow of heat exchange liquid. This enables the vertical heat exchange plate 7 and the horizontal heat exchange plate 8 to actively cool the friction plate body 10, allowing for quick removal of the friction plate body 10 after processing to prevent burns to operators and improving testing efficiency. The two ends of the heat exchange channel 11 are respectively used to connect to the delivery pipe 503 or the return pipe 504. For example... Figure 8The heat exchange channel 11 shown has several straight grooves connected by corner grooves in the middle, which covers the vertical heat exchange plate 7 and the horizontal heat exchange plate 8.

[0029] In this embodiment, the friction assembly 4 includes a hydraulic rod assembly 401, which is fixedly installed on both sides of the base 1. A connecting rod 402 is fixedly installed on the upper end of the hydraulic rod assembly 401. A mounting plate 403 is fixedly installed between the two connecting rods 402. A drive motor 404 is fixedly installed in the middle of the mounting plate 403. A friction turntable 406 is fixedly installed at the output end of the drive motor 404. A speed sensor 405 is fixedly installed on one side of the mounting plate 403. The speed sensor 405, the drive motor 404 and the PLC controller 3 are electrically connected.

[0030] The bottom of the mounting plate 403 has a connecting groove 4031. Inside the connecting groove 4031, a floating retaining ring 4033 is movably mounted via a support spring 4032. The floating retaining ring 4033 is located outside the placement groove 6. The bottom of the floating retaining ring 4033 is equipped with a sealing ring to improve the sealing between the floating retaining ring 4033 and the placement groove 6, reducing the splashing of fragments.

[0031] By starting the drive motor 404, the friction turntable 406 can be driven to rotate. Under the rotation of the friction turntable 406, it comes into contact with the friction plate body 10, thereby achieving continuous friction on the friction plate body 10. The speed sensor 405 can transmit the current speed information, and in conjunction with the PLC controller 3, the drive motor 404 is controlled to rotate at different speeds, so as to obtain the wear condition of the surface of the friction plate body 10 at different speeds, thereby obtaining the performance of the friction plate body 10.

[0032] The height of the mounting plate 403 can be adjusted by the hydraulic rod assembly 401, so that the surface of the friction turntable 406 can contact the friction plate body 10, ensuring more accurate friction testing. During the friction process, the support spring 4032 can push the floating retaining ring 4033 downward and fit it against the outside of the placement groove 6, which can prevent the friction plate body 10 from breaking and causing fragments to splash out during the friction process, ensuring the safety of the test personnel.

[0033] In this embodiment, the cooling assembly 5 includes a liquid storage tank 501. A delivery pipe 503 and a return pipe 504 are respectively installed on both sides of the liquid storage tank 501. A T-joint 505 is installed at one end of each of the delivery pipe 503 and the return pipe 504. The T-joints 505 on both sides are connected to the adjacent heat exchange channel 11 via pipes. A circulation pump 506 is installed in the body of the delivery pipe 503. A baffle plate 5011 is installed inside the liquid storage tank 501. A top cover 502 is installed at the upper end of the liquid storage tank 501, and a cooling fan assembly 5021 is installed inside the top cover 502. The circulation pump 506 is electrically connected to the PLC controller 3.

[0034] The heat exchange fluid inside the storage tank 501 can be cooled in real time by starting the cooling fan assembly 5021. The baffle plate 5011 can increase the heat exchange fluid's heat dissipation time. In order to cool the friction plate body 10, the circulating pump 506 is started to transport the cooled heat exchange fluid from the delivery pipe 503 to the one-way connector 505 and input the heat exchange fluid into the inlet of the two heat exchange channels 11. The other-way connector 505 is connected to the outlet of the two heat exchange channels 11. After heat exchange, the heat exchange fluid will flow back to the storage tank 501 from the return pipe 504 and is finally cooled by the cooling fan assembly 5021. Through the above structure, after the friction test is completed, the PLC controller 3 can start and stop the circulating pump 506 to determine whether to actively cool, so that active cooling can be performed before the friction plate body 10 is removed.

[0035] In this embodiment, the fixing component 9 includes a limiting slide groove 907, a slide block 906 is movably installed inside the limiting slide groove 907, a combination groove 9062 is provided at one end of the slide block 906, a combination plate 908 for fitting the friction plate body 10 is installed in the combination groove 9062 by snap-fit, heat-conducting plates 9081 are provided at both ends of the combination plate 908, each heat-conducting plate 9081 is provided with a heat-conducting rod 9082 inside, and the heat-conducting plate 9081 is located between the friction plate body 10 and the vertical heat exchange plate 7.

[0036] The boss 2 has a through hole 901 on one side, and a bracket 902 is fixedly installed on the outside of the boss 2. A control motor 903 is fixedly installed inside the bracket 902, and a rotating shaft 904 is fixedly installed at the output end of the control motor 903. The shaft of the rotating shaft 904 passes through the through hole 901, and a control screw 905 is fixedly installed at one end of the rotating shaft 904. A threaded hole 9061 is opened inside the slide 906 to thread with the control screw 905. The control screw 905 is electrically connected to the PLC controller 3.

[0037] By starting the control screw 905, the control screw 905 is rotated. Under the limiting cooperation of the limiting slide groove 907 and the slide block 906, the threaded cooperation between the control screw 905 and the threaded hole 9061 is used to adjust the position of the combination clamping plate 908. This allows the combination clamping plate 908 to cooperate with the placement groove 6 to fix the friction plate body 10. The thickness of the combination clamping plate 908 is less than that of the friction plate body 10, and the size of the combination clamping plate 908 can be replaced according to the friction plate body 10 to ensure the fixing strength.

[0038] During cooling, a heat-conducting rod 9082 is provided inside each heat-conducting plate 9081, and the heat-conducting plate 9081 is located between the friction plate body 10 and the vertical heat exchange plate 7, which can improve the cooling efficiency of the friction plate body 10. The combination plate 908 is a replaceable design, thereby avoiding the situation where the cooling efficiency decreases due to changes in the size of the friction plate body 10.

[0039] Both the heat-conducting rod 9082 and the heat-conducting plate 9081 are made of heat-conducting materials.

[0040] Working principle of this automotive friction pad friction testing device:

[0041] In use, first place the friction plate body 10 in the placement groove 6, then start the control screw 905 to rotate the control screw 905, adjust the position of the combination plate 908 so that the combination plate 908 can cooperate with the placement groove 6 to fix the friction plate body 10.

[0042] After fixing, the height of the mounting plate 403 can be adjusted by the hydraulic rod assembly 401 so that the surface of the friction turntable 406 can contact the friction plate body 10. Then, the drive motor 404 is started to drive the friction turntable 406 to rotate for friction testing.

[0043] During the test, the speed sensor 405 can transmit the current speed information, and the PLC controller 3 can control the drive motor 404 to rotate at different speeds, so as to obtain the wear condition of the friction plate body 10 surface at different speeds.

[0044] When the test is completed, the circulating pump 506 is started to transport the cooled heat exchange liquid from the delivery pipe 503 to the one-sided three-way connector 505, and the heat exchange liquid is input into the inlet of the two heat exchange channels 11. The other side three-way connector 505 is connected to the outlet of the two heat exchange channels 11. Thus, the heat exchange liquid after heat exchange will flow back to the storage tank 501 from the return pipe 504. Through the above structure, after the friction test is completed, the PLC controller 3 can start and stop the circulating pump 506 to realize whether active cooling is possible, so that active cooling can be performed before the friction plate body 10 is removed.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A friction testing device for automotive friction pads, comprising a base (1), characterized in that: The base (1) has a placement groove (6) for storing the friction plate body (10) on one side of its upper surface. A boss (2) is fixedly installed on the other side of the upper surface of the base (1). A fixing component (9) for fixing the friction plate body (10) is installed inside the boss (2). A horizontal heat exchange plate (8) is installed at the bottom of the placement groove (6). A vertical heat exchange plate (7) is provided on the inner wall of the placement groove (6). The vertical heat exchange plate (7) is C-shaped. Both the horizontal heat exchange plate (8) and the vertical heat exchange plate (7) are provided with heat exchange channels (11). A cooling component (5) for cooling the friction plate body (10) is provided on one side of the base (1). A friction component (4) for rubbing the friction plate body (10) is provided on the upper side of the base (1). A PLC controller (3) is provided on one side of the base (1).

2. The friction testing device for automotive friction pads according to claim 1, characterized in that: The friction assembly (4) includes a hydraulic rod assembly (401), which is fixedly installed on both sides of the base (1). A connecting rod (402) is fixedly installed on the upper end of the hydraulic rod assembly (401), and a mounting plate (403) is fixedly installed between the connecting rods (402) on both sides. A drive motor (404) is fixedly installed in the middle of the mounting plate (403), and a friction turntable (406) is fixedly installed at the output end of the drive motor (404). A speed sensor (405) is fixedly installed on one side of the mounting plate (403), and the speed sensor (405), the drive motor (404), and the PLC controller (3) are electrically connected.

3. The friction testing device for automotive friction pads according to claim 2, characterized in that: The bottom of the mounting plate (403) is provided with a connecting groove (4031). A floating retaining ring (4033) is movably installed inside the connecting groove (4031) by a support spring (4032). The floating retaining ring (4033) is located outside the placement groove (6).

4. The friction testing device for automotive friction pads according to claim 1, characterized in that: The cooling assembly (5) includes a liquid storage tank (501), with a delivery pipe (503) and a return pipe (504) installed on both sides of the liquid storage tank (501). A three-way connector (505) is installed at one end of the delivery pipe (503) and the return pipe (504). The three-way connectors (505) on both sides are connected to the adjacent heat exchange channel (11) through pipes. A circulation pump (506) is provided in the body of the delivery pipe (503).

5. The friction testing device for automotive friction pads according to claim 4, characterized in that: The liquid storage tank (501) is provided with a baffle plate (5011) inside, and a top cover (502) is provided at the upper end of the liquid storage tank (501). A cooling fan assembly (5021) is provided inside the top cover (502).

6. The friction testing device for automotive friction pads according to claim 1, characterized in that: The fixing component (9) includes a limiting slide groove (907), in which a slide block (906) is movably installed. One end of the slide block (906) is provided with a combination groove (9062). The combination groove (9062) is fitted with a combination plate (908) for fitting the friction plate body (10) by snap-fit. Both ends of the combination plate (908) are provided with heat-conducting plates (9081). Each heat-conducting plate (9081) is provided with a heat-conducting rod (9082). The heat-conducting plate (9081) is located between the friction plate body (10) and the vertical heat exchange plate (7).

7. The friction testing device for automotive friction pads according to claim 6, characterized in that: A through hole (901) is provided on one side of the boss (2). A bracket (902) is fixedly installed on the outside of the boss (2). A control motor (903) is fixedly installed inside the bracket (902). A rotating shaft (904) is fixedly installed at the output end of the control motor (903). The shaft of the rotating shaft (904) passes through the through hole (901). A control screw (905) is fixedly installed at one end of the rotating shaft (904). A threaded hole (9061) is provided inside the slide (906) to engage with the control screw (905).

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