Temperature and pressure test experiment table for brake damping silencing sheet

Abstract

The invention relates to the field of temperature and pressure testing of damping and silencing sheets, and provides a temperature and pressure testing experiment table for a brake damping and silencing sheet, which comprises a base provided with an electrical system; the device further comprises a detection mechanism. The detection mechanism comprises a bottom plate, a support frame, a heating plate, a working table, a movable oil cylinder, a pressure head and an inductive switch; the height-adjustable inductive switch is arranged in the detection chamber, so that the detection efficiency is effectively improved; meanwhile, the shape of the pressure head is the same as that of the piston, so that the brake damping silencing sheet can be better positioned, and the stability of the brake damping silencing sheet in the detection process is improved; the hydraulic station controls the stroke of the movable oil cylinder through the pressure transmitter, and the precision is higher; the device simulates the limiting conditions in the actual braking process, accurately tests the performance and durability of the brake damping silencing sheet, and effectively ensures the quality of the brake damping silencing sheet.

Description

Technical Field

[0001] The invention relates to the field of temperature and pressure testing of shock-absorbing and noise-absorbing films, in particular to a temperature and pressure testing test bench for brake shock-absorbing and noise-absorbing films. Background Art

[0002] With the rapid development of the automobile industry, the performance requirements for automobile parts are increasing day by day; brake pads are key safety components on automobiles, and their performance directly affects the braking effect and driving safety of the automobile; brake shock-absorbing and noise-absorbing pads, as an important component of brake pads, absorb vibrations, reduce noise, and protect brake pads from impact damage during braking; however, due to inadequate detection, the quality of brake shock-absorbing and noise-absorbing pads on the market is uneven, making it difficult to guarantee their limits and durability; therefore, it is particularly important to develop a test bench that can accurately and efficiently test the performance and limits of brake shock-absorbing and noise-absorbing pads. Summary of the invention

[0003] The present invention proposes a temperature and pressure test bench for brake shock absorbing and noise reduction plates. By arranging a height-adjustable inductive switch in the detection room, the control system can control the stroke of the mobile oil cylinder more quickly and accurately, ensuring that the pressure head can position and release the brake shock absorbing and noise reduction plate more quickly, effectively improving the detection efficiency; at the same time, the pressure head is set to have the same shape as the piston, which can better position the brake shock absorbing and noise reduction plate, improve the stability of the brake shock absorbing and noise reduction plate during the detection process, and thus ensure the detection efficiency; at the same time, the hydraulic station controls the stroke of the mobile oil cylinder through the pressure transmitter, and there is no need to control the servo one-way valve, so the accuracy is higher and the detection effect is better; the equipment simulates the extreme conditions in the actual braking process, and accurately tests the performance and durability of the brake shock absorbing and noise reduction plate, effectively ensuring the quality of the brake shock absorbing and noise reduction plate.

[0004] The technical solution of the present invention is achieved in this way: A temperature and pressure test bench for a brake damping and noise-absorbing plate comprises: a base, on which an electrical system is arranged; It also includes testing agencies; The detection mechanism includes a bottom plate, a support frame, a heating plate, a work surface, a movable oil cylinder, a pressure head and an induction switch; The bottom plate is mounted on the top surface of the base; The support frame is installed on the bottom plate, and a detection chamber is formed between the support frame and the bottom plate; The heating plate, work surface, pressure head and induction switch are all located in the detection chamber; The heating plate is mounted on the bottom plate; The work surface is installed on the heating plate, and the heating plate heats the work surface; The movable oil cylinder is installed on the top of the support frame and passes through the support frame; The hydraulic rod of the mobile oil cylinder faces downward, and the pressure head is installed at the lower end of the hydraulic rod; The pressure head is located directly above the work surface, and the pressure head and the work surface simultaneously clamp and position the workpiece to be inspected; A temperature sensor is installed on the heating plate; The induction switch is slidably mounted on the support frame, the induction switch is located in the detection chamber and on the side of the pressure head, and the height of the induction switch is adjustable; The detection mechanism also includes a control system, a temperature meter, a pressure gauge, an emergency stop button and a start button; The heating plate, the mobile oil cylinder, the temperature sensor, the induction switch, the temperature meter, the pressure gauge, the emergency stop button and the start button are all connected to the control system; The control system, heating plate, mobile oil cylinder, temperature sensor, induction switch, temperature meter, pressure gauge, emergency stop button and start button are all connected to the electrical system.

[0005] Further, the support frame includes a top wall and a left support wall and a right support wall with the same structure, the left support wall and the right support wall are symmetrically installed on the bottom plate, and the top wall is installed on the left support wall and the right support wall at the same time; The detection chamber is formed between the left supporting wall, the top wall, the right supporting wall and the bottom plate; The movable oil cylinder is installed on the top wall, and the pressure head is located below the top wall.

[0006] Further, the heating plate is mounted on the bottom plate through a heat insulation plate; The heat insulation board is located in the detection chamber.

[0007] Furthermore, the temperature adjustment range of the heating plate is 0-350°C.

[0008] Furthermore, the shape of the bottom of the pressure head is adapted to the shape of the piston of the brake.

[0009] Furthermore, a sensing iron is installed on the pressure head, and the sensing switch senses the position of the pressure head through the sensing iron.

[0010] Furthermore, a sensing window is provided on the left supporting wall or the right supporting wall, the sensing switch passes through the sensing window, and the inner end of the sensing switch extends into the detection chamber.

[0011] Furthermore, an induction switch bracket is provided at the bottom of the top wall, a threaded positioning portion is provided on the induction switch, a first nut and a second nut are installed on the threaded positioning portion, the first nut and the second nut are simultaneously installed on the threaded positioning portion, a slide groove is provided on the induction switch bracket, the threaded positioning portion passes through the slide groove, the first nut and the second nut are respectively located on both sides of the induction switch bracket and are clamped on the induction switch bracket at the same time.

[0012] Furthermore, a protective cover is provided outside the support frame; The control system, temperature instrument, pressure gauge, emergency stop button and start button are all installed on the protective cover; The mobile oil cylinder, temperature meter, pressure gauge, emergency stop button and start button are all connected to the control system; The moving oil cylinder is located in the protective cover.

[0013] Furthermore, the control system is a PLC control system; A hydraulic station is installed in the base; The hydraulic station is connected to the PLC control system via a pressure transmitter; The hydraulic cylinder is connected to the hydraulic station; The hydraulic cylinder is connected to the hydraulic station via a servo reversing valve, and the servo reversing valve is connected to the PLC control system.

[0014] The present invention arranges a height-adjustable inductive switch in the detection room, so that the control system can control the stroke of the mobile cylinder more quickly and accurately, ensuring that the pressure head can position and release the brake shock-absorbing and noise-absorbing plate more quickly, thereby effectively improving the detection efficiency; at the same time, the pressure head is arranged to have the same shape as the piston, which can better position the brake shock-absorbing and noise-absorbing plate, improves the stability of the brake shock-absorbing and noise-absorbing plate during the detection process, and thus ensures the detection efficiency; at the same time, the hydraulic station controls the stroke of the mobile cylinder through the pressure transmitter, and there is no need to control the servo one-way valve, so the accuracy is higher and the detection effect is better; the equipment simulates the extreme conditions in the actual braking process, accurately tests the performance and durability of the brake shock-absorbing and noise-absorbing plate, and effectively ensures the quality of the brake shock-absorbing and noise-absorbing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1It is a structural schematic diagram of a temperature and pressure test bench for brake shock-absorbing and noise-reducing plates in a specific embodiment of the present invention; Figure 2 for Figure 1 A structural front view of a detection mechanism for a temperature and pressure test bench for brake shock-absorbing and noise-reducing plates is shown; Figure 3 for Figure 2 The main structural sectional view of the detection mechanism shown; Explanation of the reference numerals: base 1; electrical system 2; detection mechanism 3; detection chamber 301; bottom plate 31; support frame 32; top wall 322; left support wall 321; right support wall 323; sensing window 324; sensing switch bracket 325; slide 326; heating plate 33; work surface 34; moving cylinder 35; pressure head 36; sensing switch 37; slide 371; first nut 372; second nut 373; control system 4; temperature meter 41; pressure gauge 42; emergency stop button 43; start button 44; protective cover 5. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In a specific embodiment of the present invention, see Figure 1-Figure 3 , a temperature and pressure test bench for brake shock-absorbing and noise-reducing plates, comprising: a base 1, on which an electrical system 2 is arranged; It also includes a detection mechanism 3, which is used to locate and detect the component to be detected; The detection mechanism 3 includes a bottom plate 31, a support frame 32, a heating plate 33, a work surface 34, a moving cylinder 35, a pressure head 36 and a sensor switch 37; The bottom plate 31 is detachably mounted on the top surface of the base 1 using bolts, so as to facilitate replacement and movement of the entire detection mechanism; The support frame 32 is detachably mounted on the bottom plate 31 by bolts, and a detection chamber 301 is formed between the support frame 32 and the bottom plate 31; The heating plate 33, the work surface 34, the pressure head 36 and the induction switch 37 are all located in the detection chamber 301; The heating plate 33 is installed on the bottom plate 31; The work surface 34 is installed on the heating plate 33, and the heating plate 33 heats the work surface 34; The movable cylinder 35 is installed on the top of the support frame 32 and passes through the support frame 32; the movable cylinder 35 can be replaced by a servo electric cylinder; The hydraulic rod of the moving oil cylinder 35 is downward, and the pressure head 36 is installed at the lower end of the hydraulic rod; The pressure head 36 is located directly above the work surface 34, and the pressure head 36 and the work surface 34 simultaneously clamp and position the workpiece to be inspected; the pressure head 36 and the work surface 34 cooperate to clamp the component to ensure its stability during the inspection process; The heating plate 33 is provided with a temperature sensor to monitor the temperature of the heating plate 33 in real time; The induction switch 37 is slidably mounted on the support frame 32. The induction switch 37 is located in the detection chamber 301 and on the side of the pressure head 36. The position of the pressure head 36 is monitored. The height of the induction switch 37 is adjustable to adapt to the position detection of the pressure head 36 when the mobile cylinder 35 has different strokes. The induction switch 37 can be replaced by a proximity switch. The detection mechanism 3 also includes a control system 4, a temperature meter 41, a pressure gauge 42, an emergency stop button 43 and a start button 44; The heating plate 33, the moving cylinder 35, the temperature sensor, the temperature meter 41, the induction switch 37, the pressure gauge 42, the emergency stop button 43 and the start button 44 are all connected to the control system 4; The control system 4 , the heating plate 33 , the moving cylinder 35 , the temperature sensor, the induction switch 37 , the temperature meter 41 , the pressure gauge 42 , the emergency stop button 43 and the start button 44 are all connected to the electrical system 2 .

[0019] In a specific embodiment of the present invention, see Figure 1-Figure 3 The support frame 32 includes a top wall 322 and a left support wall 321 and a right support wall 323 of the same structure. The left support wall 321 and the right support wall 323 are symmetrically mounted on the bottom plate 31 by bolts, and the top wall 322 is simultaneously mounted on the left support wall 321 and the right support wall 323; The detection chamber 301 is formed between the left support wall 321, the top wall 322, the right support wall 323 and the bottom plate 31; The moving cylinder 35 is installed on the top wall 322 , and the pressure head 36 is located below the top wall 322 .

[0020] In a specific embodiment of the present invention, see Figure 1-Figure 3 The heating plate 33 is installed on the bottom plate 31 through a heat insulating plate 331, and the heat insulating plate 331 is provided to protect the bottom plate 31; The heat insulation board 33 is located in the detection chamber 301 .

[0021] In a specific embodiment of the present invention, see Figure 1-Figure 3 The temperature adjustment range of the heating plate 33 is 0-350° C., and has a wide range of applications.

[0022] In a specific embodiment of the present invention, see Figure 1-Figure 3 The bottom shape of the pressure head 36 is adapted to the shape of the brake piston, ensuring that the pressure head 36 can better position the brake shock-absorbing and noise-absorbing plate and ensure the stability of the brake shock-absorbing and noise-absorbing plate during the detection process.

[0023] In a specific embodiment of the present invention, see Figure 1-Figure 3 The pressure head 36 is equipped with an induction iron, and the induction switch senses the position of the pressure head 36 through the induction iron. When working, the induction switch 37 determines the position of the pressure head by whether the induction iron is sensed, and the control system 4 controls the stroke of the mobile cylinder based on this.

[0024] In a specific embodiment of the present invention, see Figure 1-Figure 3 A sensing window is provided on the left supporting wall or the right supporting wall, the sensing switch passes through the sensing window, and the inner end of the sensing switch extends into the detection chamber.

[0025] In a specific embodiment of the present invention, see Figure 1-Figure 3 A sensing switch bracket 325 is provided at the bottom of the top wall 322, a threaded positioning portion 371 is provided on the sensing switch 37, a first nut 372 and a second nut 373 are installed on the threaded positioning portion 371, the first nut 372 and the second nut 373 are simultaneously installed on the threaded positioning portion 371, a slide groove 326 is provided on the sensing switch bracket 325, the threaded positioning portion 371 passes through the slide groove 326, the first nut 372 and the second nut 373 are respectively located on both sides of the sensing switch bracket 325 and are clamped on the sensing switch bracket 325 at the same time.

[0026] In a specific embodiment of the present invention, see Figure 1-Figure 3 The support frame 32 is provided with a protective cover 5 to protect the internal detection mechanism and provide installation support for the control system 4 and various instruments and buttons; The control system 4, the temperature meter 41, the pressure gauge 42, the emergency stop button 43 and the start button 44 are all installed on the protective cover 5; The temperature meter 41, the pressure gauge 42, the emergency stop button 43 and the start button 44 are all connected to the control system 4; The moving cylinder 35 is located inside the protective cover 5 .

[0027] In a specific embodiment of the present invention, see Figure 1-Figure 3, the control system 4 is a PLC control system; A hydraulic station is installed in the base 1; The hydraulic station is connected to the PLC control system 4 via a pressure transmitter; The hydraulic cylinder 35 is connected to the hydraulic station.

[0028] In a specific embodiment of the present invention, see Figure 1-Figure 3 , the hydraulic cylinder 35 is connected to the hydraulic station through a servo reversing valve, and the servo reversing valve is connected to the PLC control system; The servo check valve can be replaced by an electromagnetic check valve.

[0029] In a specific embodiment of the present invention, see Figure 1-Figure 3 , workflow: 1. Fix the brake shock absorber and silencer on the work surface; 2. Set the required pressure according to experimental requirements; 3. Set the required temperature according to experimental requirements; 4. Set the required number of presses according to experimental requirements; 5. Press the start button to start the program and begin the experiment; 6. The hydraulic rod of the mobile oil cylinder extends downward, driving the pressure head to press down. After pressing, the servo reversing valve changes direction, and the hydraulic rod of the mobile oil cylinder moves upward to release the components; 7. When the induction switch senses the induction iron on the pressure head, the servo reversing valve changes direction, and the piston of the mobile cylinder is pressed down, and this reciprocating cycle is repeated until the required number of experiments is reached; 8. After the experiment, take out the brake shock absorber and silencer.

[0030] In a specific embodiment of the present invention, see Figure 1-Figure 3 The bottom plate of the detection mechanism is connected to the base by bolts, which is easy to install and disassemble; The support frame is connected to the bottom plate of the base plate by bolts; The protective cover is connected to the bottom plate by bolts; A heat insulation board is installed under the heating plate to prevent high temperature from being transferred to the bottom plate, thus preventing people from getting burned and improving safety performance; The temperature adjustment range of the heating plate is between 0-350℃; The temperature sensor is installed on the working platform to ensure the accuracy of the temperature; The mobile oil cylinder is connected to the support frame with bolts, which makes disassembly and installation more convenient, and is easy to repair and replace; The induction switch is mounted on the induction switch bracket. The height of the induction switch is changed by loosening and tightening the first nut 372 and the second nut 373, so that the induction height can be adjusted, and the stroke of the pressure head can be adjusted accordingly, so that the upward stroke of the mobile cylinder piston can be effectively reduced, saving the time of pressing down and moving up, and improving the detection efficiency of components of different specifications; The pressure head and the hydraulic rod of the mobile cylinder are assembled together by threaded connection, and the pressure surface of the pressure head must be parallel to the working platform to ensure that the detection is in place; The bottom of the pressure head simulates the piston shape of the brake, making the experimental process more realistic and ensuring the accuracy and authenticity of the experimental results; The hydraulic station is installed inside the base, invisible from the outside, and fixed inside the base with bolts; The hydraulic station is equipped with a servo reversing valve, which has a fast reversing speed. The number of times the mobile cylinder is pressed down can reach 1s / time, which makes the detection efficiency higher and the results more stable. The hydraulic station is also equipped with a pressure transmitter, which is directly connected to the PLC control system. The pressure can be set directly on the display screen without adjusting the throttle valve on the hydraulic station. The pressure adjustment is simpler and more efficient. This test bench has high efficiency, and the pressure, temperature, and number of presses can be adjusted on the display screen. It is easy to operate and has a simple structure. It is not prone to mechanical failures, which effectively ensures the experimental efficiency and speed.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates, comprising: A base, wherein an electrical system is arranged on the base; It is characterized by: it also includes a detection mechanism; The detection mechanism includes a bottom plate, a support frame, a heating plate, a work surface, a movable oil cylinder, a pressure head and an induction switch; The bottom plate is mounted on the top surface of the base; The support frame is installed on the bottom plate, and a detection chamber is formed between the support frame and the bottom plate; The heating plate, work surface, pressure head and induction switch are all located in the detection chamber; The heating plate is mounted on the bottom plate; The work surface is installed on the heating plate, and the heating plate heats the work surface; The movable oil cylinder is installed on the top of the support frame and passes through the support frame; The hydraulic rod of the mobile oil cylinder faces downward, and the pressure head is installed at the lower end of the hydraulic rod; The pressure head is located directly above the work surface, and the pressure head and the work surface simultaneously clamp and position the workpiece to be inspected; A temperature sensor is installed on the heating plate; The induction switch is slidably mounted on the support frame, the induction switch is located in the detection chamber and on the side of the pressure head, and the height of the induction switch is adjustable; The detection mechanism also includes a control system, a temperature meter, a pressure gauge, an emergency stop button and a start button; The heating plate, the mobile oil cylinder, the temperature sensor, the induction switch, the temperature meter, the pressure gauge, the emergency stop button and the start button are all connected to the control system; The control system, heating plate, mobile oil cylinder, temperature sensor, induction switch, temperature meter, pressure gauge, emergency stop button and start button are all connected to the electrical system.

2. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 1, characterized in that: The support frame includes a top wall and a left support wall and a right support wall of the same structure, wherein the left support wall and the right support wall are symmetrically mounted on the bottom plate, and the top wall is simultaneously mounted on the left support wall and the right support wall; The detection chamber is formed between the left supporting wall, the top wall, the right supporting wall and the bottom plate; The movable oil cylinder is installed on the top wall, and the pressure head is located below the top wall.

3. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 1, characterized in that: The heating plate is mounted on the bottom plate through a heat insulation plate; The heat insulation board is located in the detection chamber.

4. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 1, characterized in that: The temperature adjustment range of the heating plate is 0-350°C.

5. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 1, characterized in that: The shape of the bottom of the pressure head is adapted to the shape of the piston of the brake.

6. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 1, characterized in that: The pressure head is equipped with an induction iron, and the induction switch senses the position of the pressure head through the induction iron.

7. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 2, characterized in that: A sensing window is arranged on the left supporting wall or the right supporting wall, the sensing switch passes through the sensing window, and the inner end of the sensing switch extends into the detection chamber.

8. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 2, characterized in that: An induction switch bracket is provided at the bottom of the top wall, a threaded positioning portion is provided on the induction switch, a first nut and a second nut are installed on the threaded positioning portion, the first nut and the second nut are simultaneously installed on the threaded positioning portion, a slide groove is provided on the induction switch bracket, the threaded positioning portion passes through the slide groove, the first nut and the second nut are respectively located on both sides of the induction switch bracket and are simultaneously clamped on the induction switch bracket.

9. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 2, characterized in that: A protective cover is arranged outside the support frame; The control system, temperature instrument, pressure gauge, emergency stop button and start button are all installed on the protective cover; The mobile oil cylinder, temperature meter, pressure gauge, emergency stop button and start button are all connected to the control system; The moving oil cylinder is located in the protective cover.

10. A temperature and pressure test bench for brake shock-absorbing and noise-reducing plates as claimed in claim 1, characterized in that: The control system is a PLC control system; A hydraulic station is installed in the base; The hydraulic station is connected to the PLC control system via a pressure transmitter; The hydraulic cylinder is connected to the hydraulic station; The hydraulic cylinder is connected to the hydraulic station via a servo reversing valve, and the servo reversing valve is connected to the PLC control system.

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