High pressure measuring device applied to brake clamping force measuring and monitoring

Abstract

The utility model relates to the technical field of brake systems, in particular to a high-pressure measuring device applied to brake clamping force measurement and monitoring. The utility model discloses a high pressure measuring device applied to brake clamping force measurement and monitoring. The high pressure measuring device is characterized in that one side of an assembly fixing area is connected with a pressure measuring area; a fixing plate is connected to the fixing support, an adjusting plate is arranged on the front side of the fixing plate, a thickness adjusting cushion block is arranged between the fixing plate and the adjusting plate, a bolt is connected to the front portion of the adjusting plate, and the bolt penetrates through the adjusting plate and the thickness adjusting cushion block from front to back to be connected with the fixing plate. The side edge of the adjusting plate is connected with the sensor mounting base through a connecting piece, an upper force bearing plate and a lower force bearing plate are arranged on the front side and the rear side of the sensor mounting base respectively, the upper force bearing plate penetrates through the upper force bearing plate through upper force bearing plate fixing screws, and the sensor mounting base is connected with the lower force bearing plate. Compared with the prior art, the device can be used in the development of brake caliper products to monitor the measurement of the brake clamping force.

Description

Technical Field

[0001] This utility model relates to the field of braking system technology, specifically a high-pressure measuring device for measuring and monitoring braking clamping force. Background Technology

[0002] The current mainstream market trend and consumer preference are electrification and larger interior space. Compared to gasoline vehicles, new energy vehicles use electric motors to replace internal combustion engines. The increase in battery capacity and overall vehicle size has led to an increase in vehicle weight, requiring brake calipers with greater braking force to be matched during the development of braking products.

[0003] During the development of brake caliper products, it is necessary to arrange pressure measuring devices within the confined space between the friction pads to complete closed-loop testing. The force measurement range is as high as 60kN, and the arrangement space along the force direction is within 23mm, which poses a significant challenge to the design of the measuring mechanism in bench testing.

[0004] In the research and development and testing process of brake caliper products, accurate measurement of output characteristics such as clamping force is crucial. These key indicators are core elements for measuring product performance and control precision, and their accurate data can comprehensively and truthfully reflect the working status and effectiveness of the brake caliper. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this utility model provides a high-pressure measuring device for measuring and monitoring brake clamping force. This device can be used in the development of brake caliper products to monitor the measurement of brake clamping force. At the same time, this device can be used to simulate the positional relationship between the brake disc and the caliper on the vehicle.

[0006] To achieve the above objectives, a high-pressure measuring device for measuring and monitoring brake clamping force is designed, comprising an assembly and fixing area and a pressure measuring area. The assembly and fixing area is characterized by: one side of the assembly and fixing area being connected to the pressure measuring area; the assembly and fixing area includes a fixed bracket, a fixed plate, an adjusting plate, and a thickness adjusting pad; the fixed bracket is connected to the fixed plate, the front side of the fixed plate is provided with an adjusting plate, and a thickness adjusting pad is provided between the fixed plate and the adjusting plate; a bolt is connected to the front of the adjusting plate, and the bolt passes through the adjusting plate and the thickness adjusting pad from front to back, connecting to the fixed plate; the pressure measuring area includes a sensor mounting base, an upper support plate, and a lower support plate; the side of the adjusting plate is connected to the sensor mounting base via a connector; the upper support plate and the lower support plate are provided on the front and rear sides of the sensor mounting base, respectively; and the upper support plate is connected to the lower support plate via upper support plate fixing screws passing through the upper support plate, the sensor mounting base, and the lower support plate.

[0007] The described sensor mounting base has a "convex" - shaped panel structure. The side end of the sensor mounting base is connected to the side of the adjustment plate by bolts. The sensor mounting base has several sensor grooves. One side of the sensor groove has a first cable groove. A sensor is provided in the sensor groove, and the bottom of the sensor is connected to a cable, which is embedded in the first cable groove.

[0008] The described adjustment plate has a rectangular panel structure. The middle of the adjustment plate has a second cable groove. The lower part of the second cable groove has a linear groove structure, and the upper part has a three - fork groove structure. The exit position of the three - fork groove corresponds to the entrance position of the first cable groove. Horizontally arranged in the lower part of the second cable groove is an oval groove, in which a pressing wire cover plate is embedded, and the pressing wire cover plate is connected to the adjustment plate by bolts. On the left and right sides of the second cable groove are respectively provided oval holes for connecting bolts.

[0009] The described upper bearing plate fixing screw has a T - shaped screw structure. The nut of the upper bearing plate fixing screw is a disc - shaped structure, and the screw rod of the upper bearing plate fixing screw is a stepped screw rod, and an external thread is provided at the lower part of the screw rod.

[0010] The end face of the described upper bearing plate fixing screw is lower than the upper bearing plate, and there is a floating gap between the end face of the bearing plate fixing screw and the upper bearing plate.

[0011] The described thickness adjustment pad has an inner connection adjusting cylinder in a cylindrical sleeve structure, and the cylindrical sleeve structure and the adjusting cylinder are connected by internal and external threads. A through - hole for connecting bolts is provided in the middle of the adjusting cylinder.

[0012] The described fixed bracket includes a fixed bottom plate and a rectangular column. The rectangular column is connected to the fixed bottom plate, and several sliding grooves are provided on the rectangular column.

[0013] Compared with the prior art, the present utility model provides a high - pressure measuring device applied to the measurement and monitoring of braking clamping force. This device can be used in the development of brake caliper products to monitor the measurement of braking clamping force. At the same time, with this device, the positional relationship between the brake disc and the caliper on the vehicle can be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three - dimensional structure diagram of the present utility model.

[0015] Figure 2 It is a top - view structure diagram of the present utility model.

[0016] Figure 3 It is an exploded - view structure diagram of the present utility model.

[0017] Figure 4 It is a schematic diagram of the regional division of the structure of the present utility model.

[0018] Figure 5 This is the front view of the assembly and fixing area and the pressure measurement area of the present utility model.

[0019] Figure 6 It is Figure 5 the top view of.

[0020] Figure 7 It is Figure 6 the enlarged schematic view of A-A in

[0021] Figure 8 It is the structural diagram of the fixing screw of the upper bearing plate.

[0022] Refer to Figures 1 to 7 , 1 is the lower bearing plate, 2 is the sensor mounting base, 2-1 is the sensor groove, 2-2 is the first cable groove, 3 is the upper bearing plate, 4 is the fixing screw of the upper bearing plate, 5 is the adjusting plate, 5-1 is the second cable groove, 5-2 is the kidney-shaped groove, 5-3 is the kidney-shaped hole, 6 is the wire pressing cover plate, 7 is the fixing plate, 8 is the bolt, 9 is the brake caliper, 10 is the fixing bracket, 10-1 is the fixing bottom plate, 10-2 is the rectangular column, 10-3 is the sliding groove, 11 is the thickness adjusting pad, 12 is the toggle bolt. Specific implementation mode

[0023] The following further describes the present utility model according to the attached drawings.

[0024] As Figures 1 to 8 shown, one side of the assembly and fixing area is connected to the pressure measurement area; the assembly and fixing area includes a fixing bracket, a fixing plate, an adjusting plate, and a thickness adjusting pad. The fixing bracket 10 is connected to the fixing plate 7, the adjusting plate 5 is provided on the front side of the fixing plate 7, the thickness adjusting pad 11 is provided between the fixing plate 7 and the adjusting plate 5, the bolt 8 is connected to the front part of the adjusting plate 5, and the bolt 8 respectively passes through the adjusting plate 5, the thickness adjusting pad 11 and the fixing plate 7 from front to back for connection; the pressure measurement area includes a sensor mounting base, an upper bearing plate, and a lower bearing plate. The side of the adjusting plate 5 is connected to the sensor mounting base 2 through a connecting member. The upper bearing plate 3 and the lower bearing plate 1 are respectively provided on the front and rear sides of the sensor mounting base 2, and the upper bearing plate 3 is connected to the lower bearing plate 1 through the fixing screw 4 of the upper bearing plate passing through the upper bearing plate 3 and the sensor mounting base 2.

[0025] The sensor mounting base 2 has a "convex" - shaped panel structure. The side end of the sensor mounting base 2 is connected to the side of the adjusting plate 5 through a bolt. A plurality of sensor grooves 2-1 are provided on the sensor mounting base 2. A first cable groove 2-2 is provided on one side of the sensor groove 2-1. A sensor is provided in the sensor groove 2-1. The bottom of the sensor is connected to a cable, and the cable is embedded in the first cable groove 2-2.

[0026] The adjustment plate 5 has a rectangular panel structure. The middle part of the adjustment plate 5 is provided with a second cable groove 5-1. The lower part of the second cable groove 5-1 is a straight groove structure, and the upper part of the second cable groove 5-1 is a three-pronged groove structure. The outlet position of the three-pronged groove corresponds to the inlet position of the first cable groove 2-2. The lower part of the second cable groove 5-1 is provided with a waist-shaped groove 5-2. The waist-shaped groove 5-2 is embedded with a wire pressing cover plate 6, and the wire pressing cover plate 6 is connected to the adjustment plate 5 by bolts. Waist-shaped holes 5-3 for connecting bolts 8 are provided on the left and right sides of the second cable groove 5-1, respectively.

[0027] The upper support plate fixing screw 4 has a T-shaped screw structure, the nut of the upper support plate fixing screw 4 has a disc-shaped structure, the screw of the upper support plate fixing screw 4 has a stepped screw, and the lower part of the screw has an external thread.

[0028] The end face of the upper support plate fixing screw 4 is lower than the upper support plate 3, and there is a floating gap between the end face of the support plate fixing screw 4 and the upper support plate 3.

[0029] The thickness adjustment pad 11 is a cylindrical sleeve structure with an inner connecting adjustment cylinder, and the cylindrical sleeve structure and the adjustment cylinder are connected by internal and external threads; the middle of the adjustment cylinder is provided with a through hole for the connecting bolt 8.

[0030] The fixed bracket 10 includes a fixed base plate and a rectangular column. The fixed base plate 10-1 is connected to the rectangular column 10-2, and the rectangular column 10-2 is provided with several sliding grooves 10-3.

[0031] like Figure 1 , Figure 2 As shown, the brake caliper 9 under test is mounted to the fixing plate 7 using screw bolts 12. The clamping force points on the brake caliper 9 are in contact with the lower support plate 1 and the upper support plate 3, respectively. The control module controls the clamping and releasing actions of the brake caliper 9. Multiple force sensors in the sensor mounting base 2 transmit the detected pressure to the control module through signal transmission lines. The control module calculates and judges the working status of the brake caliper 9 under test.

[0032] A floating gap is provided between the end face of the bearing plate fixing screw 4 and the upper bearing plate 3. This gap can be adjusted to simulate different relative positions between the brake disc and the brake caliper. This installation method is closer to the actual vehicle installation method, ensuring the accuracy of clamping force measurement.

[0033] Multiple force sensors within the sensor mounting base 2 form an array, ensuring that the force is not lost due to mechanical friction. The maximum range of a single force sensor is 20kN. The array of multiple force sensors, supported by the upper bearing plate 3, disperses the pressure, thus expanding the total range. Simultaneously, through experiments, and considering the force and mechanical losses caused by the direction of the force, the influence factor parameters of each sensor on the total pressure were calibrated.

[0034] The formula for calculating total pressure is F. 力 =a*F1+b*F2+c*F3, where a, b, and c represent the influence factor parameters of the three force sensors in the sensor mounting base 2, and F1, F2, and F3 represent the pressure values ​​detected by the three force sensors in the sensor mounting base 2.

[0035] This device, through algorithm calibration, can also achieve measurement accuracy under multiple temperature conditions. Through experiments, considering the influence of temperature on the sensor, a coefficient matrix of temperature influence factors was calibrated, as shown in Table 1.

[0036] Table 1

[0037] temperature -40℃ 23℃ 85℃ Temperature coefficient T [T1] <![CDATA[T2]]> <![CDATA[T3]]>

[0038] In summary, the formula is as follows: F 总 =f(T) 测 )*(a*F1+b*F2+c*F3), where f is the coefficient of influence factor for different temperatures.

Claims

1. A high-pressure measuring device for measuring and monitoring brake clamping force, comprising an assembly and fixing area and a pressure measuring area, characterized in that: One side of the assembly and fixing area is connected to the pressure measurement area; the assembly and fixing area includes a fixing bracket, a fixing plate, an adjusting plate, and a thickness adjusting pad. The fixing bracket (10) is connected to the fixing plate (7). The adjusting plate (5) is provided on the front side of the fixing plate (7). A thickness adjusting pad (11) is provided between the fixing plate (7) and the adjusting plate (5). A connecting bolt (8) is connected to the front part of the adjusting plate (5), and the bolt (8) passes through the adjusting plate (5), the thickness adjusting pad (11) and is connected to the fixing plate (7) from front to back; the pressure measurement area includes a sensor mounting base, an upper bearing plate, and a lower bearing plate. The side of the adjusting plate (5) is connected to the sensor mounting base (2) through a connecting member. The upper bearing plate (3) and the lower bearing plate (1) are respectively provided on the front and rear sides of the sensor mounting base (2), and the upper bearing plate (3) is connected to the lower bearing plate (1) through an upper bearing plate fixing screw (4) passing through the upper bearing plate (3) and the sensor mounting base (2); the upper bearing plate fixing screw (4) has a T-shaped screw structure. The nut of the upper bearing plate fixing screw (4) is a disc-shaped structure. The screw rod of the upper bearing plate fixing screw (4) is a stepped screw rod, and an external thread is provided at the lower part of the screw rod; the end face of the upper bearing plate fixing screw (4) is lower than the upper bearing plate (3), and a floating gap is provided between the end face of the bearing plate fixing screw (4) and the upper bearing plate (3).

2. The high-pressure measuring device for measuring and monitoring brake clamping force according to claim 1, characterized in that: The sensor mounting base (2) has a "convex" shaped panel structure. The side end of the sensor mounting base (2) is connected to the side of the adjusting plate (5) through a bolt. A plurality of sensor grooves (2-1) are provided on the sensor mounting base (2). A first cable groove (2-2) is provided on one side of the sensor groove (2-1). A sensor is provided in the sensor groove (2-1). The bottom of the sensor is connected to a cable, and the cable is embedded in the first cable groove (2-2).

3. The high-pressure measuring device for measuring and monitoring brake clamping force according to claim 1, characterized in that: The adjusting plate (5) has a rectangular panel structure. A second cable groove (5-1) is provided in the middle of the adjusting plate (5). The lower part of the second cable groove (5-1) is a straight groove structure. The upper part of the second cable groove (5-1) is a three-fork groove structure, and the exit position of the three-fork groove corresponds to the entrance position of the first cable groove (2-2); a kidney-shaped groove (5-2) is provided horizontally at the lower part of the second cable groove (5-1). A wire pressing cover plate (6) is embedded in the kidney-shaped groove (5-2), and the wire pressing cover plate (6) is connected to the adjusting plate (5) through a bolt; kidney-shaped holes (5-3) for connecting the bolt (8) are respectively provided on the left and right sides of the second cable groove (5-1).

4. The high-pressure measuring device for measuring and monitoring brake clamping force according to claim 1, characterized in that: The thickness adjusting pad (11) has a cylindrical sleeve structure with an adjusting cylinder connected inside, and the cylindrical sleeve structure is connected to the adjusting cylinder through internal and external threads; a through hole for connecting the bolt (8) is provided in the middle of the adjusting cylinder.

5. A high-pressure measuring device for measuring and monitoring brake clamping force according to claim 1, characterized in that: The fixing bracket (10) includes a fixing bottom plate and a rectangular column. The fixing bottom plate (10-1) is connected to the rectangular column (10-2). A plurality of sliding grooves (10-3) are provided on the rectangular column (10-2).

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