Drum-disc integrated brake test test bench
By designing an integrated drum/disc brake test bench, the compatibility problem of commercial vehicle braking system testing was solved, enabling accurate simulation and pressure acquisition of drum/disc braking systems, and improving the flexibility and accuracy of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING ARC POINT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-19
AI Technical Summary
Existing hardware-in-the-loop braking test equipment cannot meet the flexible testing needs of various commercial vehicle braking systems, especially the compatibility issues of commercial vehicle drum/disc braking systems.
An integrated drum/disc brake test bench was designed, comprising a support base, drum and disc brake bases, an adapter plate, and sensors. It can simulate the actual braking process, collect pressure values, and realize integrated testing of drum/disc brake systems for commercial vehicles.
It enables compatibility testing of drum/disc braking systems for commercial vehicles, enhancing the flexibility and accuracy of the testing, and is applicable to braking system testing of various commercial vehicles.
Smart Images
Figure CN224382799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive technology, and in particular to an integrated drum and disc brake test bench. Background Technology
[0002] Drive-by-wire chassis replace traditional mechanical connections with electronic signals, enabling precise electronic control of vehicle steering, braking, and driving functions. As drive-by-wire chassis become more widespread, the demand for automated chassis testing equipment is increasing.
[0003] With the increasing popularity of drive-by-wire chassis, commercial vehicles are gradually adopting electromechanical braking systems to replace traditional hydraulic or pneumatic braking systems. However, commercial vehicles vary greatly in size and type, with significant differences in the number of axles and brake types (disc / drum). Therefore, existing hardware-in-the-loop braking testing equipment cannot meet the testing needs of various commercial vehicle braking systems and is insufficient to meet the requirements of flexible testing. Utility Model Content
[0004] The purpose of this invention is to provide an integrated drum / disc brake test bench that is compatible with the integrated testing of commercial vehicle drum / disc brake systems.
[0005] To achieve the above objectives, this utility model provides an integrated drum and disc brake test bench, including a support base, on which a drum brake base, a drum ball joint base, a drum motor base and a disc brake base are detachably mounted.
[0006] The drum brake base is equipped with a drum brake adapter plate and an external support for the drum brake shoe. A wheel hub specimen is installed on the drum brake adapter plate. One end of the internal support for the drum brake shoe passes through the middle through hole of the drum brake adapter plate, and the other end is fixed to the external support for the drum brake shoe with bolts.
[0007] The drum ball joint bracket is mounted on the drum ball joint base, the drum brake ball joint passes through the camshaft and is fixed to the drum ball joint bracket by bolts, and the drum brake swing arm is mounted on the outside of the camshaft by splines;
[0008] The drum motor bracket is mounted on the drum motor base, and the drum motor is fixed to the drum motor bracket by bolts;
[0009] The disc brake bracket is mounted on the disc brake base, and the disc brake is fixed on the disc brake base via a disc brake adapter plate.
[0010] The drum brake shoe is fixed to the internal bracket of the drum brake shoe by bolts and is suspended inside the wheel hub.
[0011] The drum motor push rod connects the drum motor and the drum brake swing arm, and a tension / compression sensor is installed on the drum motor push rod.
[0012] The disc brake bracket has an arc shape that matches the actual brake disc, and a through hole is provided in the middle of the arc plate for placing a tension / compression sensor.
[0013] The brake pads of the disc brake span across the left and right sides of the arc-shaped plate of the disc brake bracket.
[0014] This utility model discloses an integrated drum / disc brake test bench. First, the corresponding components are installed. When testing a drum brake system, the drum motor extends, pushing a drum motor push rod. The push rod pushes a swing arm, which drives the camshaft to rotate via a spline. The cam pushes the brake shoes open, contacting the inner side of the wheel hub, simulating the actual drum brake braking process. Simultaneously, a sensor on the push rod collects the pressure value during the test. When testing a disc brake system, the disc brake motor pushes the brake pads to move, clamping the brake pads on both sides, simulating the actual disc brake braking process. During clamping, the disc brake pads contact and press against a sensor on the disc brake bracket, and the sensor collects the pressure value during the test. This allows for integrated testing of both drum and disc brake systems compatible with commercial vehicles. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0016] Figure 1 This is a schematic diagram of the overall structure of the integrated drum and disc braking test bench of this utility model.
[0017] Figure 2 This is a schematic diagram of the assembly structure of the drum brake test bench of this utility model during drum brake testing.
[0018] Figure 3 This is a schematic diagram of the assembly structure for multi-axis testing of this utility model.
[0019] In the diagram: 1-Support base, 2-Drum brake base, 3-Drum brake adapter plate, 4-Drum brake shoe internal bracket, 5-Drum brake shoe external bracket, 6-Drum ball joint base, 7-Drum ball joint bracket, 8-Drum motor base, 9-Drum motor bracket, 10-Disc brake base, 11-Disc brake adapter plate, 12-Disc brake bracket. Detailed Implementation
[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0021] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of the integrated drum and disc brake test bench. Figure 2 This is a schematic diagram of the assembly structure of an integrated drum / disc brake test bench for drum brake testing. This utility model provides an integrated drum / disc brake test bench, including a support base 1, a drum brake base 2, a drum ball joint base 6, a drum motor base 8, a drum brake adapter plate 3, an external drum brake shoe bracket 5, an internal drum brake shoe bracket 4, a drum ball joint bracket 7, a drum motor bracket 9, a disc brake bracket 12, a disc brake adapter plate 11, and a disc brake base 10. The aforementioned solution enables integrated testing of commercial vehicle drum / disc brake systems. It is understood that the aforementioned solution is compatible with integrated testing of commercial vehicle drum / disc brake systems.
[0022] In this embodiment, the frame of the support base 1 is welded from rectangular materials, and a steel plate is welded on top for support. All electrical components mentioned herein are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a PLC for control purposes, and existing publicly available power connection technologies are not described in detail here.
[0023] The support base 1 is equipped with a drum brake base 2, a drum ball joint base 6, a drum motor base 8, and a disc brake base 10. The drum brake base 2, the drum ball joint base 6, the drum motor base 8, and the disc brake base 10 are all fixed to the support base 1 by bolts.
[0024] The drum brake base 2 is equipped with a drum brake adapter plate 3 and a drum brake shoe external bracket 5. A wheel hub specimen is mounted on the drum brake adapter plate 3. One end of the drum brake shoe internal bracket 4 passes through the central through-hole of the drum brake adapter plate 3, and the other end is bolted to the drum brake shoe external bracket 5. The drum brake adapter plate 3 is bolted to the drum brake base 2 through holes on both sides, and the drum brake shoe external bracket 5 is bolted to the drum brake base 2. The wheel hub specimen is bolted to the drum brake adapter plate 3.
[0025] The drum ball joint bracket 7 is mounted on the drum ball joint base 6. The drum brake ball joint passes through the camshaft and is fixed to the drum ball joint bracket 7 by bolts. The drum brake swing arm is mounted on the outside of the camshaft by splines. The drum ball joint bracket 7 is mounted on the drum ball joint base 6 by bolts, which facilitates installation and disassembly.
[0026] The drum motor bracket 9 is mounted on the drum motor base 8, and the drum motor is fixed to the drum motor bracket 9 by bolts; the drum motor bracket 9 is mounted on the drum motor base 8 by bolts, which facilitates installation and disassembly.
[0027] The disc brake bracket 12 is mounted on the disc brake base 10, and the disc brake is fixed to the disc brake base 10 via the disc brake adapter plate 11. The disc brake bracket 12 is mounted on the disc brake base 10 with bolts, facilitating installation and removal.
[0028] Secondly, the drum brake shoe is fixed to the internal bracket 4 of the drum brake shoe by bolts and is suspended inside the wheel hub.
[0029] Then, the drum motor push rod connects the drum motor and the drum brake swing arm, and a tension / compression sensor is installed on the drum motor push rod. The tension / compression sensor is used to collect pressure values during the test. The working principle of the tension / compression sensor is based on the strain effect. The deformation of the elastic element causes a change in the resistance of the strain gauge, which is converted into an electrical signal output using a Wheatstone bridge. Its core structure includes an elastic body, a strain gauge, and a measuring circuit, which can accurately measure tension and compression. As is well known to those skilled in the art, the working principle and wiring method of the tension / compression sensor are commonplace and belong to conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can select any configuration according to their needs or convenience.
[0030] Furthermore, the disc brake bracket 12 has an arc shape consistent with the actual brake disc, and a through hole is provided in the middle of the arc plate for placing a tension / compression sensor. The tension / compression sensor is used to collect pressure values during the test.
[0031] Finally, the brake pads of the disc brake span across the left and right sides of the arc-shaped plate of the disc brake bracket 12.
[0032] When using this invention to achieve integrated testing of commercial vehicle drum / disc braking systems, firstly, before testing, the drum and disc brakes are installed in their respective test positions on the test bench according to the testing requirements. Then, the power supply to the corresponding components is turned on. When testing the drum braking system, the drum motor extends and pushes the drum motor push rod, which in turn pushes the swing arm. The swing arm drives the camshaft to rotate via a spline, causing the cam to push the brake shoes open and contact the inner side of the wheel hub, simulating the actual drum brake braking process. Simultaneously, the tension / compression sensor on the push rod collects the pressure value during the test. When testing the disc brake system, the disc brake motor pushes the brake pads to move, clamping the brake pads on both sides, simulating the actual disc brake braking process. During clamping, the disc brake pads contact and are pressed against the tension / compression sensor on the disc brake bracket 12. The sensor collects the pressure value during the test, thus enabling integrated testing of commercial vehicle drum / disc braking systems.
[0033] Finally, as Figure 3 As shown, Figure 3 This is a schematic diagram of the assembly structure for multi-axis testing according to the present invention. The test bench of this application can also be assembled to form a multi-axis testing platform. By assembling multiple test benches to form a multi-axis testing platform, the practicality of the test bench is greatly enhanced.
[0034] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A drum-disc integrated braking test bench, comprising a support base, characterized in that: The support base is equipped with a drum brake base, a drum ball joint base, a drum motor base, and a disc brake base. The drum brake base is equipped with a drum brake adapter plate and an external support for the drum brake shoe. A wheel hub specimen is installed on the drum brake adapter plate. One end of the internal support for the drum brake shoe passes through the middle through hole of the drum brake adapter plate, and the other end is fixed to the external support for the drum brake shoe with bolts. The drum ball joint bracket is mounted on the drum ball joint base, the drum brake ball joint passes through the camshaft and is fixed to the drum ball joint bracket by bolts, and the drum brake swing arm is mounted on the outside of the camshaft by splines; The drum motor bracket is mounted on the drum motor base, and the drum motor is fixed to the drum motor bracket by bolts; The disc brake bracket is mounted on the disc brake base, and the disc brake is fixed on the disc brake base via a disc brake adapter plate.
2. The integrated drum and disc brake test bench as described in claim 1, characterized in that: The drum brake shoe is fixed to the internal bracket of the drum brake shoe by bolts and is suspended inside the wheel hub.
3. The integrated drum and disc brake test bench as described in claim 1, characterized in that: The drum motor push rod connects the drum motor and the drum brake swing arm, and a tension / compression sensor is installed on the drum motor push rod.
4. The integrated drum and disc brake test bench as described in claim 3, characterized in that: The disc brake bracket has an arc shape that matches the actual brake disc, and a through hole is provided in the middle of the arc plate for placing a tension / compression sensor.
5. The integrated drum and disc brake test bench as described in claim 1, characterized in that... : The brake pads of the disc brake span across the left and right sides of the arc-shaped plate of the disc brake bracket.