Worm and gear type parking braking performance tester calibration device

Abstract

The utility model relates to the technical field of vehicle testing, in particular to a worm and gear type calibration device for a parking braking performance tester. A driving shell is installed at one end of the shell assembly, a worm and gear assembly is installed in the driving shell, one end of a worm of the worm and gear assembly is connected with a rotating wheel, a driving lead screw is arranged in the shell assembly, one end of the driving lead screw penetrates through the driving shell, and internal threads are formed in a worm gear in the worm and gear assembly. The screw rod is in transmission connection with the driving screw rod through threads; a reinforcement lever is rotatably mounted at the other end of the shell assembly, the bottom end of the reinforcement lever is connected with a driving connector through a rotating shaft, the driving connector is connected to the driving screw rod, the top end of the reinforcement lever is connected with a mounting rod assembly through a movable rotating shaft, and a standard sensor and a to-be-tested sensor are mounted in the mounting rod assembly in series; the device is combined with a driving mode of a worm gear, a worm, a lever and a thread to decelerate and increase force, so that enough torque applied to the sensor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle testing, in particular to a worm gear type parking brake performance tester calibration device. Background Art

[0002] The parking brake system is a crucial component that directly determines vehicle safety. With the continuous advancement of automotive technology, especially with the popularity of electric and hybrid vehicles, the design and performance testing of parking brake systems have become increasingly complex. The parking brake performance tester is used to accurately evaluate and verify the effectiveness of the parking brake system, ensuring vehicle safety under various operating conditions.

[0003] However, in actual use, parking brake performance testers can be affected by a variety of factors, such as ambient temperature, humidity, test load, and test method, all of which can lead to deviations in test results. To improve test accuracy, the tester must be regularly calibrated. While some parking brake performance tester calibration equipment is currently available on the market, most existing calibration equipment is bulky, difficult to transport, and complex. It also requires certain supporting equipment for use, resulting in high costs. Utility Model Content

[0004] The purpose of the utility model is to provide a rationally designed worm gear type parking brake performance tester calibration device to address the defects and shortcomings of the existing technology, which can solve the above-mentioned defects.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: it includes a shell assembly, a driving shell is installed at one end of the shell assembly, a worm gear assembly is installed in the driving shell, one end of the worm of the worm gear assembly is connected to a rotating wheel, a driving screw is provided in the shell assembly, one end of the driving screw is passed through the driving shell, an internal thread is opened in the worm wheel in the worm gear assembly, and is connected to the driving screw through the thread; a booster lever is rotatably installed at the other end of the shell assembly, the bottom end of the booster lever is connected to the driving connector through a rotating shaft, one end of the driving screw is connected to the driving connector through a thread, and the top of the booster lever is connected to the mounting rod assembly through a movable rotating shaft, a standard sensor and a sensor to be tested are installed in series in the mounting rod assembly, a transversely arranged positioning rod is connected to the front end of the mounting rod assembly, and positioning grooves are respectively opened on the two side shells of the shell assembly, and the positioning rods are respectively clamped in the positioning grooves.

[0006] Preferably, the booster lever is an "L"-shaped lever, which is rotatably connected to the housing assembly via a rotating shaft. The booster lever is an asymmetric lever, and the end connected to the drive connector is a long arm, and the end connected to the mounting rod assembly is a short arm.

[0007] Preferably, the mounting rod assembly includes a connector 1 rotatably connected to the boosting lever through a movable rotating shaft, the front end of the connector 1 is connected to a standard sensor, the front end of the standard sensor is connected to a connecting rod, the front end of the connecting rod is connected to a sensor to be tested, the front end of the sensor to be tested is connected to a connector 2, and the positioning rod is arranged in the head of the front end of the connector 2.

[0008] Preferably, the ends of the second connector, the connecting rod and the first connector connected to the standard sensor and the sensor to be tested are all threaded, and both ends of the standard sensor and the sensor to be tested are installed through threads.

[0009] Preferably, a wrench connector for quickly connecting a wrench is installed on the end of the worm in the worm gear assembly opposite to the rotating wheel.

[0010] Preferably, the standard sensor and the sensor to be tested are installed on the same axis.

[0011] After adopting the above structure, the beneficial effects of the utility model are:

[0012] 1. This device combines the drive methods of worm gear, lever and thread, and increases force by deceleration, thereby ensuring that the torque applied to the sensor is sufficient while requiring less manpower.

[0013] 2. This device is equipped with a wrench connector, which can be twisted with a wrench to prevent the wheel's lever arm from being too small, resulting in insufficient manpower to achieve high pulling force at the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a right side view of the utility model;

[0015] Figure 2 It is a left side view of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model when the mounting rod assembly is lifted;

[0018] Figure 5 This is a top view of the utility model when the wrench is installed;

[0019] Figure 6 It is a structural schematic diagram of the utility model when the wrench is installed.

[0020] Description of reference numerals:

[0021] 1. Housing assembly; 2. Drive housing; 3. Worm gear assembly; 4. Wrench connector; 5. Rotating wheel; 6. Drive screw; 7. Drive connector; 8. Power lever; 9. Rotating shaft; 10. Movable rotating shaft; 11. Connector 1; 12. Standard sensor; 13. Connecting rod; 14. Sensor to be tested; 15. Connector 2; 16. Positioning rod; 17. Positioning slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See Figures 1-6 As shown, it includes a shell assembly 1, a drive shell 2 is installed at one end of the shell assembly 1, a worm gear assembly 3 is installed in the drive shell 2, one end of the worm of the worm gear assembly 3 is connected to a rotating wheel 5, a drive screw 6 is provided in the shell assembly 1, one end of the drive screw 6 is arranged through the drive shell 2, and the worm wheel in the worm gear assembly 3 is provided with an internal thread, and is connected to the drive screw 6 through the thread; a booster lever 8 is rotatably installed at the other end of the shell assembly 1, the bottom end of the booster lever 8 is connected to the drive connector 7 through a rotating shaft, one end of the drive screw 6 is connected to the drive connector 7 through a thread, and the top of the booster lever 8 is connected to the mounting rod assembly through a movable rotating shaft, a standard sensor 12 and a sensor to be tested 14 are installed in series in the mounting rod assembly, a transversely arranged positioning rod 16 is connected to the front end of the mounting rod assembly, and positioning grooves 17 are respectively provided on the two side shells of the shell assembly 1, and the positioning rods 16 are respectively clamped in the positioning grooves 17;

[0024] The booster lever 8 is an L-shaped lever, which is rotatably connected to the housing assembly 1 via a rotating shaft 9. The booster lever 8 is an asymmetric lever, and the end connected to the drive connector 7 is a long arm, and the end connected to the mounting rod assembly is a short arm;

[0025] The mounting rod assembly includes a connector 11 rotatably connected to the booster lever 8 via a movable rotating shaft 10, a standard sensor 12 being connected to the front end of the connector 11, a connecting rod 13 being connected to the front end of the sensor to be tested 14, a connector 2 15 being connected to the front end of the sensor to be tested 14, and a positioning rod 16 being provided in the head of the front end of the connector 2 15; the standard sensor 12 and the sensor to be tested 14 are both on the same axis after installation;

[0026] The ends of the connector 2 15, the connecting rod 13 and the connector 1 11 connected to the standard sensor 12 and the sensor to be tested 14 are all threaded, and both ends of the standard sensor 12 and the sensor to be tested 14 are installed through threads;

[0027] A wrench connector 4 for quickly connecting a wrench is installed on the end of the worm in the worm gear assembly 3 opposite to the rotating wheel 5.

[0028] The principle and use process of this utility model:

[0029] During calibration, first lift the mounting rod assembly upwards and support it under the connecting rod 13 or the movable shaft 10 with a support to prevent it from falling. Then install the sensor 14 to be tested and install the second connector 15. Then remove the support and lower the mounting rod assembly so that the positioning rod 16 enters the positioning groove 17 for horizontal limit. Connect the standard sensor 12 and the sensor 14 to be tested respectively, and then rotate the wheel 5. The speed is proportionally reduced and the torque is increased through the worm gear assembly 3. Then the worm gear drives the driving screw 6 to move through the internal thread to further decelerate. While moving, the driving screw 6 pulls the driving connector 7, so that the lower end of the boosting lever 8 is pulled forward. The boosting lever 8 rotates around the rotating shaft 9, and the upper end begins to pull obliquely upward. Due to the different force arms, the pulling force transmitted to the movable shaft 10 is amplified again, and then the pulling force is applied to the sensor 14 to be tested and the standard sensor 12. At this time, the readings of the two sensors are compared, and it is determined whether the sensor 14 to be tested meets the requirements according to the calibration requirements.

[0030] In the case where a greater force needs to be applied to the sensor and it is difficult to rotate the wheel 5, an extended wrench can be used, connected to the wrench connector 4, and then the wrench can be rotated to ensure that sufficient force is applied to the sensor.

[0031] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents of such scope and metes and bounds.

Claims

1. A worm gear type parking brake performance tester calibration device, comprising a housing assembly (1), characterized in that: A driving housing (2) is installed at one end of the housing assembly (1), a worm gear assembly (3) is installed in the driving housing (2), one end of the worm of the worm gear assembly (3) is connected to a rotating wheel (5), a driving screw (6) is provided in the housing assembly (1), one end of the driving screw (6) passes through the driving housing (2), an internal thread is provided in the worm wheel in the worm gear assembly (3), and the worm wheel is connected to the driving screw (6) through the thread; a boosting lever (8) is rotatably installed at the other end of the housing assembly (1), and the boosting lever (8) is connected to the driving screw (6) through the thread. ) is connected to a driving connector (7) via a rotating shaft, one end of the driving screw rod (6) is connected to the driving connector (7) via a threaded connection, the top end of the boosting lever (8) is connected to a mounting rod assembly via a movable rotating shaft, a standard sensor (12) and a sensor to be tested (14) are installed in series in the mounting rod assembly, a transversely arranged positioning rod (16) is connected to the front end of the mounting rod assembly, positioning grooves (17) are respectively opened on the two side shells of the housing assembly (1), and the positioning rods (16) are respectively clamped in the positioning grooves (17).

2. The worm gear parking brake performance tester calibration device according to claim 1, characterized in that: The booster lever (8) is an L-shaped lever. The booster lever (8) is rotatably connected to the housing assembly (1) via a rotating shaft (9). The booster lever (8) is an asymmetric lever, and the end connected to the drive connector (7) is a long arm, and the end connected to the mounting rod assembly is a short arm.

3. The worm gear parking brake performance tester calibration device according to claim 2, characterized in that: The mounting rod assembly includes a connector head (11) rotatably connected to a boosting lever (8) via a movable rotating shaft (10), a standard sensor (12) being connected to a front end of the connector head (11), a sensor to be tested (14) being connected to a connector head (13) at the front end of the connector head (13), and a sensor to be tested (14) being connected to a connector head (15) at the front end of the sensor to be tested (14), wherein the positioning rod (16) is arranged in the head portion at the front end of the connector head (15).

4. The worm gear parking brake performance tester calibration device according to claim 3, characterized in that: The ends of the second connector (15), the connecting rod (13) and the first connector (11) connected to the standard sensor (12) and the sensor to be tested (14) are all threaded, and both ends of the standard sensor (12) and the sensor to be tested (14) are installed through threads.

5. The worm gear parking brake performance tester calibration device according to claim 4, characterized in that: A wrench connector (4) for quickly connecting a wrench is installed on the end of the worm in the worm gear assembly (3) that is opposite to the rotating wheel (5).

6. The worm gear parking brake performance tester calibration device according to claim 5, characterized in that: The standard sensor (12) and the sensor to be tested (14) are both located on the same axis after installation.

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