Special tool for rapidly measuring approach angle and departure angle of vehicle

Abstract

The utility model discloses a special tool for rapidly measuring an approach angle and a departure angle of a vehicle, which comprises a bottom plate, a rotating plate, a laser pen, an angle gauge, a fixed shaft and a guide rod. Wherein the bottom plate is rotationally connected with the rotating plate through a fixing shaft; the angle gauge is fixedly connected with the bottom plate, and the scale center of the angle gauge coincides with the center of the fixed shaft and is used for measuring and reading the approach angle or departure angle of the vehicle; the bottom plate is connected with the guide rod through a locking nut, and the rotating plate is connected with the guide rod through a locking nut; the laser pen is installed on the upper surface of the rotating plate and the light-emitting center of the laser pen and the upper surface of the rotating plate are on the same plane. Compared with the prior art, the tool can quickly measure the approach angle and departure angle of the vehicle by rotating the rotating plate and using the laser pen to prolong the measurement length and range, thereby saving the measurement manpower and time and improving the measurement efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of measuring instruments, specifically a special tool for quickly measuring the approach and departure angles of vehicles. Background Technology

[0002] Currently, methods for measuring vehicle approach and departure angles are cumbersome, require multiple people to work together, and are prone to significant measurement errors. The measurement results are derived by measuring two lengths and calculating using inverse trigonometric functions. First, a rigid measuring tool needs to be rotated around the wheel to find the point with the smallest angle to the ground. Then, the height of this point above the ground and the horizontal distance from the tangent point to the ground are measured. This method requires a relatively long rigid body, multiple people to work together, and accurate location of the intersection point with the ground. The tools are limited, the measurement process is tedious, and the final departure angle is calculated from multiple measurements, resulting in accumulated errors. Utility Model Content

[0003] The purpose of this invention is to provide a special tool for quickly measuring the approach and departure angles of a vehicle, so as to measure the approach and departure angles quickly and accurately.

[0004] The technical solution to achieve the purpose of this utility model is as follows: a special tool for quickly measuring the approach angle and departure angle of a vehicle, including a base plate, a rotating plate, a laser pointer, an angle gauge, a fixed shaft, and a guide rod; wherein the base plate and the rotating plate are rotatably connected through the fixed shaft; the angle gauge is fixedly connected to the base plate and the center of the scale of the angle gauge coincides with the center of the fixed shaft, used to measure and read the approach angle or departure angle of the vehicle; the base plate and the guide rod are connected by a locking nut, and the rotating plate and the guide rod are connected by a locking nut, thereby supporting and fixing the rotating plate after the approach angle or departure angle is measured; the laser pointer is mounted on the upper surface of the rotating plate and ensures that the light emission center of the laser pointer is on the same plane as the upper surface of the rotating plate, used to extend the measurement length.

[0005] Compared with the prior art, the significant advantages of this utility model are:

[0006] (1) The special tool for quickly measuring the approach angle and departure angle of a vehicle disclosed in this utility model, by setting a laser pointer, can extend the measurement length and realize the 180-degree full-plane search of the lowest point of the approach angle and departure angle.

[0007] (2) The special tool for quickly measuring the approach angle and departure angle of a vehicle disclosed in this utility model can be operated by one person instead of multiple people, reducing manpower and improving measurement efficiency.

[0008] (3) The special tool for quickly measuring the approach angle and departure angle of a vehicle disclosed in this utility model has changed from the original multiple measurements and calculations to direct measurement of the angle, thereby improving the measurement accuracy. Attached Figure Description

[0009] Figure 1 A schematic diagram of a special tool for quickly measuring the approach and departure angles of a vehicle, where (a) is the front view and (b) is the top view;

[0010] Figure 2 This is a schematic diagram of the base plate structure;

[0011] Figure 3 This is a schematic diagram of the rotating plate structure;

[0012] Figure 4 This is a schematic diagram of the laser pointer retainer structure, where (a) is the front view and (b) is the top view;

[0013] Figure 5 This is a schematic diagram of the guide rod structure;

[0014] Figure 6 The diagram shows two rotation states of the laser pointer, where (a) is state one and (b) is state two.

[0015] Figure 7 A schematic diagram of the structure of a special tool for quickly measuring the approach and departure angles of a vehicle when retracted, where (a) is the front view and (b) is the top view. Detailed Implementation

[0016] The terminology used in this utility model is for illustrative purposes only and is not intended to limit the scope of the utility model. The following description, in conjunction with the appendix, further clarifies this utility model. Figure 1-7 The following is a detailed description of some embodiments of this utility model.

[0017] Combination Figure 1 (a) and Figure 1 (b) A special tool for quickly measuring the approach angle and departure angle of a vehicle according to this embodiment includes a base plate 1, a rotating plate 2, a laser pointer 3, an angle meter 4, a fixed shaft 5, a guide rod 6, and a locking nut 7.

[0018] The base plate 1 and the rotating plate 2 are rotatably connected via a fixed shaft 5; the angle gauge 4 is welded and fixed to the base plate 1, and the center of the scale of the angle gauge 4 coincides with the rotation center of the base plate 1 and the rotating plate 2, used to measure and read the approach angle or departure angle of the vehicle; the base plate 1 and the guide rod 6 are rotatably connected via a locking nut 7; the guide rod 6 is provided with a sliding groove, and the rotating plate 2 is equipped with a locking nut 7, and the rotating plate 2 and the guide rod 6 are slidably connected via the locking nut 7 and the sliding groove; when measuring the angle, the locking nut 7 slides in the sliding groove, and after the approach angle or departure angle is measured, the locking nut 7 is tightened to achieve relative fixation of the rotating plate 2 and the guide rod 6; the upper surface of the rotating plate 2 is provided with a graduation line perpendicular to the fixed shaft 5, used to determine the initial position, which facilitates the quick determination of the approximate position (position range) of the lowest point. A cylindrical protrusion is provided at the end of the rotating plate 2 and at the end of the graduation line for installing a retaining ring 3-1;

[0019] The retaining ring 3-1 is rotatably mounted on the top of the upper surface of the rotating plate 2. The laser pointer 3 is installed inside the retaining ring 3-1, ensuring that the light-emitting center of the laser pointer 3 is on the same plane as the upper surface of the rotating plate 2 after installation. The laser pointer 3 is used to extend the measuring length of the rotating plate 2. See [link to documentation] for the specific structure of each component. Figures 2-5 .

[0020] The initial installation position of laser pointer 3 is such that the central axis of laser pointer 3 and the engraving line on the upper surface of rotating plate 2 are on the same straight line.

[0021] The adapter plate 2 can rotate from 0 to 180 degrees along a fixed axis, thus satisfying the departure angle measurement of all vehicles. See details. Figure 6 .

[0022] The lowest point of the departure angle and approach angle is not necessarily on the same straight line as the central axis of the initial installation position of the laser pointer 3. Therefore, the laser pointer needs to be rotated to accurately find the rigid point that minimizes the included angle. The laser pointer 3 needs to be rotated in close contact with the rotating plate 2. During the rotation, the light emission center of the laser pointer 3 is always in the same plane as the upper plane of the rotating plate 2. The laser pointer can rotate 180 degrees, which is suitable for various types of vehicles.

[0023] Combination Figure 1 and Figure 7In practical use, the base plate 1 is flush with the ground, and the rotating plate 2 is a rigid plate with a handle 2-1. The rotating plate 2 rotates around a fixed axis via the handle 2-1, keeping the laser pointer 3 in laser-emitting mode. The rotating plate 2 remains tangent to the wheel during rotation. The rotating plate 2 is slowly rotated while the laser pointer 3 is rotated, causing the laser pointer 3 to rotate within the plane of the rotating plate 2. When the laser pointer 3 just hits any part of the vehicle body, the locking nut 7 at point 2 is rotated. At this time, the guide rod 6 supports the rotating plate 2, fixing the relative position and angle of the base plate 1, rotating plate 2, and guide rod 6. The angle is then read from the angle meter 4; this angle is the approach angle or departure angle. For a detailed description of the special tools for quickly measuring the vehicle's approach and departure angles in this embodiment, please refer to the diagrams showing the laser pointer adjustment and angle adjustment. Figure 7 .

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tool for quickly measuring the approach angle and departure angle of a vehicle, characterized in that, Includes base plate, rotating plate, laser pointer, angle gauge, fixed shaft, and guide rod; The base plate and the rotating plate are rotatably connected via a fixed shaft; The angle gauge is fixed to the base plate and the center of the angle gauge's scale coincides with the center of the fixed shaft. It is used to measure and read the approach angle or departure angle of the vehicle. The base plate and guide rod are rotatably connected by a locking nut, and the rotating plate and guide rod are connected by a locking nut, which is used to support and fix the rotating plate after the approach angle or departure angle is measured; The laser pointer is mounted on the upper surface of the rotating plate, ensuring that the center of the laser pointer's light emission is on the same plane as the upper surface of the rotating plate. This extends the measurement length and allows for a comprehensive search for the lowest point.

2. The special tool for quickly measuring the approach and departure angles of a vehicle according to claim 1, characterized in that, A handle is provided on the rotating plate, and the rotating plate rotates around a fixed axis via the handle.

3. The special tool for quickly measuring the approach and departure angles of a vehicle according to claim 1, characterized in that, The rotating plate rotates from 0 degrees to 180 degrees along a fixed axis.

4. The special tool for quickly measuring the approach and departure angles of a vehicle according to claim 1, characterized in that, The laser pointer is mounted on the surface of the rotating plate by a retaining ring, enabling the laser pointer to rotate 180 degrees on the surface of the rotating plate.

5. The special tool for quickly measuring the approach angle and departure angle of a vehicle according to claim 4, characterized in that, The upper surface of the rotating plate is provided with engraved lines perpendicular to the fixed axis, which are used to determine the initial installation position of the laser pointer and facilitate the quick determination of the position range of the lowest point.

6. The special tool for quickly measuring the approach angle and departure angle of a vehicle according to claim 4, characterized in that, A cylindrical protrusion is provided at the end of the rotating plate and at the end of the engraving line for mounting a retaining ring.

Images