Automobile plate spring radian detection structure

Abstract

The utility model provides an automobile plate spring radian detection structure which comprises a detection base, a chord length positioning plate, a chord height positioning plate and chord height auxiliary scales are fixedly installed on the detection base, and sliding grooves are formed in the inner side surfaces of the chord length positioning plate and the chord height positioning plate. A center fixed point head and a chord length fixed point plate are slidably mounted on the chord length positioning plate through a sliding groove, and chord length scales are arranged on the upper surface of the chord length positioning plate; the chord height positioning plate is slidably provided with a chord height fixing plate through a sliding groove, and the upper surface of the chord height positioning plate is provided with chord height scales. According to the utility model, the chord length fixed-point plate sliding on the chord length positioning plate abuts against the end part of the plate spring to measure the chord length, spring eye fixation is not needed, spring eye-free plate spring detection is expanded, and the versatility is improved; the chord length and chord height point fixing plates independently slide along the sliding grooves, operation is convenient, and continuous force application is avoided; scales and auxiliary scales are calibrated to ensure accurate measurement; and the L-shaped layout is compact.

Description

TECHNICAL FIELD

[0001] The utility model belongs to leaf spring detection technical field, especially related to a kind of automobile leaf spring camber detection structure. BACKGROUND

[0002] Steel plate spring (referred to as leaf spring) as the core elastic element in automobile suspension system, mainly used to transmit the force and torque between wheel and frame, and through its elastic deformation absorption impact energy, it has key influence on the smoothness of vehicle running, control stability and component life. In the practical application of leaf spring, its camber height (camber) is two important characteristic parameters: camber height deviation will cause leaf spring and suspension installation site matching badly, affect assembly accuracy. Therefore, the accurate detection of leaf spring camber is the key link to ensure its performance and reliability.

[0003] In prior art, the detection means for leaf spring camber mainly relies on special detection platform. For example, the Chinese utility model patent document with the announcement number CN221173241U discloses a kind of steel plate spring camber detection platform assembly, it is positioned to leaf spring by the way of limiting ear, and detects camber by measurement assembly. However, such detection structure has significant limitations: on the one hand, detection process needs operating personnel to continuously exert force on leaf spring to offset its rebound tendency, not only time-consuming and laborious operation, but also prone to detection error due to uneven human force; on the other hand, the structure can only detect leaf spring with ear, for leaf spring without ear or damaged ear (such as part of special vehicle or modified leaf spring), effective positioning cannot be realized through ear restriction, resulting in limited detection range.

[0004] Therefore, it is very necessary to invent a kind of automobile leaf spring camber detection structure. UTILITY MODEL CONTENT

[0005] In order to solve the above technical problems, the utility model provides a kind of automobile leaf spring camber detection structure, including detection base, chord length positioning plate, chord height positioning plate, sliding slot, center fixed point head, chord length fixed point plate, chord length scale, chord height fixed point plate, chord height scale and chord height auxiliary scale, chord length positioning plate, chord height positioning plate and chord height auxiliary scale are respectively fixedly installed on the detection base, the inner side surface of chord length positioning plate and chord height positioning plate is all provided with sliding slot, and center fixed point head and chord length fixed point plate are slidably installed in chord length positioning plate by sliding slot, wherein the upper surface of chord length positioning plate is provided with chord length scale;Chord height fixed point plate is slidably installed in chord height positioning plate by sliding slot, and chord height scale is arranged on the upper surface of chord height positioning plate.

[0006] Preferably, the chord length positioning plate and chord height positioning plate are respectively installed at the side of the detection base, and the chord length positioning plate and chord height positioning plate are perpendicular to each other and are in "L" shape.

[0007] Preferably, the plurality of the string height auxiliary scales arranged on the upper surface of the detection base are located between the string length positioning plate and the string height positioning plate, the string height auxiliary scales are arranged along the axis of the string length positioning plate and parallel to the string height positioning plate.

[0008] Preferably, the center positioning head slidingly mounted on the string length positioning plate is used for indicating one of the string height auxiliary scales, and the inner side of the string length positioning plate slidingly mounted on the sliding groove is provided with the center positioning head, and the inner side surface of the string length positioning plate allows abutting with one end of the leaf spring.

[0009] Preferably, the inner side surface of the string height positioning plate slidingly mounted on the sliding groove allows abutting with the outer side surface of the leaf spring, and the string height positioning plate allows longitudinal movement along the axis of the string height positioning plate.

[0010] Preferably, the string length positioning plate allows transverse movement along the axis of the string length positioning plate, the movement direction paths of the string length positioning plate and the string height positioning plate are in perpendicular intersecting relationship and do not interfere with each other.

[0011] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0012] The utility model discloses the string length positioning plate slidingly mounted on the string length positioning plate, and the string length measurement can be realized by the abutting positioning of the end of the leaf spring directly, does not need to rely on the fixing of the ear, avoids the detection invalidation problem caused by the damage or loss of the ear, expands the detection ability to the leaf spring without the ear, and the universality of the detection structure is improved obviously.

[0013] The string length positioning plate and the string height positioning plate independently slide along the transverse direction and the longitudinal direction respectively through the sliding groove, the movement paths are in perpendicular intersecting relationship and do not interfere with each other, positioning can be completed by sliding adjustment to contact the leaf spring during detection, the operator does not need to continuously apply force to offset the springback of the leaf spring, the operation process is simplified, the labor intensity is reduced, and the detection efficiency is improved.

[0014] The string length positioning plate and the string height positioning plate are respectively provided with the string length scale and the string height scale, and the axis arrangement of the string length auxiliary scale can directly read the numerical value of the string length and the string height.

[0015] The string length positioning plate and the string height positioning plate are vertically arranged on the side edge of the detection base in the "L" type, the string height auxiliary scale is arranged between the two and parallel to the string height positioning plate, the overall layout is compact and reasonable, the space occupation of the detection equipment is reduced, and the actual use demand of the workshop or the maintenance scene is more adapted. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the present invention for placing a leaf spring.

[0018] In the picture:

[0019] Detection base 1, chord length positioning plate 2, chord height positioning plate 3, slide groove 4, center fixing head 5, chord length fixing plate 6, chord length scale 7, chord height fixing plate 8, chord height scale 9, chord height auxiliary scale 10. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0022] As attached Figure 1 To be continued Figure 2 As shown:

[0023] This utility model provides a detection structure for the curvature of automotive leaf springs, including a detection base 1, a chord length positioning plate 2, a chord height positioning plate 3, a slide groove 4, a center fixing head 5, a chord length fixing plate 6, a chord length scale 7, a chord height fixing plate 8, a chord height scale 9, and a chord height auxiliary scale 10. The chord length positioning plate 2, the chord height positioning plate 3, and the chord height auxiliary scale 10 are fixedly installed on the detection base 1. The inner surfaces of the chord length positioning plate 2 and the chord height positioning plate 3 are provided with slide grooves 4. The center fixing head 5 and the chord length fixing plate 6 are slidably installed on the chord length positioning plate 2 through the slide grooves 4. The chord length scale 7 is provided on the upper surface of the chord length positioning plate 2. The chord height fixing plate 8 is slidably installed on the chord height positioning plate 3 through the slide grooves 4. The chord height scale 9 is provided on the upper surface of the chord height positioning plate 3.

[0024] Furthermore, both the chord length positioning plate 2 and the chord height positioning plate 3 are made of metal materials such as aluminum alloy or stainless steel, and are installed on adjacent sides of the detection base 1 by bolting or welding. They are set in a mutually perpendicular orientation, forming an "L"-shaped layout: the chord length positioning plate 2 extends along the length direction of the detection base 1, and the chord height positioning plate 3 extends along the width direction of the detection base 1. Its vertical edge is tightly fitted with the side edge of the chord length positioning plate 2, ensuring that their axes are orthogonal within the plane of the detection base 1, providing a basis for subsequent cross-measurement of the chord length and chord height.

[0025] Furthermore, the upper surface of the detection base 1 is laser-etched with multiple chord height auxiliary scales 10. These scales are located in the area between the chord length positioning plate 2 and the chord height positioning plate 3, and are equidistantly arranged along the axial direction of the chord length positioning plate 2 (i.e., the length direction of the detection base 1). The scale lines are parallel to the axial direction of the chord height positioning plate 3 (i.e., the width direction of the detection base 1). The minimum graduation of the chord height auxiliary scales 10 is 1 mm, the scale line length is 5 mm, and the depth is 0.1 mm. The surface is blackened to improve readability.

[0026] Furthermore, a transverse T-shaped groove 4 is formed on the inner surface of the chord length positioning plate 2. Two sliders (not shown in the figure) are installed in the groove 4. One slider is fixedly connected to the center positioning head 5, and the other slider is fixedly connected to the chord length positioning plate 6. The center positioning head 5 is a cone made of hard plastic, with its tip pointing downwards and facing the upper surface of the detection base 1. It is used to indicate the specific value of the chord height auxiliary scale 10. The chord length positioning plate 6 is a rectangular metal plate with a thickness of 5mm. Its inner surface is polished to form a smooth contact surface, which can make close contact with the end plane or arc surface of the leaf spring. Its position can be adjusted by sliding the slider laterally left and right along the groove 4. The outer surface of the chord length positioning plate 6 is aligned with the chord length scale 7 of the chord length positioning plate 2 for directly reading the chord length dimension of the leaf spring. The graduation value of the chord length scale 7 is 1mm.

[0027] Furthermore, a T-shaped groove 4 is formed on the inner surface of the chord height positioning plate 3. A slider (not shown in the figure) is installed in the groove 4 and is fixedly connected to the chord height positioning plate 8. The chord height positioning plate 8 is an L-shaped metal plate with a thickness of 5mm. Its inner side is polished to form a smooth contact surface, which can make close contact with the outer arc surface of the leaf spring. The chord height positioning plate 8 is allowed to slide longitudinally back and forth along the axial direction of the chord height positioning plate 3, that is, in the vertical direction. Its outer surface is aligned with the chord height scale 9 of the chord height positioning plate 3 for directly reading the chord height dimension of the leaf spring. The graduation value of the chord height scale 9 is 1mm.

[0028] Furthermore, the movement path of the chord length positioning plate 6 is along the transverse straight line X-axis direction of the slide groove 4 of the chord length positioning plate 2, and the movement path of the chord height positioning plate 8 is along the longitudinal straight line Y-axis direction of the slide groove 4 of the chord height positioning plate 3. The two paths intersect perpendicularly in the plane of the detection base 1 at the "L"-shaped corner of the chord length positioning plate 2 and the chord height positioning plate 3. Since the slide grooves 4 of the chord length positioning plate 2 and the chord height positioning plate 3 are respectively arranged on their inner surfaces and do not overlap, and the sliders only move within their respective slide grooves 4, the sliding processes of the chord length positioning plate 6 and the chord height positioning plate 8 do not interfere with each other, and their positions can be independently adjusted to adapt to the detection requirements of leaf springs of different sizes.

[0029] The working principle is as follows: First, place the leaf spring to be tested flat on the testing base 1, with one end of the leaf spring facing the chord length positioning plate 2 and the outer arc surface facing the chord height positioning plate 3.

[0030] Next, slide the chord length positioning plate 6 along the transverse T-shaped groove 4 of the chord length positioning plate 2 until its inner polished contact surface is in close contact with the end plane (or arc surface) of the leaf spring. At this time, the outer surface of the chord length positioning plate 6 is aligned with the chord length scale 7 of the chord length positioning plate 2, and the chord length value L is read directly. At the same time, the center positioning head 5, which shares the groove 4 with the chord length positioning plate 6, slides synchronously with the slider. Its hard plastic cone tip will point to the chord height auxiliary scale 10 on the detection base 1. By observing the scale value aligned with the tip, the center point of the chord length can be calibrated, and the chord height auxiliary scale 10 located at the chord height position can be determined. The value read by the chord height auxiliary scale 10 is compared with the chord height length measured by the subsequent chord height scale 9 to ensure the accuracy of the value.

[0031] Subsequently, the chord height positioning plate 8 is slid along the longitudinal T-shaped groove 4 of the chord height positioning plate 3, so that its inner polished contact surface is in close contact with the highest point (or designated measurement point) of the outer arc surface of the leaf spring; at this time, the outer surface of the chord height positioning plate 8 is aligned with the chord height scale 9 of the chord height positioning plate 3, and the chord height value H is read directly. Since the movement paths of the chord length positioning plate 6 and the chord height positioning plate 8 are perpendicular and do not interfere with each other, their positions can be adjusted independently to adapt to leaf springs of different sizes.

[0032] Finally, by measuring the chord length L and chord height H, the radius R of the leaf spring is calculated using the radian calculation formula, and then the radian value of the central angle is obtained, thus completing the accurate detection of the leaf spring's radian.

[0033] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A structure for detecting the curvature of automotive leaf springs, characterized in that, The utility model provides a kind of string length and height detection device, including detection base (1), string length positioning plate (2), string height positioning plate (3), sliding slot (4), center fixed point head (5), string length fixed point plate (6), string length scale (7), string height fixed point plate (8), string height scale (9) and string height auxiliary scale (10), the string length positioning plate (2) and string height positioning plate (3) are respectively fixedly installed with string height auxiliary scale (10) on the detection base (1) described above, the inner side surface of string length positioning plate (2) and string height positioning plate (3) is all set with sliding slot (4), and center fixed point head (5) and string length fixed point plate (6) are slidably installed in string length positioning plate (2) by sliding slot (4), wherein the upper surface of string length positioning plate (2) is provided with string length scale (7);String height fixed point plate (8) is slidably installed in string height positioning plate (3) by sliding slot (4), and string height scale (9) is provided on the upper surface of string height positioning plate (3).

2. The structure for detecting the camber of an automobile leaf spring according to claim 1, wherein: The string length positioning plate (2) and string height positioning plate (3) are respectively installed at the side of the detection base (1), and the string length positioning plate (2) and string height positioning plate (3) are perpendicular to each other and are in the shape of "L".

3. The structure for detecting the camber of an automobile leaf spring according to claim 2, wherein: The plurality of string height auxiliary scales (10) provided on the upper surface of the detection base (1) are located between the string length positioning plate (2) and the string height positioning plate (3), the string height auxiliary scales (10) are arranged along the axis of the string length positioning plate (2), and are parallel to the string height positioning plate (3).

4. The structure for detecting the camber of an automobile leaf spring according to claim 3, wherein: The center fixed point head (5) slidably installed on the string length positioning plate (2) by the sliding slot (4) is used to indicate one of the string height auxiliary scales (10), and the string length fixed point plate (6) slidably installed on the string length positioning plate (2) by the sliding slot (4) is provided with the center fixed point head (5) on the inner side, and the inner side surface of the string length fixed point plate (6) allows to abut against one end of a leaf spring.

5. The camber detection structure for a vehicle leaf spring according to claim 4, wherein: The inner side surface of the string height fixed point plate (8) slidably installed on the string height positioning plate (3) by the sliding slot (4) allows to abut against the outer side surface of a leaf spring, and the string height fixed point plate (8) allows to move longitudinally along the axis of the string height positioning plate (3).

6. The structure for detecting the camber of an automobile leaf spring according to claim 5, wherein: The string length fixed point plate (6) allows to move transversely along the axis of the string length positioning plate (2), and the moving direction of the string length fixed point plate (6) and the string height fixed point plate (8) is perpendicular to each other and does not interfere with each other.

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