High-precision automobile suspension carrying precision measuring device and mounting method

Abstract

The invention relates to the technical field of vehicle installation and measurement, in particular to a high-precision automobile suspension carrying precision measuring device and an installation method. The measuring device comprises a measuring ruler body, and the measuring ruler body is provided with a guide sliding groove and a first dial gauge. A pointing mark is arranged on the measuring ruler body; the rotating rod is rotationally connected with the measuring ruler body, one end of the rotating rod penetrates through the guide sliding groove and extends out of the measuring ruler body, the rotating rod comprises a threaded section, and the thread pitch of the threaded section is in multiple relation with the division value of the first dial gauge; the precise reading disc is arranged on the rotating rod in an interference fit and sleeving manner and can rotate relative to the rotating rod, and the precise reading disc is provided with a second dial gauge in the circumferential direction, and the second dial gauge is used for being matched with the pointing mark to carry out precise reading; the pointing assembly is connected to the rotating rod in a threaded mode, slides in the axial direction of the guiding sliding groove when the rotating rod rotates, and is used for pointing to the first dial gauge. According to the device, the measurement accuracy is amplified through the second dial gauge, and more accurate measurement can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle installation measurement, and in particular to a high-precision automobile suspension mounting accuracy measurement device and an installation method. Background Art

[0002] In the process of automobile research and development, design and production, in order to ensure the position accuracy of the powertrain assembly in the engine compartment, the position change of the powertrain before and after assembly is usually measured to determine the installation position accuracy.

[0003] The automobile suspension support is the main load-bearing component connecting the powertrain and the vehicle body. It is usually composed of three parts: the suspension support housing, the rubber main spring, and the suspension arm. The rubber main spring is located between the suspension arm and the suspension support housing, and plays the role of supporting the weight, alleviating impact, isolating vibration, and limiting displacement of the powertrain. When the whole vehicle is installed, the suspension support housing is rigidly connected to the vehicle body or subframe by bolts, and the suspension arm is rigidly connected to the powertrain by bolts. Before and after the powertrain is connected to the suspension arm, the rubber main spring will produce a certain displacement due to deformation under force. Measuring the change in the displacement of the powertrain during this process is the suspension mounting accuracy measurement.

[0004] In actual engineering applications, ruler measurements are usually used, but their measurement accuracy is low and precise measurement cannot be achieved. Summary of the invention

[0005] The main purpose of the present invention is to solve the problem of low automobile suspension mounting accuracy measurement, and to provide a high-precision automobile suspension mounting accuracy measurement device and an installation method.

[0006] The technical features adopted by the present invention are: a high-precision automobile suspension loading accuracy measurement device, comprising:

[0007] A measuring ruler body, wherein a guide slot is provided on the measuring ruler body, and a first scale is provided along the axial direction of the guide slot; and a directional mark is provided on the measuring ruler body;

[0008] A rotating rod, wherein both ends of the rotating rod are rotatably connected to the measuring ruler body, and one end of the rotating rod passes through the guide slot and extends out of one end of the measuring ruler body, the rotating rod comprises a threaded section located in the guide slot, and the pitch of the threaded section is a multiple of the graduation value of the first scale;

[0009] A precision reading disk, which is sleeved on the rotating rod with an interference fit, and can rotate relative to the rotating rod when an external force is applied. The precision reading disk is provided with a second scale in the circumferential direction, and the second scale is used to cooperate with the pointing mark for accurate reading;

[0010] A pointing component is threadedly connected to the threaded section of the rotating rod and slides axially along the guide slot when the rotating rod rotates, so as to point to the first scale.

[0011] Furthermore, the measuring scale body includes an upper scale body and a lower scale body fixed on the upper scale body; a groove is provided on the upper scale body and / or the lower scale body; the groove forms the guide groove when the upper scale body is fixed to the lower scale body; one end of the groove is connected to a placement groove extending from the end of the measuring scale body; the rotating rod and the measuring scale body are cooperated to provide a limiting structure for axially limiting the rotating rod.

[0012] Furthermore, the lower ruler body is provided with a plurality of pins, and the upper ruler body is provided with a plurality of pin holes corresponding to the pins, and is correspondingly clamped on the pins through the plurality of pin holes.

[0013] Furthermore, the limiting structure includes a limiting rotating member fixed on the rotating rod and a limiting groove provided on the measuring ruler body and connected to one end of the guide slot and coupled to the limiting rotating member; the limiting rotating member abuts against the inner wall of the limiting groove in the axial direction of the rotating rod.

[0014] Furthermore, the grooves are provided on both the upper scale body and the lower scale body; the two grooves are connected to form the guide groove when the upper scale body is fixedly connected to the lower scale body; the limit grooves include an upper limit groove provided on the upper scale body and a lower limit groove provided on the lower scale body; the limit rotating part includes a sphere.

[0015] Furthermore, the groove, placement groove and limit groove are provided at the bottom of the upper scale body; the limit groove is a columnar groove; the rotating rod passes through the groove and extends out of one side of the upper scale body through the placement groove; the lower scale body is fixed on the upper scale body as the bottom cover of the upper scale body.

[0016] Furthermore, a calibration groove is formed on the lower scale body; and the precision reading disk is located in the calibration groove and protrudes from the lower scale body.

[0017] Furthermore, the upper ruler body is provided with a reading window corresponding to the calibration groove; the pointing mark includes a precision reading line provided on the upper ruler body corresponding to the reading window.

[0018] Furthermore, a reading disc cover is provided on the upper ruler body corresponding to the calibration groove, and the reading disc cover is provided with the reading window and the precision reading line.

[0019] Furthermore, the pointing assembly includes a nut slider threadedly connected to the rotating rod and a pointing member fixed on the nut slider, and the pointing member is used to point to the first scale for reading.

[0020] Furthermore, the nut slider is provided with a plurality of clamping protrusions, and the pointing member is sleeved on the plurality of clamping protrusions with an interference fit.

[0021] Furthermore, the pointing member includes a plane pointer and a vertical pointer perpendicular to the plane pointer arranged at both ends; the plane pointer and the vertical pointer are used to indicate the same scale of the first scale in the plane and vertical directions for reading respectively.

[0022] Furthermore, the second scale is arranged on the circumferential side surface or the disk surface of the intensive reading disk.

[0023] Furthermore, a rotating handle is fixedly provided on one end of the rotating rod extending out of the measuring ruler body; and anti-slip grooves are provided on the rotating handle.

[0024] Furthermore, the measuring ruler body comprises a plate-like structure.

[0025] Another aspect of the present invention further provides a method for installing the mounting accuracy of an automobile suspension, using the automobile suspension mounting accuracy measuring device provided by the present invention, the method comprising:

[0026] The pointing assembly is screwed onto the threaded section of the rotating rod, and the precision reading disk is sleeved onto the rotating rod;

[0027] Pass the rotating rod equipped with the pointing assembly and the precision reading disk through the groove of the upper scale body or the lower scale body, so that the pointing assembly is located in the slide groove, and then fix the upper scale body and the lower scale body to form a measuring scale body;

[0028] Twist the rotating rod to make the pointing assembly point to a scale line of the first scale;

[0029] When the pointing mark does not point to the 0 scale line of the second scale, an external force is applied to rotate the precision reading disk so that the precision reading disk and the rotating rod rotate relatively until the pointing mark points to the 0 scale line of the second scale.

[0030] According to the installation method of the automobile suspension mounting accuracy measuring device provided by the present invention, the step of screwing the pointing assembly onto the threaded section of the rotating rod comprises screwing a nut slider of the pointing assembly onto the threaded section of the rotating rod;

[0031] After the upper ruler body and the lower ruler body are fixedly connected to form the measuring ruler body, the method further includes fixing the pointing member to the nut slider.

[0032] According to the present invention, a method for installing an automobile suspension mounted precision measuring device is provided, wherein the rotating rod equipped with a pointing assembly and a precision reading plate is passed through a groove of an upper scale body or a lower scale body so that the pointing assembly is located in a slide groove, comprising:

[0033] The rotating rod is placed in the groove of the upper ruler body or the lower ruler body, so that the nut slider is located in the groove and the limiting rotating part is located in the limiting groove.

[0034] According to the present invention, a method for installing an automobile suspension mounted precision measuring device is provided, wherein the rotating rod equipped with a pointing assembly and a precision reading plate is passed through a groove of an upper scale body or a lower scale body so that the pointing assembly is located in a slide groove, comprising:

[0035] Place the rotating rod in the groove of the upper ruler body or the lower ruler body so that the precision reading disk is located at the reading window or in the calibration groove.

[0036] The beneficial effects of the present invention include: 1. The rotating rod can be rotatably installed through the measuring ruler body, and the pointing component is threadedly connected to the rotating rod. When the rotating rod rotates, it moves axially along the guide slot, and the pointing component points to the scale line of the first scale of the measuring ruler body for rough reading; the pitch of the threaded section of the rotating rod is a multiple of the graduation value of the first scale, and the rotating rod rotates one circle. The pointing component moves a distance that is a multiple of the set graduation value. The second scale on the intensive reading disk is set in the circumferential direction, which amplifies the accuracy of the graduation value, and cooperates with the pointing mark to perform accurate reading; the intensive reading disk is set on the rotating rod and can rotate relative to the rotating rod under the action of external force outside the rotating rod, which is convenient for calibrating the 0 scale line of the intensive reading disk;

[0037] 2. The measuring scale body is formed by fixing the upper scale body and the lower scale body, so that the rotating rod with the pointing component screwed thereon is conveniently rotated and arranged on the measuring scale body, which is convenient for installation; the axial movement of the rotating rod can be limited by the limiting mechanism to prevent it from slipping out of the measuring scale body;

[0038] 3. The limiting mechanism of the present invention has a simple structure. The limiting rotating member fixed on the rotating rod and the limiting groove of the measuring ruler body can limit the axial movement of the rotating rod without affecting the rotation of the rotating rod.

[0039] 4. Grooves are provided on the upper and lower scale bodies, and the two grooves are connected to form a guide slot, which is convenient for installing the rotating rod; the limit slot includes an upper limit slot and a lower limit slot, which is convenient for installing the ball when installing the rotating rod, so that the rotating rod can rotate around the axis when the axial movement is limited;

[0040] 5. A gap is reserved for installing the precision reading disk through the calibration groove on the lower scale body, and the precision reading disk protrudes from the lower scale body, so that the precision reading disk can be moved at the calibration groove to make the precision reading disk and the rotating rod rotate relative to each other to calibrate the 0 scale line of the second scale of the precision reading disk;

[0041] 6. The second scale on the precision reading disk can be exposed through the reading window on the upper scale body. The precision line serves as a pointing mark to facilitate alignment with the scale line of the second scale for accurate reading;

[0042] 7. The pointing assembly of the present invention has a simple structure. The nut slider is screwed with the rotating rod to realize sliding in the guide slot when the rotating rod rotates. The pointing member is fixed to the nut slider, which is convenient for installation to form the measuring ruler body and then install the pointing member, and realize the pointing member pointing to the first scale for rough reading.

[0043] 8. The pointing member of the present invention comprises a flat pointer and a vertical pointer, which indicate the first scale in the plane and vertical directions respectively, and the vertical pointer can be used to point to the measuring point of the object to be measured, and read the value on the flat pointer;

[0044] 9. By turning the handle and its anti-slip pattern, it is convenient to twist the rotating rod and move the pointing component to achieve measurement;

[0045] 10. The present invention provides an installation method for an automobile suspension mounting precision measuring device, which fully utilizes the structural characteristics of the automobile suspension mounting precision measuring device provided by the present invention, can quickly assemble a measuring device, calibrate the 0 scale line of the second scale of the precision reading disk, and then use it for measurement.

[0046] The automobile suspension mounting precision measuring device disclosed by the present invention has a threaded section of a rotating rod screwed to a pointing component, and the rotating rod can be rotated to move the pointing component to point to a first scale for rough reading; the pitch of the threaded section is in a multiple relationship with the graduation value of the first scale, and a precision reading disk is arranged on the rotating rod and can be adjusted to rotate synchronously with the rotating rod, and a second scale arranged in a circumferential direction amplifies the precision of the graduation value, and accurate reading is performed in conjunction with a pointing mark, and the operation and use are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 : Schematic diagram of the structure of the vehicle suspension mounting accuracy measurement device;

[0048] Figure 2 : A schematic diagram of the exploded structure of an embodiment of a vehicle suspension mounting accuracy measuring device;

[0049] Figure 3 : Schematic diagram of the front and back structures of the upper scale body of the measuring scale body;

[0050] Figure 4 : Structural schematic diagram of the lower scale body of the measuring scale body;

[0051] Figure 5 : Schematic diagram of the structure of the rotating rod;

[0052] Figure 6 : Schematic diagram of the structure of the intensive reading disk;

[0053] Figure 7 : Schematic diagram of the structure of the nut slider;

[0054] Figure 8 : Structural diagram of the pointing component;

[0055] Fig. 9 : Schematic diagram of the measuring device for measuring the suspension mounting accuracy;

[0056] Among them: 1—measuring scale body; 10—guide slide groove; 11—upper scale body; 111—reading window; 112—precision reading line; 12—lower scale body; 121—calibration groove; 13—placing groove; 14—groove; 15—first scale; 16—limit groove; 161—upper limit groove; 162—lower limit groove; 2—rotating rod; 21—rotating handle; 22—limit rotating part; 3—precision reading disk; 31—second scale; 4—pointing assembly; 41—nut slider; 42—pointing part; 421—plane pointer; 422—vertical pointer; 5—suspension support shell; 51—reference plane; 6—suspension support arm; 61—edge line. DETAILED DESCRIPTION

[0057] The embodiments of the present invention are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and the accompanying drawings are not drawn to scale and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0058] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0061] The present invention relates to a high-precision automobile suspension mounting accuracy measuring device, which can be used to accurately measure the mounting accuracy of automobile suspension, that is, to measure the position change before and after the powertrain is installed. The conventional ruler has inaccurate measurement accuracy and can only be accurate to 1mm. Before and after the powertrain is installed, the capacity allowed for some position changes is only a few millimeters. The installation precision is high, and more accurate measurements are required to ensure qualified installation. The threaded segment of the rotating rod 2 is screwed to the pointing component 4, and the rotating rod 2 can be rotated to move the pointing component 4 to point to the first scale 15 for rough reading; the pitch of the threaded segment is a multiple of the graduation value (minimum scale unit) of the first scale 15, and the precision disk 3 is arranged on the rotating rod 2 to adjust the synchronous rotation with the rotating rod 2. The second scale 31 arranged in the circumferential direction amplifies the precision of the graduation value, and cooperates with the pointing mark for accurate reading. The measurement accuracy can be 0.1mm or even 0.01mm, and the operation is convenient.

[0062] A vehicle suspension mounting accuracy measuring device, specifically, Figure 1-9 As shown, it includes a measuring ruler body 1, a rotating rod 2, a precision reading disk 3 and a pointing assembly 4; a guide slot 10 is provided on the measuring ruler body 1, and a first scale 15 is provided along the axial direction of the guide slot 10; a pointing mark is provided on the measuring ruler body 1; the rotating rod 2 is rotatably connected to the measuring ruler body 1 at both ends, and one end passes through the guide slot 10 and extends out of one end of the measuring ruler body 1, the rotating rod 2 includes a threaded section located in the guide slot 10, and the pitch of the threaded section is a multiple relationship with the graduation value of the first scale 15, including the pitch being several times the graduation value or the graduation value being several times the pitch; the precision reading disk 3 is sleeved on the rotating rod 2 with an interference fit, and can rotate relative to the rotating rod 2 when an external force is applied, and the precision reading disk 3 is in a circular A second scale 31 is provided in the circumferential direction, and the second scale 31 is used to cooperate with the pointing mark for accurate reading; the precision reading disk 3 can rotate relative to the rotating rod 2 when an external force is applied, and is used to calibrate the second scale 31, that is, when the pointing component 4 is facing a scale line pointing to the first scale 15, the precision reading disk 3 is moved to rotate relative to the rotating rod 2 to make the 0 scale line of the second scale 31 face the pointing mark; the second scale 31 can be circumferentially arranged on the disk surface or circumferential side of the precision reading disk 3; the pointing component 4 is threadedly connected to the threaded section of the rotating rod 2, and when the rotating rod 2 rotates, it is limited by the side wall of the guide slot 10 and slides axially along the guide slot 10, and is used to point to the first scale 15.

[0063] In a preferred embodiment, Figure 2As shown, the measuring ruler body 1 includes an upper ruler body 11 and a lower ruler body 12 fixed on the upper ruler body 11; a groove 14 is provided on the upper ruler body 11 and / or the lower ruler body 12, including three schemes, one is that the upper ruler body 11 is provided with a groove 14, the second is that the lower ruler body 12 is provided with a groove 14, and the third is that both the upper ruler body 11 and the lower ruler body 12 are provided with a groove 14; the groove 14 forms a guide slide groove 10 when the upper ruler body 11 is fixed to the lower ruler body 12, and the groove 14 directly serves as the guide slide groove 10, or the two grooves 14 are connected to form the guide slide groove 10; one end of the groove 14 is connected to a placement groove 13 extending from the end of the measuring ruler body 1; the placement groove 13 is similar to the guide slide groove 10, and can be provided on the upper ruler body 11 and / or the lower ruler body 12 corresponding to the groove 14; the rotating rod 2 and the measuring ruler body 1 are cooperated to be provided with a limiting structure for axially limiting the rotating rod 2; the first scale line can be provided on the upper ruler body 11 or the lower ruler body 12. Since the rotating rod 2 is arranged on the measuring scale body 1 to rotate around its own axis, and the pointing component 4 must be screwed, it is not convenient to use the integrally formed measuring scale body 1 for assembly. It is divided into two parts, that is, the measuring scale body 1 is formed by fixing the upper scale body 11 and the lower scale body 12, so that the rotating rod 2 with the pointing component 4 screwed thereon can be rotated and arranged on the measuring scale body 1, which is convenient for installation; the axial movement of the rotating rod 2 can be limited by the limiting mechanism to prevent it from slipping out of the measuring scale body 1.

[0064] Based on the measurement scale body 1 including an upper scale body 11 and a lower scale body 12, as Figure 2 As shown, the lower scale body 12 is provided with a plurality of pins, and the upper scale body 11 is provided with a plurality of pin holes corresponding to the pins, and is correspondingly clamped on the pins through the plurality of pin holes to be fixedly connected with the lower scale body 12 to form the measuring scale body 1; the setting positions of the pins and the pin holes are interchangeable, that is, the pins and the pin holes are respectively arranged on the upper scale body 11 and the lower scale body 12.

[0065] On the basis that the measuring ruler body 1 includes an upper ruler body 11 and a lower ruler body 12, as Figure 2-4 As shown, the limiting structure includes a limiting rotating member 22 and a limiting groove 16. The limiting rotating member 22 is fixedly arranged on one end of the rotating rod 2 located inside the measuring ruler body 1. The limiting groove 16 is arranged on one end of the measuring ruler body 1 that is connected to the guide slide groove 10, and the limiting groove 16 is coupled to the limiting rotating member 22. The inner wall of the limiting groove 16 abuts against the limiting rotating member 22 in the axial direction of the rotating rod 2 to limit the axial movement of the rotating rod 2. The limiting rotating member 22 can rotate with the rotating rod 2 in the limiting groove 16. The limiting rotating member 22 includes but is not limited to a sphere, which can be a plate-like structure protruding from the side wall of the rotating rod 2 or a conical structure with a small end near the rotating rod 2 and a large end far away. Since the limiting groove 16 is coupled to the limiting rotating member 22, the sphere can rotate with the rotating rod 2 when the rotating rod 2 rotates, without affecting the rotation of the rotating rod 2. At the same time, the axial movement of the rotating rod 2 can be limited in both directions. The structure is simple and easy to use.

[0066] On the basis that the measuring ruler body 1 includes an upper ruler body 11 and a lower ruler body 12, as Figure 2-4As shown, the upper scale body 11 and the lower scale body 12 are both provided with grooves 14; the two grooves 14 are connected to form a guide slide 10 when the upper scale body 11 is fixed to the lower scale body 12; the limit groove 16 includes an upper limit groove 161 provided on the upper scale body 11 and a lower limit groove 162 provided on the lower scale body 12, and the upper limit groove 161 is connected to the lower limit groove 162 to form a complete limit groove 16 when the upper scale body 11 is connected to the lower scale body 12. When the limit rotation member 22 is a sphere, the limit groove 16 is a spherical structure. The upper scale body 11 and the lower scale body 12 are both provided with grooves 14, and the two grooves 14 are connected to form a guide slide 10, which is convenient for installing the rotating rod 2; the limit groove 16 includes an upper limit groove 161 and a lower limit groove 162 to facilitate the installation of the ball when installing the rotating rod 2, so that the rotating rod 2 can be rotated around the axis when the axial movement is limited. In addition, the placement groove 13 can also be divided into two parts and respectively arranged on the upper scale body 11 and the lower scale body 12.

[0067] Based on the fact that the measuring ruler body 1 includes an upper ruler body 11 and a lower ruler body 12, in another embodiment, a groove 14, a placement groove 13 and a limit groove 16 are provided at the bottom of the upper ruler body 11; the limit groove 16 is a columnar groove; the rotating rod 2 passes through the groove 14 and extends out of one side of the upper ruler body 11 through the placement groove 13, and the rotating rod 2 is completely embedded in the groove 14 of the upper ruler body 11 in the up and down directions; the lower ruler body 12 is fixed on the upper ruler body 11 as the bottom cover of the upper ruler body 11. Similarly, the groove 14, the limit groove 16 and the placement groove 13 may also be provided only on the lower ruler body 12.

[0068] Based on the measurement scale body 1 including an upper scale body 11 and a lower scale body 12, as Figure 2 and Figure 4 As shown, a calibration groove 121 is provided on the lower scale body 12; the intensive reading disk 3 is located in the calibration groove 121 and protrudes from the lower scale body 12; when the upper scale body 11 is fixedly connected to the lower scale body 12 to form the measuring scale body 1, the rotating rod 2 is screwed to make the pointing component 4 face the scale line of the first scale 15, and when the 0 scale line of the second scale 31 does not correspond to the pointing mark, adjustment is performed, the rotating rod 2 can be fixed, and an external force is applied at the calibration groove 121 to move the intensive reading disk 3, so that the intensive reading disk 3 and the rotating rod 2 rotate relative to each other, and the 0 scale line of the second scale 31 of the intensive reading disk 3 is adjusted to face the pointing mark.

[0069] In addition, the precision reading disk 3 may be located on a section of the rotating rod 2 extending out of the measuring ruler body 1 , in which case the calibration groove 121 is not required.

[0070] It is worth mentioning that when a calibration groove 121 is provided on the lower scale body 12, the intensive reading disk 3 protrudes from the calibration groove 121 and can be axially limited by the calibration groove 121 on the rotating rod 2. Then, the intensive reading disk 3 and the calibration groove 121 can be used as the above-mentioned limiting mechanism, the intensive reading disk 3 serves as the limiting rotating part 22, and the calibration groove 121 serves as the limiting groove 16.

[0071] Based on the calibration groove 121 being provided on the lower ruler body 12, Figure 3 As shown, the upper ruler body 11 is provided with a reading window 111 corresponding to the calibration groove 121; the pointing mark includes a precision reading line 112 provided on the upper ruler body 11 corresponding to the reading window 111, which is used to align with the scale line of the second scale 31 for accurate reading; preferably, a reading disk cover is provided on the upper ruler body 11 corresponding to the calibration groove 121, and the reading disk cover is provided with a reading window 111 and a precision reading line 112. Preferably, the second scale 31 is provided on the circumferential outer surface of the precision reading disk 3. When the second scale 31 is circumferentially provided on the surface of the precision reading disk 3, the reading disk cover is not required, the precision reading disk 3 protrudes from the reading window 111, and the precision reading line 112 is directly provided on the upper ruler body 11 for pointing to the second scale 31 on the surface of the precision reading disk 3.

[0072] In a preferred embodiment, Figure 2 and Figure 6 As shown, the graduation value of the first scale 15 is 1mm, the pitch of the threaded section of the rotating rod 2 is also 1mm, and the second scale 31 includes 10 scale lines evenly spaced in the circumferential direction, and the scale lines are numbered from 0-9; preferably, each spacing unit is equally divided into 5 or 10 minimum distance units according to the spacing from 0-9, and marked with scale lines; preferably, the second scale 31 includes 100 scale units evenly spaced in the circumference, which can achieve a measurement accuracy of 0.01mm. When the graduation value of the first scale 15 is a times the pitch, for example 2 times, the rotating rod 2 rotates a circles to move the pointing component 4 a graduation value distance u1. Correspondingly, one circle of the second scale 31 of the precision reading disk 3 corresponds to 1 / a of the graduation value u1 of the first scale 15. When the second scale 31 divides one circle into b equal parts (for example 100 parts), the graduation value u2 of the second scale 31 is 1 / ab. The larger the value of a is, the greater the measurement accuracy of the precision reading disk 3 is.

[0073] In certain preferred embodiments, Figure 2 , Figure 7-8 As shown, the pointing assembly 4 includes a nut slider 41 and a pointing member 42. The pointing member 42 is fixedly connected to the nut slider 41 and is used to point to the first scale 15 for reading. The nut slider 41 is threadedly connected to the threaded section of the rotating rod 2. When the rotating rod 2 rotates around the axis, it abuts against the side wall of the guide slot 10 and slides along the axial direction of the guide slot 10 to move the pointing member 42. The pointing assembly 4 has a simple structure. The nut slider 41 is threadedly connected to the rotating rod 2, so that the rotating rod 2 slides in the guide slot 10 when rotating. The pointing member 42 is fixedly connected to the nut slider 41, which is convenient for installing the measuring ruler body 1 and then installing the pointing member 42, and the pointing member 42 points to the first scale 15 for rough reading.

[0074] Based on the fact that the pointing assembly 4 includes a nut slider 41 and a pointing member 42, as shown in FIG. Figure 7-8As shown, the way in which the pointing member 42 is fixedly connected to the nut slider 41 is simple. The nut slider 41 is provided with a plurality of snap-in protrusions, and the pointing member 42 is provided with a plurality of snap-in holes. The pointing member 42 is snap-fitted to the corresponding snap-in protrusions through the plurality of snap-in holes by interference fit. The assembly can be achieved by aligning the plurality of snap-in holes with the plurality of snap-in protrusions respectively and pressing, and the installation is convenient.

[0075] Based on the fact that the pointing assembly 4 includes a nut slider 41 and a pointing member 42, as shown in FIG. Figure 8 As shown, the pointing member 42 includes a plane pointer 421 disposed at both ends and a vertical pointer 422 perpendicular to the plane pointer 421; the plane pointer 421 and the vertical pointer 422 are used to indicate the same scale of the first scale 15 in the plane and vertical directions for reading, that is, the vertical pointer 422 points to the vertical direction and points to the first scale 15 for reading through the plane pointer 421. The vertical pointer 422 can point to the measuring point of the object to be measured, and the reading can be performed through the plane pointer 421, thereby improving the versatility and convenience of the measuring device.

[0076] In a preferred embodiment, Figure 5 As shown, a rotating handle 21 is fixedly arranged at one end of the rotating rod 2 extending out of the measuring ruler body 1, and the rotating handle 21 can be integrally formed with the rotating rod 2; and an anti-slip pattern is arranged on the rotating handle 21. By rotating the rotating handle 21 and its anti-slip pattern, it is convenient to rotate the rotating rod 2 and move the pointing component 4 to achieve measurement.

[0077] In a preferred embodiment, Figure 2 As shown, the measuring ruler body 1 includes a plate-like structure, and the upper ruler body 11 and the lower ruler body 12 can both be plate-like structures; the measuring ruler body 1 is not limited to a plate-like structure, and can also be a columnar structure or other structures that are convenient for measurement.

[0078] In actual use, the device is first calibrated to ensure that when the horizontal pointer of the pointing member 42 points to the integer millimeter scale of the first scale 15, the reading of the secondary scale (second scale 31) is 0; if the reading of the secondary scale is not 0, the precision reading disk 3 exposed outside the lower scale body 12 is rotated to make it read 0. In actual measurement, the structural characteristics of the part can select the reference surface 51 for measurement, such as Fig. 9As shown, the side of the suspension support shell 5 is selected as the reference plane 51, and the edge line 61 of the suspension arm 6 is selected as the measurement target. The change in the distance between the two before and after the powertrain is mounted is the lateral mounting accuracy of the whole vehicle suspension. Before the powertrain is mounted, the measuring device is erected perpendicular to the measuring plane, and the left side is close to the side of the suspension support shell 5; the rotating handle 21 of the rotating rod 2 is screwed to move the pointing member 42 until the plane pointer 421 of the pointing member 42 points to the edge line 61 of the suspension arm 6; through the values ​​of the main scale and the auxiliary scale, the measurement value Y1 (accuracy 0.01mm) of the first scale 15 plus the second scale 31 is read. After the powertrain is mounted, the distance value Y2 (accuracy 0.01mm) from the edge line 61 of the suspension arm 6 to the side of the suspension support shell 5 is measured in the same measurement method as above. The lateral mounting accuracy of the whole vehicle suspension is: △Y=Y2-Y1. The measurement of the longitudinal and vertical loading accuracy of the vehicle suspension is similar.

[0079] Another aspect of the present invention further provides a method for installing a vehicle suspension mounting accuracy measuring device. Using the vehicle suspension mounting accuracy measuring device provided by the present invention, the method comprises:

[0080] S1, screw the pointing assembly 4 onto the threaded section of the rotating rod 2, and sleeve the intensive reading disk 3 onto the rotating rod 2;

[0081] S2, pass the rotating rod 2 equipped with the pointing component 4 and the precision reading disk 3 through the groove 14 of the upper scale body 11 or the lower scale body 12, so that the pointing component 4 is located in the slide groove, and then fix the upper scale body 11 and the lower scale body 12 to form the measuring scale body 1;

[0082] S3, rotating the rotating rod 2 to make the pointing component 4 point to a scale line of the first scale 15;

[0083] S4. When the pointing mark does not point to the 0 scale line of the second scale scale 31 , apply external force to rotate the precision reading disk 3 so that the precision reading disk 3 and the rotating rod 2 rotate relative to each other until the pointing mark points to the 0 scale line of the second scale scale 31 .

[0084] According to an installation method of a vehicle suspension mounting accuracy measuring device provided by the present invention, in step S1, the pointing component 4 is screwed onto the threaded section of the rotating rod 2, including screwing the nut slider 41 of the pointing component 4 onto the threaded section of the rotating rod 2;

[0085] After the upper ruler body 11 and the lower ruler body 12 are fixedly connected to form the measuring ruler body 1 in step S2 , the method further includes fixing the pointing member 42 to the nut slider 41 .

[0086] According to the installation method of the automobile suspension mounted precision measuring device provided by the present invention, in step S2, the rotating rod 2 equipped with the pointing component 4 and the precision reading plate 3 is passed through the groove 14 of the upper scale body 11 or the lower scale body 12, so that the pointing component 4 is located in the slide groove, including:

[0087] S21, placing the rotating rod 2 in the groove 14 of the upper ruler body 11 or the lower ruler body 12, so that the nut slider 41 is located in the groove 14 and the limiting rotating member 22 is located in the limiting groove 16.

[0088] According to the installation method of the automobile suspension mounted precision measuring device provided by the present invention, in step S2, the rotating rod 2 equipped with the pointing component 4 and the precision reading plate 3 is passed through the groove 14 of the upper scale body 11 or the lower scale body 12, so that the pointing component 4 is located in the slide groove, including:

[0089] S22, placing the rotating rod 2 in the groove 14 of the upper ruler body 11 or the lower ruler body 12, so that the precision reading disk 3 is located at the reading window 111 or in the calibration groove 121.

[0090] During actual installation, the nut slider 41 is threadedly connected to the threaded section of the rotating rod 2, and the precision reading disk 3 is sleeved on the rotating rod 2. The rotating rod 2 is then placed on the groove 14 of the lower scale body 12 so that the ball is located in the lower groove 14 and the precision reading disk 3 is located in the calibration groove 121 and protrudes from the lower scale body 12. The upper scale body 11 is then fixed to the lower scale body 12, and the pointing member 42 is fixed to the nut slider 41. The rotating handle 21 is rotated to make the pointing member 42 face a scale line of the first scale 15, the rotating rod 2 is fixed, and the precision reading disk 3 is moved to protrude from the bottom of the calibration groove 121 so that the precision reading disk 3 rotates relative to the fixed rod and the precision reading line 112 is aligned with the 0 scale line of the second scale 31 to complete the calibration.

[0091] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision automobile suspension mounting accuracy measuring device, characterized in that: include, A measuring ruler body (1), wherein a guide slot (10) is provided on the measuring ruler body (1), and a first scale (15) is provided along the axial direction of the guide slot (10); and a directional mark is provided on the measuring ruler body (1); A rotating rod (2), wherein both ends of the rotating rod (2) are rotatably connected to the measuring ruler body (1), and one end passes through the guide slot (10) and extends out of one end of the measuring ruler body (1), the rotating rod (2) comprises a threaded section located in the guide slot (10), and the pitch of the threaded section is in a multiple relationship with the graduation value of the first scale (15); A precision reading disk (3), wherein the precision reading disk (3) is sleeved on the rotating rod (2) with an interference fit, and can rotate relative to the rotating rod (2) when an external force is applied, and the precision reading disk (3) is provided with a second scale (31) in the circumferential direction, and the second scale (31) is used to cooperate with the pointing mark to perform accurate reading; A pointing component (4) is threadedly connected to the threaded section of the rotating rod (2) and slides axially along the guide slot (10) when the rotating rod (2) rotates, so as to point to the first scale (15).

2. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 1, characterized in that: The measuring ruler body (1) comprises an upper ruler body (11) and a lower ruler body (12) fixed on the upper ruler body (11); a groove (14) is provided on the upper ruler body (11) and / or the lower ruler body (12); the groove (14) forms the guide slot (10) when the upper ruler body (11) is fixed to the lower ruler body (12); one end of the groove (14) is connected to a placement slot (13) extending from the end of the measuring ruler body (1); the rotating rod (2) cooperates with the measuring ruler body (1) to be provided with a limiting structure for axially limiting the rotating rod (2).

3. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 2, characterized in that: The limiting structure comprises a limiting rotating member (22) fixedly arranged on the rotating rod (2) and a limiting groove (16) arranged on the measuring ruler body (1) and connected to one end of the guide sliding groove (10) and coupled to the limiting rotating member (22); the limiting rotating member (22) abuts against the inner wall of the limiting groove (16) in the axial direction of the rotating rod (2).

4. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 3, characterized in that: The groove (14) is provided on both the upper scale body (11) and the lower scale body (12); the two grooves (14) are connected to form the guide slide groove (10) when the upper scale body (11) is fixedly connected to the lower scale body (12); the limit groove (16) comprises an upper limit groove (161) provided on the upper scale body (11) and a lower limit groove (162) provided on the lower scale body (12); and the limit rotation member (22) comprises a spherical body.

5. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 2, characterized in that: The lower ruler body (12) is provided with a calibration groove (121); the precision reading disk (3) is located in the calibration groove (121) and protrudes from the lower ruler body (12).

6. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 5, characterized in that: The upper ruler body (11) is provided with a reading window (111) corresponding to the calibration groove (121); the pointing mark comprises a precision reading line (112) provided on the upper ruler body (11) corresponding to the reading window (111).

7. A high-precision automobile suspension mounting accuracy measuring device as described in any one of claims 1 to 6, characterized in that: The pointing assembly (4) comprises a nut slider (41) threadedly connected to the rotating rod (2) and a pointing member (42) fixed on the nut slider (41), wherein the pointing member (42) is used to point to the first scale (15) for reading.

8. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 7, characterized in that: The pointing member (42) comprises a plane pointer (421) arranged at two ends and a vertical pointer (422) perpendicular to the plane pointer (421); the plane pointer (421) and the vertical pointer (422) are respectively used to indicate the same scale of the first scale meter (15) in the plane and vertical directions for reading.

9. A high-precision automobile suspension mounting accuracy measuring device as claimed in claim 1, characterized in that: A rotating handle (21) is fixedly provided at one end of the rotating rod (2) extending out of the measuring ruler body (1); and anti-slip grooves are provided on the rotating handle (21).

10. A method for installing a vehicle suspension mounting accuracy measuring device, characterized in that: Using the automobile suspension mounting accuracy measuring device as described in any one of claims 2 to 9, the method comprises: The pointing assembly (4) is screwed onto the threaded section of the rotating rod (2), and the reading disk (3) is sleeved onto the rotating rod (2); The rotating rod (2) equipped with the pointing component (4) and the precision reading disk (3) is passed through the groove (14) of the upper ruler body (11) or the lower ruler body (12) so that the pointing component (4) is located in the slide groove, and then the upper ruler body (11) and the lower ruler body (12) are fixedly connected to form the measuring ruler body (1); The rotating rod (2) is rotated to make the pointing component (4) point to a scale line of the first scale gauge (15); When the pointing mark does not point to the 0 scale line of the second scale meter (31), an external force is applied to rotate the precision reading disk (3) so that the precision reading disk (3) and the rotating rod (2) rotate relative to each other until the pointing mark points to the 0 scale line of the second scale meter (31).

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