Measuring device for a balancing machine

Abstract

The utility model discloses a measuring device applied to balance machine belongs to tire balance technical field. The utility model discloses a measuring device applied to balance machine includes: measuring claw, base plate, first baffle, second baffle, three guide rods, draw scale and first measurement module, and measuring claw is used for fitting installation in the highest point of the inside edge of the hub of balance machine, and base plate is fixed on balance machine, and first baffle and second baffle are arranged respectively at both ends of base plate, and three guide rods are parallel and are fixed between first baffle and second baffle and are triangular distribution, and draw scale is slidably arranged between three guide rods, and one end of draw scale penetrates first baffle and is connected with measuring claw, and when measuring claw fits inside edge of hub, drives draw scale displacement, and first measurement module is used for detecting draw scale displacement and calculates hub inside diameter value. Through adopting the structure design of three guide rods and being triangular distribution, make draw scale on guide rod sliding more stable, effectively solved the problem of the existing measuring scale and pulled the jam.

Description

Technical Field

[0001] This application relates to the field of tire balancing technology, and more particularly to a measuring device used in balancing machines. Background Technology

[0002] With the rapid development of the automotive industry, wheel balancing technology plays an increasingly important role in automotive repair and maintenance. As a specialized device for detecting and correcting wheel dynamic balance, the wheel balancing machine's measurement accuracy and ease of operation directly affect the quality and efficiency of wheel balancing. During the wheel balancing process, accurately measuring the inner diameter of the wheel hub is one of the key factors in ensuring the correct installation position of the balance weights.

[0003] Currently, the most common balancing machine measuring devices on the market are mainly of two types: manual and automatic. Among them, the automatic measuring tape system is widely used due to its advantages of simple operation and high measurement accuracy. However, in actual measurement, the existing measuring tape mainly uses two fixing rings to fix the tape to the box. One fixing ring is fixed to one end of the tape, and the other fixing ring is fixed to the middle of the tape, leaving the other end of the tape suspended above the box. Because one fixing ring is fixed to the middle of the tape, the stretching direction of the tape is restricted by the fixing ring when it moves back and forth, thus limiting the stretching length. This makes it unsuitable for measuring large-sized or irregularly shaped wheel hubs. Furthermore, because one end of the tape is suspended, the stability of the tape during stretching and reciprocating movement is poor, and the tape is prone to jamming.

[0004] In summary, existing balancing machine measuring devices still have several technical problems. First, traditional measuring rulers often have insufficient extension length, making them unsuitable for measuring hubs of different sizes. This is especially true for large hubs, where the measuring ruler cannot effectively reach the highest point of the hub's inner edge, leading to inaccurate measurements. Second, existing measuring ruler systems frequently experience jamming during use, affecting the smoothness and accuracy of measurements, especially after prolonged use as mechanical wear exacerbates this problem. Furthermore, most existing measuring rulers require assembly on the machine platform, a cumbersome and time-consuming process that reduces work efficiency. These problems severely restrict the practicality and efficiency of balancing machine measuring devices, necessitating a structurally optimized and easily operable device to address these technical issues. Utility Model Content

[0005] In view of the problems of limited stretching length and easy jamming of existing tape measures, a measuring device for balancing machines is provided to ensure smooth reciprocating movement of the tape measure during stretching and to achieve the maximum stretching length.

[0006] This application provides a measuring device for a balancing machine, including: a measuring jaw for engaging the highest point of the inner edge of the wheel hub to be measured, mounted on the balancing machine; and further including:

[0007] The base plate is fixed on the balancing machine;

[0008] A first baffle is disposed at one end of the substrate;

[0009] A second baffle is disposed at the other end of the substrate;

[0010] Three guide rods are fixed between the first baffle and the second baffle in a parallel and triangular arrangement.

[0011] A measuring tape is slidably disposed between the three guide rods. One end of the measuring tape passes through the first baffle and is connected to the measuring claw. When the measuring claw is in contact with the inner edge of the wheel hub, it drives the measuring tape to move.

[0012] The first measurement module is used to detect the displacement of the measuring tape and calculate the inner diameter of the wheel hub.

[0013] Optional, also includes:

[0014] A sliding plate is positioned between the first baffle and the second baffle. The sliding plate is fixed to the measuring tape and located on the side away from the measuring claw. Three through holes are provided on the sliding plate at positions corresponding to the three guide rods. The measuring tape drives the sliding plate to reciprocate along the axial direction of the three guide rods.

[0015] Optional, also includes:

[0016] An elastic reset component is fitted around the pull ruler. One end of the elastic reset component is connected to the first baffle, and the other end of the elastic reset component is connected to the other end of the pull ruler.

[0017] Optionally, the elastic reset assembly includes at least two springs, which are connected in series along the axial direction of the ruler and sleeved on the outside of the ruler, and the springs are connected by a connecting ring.

[0018] Optional, also includes:

[0019] A stop block, fixed on the base plate, is located on the side of the slide away from the measuring claw, and is used to restrict the slide from moving towards the second stop plate when the elastic reset assembly is reset.

[0020] Optionally, the first measuring module is disposed on the side of the second baffle near the measuring tape.

[0021] Optionally, the first measurement module uses a first displacement sensor.

[0022] Optional, also includes:

[0023] A guide wheel is disposed on the upper surface of the substrate;

[0024] A winding wheel is disposed on the substrate and located between the winding wheel and the second baffle;

[0025] A steel wire rope, one end of which is wound around the winding reel, and the other end of which is connected to the other end of the measuring tape via a guide reel;

[0026] The second measuring module is located at the bottom of the winding wheel and is used to detect the rotation angle of the winding wheel and convert it into the displacement compensation value of the measuring tape.

[0027] Optionally, the second measuring module employs a potentiometer, the contacts of which rotate coaxially with the winding wheel.

[0028] The beneficial effects of the above technical solution are as follows:

[0029] In this technical solution, the measuring device applied to the balancing machine includes: a measuring claw, a base plate, a first baffle, a second baffle, three guide rods, a measuring tape, and a first measuring module. The measuring claw is used to fit against the highest point of the inner edge of the wheel hub to be measured, which is mounted on the balancing machine. The base plate is fixed on the balancing machine. The first baffle and the second baffle are respectively disposed at both ends of the base plate. The three guide rods are parallel and triangularly distributed and fixed between the first baffle and the second baffle. The measuring tape is slidably disposed between the three guide rods, with one end of the measuring tape passing through the first baffle and connecting to the measuring claw. When the measuring claw fits against the inner edge of the wheel hub, it drives the measuring tape to move. The first measuring module is used to detect the displacement of the measuring tape and calculate the inner diameter of the wheel hub. This application, by adopting a triangularly distributed structure design of the three guide rods, makes the sliding of the measuring tape on the guide rods more stable, effectively solving the problem of the existing measuring tape pulling and jamming. The modular design of the measuring tape structure allows it to be assembled first and then placed on the machine, greatly saving assembly time. At the same time, the measuring tape of this application has a long extension length, which can meet the measurement needs of special tires and expand the applicability of the equipment. Compared with existing technologies, this application not only improves measurement accuracy and user experience, but also simplifies the installation process and improves work efficiency. Attached Figure Description

[0030] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0031] Figure 1 This is a front view of one embodiment of the measuring device applied to a balancing machine as described in this application;

[0032] Figure 2 for Figure 1 A three-dimensional image.

[0033] Explanation of reference numerals in the attached drawings: measuring claw 1, first baffle 2, base plate 3, pull gauge 4, guide rod 5, spring 6, connecting ring 7, sliding plate 8, stop block 9, first measuring module 10, second baffle 11, guide wheel 12, wire rope 13, winding wheel 14. Detailed Implementation

[0034] The advantages of this application are further illustrated below with reference to the accompanying drawings and specific embodiments.

[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0036] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0037] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0038] In the description of this application, it should be understood that the numerical labels before the steps do not indicate the order of the steps, but are only used to facilitate the description of this application and to distinguish each step, and therefore should not be construed as a limitation of this application.

[0039] The embodiments of this application are mainly applied to the automotive field, see below. Figure 1 and Figure 2A measuring device for a balancing machine includes: a measuring claw 1, a base plate 3, a first baffle 2, a second baffle 11, three guide rods 5, a ruler 4, and a first measuring module 10. The measuring claw 1 is used to fit against the highest point of the inner edge of the wheel hub to be measured, which is mounted on the balancing machine. The base plate 3 is fixed on the balancing machine. The first baffle 2 and the second baffle 11 are respectively disposed at both ends of the base plate 3. The three guide rods 5 are parallel and triangularly distributed and fixed between the first baffle 2 and the second baffle 11. The ruler 4 is slidably disposed between the three guide rods 5, and one end of the ruler 4 passes through the first baffle 2 and connects to the measuring claw 1. When the measuring claw 1 fits against the inner edge of the wheel hub, it drives the ruler 4 to move. The first measuring module 10 is used to detect the displacement of the ruler 4 and calculate the inner diameter of the wheel hub. This application employs a triangularly distributed structure with three guide rods 5, which makes the sliding of the measuring tape 4 more stable on the guide rods 5, effectively solving the problem of jamming when pulling the existing measuring tape. The modular design of the measuring tape 4 allows for pre-assembly before placement on the machine, greatly saving assembly time. Furthermore, the extended length of the measuring tape in this application meets the measurement needs of special tires, expanding the applicability of the equipment. Compared with existing technologies, this application not only improves measurement accuracy and user experience but also simplifies the installation process and increases work efficiency.

[0040] Example 1

[0041] This application addresses the problems of insufficient extension length of the measuring ruler in existing automotive tire balancing equipment, making it unable to measure special tires, and the drawbacks of ruler jamming during use affecting the user experience. It also addresses the long assembly time required for existing measuring rulers on a machine. (See [reference needed]). Figure 1 and Figure 2 A measuring device for use in a balancing machine is proposed, comprising: a measuring claw 1, a base plate 3, a first baffle 2, a second baffle 11, three guide rods 5, a pull gauge 4, and a first measuring module 10;

[0042] Measuring claw 1 is used to fit the highest point of the inner edge of the wheel hub to be measured, which is mounted on the balancing machine. Measuring claw 1 is made of hard alloy material, which has high wear resistance and corrosion resistance, ensuring stable measurement accuracy during long-term use. The contact surface of measuring claw 1 is designed to be arc-shaped, which can better fit the curved surface of the inner edge of the wheel hub and improve the accuracy of the measurement.

[0043] The base plate 3 is fixed to the balancing machine. Base plate 3 can be made of aluminum alloy, which is lightweight and high-strength. Multiple mounting holes are provided on the bottom of base plate 3, allowing it to be securely fixed to the worktable of the balancing machine using bolts. The upper surface of base plate 3 is precision-machined to ensure the flatness of the entire measuring device during installation.

[0044] A first baffle 2 is disposed at one end of the substrate 3; the first baffle 2 is vertically fixed on the substrate 3, is made of steel, and has sufficient rigidity to support the entire measuring system. A through hole is opened at the center of the first baffle 2 for the pull gauge 4 to pass through.

[0045] The second baffle 11 is disposed at the other end of the substrate 3; the second baffle 11 is arranged parallel to the first baffle 2 and is also vertically fixed on the substrate 3, and is also made of steel. The second baffle 11 is provided with a fixing structure for mounting the first measuring module 10.

[0046] Three guide rods 5 are parallel and triangularly distributed and fixed between the first baffle 2 and the second baffle 11. The guide rods 5 are made of high-precision stainless steel and their surfaces are precision ground to ensure good stability and accuracy when the sliding parts move on them. The three guide rods 5 are distributed in an equilateral triangle, which provides a stable support structure and reduces shaking and deviation during the measurement process.

[0047] A ruler 4 is slidably positioned between the three guide rods 5. One end of the ruler 4 passes through the first baffle 2 and connects to the measuring claw 1. When the measuring claw 1 is in contact with the inner edge of the hub, it causes the ruler 4 to move. The ruler 4 is made of high-strength alloy material, possessing good rigidity and stability. The surface of the ruler 4 is precision machined to ensure measurement accuracy. One end of the ruler 4 is firmly connected to the measuring claw 1, and the other end extends to the vicinity of the second baffle 11 for cooperation with the first measuring module 10.

[0048] The first measurement module 10 is used to detect the displacement of the measuring tape 4 and calculate the inner diameter of the wheel hub. The first measurement module 10 includes a high-precision displacement sensor capable of accurately capturing minute displacement changes in the measuring tape 4. The first measurement module 10 is also equipped with a data processing unit, which can convert the displacement data into the inner diameter of the wheel hub according to a preset algorithm and display the measurement results in real time on a display screen.

[0049] During operation, the measuring device is fixed to the balancing machine, with the measuring claw 1 facing the hub to be measured. Once the hub is placed on the balancing machine, the measuring claw 1 contacts the highest point of the hub's inner edge and displaces according to the shape of the inner edge. This displacement is transmitted through the gauge 4, which moves smoothly under the guidance of three guide rods 5. The first measuring module 10 detects the displacement of the gauge 4 and calculates the inner diameter of the hub using its built-in calculation program. The entire measurement process is fast and accurate, greatly improving the working efficiency of the balancing machine.

[0050] In this embodiment, the measuring device applied to the balancing machine adopts a three-guide rod triangularly distributed structure, which makes the sliding of the measuring tape more stable on the guide rods and effectively solves the problem of jamming when pulling the existing measuring tape. The modular design of the measuring tape structure allows it to be assembled before being placed on the machine, greatly saving assembly time. At the same time, the measuring tape of this application has a longer extension length, which can meet the measurement needs of special tires and expand the applicability of the equipment. Compared with the prior art, this application not only improves measurement accuracy and user experience, but also simplifies the installation process and improves work efficiency.

[0051] Example 2

[0052] Based on Example 1, see [link / reference] Figure 1 and Figure 2 The measuring device applied to the balancing machine in this embodiment also includes a sliding plate 8. The sliding plate 8 is disposed between the first baffle 2 and the second baffle 11. The sliding plate 8 is fixed to the tape measure 4 and located on the side away from the measuring claw 1. The sliding plate 8 has three through holes that are matched with the positions of the three guide rods 5. The tape measure 4 drives the sliding plate 8 to reciprocate along the axial direction of the three guide rods 5.

[0053] The slide plate 8 is made of high-strength engineering plastic, which is lightweight and has good self-lubricating properties. The three through holes on the slide plate 8 are precision-machined to maintain an appropriate gap with the three guide rods 5, ensuring smooth sliding without significant wobbling. The slide plate 8 and the pull gauge 4 are firmly fixed together by a threaded connection, forming a single integrated structure.

[0054] The design of the slide plate 8 enhances the stability of the entire measurement system. When the measuring claw 1 contacts the inner edge of the hub and generates displacement, the ruler 4 drives the slide plate 8 to move synchronously on the three guide rods 5. Due to the three-point contact between the slide plate 8 and the three guide rods 5, twisting and offset of the ruler 4 during movement are effectively prevented, ensuring the accuracy of the measurement data. At the same time, the presence of the slide plate 8 also reduces the direct friction between the ruler 4 and the guide rods 5, extending the service life of the device.

[0055] Example 3

[0056] Based on Example 2, see [link / reference] Figure 1 and Figure 2 The measuring device applied to the balancing machine in this embodiment also includes an elastic reset component.

[0057] An elastic reset component is fitted around the pull ruler 4. One end of the elastic reset component is connected to the first baffle 2, and the other end of the elastic reset component is connected to the other end of the pull ruler 4.

[0058] Furthermore, the elastic reset assembly includes at least two springs 6, which are connected in series along the axial direction of the ruler 4 and sleeved on the outside of the ruler 4. The springs 6 are connected to each other by a connecting ring 7.

[0059] Spring 6 is made of high-quality spring steel, which has good elasticity and fatigue resistance. The connecting ring 7 is made of aluminum alloy, which is lightweight and strong, and can firmly connect adjacent springs 6.

[0060] The design of the elastic reset component enables the measuring device to have an automatic reset function. When the measuring claw 1 contacts the inner edge of the hub and pushes the pull gauge 4 to move, the elastic reset component is compressed, storing elastic potential energy. After the measurement is completed, the elastic reset component releases the potential energy and automatically pushes the measuring claw 1 and the pull gauge 4 back to their initial positions, preparing for the next measurement.

[0061] The use of two springs 6 in series, instead of a single spring 6, gives the elastic reset assembly better linear characteristics and a longer working stroke. The connecting ring 7 between the two springs 6 ensures smooth transmission of elastic force, preventing twisting and deformation of the springs 6 during compression. This design greatly improves the ease of use and work efficiency of the measuring device. The elastic reset assembly design ensures that the ruler 4 can automatically return to its original position, further enhancing operational convenience.

[0062] Example 4

[0063] Based on Example 3, see [link to Example 3] Figure 1 and Figure 2 The measuring device applied to the balancing machine in this embodiment also includes a stop block 9. The stop block 9 is fixed on the base plate 3 and located on the side of the slide plate 8 away from the measuring claw 1, and is used to restrict the slide plate 8 from moving towards the second baffle 11 when the elastic reset assembly is reset.

[0064] The stop block 9 is made of hard rubber material, which has a certain degree of elasticity and cushioning performance. The stop block 9 is fixed to the base plate 3 by bolts, and its position can be finely adjusted as needed. The height of the stop block 9 is slightly higher than the thickness of the slide plate 8 to ensure that it can effectively prevent the slide plate 8 from moving.

[0065] The stop 9 is designed to limit the travel of the elastic reset assembly, preventing it from excessively moving the slide plate 8 and the pull gauge 4 when releasing energy. Once the elastic reset assembly pushes the measuring jaw 1 and the pull gauge 4 back to their initial positions, the slide plate 8 contacts the stop 9 and stops moving, and the system reaches a stable state. This design avoids shocks and vibrations during the reset process, extending the device's lifespan, while also ensuring the consistency of the measurement starting point and improving measurement repeatability.

[0066] Example 5

[0067] Based on Example 1, see [link / reference] Figure 1 and Figure 2 In this embodiment, the first measuring module 10 is disposed on the side of the second baffle 11 near the tape measure 4. The first measuring module 10 employs a first displacement sensor.

[0068] By way of example and not limitation, the first displacement sensor has a measurement range of 0 mm to 200 mm and a resolution of 0.01 mm. The sensor employs a non-contact measurement principle, which does not create resistance to the movement of the ruler 4, ensuring measurement accuracy. The sensor's output signal is a standard 4 mA to 20 mA current signal, exhibiting good anti-interference performance.

[0069] The first displacement sensor is fixed to the second baffle 11 by a dedicated mounting bracket, with its sensing end facing the end of the ruler 4. When the ruler 4 moves, the sensor captures the positional change of the end of the ruler 4 in real time and converts this information into an electrical signal output. After the sensor's output signal is processed by the signal conditioning circuit, it is sent to the microprocessor for calculation, ultimately obtaining the inner diameter value of the wheel hub.

[0070] The installation position of the first displacement sensor is carefully designed to ensure that the sensor's measuring axis is aligned with the moving axis of the ruler 4, thus avoiding angular errors. Simultaneously, the sensor's mounting bracket has a fine-tuning mechanism, allowing for precise position adjustments after installation, further improving measurement accuracy.

[0071] Example 6

[0072] Based on Example 2, see [link / reference] Figure 1 and Figure 2 The measuring device applied to the balancing machine in this embodiment also includes a guide wheel 12, a winding wheel 14, a wire rope 13, and a second measuring module.

[0073] A guide wheel 12 is disposed on the upper surface of the substrate 3. The guide wheel 12 is made of nylon material, which has good wear resistance and self-lubricating properties. The guide wheel 12 is mounted on the substrate 3 by bearings, can rotate freely, and has low frictional resistance.

[0074] A winding wheel 14 is disposed on the base plate 3 and located between the winding wheel 14 and the second baffle 11. The winding wheel 14 is made of aluminum alloy and has spiral grooves on its surface for winding the steel wire rope 13, ensuring that the steel wire rope 13 will not overlap or cross during the winding process. The winding wheel 14 is mounted on the base plate 3 by precision bearings, allowing for flexible rotation and accurate positioning.

[0075] A steel wire rope 13 is provided, one end of which is wound around the winding reel 14, and the other end of which is connected to the other end of the guide reel 12. The steel wire rope 13 is made of high-strength stainless steel, has a diameter of 0.5 mm, and possesses good flexibility and fatigue resistance. Both ends of the steel wire rope 13 are specially treated to form reliable connection points.

[0076] The second measuring module is located at the bottom of the winding wheel 14 and is used to detect the rotation angle of the winding wheel 14 and convert it into the displacement compensation value of the tape measure 4.

[0077] Furthermore, the second measuring module employs a potentiometer, the contacts of which rotate coaxially with the winding wheel 14.

[0078] In this embodiment, the potentiometer is a high-precision multi-turn potentiometer with a total resistance of 10 kiloohms and a linearity better than 0.1%. The potentiometer's shaft is coaxially connected to the shaft of the winding wheel 14. When the winding wheel 14 rotates, the potentiometer's contacts also rotate, generating a resistance change proportional to the rotation angle. This resistance change is converted into a voltage signal by a bridge circuit, and after analog-to-digital conversion, it is sent to the microprocessor for processing.

[0079] This dual measurement mechanism significantly improves measurement accuracy. The first measurement module 10 directly measures the displacement of the gauge 4, while the second measurement module indirectly measures the displacement of the gauge 4 by measuring the rotation angle of the winding wheel 14. The measurement results from both are fused using an algorithm, which effectively eliminates errors that may be introduced by a single measurement method, thereby improving the measurement accuracy and reliability of the entire system.

[0080] When the measuring claw 1 contacts the inner edge of the hub and pushes the measuring tape 4 to move, the measuring tape 4 drives the winding wheel 14 to rotate via the steel wire rope 13. The rotation angle of the winding wheel 14 is converted into an electrical signal by a potentiometer, and the displacement compensation value of the measuring tape 4 is calculated. This compensation value is compared and fused with the displacement value measured by the first measuring module 10 to obtain a more accurate value for the inner diameter of the hub. The design of pulling the winding wheel 14 to rotate via the steel wire rope 13 and driving the potentiometer to rotate enables precise dimensional measurement.

[0081] It should be noted that Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5, and Embodiment 6 are all measuring devices applied to balancing machines.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A measuring device for use in a balancing machine, comprising: A measuring claw, used to fit the highest point of the inner edge of the wheel hub to be measured, mounted on a balancing machine; characterized in that it further includes: The base plate is fixed on the balancing machine; A first baffle is disposed at one end of the substrate; A second baffle is disposed at the other end of the substrate; Three guide rods are fixed between the first baffle and the second baffle in a parallel and triangular arrangement. A measuring tape is slidably positioned between the three guide rods. One end of the measuring tape passes through the first baffle and connects to the measuring claw. When the measuring claw is in contact with the inner edge of the wheel hub, it drives the measuring tape to move. The first measurement module is used to detect the displacement of the measuring tape and calculate the inner diameter of the wheel hub.

2. The measuring device for a balancing machine according to claim 1, characterized in that, Also includes: A sliding plate is positioned between the first baffle and the second baffle. The sliding plate is fixed to the measuring tape and located on the side away from the measuring claw. Three through holes are provided on the sliding plate at positions corresponding to the three guide rods. The measuring tape drives the sliding plate to reciprocate along the axial direction of the three guide rods.

3. The measuring device for a balancing machine according to claim 2, characterized in that, Also includes: An elastic reset component is fitted around the pull ruler. One end of the elastic reset component is connected to the first baffle, and the other end of the elastic reset component is connected to the other end of the pull ruler.

4. The measuring device for a balancing machine according to claim 3, characterized in that, The elastic reset assembly includes at least two springs, which are connected in series along the axial direction of the ruler and sleeved on the outside of the ruler. The springs are connected by a connecting ring.

5. The measuring device for a balancing machine according to claim 3, characterized in that, Also includes: A stop block, fixed on the base plate, is located on the side of the slide away from the measuring claw, and is used to restrict the slide from moving towards the second stop block when the elastic reset assembly is reset.

6. The measuring device for a balancing machine according to claim 1, characterized in that, The first measuring module is located on the side of the second baffle near the measuring tape.

7. The measuring device for a balancing machine according to claim 6, characterized in that, The first measurement module uses a first displacement sensor.

8. The measuring device for a balancing machine according to claim 2, characterized in that, Also includes: A guide wheel is disposed on the upper surface of the substrate; A winding wheel is disposed on the substrate and located between the winding wheel and the second baffle; A steel wire rope, one end of which is wound around the winding reel, and the other end of which is connected to the other end of the measuring tape via a guide reel; The second measuring module is located at the bottom of the winding wheel and is used to detect the rotation angle of the winding wheel and convert it into the displacement compensation value of the measuring tape.

9. The measuring device for a balancing machine according to claim 8, characterized in that, The second measuring module uses a potentiometer, and the contacts of the potentiometer rotate coaxially with the winding wheel.

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