Pantograph multi-parameter comprehensive measuring instrument

By designing a pantograph multi-parameter integrated measuring instrument integrating pressure, displacement and angle sensors, combined with smart terminals, the problems of low measurement accuracy and difficult data recording in the existing detection methods are solved, and efficient and accurate detection and data management are achieved.

CN119880043APending Publication Date: 2025-04-25RES INST OF SCI & TECH OF CHINA RAILWAY CHENGDU BUREAU GRP CO LTD
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Patent Information

Application Number
CN202510196421.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-21
Publication Date
2025-04-25

AI Technical Summary

Technical Problem

The existing pantograph detection methods have problems such as low measurement accuracy, inconvenient operation, difficulty in recording and uploading data, and poor adaptability.

Method used

A pantograph multi-parameter integrated measuring instrument was designed, integrating pressure sensors, displacement sensors and angle sensors, combining intelligent terminals to achieve accurate measurement of key pantograph parameters, and supports data recording and uploading.

Benefits of technology

It significantly improves measurement accuracy, reduces artificial errors, improves detection efficiency and accuracy, and realizes convenient recording and uploading of data.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the invention provides a pantograph multi-parameter comprehensive measuring instrument, and relates to the technical field of pantograph parameter measurement, and the measuring instrument comprises a main body, a pressure measurement assembly, a sliding plate thickness measurement assembly, a pantograph rising and falling time measurement assembly, and an intelligent terminal. The pressure measuring assembly is arranged at one end of the main body and is used for measuring the pantograph rising pressure of the pantograph; a handle is arranged at the other end of the main body, and the pantograph rising and falling time measuring assembly is detachably arranged on the main body and is close to the handle; the slide plate thickness measuring assembly is arranged on the side surface of the main body and is used for measuring the thickness of a carbon slide plate on a pantograph; and the intelligent terminal is arranged on the main body, is in communication connection with the pressure measuring assembly, the sliding plate thickness measuring assembly and the pantograph lifting time measuring assembly, and is used for displaying measured values. According to the measuring instrument provided by the invention, the measuring precision can be remarkably improved, personal errors are reduced, and the detection efficiency and accuracy are improved.
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Description

Technical Field

[0001] The present application relates to the technical field of pantograph parameter measurement, and in particular to a pantograph multi-parameter comprehensive measuring instrument. Background Art

[0002] In the existing railway locomotive and EMU maintenance, pantographs are key devices for power supply, and their performance stability and reliability are crucial to the safe operation of locomotives and EMUs. However, the traditional pantograph key parameter detection method has many inconveniences and human errors.

[0003] Traditional methods mostly use manual measuring tools, such as vernier calipers, dynamometers, etc., to perform measurements one by one. This method is not only inefficient, but also easily affects the accuracy of the measurement results due to improper human operation or reading errors.

[0004] In addition, existing measurement equipment often has a single function and cannot meet the comprehensive measurement requirements of multiple pantograph parameters. It also lacks data recording and automatic uploading functions, which makes subsequent data analysis and troubleshooting inconvenient.

[0005] In the prior art, the key components used to measure pantographs mainly include independent tools such as dynamometers, vernier calipers, and stopwatches. These tools require manual operation during measurement, and perform pressure measurement, slide wear measurement, and lifting time measurement in sequence. There is a lack of correlation between the tools, and the measurement results need to be recorded manually, which can easily lead to data omissions or errors.

[0006] At the same time, these tools are often scattered in structure, not easy to carry and operate. In terms of workflow, traditional methods usually require multiple operators to collaborate, one operator is responsible for measurement, and another operator is responsible for recording data. This method is not only time-consuming and labor-intensive, but also prone to inconsistent measurement results due to different experience and skill levels of operators.

[0007] Problems with existing technologies:

[0008] 1. Low measurement accuracy: Due to improper manual operation or reading errors, there are large deviations in the measurement results.

[0009] 2. Inconvenient operation: The existing measurement tools are scattered in structure, inconvenient to carry and operate, and require collaboration of multiple people to complete the measurement task.

[0010] 3. Difficulty in data recording and uploading: Lack of data recording and uploading functions makes subsequent data analysis and troubleshooting inconvenient.

[0011] 4. Poor adaptability: Traditional measuring tools are often only applicable to specific types of pantographs and lack versatility. Summary of the invention

[0012] The embodiments of the present application provide a pantograph multi-parameter comprehensive measuring instrument to solve the technical problems existing in the prior art.

[0013] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0014] According to a first aspect of an embodiment of the present application, a pantograph multi-parameter comprehensive measuring instrument is provided, comprising: a main body, a pressure measuring component, a slide plate thickness measuring component, a pantograph raising and lowering time measuring component and an intelligent terminal;

[0015] The pressure measuring assembly is arranged at one end of the main body and is used to measure the pantograph raising pressure;

[0016] A handle is provided at the other end of the main body, and the lifting bow time measurement component is detachably provided on the main body and close to the handle;

[0017] The slide plate thickness measuring assembly is arranged on the side of the main body and is used to measure the thickness of the carbon slide plate on the pantograph;

[0018] The smart terminal is arranged on the main body, and the smart terminal is respectively connected to the pressure measurement component, the slide plate thickness measurement component and the bow lifting time measurement component for displaying the measured values.

[0019] In some embodiments of the present application, based on the aforementioned solution, the pressure measurement assembly includes: a pressure hook and a pressure sensor;

[0020] The pressure hook is arranged at one end of the main body;

[0021] The pressure sensor is arranged inside the main body, and the pressure hook is connected to the pressure sensor;

[0022] The pressure sensor is communicatively connected to the smart terminal.

[0023] In some embodiments of the present application, based on the aforementioned solution, a hook protection shell is provided on the outside of the pressure hook.

[0024] In some embodiments of the present application, based on the above scheme, the slide plate thickness measurement assembly includes: a wear thickness measurement head, a wear thickness measurement rod, a fixed middle frame, a pressure plate, a displacement sensor and a tension spring;

[0025] The wear thickness measuring head is installed on the hook protective shell, located at the end of the pressure hook, and arranged opposite to the wear thickness measuring rod;

[0026] The pressing plate is fixed on the fixed middle frame and is in sliding contact with the wear thickness measuring rod;

[0027] The wear thickness measuring rod is connected to the fixed middle frame by a clearance fit all around;

[0028] One end of the tension spring is connected to the wear thickness measuring rod, and the other end is connected to the fixed middle frame;

[0029] The displacement sensor is mounted on the fixed middle frame and is used to measure the displacement of the wear thickness measuring rod;

[0030] The displacement sensor is communicatively connected with the smart terminal;

[0031] The wear thickness measuring rod is extended by pressing the pressure plate, and the extended wear thickness measuring rod is retracted by the tension spring.

[0032] In some embodiments of the present application, based on the aforementioned solution, a groove is provided on the pressure plate, and a pin is provided on the wear thickness measuring rod, and the pin is driven by the groove to extend the wear thickness measuring rod.

[0033] In some embodiments of the present application, based on the aforementioned solution, a first magnet is provided on the wear thickness measuring rod, and the displacement sensor is installed on the fixed middle frame close to the first magnet.

[0034] In some embodiments of the present application, based on the aforementioned solution, the lifting bow time measurement assembly includes: a suction cup, an angle sensor and an angle sensor mounting body;

[0035] The angle sensor is arranged inside the angle sensor installation body, the angle sensor installation body is installed on the main body, and is communicatively connected with the smart terminal;

[0036] The suction cup is mounted on the surface of the angle sensor mounting body.

[0037] In some embodiments of the present application, based on the aforementioned solution, the lifting and lowering bow time measurement assembly further includes: a second magnet;

[0038] The second magnet is mounted on the angle sensor mounting body.

[0039] In some embodiments of the present application, based on the aforementioned solution, a camera assembly is further provided on the main body, and the camera assembly is communicatively connected to the smart terminal.

[0040] The technical solution of the present application can significantly improve measurement accuracy and reduce human errors, thereby improving detection efficiency and accuracy.

[0041] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0043] Figure 1 A schematic structural diagram of a pantograph multi-parameter comprehensive measuring instrument according to an embodiment of the present application is shown;

[0044] Figure 2 A schematic structural diagram of a slide plate thickness measuring assembly according to an embodiment of the present application is shown;

[0045] Figure 3 A side view of a slide plate thickness measurement assembly according to an embodiment of the present application is shown;

[0046] Figure 4 A schematic structural diagram of a bow lifting and lowering time measurement assembly according to an embodiment of the present application is shown.

[0047] Description of Reference Numerals

[0048] 1-main body, 2-pressure measurement component, 3-slide plate thickness measurement component, 4-lifting bow time measurement component, 5-intelligent terminal, 6-handle, 7-hook protection shell, 21-pressure hook, 31-wear thickness measurement head, 32-wear thickness measurement rod, 33-fixed middle frame, 34-pressure plate, 35-displacement sensor, 36-tension spring, 41-suction cup, 42-angle sensor installation body, 341-groove. DETAILED DESCRIPTION

[0049] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0050] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Some embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0053] The present application aims to provide a pantograph multi-parameter comprehensive measuring instrument to address the problems existing in existing pantograph detection, such as insufficient measurement accuracy, large human errors, low degree of equipment automation, and imperfect data collection and recording supervision mechanisms.

[0054] The measuring instrument can integrate technologies such as pressure sensors, displacement sensors and angle sensors to achieve accurate measurement of key parameters of the pantograph. At the same time, it can realize functions such as video recording, voice broadcasting, and data uploading based on smart terminals to improve the convenience and intelligence of the equipment.

[0055] Specifically, the embodiment of the present application provides a pantograph multi-parameter comprehensive measuring instrument, including: a main body, a pressure measuring component, a slide plate thickness measuring component, a pantograph raising and lowering time measuring component and an intelligent terminal;

[0056] The pressure measuring assembly is arranged at one end of the main body and is used to measure the pantograph raising pressure;

[0057] A handle is provided at the other end of the main body, and the lifting bow time measurement component is detachably provided on the main body and close to the handle;

[0058] The slide plate thickness measuring assembly is arranged on the side of the main body and is used to measure the thickness of the carbon slide plate on the pantograph;

[0059] The smart terminal is arranged on the main body, and the smart terminal is respectively connected to the pressure measurement component, the slide plate thickness measurement component and the bow lifting time measurement component for displaying the measured values.

[0060] It is understandable that the intelligent terminal can receive and display the data tested by the pressure measurement component, the slide thickness measurement component, and the bow lifting time measurement component to facilitate the operator to achieve parameter measurement.

[0061] For example, see Figure 1 , shows a schematic structural diagram of a pantograph multi-parameter comprehensive measuring instrument according to an embodiment of the present application.

[0062] like Figure 1 As shown, Figure 1 As shown, the measuring instrument includes a main body 1, a pressure measuring component 2, a slide plate thickness measuring component 3, a bow lifting time measuring component 4 and an intelligent terminal 5.

[0063] Among them, the pressure measuring component 2 is installed at the upper end of the main body 1, which is used to measure the pantograph raising pressure. The slide plate thickness measuring component 3 is arranged on the side of the main body 1, which is used to measure the thickness of the carbon slide plate on the pantograph. The lower end of the main body 1 is provided with a handle 6 for convenient operation by personnel. The pantograph raising and lowering time measurement component 4 is arranged on the main body 1, close to the handle 6.

[0064] The pressure measurement component 2, the slide thickness measurement component 3, and the bow lifting time measurement component 4 are all connected to the intelligent terminal 5 for communication. The data measured by the three can be transmitted to the intelligent terminal 5. The intelligent terminal 5 has data processing capabilities and display functions, etc. The intelligent terminal 5 is equipped with a display screen and corresponding control buttons. The measured data can be viewed and human-computer interaction can be performed through the intelligent terminal 5. The measured data can be uploaded using the intelligent terminal 5, which improves the convenience and intelligence level of the equipment.

[0065] Exemplarily, the intelligent terminal 5 can be designed based on an Android mainboard.

[0066] In some feasible embodiments, based on the above scheme, the pressure measurement component includes: a pressure hook and a pressure sensor;

[0067] The pressure hook is arranged at one end of the main body;

[0068] The pressure sensor is arranged inside the main body, and the pressure hook is connected to the pressure sensor;

[0069] The pressure sensor is communicatively connected to the smart terminal.

[0070] It can be understood that the pressure hook is used to hang on the pantograph beam to achieve measurement when measuring.

[0071] For example, see Figure 1 The measuring component 2 includes a pressure hook 21 and a pressure sensor. The pressure sensor is fixedly installed inside the main body 1. Figure 1 Not shown in the figure, the pressure hook 21 is arranged at the upper end of the main body 1, and the bottom of the pressure hook 21 is connected to the pressure sensor.

[0072] When measuring pressure, the pressure hook 21 is hung on the crossbeam of the pantograph, and the operator pulls the handle 6 by hand. When pressure is applied to the pressure hook 21, the pressure sensor generates a pressure value through the change of voltage, and the generated pressure value is subsequently transmitted to the smart terminal 5.

[0073] In some feasible embodiments, based on the above-mentioned solution, a hook protection shell is provided on the outside of the pressure hook.

[0074] For example, Figure 1 As shown, the hook protection shell 7 is arranged outside the pressure hook 21 to wrap the pressure hook 21 for protection.

[0075] In some feasible embodiments, based on the above scheme, the slide plate thickness measurement assembly includes: a wear thickness measurement head, a wear thickness measurement rod, a fixed middle frame, a pressure plate, a displacement sensor and a tension spring;

[0076] The wear thickness measuring head is installed on the hook protective shell, located at the end of the pressure hook, and arranged opposite to the wear thickness measuring rod;

[0077] The pressing plate is fixed on the fixed middle frame and is in sliding contact with the wear thickness measuring rod;

[0078] The wear thickness measuring rod is connected to the fixed middle frame by a clearance fit all around;

[0079] One end of the tension spring is connected to the wear thickness measuring rod, and the other end is connected to the fixed middle frame;

[0080] The displacement sensor is mounted on the fixed middle frame and is used to measure the displacement of the wear thickness measuring rod;

[0081] The displacement sensor is communicatively connected with the smart terminal;

[0082] The wear thickness measuring rod is extended by pressing the pressure plate, and the extended wear thickness measuring rod is retracted by the tension spring.

[0083] For example, Figure 1 and Figure 2 As shown, the slide plate thickness measuring assembly 3 includes: a wear thickness measuring head 31 , a wear thickness measuring rod 32 , a fixed middle frame 33 , a pressure plate 34 , a displacement sensor 35 and a tension spring 36 .

[0084] Among them, the wear thickness measuring head 31 is arranged on the hook protection shell 7, located at the top of the pressure hook 21, and is in a relative position with the wear thickness measuring rod 32. A clamping space is formed between the wear thickness measuring head 31 and the wear thickness measuring rod 32 for clamping the carbon slide plate of the pantograph. The fixed middle frame 33 serves as the installation frame of the entire slide plate thickness measuring assembly 3. The pressure plate 34 is fixedly installed on the fixed middle frame 33 by pins. The wear thickness measuring rod 32 is connected to the fixed middle frame 33 in the form of a clearance fit connection around to ensure that the wear thickness measuring rod 32 can move on the fixed middle frame 33. The pressure plate 34 is in sliding contact with the wear thickness measuring rod 32, and the pressure is generated by pressing the pressure plate 34 to the wear thickness measuring rod 32, so that the wear thickness measuring rod 32 is displaced and extends forward. The displacement sensor 35 is installed on the surface of the fixed middle frame 33, close to the wear thickness measuring rod 32, and is used to measure the displacement generated by the wear thickness measuring rod 32. One end of the tension spring 36 is fixedly connected to the fixed middle frame 33 through a pin, and the other end is fixedly connected to the bottom end of the wear thickness measuring rod 32 through a pin. When the wear thickness measuring rod 32 is in an extended state and the operator releases the pressure plate to lose pressure, the elastic tension of the tension spring 36 itself restores the wear thickness measuring rod 32 to its original position.

[0085] The specific working process of the skateboard thickness measurement component is as follows:

[0086] The wear thickness measuring head 31 is attached to the lower surface of the carbon slide board. The operator presses the pressure plate 34 by hand to make the wear thickness measuring rod 32 contact the upper surface of the carbon slide board. The displacement sensor 35 reads the measurement value. The operator releases the pressure plate 34 by hand, and the tension of the tension spring 36 retracts the wear thickness measuring rod 32.

[0087] In some feasible embodiments, based on the above-mentioned solution, a groove is provided on the pressure plate, and a pin is provided on the wear thickness measuring rod, and the pin is driven by the groove to extend the wear thickness measuring rod.

[0088] For example, Figure 3 As shown, a groove 341 is provided on the pressure plate 34, and the groove 341 is arc-shaped as a whole. The pin provided on the wear thickness measuring rod 32 matches the groove. When the pin is in the groove 341, the pressure plate 34 is pressed, so that the pin slides in the groove 341, thereby causing the wear thickness measuring rod 32 to be displaced.

[0089] In some feasible embodiments, based on the above-mentioned solution, a first magnet is provided on the wear thickness measuring rod, and the displacement sensor is installed on the fixed middle frame close to the first magnet.

[0090] It can be understood that the first magnet is used to cooperate with the displacement sensor for measurement. When the wear thickness measuring rod is extended, the first magnet and the displacement sensor are displaced, and the displacement sensor outputs a measurement value.

[0091] In some feasible embodiments, based on the above scheme, the lifting bow time measurement assembly includes: a suction cup, an angle sensor and an angle sensor mounting body;

[0092] The angle sensor is arranged inside the angle sensor installation body, the angle sensor installation body is installed on the main body, and is communicatively connected with the smart terminal;

[0093] The suction cup is mounted on the surface of the angle sensor mounting body.

[0094] For example, Figure 4 As shown, the lifting bow time measurement assembly includes two suction cups 41, an angle sensor and an angle sensor installation body 42. The angle sensor installation body 42 is arranged on the main body 1, the two suction cups 41 are arranged on the surface of the angle sensor installation body 42, and the angle sensor is arranged inside the angle sensor installation body 42. Figure 4 Not shown in the figure, the angle sensor has a communication interface, through which it can communicate with the intelligent terminal 5.

[0095] When measuring, the pantograph raising and lowering time measurement component can be removed from the main body 1 and fixed on the pantograph's swing arm via the suction cup 41. When the pantograph's swing arm rises and falls into place, the angle of the angle sensor installed in the angle sensor mounting body 42 will change, and the time for raising and lowering the pantograph can be calculated using the changed angle.

[0096] In some feasible embodiments, based on the above solution, the lifting bow time measurement assembly further includes: a second magnet;

[0097] The second magnet is mounted on the angle sensor mounting body.

[0098] It can be understood that the second magnet is used to make the pantograph time measurement component adsorbed on the pantograph when in use.

[0099] In some feasible embodiments, based on the aforementioned solution, a camera assembly is further provided on the main body, and the camera assembly is communicatively connected to the smart terminal.

[0100] For example, Figure 1As shown, a camera assembly 8 is also provided on the main body 1, through which video recording and the like can be performed.

[0101] It is understandable that the camera assembly 8 can be a part of the smart terminal 5 or an independent component. When it is an independent component, the camera assembly 8 is communicatively connected with the smart terminal 5.

[0102] In summary, the pantograph multi-parameter comprehensive measuring instrument provided in the embodiment of the present application has the following characteristics:

[0103] Accurate measurement of key pantograph parameters is achieved by integrating multiple sensors;

[0104] Based on the intelligent terminal as the core functional module, the convenience and intelligence level of equipment use are improved;

[0105] The measurement accuracy of slide plate wear reaches ±0.2mm, the measurement resolution of bow raising pressure reaches ±0.2N, and the measurement accuracy of bow raising and lowering time reaches ±1s;

[0106] Able to record measurement data in real time and support uploading data to the server for further analysis and processing;

[0107] It is suitable for pantographs of DSA series, TSG series, LV series and CX series, and can meet the inspection requirements of different vehicle models and pantograph types.

[0108] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. It should be understood that the present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A pantograph multi-parameter comprehensive measuring instrument, characterized in that: include: Main body, pressure measurement component, slide plate thickness measurement component, bow lifting time measurement component and intelligent terminal; The pressure measuring assembly is arranged at one end of the main body and is used to measure the pantograph raising pressure; A handle is provided at the other end of the main body, and the lifting bow time measurement component is detachably provided on the main body and close to the handle; The slide plate thickness measuring assembly is arranged on the side of the main body and is used to measure the thickness of the carbon slide plate on the pantograph; The smart terminal is arranged on the main body, and the smart terminal is respectively connected to the pressure measurement component, the slide plate thickness measurement component and the bow lifting time measurement component for displaying the measured values.

2. The pantograph multi-parameter comprehensive measuring instrument according to claim 1, characterized in that: The pressure measurement assembly includes: a pressure hook and a pressure sensor; The pressure hook is arranged at one end of the main body; The pressure sensor is arranged inside the main body, and the pressure hook is connected to the pressure sensor; The pressure sensor is communicatively connected to the smart terminal.

3. The pantograph multi-parameter comprehensive measuring instrument according to claim 2, characterized in that: A hook protection shell is arranged outside the pressure hook.

4. The pantograph multi-parameter comprehensive measuring instrument according to claim 3, characterized in that: The slide plate thickness measuring assembly comprises: a wear thickness measuring head, a wear thickness measuring rod, a fixed middle frame, a pressure plate, a displacement sensor and a tension spring; The wear thickness measuring head is installed on the hook protective shell, located at the end of the pressure hook, arranged opposite to the wear thickness measuring rod, and used to clamp the carbon slide plate; The pressing plate is fixed on the fixed middle frame and is in sliding contact with the wear thickness measuring rod; The wear thickness measuring rod is connected to the fixed middle frame by a clearance fit all around; One end of the tension spring is connected to the wear thickness measuring rod, and the other end is connected to the fixed middle frame; The displacement sensor is mounted on the fixed middle frame and is used to measure the displacement of the wear thickness measuring rod; The displacement sensor is communicatively connected with the smart terminal; The wear thickness measuring rod is extended by pressing the pressure plate, and the extended wear thickness measuring rod is retracted by the tension spring.

5. The pantograph multi-parameter comprehensive measuring instrument according to claim 4, characterized in that: The pressure plate is provided with a groove, and the wear thickness measuring rod is provided with a pin, and the wear thickness measuring rod is extended by driving the pin through the groove.

6. The pantograph multi-parameter comprehensive measuring instrument according to claim 4, characterized in that: The wear thickness measuring rod is provided with a first magnet, and the displacement sensor is installed on the fixed middle frame close to the first magnet.

7. The pantograph multi-parameter comprehensive measuring instrument according to claim 1, characterized in that: The lifting bow time measurement assembly comprises: a suction cup, an angle sensor and an angle sensor mounting body; The angle sensor is arranged inside the angle sensor installation body, the angle sensor installation body is installed on the main body, and is communicatively connected with the smart terminal; The suction cup is mounted on the surface of the angle sensor mounting body.

8. The pantograph multi-parameter comprehensive measuring instrument according to claim 7, characterized in that: The lifting bow time measurement assembly further includes: a second magnet; The second magnet is mounted on the angle sensor mounting body.

9. The pantograph multi-parameter comprehensive measuring instrument according to claim 1, characterized in that: The main body is also provided with a camera assembly, and the camera assembly is communicatively connected with the smart terminal.