Device for measuring micro-deformation stress of cylinder structure

Abstract

The utility model provides a micro-deformation stress measurement device for a cylinder structure, which relates to the technical field of stress measurement and comprises a clamp tool, a measurement grating ruler and a multi-channel full-digital measurement controller. The clamp tool is used for fixing a to-be-measured structure on the column body, the measuring grating ruler is fixed to the position, adjacent to the to-be-measured structure, of the column body, and the measuring grating ruler is electrically connected with the multi-channel full-digital measuring controller. According to the utility model, the real-time bearing capacity of the stress shaft and the structure can be accurately acquired and measured by measuring the tiny deformation of the stress shaft of the cylinder, and the precision and the reliability are high; the device can accurately measure the actual stress condition of the cylinder, can detect the stress balance of a plurality of stressed cylinders of the same mechanical structure at the same time, can be applied to the multi-target force loading balance measurement occasion, and is convenient to install and high in operability.

Description

Technical Field

[0001] The utility model relates to the technical field of force measurement, in particular to a column structure micro-deformation force measurement device. Background Art

[0002] In the fields of metallurgy, machinery, plastic processing, construction, etc., the stress condition of the column structure of mechanical equipment is directly related to product quality, production stability and safety. However, the existing force measurement methods are often not accurate enough to meet the requirements of force value accuracy detection and real-time monitoring and early warning. Therefore, it is of great significance to develop a high-accuracy and high-stability column micro-deformation force measurement device. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a column structure micro-deformation force measurement device, which can accurately collect and calculate the real-time bearing capacity of the force axis and the structure by measuring the tiny deformation of the force axis of the column, and has high precision and high reliability.

[0004] In order to achieve the above technical purpose, the utility model provides a column structure micro-deformation force measurement device, including: a fixture, a measuring grating ruler and a multi-channel full-digital measurement controller;

[0005] The fixture is used to fix the structure to be measured on the column, the measuring grating ruler is fixed at a position adjacent to the column and the structure to be measured, and the measuring grating ruler is electrically connected to the multi-channel full-digital measurement controller.

[0006] Preferably, the fixture comprises a ring frame, a guide column and a locking rod;

[0007] A first through hole is formed between the top surface of the ring frame and the bottom surface of the ring frame, and the guide column is inserted into the first through hole. A second through hole is formed between the front side surface of the ring frame and the rear side surface of the ring frame, and the locking rod is inserted into the second through hole.

[0008] Preferably, the number of the first through holes is two.

[0009] Preferably, the two first through holes are arranged on the same horizontal line.

[0010] Preferably, the number of the second through holes is two.

[0011] Preferably, the two second through holes are arranged on the same horizontal line.

[0012] Preferably, the ring frame, the locking rod and the guide column are all provided in plurality.

[0013] Preferably, the multi-channel all-digital measurement controller includes an Ethernet communication port, a touch screen, a power cord, an ARM control unit, a mainboard integrated displacement channel, a grating ruler channel and an RS232 interface.

[0014] Preferably, the power supply requirement of the multi-channel all-digital measurement controller is 220V±10%, and the multi-channel all-digital measurement controller has a resolution of up to ±1000000 code and a sampling frequency of 1000Hz.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a micro-deformation force measuring device for a column structure, which can accurately collect and calculate the real-time bearing capacity of the force-bearing axis and the structure by measuring the tiny deformation of the force-bearing axis of the column, and has high precision and high reliability; the utility model studies the strain generated by the strain sensor, establishes the corresponding strain-stress algorithm, and accurately calculates the force; the strain sensor is not directly installed on the force-bearing axis of the pull rod, and only needs to measure the micro-strain of the pull rod to measure the stress, which solves the problem that on-site measurement is difficult or even impossible to install and measure, and develops an automatic stress-strain testing device, which uses the output signal generated by the strain gauge, converts it into the strain through signal acquisition and signal amplifier, and measures the stress according to the test instrument The strain and related parameters of the measured volume can be accurately calculated to calculate the force; the high-precision measuring grating scale and high-stability multi-channel fully digital measuring controller are used to make the accuracy level error of the measurement result reach ≤±0.5%; the measurement method will not have any impact on the measured structure, nor will it introduce additional errors; the measurement capability reaches a high level of accuracy, the measuring device can be used repeatedly, and multiple sensor measurement values ​​can be detected at the same time to monitor the force situation. It can not only accurately measure the actual force situation of multiple columns at the same time, but also can simultaneously detect the force balance of multiple force-bearing columns in the same mechanical structure, timely discover potential safety hazards and take corresponding adjustment measures; it can be applied to multi-target force loading balance measurement occasions, easy to install, and highly operable. The device is not only suitable for force measurement of large press structures, but also can be widely used in structural force measurement of other similar equipment. This device can be traced back to force measurement standards or length measurement standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a front view of the column structure micro-deformation force measuring device described in the utility model;

[0018] Figure 2 It is a top view of the column structure micro-deformation force measurement device described in the utility model;

[0019] Figure 3 This is a hardware diagram of the multi-channel all-digital measurement controller described in the utility model;

[0020] Figure 4 This is the operation flow chart of the multi-channel all-digital measurement controller described in the utility model;

[0021] Figure 5 This is a communication diagram between the multi-channel all-digital measurement controller and PC software described in the utility model.

[0022] In the figure: 1, column; 2, guide column; 3, rod frame; 4, first through hole; 5, locking rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0024] like Figure 1 to Figure 5 As shown, the utility model provides a column 1 structure micro-deformation force measurement device, including: a fixture, a measuring grating ruler and a multi-channel full-digital measurement controller;

[0025] The fixture is used to fix the structure to be measured on the column 1, the measuring grating ruler is fixed at a position adjacent to the column 1 and the structure to be measured, and the measuring grating ruler is electrically connected to the multi-channel full-digital measurement controller.

[0026] Furthermore, the fixture comprises a ring frame 3, a guide column 2 and a locking rod 5, and the calibration distance is determined according to the size of the vertical axis. The gapless transmission is adopted, the measurement is stable, the measurement is direct and the accuracy is high. The guide column 2 is used for positioning and guiding to ensure the coaxiality of the upper and lower chucks;

[0027] A first through hole 4 is formed between the top surface of the ring frame 3 and the bottom surface of the ring frame 3 , and the guide column 2 is inserted into the first through hole 4 . A second through hole is formed between the front side surface of the ring frame 3 and the rear side surface of the ring frame 3 , and the locking rod 5 is inserted into the second through hole.

[0028] Furthermore, the number of the first through holes 4 is two.

[0029] Furthermore, the two first through holes 4 are arranged on the same horizontal line.

[0030] Furthermore, the number of the second through holes is two.

[0031] Furthermore, the two second through holes are arranged on the same horizontal line.

[0032] Furthermore, the ring frame 3, the locking rod 5, and the guide column 2 are all provided in plurality.

[0033] Furthermore, the multi-channel all-digital measurement controller includes an Ethernet communication port, a touch screen, a power cord, an ARM control unit, a mainboard integrated displacement channel, a grating ruler channel and an RS232 interface.

[0034] Furthermore, the power supply requirement of the multi-channel all-digital measurement controller is 220V±10%, and the multi-channel all-digital measurement controller has a resolution of up to ±1000000 code and a sampling frequency of 1000Hz.

[0035] The utility model also proposes a method for measuring the micro-deformation force of a column 1 structure, which is applied to the micro-deformation force measuring device of the column 1 structure, and comprises:

[0036] S1, fixing the structure to be measured on the column 1 by the fixture, and fixing the measuring grating ruler at a position adjacent to the column 1 and the structure to be measured;

[0037] S2, when the structure to be measured is subjected to an external load, the column 1 will be slightly deformed, and the slight deformation data of the column 1 is measured by the measuring grating ruler;

[0038] S3, the multi-channel full-digital measurement controller collects and processes the tiny deformation data measured by the measuring grating ruler, and calculates the real-time bearing capacity of the structure to be measured according to the reading of the measuring grating ruler and the deformation of the column 1 under the load.

[0039] In this embodiment, there are 4 sets of fixtures, 8 grating rulers, and 1 set of multi-channel full-digital measurement controller.

[0040] Fix the fixture and grating ruler on the stressed shaft to collect the deformation of the stressed shaft. Before collecting the deformation, input the gauge length, elastic modulus, and stressed shaft diameter to measure the stressed state of the stressed shaft in real time.

[0041] The measuring grating ruler is a single set of double-sided grating ruler. The measuring grating ruler is a high-precision measuring device, and the deformation value it measures is true and reliable. Due to the use of double-sided measurement, the influence of factors such as thermal expansion and mechanical deformation of the grating ruler itself on the measurement accuracy can be effectively eliminated.

[0042] In addition, the single-group double-sided grating ruler also has the characteristic of no drift for a long time. It adopts high-quality optical components and stable mechanical structure, and can maintain stable measurement performance under various environmental conditions. At the same time, the single-group double-sided grating ruler also adopts advanced signal processing and data processing technology, which can effectively suppress noise and interference, and further improve measurement accuracy and stability.

[0043] The fully digital measurement controller is a high-performance measurement device based on ARM chip, using Ethernet port communication, with 8 measurement channels, 4 sets of single-group double-sided grating rulers can measure simultaneously or separately. The controller is equipped with a LCD touch screen, easy and intuitive to operate, and can automatically archive after the test, and automatically calculate the performance data, greatly improving the test efficiency and accuracy.

[0044] The power supply requirement of the controller is 220V±10%, 50Hz, 1kW, which can adapt to the power supply configuration of most industrial applications. With a resolution of up to ±1000000 and a sampling frequency of 1000Hz, more accurate test data can be obtained.

[0045] High-speed transmission rate can quickly transfer test data to the host computer or storage device, thus ensuring the real-time and accuracy of the test data.

[0046] In order to achieve reliable connection and data transmission with measurement, ensure the compatibility between hardware and software, and develop corresponding drivers, realize the integration of software and hardware, and automatically collect detection data.

[0047] In the software architecture design phase, we adopted a modular design concept and divided the software into data acquisition module, data processing and analysis module, report generation module, etc. This design approach improves the maintainability and scalability of the software.

[0048] The utility model provides a micro-deformation force measuring device for a column structure, which can accurately collect and calculate the real-time bearing capacity of the force axis and the structure by measuring the micro-deformation of the force axis of the column, and has high precision and high reliability. The utility model studies and utilizes the strain generated by the strain sensor, establishes a corresponding strain-stress algorithm, and accurately calculates the force. The strain sensor is not directly installed on the force axis of the pull rod, and only needs to measure the micro-strain of the pull rod to measure the stress, thereby solving the problem that on-site measurement is difficult or even impossible to install and measure, and develops an automatic stress-strain testing device, utilizes the output signal generated by the strain gauge, converts it into a strain through signal acquisition and signal amplifier, and accurately calculates the force according to the strain measured by the tester and related parameters; the measuring ability reaches a high accuracy level, the measuring device can be used repeatedly, and the measurement values ​​of multiple sensors can be detected at the same time to monitor the force situation, which can not only accurately measure the actual force situation of multiple columns at the same time, but also can detect the force balance of multiple force columns of the same mechanical structure at the same time, timely discover potential safety hazards and take corresponding adjustment measures; it can be applied to multi-target force loading balance measurement occasions, is easy to install, and has strong operability. The device is not only suitable for force measurement of large press structures, but can also be widely used in structural force measurement of other similar equipment. The device can be traced back to force measurement standards or length measurement standards.

[0049] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and are not to be understood as indicating or implying relative importance.

[0050] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model. They should all be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A device for measuring micro-deformation force of a column structure, characterized in that: include: Fixtures, measuring grating rulers and multi-channel fully digital measuring controllers; The fixture is used to fix the structure to be measured on the column, the measuring grating ruler is fixed at a position adjacent to the column and the structure to be measured, and the measuring grating ruler is electrically connected to the multi-channel full-digital measurement controller.

2. The column structure micro-deformation force measurement device according to claim 1 is characterized in that: The fixture tooling includes a ring frame, a guide column and a locking rod; A first through hole is formed between the top surface of the ring frame and the bottom surface of the ring frame, and the guide column is inserted into the first through hole. A second through hole is formed between the front side surface of the ring frame and the rear side surface of the ring frame, and the locking rod is inserted into the second through hole.

3. The column structure micro-deformation force measurement device according to claim 2 is characterized in that: The number of the first through holes is two.

4. The column structure micro-deformation force measurement device according to claim 3 is characterized in that: The two first through holes are arranged on the same horizontal line.

5. The column structure micro-deformation force measurement device according to claim 2, characterized in that: The number of the second through holes is two.

6. The column structure micro-deformation force measurement device according to claim 5, characterized in that: The two second through holes are arranged on the same horizontal line.

7. The column structure micro-deformation force measurement device according to claim 2, characterized in that: The ring frame, the locking rod and the guide column are all provided in plurality.

8. The column structure micro-deformation force measurement device according to claim 1, characterized in that: The multi-channel all-digital measurement controller includes an Ethernet communication port, a touch screen, a power cord, an ARM control unit, a mainboard integrated displacement channel, a grating ruler channel and an RS232 interface.

9. The column structure micro-deformation force measurement device according to claim 8, characterized in that: The power supply requirement of the multi-channel full-digital measurement controller is 220V±10%. The multi-channel full-digital measurement controller has a resolution of up to ±1000000 codes and a sampling frequency of 1000Hz.

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