Automatic calibration device for displacement meter

Abstract

The utility model discloses an automatic calibration device for a displacement meter. The automatic calibration device comprises a sliding track, a sliding part, a driver and a grating ruler, the sliding part is arranged on the sliding rail and is used for fixedly arranging a displacement meter; the driver is arranged on the sliding rail and is used for driving the sliding part to move on the sliding rail; the grating ruler comprises a main grating and a grating head moving relative to the main grating, the main grating is fixedly arranged on the sliding rail, and the grating head is fixedly arranged on the sliding part. Therefore, through an automatic control mode, the high-precision linear module is constructed based on the ball screw and the linear sliding rail, the high-precision grating ruler is used as a key element for displacement measurement, the relative movement between the main grating and the grating head can accurately reflect the displacement amount of the sliding part, and then an accurate displacement value is obtained. Therefore, the device can accurately obtain the current displacement of the displacement meter in real time, and the calibrated product (displacement meter) is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to an automated calibration device for a displacement gauge. Background Technology

[0002] In existing technologies, sensors such as displacement gauges and crack gauges are widely used in fields such as industrial manufacturing, intelligent transportation, and building monitoring. Their calibration accuracy directly affects the accuracy and reliability of the measurement results. For example, displacement gauges are used in roadbeds, tunnels, and bridges, primarily for soil settlement observation, crack monitoring, and multi-point displacement for monitoring the loosened zone of surrounding rock. Furthermore, in the safety monitoring of structures such as dams, bridges, tunnels, and buildings, high-precision strain sensors and displacement gauges can monitor structural deformation in a timely and accurate manner, ensuring the safe operation of the structures.

[0003] To ensure the accuracy of the displacement gauge, it needs to be calibrated. Users need to use methods such as height gauge calibration or manual calibration, which are inefficient. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automated calibration device for displacement gauges, which can improve the efficiency of calibrating displacement gauges.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An automated calibration device for a displacement meter includes: a sliding rail, a sliding part, a driver, and a grating ruler; the sliding part is disposed on the sliding rail and is used to fix the displacement meter; the driver is disposed on the sliding rail and is used to drive the sliding part to move on the sliding rail; the grating ruler includes a main grating and a grating head that moves relative to the main grating, the main grating is fixedly disposed on the sliding rail, and the grating head is fixedly disposed on the sliding part.

[0007] The beneficial effects of this invention are as follows: The automated calibration device for displacement gauges in this application, through automated control, utilizes a high-precision linear module constructed based on a ball screw and linear guide rail, and employs a high-precision grating ruler as the key component for displacement measurement. The relative motion between the main grating and the grating head accurately reflects the displacement of the sliding part, thereby obtaining precise displacement values. This enables the device to acquire the current displacement of the displacement gauge in real time and accurately, allowing the calibrated product (displacement gauge) to maintain accuracy while improving efficiency through automated control.

[0008] Preferably, a displacement gauge fixing seat is provided on the sliding part, the displacement gauge fixing seat is fixed to the sliding part, and a placement groove is provided at the end of the displacement gauge fixing seat away from the sliding part, the placement groove is used to fix the displacement gauge.

[0009] Specifically, the placement groove includes a through hole and a countersunk hole; the countersunk hole is located above the through hole, and the diameter of the through hole is smaller than the diameter of the countersunk hole in the countersunk hole, and the bottom surface of the countersunk hole forms a stepped surface on the through hole.

[0010] Preferably, there are multiple placement slots.

[0011] Specifically, the displacement gauge mounting base includes a first plate and a second plate. The first plate is connected to the sliding part, and the second plate is arranged horizontally. Multiple placement slots are evenly arranged on the second plate in the horizontal direction.

[0012] Specifically, the driver is configured as a ball screw mechanism, which includes a screw and a nut sleeved on the screw; the nut is fixedly connected to the sliding part, and the screw is connected to a motor, which drives the screw to rotate.

[0013] Preferably, the accuracy of the grating ruler is not less than 0.5 mm. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an automated calibration device for displacement gauges according to some embodiments of this application;

[0015] Figure 2 This is a schematic diagram from another angle showing the structure of an automated calibration device for displacement gauges according to some embodiments of this application;

[0016] In the picture:

[0017] 100-Displacement gauge automated calibration device;

[0018] 110 - Sliding rail, 111 - Base;

[0019] 120-Sliding part, 121-Displacement gauge mounting base, 1211-Placement groove, 1212-Fasting bolt, 1213-First plate, 1214-Second plate;

[0020] 130 - Driver, 131 - Leadscrew;

[0021] 140-grating ruler;

[0022] 150 - Motor;

[0023] 160-Displacement gauge. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See Figures 1-2 This utility model provides a technical solution:

[0026] An automated calibration device 100 for a displacement gauge includes a sliding rail 110, a sliding part 120, a driver 130, and a grating ruler 140.

[0027] refer to Figure 1 As shown, the sliding rail 110 is constructed as a straight rail. A base 111 is provided at the bottom of the sliding rail 110 to support the sliding rail 110. The sliding part 120 is provided on the sliding rail 110 and is slidably connected to the sliding rail 110 so as to move along a straight line. A displacement meter 160 is fixedly provided on the side of the sliding part 120 away from the sliding rail 110.

[0028] For example, such as Figure 1 As shown, a displacement gauge fixing seat 121 is provided on the sliding part 120. The displacement gauge fixing seat 121 is fixed to the sliding part 120 by bolts or other fixing components. A placement groove 1211 is provided at the end of the displacement gauge fixing seat 121 away from the sliding part 120. The placement groove 1211 is used to fix the displacement gauge 160.

[0029] Specifically, the placement groove 1211 includes a through hole and a countersunk hole (not shown in the figure). The countersunk hole is located above the through hole, and the diameter of the through hole is smaller than the diameter of the countersunk hole. This creates a stepped surface on the bottom of the countersunk hole above the through hole. This stepped surface can be used to place the end of the displacement gauge 160, ensuring that the displacement gauge 160 can be stably placed in the placement groove 1211. In some examples, to ensure that the displacement gauge 160 can be stably placed in the placement groove 1211, a fastening bolt 1212 is provided next to the placement groove 1211. The fastening bolt 1212 ensures that the groove wall of the placement groove 1211 is tightly fixed to the displacement gauge 160.

[0030] The actuator 130 is disposed on the sliding rail 110, which can be any linear rail such as a linear guide rail, and is used to drive the sliding part 120 to move on the sliding rail 110. In some examples, the actuator 130 is constructed as a ball screw 131 mechanism, including: a screw 131 and a nut (not shown in the figure) sleeved on the screw 131, the nut moving linearly along the screw 131. Specifically, the nut is fixedly connected to the sliding part 120, and the screw 131 is connected to a motor 150. The motor 150 outputs power to drive the screw 131 to rotate, thereby causing the nut to produce linear motion.

[0031] The grating ruler 140 includes a main grating and a grating head (not shown) that moves relative to the main grating. The main grating is fixedly mounted on the sliding rail 110, and the grating head is fixedly mounted on the sliding part 120. Thus, when the motor 150 starts and outputs power, the lead screw 131 begins to rotate under the drive of the motor 150. Since the nut is sleeved on the lead screw 131 and fixedly connected to the sliding part 120, the nut will move linearly along the axial direction of the lead screw 131 as the lead screw 131 rotates. This linear motion is directly transmitted to the sliding part 120, causing the sliding part 120 to move linearly along the sliding rail 110. During the movement of the sliding part 120, the grating head fixedly mounted on it also moves accordingly. Since the grating head moves relative to the main grating, and the main grating is fixedly mounted on the sliding rail 110, the movement of the grating head constitutes a relative motion relative to the main grating. This relative motion enables the grating ruler 140 to accurately measure the displacement of the sliding part 120, allowing the grating ruler 140 to generate an electrical signal based on the relative displacement between the grating head and the main grating, and then obtain the displacement value through circuit processing.

[0032] Furthermore, the grating ruler 140 display provides real-time and accurate display of the current displacement of the sliding part 120 (i.e., displacement gauge 160), offering operators an intuitive and reliable reference. Based on the precise displacement data provided by the grating ruler 140 display, operators can accurately calibrate the displacement gauge 160, ensuring the accuracy and reliability of its measurement results.

[0033] The above calibration process is achieved based on the grating ruler 140, and a coupling can be used for connection. Imported bearings are used for lubrication at key points in the ball screw 131 to ensure uniform rotation and accuracy, so that the lifting accuracy of the equipment can reach 0.05mm, which fully meets the various usage requirements.

[0034] It is understood that the automated calibration device for displacement gauges in this application embodiment, through automated control, utilizes a high-precision linear module constructed based on ball screws and linear guides, and employs a high-precision grating ruler as the key component for displacement measurement. The relative motion between the main grating and the grating head accurately reflects the displacement of the sliding part, thereby obtaining precise displacement values. This enables the device to acquire the current displacement of the displacement gauge in real time and accurately, allowing the calibrated product (displacement gauge) to maintain accuracy while improving efficiency through automated control.

[0035] In some embodiments, the placement slot 1211 includes multiple slots to calibrate multiple displacement gauges 160 simultaneously, which significantly improves efficiency compared to the prior art where manual calibration or other methods can only calibrate a single displacement gauge.

[0036] refer to Figure 2 As shown, the displacement gauge mounting base 121 includes a first plate 1213 and a second plate 1214. The first plate 1213 is connected to the sliding part 120 by bolts. The second plate 1214 extends from the first plate 1213 in a direction away from the sliding part 120 and is arranged horizontally relative to the first plate 1213. A plurality of placement slots 1211 are evenly provided on the second plate 1214 in the horizontal direction.

[0037] In this way, the stepped surfaces of the multiple placement slots 1211 on the horizontally arranged second plate 1214 are all at the same height and parallel to each other, ensuring that the displacement gauges 160 fixed in each placement slot 1211 are at the same horizontal height after installation. When multiple displacement gauges 160 are placed in these placement slots 1211 at the same height and securely fixed with fastening bolts 1212, since all displacement gauges 160 are at the same height, they can respond to external displacement changes simultaneously and synchronously during subsequent calibration, generating basically consistent measurement signals.

[0038] In use, after assembling the sliding part 120 and the displacement gauge mounting base 121, to ensure the measurement accuracy of the displacement gauge 160 during the calibration process, it is necessary to use an inclinometer or level to calibrate the entire machine for horizontality and ensure that the entire machine is perpendicular to the ground. The specific operation is as follows:

[0039] First, using an inclinometer or level, place it on the displacement gauge mounting base 121 or a key support component of the machine. Read the readings on the inclinometer or level to determine if the machine is level. If the readings are inaccurate, adjust the height of the base 111 at the bottom of the sliding rail 110 or the installation position of the displacement gauge mounting base 121 to ensure the machine is level. Simultaneously, ensure the machine is perpendicular to the ground.

[0040] Then, the power is turned on, and the motor 150 is started, causing the lead screw 131 to rotate, which in turn drives the nut and sliding part 120 to move on the sliding rail 110. The sliding part 120 is moved to the calibration starting position, at which point the relative displacement between the grating head and the main grating is zero, and the displacement displayed on the grating ruler 140 should also be zero. According to the calibration requirements, the sliding part 120 is driven to move along the sliding rail 110 by controlling the motor 150, applying a known displacement. During the movement, the grating head moves accordingly, generating a relative displacement with the main grating. The grating ruler 140 generates an electrical signal based on this relative displacement, and the displacement value is obtained through circuit processing. The displacement displayed on the grating ruler 140 is recorded and compared with the known applied displacement. If they match, the measurement result of the displacement meter 160 is accurate; if there is a deviation, the displacement meter 160 needs to be calibrated or adjusted.

[0041] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A displacement meter automated rating device, characterized by, The application relates to a displacement meter fixing device for a grating ruler. The device comprises: a sliding rail and a sliding part arranged on the sliding rail, the sliding part being used for fixing a displacement meter; a driver arranged on the sliding rail and used for driving the sliding part to move on the sliding rail; 2. The displacement meter automated rating device of claim 1, wherein, a grating ruler comprising a main grating and a grating head moving relative to the main grating, the main grating being fixedly arranged on the sliding rail, and the grating head being fixedly arranged on the sliding part.

3. The displacement meter automated rating device of claim 2, wherein, A displacement meter fixing seat is arranged on the sliding part, the displacement meter fixing seat being fixed to the sliding part, one end of the displacement meter fixing seat away from the sliding part being provided with a placing groove, and the placing groove being used for fixing the displacement meter. The placing groove comprises a through hole part and a counterbore part.

4. The displacement meter automated rating device of claim 3, wherein, The counterbore part is located above the through hole part, the aperture of the through hole part is smaller than the diameter of the counterbore of the counterbore part, and the bottom surface of the counterbore part forms a stepped surface on the through hole part.

5. A displacement meter automated rating device according to claim 3 or 4, wherein, The placing groove is multiple.

6. The displacement meter automated rating device of claim 1, wherein, The displacement meter fixing seat comprises a first plate and a second plate, the first plate being connected to the sliding part, and the second plate being horizontally arranged and uniformly provided with multiple placing grooves in the horizontal direction. The driver is configured as a ball screw mechanism, the ball screw mechanism comprising a screw rod and a nut sleeved on the screw rod.

7. The displacement meter automated rating device of claim 1, wherein, The nut is fixedly connected to the sliding part, and the screw rod is connected with a motor, and the motor is used for driving the screw rod to rotate. The precision of the grating ruler is not less than 0.5 mm.

Images