A seamless cylinder verticality and straightness automatic detection device

Abstract

The utility model relates to detection equipment technical field especially, is involved in a kind of seamless gas cylinder perpendicularity and straightness automatic detection device, including base and the detection mechanism and slewing mechanism being arranged on base, slewing mechanism is used to place for seamless gas cylinder and provides power for the rotation of seamless gas cylinder, detection mechanism includes lifting drive assembly and detection sensor, lifting drive assembly and base fixed connection, the output end of lifting drive assembly and detection sensor transmission connection, lifting drive assembly is used to provide power for reciprocating movement along the axial direction of seamless gas cylinder, by the collaborative work of lifting drive assembly and slewing mechanism, the automatic rotation of seamless gas cylinder and the axial movement of detection sensor are realized, without manual intervention, significantly improve the detection efficiency;Non-contact measurement is carried out using detection sensor, combined with PLC control algorithm, eliminates artificial error, ensures the accuracy and reliability of perpendicularity and straightness detection data.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an automatic testing device for the verticality and straightness of seamless gas cylinders. Background Technology

[0002] Currently, gas cylinder inspection agencies primarily rely on traditional tools (such as 300mm steel rulers, 2000mm steel rulers, 250mm vernier calipers, and right-angle rulers) for manual measurement to inspect the perpendicularity and straightness of seamless gas cylinders. This method has significant drawbacks: First, the measurement results are greatly affected by the operator's subjective factors (such as measurement skills and work attitude), leading to poor data consistency, low accuracy, and a high risk of misjudgment. Second, the manual measurement process is cumbersome, time-consuming, and labor-intensive, making it difficult to meet the needs of high-efficiency, large-volume inspection. Finally, traditional tools cannot achieve automated data acquisition and processing, hindering the standardization and intelligent development of gas cylinder inspection. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the problem that the existing gas cylinder inspection agencies mainly rely on traditional tools for manual measurement to detect the verticality and straightness of seamless gas cylinders, an automatic detection device for the verticality and straightness of seamless gas cylinders is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an automatic detection device for the verticality and straightness of a seamless gas cylinder, including a base and a detection mechanism and a rotation mechanism arranged on the base. The rotation mechanism is used to place the seamless gas cylinder and provide power for the rotation of the seamless gas cylinder. The detection mechanism includes a lifting drive assembly and a detection sensor. The lifting drive assembly is fixedly connected to the base, and the output end of the lifting drive assembly is drivenly connected to the detection sensor. The lifting drive assembly is used to provide power for reciprocating movement along the axial direction of the seamless gas cylinder. Through the coordinated work of the lifting drive assembly and the rotation mechanism, the automatic rotation of the seamless gas cylinder and the axial movement of the detection sensor are realized without manual intervention, which significantly improves the detection efficiency. The detection sensor is used for non-contact measurement, combined with PLC control algorithm, which eliminates human error and ensures the accuracy and reliability of the verticality and straightness detection data.

[0005] The device further includes a rotary mechanism comprising a rotary stepper motor, a reducer, and a rotary base. The base has a mounting cavity, and the rotary mechanism is arranged within the mounting cavity. The placement surface of the rotary base is flush with the top surface of the base. The rotary stepper motor is fixedly connected to the base, and the output end of the rotary stepper motor is drivenly connected to the input end of the reducer. The output end of the reducer is drivenly connected to the rotary base. The rotary stepper motor is used to provide power for the rotation of the rotary base.

[0006] To address the severe friction and wear issues during the rotation of the rotary base, a further improvement is made by connecting the rotary base and the reducer via a planar thrust bearing and a ball bearing.

[0007] To address the challenge of providing high-precision, high-torque speed reduction transmissions and ensuring rotational control of the rotary base, the reducer is further designed as an angular planetary reducer.

[0008] To address the challenge of achieving precise, linear movement of the detection sensor to cover the entire axial direction of the gas cylinder, a lifting drive assembly is further included, comprising a frame, a lifting stepper motor, a lead screw, and a nut seat. The frame and base are fixedly connected, the lead screw and frame are rotatably connected, the lifting stepper motor and frame are fixedly connected, the output end of the lifting stepper motor is driven by the lead screw, the nut seat and lead screw are threadedly connected, and the detection sensor and nut seat are fixedly connected.

[0009] To address the issue of achieving non-contact, high-precision distance measurement and avoiding errors caused by sensor contact with the gas cylinder surface, a further step is to use a laser rangefinder as the detection sensor.

[0010] The beneficial effects of this utility model are as follows: The automatic detection device for the verticality and straightness of a seamless gas cylinder provided by this utility model realizes the automatic rotation of the seamless gas cylinder and the axial movement of the detection sensor through the coordinated work of the lifting drive component and the rotation mechanism, without the need for manual intervention, which significantly improves the detection efficiency; the non-contact measurement using the detection sensor, combined with the PLC control algorithm, eliminates human error and ensures the accuracy and reliability of the verticality and straightness detection data. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a simplified structural diagram of the present invention; Figure 2 This is a detailed structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the testing mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the rotary mechanism of this utility model.

[0013] In the diagram: 1. Base, 2. Detection mechanism, 21. Lifting drive assembly, 211. Frame, 212. Lifting stepper motor, 213. Lead screw, 214. Nut seat, 22. Detection sensor, 3. Rotation mechanism, 31. Rotation stepper motor, 32. Reducer, 33. Rotation base, 34. Surface thrust bearing, 35. Ball bearing. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] like Figure 1 This is a schematic diagram of the structure of this utility model, an automatic detection device for the verticality and straightness of a seamless gas cylinder. It includes a base 1 and a detection mechanism 2 and a rotation mechanism 3 arranged on the base 1. The rotation mechanism 3 is used to place the seamless gas cylinder and provide power for its rotation. The detection mechanism 2 includes a lifting drive assembly 21 and a detection sensor 22. The lifting drive assembly 21 is fixedly connected to the base 1, and its output end is drively connected to the detection sensor 22. The lifting drive assembly 21 provides power for reciprocating movement along the axis of the seamless gas cylinder, realizing automatic rotation of the gas cylinder and axial movement of the detection sensor 22, thereby automating the detection of verticality and straightness, improving detection efficiency and accuracy. Through the coordinated work of the lifting drive assembly 21 and the rotation mechanism 3, automatic rotation of the seamless gas cylinder and axial movement of the detection sensor 22 are achieved without manual intervention, significantly improving detection efficiency. The use of the detection sensor 22 for non-contact measurement, combined with a PLC control algorithm, eliminates human error and ensures the accuracy and reliability of the verticality and straightness detection data.

[0016] The rotary mechanism 3 includes a rotary stepper motor 31, a reducer 32, and a rotary base 33. A mounting cavity is provided on the base 1, and the rotary mechanism 3 is arranged in the mounting cavity. The placement surface of the rotary base 33 is flush with the top surface of the base 1. The rotary stepper motor 31 is fixedly connected to the base 1. The output end of the rotary stepper motor 31 is drivenly connected to the input end of the reducer 32, and the output end of the reducer 32 is drivenly connected to the rotary base 33. The rotary stepper motor 31 is used to provide power for the rotation of the rotary base 33. Through the combination of the rotary stepper motor 31, the reducer 32, and the rotary base 33, a stable and adjustable power output is provided, ensuring that the gas cylinder rotates evenly during the testing process and improving the reliability of data acquisition.

[0017] The rotary base 33 and the reducer 32 are rotatably connected by a planar thrust bearing 34 and a ball bearing 35. The use of planar thrust bearing 34 and ball bearing 35 reduces the frictional resistance of the rotary base 33, achieves smooth rotation, and enhances the durability and stability of the mechanism.

[0018] The reducer 32 is a rotary planetary reducer 32. The use of a rotary planetary reducer provides a higher reduction ratio and transmission accuracy, making the rotary base rotate more smoothly and accurately, adapting to the testing requirements of different gas cylinders, achieving torque and rotational inertia matching, ensuring the smooth operation of the rotary stepper motor 31, and reducing the excavation depth of the ground foundation pit.

[0019] The lifting drive assembly 21 includes a frame 211, a lifting stepper motor 212, a lead screw 213, and a nut seat 214. The frame 211 is fixedly connected to the base 1, the lead screw 213 is rotatably connected to the frame 211, the lifting stepper motor 212 is fixedly connected to the frame 211, the output end of the lifting stepper motor 212 is drivenly connected to the lead screw 213, the nut seat 214 is threadedly connected to the lead screw 213, and the detection sensor 22 is fixedly connected to the nut seat 214. Through the combination of the lifting stepper motor 212, the lead screw 213, and the nut seat 214, high-precision lifting control of the detection sensor 22 is achieved, ensuring the accuracy of the detection point and improving the reliability of the measurement data.

[0020] The detection sensor 22 is a laser rangefinder. Using a laser rangefinder, it can quickly and accurately collect distance changes on the surface of the gas cylinder. Combined with the PLC algorithm, it can accurately determine the perpendicularity and straightness.

[0021] Equipment activation during testing: Input basic parameters such as the length L of the seamless gas cylinder on the touchscreen; Verticality detection: The lifting drive assembly 21 is started, the lifting stepper motor 212 drives the lead screw 213 to rotate, the lead screw 213 drives the nut seat 214 to move up and down, and the nut seat 214 drives the laser range sensor (detection sensor 22) to rise to the specified height; the rotary stepper motor 31 drives the rotary base 33 and the seamless gas cylinder to rotate at a constant speed through the reducer 32. A laser rangefinder sensor collects distance data from the surface of the gas cylinder in real time. The PLC calculates the maximum distance value using an algorithm and compares it with a standard value to determine whether the perpendicularity is up to standard. The results are displayed on the touchscreen in real time.

[0022] Straightness detection: The lifting drive assembly 21 moves the laser range sensor to different height positions on the cylinder axis; the rotary mechanism 3 drives the cylinder to rotate, and the detection sensor 22 collects distance data at multiple positions; the PLC determines whether the straightness is qualified through data analysis (such as least squares method or range calculation), and the result is displayed on the touch screen; After the inspection is completed, the touch screen automatically displays the judgment results (pass or fail) for verticality and straightness, and supports data storage or export.

[0023] Cylinder inspection and judgment process: Start detection: Start the detection system.

[0024] Cylinder placement check: The system first checks whether the cylinder is placed in place. If the cylinder is not placed, the system will issue an "IMI warning" and wait for the cylinder to be placed. If it is placed, the system will proceed to the next step.

[0025] Input cylinder parameters: Input the cylinder length L through the IMI system (the unit may be millimeters or centimeters, depending on the actual system settings).

[0026] Start Measurement: After confirming the parameters, start the testing process.

[0027] Return to initial position: The system controls the lifting drive component 21 and the slewing mechanism 3 to return to their initial positions.

[0028] Initial distance value X is detected: At the initial position, the initial distance value X of the cylinder is detected using the detection sensor 22 (which may represent the distance between the cylinder surface and the reference point).

[0029] The lifting drive assembly 21 rises: the lifting stepper motor 212 drives the nut seat 214 to rise, causing the sensor to move along the height direction of the cylinder.

[0030] Rotation of the rotary mechanism 3: The rotary stepper motor 31 drives the rotary base 33 to rotate, causing the cylinder or sensor to rotate in order to scan the circumferential surface of the cylinder.

[0031] Detecting the maximum distance Y and the minimum distance Z: During the ascent and rotation, the detection sensor 22 continuously detects the distance values ​​and records the maximum value Y and the minimum value Z.

[0032] Calculate perpendicularity and straightness: Verticality = 2 × (YZ) / L (Here, the verticality calculation may reflect the ellipticity or eccentricity of the cylinder; multiplying by 2 may be used for diameter-related calculations.) Straightness = (YX) / L (Straightness calculation may represent the degree of bending of the cylinder along the height direction.) Judgment result: Perpendicularity judgment: If the perpendicularity is greater than 1%, it is judged as unqualified; otherwise, it is qualified.

[0033] Straightness judgment: If the straightness is greater than 0.4% and the value of (Y - X) is greater than 5mm, it is judged as unqualified; otherwise, it is qualified.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A seamless cylinder perpendicularity and straightness automatic detection device, characterized in that, It includes a base (1) and a detection mechanism (2) and a rotation mechanism (3) arranged on the base (1). The rotation mechanism (3) is used to place the seamless gas cylinder and provide power for the rotation of the seamless gas cylinder. The detection mechanism (2) includes a lifting drive assembly (21) and a detection sensor (22). The lifting drive assembly (21) and the base (1) are fixedly connected. The output end of the lifting drive assembly (21) is connected to the detection sensor (22) in a transmission manner. The lifting drive assembly (21) is used to provide power for reciprocating movement along the axial direction of the seamless gas cylinder.

2. The automatic detection device for the perpendicularity and straightness of a seamless cylinder according to claim 1, characterized in that: The rotary mechanism (3) includes a rotary stepper motor (31), a reducer (32), and a rotary base (33). The base (1) has an installation cavity, and the rotary mechanism (3) is arranged in the installation cavity. The placement surface of the rotary base (33) is flush with the top surface of the base (1). The rotary stepper motor (31) is fixedly connected to the base (1). The output end of the rotary stepper motor (31) is connected to the input end of the reducer (32). The output end of the reducer (32) is connected to the rotary base (33). The rotary stepper motor (31) is used to provide power for the rotation of the rotary base (33).

3. The automatic detection device for the perpendicularity and straightness of a seamless cylinder according to claim 2, characterized in that: The rotary base (33) and the reducer (32) are rotatably connected by a planar thrust bearing and a ball bearing.

4. The automatic detection device for perpendicularity and straightness of a seamless gas cylinder according to claim 2, characterized in that: The reducer (32) is a planetary reducer (32).

5. The automatic detection device for the perpendicularity and straightness of a seamless cylinder according to claim 1, characterized in that: The lifting drive assembly (21) includes a frame (211), a lifting stepper motor (212), a lead screw (213), and a nut seat (214). The frame (211) is fixedly connected to the base (1), the lead screw (213) is rotatably connected to the frame (211), the lifting stepper motor (212) is fixedly connected to the frame (211), the output end of the lifting stepper motor (212) is drivenly connected to the lead screw (213), the nut seat (214) is threadedly connected to the lead screw (213), and the detection sensor (22) is fixedly connected to the nut seat (214).

6. The automatic detection device for perpendicularity and straightness of a seamless cylinder according to claim 1, wherein: The detection sensor (22) is a laser rangefinder.

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