A steel pipe weighing device

Abstract

This patent application belongs to the field of steel pipe measurement technology, specifically relating to a steel pipe weighing device, including two sets of transmission mechanisms located on both sides of the lower part of the steel pipe for transporting the steel pipe; it also includes a lifting mechanism with a platform scale on it, and a support frame fixedly connected to the platform scale. The contact surface between the support frame and the lower part of the steel pipe is inclined downward and is a V-shaped surface. The front and rear ends of the support frame are respectively provided with a transmitting end and a detecting end for detecting the length of the steel pipe. The detecting end includes a translation mechanism and a baffle. The translation mechanism can drive the baffle to closely adhere to the end of the steel pipe along the axial direction. The transmitting end includes an intercepting plate and an infrared rangefinder. When measuring the length, the intercepting plate and the baffle are located at both ends of the steel pipe, and the transmitting end detects the distance of the steel pipe through infrared light. Through the above mechanism, it can be connected with the transmission mechanism of other processes, resulting in better production continuity. Moreover, during weighing, the intercepting plate and the V-shaped surface provide support, making it less likely for the steel pipe to fall.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe measurement technology, specifically to a steel pipe weighing device. Background Technology

[0002] Length and weight are among the main specifications of steel pipes. A fast and accurate length measurement system is an important part of product labeling. However, long steel pipes (usually over 6 meters, or even 12 meters or longer) cannot be weighed by simply placing them on a platform scale like ordinary items.

[0003] The existing patent (CN212623084U) describes a steel pipe length measuring and weighing system, which includes two sets of support frames for the steel pipes, a liftable weighing device installed under the frames, and length detection devices installed at both ends of the frames to achieve weighing and length measurement. However, the above solution has the following problems: 1. There are no feeding and discharging devices, resulting in poor production continuity; 2. When the steel pipe is lifted, it may tilt, causing the steel pipe to slip. Therefore, the flatness of the contact surface when the weighing device is lifted is required to be high. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a steel pipe weighing device that has better production continuity and makes it less likely for the steel pipe to fall off during weighing.

[0005] The technical solution adopted in this utility model is as follows: A steel pipe weighing device includes two sets of transmission mechanisms located on both sides of the lower part of the steel pipe for transporting the steel pipe; it also includes a lifting mechanism with a platform scale on it. A support frame is fixedly connected to the platform scale. The contact surface between the support frame and the lower part of the steel pipe is downwardly inclined and V-shaped. The front and rear ends of the support frame are respectively provided with a transmitting end and a detecting end for detecting the length of the steel pipe. The detecting end includes a translation mechanism and a baffle. The translation mechanism can drive the baffle to closely adhere to the end of the steel pipe along the axial direction. The transmitting end includes an intercepting plate and an infrared rangefinder. When measuring the length, the intercepting plate and the baffle are located at both ends of the steel pipe, and the transmitting end detects the distance of the steel pipe through infrared light.

[0006] Working principle: The steel pipe is transported through the transmission mechanisms on both sides until it is intercepted by the interceptor plate. The lifting mechanism can raise the support frame, causing the steel pipe to rise. Since the contact surface is inclined, the steel pipe is also in an inclined state. The translation mechanism drives the baffle to move towards the end of the steel pipe until the baffle is close to the end. At this time, the transmitter detects the distance of the steel pipe through infrared light, and simultaneously completes the weighing and length measurement. The lifting mechanism drives the support frame to descend, causing the steel pipe to fall onto the transmission mechanism. The interceptor plate is lower than the initial position, allowing the steel pipe to pass through until the steel pipe enters the next process.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: The aforementioned mechanism allows for seamless integration with other process transmission mechanisms, resulting in better production continuity. Furthermore, during weighing, the interceptor plate and V-shaped surface provide support, preventing the steel pipe from easily falling off.

[0008] In a preferred embodiment of this utility model, the translation mechanism includes a hydraulic cylinder, and the baffle is fixedly connected to the piston rod of the hydraulic cylinder.

[0009] In a preferred embodiment of this utility model, the translation mechanism includes an electromagnet and a sliding guide rail. A sliding rod is slidably installed inside the sliding guide rail. The outer end of the sliding rod is fixedly connected to a baffle. When the electromagnet is activated, the sliding rod can slide inward.

[0010] Beneficial effects: With the above settings, since the upper surface of the support frame is inclined, when it is lifted, the electromagnet is de-energized and the baffle will automatically slide down. At this time, the distance between the baffle and the intercepting plate is the length of the steel pipe. Compared with the hydraulic cylinder solution, in order to avoid the baffle being crushed, a corresponding pressure sensor needs to be set up for detection when the hydraulic rod drives the baffle to press against the steel pipe. Therefore, the electromagnet solution has a lower cost.

[0011] In a preferred embodiment of this utility model, the lifting mechanism includes a scissor lift platform, and the platform scale is fixedly installed on the scissor lift platform.

[0012] Beneficial effects: Scissor lifts have the advantages of stability, safety, and high load capacity.

[0013] In a preferred embodiment of this utility model, both sets of the transmission mechanisms include a drive rod and a hollow roller. The drive rod can drive the hollow roller to rotate. The outer wall of the hollow roller is provided with threads, and the two hollow rollers rotate in opposite directions.

[0014] Beneficial effects: The above setup enables spiral conveying, which is beneficial for the cleaning process.

[0015] In a preferred embodiment of this utility model, a pressure sensor is provided on the interceptor plate. When the steel pipe is transmitted to the interceptor plate, it comes into contact with the pressure sensor. By setting the pressure sensor, it can detect whether the steel pipe on the transmission mechanism has been transmitted to the correct position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure during weighing in an embodiment of the steel pipe weighing device of this utility model; Figure 2 This is a schematic diagram of the interception structure in an embodiment of the steel pipe weighing device of this utility model; Figure 3 This is a cross-sectional view of the steel pipe weighing device in an embodiment of this utility model during weighing.

[0017] The attached reference numerals include: 1. Transmission mechanism; 2. Platform scale; 3. Support frame; 4. Transmitter; 41. Interception plate; 42. Infrared rangefinder; 43. Pressure sensor; 5. Detection end; 51. Electromagnet; 52. Sliding guide rail; 53. Sliding rod; 54. Baffle; 6. Steel pipe. Detailed Implementation

[0018] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0019] In the description of this application, the terms "first", "second", etc. are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] See Figure 1 As shown in the figure, this embodiment discloses a steel pipe 6 weighing device, including two sets of transmission mechanisms 1, lifting mechanisms, platform scales 2, support frames 3, transmitting end 4 and detection end 5.

[0021] Among them, the two sets of transmission mechanisms 1 are located on the lower two sides of the steel pipe 6 respectively. Each set of transmission mechanisms 1 includes a drive rod and a hollow roller. The drive rod can drive the hollow roller to rotate. The outer wall of the hollow roller is provided with threads. The two hollow rollers rotate in opposite directions. The drive rod is driven by a motor.

[0022] In other embodiments, the transmission mechanism 1 may also use multiple parallel transmission rollers arranged at an angle for transmission.

[0023] The lifting mechanism includes a scissor lift platform, the platform scale 2 is fixedly installed on the scissor lift platform, and the support frame 3 is installed on the platform scale 2.

[0024] Among them, see Figure 2 and Figure 3 As shown, the contact surface between the support frame 3 and the lower part of the steel pipe 6 is inclined downward and is a V-shaped surface. This V-shaped surface can also be a U-shaped surface, with both sides inclined inward.

[0025] The transmitting end 4 and the detecting end 5 are located at the two ends of the support frame 3, respectively. The detecting end 5 includes a translation mechanism and a baffle 54. The translation mechanism can drive the baffle 54 to be tightly attached to the end of the steel pipe 6 along the axial direction. The transmitting end 4 includes an intercepting plate 41 and an infrared rangefinder 42. When measuring the length, the intercepting plate 41 and the baffle 54 are located at the two ends of the steel pipe 6, respectively. The transmitting end 4 detects the distance of the steel pipe 6 by infrared light. The baffle 54 should be aligned with the infrared rangefinder 42.

[0026] The translation mechanism includes an electromagnet 51 and a sliding guide rail 52. A sliding rod 53 is located inside the sliding guide rail 52. The outer end of the sliding rod 53 is fixedly connected to a baffle 54. When the electromagnet 51 is activated, the sliding rod 53 can slide inward. Lubricating oil should be provided inside the sliding guide rail 52 to ensure that it can slide.

[0027] In other embodiments, the translation mechanism may also employ a hydraulic cylinder.

[0028] The working principle of this embodiment is as follows: Initially, the interceptor plate 41 is at a height that can block the steel pipe 6, and the baffle 54 is lower than the steel pipe 6. The steel pipe 6 is transmitted through the transmission mechanisms 1 on both sides until it is intercepted by the interceptor plate 41. The pressure sensor 43 detects the signal and controls the PLC system to lift the support frame 3, which in turn lifts the steel pipe 6. Since the contact surface is inclined, the steel pipe 6 is also in an inclined state. Due to the influence of gravity, the baffle 54 and the sliding rod 53 slide down along the sliding guide rail 52, so that the baffle 54 is close to the end. At this time, the transmitter 4 detects the distance of the steel pipe 6 through infrared light and simultaneously completes the weighing and length measurement. The lifting mechanism drives the support frame 3 to descend, so that the steel pipe 6 falls onto the transmission mechanism 1. The interceptor plate 41 is lower than the initial position, allowing the steel pipe 6 to pass through until the steel pipe 6 enters the next process.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A steel pipe weighing device, characterized in that: It includes two sets of transmission mechanisms, which are located on both sides of the lower part of the steel pipe and transmit the steel pipe. It also includes a lifting mechanism, on which a platform scale is mounted. A support frame is fixedly connected to the platform scale. The contact surface between the support frame and the lower part of the steel pipe is inclined downward and is a V-shaped surface. The front and rear ends of the support frame are respectively provided with a transmitting end and a detecting end for detecting the length of the steel pipe. The detecting end includes a translation mechanism and a baffle. The translation mechanism can drive the baffle to fit tightly against the end of the steel pipe along the axial direction. The transmitting end includes an intercepting plate and an infrared rangefinder. When measuring the length, the intercepting plate and the baffle are respectively located at both ends of the steel pipe. The transmitting end detects the distance to the steel pipe through infrared light.

2. The steel pipe weighing device according to claim 1, characterized in that: The translation mechanism includes a hydraulic cylinder, and the baffle is fixedly connected to the piston rod of the hydraulic cylinder.

3. The steel pipe weighing device according to claim 1, characterized in that: The translation mechanism includes an electromagnet and a sliding rail. A sliding rod is slidably installed inside the sliding rail. The outer end of the sliding rod is fixedly connected to a baffle. When the electromagnet is activated, the sliding rod can slide inward.

4. The steel pipe weighing device according to claim 1, characterized in that: The lifting mechanism includes a scissor lift platform, and the platform scale is fixedly installed on the scissor lift platform.

5. The steel pipe weighing device according to claim 1, characterized in that: Both sets of the transmission mechanisms include a drive rod and a hollow roller. The drive rod can drive the hollow roller to rotate. The outer wall of the hollow roller is provided with threads. The two hollow rollers rotate in opposite directions.

6. The steel pipe weighing device according to claim 1, characterized in that: The interceptor plate is equipped with a pressure sensor, and when the steel pipe is transmitted to the interceptor plate, it comes into contact with the pressure sensor.

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