A kind of casting blank quick length measuring device

Abstract

The utility model discloses a kind of quick length measuring devices of casting blank, belong to metallurgical continuous casting technical field, solve the problems such as low efficiency, poor precision of existing device.It includes roller way, length measuring unit, measuring unit, control unit and protective device;Length measuring unit contains driving mechanism and length measuring laser range finder, driving mechanism is driven rack by pneumatic cylinder, gear drives rotary swing arm to realize range finder telescoping;Measuring unit contains two inclinometer laser range finders distributed along roller way;Control unit acquires and processes data and controls each component, protective device contains protective cover etc.Two groups of length measuring unit combine two inclinometer units, and the full length of casting blank is calculated by two-point length measurement and deflection angle correction.This device realizes automatic non-contact measurement, fast, high precision, can avoid working condition interference, resist harsh environment, facilitate maintenance and system integration.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical continuous casting technology, and more specifically to a device for rapid length measurement of cast billets. Background Technology

[0002] In the continuous casting process of steel, the length of the billet after cutting is an important quality and production management indicator. Traditional billet length measurement mainly relies on manual measurement using measuring tapes or rulers. This method suffers from problems such as low efficiency, measurement accuracy being greatly affected by human factors, high labor intensity, and safety hazards in high-temperature radiation and billet movement environments. With the development of automation technology, some measurement solutions based on fixed-installation laser rangefinders have emerged. However, due to potential positional shifts, plate tilting, or surface oxide interference during billet conveying on roller conveyors, and the need for the measuring device itself to avoid working spaces such as hoisting and maintenance, fixed-installation rangefinders often have measurement blind spots, unstable accuracy, or are easily damaged by collisions. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rapid billet length measuring device. This device can realize automated, non-contact rapid detection of billet length and tilt state, with high measurement accuracy and adaptability to harsh industrial environments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A rapid length measuring device for cast billets, comprising: Roller conveyors are used to carry and transport casting billets to the marking and inspection station; Each length measuring unit includes a drive mechanism and a length measuring laser rangefinder. The laser emission direction of the length measuring laser rangefinder is directed towards the area above the roller conveyor. The drive mechanism includes a support frame, a drive component, a transmission assembly, a guide rail, and a rotating swing arm. The length measuring laser rangefinder is mounted at the end of the rotating swing arm. The drive component drives the rotating swing arm to swing through the transmission assembly, so that the length measuring laser rangefinder switches between a detection position and a non-detection position. In the detection position, the length measuring laser rangefinder is located above the roller conveyor. The inclination measurement unit includes an inclination laser rangefinder and a laser support. The inclination laser rangefinder is mounted on one side of the roller conveyor via the laser support, and its laser emission direction forms a preset angle with the conveyor direction of the roller conveyor.

[0005] Furthermore, the length measuring unit is in two sets, and the two sets of length measuring units are respectively set at the entrance end and the exit end of the numbering detection station along the length direction of the roller conveyor.

[0006] Furthermore, the driving component is a cylinder, and the transmission assembly includes a linear motion component connected to the driving component, a gear meshing with the linear motion component, and a rotating swing arm fixed coaxially with the gear. The length measuring laser rangefinder is installed at the end of the rotating swing arm, and the guide rail guides the linear motion component to move. The linear motion component is a rack connected to the cylinder piston rod. The rack meshes with the gear, and the cylinder drives the rack to move along the guide rail to drive the rotating swing arm to move.

[0007] Furthermore, the rack has guide grooves on both sides that mate with the guide rail, the guide rail has a grease filling port, and a bearing seat is provided at the connection shaft between the gear and the rotating swing arm.

[0008] Furthermore, the inclination measurement unit consists of two units spaced apart along the length of the roller conveyor, positioned opposite the marking detection station; the laser support includes a height-adjustable column and a mounting base fixed to the top of the column, with the inclination laser rangefinder mounted on the mounting base.

[0009] Furthermore, it also includes a control unit, which includes a signal acquisition module. The signal acquisition module is electrically connected to the length measuring laser rangefinder and the inclination measuring laser rangefinder, respectively, and is used to control the operation of the drive mechanism and each detection component and to acquire and process data.

[0010] Furthermore, it also includes a protection sensor and a positioning detection sensor. The positioning detection sensor is located beside the feed end of the roller conveyor and is electrically connected to the control unit. The protection sensor is located at the front end of the roller conveyor in the feed direction and is electrically connected to the control unit.

[0011] Furthermore, the control unit also includes a display and a communication module. The display is used to show data and operating status, and the communication module is used to communicate with a host computer to achieve data uploading and remote control.

[0012] Furthermore, it also includes a spare bracket, which is located on the side of the roller conveyor in the material feeding and discharging direction, and is equipped with a spare rangefinder placement slot and a quick connection interface.

[0013] Furthermore, it also includes protective devices, which include protective covers installed outside the length measuring laser rangefinder and the inclination measuring laser rangefinder.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. Automated non-contact measurement: Measurement is performed using a laser rangefinder, which eliminates the need for contact with the high-temperature casting billet, ensuring safety, reliability, fast response, and high measurement accuracy.

[0015] 2. Compact and reliable structure: The length measuring unit adopts a cylinder-driven rack-gear-rotating swing arm transmission method to achieve precise swing positioning of the length measuring laser rangefinder. The structure is stable, the action is fast, and it is easy to arrange in the limited space of the roller conveyor area.

[0016] 3. Comprehensive functions: By setting two sets of length measuring units, the distance between the two ends of the billet can be accurately measured, thereby calculating the actual length of the billet; by setting an inclination measuring unit at an angle to the direction of the roller conveyor, the lateral offset or tilt of the billet on the roller conveyor can be detected, and the position of the billet can be judged comprehensively.

[0017] 4. High level of intelligence: It integrates control units, multiple sensors and communication modules, and can realize fully automatic triggering measurement, data calculation, result display, fault alarm and linkage with the upper system, thereby improving the intelligence level of the production line.

[0018] 5. Convenient Maintenance: The guide rail is equipped with lubrication ports, critical rotating parts use bearing seats, and spare supports are provided, reducing maintenance difficulty and time costs. The protective cover effectively protects precision optical components from moisture, dust, and high-temperature radiation. Attached Figure Description

[0019] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotating detection state structure of the length measuring unit drive mechanism of this utility model; Figure 3 This is a schematic diagram of the length measuring unit drive mechanism of this utility model returning to the idle state; Figure 4 This is a schematic diagram of the laser support structure of this utility model; Figure 5 This is a top-view planar geometric schematic diagram of the measurement principle of this utility model; Figure 6 This is a side view geometric diagram illustrating the measurement principle of this utility model; Figure 7 This is a schematic diagram of the connection of the control unit system of this utility model; The markings in the diagram are as follows: 1-Roller conveyor, 2-Length measuring laser rangefinder, 3-Inclination measuring laser rangefinder, 4-Protective sensor, 5-Spare bracket, 6-Casting billet, 21-Support frame, 22-Cylinder, 23-Guide rail, 24-Rack, 25-Gear, 26-Rotating swing arm, 27-Protective cover, 31-Column, 32-Mounting base. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] In one embodiment of this utility model, such as Figure 1 As shown, this embodiment provides a rapid length measuring device for a cast billet 6, comprising: Roller conveyor 1 is used to carry and transport billet 6 to the marking inspection station; Each length measuring unit includes a drive mechanism and a length measuring laser rangefinder 2. The laser emission direction of the length measuring laser rangefinder 2 is directed towards the upper region of the roller conveyor 1. The drive mechanism includes a support frame 21, a drive component, a transmission assembly, a guide rail 23, and a rotating swing arm 26. The length measuring laser rangefinder 2 is mounted at the end of the rotating swing arm 26. The drive component drives the rotating swing arm 26 to swing through the transmission assembly, so that the length measuring laser rangefinder 2 switches between a detection position and a non-detection position. In the detection position, the length measuring laser rangefinder 2 is located above the roller conveyor 1. The inclination measurement unit includes an inclination laser rangefinder 3 and a laser support. The inclination laser rangefinder 3 is set on one side of the roller conveyor 1 through the laser support, and its laser emission direction forms a preset angle with the conveying direction of the roller conveyor 1.

[0023] In another embodiment of this utility model, such as Figure 5-6 As shown, there are two sets of length measuring units, which are respectively set at the entrance and exit ends of the numbering detection station along the length direction of the roller conveyor 1.

[0024] In another embodiment of this utility model, such as Figure 2-3As shown, the driving component is a cylinder 22, and the transmission assembly includes a linear motion component connected to the driving component, a gear 25 meshing with the linear motion component, and a rotating swing arm 26 coaxially fixed with the gear 25. The length measuring laser rangefinder 2 is installed at the end of the rotating swing arm 26, and the guide rail 23 guides the linear motion component to move. The linear motion component is a rack 24 connected to the piston rod of the cylinder 22. The rack 24 meshes with the gear 25, and the cylinder 22 drives the rack 24 to move along the guide rail 23 to drive the rotating swing arm 26 to move.

[0025] In another embodiment of the present invention, the rack 24 is provided with guide grooves on both sides that cooperate with the guide rail 23, the guide rail 23 is provided with a grease filling port, and a bearing seat is provided at the connecting shaft between the gear 25 and the rotating swing arm 26.

[0026] In another embodiment of this utility model, such as Figure 1 , Figure 4 As shown, the inclination measurement unit consists of two units spaced apart along the length of the roller conveyor 1 opposite the numbering detection station; the laser support includes a height-adjustable column 31 and a mounting base 32 fixed to the top of the column 31, and the inclination laser rangefinder 3 is mounted on the mounting base 32.

[0027] In another embodiment of this utility model, such as Figure 7 As shown, it also includes a control unit, which includes a signal acquisition module. The signal acquisition module is electrically connected to the length measuring laser rangefinder 2 and the inclination measuring laser rangefinder 3, respectively, and is used to control the operation of the drive mechanism and each detection component and to acquire and process data.

[0028] In another embodiment of this utility model, such as Figure 7 As shown, it also includes a protection sensor 4 and a position detection sensor. The position detection sensor is located on the side of the feed end of the roller conveyor 1 and is electrically connected to the control unit. The protection sensor 4 is located at the front end of the feed direction of the roller conveyor 1 and is electrically connected to the control unit.

[0029] In another embodiment of this utility model, such as Figure 7 As shown, the control unit also includes a display and a communication module. The display is used to display data and operating status, and the communication module is used to communicate with the host computer to realize data uploading and remote control.

[0030] In another embodiment of this utility model, a spare bracket 5 is also included. The spare bracket 5 is located on the side of the roller conveyor 1 in the material feeding and discharging direction, and is provided with a spare rangefinder placement slot and a quick connection interface.

[0031] In another embodiment of this utility model, a protective device is also included, comprising a protective cover 27 covering the length-measuring laser rangefinder 2 and the inclination-measuring laser rangefinder 3. In addition to the protective cover 27, the protective device may also include a blowing device and a cooling device, wherein: the inner wall of the protective cover 27 is provided with a heat insulation layer to block radiant heat; the blowing device is a compressed air blower with its outlet facing the laser emission window, used to continuously blow away dust and iron oxide scale; the cooling device is a water-cooling jacket, fitted over the key heat-generating parts of the rangefinder, used to actively cool them and ensure long-term stable operation of the equipment in high-temperature environments.

[0032] Specifically, such as Figures 1 to 7 As shown, the present invention provides a rapid length measuring device for cast billets, the main structure of which is arranged along the conveyor roller 1 of the cast billet 6. The roller 1 is existing equipment in the workshop, used to convey the cast billet 6. The device has a measuring area set on one side of the roller 1.

[0033] Two sets of length measuring units are arranged at certain intervals along the length of roller conveyor 1 (see...). Figure 5-6 The core of each length measuring unit is the drive mechanism and the length measuring laser rangefinder. (For example...) Figure 2-3 As shown, the drive mechanism includes a support frame 21 fixed to the foundation, a cylinder 22 as the drive component, and a transmission assembly and a guide rail 23. The transmission assembly consists of a rack 24 connected to the front end of the piston rod of the cylinder 22, a gear 25 meshing with the rack 24, and a rotating swing arm 26 coaxially fixed to the gear 25 via a key connection. The rack 24 has guide grooves on its bottom or both sides, which slide in cooperation with the linear guide rail 23 fixed on the support frame 21 to ensure accurate movement trajectory. The gear 25 is mounted on the support frame 21 via a bearing seat (not shown in the figure). The length measuring laser rangefinder 2 is securely mounted on the end of the rotating swing arm 26 via a mounting plate. The extension and retraction of the cylinder 22 drives the rack 24 to move linearly, causing the gear 25 to rotate, thereby causing the rotating swing arm 26 and the length measuring laser rangefinder 2 to swing in the vertical plane, realizing the switching between the two positions of "extended" (measuring position) and "retracted" (avoidance position). Figure 2 The image shows the state where the laser beam extends to the measurement position, and at this time, the laser beam is directed upwards towards roller 1.

[0034] The inclinometer unit includes two inclinometer laser rangefinders. (For example...) Figure 4 As shown, each inclinometer laser rangefinder 3 is mounted on the same side of the roller conveyor 1 via a laser bracket. The laser bracket includes a height-adjustable column 31 (adjustable by screw or hydraulic means) and a mounting base 32 fixed to the top of the column 31. The inclinometer laser rangefinder 3 is fixed on the mounting base 32, and its laser emission direction forms a fixed preset angle with the centerline of the roller conveyor 1, with the laser beam aimed at the side of the casting billet 6. Two inclinometer laser rangefinders 3 are installed at a distance D along the direction of the roller conveyor (see...). Figure 5 ).

[0035] The protective device mainly includes a protective cover 27. The protective cover 27 covers the exterior of both the length-measuring laser rangefinder 2 and the inclination-measuring laser rangefinder 3, particularly near their laser emission windows. The inner wall of the protective cover 27 can be lined with heat-insulating material. In a preferred embodiment, the protective device may also integrate a compressed air purger (not shown in the figure) for continuous purge of the laser window; and a water-cooling jacket (not shown in the figure) wrapped around the rangefinder housing, through which cooling water is circulated for cooling.

[0036] A positioning sensor (not shown in the figure, but may be a photoelectric switch or a proximity switch) is installed at the feed end of roller conveyor 1 to accurately determine whether the head of the billet 6 has reached the starting position in front of the first measuring point. A protection sensor 4 is installed further forward in the feed direction of roller conveyor 1 to detect the arrival of the billet 6 in advance, allowing the control system preparation time. A spare bracket 5 is located in an easily accessible position beside the roller conveyor, and has a slot and electrical quick-connect plug that match the rangefinder base for storing a spare rangefinder.

[0037] Control unit (its connection relationship is as follows) Figure 7 The control unit (shown in the image) is the brain of the device, typically installed in a high-protection electrical control cabinet. It includes a core signal acquisition module (such as a PLC or dedicated controller), which is connected via cables to two length-measuring laser rangefinders 2, two incline-measuring laser rangefinders 3, a position detection sensor, a protection sensor 4, and the solenoid valve of cylinder 22. It receives trigger signals from the sensors, controls the timing of cylinder 22's actions, collects measurement data from all rangefinders, and runs the built-in measurement algorithm. The control unit is also connected to a field display (touchscreen) and an industrial Ethernet communication module for human-machine interaction and networking with higher-level systems.

[0038] The working principle of this utility model is as follows: When the billet 6 is conveyed into the measurement area by the roller conveyor 1, the protection sensor 4 and the positioning detection sensor trigger signals in sequence. After receiving the signal, the control unit first controls the cylinder 22 of the length measuring unit to move, driving the rack 24 to move. Through the meshing of the gear 25, the rotating swing arm 26 and the length measuring laser rangefinder 2 installed at its end are quickly and smoothly extended from the standby position to the measurement position above the roller conveyor 1. At the same time, the inclination measuring laser rangefinder 3 of the inclination measuring unit continues to work. The two length measuring laser rangefinders 2 measure the vertical distance to the upper surface of the billet 6 respectively. Combined with their known installation height and horizontal spacing, the projected distance between two points on the billet 6 can be calculated. The two inclination measuring laser rangefinders 3 measure the inclination distance to the side of the billet 6. Combined with their installation angle and spacing, they calculate the inclination angle of the billet 6. The signal acquisition module of the control unit receives the data from all the rangefinders. Through the built-in algorithm, the measured projected distance is corrected with the inclination angle, and finally the accurate total length of the billet 6 is calculated. After the measurement is completed, the control unit retracts the length measuring unit to a safe position. The entire measurement process is completed automatically, and the results can be output through the display and communication module.

[0039] The measurement process is briefly described below: 1. Standby: When the billet 6 has not arrived, the length measuring unit is in the retracted state, and the length measuring laser rangefinder 2 is in a safe position. The inclination measuring laser rangefinder 3 continues to work or is on standby.

[0040] 2. Triggering and Preparation: When billet 6 is delivered, protection sensor 4 is triggered first, and the system enters the early warning preparation state. When the head of billet 6 triggers the positioning detection sensor, the control unit confirms that the billet has reached the correct starting position.

[0041] 3. Measurement: The control unit immediately drives the cylinders 22 of the two length measuring units to quickly and synchronously extend the two length measuring laser rangefinders 2 to the measuring point above the roller conveyor 1. The two length measuring laser rangefinders 2 measure the distances H1 and H2 from the two ends of the billet 6, respectively. At the same time, the two inclination measuring laser rangefinders 3 measure the inclination distances S1 and S2 to the side of the billet, respectively.

[0042] 4. Calculation and correction: such as Figure 5 and Figure 6 As shown, based on the installation spacing, installation height, laser tilt angle, and measured inclination distances S1 and S2 of the two inclination laser rangefinders 3, the skew angle of the billet side relative to the center line of the roller conveyor can be calculated. The control unit uses this skew angle to perform geometric correction on the projected distance obtained by the length measuring laser rangefinder 2, and finally obtains the true length of the billet 6.

[0043] 5. Reset and Output: After the measurement calculation is completed, the control unit controls cylinder 22 to retract, causing the length-measuring laser rangefinder 2 to return to a safe position. The measurement result is displayed on the local monitor and simultaneously uploaded to the production management system via the communication module. The device returns to standby mode, awaiting the next casting billet.

[0044] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A rapid length measuring device for cast billets, characterized in that, include: Roller conveyor (1) is used to carry and transport the billet (6) to the marking inspection station; Each length measuring unit includes a drive mechanism and a length measuring laser rangefinder (2). The laser emission direction of the length measuring laser rangefinder (2) is directed towards the area above the roller conveyor (1). The drive mechanism includes a support frame (21), a drive component, a transmission assembly, a guide rail (23), and a rotating swing arm (26). The length measuring laser rangefinder (2) is mounted at the end of the rotating swing arm (26). The drive component drives the rotating swing arm (26) to swing through the transmission assembly, so that the length measuring laser rangefinder (2) switches between a detection position and a non-detection position. In the detection position, the length measuring laser rangefinder (2) is located above the roller conveyor (1). The inclination measurement unit includes an inclination laser rangefinder (3) and a laser support. The inclination laser rangefinder (3) is set on one side of the roller conveyor (1) through the laser support, and its laser emission direction forms a preset angle with the conveying direction of the roller conveyor (1).

2. The rapid length measuring device for cast billets according to claim 1, characterized in that, The length measuring unit consists of two sets, which are respectively located at the entrance and exit of the numbering detection station along the length of the roller conveyor (1).

3. The rapid length measuring device for cast billets according to claim 1, characterized in that, The driving component is a cylinder (22). The transmission assembly includes a linear motion component connected to the driving component, a gear (25) meshing with the linear motion component, and a rotating swing arm (26) fixed coaxially with the gear (25). The length measuring laser rangefinder (2) is installed at the end of the rotating swing arm (26). The guide rail (23) guides the linear motion component to move. The linear motion component is a rack (24) connected to the piston rod of the cylinder (22). The rack (24) meshes with the gear (25). The cylinder (22) drives the rack (24) to move along the guide rail (23) to drive the rotating swing arm (26) to move.

4. The rapid length measuring device for cast billets according to claim 3, characterized in that, The rack (24) has guide grooves on both sides that cooperate with the guide rail (23). The guide rail (23) has a grease filling port. The connecting shaft between the gear (25) and the rotating swing arm (26) has a bearing seat.

5. The rapid length measuring device for cast billets according to claim 1, characterized in that, The inclination measurement unit consists of two units spaced apart along the length of the roller conveyor (1) opposite the numbering detection station. The laser support includes a height-adjustable column (31) and a mounting base (32) fixed to the top of the column (31). The inclination laser rangefinder (3) is mounted on the mounting base (32).

6. The rapid length measuring device for cast billets according to claim 1, characterized in that, The control unit includes a signal acquisition module, which is electrically connected to the length measuring laser rangefinder (2) and the inclination measuring laser rangefinder (3) respectively, and is used to control the operation of the drive mechanism and each detection component and to acquire and process data.

7. The rapid length measuring device for cast billets according to claim 6, characterized in that, It also includes a protection sensor (4) and a position detection sensor. The position detection sensor is located on the side of the feed end of the roller conveyor (1) and is electrically connected to the control unit. The protection sensor (4) is located at the front end of the feed direction of the roller conveyor (1) and is electrically connected to the control unit.

8. The rapid length measuring device for cast billets according to claim 6, characterized in that, The control unit also includes a display and a communication module. The display is used to show data and operating status, and the communication module is used to communicate with a host computer to achieve data uploading and remote control.

9. The rapid length measuring device for cast billets according to claim 1, characterized in that, It also includes a spare bracket (5), which is located on the side of the roller conveyor (1) in the material feeding and discharging direction, and is provided with a spare rangefinder placement slot and a quick connection interface.

10. The rapid length measuring device for cast billets according to claim 1, characterized in that, It also includes protective devices, which include protective covers (27) covering the outside of the length measuring laser rangefinder (2) and the inclination measuring laser rangefinder (3).

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