Rotary platform with forced positioning function

Abstract

The utility model relates to the technical field of steel, in particular to a revolving platform with a forced positioning function, which comprises a turntable, a bottom plate, a driving device and a positioning device, the turntable is rotatably connected with the bottom plate, the driving device is fixedly connected with the bottom plate, the output end of the driving device is connected with the turntable, and the positioning device is fixed on the turntable. The positioning device comprises rollers, positioning grooves are distributed in the bottom plate and provided with guide-in faces, resistance faces and centering grooves, the guide-in faces and the resistance faces are oppositely arranged in an upward included angle mode, the centering grooves are formed in the bottoms of the positioning grooves and connected with the guide-in faces and the resistance faces respectively, and when the rollers stop, the bottoms of the rollers are clamped into the centering grooves. The rotary platform can be forcibly positioned at the preset stop position through the positioning groove, and the problem that when the weight of the steel coil is too small or too large, the inertia difference is huge, and consequently rotation of the rotary platform is not in place or the angle deviation is too large is solved.

Description

Technical Field

[0001] This utility model relates to the field of steel technology, and in particular to a rotary platform with a forced positioning function. Background Technology

[0002] In the continuous casting and rolling production of hot-rolled steel plates, it is often necessary to transport steel coils from the production line. Currently, the rotary platforms on the continuous casting and rolling production line are mainly located in two places: the coil transport trolley and the fixed turntable. The coil transport trolley rotates the steel coils delivered by the coil receiving device by 180° to facilitate sampling and cutting. The turntable rotates the steel coils from the No. 1 walking beam by 90° so that the No. 2 or No. 3 walking beam can receive the coils. Since the coil receiving device and the walking beam need to be deeply inserted into the bracket for coil placement / receiving, the positional accuracy of the rotary platform after rotation is required to be high enough, striving to ensure that the rotary platform is parallel to the C-hook and walking beam in the coil receiving device.

[0003] Current positioning methods typically rely on proximity switches and other position sensors to detect the rotational position of the steel coil. The motor output is then stopped, and the rotary platform decelerates until it stops at a preset position. However, in practical applications, the varying sizes and weights of the steel coils carried on the rotary platform result in significant differences in inertia. This often leads to the rotary platform failing to reach its designated position or exhibiting excessive angular deviations. Consequently, the walking beam or the steel coil receiving device may not be able to smoothly receive the coil, resulting in extremely low fault tolerance and frequent malfunctions. This severely impacts production schedules and increases maintenance workload.

[0004] Therefore, it is necessary to propose a rotary platform with forced positioning function to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main purpose of this utility model is to provide a rotary platform with a forced positioning function to solve the technical problem in the prior art where the rotary platform cannot be positioned and the rotation angle deviation is too large due to the large difference in the size and weight of the steel coils carried on the rotary platform.

[0006] To achieve the above objectives, this utility model provides a rotary platform with forced positioning function, including a turntable, a base plate, a drive device, and a positioning device. The turntable is rotatably connected to the base plate, the drive device is fixedly connected to the base plate, and the output end of the drive device is connected to the turntable. The positioning device is fixed to the turntable and includes rollers. Positioning grooves are distributed on the base plate. Each positioning groove has an inlet surface, a resistance surface, and a centering groove. The inlet surface and the resistance surface are arranged at an angle to each other upwards. The centering groove is located at the bottom of the positioning groove and connects the inlet surface and the resistance surface respectively. When the rollers stop, the bottom of the rollers engages with the centering groove.

[0007] Preferably, the outer periphery of the base plate is provided with a track for the rollers to roll, and the positioning grooves are evenly distributed on the track.

[0008] More preferably, the positioning device includes a suspension, one end of which is fixed to a turntable, and the other end of which is connected to a roller.

[0009] Furthermore, the positioning device also includes a support column, which is rotatably connected to the roller. The support column has a perforated ear plate on its side. The suspension includes a spring and a connecting rod. One end of the connecting rod is provided with a limiting cap, and the other end of the connecting rod passes through the hole in the ear plate and is connected to the turntable. The spring is connected between the limiting cap and the ear plate.

[0010] Furthermore, the suspension and the ear plate are symmetrically arranged on both sides of the support column.

[0011] More preferably, the positioning device comprises at least two sets, which are symmetrically arranged about the axis of rotation of the turntable.

[0012] Preferably, it also includes a connecting plate, and the driving device is a hydraulic motor, which is fixed to the base plate via the connecting plate.

[0013] More preferably, it also includes a spline coupling with an inner hole and a pressure plate. The output shaft surface of the hydraulic motor is provided with several teeth. The splines on the inner hole of the spline coupling mesh with the hydraulic motor. The spline coupling and the turntable are fixedly connected by the pressure plate.

[0014] Furthermore, it also includes a slewing bearing, which includes an outer ring and an inner ring, with balls inside the outer and inner rings. The outer ring is fixedly connected to the base plate, and the inner ring is fixedly connected to the turntable.

[0015] Furthermore, it also includes a bracket for supporting the steel coil, which is fixed to the top of the turntable.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this invention, the drive device drives the turntable to rotate, thereby causing the steel coil placed on it to rotate. Before reaching the preset rotation angle, the drive device stops outputting power, and the turntable continues to rotate due to inertia. Because a positioning groove is set at the preset rotation stop position on the base plate, after the roller enters the positioning groove along the guide surface, the resistance surface prevents the roller from crossing the positioning groove due to inertia. Finally, the bottom of the roller is engaged in the centering groove to complete the positioning. The position of the centering groove is the preset stop position. By setting the drive device's stop time with the minimum steel coil weight, the positioning groove can force the rotary platform to be positioned at the preset stop position, avoiding the problem of the rotary platform not rotating in place or having excessive angle deviation caused by a large difference in inertia when the steel coil weight is too small or too large. This significantly improves the adaptability and fault tolerance of the rotary platform, reduces the failure rate, and stabilizes the production rhythm. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall internal structure in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the positioning device being inserted into the positioning groove in one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the positioning device in one embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the base plate in one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the specific structure of the positioning groove in one embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the spline coupling in one embodiment of the present invention.

[0025] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0026] Explanation of icon numbers:

[0027] 1. Base plate; 2. Connecting plate; 3. Hydraulic motor; 4. Outer ring; 5. Inner ring; 6. Turntable; 7. Pressure plate; 8. Spline coupling; 9. Positioning device; 91. Roller; 92. Suspension; 93. Support column; 10. Positioning groove; 101. Centering groove; 102. Guide surface; 103. Resistance surface. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] Please see the appendix Figure 1-6 This embodiment provides a rotary platform with forced positioning function, including a turntable 6, a base plate 1, a drive device, and a positioning device 9. The turntable 6 is rotatably connected to the base plate 1, the drive device is fixedly connected to the base plate 1, and the output end of the drive device is connected to the turntable 6. The positioning device 9 is fixed to the turntable 6 and includes a roller 91. The base plate 1 has positioning grooves 10 distributed on it. The positioning grooves 10 have an inlet surface 102, a resistance surface 103, and a centering groove 101. The inlet surface 102 and the resistance surface 103 are arranged at an angle to each other upwards. The centering groove 101 is disposed at the bottom of the positioning groove 10 and connects the inlet surface 102 and the resistance surface 103 respectively. When the roller 91 stops, the bottom of the roller 91 is engaged in the centering groove 101.

[0033] In this embodiment, the drive device drives the turntable 6 to rotate, thereby causing the steel coil placed on it to rotate. Before reaching the preset rotation angle, the drive device stops outputting, and the turntable 6 continues to rotate due to inertia. Since a positioning groove 10 is set at the preset rotation stop position of the base plate 1, after the roller 91 enters the positioning groove 10 along the guide surface 102, the resistance surface 103 prevents the roller 91 from crossing the positioning groove 10 due to inertia. Finally, the bottom of the roller 91 is engaged in the centering groove 101 to complete the positioning. The position of the centering groove 101 is the preset stop position. The technicians set the drive device stop parameters in advance with the maximum steel coil weight. The setting of the positioning groove 10 can avoid the problem of the rotary platform not rotating in place or the angle deviation being too large due to the huge difference in inertia when the steel coil weight is too small or too large. This significantly improves the adaptability and fault tolerance of the rotary platform, reduces the failure rate, and stabilizes the production rhythm. During long-term production, the roller 91 will continuously wear down the guide surface 102 and the resistance surface 103. Since the drive device needs to make the roller 91 roll out of the positioning groove 10, the wear on the resistance surface 103 will be much greater than that on the guide surface 102, which will lead to a deviation in the final positioning. A certain wear margin is reserved in the setting of the middle groove 101 to improve the fault tolerance rate.

[0034] It is worth noting that the angle, material, and surface friction coefficient of the inlet surface 102 and the resistance surface 103 can be set according to the actual needs of the factory. The top edge shape of the centering groove 101 can be adapted to the surface of the roller 91 to reduce wear.

[0035] As a further preferred embodiment, the outer periphery of the base plate 1 is provided with a track for the rollers 91 to roll. The positioning grooves 10 are evenly distributed on the track according to the preset rotation angle of the rotary platform, and the width of the track can be the same as the width of the rollers 91. The track constrains the rolling trajectory of the rollers 91, so that the rotation of the rotary platform will not deviate and the rotation is more stable.

[0036] In one embodiment, preferably, the positioning device 9 includes a suspension 92 and a support column 93. One end of the suspension 92 is fixed to the turntable 6, and the other end is connected to the roller 91. The support column 93 is rotatably connected to the roller 91. The side of the support column 93 is provided with a perforated ear plate. The suspension 92 includes a spring and a connecting rod. One end of the connecting rod is provided with a limiting cap, and the other end of the connecting rod passes through the hole in the ear plate and is connected to the turntable 6. The spring is connected between the limiting cap and the ear plate. The suspension 92 and the ear plate are symmetrically arranged on both sides of the support column 93. The spring extension and contraction of the suspension 92 has a hysteresis. The arrangement of the suspension 92 ensures that when the roller 91 enters or exits the positioning groove 10, the turntable 6 connected to the positioning device 9 and the steel coil it carries will not suddenly drop, causing a strong impact on the rotary platform and damaging it. This improves the stability and reliability of the positioning device 9 during positioning.

[0037] More preferably, there are at least two sets of positioning devices 9, which are symmetrically arranged about the axis of rotation of the turntable 6. Because the steel coil is extremely heavy, the load-bearing capacity of a single positioning device 9 is limited, and the rotary platform is prone to skewing and damage. Setting at least two sets can further improve the rotational stability of the rotary platform and reduce the failure rate.

[0038] In another preferred embodiment, the system further includes a connecting disc 2, a splined coupling 8 with an inner bore, and a pressure plate 7. The driving device is a hydraulic motor 3, which is fixed to the base plate 1 via the connecting disc 2. The output shaft surface of the hydraulic motor 3 is provided with several teeth. The splines on the inner bore of the splined coupling 8 mesh with the hydraulic motor 3. The splined coupling 8 and the turntable 6 are fixedly connected via the pressure plate 7. The hydraulic motor 3 has a large output torque. The connecting disc 2 fixes the hydraulic motor 3 and the base plate 1, making the torque output of the hydraulic motor 3 more stable. The splined coupling 8 can stably transmit the motor torque to the turntable 6, preventing failure.

[0039] In one embodiment, a slewing bearing is also included, comprising an outer ring 4 and an inner ring 5, both containing ball bearings. The outer ring 4 is fixedly connected to the base plate 1, and the inner ring 5 is fixedly connected to the turntable 6. The bearing makes the turntable 6 rotate more stably, effectively reducing rotational resistance, reducing the output power of the hydraulic motor 3, and making the rotation quieter.

[0040] Furthermore, it also includes a bracket for supporting the steel coil, which is fixed to the top of the turntable 6. The bracket can stably support the heavy steel coil, preventing it from falling and causing a production accident.

[0041] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A rotary platform with forced positioning function, comprising a turntable, a base plate, a drive device, and a positioning device, wherein the turntable is rotatably connected to the base plate, the drive device is fixedly connected to the base plate, the output end of the drive device is connected to the turntable, and the positioning device is fixed to the turntable, characterized in that, The positioning device includes a roller, and the base plate is provided with positioning grooves. The positioning grooves have an inlet surface, a resistance surface, and a centering groove. The inlet surface and the resistance surface are arranged at an angle to each other facing upwards. The centering groove is located at the bottom of the positioning groove and connects the inlet surface and the resistance surface respectively. When the roller stops, the bottom of the roller is engaged with the centering groove.

2. The rotary platform according to claim 1, characterized in that, The outer periphery of the base plate is provided with a track for the rollers to roll, and the positioning grooves are evenly distributed on the track.

3. The rotary platform according to claim 1, characterized in that, The positioning device includes a suspension, one end of which is fixed to a turntable, and the other end of which is connected to a roller.

4. The rotary platform according to claim 3, characterized in that, The positioning device also includes a support column, which is rotatably connected to the roller. The support column has a perforated ear plate on its side. The suspension includes a spring and a connecting rod. One end of the connecting rod is provided with a limit cap, and the other end of the connecting rod passes through the hole in the ear plate and is connected to the turntable. The spring is connected between the limit cap and the ear plate.

5. The rotary platform according to claim 4, characterized in that, The suspension and ear plates are symmetrically arranged on both sides of the support column.

6. The rotary platform according to claim 4, characterized in that, The positioning device consists of at least two sets, which are symmetrically arranged about the axis of rotation of the turntable.

7. The rotary platform according to claim 1, characterized in that, It also includes a connecting plate, and the driving device is a hydraulic motor, which is fixed to the base plate via the connecting plate.

8. The rotary platform according to claim 7, characterized in that, It also includes a spline coupling with an inner hole and a pressure plate. The output shaft surface of the hydraulic motor is provided with several teeth. The splines on the inner hole of the spline coupling mesh with the hydraulic motor. The spline coupling and the turntable are fixedly connected by the pressure plate.

9. The rotary platform according to claim 1, characterized in that, It also includes a slewing bearing, which comprises an outer ring and an inner ring, with balls inside the outer and inner rings. The outer ring is fixedly connected to the base plate, and the inner ring is fixedly connected to the turntable.

10. The rotary platform according to any one of claims 1-9, characterized in that, It also includes a bracket for supporting the steel coil, which is fixed to the top of the turntable.

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