Positioning device suitable for casting blank on transfer trolley
By removing the cold metal detector from the rollers of the transfer trolley and installing it at the outlet of the runner weighing rollers, combined with the programmable logic controller and timer design, the deceleration of the cast billet on the transfer trolley is solved and the reduction of the cast billet on the transfer trolley and The problem of low stopping accuracy achieves precise speed reduction and stopping of the casting billet, improving the operating economy and reliability of the equipment.
Patent Information
- Application Number
- CN202323416159.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-14
Smart Images
Figure CN222448190U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to a programmable controller (PLC) transmission system, and in particular relates to a deceleration and stop positioning process of a roller conveying a cast billet in slab continuous casting production, and more specifically, relates to a positioning device suitable for a cast billet on a transfer trolley. Background Art
[0002] As the core equipment for transporting ingots between the slab continuous casting machine and the hot rolling mill in the steelmaking plant, the transfer trolley is responsible for transporting the ingots produced by the slab continuous casting machine from the flow channel weighing roller to the hot delivery or E roller to the hot rolling mill, which is of decisive significance to the smooth flow of the entire logistics. Figure 1 As shown, the transfer trolley is in the upper position, that is, the I group and II group of rollers of the transfer trolley are aligned with the first-stream weighing roller and the second-stream weighing roller respectively, and the lifting baffles at the end of the first-stream weighing roller and the second-stream weighing roller are lowered to the low position. The billets on the first-stream weighing roller and the second-stream weighing roller are weighed, and a signal for conveying the billets to the transfer trolley is sent. The I (II) group of rollers of the transfer trolley automatically rotates forward at high speed to prepare for receiving the billets; at the same time, the first (second) stream weighing roller automatically runs at high speed under the triggering of the weighing completion signal, and the billets are conveyed from the first (second) stream weighing roller to the I (II) group of rollers of the trolley. When the billets completely reach the I (II) group of rollers on the transfer trolley, the transfer trolley leaves the upper position and automatically runs at high speed to the hot delivery E (hot delivery A) roller to convey the billets to the hot rolling mill. The precise stopping position of the ingot on the rollers of group I (II) of the transfer trolley is the key to the automatic operation of the transfer trolley, which is mainly accomplished by the three groups of cold metal detectors I, III, and V (II, IV, and VI) installed on the rollers of group I (II) of the transfer trolley: the cold metal detectors of group I (II) detect the head of the ingot and generate a signal that the ingot is being transported from the weighing rollers to the transfer trolley; the cold metal detectors of group III (IV) detect the deceleration signal of the rollers of group I (II) of the transfer trolley; the cold metal detectors of group V (VI) detect the head of the ingot and generate a stopping signal; the detections of groups III (IV) and V (VI) together generate a signal that the ingot is on the rollers of group I (II) of the transfer trolley. In the actual production process, the ingot moves at high speed on the transfer trolley's group I (II) rollers or the transfer trolley vibrates or shakes during operation, which frequently causes errors in the detection signal of the cold metal detector, which in turn causes the ingot to stop inaccurately or not stop at all on the transfer trolley's group I (II) rollers, and directly hits the anti-collision baffle on the east side of the group I (II) rollers at high speed, causing automatic operation failure, and causing safety hazards and damage to equipment.
[0003] Therefore, the prior art needs to be improved. Utility Model Content
[0004] The purpose of the utility model is to use the positioning device of the utility model in places where the deceleration or parking accuracy requirements are not high or where the detection element is difficult to install, so as to achieve economic operation. The so-called low requirements for deceleration and parking accuracy mainly refer to the rapidity of deceleration, such as deceleration from 30 m / min to 10 m / min, and the deceleration time can be 3 seconds to 10 seconds; the low requirements for parking accuracy mainly refer to the requirement of exceeding the required stop position by 100 to 300 mm. That is, the utility model provides a positioning device suitable for the ingot on the transfer trolley.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions, which are specifically described as follows:
[0006] According to an aspect of the utility model, there is provided a positioning device suitable for a casting blank on a transfer trolley, comprising:
[0007] Runner weighing rollers, which weigh the ingots and transport them after weighing;
[0008] A transfer trolley is provided with a roller conveyor, the roller conveyor on the transfer trolley is aligned with the flow channel weighing roller conveyor and receives the ingot conveyed from the flow channel weighing roller conveyor;
[0009] Cold metal detector, which is installed at the exit of the runner weighing roller, detects whether the head of the billet reaches the cold metal detector and whether the tail of the billet passes the cold metal detector during the process of the billet being transported from the runner weighing roller to the roller of the transfer trolley.
[0010] In one embodiment of the present invention, it also includes:
[0011] A programmable logic controller, a cold metal detector detects the signal when the head of the billet reaches the cold metal detector and the signal when the tail of the billet passes the cold metal detector during the process of the billet being transported from the runner weighing roller to the roller of the transfer trolley, and the programmable logic controller is configured to control the deceleration of the billet on the transfer trolley, the positioning of the billet and the precise stopping of the billet in response to the signal detected by the cold metal detector.
[0012] In one embodiment of the utility model, there are multiple runner weighing rollers, and the transfer trolley is provided with multiple groups of rollers, and each group of rollers is aligned with the corresponding runner weighing rollers.
[0013] In one embodiment of the present invention, the transfer trolley is located above the flow channel weighing roller.
[0014] In one embodiment of the present invention, the positioning device further comprises:
[0015] Hot delivery roller, the hot delivery roller is located on the upper position of the transfer trolley.
[0016] In one embodiment of the present invention, the transfer trolley runs to the hot delivery roller after the ingot completely reaches the roller of the transfer trolley.
[0017] In one embodiment of the utility model, there are multiple cold metal detectors, and the cold metal detectors are installed at the exit of each flow channel weighing roller.
[0018] In one embodiment of the present invention, the programmable logic controller includes a plurality of timers.
[0019] In one embodiment of the utility model, the programmable logic controller is configured to trigger and maintain the signal for the transfer trolley to collect the ingot at a low speed after multiple timer delays when the cold metal detector detects that the ingot head reaches the cold metal detector and is shielded from light.
[0020] In one embodiment of the utility model, the programmable logic controller is configured to trigger and maintain the signal that the billet is in place after multiple timer delays when the cold metal detector detects that the tail of the billet has passed the cold metal detector, and control the roller table of the transfer trolley to stop.
[0021] In one embodiment of the utility model, the programmable logic controller is configured to implement jitter filtering of the detection signal by delaying connection and delaying disconnection of different timers within respective preset time ranges when the cold metal detector is triggered by external interference.
[0022] By adopting the above technical solution, the utility model has the following advantages compared with the prior art:
[0023] The utility model removes the cold metal detector from the roller table of the transfer trolley and installs it at the outlet of the flow channel weighing roller table. The cold metal detector is not installed on the transfer trolley, thereby eliminating the error of the cold metal detector detection signal caused by vibration or shaking. The utility model can complete the detection function of three groups of cold metal detectors in the existing design through the design of one group of cold metal detectors and PLC, and realize the deceleration of the ingot on the transfer trolley, the ingot placement and the precise stopping of the ingot. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 The schematic diagram of the structure of the positioning device of the casting blank on the transfer trolley provided by the prior art is shown;
[0025] Figure 2 The schematic diagram of the structure of the positioning device of the casting blank on the transfer trolley provided by the utility model is shown;
[0026] Figure 3 The figure shows the high and low speed conversion diagram of the roller conveyor of the transfer trolley in the utility model;
[0027] Figure 4The figure shows the signal diagram of the in-place casting billet in the utility model. DETAILED DESCRIPTION
[0028] It should be understood that the embodiments of the present invention shown in the exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in the present invention, it is easy for those skilled in the art to understand that multiple modifications are feasible without actually departing from the teachings of the subject matter of the present invention. Accordingly, all such modifications should be included within the scope of the present invention. Without departing from the gist of the present invention, other replacements, modifications, changes and deletions may be made to the design, operating conditions and parameters of the following exemplary embodiments.
[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0030] like Figure 2 As shown, the utility model provides a positioning device suitable for a casting blank on a transfer trolley, comprising:
[0031] The first-stream weighing roller and the second-stream weighing roller weigh the ingots and transport the ingots after weighing;
[0032] A transfer trolley, which is located above the first-stream weighing roller and the second-stream weighing roller. The transfer trolley is provided with two groups of rollers, namely, trolley group I rollers and trolley group II rollers. The trolley group I rollers are aligned with the first-stream weighing rollers, and the trolley group II rollers are aligned with the second-stream weighing rollers. The trolley group I rollers and the trolley group II rollers receive the ingots transported from the first-stream weighing rollers and the second-stream weighing rollers respectively.
[0033] Hot delivery rollers A and E are located on the upper position of the transfer trolley. After the ingot has completely reached the transfer trolley's roller group I and roller group II, the transfer trolley leaves the upper position of the flow and automatically runs to the hot delivery roller E (A) at high speed to the south (north);
[0034] Cold metal detectors I and II are installed at the exits of the first-stream weighing roller and the second-stream weighing roller. The cold metal detectors I and II detect the signals of I and II when the head of the billet reaches the cold metal detectors and the signals when the tail of the billet passes over the cold metal detectors I and II during the process of the billet being transported from the first-stream weighing roller and the second-stream weighing roller to the trolley group I roller and the trolley group II roller.
[0035] A programmable logic controller is configured to control the deceleration, positioning and precise stopping of the ingot on the transfer trolley in response to the signals detected by the cold metal detectors I and II.
[0036] Through the above technical scheme of the utility model, the utility model removes the cold metal detector from the roller of the transfer trolley and installs it to the outlet of the flow channel weighing roller. The cold metal detector is not installed on the transfer trolley, thereby eliminating the error of the cold metal detector detection signal caused by vibration or shaking; the utility model can complete the detection function of three groups of cold metal detectors in the existing design through the design of one group of cold metal detectors and PLC, and realize the deceleration of the ingot on the transfer trolley, the ingot placement and the precise stopping.
[0037] In the above positioning device, the programmable logic controller includes a plurality of timers.
[0038] In the above positioning device, the programmable logic controller is configured to trigger and maintain the signal for the transfer trolley to collect the ingot at a low speed after multiple timer delays when the cold metal detector detects that the ingot head has reached the cold metal detector and is shielded from light.
[0039] In the above positioning device, the programmable logic controller is configured to trigger and maintain the signal that the billet is in place after multiple timer delays when the cold metal detector detects that the tail of the billet has passed the cold metal detector, and control the roller table of the transfer trolley to stop.
[0040] In the above positioning device, the programmable logic controller is configured to implement jitter filtering of the detection signal by delaying connection and delaying disconnection of different timers within respective preset time ranges when the cold metal detector is triggered by external interference.
[0041] The above structure of the utility model is described below in conjunction with specific embodiments.
[0042] like Figure 1 As shown, Figure 1 The figure shows a schematic diagram of the structure of the positioning device of the ingot on the transfer trolley provided by the prior art. Figure 1 In the process, the precise stopping of the ingot on the roller group I (II) of the transfer trolley is mainly completed by the three groups of cold metal detectors I, III, and V (II, IV, and VI) arranged on the roller group I (II) of the transfer trolley: the cold metal detectors of group I (II) detect the head of the ingot and generate a signal that the ingot is being transported from the weighing roller to the transfer trolley; the cold metal detectors of group III (IV) detect the deceleration signal of the roller group I (II) of the transfer trolley; the cold metal detectors of group V (VI) detect the head of the ingot and generate a stopping signal; the detections of groups III (IV) and V (VI) together generate a signal that the ingot is on the roller group I (II) of the transfer trolley.
[0043] However, in the present invention, if Figure 2 As shown, Figure 2The schematic diagram of the structure of the positioning device of the ingot on the transfer trolley provided by the utility model is shown. The utility model removes the cold metal detectors of group I (II) from the rollers of group I (II) of the transfer trolley and installs them at the exit of the first-stream weighing roller and the second-stream weighing roller. The remaining two groups of cold metal detectors of group III, V, IV and VI on the transfer trolley are all removed and not used. The cold metal detector is not on the transfer trolley, eliminating the error of the cold metal detector detection signal caused by vibration or shaking. Through the design of the cold metal detectors of group I (II) and the S7PLC timer, the detection functions of the three groups of cold metal detectors of group I, III and V (II, IV and VI) of the original design are completed, and the deceleration, the ingot placement and the precise stopping of the ingot on the transfer trolley are realized.
[0044] The following analysis is based on the transfer trolley 1 set of rollers (Ⅰ set of rollers) as an example.
[0045] like Figure 2-3 As shown, during the process of the billet being transported from the first-stage weighing roller to the group I roller of the transfer trolley, when the head of the billet reaches the group I cold metal detector and is shielded from light, the detection signal I1016.3 changes from "0" to "1", and the timer T56 delays for 1.5s and the state of the timer T57 changes from "0" to "1", further triggering the timer T58 to start timing. After 18s, the state of T58 changes from "0" to "1", triggering and maintaining the "trolley group 1 low-speed billet collection" signal, that is, M1011.2 changes from "0" to "1". When M1011.2=1, the "trolley group 1 high-speed request" signal is disconnected, that is, M13.3 changes from "1" to "0", and the trolley "trolley group 1 low-speed request" signal is connected at the same time, that is, M13.4 changes from "0" to "1", and the group I roller of the transfer trolley changes from high speed to low speed operation, preparing for precise parking.
[0046] like Figure 3 and 4 As shown, when the tail of the billet passes over the cold metal detector of group I, the detection signal I1016.3 changes from "1" to "0", the timer T57 delays 3s and changes from "1" to "0", the falling edge detection M11.7 triggers the timer T19 delay 9s, triggers and maintains the "trolley group 1 billet in place" signal, that is, M1011.3 changes from "0" to "1". When M1011.3=1, the high-speed and low-speed requests of trolley group 1 are disconnected, that is, M13.3=M13.4=0, the roller table of trolley group 1 stops, that is, the roller table of trolley group I stops, and the billet is transported to the roller table of transfer trolley group I.
[0047] In addition, the sensitivity of the cold metal detector is very high, and it is easy to be disturbed by the momentary interference of on-site vibration, shaking, water vapor, human activities, etc., triggering instantaneous error signals; at the same time, when the equipment personnel and operators inspect the equipment, they need to block the light for a moment to judge its working status, and at this time, a trigger signal that is not necessary for the control S7PLC will be generated. The above two situations will cause the transfer trolley to fail to run automatically. In order to eliminate the adverse effects of these abnormal interference signals on the automatic operation of the transfer trolley, it is necessary to use the S7PLC timer and design a jitter filter. Figure 3 As shown, when external interference triggers group I cold metal detectors, I1016.3=1 or I1016.3=0. As long as it is within the time range of 1.5s and 3s, the jitter filtering of the detection signal is realized by the delayed connection of timer T56 and the delayed disconnection of T57, and the ingot position signal I1016.3 maintains the state before triggering, thus shielding the interference.
[0048] It can be seen that the utility model removes the cold metal detector from the roller conveyor of the transfer trolley and installs it at the exit of the runner weighing roller conveyor. The cold metal detector is not installed on the transfer trolley, thereby eliminating the error of the cold metal detector detection signal caused by vibration or shaking; the utility model can complete the detection function of three groups of cold metal detectors in the existing design through the design of one group of cold metal detectors and PLC, and realize the deceleration of the ingot on the transfer trolley, the ingot placement and the precise stopping.
[0049] It should be pointed out in particular that the various components or steps in the above-mentioned embodiments can be cross-linked, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable arrangements and combinations should also fall within the scope of protection of the present utility model, and the scope of protection of the present utility model should not be limited to the embodiments.
[0050] The above are exemplary embodiments disclosed in the present utility model. The order disclosed in the above embodiments of the present utility model is only for description and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope (including claims) disclosed in the embodiments of the present utility model is limited to these examples. Various changes and modifications may be made without departing from the scope defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present utility model may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.
[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present utility model (including the claims) is limited to these examples; under the idea of the embodiments of the present utility model, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present utility model as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.
Claims
1. A positioning device suitable for casting on a transfer trolley, characterized in that: include: A runner weighing roller, which weighs the ingot and transports the ingot after weighing; A transfer trolley, wherein a roller is provided on the transfer trolley, and the roller on the transfer trolley is aligned with the runner weighing roller and receives the ingot conveyed from the runner weighing roller; A cold metal detector is installed at the exit of the runner weighing roller. The cold metal detector detects whether the head of the ingot reaches the cold metal detector and whether the tail of the ingot passes the cold metal detector during the process of the ingot being transported from the runner weighing roller to the roller of the transfer trolley.
2. The positioning device for the ingot on the transfer trolley according to claim 1, characterized in that: Also includes: A programmable logic controller, wherein the cold metal detector detects the signal when the head of the ingot reaches the cold metal detector and the signal when the tail of the ingot passes over the cold metal detector during the process of the ingot being transported from the runner weighing roller to the roller of the transfer trolley, and the programmable logic controller is configured to control the deceleration of the ingot on the transfer trolley, the ingot positioning and the precise stopping of the ingot in response to the signal detected by the cold metal detector.
3. The positioning device for the ingot on the transfer trolley according to claim 1, characterized in that: There are multiple flow channel weighing rollers, and the transfer trolley is provided with multiple groups of rollers, and each group of rollers is aligned with the corresponding flow channel weighing roller.
4. The positioning device for the ingot on the transfer trolley according to claim 3 is characterized in that: The transfer trolley is located above the flow channel weighing roller.
5. The positioning device for casting on the transfer trolley according to claim 1, characterized in that: Also includes: A hot delivery roller is located above the transfer trolley.
6. The positioning device for casting on the transfer trolley according to claim 2, characterized in that: There are multiple cold metal detectors, and the cold metal detectors are installed at the exit of each flow channel weighing roller.
7. The positioning device for casting on the transfer trolley according to claim 2, characterized in that: The programmable logic controller includes a plurality of timers.
8. The positioning device for the ingot on the transfer trolley according to claim 7, characterized in that: The programmable logic controller is configured to trigger and maintain a signal for the transfer trolley to collect the ingot at a low speed after delaying through multiple timers when the cold metal detector detects that the ingot head has reached the cold metal detector and is shielded from light.
9. The positioning device for the ingot on the transfer trolley according to claim 8, characterized in that: The programmable logic controller is configured to trigger and maintain a signal indicating that the billet is in place after multiple timer delays when the cold metal detector detects that the tail of the billet has passed the cold metal detector, and control the roller table of the transfer trolley to stop.
10. The positioning device for the ingot on the transfer trolley according to claim 9, characterized in that: The programmable logic controller is configured to implement jitter filtering of the detection signal by delaying connection and delaying disconnection of different timers within respective preset time ranges when the cold metal detector is triggered by external interference.