Heating furnace feeding rack dumping device and control method thereof

Abstract

The invention relates to a heating furnace feeding rack dumping device and a control method thereof, and belongs to the technical field of rack dumping adjustment. The device comprises a base, a rotating arm, a translation trolley, a linear telescopic piece, a limiting switch, a human-computer interface, an input and output module, a storage medium and a processor. The rotating arm and the translation trolley act through an air cylinder, and the translation trolley is provided with eight walking wheels. The control method comprises the steps of receiving starting and material pouring direction signals, checking the state of the limiting switch, executing rotation and translation motion, waiting for billet pushing, and executing material pouring until an ending signal is received. By reducing the impact of free falling on the roller way, the equipment damage risk is reduced, the product surface quality is improved, and meanwhile the operation efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of rack unloading regulation, and in particular to a heating furnace loading rack unloading device and a control method thereof. Background Art

[0002] The charging platform of the heating furnace and the steel roller table in front of the furnace are the main equipment for feeding steel into the heating furnace. Because the charging platform adopts a step-by-step structure, the steel billet falls freely from the charging platform to the steel roller table in front of the furnace. Due to the large drop, the impact on the roller table is large, which not only causes damage to the roller table bearings, but also causes bad material on the surface of the steel billet, causing surface quality problems of the product. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a device for unloading a charging stand of a heating furnace and a control method thereof, which realizes two-way unloading of steel billets between the charging stand of a heating furnace and the steel roller table in front of the furnace through control logic, thereby reducing the roller impact and billet surface damage caused by free fall, thereby reducing the risk of equipment damage and improving the surface quality of the product.

[0004] To achieve the above-mentioned purpose, in the first aspect, a heating furnace loading platform unloading device is provided, which is used for unloading steel billets in both directions between the heating furnace loading platform and the steel roller table in front of the furnace. The heating furnace loading platform and the steel roller table in front of the furnace are both provided with a stepping device for advancing the steel billets. The heating furnace loading platform unloading device comprises:

[0005] Base;

[0006] A rotating arm is mounted on the base and is rotatably connected to the base;

[0007] A translation trolley having a plurality of running wheels, the translation trolley runs in the rotating arm, and an L-shaped plate is provided at the end thereof;

[0008] A first linear telescopic member, connected to the rotating arm, and used to drive the rotating arm to realize a rotating motion;

[0009] A second linear telescopic member is connected to the translation trolley and is used to drive the translation trolley to move forward and backward;

[0010] The swivel arm limit switch is used to confirm the position of the swivel arm;

[0011] The translation trolley limit switch is used to confirm the position of the translation trolley;

[0012] Human-machine interface, used to display the equipment status and operation buttons, so that the operator can send and receive start signals, stop signals and dump direction signals;

[0013] An input module, used for receiving a start signal, a stop signal, a signal of a rotating arm limit switch, and a signal of a translation trolley limit switch;

[0014] An output module, used for outputting signals to control the first linear telescopic member and the second linear telescopic member;

[0015] A storage medium for storing control logic;

[0016] A processor is used to operate according to the control logic to control the output module to output a signal according to the signal of the input module.

[0017] Furthermore, the first linear telescopic member and the second linear telescopic member are cylinders.

[0018] Furthermore, the rotating arm is installed on the base through a pin shaft and fixed by a shaft end baffle, and the rotating arm is rotatably connected to the base through a bearing.

[0019] Furthermore, the translation trolley has 8 running wheels.

[0020] Furthermore, the second aspect provides a control method for the unloading device of the heating furnace loading platform according to any one of the first aspects, comprising the following steps:

[0021] S1, receiving a start signal from an operator;

[0022] S2, receiving a dumping direction signal from an operator to determine the dumping direction of the billet;

[0023] S3, check the limit switch status of the rotating arm and the translation trolley, confirm whether the position of the rotating arm and the translation trolley is at the preset initial position in the material unloading direction, if not, initialize the position of the rotating arm and the translation trolley according to the preset control logic, if yes, continue to execute the control logic;

[0024] S4, stretching or contracting the first linear telescopic member to position the rotating arm to a preset material dumping angle;

[0025] S5, after the first linear telescopic member completes the rotation action, the processor generates a translation direction signal according to the material unloading direction signal and outputs it to the second linear telescopic member through the output module;

[0026] S6, stretching or contracting the second linear telescopic member to position the translation trolley to a preset material unloading position;

[0027] S7, after the rotating arm is positioned at the preset unloading angle and the translation trolley is positioned at the unloading position, wait for the stepping device to push the billet to the L-shaped plate at the end of the translation trolley according to the preset time interval;

[0028] S8, reversing the direction of the unloading direction signal and re-inputting it into the first linear telescopic member, and reversing the direction of the translation direction signal and re-inputting it into the second linear telescopic member to perform the unloading action;

[0029] S9, determine whether the end signal sent by the operator is received, if not, repeat steps S2 to S9, otherwise end.

[0030] Furthermore, the preset initial position in the material pouring direction in step S3 is the position after the material pouring action is performed in step S8.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] (1) The present invention realizes precise control of the first linear telescopic member and the second linear telescopic member through control logic, and reduces the direct impact of the free fall of the steel billet on the roller table through the coordination of the rotating arm, the translation trolley, the first linear telescopic member and the second linear telescopic member, thereby ensuring the automation and safety of the unloading process, reducing the risk of wear and damage of the equipment, and extending the service life of the equipment.

[0033] (2) The present invention ensures the safety of mechanical movement and prevents accidents caused by position errors by providing a rotating arm limit switch and a translation trolley limit switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a loading and unloading device for a heating furnace provided by an embodiment of the present invention;

[0035] Figure 2 A flow chart of a control method for a loading platform unloading device of a heating furnace provided in an embodiment of the present invention;

[0036] Explanation of reference numerals: 1. Rotating arm; 2. Base; 3. Translational trolley; 4. First linear telescopic member; 5. Heating furnace loading platform; 6. Pin shaft; 7. Steel roller table in front of furnace; 8. Second linear telescopic member. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "axial", "lateral", "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] like Figure 1 As shown, the embodiment of the present invention provides a heating furnace loading platform unloading device, which is used for two-way unloading of steel billets between the heating furnace loading platform 5 and the furnace front steel roller 7. The heating furnace loading platform 5 and the furnace front steel roller 7 are both provided with a stepping device for advancing the steel billets. The heating furnace loading platform 5 unloading device includes:

[0041] Base 2;

[0042] The rotating arm 1 is mounted on the base 2 and is rotatably connected to the base 2;

[0043] The translation trolley 3 has a plurality of running wheels, and the translation trolley 3 runs in the rotating arm 1, and an L-shaped plate is provided at the end thereof;

[0044] A first linear telescopic member 4 is connected to the rotating arm 1 and is used to drive the rotating arm 1 to realize a rotating motion;

[0045] The second linear telescopic member 8 is connected to the translation trolley 3 and is used to drive the translation trolley 3 to move forward and backward;

[0046] Rotating arm 1 limit switch, used to confirm the position of rotating arm 1;

[0047] The limit switch of the translation trolley 3 is used to confirm the position of the translation trolley 3;

[0048] Human-machine interface, used to display the equipment status and operation buttons, so that the operator can send and receive start signals, stop signals and dump direction signals;

[0049] An input module, used for receiving a start signal, a stop signal, a signal of a limit switch of a rotating arm 1, and a signal of a limit switch of a translation trolley 3;

[0050] An output module, used for outputting signals to control the first linear telescopic member 4 and the second linear telescopic member 8;

[0051] A storage medium for storing control logic;

[0052] The processor is used to operate according to the control logic to control the output module to output the signal according to the signal of the input module.

[0053] Preferably, the first linear telescopic member 4 and the second linear telescopic member 8 are cylinders.

[0054] Specifically, the rotating arm 1 is installed on the base 2 through the pin shaft 6 and fixed by the shaft end baffle. The rotating arm 1 is rotatably connected to the base 2 through the bearing.

[0055] Preferably, the translation trolley 3 has 8 running wheels.

[0056] like Figure 2 As shown, as an embodiment, a control method for a pouring device of a heating furnace loading platform 5 includes the following steps:

[0057] S1, receiving a start signal from an operator;

[0058] S2, receiving a dumping direction signal from an operator to determine the dumping direction of the billet;

[0059] S3, check the limit switch status of the rotating arm 1 and the translation trolley 3, confirm whether the position of the rotating arm 1 and the translation trolley 3 is at the preset initial position in the material unloading direction, if not, initialize the position of the rotating arm 1 and the translation trolley 3 according to the preset control logic, if yes, continue to execute the control logic to avoid collision or damage during the unloading process;

[0060] S4, stretching or contracting the first linear telescopic member 4 to position the rotating arm 1 to a preset pouring angle;

[0061] S5, after the first linear telescopic member 4 completes the rotation action, the processor generates a translation direction signal according to the material unloading direction signal and outputs it to the second linear telescopic member 8 through the output module;

[0062] S6, executing the stretching or contraction of the second linear telescopic member 8 to position the translation trolley 3 to a preset unloading position;

[0063] S7, after the rotating arm 1 is positioned at the preset unloading angle and the translation trolley 3 is positioned at the unloading position, wait for the stepping device to push the billet to the L-shaped plate at the end of the translation trolley 3 according to the preset time interval;

[0064] S8, reverse the direction of the unloading direction signal and re-input it into the first linear telescopic member 4, reverse the direction of the translation direction signal and re-input it into the second linear telescopic member 8, so as to perform the unloading action;

[0065] S9, determine whether the end signal sent by the operator is received, if not, repeat steps S2 to S9, otherwise end.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A material unloading device for a heating furnace loading platform, characterized in that: It is used for two-way unloading of steel billets between the loading platform of the heating furnace and the steel roller in front of the furnace. The loading platform of the heating furnace and the steel roller in front of the furnace are both provided with a stepping device for advancing the steel billets. The unloading device of the loading platform of the heating furnace includes: Base; A rotating arm is mounted on the base and is rotatably connected to the base; A translation trolley having a plurality of running wheels, the translation trolley runs in the rotating arm, and an L-shaped plate is provided at the end thereof; A first linear telescopic member, connected to the rotating arm, and used to drive the rotating arm to realize a rotating motion; A second linear telescopic member is connected to the translation trolley and is used to drive the translation trolley to move forward and backward; The swivel arm limit switch is used to confirm the position of the swivel arm; The translation trolley limit switch is used to confirm the position of the translation trolley; Human-machine interface, used to display the equipment status and operation buttons, so that the operator can send and receive start signals, stop signals and dump direction signals; An input module, used for receiving a start signal, a stop signal, a signal of a rotating arm limit switch, and a signal of a translation trolley limit switch; An output module, used for outputting signals to control the first linear telescopic member and the second linear telescopic member; A storage medium for storing control logic; A processor is used to operate according to the control logic to control the output module to output a signal according to the signal of the input module.

2. The unloading device for the heating furnace loading platform according to claim 1 is characterized in that: The first linear telescopic member and the second linear telescopic member are cylinders.

3. The unloading device for the heating furnace loading platform according to claim 1 is characterized in that: The rotating arm is installed on the base through a pin shaft and fixed by a shaft end baffle. The rotating arm is rotatably connected to the base through a bearing.

4. The unloading device for the heating furnace loading platform according to claim 1 is characterized in that: The translation trolley has 8 running wheels.

5. A control method for the unloading device of the heating furnace loading platform according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, receiving a start signal from an operator; S2, receiving a dumping direction signal from an operator to determine the dumping direction of the billet; S3, check the limit switch status of the rotating arm and the translation trolley, confirm whether the position of the rotating arm and the translation trolley is at the preset initial position in the material unloading direction, if not, initialize the position of the rotating arm and the translation trolley according to the preset control logic, if yes, continue to execute the control logic; S4, stretching or contracting the first linear telescopic member to position the rotating arm to a preset material dumping angle; S5, after the first linear telescopic member completes the rotation action, the processor generates a translation direction signal according to the material unloading direction signal and outputs it to the second linear telescopic member through the output module; S6, stretching or contracting the second linear telescopic member to position the translation trolley to a preset material unloading position; S7, after the rotating arm is positioned at the preset unloading angle and the translation trolley is positioned at the unloading position, wait for the stepping device to push the billet to the L-shaped plate at the end of the translation trolley according to the preset time interval; S8, reversing the direction of the unloading direction signal and re-inputting it into the first linear telescopic member, and reversing the direction of the translation direction signal and re-inputting it into the second linear telescopic member to perform the unloading action; S9, determine whether the end signal sent by the operator is received, if not, repeat steps S2 to S9, otherwise end.

6. The control method of the unloading device of the heating furnace loading platform according to claim 5 is characterized in that: The preset initial position in the material pouring direction in step S3 is the position after the material pouring action is performed in step S8.

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