A self-operating system for lifting equipment

Abstract

The utility model relates to a self-operating system for lifting equipment, including a production execution system, a material control system, an overhead crane dispatching control system, lifting equipment, a lower computer and an overhead crane; the production execution system is used to send tasks to the material control system; the material control system is used to parse the received tasks to obtain instructions, and distribute the instructions to the overhead crane dispatching control system; the overhead crane dispatching control system is used to send dispatching commands to the overhead crane and the lower computer respectively according to the distributed instructions; the overhead crane is used to run to the lifting area where the lifting equipment is located or leave the lifting area where the lifting equipment is located according to the received dispatching commands; the lower computer is used to control the lifting of the lifting equipment. The utility model automatically controls the lifting of the lifting equipment through the lower computer, effectively improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment control, in particular to a self-operating system for lifting equipment. Background Art

[0002] The MTL lifting device is a single-machine lifting device. Generally, in the maintenance area of ​​a production workshop, the overhead hoist transport (OHT) trolley is transported to the overhead rail by the MTL lifting device, or the OHT is dispatched from the overhead rail to the maintenance area by the overhead crane dispatching control system (OCS, OHT Control System), and then descends to the ground by the MTL lifting device for workers to inspect and maintain.

[0003] The existing control mode is OffLine (single-machine manual operation), and there is no data interaction between the OHT and the OCS. After the OHT arrives at the maintenance area, it is necessary to switch to manual control mode to perform the lifting operation of the trolley. Single-machine manual operation increases the possibility of operational errors. OffLine causes the OCS system to be unable to collect and monitor the current status of the lifting equipment MTL.

[0004] In summary, the existing method of manually controlling the lifting equipment MTL is inefficient and prone to human errors that may lead to system failures. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of low efficiency of the manual control method of the lifting equipment MTL in the prior art.

[0006] In order to solve the above technical problems, the utility model provides a self-operating system for lifting equipment, including a production execution system MES, a material control system MCS, an overhead crane dispatching control system OCS, a lifting equipment MTL, a lower computer and an overhead crane;

[0007] The production execution system MES is connected to the material control system MCS; the material control system MCS is connected to the overhead crane dispatching control system OCS; the overhead crane dispatching control system OCS is respectively connected to the lower computer and the overhead crane; the lower computer is respectively connected to the lifting equipment MTL and the overhead crane;

[0008] The production execution system MES is used to send tasks to the material control system MCS; the material control system MCS is used to parse the received tasks to obtain instructions, and distribute the instructions to the overhead crane scheduling control system OCS; the overhead crane scheduling control system OCS is used to send scheduling commands to the overhead crane and the lower computer respectively according to the assigned instructions; the overhead crane is used to run to the lifting area where the lifting equipment MTL is located or leave the lifting area where the lifting equipment MTL is located according to the received scheduling commands; the lower computer is used to control the lifting of the lifting equipment MTL.

[0009] In one embodiment of the utility model, it also includes an inner rail and an outer rail for carrying an overhead crane, wherein the inner rail and the outer rail are located on the same horizontal line, and the outer rail is the overhead rail for the overhead crane to execute the dispatching command of the overhead crane dispatching control system OCS.

[0010] In one embodiment of the utility model, the outer rail is provided with a first laser data transmission device connected to the lower computer at a position close to the inner rail, the inner rail is provided with a second laser data transmission device connected to the lower computer, and the overhead crane is provided with a third laser data transmission device;

[0011] The first laser data transmission device is used to perform laser interaction with the third laser data transmission device of the overhead travelling vehicle to confirm whether the overhead travelling vehicle has reached the outer rail position where the first laser data transmission device is located;

[0012] The second laser data transmission device is used to perform laser interaction with the third laser data transmission device of the overhead travelling vehicle to confirm whether the overhead travelling vehicle has reached the inner rail position where the second laser data transmission device is located.

[0013] In one embodiment of the utility model, the communication mode of laser interaction between the first laser data transmission device and the third laser data transmission device of the overhead crane is P IO communication;

[0014] The communication method for laser interaction between the second laser data transmission device and the third laser data transmission device of the overhead crane is PIO communication.

[0015] In one embodiment of the present invention, the first laser data transmission device, the second laser data transmission device and the third laser data transmission device all use SEM I-E84 semiconductors.

[0016] In one embodiment of the utility model, the connection mode between the production execution system MES and the material control system MCS is wireless communication;

[0017] The connection method between the material control system MCS and the overhead crane dispatching control system OCS is wireless communication;

[0018] The connection mode between the overhead crane dispatching control system OCS and the lower computer and the overhead crane is wireless communication;

[0019] The connection mode between the lower computer and the overhead crane is wireless communication;

[0020] The connection mode between the lower computer and the lifting device is wired communication.

[0021] In one embodiment of the present utility model, when the connection mode between the overhead crane dispatching control system OCS and the lower computer is wireless communication, the Socket communication protocol is adopted.

[0022] In one embodiment of the present invention, the lower machine is integrated with the lifting device MTL.

[0023] In one embodiment of the present invention, the lower computer is a programmable logic controller (PLC).

[0024] The above technical solution of the utility model has the following advantages compared with the prior art:

[0025] The self-operating system for lifting equipment described in the utility model provides an OnL i ne networking control idea, and realizes seamless connection between all MCS-OCS-OHT-MTL (PLC) devices through PIO data interaction, making factory automation more efficient and allowing background operation and maintenance (MCS, OCS) to more conveniently monitor the status of MTL equipment;

[0026] The utility model can directly control the lifting operation of the lifting equipment MTL through the lower computer (i.e., PLC). Under the condition of meeting the automatic production and automatic scheduling of OHT, the utility model can efficiently coordinate the OHT to go to the maintenance area (i.e., MTL lifting area), and there is no need to wait for direct automatic interlocking. After the OHT arrives at the MTL maintenance area, the PLC in the MTL and the OHT can directly execute the landing command after completing the P IO data exchange, without manual operation, thereby improving the maintenance efficiency, reducing the probability of human operation errors, and realizing the full automatic operation and real-time online monitoring of the on-site equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0028] Figure 1 This is a structural block diagram of a self-operating system for lifting equipment in an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of the operation of the overhead travelling vehicle on the outer rail and the inner rail and the interaction of IPO data in an embodiment of the utility model.

[0030] Explanation of the markings in the specification: 1. first point; 2. second point; 3. third point; 4. fourth point; 5. fifth point; 6. inner rail; 7. first sub-outer rail; 8. second sub-outer rail. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] Embodiment 1

[0033] Reference Figure 1 As shown, the utility model relates to a self-operating system for lifting equipment, including a production execution system MES, a material control system MCS, an overhead crane dispatching control system OCS, a lifting equipment MTL, a lower computer and an overhead crane;

[0034] The production execution system MES is connected to the material control system MCS; the material control system MCS is connected to the overhead crane dispatching control system OCS; the overhead crane dispatching control system OCS is respectively connected to the lower computer and the overhead crane; the lower computer is respectively connected to the lifting equipment MTL and the overhead crane;

[0035] The production execution system MES is used to send tasks to the material control system MCS; the material control system MCS is used to parse the received tasks to obtain instructions, and distribute the instructions to the overhead crane scheduling control system OCS; the overhead crane scheduling control system OCS is used to send scheduling commands to the overhead crane and the lower computer respectively according to the assigned instructions; the overhead crane is used to run to the lifting area where the lifting equipment MTL is located or leave the lifting area where the lifting equipment MTL is located according to the received scheduling commands; the lower computer is used to control the lifting of the lifting equipment MTL.

[0036] The production execution system MES of this embodiment is equivalent to the customer demand system. Any customer demand is sent down step by step through the production execution system MES to the production execution system MCS, and then to the overhead crane dispatching control system OCS.

[0037] The overhead crane dispatching control system OCS and the material control system MCS of this embodiment are bidirectionally interconnected. The overhead crane dispatching control system OCS can not only receive instructions from the production execution system MCS, but also collect relevant information of the overhead crane and send the relevant information of the overhead crane to the material control system MCS.

[0038] The lifting equipment MTL is an independent device, which realizes the lifting function through the lower computer PLC control. The control mode is divided into manual and automatic control modes. In the manual control mode, the operator can control the lifting equipment MTL stand-alone lifting operation on the HMI touch screen. Manual control is not flexible enough, so this embodiment adopts automatic control. In the automatic control mode, there is no need for operator control. The lifting equipment MTL communicates and exchanges data through PLC and OCS, receives OCS instructions through PLC, executes related lifting actions, reaches the production line linkage coordination, and realizes fully automatic control and monitoring.

[0039] The overhead crane dispatching control system OCS is the steward of the automatic material handling system (AMHS). It commands and controls the efficient operation of OHT, receives the handling instructions from MCS, searches for suitable handling vehicles, plans the optimal handling path, issues handling commands to the handling vehicles, and monitors the handling process in real time, dynamically adjusts the handling path, and reports the status of each link of the handling process to MCS. The OCS system includes handling control logic, path algorithm, load balancing and other functions, which are related to the handling efficiency of the AMHS system.

[0040] Overhead crane (OHT) is the main body of the AMHS system, which is generally composed of functional modules such as travel, lifting, steering, rotation, grabbing and releasing, and communication. OHT is equipped with a variety of safety sensors such as anti-collision, double loading, anti-falling, and position, and has safety designs in many aspects such as overheating, overload, emergency stop, and flame retardancy. Its own configuration and parameters determine the speed, safety performance, stability, reliability, and service life of the AMHS system, and are key factors in measuring the advancement of the AMHS system.

[0041] Furthermore, the present embodiment also includes an inner rail 6 and an outer rail for carrying the overhead crane, wherein the inner rail 6 and the outer rail are located on the same horizontal line (parallel), the inner rail 6 is fixed, and the inner rail 6 does not change with the lifting equipment MTL, and the outer rail is the overhead rail for the overhead crane to execute the dispatching command of the overhead crane dispatching control system OCS.

[0042] Furthermore, the outer rail is provided with a first laser data transmission device connected to the lower computer at a position close to the inner rail (i.e., the fourth point 4), the inner rail is provided with a second laser data transmission device connected to the lower computer (i.e., the fifth point 5), and the overhead crane is provided with a third laser data transmission device;

[0043] The first laser data transmission device is used to perform laser interaction (IPO data interaction) with the third laser data transmission device of the overhead travelling vehicle to confirm whether the overhead travelling vehicle has reached the outer rail position where the first laser data transmission device is located;

[0044] The second laser data transmission device is used to perform laser interaction (IPO data interaction) with the third laser data transmission device of the overhead travelling vehicle to confirm whether the overhead travelling vehicle has reached the inner rail position where the second laser data transmission device is located.

[0045] Furthermore, the communication mode for laser interaction between the first laser data transmission device and the third laser data transmission device of the overhead crane is P IO communication; the communication mode for laser interaction between the second laser data transmission device and the third laser data transmission device of the overhead crane is P IO communication.

[0046] The first laser data transmission device, the second laser data transmission device and the third laser data transmission device (E84 Sensor, PIO) for PIO communication in this embodiment are communication devices that transmit 8bit data in a non-contact manner according to the semiconductor SEM I-E84 protocol. This product is a composite product that integrates 2.4GHz and 5GHz RF communication and IR (infrared, light) communication carriers.

[0047] Furthermore, the connection method between the production execution system MES and the material control system MCS is wireless communication; the connection method between the material control system MCS and the overhead crane scheduling control system OCS is wireless communication; the connection method between the overhead crane scheduling control system OCS and the lower computer and the overhead crane is wireless communication; the connection method between the lower computer and the overhead crane is wireless communication; the connection method between the lower computer and the lifting equipment is wired communication.

[0048] Furthermore, when the connection mode between the overhead crane dispatching control system OCS and the lower computer is wireless communication, the Socket communication protocol is adopted.

[0049] Furthermore, the lower computer is built into the lifting device MTL, that is, the lower computer and the lifting device MTL are integrated into one.

[0050] Furthermore, the lower computer is a programmable logic controller (PLC).

[0051] See also Figure 2 In this embodiment, the outer rail near the inner rail 6 is divided into a first sub-outer rail 7 and a second sub-outer rail 8. The first sub-outer rail 7 is provided with a first point 1 and a second point 2. The starting end of the second sub-outer rail 8 is located between the first point 1 and the second point 2 of the first sub-outer rail 7. The second sub-outer rail 8 is provided with a third point 3 and a fourth point 4. The inner rail 6 is provided with a fifth point 5. The fourth point 4 and the fifth point 5 need to perform laser interaction (i.e., PIO data interaction). The first point 1 (for buffering and pausing), the second point 2 (for turning and U-turning), and the third point 3 (for buffering and pausing) do not need to perform laser interaction (i.e., PIO data interaction).

[0052] The following combination Figure 2 The dispatching and receiving procedures of the overhead crane (OHT) are introduced in detail:

[0053] (I) Departure process

[0054] (a) The overhead travelling crane is manually moved into the lifting device MTL. When the overhead travelling crane reaches the fifth point 5 of the inner rail, it stops and switches to the automatic control mode (i.e., controlled by PLC);

[0055] (b) Sending a departure request to the overhead crane dispatching control system OCS through the PLC built into the lifting equipment MTL;

[0056] (c) The overhead crane dispatching control system OCS determines whether to agree to the departure. If the overhead crane dispatching control system OCS agrees to the departure, it replies to the PLC with approval (then the PLC controls the lifting device MTL to rise) and controls the departure of the overhead crane; if the overhead crane dispatching control system OCS refuses, it replies to the PLC with rejection and the departure process is terminated;

[0057] (d) When the overhead crane dispatching control system OCS agrees to start the crane, the PLC controls the lifting device MTL to rise to the position where the inner rail 6 is located. At this time, the third laser data transmission device of the overhead crane itself and the second laser data transmission device of the fifth point 5 (the second laser data transmission device is connected to the PLC) perform PIO data interaction. The success of the PIO data interaction indicates that the overhead crane is correctly at the fifth point 5 (including accurate position, no abnormality, etc.);

[0058] (e) The PLC built into the lifting equipment MTL sends information to the overhead travelling crane dispatching control system OCS to allow the overhead travelling crane to leave the inner rail 6;

[0059] (f) The overhead travelling crane dispatching control system OCS receives the information that allows the vehicle to leave the inner track 6, and sends a route to the overhead travelling crane to make the overhead travelling crane leave the inner track 6;

[0060] (g) When the overhead crane leaves the inner rail 6 from the fifth point 5 and reaches the fourth point 4 of the outer rail, it stops, and the third laser data transmission device of the overhead crane performs PIO data exchange with the first laser data transmission device at the fourth point 4 (the first laser data transmission device is connected to the PLC). Successful PIO data exchange indicates that the overhead crane is correctly at the fourth point 4 (including accurate position, no abnormality, etc.);

[0061] (h) The PLC built into the lifting equipment MTL sends information to the overhead crane dispatching control system OCS to allow the overhead crane to leave the fourth point and run on the outer track;

[0062] (i) The overhead travelling crane dispatching control system OCS receives the information that the overhead travelling crane is allowed to leave the fourth point 4 and move toward the outer track, and sends a route to the overhead travelling crane to make it leave the fourth point 4, and the departure process ends.

[0063] (II) Vehicle collection process

[0064] (a) The PLC built into the lifting equipment MTL sends a request to collect the vehicle to the overhead crane dispatching control system OCS;

[0065] (b) The overhead crane dispatching control system OCS determines whether to agree to collect the car. If the overhead crane dispatching control system OCS agrees to collect the car, it replies to the PLC with approval (then the PLC controls the lifting device MTL to rise) and controls the overhead crane to collect the car; if the overhead crane dispatching control system OCS refuses, it replies to the PLC with rejection and the car collection process is terminated;

[0066] (c) When the overhead crane dispatching control system OCS agrees to collect the crane, the overhead crane dispatching control system OCS sends a route to make the overhead crane run to the second point 2, the overhead crane completes a U-turn at the second point 2, and the overhead crane dispatching control system OCS sends a route to make the overhead crane turn around from the second point 2 to the fourth point 4 via the third point 3;

[0067] (d) The overhead travelling crane stops at the fourth point 4 of the outer rail, and the third laser data transmission device of the overhead travelling crane performs PIO data exchange with the first laser data transmission device at the fourth point 4 (the first laser data transmission device is connected to the PLC). Successful PIO data exchange indicates that the overhead travelling crane is correctly at the fourth point 4 (including accurate position and no abnormality). At the same time, the PLC controls the lifting device MTL to rise to the position of the inner rail 6.

[0068] (e) The PLC built into the lifting equipment MTL sends information to the overhead travelling crane dispatching control system OCS to allow the overhead travelling crane to leave the fourth point 4 and enter the inner track 6;

[0069] (f) The overhead travelling crane dispatching control system OCS receives the information that allows the overhead travelling crane to leave the fourth point 4 and enter the inner track 6, and sends a route to the overhead travelling crane so that the overhead travelling crane leaves the fourth point 4 and arrives at the fifth point 5 of the inner track 6;

[0070] (g) The overhead crane stops at the fifth point 5, and the third laser data transmission device of the overhead crane performs PIO data exchange with the second laser data transmission device at the fifth point 5 (the second laser data transmission device is connected to the PLC). The success of the PIO data exchange indicates that the overhead crane is correctly at the fifth point 5 (including accurate position, no abnormality, etc.).

[0071] (h) PLC controls the MTL lifting device carrying the overhead crane to descend and complete the crane retraction.

[0072] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0073] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A self-operating system for lifting equipment, characterized in that: Including production execution system MES, material control system MCS, overhead crane dispatching control system OCS, lifting equipment MTL, lower computer and overhead crane; The production execution system MES is connected to the material control system MCS; the material control system MCS is connected to the overhead crane dispatching control system OCS; the overhead crane dispatching control system OCS is respectively connected to the lower computer and the overhead crane; the lower computer is respectively connected to the lifting equipment MTL and the overhead crane; The production execution system MES is used to send tasks to the material control system MCS; the material control system MCS is used to parse the received tasks to obtain instructions, and distribute the instructions to the overhead crane scheduling control system OCS; the overhead crane scheduling control system OCS is used to send scheduling commands to the overhead crane and the lower computer respectively according to the assigned instructions; the overhead crane is used to run to the lifting area where the lifting equipment MTL is located or leave the lifting area where the lifting equipment MTL is located according to the received scheduling commands; the lower computer is used to control the lifting of the lifting equipment MTL.

2. The self-operating system for lifting equipment according to claim 1, characterized in that: It also includes an inner rail and an outer rail for carrying the overhead crane, wherein the inner rail and the outer rail are located on the same horizontal line, and the outer rail is the overhead rail for the overhead crane to execute the dispatching command of the overhead crane dispatching control system OCS.

3. The self-operating system for lifting equipment according to claim 2, characterized in that: The outer rail is provided with a first laser data transmission device connected to the lower computer at a position close to the inner rail, the inner rail is provided with a second laser data transmission device connected to the lower computer, and the overhead travelling crane is provided with a third laser data transmission device; The first laser data transmission device is used to perform laser interaction with the third laser data transmission device of the overhead travelling vehicle to confirm whether the overhead travelling vehicle has reached the outer rail position where the first laser data transmission device is located; The second laser data transmission device is used to perform laser interaction with the third laser data transmission device of the overhead travelling vehicle to confirm whether the overhead travelling vehicle has reached the inner rail position where the second laser data transmission device is located.

4. The self-operating system for lifting equipment according to claim 3, characterized in that: The communication mode of laser interaction between the first laser data transmission device and the third laser data transmission device of the overhead crane is PIO communication; The communication method for laser interaction between the second laser data transmission device and the third laser data transmission device of the overhead crane is PIO communication.

5. The self-operating system for lifting equipment according to claim 3, characterized in that: The first laser data transmission device, the second laser data transmission device and the third laser data transmission device all adopt SEMI-E84 semiconductors.

6. The self-operating system for lifting equipment according to claim 1, characterized in that: The connection mode between the production execution system MES and the material control system MCS is wireless communication; The connection method between the material control system MCS and the overhead crane dispatching control system OCS is wireless communication; The connection mode between the overhead crane dispatching control system OCS and the lower computer and the overhead crane is wireless communication; The connection mode between the lower computer and the overhead crane is wireless communication; The connection mode between the lower computer and the lifting device is wired communication.

7. The self-operating system for lifting equipment according to claim 6, characterized in that: When the connection mode between the overhead crane dispatching control system OCS and the lower computer is wireless communication, the Socket communication protocol is adopted.

8. The self-operating system for lifting equipment according to claim 1, characterized in that: The lower machine is integrated with the lifting device MTL.

9. The self-operating system for lifting equipment according to claim 1, characterized in that: The lower computer is a programmable logic controller PLC.

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