Monitoring device and system of bridge crane
By installing limit switches, height sensors, controllers, and switching circuits on the bridge crane, interlocking of the crane is achieved, solving the safety accident problem caused by operational errors and improving operational safety.
Patent Information
- Application Number
- CN202423031316.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing bridge cranes, which have two sets of cranes, pose a risk of safety accidents due to operational errors.
The system employs a first limit switch and a second limit switch, multiple first height sensors and multiple second height sensors, a first controller and a second controller, and a switching circuit. By providing real-time feedback of position and height information, the first controller and the second controller are interlocked to prevent operational errors.
This effectively avoids safety accidents caused by operational errors and improves the operational safety of bridge cranes.
Smart Images
Figure CN223509539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane technology, and in particular to a monitoring device and system for a bridge crane. Background Technology
[0002] In port terminals, ultra-large tonnage bridge cranes with box-type steel structures play a crucial role as important lifting equipment in the hoisting of large cargo. The box-type steel structure consists of supporting columns and a horizontal frame. The horizontal frame includes two main beams and front and rear end beams. Two bridge cranes (1000t and 100t) are mounted on the two main beams. The 1000t bridge crane runs above the main beams, with a trapezoidal structure extending from the lower flange of the main beams. Tracks are laid on top of this trapezoidal structure, and the 100t bridge crane runs on these tracks. The 1000t bridge crane has a rated lifting capacity of 4 x 250 tons and consists of multiple lifting mechanisms, a trolley traveling mechanism, a shearing mechanism, wire ropes, and other components. The 100t bridge crane has a rated lifting capacity of 100 tons and also consists of multiple lifting mechanisms, a trolley traveling mechanism, a shearing mechanism, wire ropes, and other components.
[0003] The 1000t and 100t bridge cranes are divided into upper and lower levels but operate together on the same box-type steel structure. However, if one crane is not in the parking position or the corresponding crane mechanism is at the working height, and the operator mistakenly operates the other crane, a safety accident may occur. Utility Model Content
[0004] This utility model provides a monitoring device and system for a bridge crane to solve the technical problem in the related art where existing bridge cranes have two sets of cranes, which can lead to safety accidents due to operational errors.
[0005] Firstly, a monitoring device for a bridge crane is provided, comprising:
[0006] The first limit switch and the second limit switch are respectively installed on the trolley traveling mechanism of the first crane and the second crane.
[0007] Multiple first height sensors and multiple second height sensors are respectively installed on multiple hoisting mechanisms of the first crane and the second crane;
[0008] A first controller and a second controller are respectively installed on a first crane and a second crane. The first controller is connected to the first limit switch and the first height sensor, and the second controller is connected to the second limit switch and the second height sensor. The first controller and the second controller are connected.
[0009] A switching circuit, which is connected to the first controller and the second controller;
[0010] The first controller / second controller is used to control the operating state of the switching circuit so that the second controller / first controller can be unlocked or locked.
[0011] In some embodiments, the switching circuit includes:
[0012] A first control switch is connected to the first controller and the second controller. The first controller is used to control the on / off state of the first control switch so that the second controller can be unlocked or locked.
[0013] In some embodiments, the switching circuit includes:
[0014] A second control switch is connected to the first controller and the second controller. The second controller is used to control the on / off state of the second control switch so as to unlock or lock the first controller.
[0015] In some embodiments, both the first control switch and the second control switch are relay switches.
[0016] In some embodiments, the monitoring device for the bridge crane further includes:
[0017] A human-computer interaction interface, which is connected to the first controller and the second controller.
[0018] In some embodiments, the first limit switch and the second limit switch are proximity limit switches.
[0019] In some embodiments, both the first height sensor and the second height sensor are height encoders.
[0020] In some embodiments, both the first controller and the second controller are programmable logic controllers (PLCs).
[0021] In some embodiments, both the first controller and the second controller are microprocessors (MPUs).
[0022] Secondly, a monitoring system for a bridge crane is provided, including the aforementioned monitoring device for a bridge crane.
[0023] The beneficial effects of the technical solution provided by this utility model include:
[0024] This utility model provides a monitoring device and system for a bridge crane. The monitoring device includes a first limit switch and a second limit switch, multiple first height sensors and multiple second height sensors, a first controller and a second controller, and a switching circuit. The first controller controls the operating state of the switching circuit based on the real-time position and height information fed back by the first limit switches and the multiple first height sensors, which can unlock or lock the second controller. Simultaneously, the second controller controls the operating state of the switching circuit based on the real-time position and height information fed back by the second limit switches and the multiple second height sensors, which can unlock or lock the first controller. The first and second controllers of this utility model embodiment can be interlocked, thereby preventing safety accidents caused by operational errors. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.
[0026] Figure 1 A schematic block diagram of a monitoring device for a bridge crane provided in an embodiment of this utility model;
[0027] Figure 2 A schematic diagram of the structure of a bridge crane provided for an embodiment of this utility model;
[0028] Figure 3 A schematic diagram of the trolley traveling mechanism of the first crane of a bridge crane provided for an embodiment of this utility model;
[0029] Figure 4 A schematic diagram of the lifting mechanism of the first crane of a bridge crane provided for an embodiment of this utility model;
[0030] Figure 5 Circuit diagram of the switching circuit provided in the embodiment of this utility model;
[0031] 1. First crane; 11. First limit switch; 12. First height sensor; 13. First controller;
[0032] 2. Second crane; 21. Second limit switch; 22. Second height sensor; 23. Second controller;
[0033] 3. Switching circuit. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0035] This utility model provides a monitoring device for a bridge crane, which can solve the technical problem that existing bridge cranes have two sets of cranes, and the resulting safety accidents are caused by operational errors.
[0036] join Figure 1 As shown, this utility model embodiment provides a monitoring device for a bridge crane, including: a first limit switch 11 and a second limit switch 21, a plurality of first height sensors 12 and a plurality of second height sensors 22, a first controller 13 and a second controller 23, and a switching circuit 3.
[0037] The first limit switch 11 and the second limit switch 21 are respectively installed on the trolley traveling mechanism of the first crane 1 and the second crane 2. See also... Figure 2 As shown, the first crane 1 is a 100t bridge crane, and the second crane 2 is a 1000t bridge crane. (See also...) Figure 3 As shown, the first limit switch 11 is installed on the traveling mechanism of the first crane 1. Similarly, the second limit switch 21 is installed on the traveling mechanism of the second crane 2.
[0038] Multiple first height sensors 12 and multiple second height sensors 22 are respectively installed on multiple lifting mechanisms of the first crane 1 and the second crane 2. See Figure 4 As shown, multiple first height sensors 12 are mounted on multiple lifting mechanisms of the first crane 1.
[0039] The first controller 13 and the second controller 23 are respectively installed on the first crane 1 and the second crane 2. The first controller 13 is connected to the first limit switch 11 and a plurality of first height sensors 12, and the second controller 23 is connected to the second limit switch 21 and a plurality of second height sensors 22.
[0040] The switching circuit 3 is connected to the first controller 13 and the second controller 23. The first controller 13 / second controller 23 is used to control the working state of the switching circuit 3 so that the second controller 23 / first controller 13 can be unlocked or locked.
[0041] Specifically, the first limit switch 11 and multiple first height sensors 12 provide real-time feedback to the first controller 13 on the position information of the trolley traveling mechanism of the first crane 1 and the height information of the hooks of the multiple lifting mechanisms of the first crane 1. When the position of the trolley traveling mechanism of the first crane 1 and the height of the hooks of the multiple lifting mechanisms of the first crane 1 both meet the requirements (for example, the height of the hooks of the lifting mechanisms of the first crane is at the calibrated position H1 meters, and the position of the trolley traveling mechanism of the first crane is at the stop position 0 meters), the first controller 13 controls the working state of the switch circuit 3 to unlock the second controller 23. The second controller 23 can then control the movement of the trolley traveling mechanism and multiple lifting mechanisms of the second crane 2. When the position of the trolley traveling mechanism of the first crane 1 or the height of the hooks of the multiple lifting mechanisms of the first crane does not meet the requirements (for example, the height of the hooks of the lifting mechanism of the first crane is not at the marked position H1 meters or the position of the trolley traveling mechanism of the first crane is not at the stop position 0 meters), the first controller 13 controls the working state of the switch circuit to lock the second controller 23. The second controller 23 cannot control the trolley traveling mechanism and multiple lifting mechanisms of the second crane 2.
[0042] Similarly, the second limit switch 21 and multiple second height sensors 22 provide real-time feedback to the second controller 23 on the position information of the trolley traveling mechanism of the second crane 2 and the height information of the hooks of the multiple lifting mechanisms of the second crane 2. When the position of the trolley traveling mechanism of the second crane 2 and the height of the hooks of the multiple lifting mechanisms of the second crane 2 both meet the requirements (for example, the height of the hooks of the lifting mechanisms of the second crane is at the calibrated position H2 meters, and the position of the trolley traveling mechanism of the second crane is at the stop position 0 meters), the second controller 23 controls the working state of the switch circuit 3, thereby unlocking the first controller 13. The first controller 13 can then control the movement of its trolley traveling mechanism and multiple lifting mechanisms. When the position of the trolley traveling mechanism of the second crane 2 or the height of the hooks of the multiple lifting mechanisms of the second crane 2 does not meet the requirements (for example, the height of the hooks of the lifting mechanism of the second crane is not at the marked position H2 meters or the position of the trolley traveling mechanism of the second crane is not at the stop position 0 meters), the second controller 23 controls the working state of the switch circuit 3 to lock the first controller 13, so that the trolley traveling mechanism and the multiple lifting mechanisms cannot be operated by the first controller 13.
[0043] In summary, the monitoring device for the bridge crane in this embodiment of the present invention includes a first limit switch and a second limit switch, multiple first height sensors and multiple second height sensors, a first controller and a second controller, and a switching circuit. The first controller controls the operating state of the switching circuit based on the real-time position and height information fed back by the first limit switches and the multiple first height sensors, which can unlock or lock the second controller. Simultaneously, the second controller controls the operating state of the switching circuit based on the real-time position and height information fed back by the second limit switches and the multiple second height sensors, which can unlock or lock the first controller. The first and second controllers in this embodiment of the present invention can be interlocked, thereby preventing safety accidents caused by operational errors.
[0044] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 5 As shown, the switch circuit 3 further includes a first control switch K1, which is connected to the first controller 13 and the second controller 23. The first controller 13 is used to control the first control switch K1 to open or close, so that the second controller 23 can be unlocked or locked.
[0045] Specifically, the first control switch K1 is a relay switch. The control coil of the first control switch K1 is connected to the power supply and the IO interface of the first controller 13 to form a circuit. The controlled switch of the first control switch K1 is connected to the power supply and the IO interface of the second controller 23 to form a circuit. When the position of the trolley traveling mechanism of the first crane 1 and the height of the hooks of the multiple lifting mechanisms of the first crane 1 meet the requirements, the IO interface of the first controller 13 is grounded, the control coil of the first control switch K1 is energized, the controlled switch of the first control switch K1 is closed, the IO interface of the second controller 23 is energized to a high level, the second controller 23 is unlocked, and the second crane 2 can be controlled through the second controller 23. Conversely, when the position of the trolley traveling mechanism of the first crane 1 or the height of the hooks of the multiple lifting mechanisms of the first crane 1 meet the requirements, the IO interface of the first controller 13 is not grounded, the control coil of the first control switch K1 is not energized, the controlled switch of the first control switch K1 is open, the IO interface of the second controller 23 is not energized to a low level, the second controller 23 is locked, and the second crane 2 can no longer be controlled through the second controller 23.
[0046] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 3 As shown, the switch circuit 3 further includes a second control switch K2, which is connected to the first controller 132 and the second controller 23. The second controller 23 is used to control the on / off state of the second control switch K2 to unlock or lock the first controller 13. Specifically, the second control switch K2 is a relay switch, and its working principle is similar to that of the first control switch K1.
[0047] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the monitoring device for the bridge crane also includes a human-machine interface, which is connected to the first controller 13 and the second controller 23. The human-machine interface is equipped with a touch screen or LCD display screen to display the status information of the first crane 1 and the second crane 2, facilitating equipment control and status inquiries by operators.
[0048] As an optional implementation, in one embodiment of the utility model, the first limit switch 11 and the second limit switch 21 are proximity limit switches. Proximity limit switches have advantages such as non-contact detection, high precision, strong adaptability, and long lifespan.
[0049] As an optional implementation, in one embodiment of the invention, both the first height sensor 12 and the second height sensor 22 are height encoders. Height encoders have advantages such as high precision, high repeatability, high stability, high reliability, and the ability to operate in harsh environments.
[0050] As an optional implementation, in one embodiment of the utility model, both the first controller 13 and the second controller 23 are programmable logic controllers (PLCs). PLCs typically adopt industrial-grade design and manufacturing standards, possessing high reliability and stability, and can operate for extended periods in harsh industrial environments.
[0051] As an optional implementation, in one embodiment of the utility model, both the first controller 13 and the second controller 23 are microprocessor MPUs. Microprocessor MPUs have the advantages of small size, light weight, easy modularization, low power consumption, low cost, and high performance.
[0052] This utility model embodiment also provides a monitoring system for a bridge crane, including the aforementioned monitoring device for a bridge crane.
[0053] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0054] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0055] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.
Claims
1. A monitoring device for a bridge crane, characterized in that, include: The first limit switch and the second limit switch are respectively installed on the trolley traveling mechanism of the first crane and the second crane. Multiple first height sensors and multiple second height sensors are respectively installed on multiple hoisting mechanisms of the first crane and the second crane; A first controller and a second controller are respectively installed on a first crane and a second crane. The first controller is connected to the first limit switch and the first height sensor, and the second controller is connected to the second limit switch and the second height sensor. The first controller and the second controller are connected. A switching circuit, which is connected to the first controller and the second controller; The first controller / second controller is used to control the operating state of the switching circuit so that the second controller / first controller can be unlocked or locked.
2. The monitoring device for a bridge crane according to claim 1, characterized in that, The switching circuit includes: A first control switch is connected to the first controller and the second controller. The first controller is used to control the on / off state of the first control switch so that the second controller can be unlocked or locked.
3. The monitoring device for a bridge crane according to claim 2, characterized in that, The switching circuit includes: A second control switch is connected to the first controller and the second controller. The second controller is used to control the on / off state of the second control switch so as to unlock or lock the first controller.
4. The monitoring device for a bridge crane according to claim 3, characterized in that: Both the first control switch and the second control switch are relay switches.
5. The monitoring device for a bridge crane according to claim 1, characterized in that, Also includes: A human-computer interaction interface, which is connected to the first controller and the second controller.
6. The monitoring device for a bridge crane according to claim 1, characterized in that: The first limit switch and the second limit switch are proximity limit switches.
7. The monitoring device for a bridge crane according to claim 1, characterized in that: Both the first height sensor and the second height sensor are height encoders.
8. The monitoring device for a bridge crane according to claim 1, characterized in that: Both the first controller and the second controller are programmable logic controllers (PLCs).
9. The monitoring device for a bridge crane according to claim 1, characterized in that: Both the first controller and the second controller are microprocessors (MPUs).
10. A monitoring system for a bridge crane, characterized in that, include: The monitoring device for the bridge crane according to any one of claims 1-9.