Bridge crane cart control structure
By designing a bridge crane truck control structure containing the main circuit breaker assembly and the backup contactor assembly, the problem of burning contacts of the phase change contacts is solved, and the stable parking and efficient operation of the bridge crane truck is achieved.
Patent Information
- Application Number
- CN202421547499.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In the existing bridge crane large truck control structure, the contacts of the phase exchange contactor are easily burned, resulting in parking difficulties and equipment repairs, affecting the progress of the work line.
A bridge crane truck control structure is designed, including a power supply, a first contactor, a main circuit breaker assembly and a backup contactor assembly. Through the parallel connection between the main circuit breaker assembly and the backup contactor assembly, it is ensured that the backup contactor assembly can automatically switch and continue to work normally when the first contactor is burned.
It effectively avoids burning of contactor contacts, ensures normal parking and working of bridge crane trucks, reduces the frequency of equipment emergency repairs, and improves the progress and efficiency of the work line.
Smart Images
Figure CN222860997U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of a bridge crane trolley, in particular to a bridge crane trolley control structure. Background Art
[0002] A bridge crane is generally composed of a trolley, a lifting mechanism, a trolley, a trolley travel mechanism, an operating room, an auxiliary slide line and a main slide line. The trolley is driven by an electric motor, and the wheels are driven to roll on the track through the transmission of gears and axles to achieve lateral movement. The trolley travel mechanism is generally controlled by a set of phase-changing contactors to simultaneously control two motors. When the current of the phase-changing contactor is too large, overload operation and aging will cause the contactor contacts to burn out. In actual use, when the torque adjustment of the trolley brake is too large, it is difficult to park the crane stably. In order to park smoothly, the operator occasionally uses the reverse brake to stop the crane. When the reverse brake is used, the current of the crane trolley is large, or when the contactor is used for a long time without timely maintenance, the phase-changing contactor contacts are easily burned. At this time, the equipment needs to be repaired, which will affect the progress of the work production line. Utility Model Content
[0003] The utility model aims to provide a bridge crane trolley control structure to solve the problem in the prior art that the contact of the phase-changing contactor is burned out, which affects the progress of the working production line.
[0004] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: a bridge crane trolley control structure, including a power supply, a first contactor and a main circuit breaker assembly. The main circuit breaker assembly is closed, the power supply and the first contactor are connected through the main circuit breaker assembly, the first contactor and the main circuit breaker assembly are electrically connected with a backup contactor assembly, the first contactor and the main circuit breaker assembly are both connected in parallel with the backup contactor assembly, the backup contactor assembly is closed, the main circuit breaker assembly is electrically connected with two motors, the two motors are connected in parallel, each motor is electrically connected with a resistor, the resistors are respectively electrically connected with a linkage control console, and the power supply and the linkage control console are electrically connected.
[0005] The principle and beneficial effect of the utility model are as follows: when in use, the switch of the standby contactor assembly is in an open state, the switch of the main circuit breaker assembly is in a closed state, the current passes through the main circuit breaker assembly, the first contactor, the motor, the resistor and the linkage control console in sequence to form a closed circuit, at which time the motor rotates, and the resistance of the resistor connected to the circuit is controlled by the command output from the linkage control console, thereby controlling the speed of the motor, and when the first contactor current is too large, overloaded or aging causes the contactor contact to burn out, the switch of the main circuit breaker assembly is manually cut off, and then the switch of the standby contactor assembly is closed, at which time the standby contactor assembly replaces the original first contactor and the main circuit breaker assembly, so that the motor works normally.
[0006] Option 2 is the preferred option of the basic option. The main circuit breaker assembly includes an input circuit breaker 1, the power supply is electrically connected to the input circuit breaker 1, the input circuit breaker 1 is electrically connected to the first contactor, the first contactor is electrically connected to the output circuit breaker 1, the input circuit breaker 1 and the output circuit breaker 1 are closed, and the output circuit breaker 1 is electrically connected to the motor.
[0007] Option three is the preferred option of the basic option. The backup contactor assembly includes input circuit breaker 2 and a second contactor. The power supply is electrically connected to input circuit breaker 2, input circuit breaker 2 is electrically connected to the second contactor, the second contactor is electrically connected to output circuit breaker 2, output circuit breaker 2 is electrically connected to the motor, and input circuit breaker 2 and output circuit breaker 2 are closed.
[0008] Option 4 is the preferred option of the basic option. A relay is electrically connected between the main circuit breaker assembly and the motor. The relay is a three-phase overcurrent relay. The relay is used to protect the circuit and can automatically cut off the current when the current is overloaded.
[0009] Option 5 is the preferred basic option. Input circuit breaker 1, output circuit breaker 1, input circuit breaker 2 and output circuit breaker 2 are all miniature circuit breakers, and the specific model is: IC65N.
[0010] Solution six: This is the preferred basic solution. The first contactor and the second contactor are both AC contactors, and the specific model is: 3RT5054. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a flow chart of a bridge crane trolley control structure of the utility model;
[0012] Figure 2 The utility model discloses a circuit diagram of a control structure of a bridge crane trolley. DETAILED DESCRIPTION
[0013] The utility model is further described in detail below through specific implementation methods:
[0014] The reference numerals in the drawings of the specification include: 1. power supply, 2. input circuit breaker 1, 3. output circuit breaker 1, 4. input circuit breaker 2, 5. output circuit breaker 2, 6. second contactor, 7. first contactor, 8. motor, 9. resistor, 10. relay, 11. linkage control console.
[0015] Example
[0016] like Figure 1 and Figure 2As shown: a bridge crane trolley control structure, including a power supply 1, a first contactor 7 and a main circuit breaker assembly, the main circuit breaker assembly is closed, the power supply 1 and the first contactor 7 are connected through the main circuit breaker assembly, the main circuit breaker assembly includes an input circuit breaker 1-2, the power supply 1 and the input circuit breaker 1-2 are electrically connected, the input circuit breaker 1-2 and the first contactor 7 are electrically connected, the first contactor 7 is electrically connected to the output circuit breaker 1-3, the input circuit breaker 1-2 and the output circuit breaker 1-3 are closed, the output circuit breaker 1-3 is electrically connected to the relay 10, the first contactor 7 and the main circuit breaker assembly are electrically connected to the backup contactor assembly, the first contactor 7 and the main circuit breaker assembly are connected in parallel with the backup contactor assembly, the backup contactor assembly includes an input circuit breaker 2-4 and a second contactor 6, the power supply 1 and the input circuit breaker 2-4 are electrically connected The input circuit breaker 2 4 is electrically connected to the second contactor 6, the second contactor 6 is electrically connected to the output circuit breaker 2 5, the input circuit breaker 2 4 and the output circuit breaker 2 5 are closed, the standby contactor assembly is closed, the relay 10 is electrically connected to two motors 8, the two motors 8 are connected in parallel, the relay 10 is a three-phase overcurrent relay, the motor 8 model is: YZR160L-6, each motor 8 is electrically connected to a resistor 9, the resistors 9 are electrically connected to a linkage control console 11, the power supply 1 and the linkage control console 11 are electrically connected, the input circuit breaker 1 2, the output circuit breaker 1 3, the input circuit breaker 2 4 and the output circuit breaker 2 5 are all miniature circuit breakers, the specific model is: IC65N, the first contactor 7 and the second contactor 6 are both AC contactors, the specific model is: 3RT5054.
[0017] The implementation method of this embodiment is as follows: when in use, the input circuit breaker 2 4 and the output circuit breaker 2 5 are in the open state, and the input circuit breaker 1 2 and the output circuit breaker 1 3 are in the closed state. The current passes through the input circuit breaker 2, the first contactor 7, the output circuit breaker 3, the relay 10, the motor 8, the resistor 9 and the linkage control console 11 in sequence to form a closed circuit. At this time, the motor 8 rotates, and the resistance of the resistor 9 connected to the circuit is controlled by the command output from the linkage control console 11, thereby controlling the speed of the motor 8. When the current of the first contactor 7 is too large, the overload operation or the aging causes the contactor contact to burn, the input circuit breaker 2 and the output circuit breaker 3 are manually opened, and then the input circuit breaker 2 4 and the output circuit breaker 2 5 are closed. At this time, the input circuit breaker 2 4, the second contactor 6 and the output circuit breaker 2 5 replace the original input circuit breaker 2, the first contactor 7 and the output circuit breaker 3 respectively, so that the motor works normally.
[0018] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A bridge crane trolley control structure, characterized in that: The invention comprises a power supply (1), a first contactor (7) and a main circuit breaker assembly, wherein the power supply (1) and the first contactor (7) are connected via the main circuit breaker assembly, the first contactor (7) and the main circuit breaker assembly are electrically connected to a backup contactor assembly, the first contactor (7) and the main circuit breaker assembly are both connected in parallel with the backup contactor assembly, the main circuit breaker assembly is electrically connected to two motors (8), the two motors (8) are connected in parallel, each of the motors (8) is electrically connected to a resistor (9), the resistors (9) are respectively electrically connected to a linkage control console (11), and the power supply (1) and the linkage control console (11) are electrically connected.
2. A bridge crane trolley control structure according to claim 1, characterized in that The main circuit breaker assembly comprises an input circuit breaker 1 (2), the power source (1) is electrically connected to the input circuit breaker 1 (2), the input circuit breaker 1 (2) is electrically connected to a first contactor (7), the first contactor (7) is electrically connected to an output circuit breaker 1 (3), and the output circuit breaker 1 (3) is electrically connected to a motor (8).
3. A bridge crane trolley control structure according to claim 2, characterized in that: The backup contactor assembly comprises an input circuit breaker 2 (4) and a second contactor (6), the power supply (1) and the input circuit breaker 2 (4) are electrically connected, the input circuit breaker 2 (4) and the second contactor (6) are electrically connected, the second contactor (6) is electrically connected to the output circuit breaker 2 (5), and the output circuit breaker 2 (5) and the motor (8) are electrically connected.
4. A bridge crane trolley control structure according to claim 1, characterized in that: A relay (10) is electrically connected between the main circuit breaker assembly and the two motors (8).
5. A bridge crane trolley control structure according to claim 3, characterized in that: The input circuit breaker 1 (2), the output circuit breaker 1 (3), the input circuit breaker 2 (4) and the output circuit breaker 2 (5) are all miniature circuit breakers.
6. A bridge crane trolley control structure according to claim 1, characterized in that: The first contactor (7) and the second contactor (6) are both AC contactors.