Crane and electrical control system with emergency function

Abstract

The utility model discloses a kind of crane and electrical control system with emergency function, belong to programme mechanical crane technical field, electrical control system includes emergency controller, main controller, sensor and solenoid valve, the signal output end of sensor is connected with one end of emergency signal selection switch, the signal input end of emergency signal selection switch is electrically connected with emergency controller and main controller respectively, solenoid valve is electrically connected with the signal output end of emergency controller and main controller respectively, solenoid valve and the connecting circuit of emergency controller and main controller are respectively provided with first diode and second diode, and first diode and second diode are reversely arranged between the two. The utility model can solve the problem that fault point is difficult to eliminate and overhaul when electric control system fails, avoid delaying construction period to cause customer's economic loss.

Description

Technical Field

[0001] This utility model relates to a crane and an electrical control system with emergency functions, belonging to the technical field of engineering machinery cranes. Background Technology

[0002] As the operating scenarios for large-tonnage cranes become increasingly complex and their levels of intelligence rise, users prioritize safety and reliability during equipment use when purchasing such equipment. Surveys of overseas oilfield construction sites reveal clear requirements: cranes must be able to operate without failure for extended periods, even months. In the event of a malfunction, it must be resolved within 24 hours; failure to do so results in hefty hourly fines and even site removal. When existing electrical control systems fail, the fault is difficult to pinpoint and repair, delaying construction and causing financial losses for the customer. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a crane and an electrical control system with emergency function, which can solve the problem of difficulty in troubleshooting and repairing fault points when the electrical control system fails, and avoid delays in construction and economic losses to customers.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, this utility model discloses an electrical control system with emergency function, including an emergency controller, a main controller, a sensor, and a solenoid valve. The signal output terminal of the sensor is connected to one end of an emergency signal selection switch, and the other end of the emergency signal selection switch is electrically connected to the signal input terminals of the emergency controller and the main controller, respectively. The solenoid valve is electrically connected to the signal output terminals of the emergency controller and the main controller, respectively. A first diode and a second diode are respectively provided on the connection circuit of the solenoid valve to the emergency controller and the main controller, and the first diode and the second diode are arranged in opposite directions.

[0006] The signal input terminal of the emergency controller is electrically connected to the first input connector via the first emergency input line, and the emergency signal selection switch is electrically connected to the second input connector via the second emergency input line. The first input connector and the second input connector are connected by a plug-in connection.

[0007] The signal output terminal of the emergency controller is electrically connected to the first output connector via the first emergency output line, and the solenoid valve is electrically connected to the second output connector via the second emergency output line. The first output connector and the second output connector are connected by a plug-in connection.

[0008] The first diode is located on the second output emergency line.

[0009] The emergency controller is an integrated display and control unit.

[0010] The emergency signal selection switch is a multi-contact bidirectional selection switch.

[0011] The emergency controller is an electrical controller.

[0012] Secondly, this utility model discloses a crane equipped with the aforementioned electrical control system with emergency function.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a crane and an electrical control system with an emergency function. The signal output terminal of the sensor is connected to one end of an emergency signal selection switch, and the other end of the emergency signal selection switch is electrically connected to the signal input terminals of the emergency controller and the main controller, respectively. The solenoid valve is electrically connected to the signal output terminals of the emergency controller and the main controller, respectively. By setting up an additional emergency control system and switching it through the emergency signal selection switch, the system can switch to the emergency control system for control when the electrical control system fails. This solves the problem of difficulty in troubleshooting and repairing fault points when the electrical control system fails, and avoids delays in the construction period and economic losses to customers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electrical control system with emergency function of this utility model;

[0015] The reference numerals in the figure are as follows: 1-First input connector; 2-First input emergency line; 3-First output connector; 4-First output emergency line; 5-Emergency controller; 6-Main controller; 7-Sensor; 8-Emergency signal selection switch; 9-Second input emergency line; 10-Second input connector; 11-Second output emergency line; 12-Second output connector; 13-First diode; 14-Second diode; 15-Solenoid valve. Detailed Implementation

[0016] Example 1

[0017] like Figure 1 As shown, this utility model discloses an electrical control system with emergency function, including an emergency controller 5, a main controller 6, a sensor 7, and a solenoid valve 15. The main controller 6 is the original control unit. Under normal circumstances, the input signal from the sensor 7 is directly connected to the port of the main controller 6 through the line to detect the current state of the boom. The main controller 6 performs internal logic calculations and judgments, and outputs the corresponding solenoid valve 15 port.

[0018] This invention adds an emergency controller 5 to the existing system to form an emergency control section. The signal output terminal of the sensor 7 is connected to one end of the emergency signal selection switch 8, and the other end of the emergency signal selection switch 8 is electrically connected to the signal input terminals of both the emergency controller 5 and the main controller 6. The purpose of the emergency signal selection switch 8 is to prevent reverse signal input / output to the port of the emergency controller 5. When the emergency signal selection switch 8 is open, the signal from the sensor 7 can only enter the input port of the main controller 7 through the 0 contact of the emergency signal selection switch 8.

[0019] Solenoid valve 15 is electrically connected to the signal output terminals of emergency controller 5 and main controller 6, respectively. A first diode 13 and a second diode 14 are respectively installed on the connection circuit between solenoid valve 15 and emergency controller 5 and main controller 6, with the first diode 13 and second diode 14 configured in opposite directions. The output signal from main controller 6 is unidirectionally conducted through second diode 14, allowing it to enter only solenoid valve 15. The first diode 13, being configured in opposite directions, prevents the signal from entering the output port of emergency controller 5.

[0020] The working principle of this utility model is as follows: When the main controller 6 or the main connection line fails, the emergency controller 5 is activated by pressing the emergency signal selection switch 8. The sensor 7 enters the input signal of the emergency controller 5 through contact 1 of the emergency signal selection switch 8. The output port of the emergency controller 5 can only enter the solenoid valve 15 through the first diode 13, and cannot enter the port of the main controller 6 through the second diode 14.

[0021] This invention, by setting up an additional emergency control system and switching between the main controller and the emergency controller via an emergency signal selection switch, enables independent control of the main controller and the emergency controller. In the event of a fault, the system can quickly switch without affecting each other. When the electrical control system fails, the system can switch to the emergency control system for control, solving the problem of difficulty in troubleshooting and repairing faults when the electrical control system fails, and avoiding delays in the project schedule and economic losses to the customer.

[0022] Example 2

[0023] like Figure 1 As shown, this utility model discloses an electrical control system with emergency function, including an emergency controller 5, a main controller 6, a sensor 7, and a solenoid valve 15. The main controller 6 is the original control unit. Under normal circumstances, the input signal from the sensor 7 is directly connected to the port of the main controller 6 through the line to detect the current state of the boom. The main controller 6 performs internal logic calculations and judgments, and outputs the corresponding solenoid valve 15 port.

[0024] This invention adds an emergency controller 5 to the existing system to form an emergency control section. The emergency controller 5 is an integrated display and control unit, or a common electrical controller can be selected. The signal output terminal of the sensor 7 is connected to one end of the emergency signal selection switch 8, and the other end of the emergency signal selection switch 8 is electrically connected to the signal input terminals of both the emergency controller 5 and the main controller 6. The emergency signal selection switch 8 is a multi-contact bidirectional selection switch. The purpose of setting the emergency signal selection switch 8 in this invention is to prevent reverse signal supply to the input and output ports of the emergency controller 5. When the emergency signal selection switch 8 is open, the signal from the sensor 7 can only enter the input port of the main controller 7 through the 0 contact of the emergency signal selection switch 8.

[0025] Solenoid valve 15 is electrically connected to the signal output terminals of emergency controller 5 and main controller 6, respectively. A first diode 13 and a second diode 14 are respectively installed on the connection circuit between solenoid valve 15 and emergency controller 5 and main controller 6, with the first diode 13 and second diode 14 configured in opposite directions. The output signal from main controller 6 is unidirectionally conducted through second diode 14, allowing it to enter only solenoid valve 15. The first diode 13, being configured in opposite directions, prevents the signal from entering the output port of emergency controller 5.

[0026] The signal input terminal of the emergency controller 5 is electrically connected to the first input connector 1 through the first input emergency line 2, and the emergency signal selection switch 8 is electrically connected to the second input connector 10 through the second input emergency line 9. The first input connector 1 and the second input connector 10 are connected by a plug-in method.

[0027] The signal output terminal of the emergency controller 5 is electrically connected to the first output connector 3 via the first output emergency line 4, and the solenoid valve 15 is electrically connected to the second output connector 12 via the second output emergency line 11. The first output connector 3 and the second output connector 12 are connected by a plug-in connection. The first diode 13 is disposed on the second output emergency line 11.

[0028] Example 3

[0029] This invention discloses a crane equipped with an electrical control system with emergency function as described in Embodiment 1 or Embodiment 2.

[0030] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An electrical control system with emergency function, characterized in that: The system includes an emergency controller (5), a main controller (6), a sensor (7), and a solenoid valve (15). The signal output terminal of the sensor (7) is connected to one end of an emergency signal selection switch (8). The other end of the emergency signal selection switch (8) is electrically connected to the signal input terminals of the emergency controller (5) and the main controller (6), respectively. The solenoid valve (15) is electrically connected to the signal output terminals of the emergency controller (5) and the main controller (6), respectively. A first diode (13) and a second diode (14) are respectively provided on the connection circuit between the solenoid valve (15) and the emergency controller (5) and the main controller (6). The first diode (13) and the second diode (14) are set in opposite directions.

2. The electrical control system with emergency function according to claim 1, characterized in that: The signal input terminal of the emergency controller (5) is electrically connected to the first input connector (1) through the first input emergency line (2), and the emergency signal selection switch (8) is electrically connected to the second input connector (10) through the second input emergency line (9). The first input connector (1) and the second input connector (10) are connected by a plug-in method.

3. The electrical control system with emergency function according to claim 1, characterized in that: The signal output terminal of the emergency controller (5) is electrically connected to the first output connector (3) through the first output emergency line (4), and the solenoid valve (15) is electrically connected to the second output connector (12) through the second output emergency line (11). The first output connector (3) and the second output connector (12) are connected by a plug-in method.

4. The electrical control system with emergency function according to claim 3, characterized in that: The first diode (13) is disposed on the second output emergency line (11).

5. The electrical control system with emergency function according to claim 1, characterized in that: The emergency controller (5) is an integrated display and control unit.

6. The electrical control system with emergency function according to claim 1, characterized in that: The emergency signal selection switch (8) is a multi-contact bidirectional selection switch.

7. The electrical control system with emergency function according to claim 1, characterized in that: The emergency controller (5) is an electrical controller.

8. A crane, characterized in that: The device is equipped with an electrical control system with emergency function as described in any one of claims 1 to 7.

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