A control device for a car unloader

Abstract

This utility model discloses a control device for a truck unloading machine, relating to the field of truck unloading machine technology. The control device includes a main circuit and a control circuit. The main circuit consists of a circuit breaker QF1, a contactor KM, a thermal relay FR, and an oil pump motor M. The control circuit consists of an air switch QF2, a fuse FU, a ready indicator light HW, a stop button SB1, a start button SB2, a normally open contact of contactor KM, a normally closed contact of intermediate relay KA1, a normally open contact of intermediate relay KA2, a normally closed contact of thermal relay FR, a contactor KM coil, a running indicator light HG, a pull rope switch K1, an intermediate relay KA1 coil, a card-operated power switch K2, and an intermediate relay KA2 coil. Its structure is simple and low-cost, eliminating potential safety hazards before starting the unloading process and preventing unexpected situations during unloading, ensuring the safety of vehicles, equipment, and personnel. No operator confirmation is required when starting the unloading machine, achieving indoor and outdoor linkage and reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model belongs to the field of unloading machine technology, and in particular relates to an unloading machine control device. Background Technology

[0002] The existing unloading machine control system is located in the control room, allowing only simple start-stop control. Operators cannot observe the vehicles on the outdoor unloading platform in real time, and cannot respond quickly to emergencies. Generally, before unloading operations, operators need to confirm that the vehicles are completely stopped before returning to the control room. However, with many vehicles, it is often impossible to ensure that every vehicle is checked. This poses a significant safety hazard, as the unloading machine may start before the vehicle is fully stopped, potentially leading to an accident. Summary of the Invention

[0003] This application provides a control device for a truck unloading machine, which solves the problem of inconvenient operation of existing truck unloading machine control devices. It has a simple structure and low cost, and has two interlocking protection systems: a pull rope switch and a card-operated power switch. This eliminates potential safety hazards during the unloading start-up process and unforeseen situations during the unloading process, ensuring the safety of vehicles, equipment and personnel. No operator confirmation is required when starting the truck unloading machine, realizing the linkage between indoor and outdoor operations and reducing the labor intensity of workers.

[0004] This utility model embodiment provides a control device for a truck unloading machine. The control device includes: a main circuit, which includes: a circuit breaker QF1 connected to the three-phase AC power supply in the main circuit; a contactor KM connected to the circuit breaker QF1; a thermal relay FR connected to the contactor KM; and an oil pump motor M connected to the thermal relay FR; and a control circuit, which includes: an air switch QF2 connected to the live wire in the main circuit; a fuse FU connected to the lower end of the air switch QF2; a ready indicator light HW connected to the lower end of the fuse FU; and a stop button SB1 connected to the lower end of the fuse FU; and a start button SB2 connected in parallel with the normally open contact of the contactor KM and then connected to the lower end of the stop button SB1. Connections include: a pull-rope switch K1, the upper end of which is connected to the lower end of the fuse FU; a card-operated power switch K2, the upper end of which is connected to the lower end of the fuse FU; an intermediate relay KA1, the upper end of which is connected to the lower end of the start button SB2, the upper end of which is connected to the lower end of the pull-rope switch K1, and the lower end of which is connected to the neutral wire of the main circuit; an intermediate relay KA2, the upper end of which is connected to the lower end of the normally closed point of the intermediate relay KA1, the lower end of which is connected to the upper end of the normally closed point of the thermal relay FR, the upper end of which is connected to the lower end of the card-operated power switch K2, and the lower end of which is connected to the neutral wire of the main circuit; and a running indicator light HG, the upper end of which is connected to the lower end of the normally closed point of the thermal relay FR after being connected in parallel with the coil of the contactor KM, and its lower end is connected to the neutral wire of the main circuit.

[0005] Preferably, the card-operated power switch K2 is installed on the column at the entrance of the unloading machine.

[0006] Preferably, the pull rope switch K1 is installed at the bottom of the unloading machine platform, and the pull rope switch K1 is activated when the unloading platform is raised to the highest set position.

[0007] The above-described one or more technical solutions in the embodiments of this utility model have at least one or more of the following technical effects:

[0008] This utility model provides a control device for a truck unloading machine. The control device includes: a main circuit, which includes: a circuit breaker QF1 connected to a three-phase AC power supply in the main circuit; a contactor KM connected to the circuit breaker QF1; a thermal relay FR connected to the contactor KM; and an oil pump motor M connected to the thermal relay FR. The control circuit includes: an air switch QF2 connected to the live wire in the main circuit; a fuse FU connected to the lower end of the air switch QF2; a ready indicator light HW connected to the lower end of the fuse FU; and a stop button SB1 connected to the lower end of the fuse FU; and a start button SB2 connected in parallel with the normally open contact of the contactor KM and then connected to the lower end of the stop button SB1. Connections include: a pull-rope switch K1, the upper end of which is connected to the lower end of the fuse FU; a card-operated power switch K2, the upper end of which is connected to the lower end of the fuse FU; an intermediate relay KA1, the upper end of which is connected to the lower end of the start button SB2, the upper end of which is connected to the lower end of the pull-rope switch K1, and the lower end of which is connected to the neutral wire of the main circuit; an intermediate relay KA2, the upper end of which is connected to the lower end of the normally closed point of the intermediate relay KA1, the lower end of which is connected to the upper end of the normally closed point of the thermal relay FR, the upper end of which is connected to the lower end of the card-operated power switch K2, and the lower end of which is connected to the neutral wire of the main circuit; and a running indicator light HG, the upper end of which is connected to the lower end of the normally closed point of the thermal relay FR after being connected in parallel with the coil of the contactor KM, and its lower end is connected to the neutral wire of the main circuit. This application discloses a control device for a truck unloading machine. It has a simple structure and low cost, and is equipped with two interlocking protection systems: a pull rope switch K1 and a card-operated power switch K2. This eliminates potential safety hazards during the start-up of the truck unloading machine and protects against emergencies during the unloading process, ensuring the safety of vehicles, equipment, and personnel. No operator confirmation is required when starting the truck unloading machine, and it achieves linkage between indoor and outdoor operations, reducing the labor intensity of workers.

[0009] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0011] Explanation of reference numerals in the attached diagram: Circuit breaker QF1; Contactor KM; Thermal relay FR; Oil pump motor M; Air switch QF2; Fuse FU; Ready indicator HW; Stop button SB1; Start button SB2; Normally open contact of contactor KM; Normally closed contact of intermediate relay KA1; Normally open contact of intermediate relay KA2; Normally closed contact of thermal relay FR; Contactor KM coil; Running indicator HG; Pull rope switch K1; Intermediate relay KA1 coil; Card-operated power switch K2; Intermediate relay KA2 coil. Detailed Implementation

[0012] This application provides a vehicle unloading machine control device that solves potential safety hazards during the unloading start-up process and unforeseen circumstances during the unloading process, ensuring the safety of vehicles, equipment, and personnel. When starting the unloading machine, no operator needs to be on-site to confirm, realizing the linkage between indoor and outdoor operations and reducing the labor intensity of workers.

[0013] The technical solution in this embodiment of the utility model has the following overall structure: The unloading machine control device includes: a main circuit, which includes: a circuit breaker QF1, connected to the three-phase AC power supply on the main circuit; a contactor KM, connected to the circuit breaker QF1; a thermal relay FR, connected to the contactor KM; an oil pump motor M, connected to the thermal relay FR; and a control circuit, which includes: an air switch QF2, the upper end of which is connected to the live wire on the main circuit; a fuse FU, the upper end of which is connected to the lower end of the air switch QF2; a ready indicator light HW, the upper end of which is connected to the lower end of the fuse FU; and a stop button SB1, the upper end of which is connected to the lower end of the fuse FU; and a start button SB2, which is connected in parallel with the normally open contact of the contactor KM and then connected to the stop button SB1. The following components are connected to the lower end: a pull-rope switch K1, the upper end of which is connected to the lower end of the fuse FU; a card-operated power switch K2, the upper end of which is connected to the lower end of the fuse FU; an intermediate relay KA1, the upper end of which is connected to the lower end of the start button SB2, the upper end of which is connected to the lower end of the pull-rope switch K1, and the lower end of which is connected to the neutral wire of the main circuit; an intermediate relay KA2, the upper end of which is connected to the lower end of the normally closed point of which is connected to the middle relay KA1, the lower end of which is connected to the upper end of the normally closed point of the thermal relay FR, the upper end of which is connected to the lower end of the card-operated power switch K2, and the lower end of which is connected to the neutral wire of the main circuit; and a running indicator light HG, the upper end of which is connected to the lower end of the normally closed point of the thermal relay FR after being connected in parallel with the coil of the contactor KM, and the lower end of which is connected to the neutral wire of the main circuit.

[0014] 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 embodiments of this utility model, not all embodiments. 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.

[0015] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0016] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0017] Example

[0018] This embodiment provides a control device for a truck unloading machine. Please refer to [link / reference]. Figure 1 The details are as follows:

[0019] The control device includes: a main circuit, comprising: a circuit breaker QF1 connected to the three-phase AC power supply in the main circuit; a contactor KM connected to the circuit breaker QF1; a thermal relay FR connected to the contactor KM; and an oil pump motor M connected to the thermal relay FR; and a control circuit, comprising: an air switch QF2 connected to the live wire in the main circuit; a fuse FU connected to the lower end of the air switch QF2; a ready indicator light HW connected to the lower end of the fuse FU; a stop button SB1 connected to the lower end of the fuse FU; a start button SB2 connected in parallel with the normally open contact of the contactor KM and then connected to the lower end of the stop button SB1; and a pull rope switch K1. The upper end of the pull cord switch K1 is connected to the lower end of the fuse FU; the upper end of the card-operated power switch K2 is connected to the lower end of the fuse FU; the upper end of the normally closed contact of the intermediate relay KA1 is connected to the lower end of the start button SB2, the upper end of the coil of the intermediate relay KA1 is connected to the lower end of the pull cord switch K1, and the lower end of the coil of the intermediate relay KA1 is connected to the neutral wire of the main circuit; the upper end of the normally open contact of the intermediate relay KA2 is connected to the lower end of the normally closed contact of the intermediate relay KA1, the lower end of the normally open contact of the intermediate relay KA2 is connected to the upper end of the normally closed contact of the thermal relay FR, the upper end of the coil of the intermediate relay KA2 is connected to the lower end of the card-operated power switch K2, and the lower end of the coil of the intermediate relay KA2 is connected to the neutral wire of the main circuit; the running indicator light HG is connected in parallel with the coil of the contactor KM, and its upper end is connected to the lower end of the normally closed contact of the thermal relay FR, and its lower end is connected to the neutral wire of the main circuit.

[0020] Furthermore, the card-operated power switch K2 is installed on the pillar at the entrance of the unloading machine.

[0021] Specifically, in use, the card-operated power switch K2 is installed on the pillar at the entrance of the unloading machine. The unloading machine cannot be started without inserting a card. Only after the vehicle has come to a complete stop, the driver confirms that there are no problems, and inserts the card into the corresponding power switch can the unloading machine be started. This achieves interlock protection, forcing the driver to confirm the vehicle. The operator cannot start the unloading machine without the driver inserting the card, thereby ensuring the safety of the vehicle, equipment, and personnel, and eliminating potential safety hazards during the unloading process. The remaining components are installed in the control cabinet in the control room.

[0022] Furthermore, the pull rope switch K1 is installed at the bottom of the unloading machine platform, and the pull rope switch K1 is activated when the unloading platform is raised to the highest set position.

[0023] Specifically, the pull rope switch K1 is installed at the bottom of the unloading machine platform. Under normal circumstances, it will not be activated to the maximum limit set by the unloading platform. It can be activated to an appropriate height according to the unloading situation. When the unloading platform is raised to the set maximum position, the pull rope switch K1 is triggered to cut off the control circuit and stop the oil pump motor M from running, preventing the unloading platform from being raised too high and causing an accident, thus protecting the safety during the unloading process.

[0024] The main working principle of this utility model is as follows: When the main circuit breaker QF1 closes, the control circuit circuit breaker QF2 closes, and the ready indicator light HW illuminates, indicating that the control circuit is energized and ready to start. When the pull rope switch K1 is not activated, it indicates that the unloading platform is normal. At this time, the coil of the intermediate relay KA1 is not energized, and the normally closed contact of the intermediate relay KA1 is closed. When the driver confirms that the vehicle is completely stopped, he inserts the card into the on-site card-operated power switch K2. The card-operated power switch K2 closes, and the coil of the intermediate relay KA2 is energized, and the normally open contact of the intermediate relay KA2 closes, indicating that the vehicle is stopped and ready to start. At this time, the operator presses the start button SB2. The control power passes through the circuit breaker QF2, the fuse FU, the stop button SB1, the start button SB2, the normally closed contact of the intermediate relay KA1 (closed at this time), the normally open contact of the intermediate relay KA2 (closed at this time), and the normally closed contact of the thermal relay FR, to the contactor KM coil. The contactor KM is energized, and at the same time, the running indicator light HG illuminates, and the normally open contact of the contactor KM closes, realizing the self-holding of the start button. At this time, the main contacts of contactor KM are closed, and the main circuit power supply passes through circuit breaker QF1, contactor KM, thermal relay FR, and then to oil pump motor M. The oil pump motor is energized and starts running, and the unloading machine begins to unload, completing the normal start-up process of the unloading machine.

[0025] After unloading is completed, the operator presses the stop button SB1 to cut off the power supply to the control circuit. The contactor KM is de-energized, the normally open contact of the contactor KM opens, the self-holding of the start button SB2 is disconnected, the main contact of the contactor KM opens, the power supply to the main circuit is cut off, the oil pump motor M stops running, and unloading is completed.

[0026] Without a card inserted, the on-site card insertion power switch K2 is open, the coil of intermediate relay KA2 is de-energized, the normally open contact of intermediate relay KA2 is open, the control circuit is disconnected, and the unloading machine cannot start. Only after the driver confirms that the vehicle is completely stopped and inserts the card into the on-site card insertion power switch K2, will K2 close, the coil of intermediate relay KA2 be energized, and the normally open contact of intermediate relay KA2 be closed. Only then can the unloading machine be started, thus ensuring the safety of the unloading machine's start-up.

[0027] The pull rope switch K1 will only be triggered when the unloading machine reaches the set maximum height. Under normal circumstances, it will not start to the set maximum height; it will start to an appropriate height according to the unloading situation. When the pull rope switch K1 is closed, the coil of the intermediate relay KA1 is energized, the normally closed contact of the intermediate relay KA1 opens, the control circuit is disconnected, and the unloading machine stops running. This indicates that the unloading machine has been raised to the highest position, thus protecting it from an accident caused by raising the unloading machine too high.

[0028] This unloading machine control device has two sets of interlocking protection systems, which protect the safety before the unloading machine starts and during the unloading process. It realizes the linkage between indoor and outdoor personnel, reduces the labor intensity of workers, eliminates potential safety hazards and emergencies during the unloading process, and ensures the safety of vehicles, equipment and personnel.

[0029] The above-described one or more technical solutions in the embodiments of this utility model have at least one or more of the following technical effects:

[0030] This utility model provides a control device for a truck unloading machine. The control device includes: a main circuit, which includes: a circuit breaker QF1 connected to the three-phase AC power supply in the main circuit; a contactor KM connected to the circuit breaker QF1; a thermal relay FR connected to the contactor KM; and an oil pump motor M connected to the thermal relay FR; and a control circuit, which includes: an air switch QF2 connected to the live wire in the main circuit; a fuse FU connected to the lower end of the air switch QF2; a ready indicator light HW connected to the lower end of the fuse FU; and a stop button SB1 connected to the lower end of the fuse FU; and a start button SB2 connected in parallel with the normally open contact of the contactor KM and then connected to the lower end of the stop button SB1. Connections include: a pull-rope switch K1, the upper end of which is connected to the lower end of the fuse FU; a card-operated power switch K2, the upper end of which is connected to the lower end of the fuse FU; an intermediate relay KA1, the upper end of which is connected to the lower end of the start button SB2, the upper end of which is connected to the lower end of the pull-rope switch K1, and the lower end of which is connected to the neutral wire of the main circuit; an intermediate relay KA2, the upper end of which is connected to the lower end of the normally closed point of the intermediate relay KA1, the lower end of which is connected to the upper end of the normally closed point of the thermal relay FR, the upper end of which is connected to the lower end of the card-operated power switch K2, and the lower end of which is connected to the neutral wire of the main circuit; and a running indicator light HG, the upper end of which is connected to the lower end of the normally closed point of the thermal relay FR after being connected in parallel with the coil of the contactor KM, and its lower end is connected to the neutral wire of the main circuit. This application discloses a control device for a truck unloading machine. It has a simple structure and low cost, and is equipped with two interlocking protection systems: a pull rope switch K1 and a card-operated power switch K2. This eliminates potential safety hazards and emergencies during the unloading process, ensuring the safety of vehicles, equipment, and personnel. No operator confirmation is required when starting the unloading machine, realizing the linkage between indoor and outdoor operations and reducing the labor intensity of workers.

[0031] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0032] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. A control device for a car unloader, characterized by comprising: The control device includes: The main circuit includes: Circuit breaker QF1, which is connected to the three-phase AC power on the main circuit; Contactor KM, which is connected to circuit breaker QF1; Thermal relay FR, which is connected to contactor KM; Oil pump motor M, wherein the oil pump motor M is connected to thermal relay FR; Control loop, the control loop comprising: Air switch QF2, the upper end of which is connected to the live wire in the main circuit; A fuse FU, the upper end of which is connected to the lower end of the air switch QF2; The indicator light HW is ready, with its upper end connected to the lower end of the fuse FU and its lower end connected to the neutral wire on the main circuit. Stop button SB1, the upper end of which is connected to the lower end of safety FU; Start button SB2, which is connected in parallel with the normally open contact of contactor KM and then connected to the lower end of stop button SB1; A pull cord switch K1, the upper end of which is connected to the lower end of the safety FU; Card-insertion power switch K2, the upper end of which is connected to the lower end of the fuse FU; Intermediate relay KA1, the upper end of the normally closed contact of intermediate relay KA1 is connected to the lower end of start button SB2, the upper end of the coil of intermediate relay KA1 is connected to the lower end of pull rope switch K1, and the lower end of the coil of intermediate relay KA1 is connected to the neutral wire on the main circuit. Intermediate relay KA2, the upper end of the normally open contact of intermediate relay KA2 is connected to the lower end of the normally closed contact of intermediate relay KA1, the lower end of the normally open contact of intermediate relay KA2 is connected to the upper end of the normally closed contact of thermal relay FR, the upper end of the coil of intermediate relay KA2 is connected to the lower end of the card-operated power switch K2, and the lower end of the coil of intermediate relay KA2 is connected to the neutral wire on the main circuit. The operation indicator light HG is connected in parallel with the coil of the contactor KM. Its upper end is connected to the lower end of the normally closed contact of the thermal relay FR, and its lower end is connected to the neutral wire on the main circuit.

2. The control device for an unloading machine according to claim 1, characterized in that, The card-operated power switch is installed on the pillar at the entrance of the unloading machine.

3. The control apparatus for an unloading machine according to claim 1, wherein The pull rope switch is installed at the bottom of the unloading machine platform. The pull rope switch is activated when the unloading platform is raised to the highest set position.

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