Power control system of lorry-mounted loading and unloading platform for heavy-load material transportation

Abstract

The invention relates to the technical field of transportation device control systems, in particular to a power control system of a lorry-mounted loading and unloading platform for heavy-load material transportation, which comprises a hydraulic system, an electrical system, the lorry-mounted loading and unloading platform, a front transition mechanism, a rolling platform and a supporting mechanism, the electrical system is electrically connected with the hydraulic system, the hydraulic system is connected with the front transition mechanism, the rolling platform and the supporting mechanism, the front transition mechanism, the rolling platform and the supporting mechanism are all connected with the vehicle-mounted loading and unloading platform, and the monitoring capacity of the device for the power system and load components connected with the power system is improved through the arrangement of the electrical system; when a fault occurs, the fault can be processed at the first time, and the fault is prevented from being expanded.

Description

Technical Field

[0001] The invention relates to the technical field of transport device control systems, and in particular to a power control system of a vehicle loading and unloading platform for transporting heavy-load materials. Background Art

[0002] The vehicle hydraulic system of the vehicle loading and unloading platform is a system that realizes the transmission and control of force through the hydraulic principle, and is widely used in various functions of the car. It mainly includes components such as hydraulic pumps, hydraulic oil, hydraulic cylinders, valves, etc., which can efficiently complete different actions. Its main components are: Hydraulic pump: converts mechanical energy into hydraulic energy and provides the flow of hydraulic oil. Hydraulic oil: As a transmission medium, hydraulic oil flows under high pressure and transmits force. Hydraulic cylinder: converts hydraulic energy into mechanical energy and pushes the piston or other components to complete the movement. Valve: Controls the flow direction, flow rate and pressure of hydraulic oil to ensure the normal operation of the system.

[0003] However, the prior art still has shortcomings. For example, patent number: CN201120419479.4 is a vehicle loading and unloading platform, which includes a column, a cargo board, a lifting slider, a fixing device, a power box and a lifting device. A guide groove is arranged on the column, and two columns are arranged and arranged to have their guide grooves arranged vertically facing each other through a fixing device. The lifting slider is arranged in the guide groove of the column, and the cargo board is arranged to be connected to the lifting slider in a snap-on manner. A lifting device is arranged on the column, and the lifting device is arranged to be connected to the power box, and the lifting slider is arranged to be connected to the lifting device. The power line of the power box is arranged to be connected to the power supply of the transport vehicle. The device has no electrical system and cannot monitor the working conditions of the relevant power equipment. After a fault occurs, it cannot be handled in time, which leads to the aggravation of the fault. Summary of the invention

[0004] The present invention provides a power control system and method for a vehicle loading and unloading platform for heavy-load material transportation, which are used to solve the problem raised by the background technology.

[0005] In order to achieve the above-mentioned invention objectives, the present invention provides the following technical solutions: a power control system for a vehicle-mounted loading and unloading platform for heavy-load material transportation, comprising: a hydraulic system, an electrical system, a vehicle-mounted loading and unloading platform, a front transition mechanism, a rolling platform and a supporting mechanism, wherein the hydraulic system and the electrical system are connected to the bottom of the vehicle-mounted loading and unloading platform, the electrical system is electrically connected to the hydraulic system, the hydraulic system is connected to the front transition mechanism, the rolling platform and the supporting mechanism, and the front transition mechanism, the rolling platform and the supporting mechanism are all connected to the vehicle-mounted loading and unloading platform.

[0006] Preferably, the rolling platform includes: a platform, a lifting mechanism, a hydraulic motor and a conveying mechanism. The vehicle loading and unloading platform is connected to the lifting mechanism, the lifting mechanism is connected to the platform, the platform is connected to the hydraulic motor, the output end of the hydraulic motor is connected to the conveying mechanism, and the conveying mechanism is connected to the platform.

[0007] Preferably, the conveying mechanism includes: a sprocket and a chain, the output end of the hydraulic motor is connected to a sprocket, the sprocket is rotatably connected to the platform, the sprocket is transmission-connected to another sprocket through a chain, the other sprocket is rotatably connected to the platform, the chain is arranged around the platform, and the hydraulic motor is connected to the hydraulic system through a pipeline.

[0008] Preferably, the bottom of the vehicle loading and unloading platform is rotatably connected to a wheel group mechanism, the supporting mechanism is specifically a hydraulic support leg, and a pair of hydraulic support legs are respectively connected to both ends of the vehicle loading and unloading platform, and the hydraulic support legs are connected to the hydraulic system through pipeline 2.

[0009] Preferably, the lifting mechanism includes: a lifting hydraulic cylinder, a guide rail, a lifting bracket, a second sprocket and a lifting chain. A pair of guide rails are installed on each side of the vehicle loading and unloading platform. The guide rails are slidably connected to the two sides of the lifting bracket. The bottom of the lifting bracket is rotatably connected to a second sprocket, and a lifting chain is connected to the second sprocket. One end of the lifting chain is connected to the vehicle loading and unloading platform, and the other end of the lifting chain is connected to the platform. The second guide rail on the side of the platform is slidably connected to the guide rail. A lifting hydraulic cylinder is installed on the vehicle loading and unloading platform, and the output end of the lifting hydraulic cylinder is connected to the lifting bracket. The lifting hydraulic cylinder is connected to the hydraulic system through a third pipeline.

[0010] Preferably, the front transition mechanism includes: a front transition plate, a scissors-type mechanism and a lifting hydraulic cylinder 2. The scissors-type mechanism is connected to the vehicle loading and unloading platform, the top of the scissors-type mechanism is connected to the front transition plate, the end of the lifting hydraulic cylinder 2 is hinged to the bottom of the front transition plate, the other end of the lifting hydraulic cylinder 2 is hinged to the vehicle loading and unloading platform, and the lifting hydraulic cylinder 2 is connected to the hydraulic system through a pipe 4.

[0011] Preferably, the hydraulic system includes: a hydraulic pump and a hydraulic box, and the hydraulic pump and the hydraulic box are installed at the bottom of the vehicle loading and unloading platform, one side of the hydraulic pump is connected to the hydraulic box, and the other side of the hydraulic pump is connected to pipeline, pipeline 2, pipeline 3 and pipeline 4, the hydraulic box is filled with hydraulic oil, the hydraulic pump is electrically connected to the electrical control system, and an air cooling mechanism is connected to the hydraulic box, and the air cooling mechanism is electrically connected to the electrical control system.

[0012] Preferably, the hydraulic oil is specifically PAG hydraulic oil.

[0013] Preferably, the electrical control system includes: a PLC controller and a human-machine interaction panel, and the PLC controller and the human-machine interaction panel are installed at the bottom of the vehicle loading and unloading platform, the PLC controller is electrically connected to the human-machine interaction panel, the PLC controller is electrically connected to the battery on the vehicle, the PLC controller is electrically connected to the hydraulic pump, and the PLC controller is electrically connected to the air cooling mechanism.

[0014] Preferably, it also includes: a pressure sensor, wherein a pressure sensor is installed in the pipeline, pressure sensor 2 is installed in pipeline 2, pressure sensor 3 is installed in pipeline 3, and pressure sensor 4 is installed in pipeline 4, the pressure sensor, pressure sensor 2, pressure sensor 3 and pressure sensor 4 are all electrically connected to the PLC controller, and solenoid valves, solenoid valve 2, solenoid valve 3 and solenoid valve 4 are respectively provided in the pipeline, pipeline 2, pipeline 3 and pipeline 4, and the solenoid valves, solenoid valve 2, solenoid valve 3 and solenoid valve 4 are all electrically connected to the PLC controller.

[0015] The beneficial effects of the present invention are as follows:

[0016] The setting of the electrical system increases the device's monitoring capability for the power system and its connected load components, so that when a fault occurs, the fault can be dealt with immediately to prevent it from expanding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the platform structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the lifting mechanism structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the front transition mechanism of the present invention.

[0021] Among them: vehicle loading and unloading platform 1, front transition mechanism 2, rolling platform 3, platform 4, lifting mechanism 5, transmission mechanism 6, sprocket 7, chain 8, wheel assembly mechanism 9, hydraulic support leg 10, lifting hydraulic cylinder 11, guide rail 12, lifting bracket 13, sprocket 2 14, lifting chain 15, front transition plate 16, scissor mechanism 17, lifting hydraulic cylinder 2 18, support mechanism 19, hydraulic motor 20. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example 1: Reference Figure 1-Figure 4A power control system for a vehicle-mounted loading and unloading platform for heavy-load material transportation includes: a hydraulic system, an electrical system, a vehicle-mounted loading and unloading platform 1, a front transition mechanism 2, a rolling platform 3 and a supporting mechanism 19. The bottom of the vehicle-mounted loading and unloading platform 1 is connected with the hydraulic system and the electrical system, the electrical system is electrically connected to the hydraulic system, the hydraulic system is connected to the front transition mechanism 2, the rolling platform 3 and the supporting mechanism 19, and the front transition mechanism 2, the rolling platform 3 and the supporting mechanism 19 are all connected to the vehicle-mounted loading and unloading platform 1.

[0024] The principles and beneficial effects of the above scheme are:

[0025] The vehicle loading and unloading platform 1 is hinged to the rear of the vehicle so as to move while the vehicle is moving. The vehicle loading and unloading platform 1 positions the vehicle itself through the support mechanism 19 and improves the stability of the device during loading. The vehicle loading and unloading platform 1 can control the hydraulic system through the electrical system to move the rolling platform 3. After adjusting the height of the rolling platform 3 to be the same as the height of the ground, the materials on the ground can be transferred to the rolling platform 3. Then, the height of the rolling platform 3 is adjusted again through the electrical system to make it the same as the height of the vehicle loading and unloading platform 1. Based on the amount of transported materials, the operator can choose to place the materials directly on the platform or transfer them to the front transition mechanism 2. Further, based on the amount of transported materials, the materials can be fixed on the front transition mechanism 2. The operator can transfer the materials to the vehicle by controlling the support mechanism 19 to reset after all the materials are loaded, or by adjusting the height of the front transition mechanism 2 through the electrical system. The operator can transfer the materials to the vehicle. After all the materials are loaded, the electrical system is used to control the support mechanism 19 to reset so that the loading and unloading platform 1 can move with the vehicle. The electrical system is set to control the hydraulic system to work, which reduces the difficulty of material transfer. During the loading process of materials, multiple mechanisms need to be adjusted. The electrical system realizes the power control of the entire device, greatly improves the automation effect of the device, and effectively reduces the labor intensity of the operator. Furthermore, the setting of the electrical system increases the device's monitoring ability for the power system and the load components connected to it, and when a fault occurs, the fault can be handled in the first time to prevent the fault from expanding.

[0026] Example 2: Reference Figure 1-Figure 4 The rolling platform 3 includes: a platform 4, a lifting mechanism 5, a hydraulic motor 20 and a conveying mechanism 6. The vehicle loading and unloading platform 1 is connected to the lifting mechanism 5, the lifting mechanism 5 is connected to the platform 4, the platform 4 is connected to the hydraulic motor 20, the output end of the hydraulic motor 20 is connected to the conveying mechanism 6, and the conveying mechanism 6 is connected to the platform 4.

[0027] The principles and beneficial effects of the above scheme are:

[0028] After the platform 4 is moved to the ground by the lifting mechanism 5, the electrical system controls the hydraulic system to work, that is, to drive the hydraulic motor 20. The hydraulic motor 20 drives the conveying mechanism 6 to move the materials on the ground to the platform 4, which reduces the labor intensity of the operator and fully utilizes the power of the hydraulic system in the device, thereby achieving the purpose of efficient operation of the device and improving the practicability of the device.

[0029] Example 3: Reference Figure 1-Figure 4 The transmission mechanism 6 includes: a sprocket 7 and a chain 8. The output end of the hydraulic motor 20 is connected to the sprocket 7, the sprocket 7 is rotatably connected to the platform 4, the sprocket 7 is transmission-connected to another sprocket 7 through the chain 8, the other sprocket 7 is rotatably connected to the platform 4, the chain 8 is arranged around the platform 4, and the hydraulic motor 20 is connected to the hydraulic system through a pipeline.

[0030] The principles and beneficial effects of the above scheme are:

[0031] When the hydraulic motor 20 rotates, the hydraulic system controls it through the pipeline. After the hydraulic motor 20 starts working, its output end drives the sprocket 7 to rotate. Since the two sprockets 7 are connected by the chain 8 transmission, and the chain 8 is arranged around the platform 4, when the chain 8 is working, the top of the chain 8 is arranged above the platform 4, which provides convenience for the transportation of materials. In actual production, the number of chains 8 can be set to one or more, and the number of chains 8 can be added or reduced based on the load-bearing weight or size parameters of the platform 4. The number of sprockets 7 connected to the same chain 8 can also be set based on the above parameters, which further increases the practicality of the device itself. The chain 8 itself has high strength, high durability, adaptability to harsh environments, flexible load-bearing methods and low maintenance costs. Therefore, when the chain 8 cooperates with the platform 4 to carry materials, the probability of damage to itself is extremely low, and even if damage is caused, it can be used in various processes. It can be quickly repaired or replaced under any circumstances; it can be known from the structure of the chain 8 itself that it has multiple chain links, which are connected by pins, so it has multiple depressions and protrusions in the straight direction. It can be further known that the friction force of the mechanism on the bottom of the material is extremely large. Therefore, when the material is transported, the chain 8 on the platform 4 can provide a great friction force on the bottom of the material, which is convenient for preventing the five loads from moving forwards or backwards or left and right during transportation. It can be further known that the difficulty of fixing the material on the platform 4 will be greatly reduced; since the chain 8 is arranged around the platform 4, there is a gap between its upper side and the top surface of the platform 4. After the material loading is completed, it can be checked by visual inspection whether the part where the chain 8 is not connected to the sprocket 7 is in a state of collapse downward, and then it can be judged whether the internal part of the material is damaged. During the loading process, the existence of the gap can increase the distance between the bottom of the material and the ground. When there is water on the ground, the bottom of the material that has not been waterproofed can be prevented from being damaged.

[0032] Example 4: Reference Figure 1-Figure 4 The bottom of the vehicle loading and unloading platform 1 is rotatably connected to a wheel group mechanism 9, and the supporting mechanism 19 is specifically a hydraulic support leg 10. A pair of hydraulic support legs 10 are respectively connected to both ends of the vehicle loading and unloading platform 1, and the hydraulic support legs 10 are connected to the hydraulic system through a pipeline 2.

[0033] The principles and beneficial effects of the above scheme are:

[0034] The wheel group mechanism that is rotatably connected to the vehicle loading and unloading platform 1 increases the distance between the vehicle loading and unloading platform 1 and the ground, preventing the hydraulic system or electrical system from being hit during driving; before the platform 4 moves downward, the hydraulic system controls the hydraulic support legs 10 to move downward through the pipeline 2, thereby fixing the vehicle loading and unloading platform 1, increasing the stability of the vehicle loading and unloading platform 1 during the material loading and unloading process, and can also adjust the vehicle loading and unloading platform 1 to a horizontal state, preventing the device from overturning during the material loading and unloading process.

[0035] Example 5: Reference Figure 1-Figure 4 The lifting mechanism 5 includes: a lifting hydraulic cylinder 11, a guide rail 12, a lifting bracket 13, a sprocket wheel 14 and a lifting chain 15. A pair of guide rails 12 are installed on each side of the vehicle loading and unloading platform 1. The guide rails 12 are slidably connected to the two sides of the lifting bracket 13. The bottom of the lifting bracket 13 is rotatably connected with a sprocket wheel 14. The sprocket wheel 14 is connected to the lifting chain 15. One end of the lifting chain 15 is connected to the vehicle loading and unloading platform 1, and the other end of the lifting chain 15 is connected to the platform 4. The guide rail 2 on the side of the platform 4 is slidably connected to the guide rail 12. A lifting hydraulic cylinder 11 is installed on the vehicle loading and unloading platform 1, and the output end of the lifting hydraulic cylinder 11 is connected to the lifting bracket 13. The lifting hydraulic cylinder 11 is connected to the hydraulic system through a pipeline 3.

[0036] The principles and beneficial effects of the above scheme are:

[0037] The lifting of the platform 4 is driven by the other end of the lifting chain 15. Since the lifting hydraulic cylinder 11 is connected to the hydraulic system through the pipeline three, and the output end of the lifting hydraulic cylinder 11 is connected to the lifting bracket 13, the hydraulic system can control the lifting hydraulic cylinder 11 through the pipeline three to adjust the height of the lifting bracket 13. After the height of the lifting bracket 13 changes, the other end of the lifting chain 15 drives the platform 4 to move through the guidance of the sprocket two 14. By setting the lifting hydraulic cylinder 11 to be connected to the hydraulic system through the pipeline three, the device further improves the utilization of its internal power and improves the device's ability to control power.

[0038] Example 6: Reference Figure 1-Figure 4The front transition mechanism 2 includes: a front transition plate 16, a scissor mechanism 17 and a lifting hydraulic cylinder 18. The scissor mechanism 17 is connected to the vehicle loading and unloading platform 1, and the top of the scissor mechanism 17 is connected to the front transition plate 16. The bottom of the front transition plate 16 is hinged with the end of the lifting hydraulic cylinder 18. The other end of the lifting hydraulic cylinder 18 is hinged to the vehicle loading and unloading platform 1, and the lifting hydraulic cylinder 18 is connected to the hydraulic system through a pipeline 4.

[0039] The principles and beneficial effects of the above scheme are:

[0040] The hydraulic system adjusts the height of the lifting hydraulic cylinder 2 18 through pipeline 4, thereby driving the height of the front transition plate 16 to be adjusted. The scissor mechanism 17 plays a guiding role in the process of adjusting the height of the front transition plate 16. The hydraulic system is set to control the lifting hydraulic cylinder 2 18 through pipeline 4, which further improves the device's ability to control power.

[0041] Example 7: Reference Figure 1-Figure 4 The hydraulic system includes: a hydraulic pump and a hydraulic box. The hydraulic pump and the hydraulic box are installed at the bottom of the vehicle loading and unloading platform 1. One side of the hydraulic pump is connected to the hydraulic box, and the other side of the hydraulic pump is connected to pipeline, pipeline 2, pipeline 3 and pipeline 4. The hydraulic box is filled with hydraulic oil. The hydraulic pump is electrically connected to the electrical control system. The hydraulic box is connected to an air cooling mechanism, and the air cooling mechanism is electrically connected to the electrical control system.

[0042] The principles and beneficial effects of the above scheme are:

[0043] The hydraulic pump can output the hydraulic oil in the hydraulic box through pipeline, pipeline 2, pipeline 3 and pipeline 4 to the load mechanism connected to it, and then control the mechanism connected to it through different load mechanisms; the air cooling mechanism is electrically connected to the electrical control system, so as to cool the hydraulic oil in the hydraulic box when the ambient temperature of the device is high, so as to ensure that the fluidity of the hydraulic oil when working in a high temperature environment does not exceed its normal working value.

[0044] Example 8: Reference Figure 1-Figure 4 , the hydraulic oil is specifically PAG hydraulic oil.

[0045] The principles and beneficial effects of the above scheme are:

[0046] The device uses PAG hydraulic oil as the medium of the power system. PAG hydraulic oil itself has extremely strong low-temperature resistance and the lower limit of the temperature range can be as low as -50°C or lower. Therefore, the device can use the hydraulic oil filled in the hydraulic oil tank to drive the load mechanism in high or low temperature environments at the same time, which greatly improves the ability of the device to work under different working conditions and further improves the practicability of the device.

[0047] Example 9: Reference Figure 1-Figure 4 The electrical control system includes: a PLC controller and a human-machine interaction panel. The PLC controller and the human-machine interaction panel are installed at the bottom of the vehicle loading and unloading platform 1. The PLC controller is electrically connected to the human-machine interaction panel, the PLC controller is electrically connected to the battery on the vehicle, the PLC controller is electrically connected to the hydraulic pump, and the PLC controller is electrically connected to the air cooling mechanism.

[0048] The principles and beneficial effects of the above scheme are:

[0049] The PLC controller can store the program in advance. The power of the PLC controller comes from the battery on the vehicle. The human-machine interaction panel, which serves as the operating terminal, can control the air cooling mechanism and the hydraulic pump through the PLC controller. The human-machine interaction panel is specifically a display with buttons. The mechanism greatly improves the convenience of the device during operation and reduces the complexity of the device. When the parts in the mechanism are damaged, they can be quickly replaced and repaired.

[0050] Example 10: Reference Figure 1-Figure 4 , also includes: a pressure sensor, a pressure sensor is installed in the pipeline, a pressure sensor 2 is installed in pipeline 2, a pressure sensor 3 is installed in pipeline 3, and a pressure sensor 4 is installed in pipeline 4, the pressure sensor, pressure sensor 2, pressure sensor 3 and pressure sensor 4 are all electrically connected to the PLC controller, and the pipeline, pipeline 2, pipeline 3 and pipeline 4 are respectively provided with an electromagnetic valve, an electromagnetic valve 2, an electromagnetic valve 3 and an electromagnetic valve 4, and the electromagnetic valve, electromagnetic valve 2, electromagnetic valve 3 and electromagnetic valve 4 are all electrically connected to the PLC controller.

[0051] The principles and beneficial effects of the above scheme are:

[0052] Since the load of the hydraulic system works independently, multiple solenoid valve parts are set up. The corresponding solenoid valve parts can be opened by the PLC controller to conduct a pipeline structure. After the pipeline structure is conducted, the signal fed back by the corresponding pressure sensor parts is monitored by the PLC controller to prevent the actual pressure of the load mechanism from being higher than the safe working pressure; at the same time, the preset value of the corresponding pressure sensor part can be compared with the pressure value in the pipeline structure, and then the displacement stroke of the output end of the corresponding load mechanism can be monitored to determine whether it has reached the corresponding displacement stroke; the specific model of the pressure sensor is: GML670, and it is a strain gauge pressure sensor. The pressure sensor parts are subjected to The uniform increase in pressure can be converted into a uniformly changing electrical signal and fed back to the PLC controller to monitor the pressure changes in real time. The reason for using this sensor is low cost, simple structure, and high reliability. It can also be widely used in various fields as a common component. It can be further known that its procurement cost is low and the same type of sensor is highly replaceable. Therefore, in the actual working process, this sensor greatly reduces the cost of the device and the difficulty of replacing parts, which is of great significance to the practicality of the device. Based on the solutions of other embodiments, it can be known that the chain 8 can provide friction to the bottom of the material after stopping working. At this time, the hydraulic motor 20 is in a locked state. However, there are still problems in the prior art. The disadvantage is that the locking of the existing hydraulic motor parts can only be achieved by the internal locking device, which greatly increases the complexity of the parts and also affects the procurement cost of the parts. This solution adopts a hydraulic motor 20 connected to the hydraulic oil tank through a pipeline, and the hydraulic pump provides power to the hydraulic oil. The solenoid valve in the pipeline can be implemented by the PLC controller to perform the switching action. Therefore, when the hydraulic motor 20 finishes working, the solenoid valve can be controlled to close the pipeline. After the hydraulic oil in the pipeline stops flowing, the output end of the hydraulic motor 20 stops working synchronously, thereby realizing the locking of the chain 8. When the chain 8 is locked, since the hydraulic oil has a certain low compressibility, the locked chain 8 has strong stability, which can prevent the movement of materials from driving the chain 8 or the hydraulic The movement of the output end of the motor 20 improves the safety of materials during transportation; at the same time, when the PLC controller closes the solenoid valve, the hydraulic pump stops working synchronously, but there is still flowing hydraulic oil in the pipeline. Therefore, when the solenoid valve is closed, it is affected by the inertia of the hydraulic oil, and the closing of the solenoid valve is not instantaneous but uniform, and the locking process of the hydraulic motor 20 is uniform, that is, its output end gradually changes from a rotating state to a locked state. Therefore, the chain 8 of the device slowly reduces its speed before stopping moving, thereby preventing materials from being thrown out of the device due to excessive inertia. Based on the above principle, it can be known that the pipeline mechanism controlled by other solenoid valve parts can also uniformly reduce the movement speed of the connected load, thereby improving the overall safety of the device;This application adopts the GML670 sensor. When the signal fed back to the PLC controller does not change at a uniform speed, it can be known that the pressure it is subjected to is unstable. At this time, it can be determined that there are bubbles in the hydraulic oil, or other liquids in the hydraulic oil, or gas and liquid exist in the hydraulic oil at the same time, or there is a leakage point in the pipeline structure that causes the signal fluctuation phenomenon. At this time, the pipeline structure, or the connection between the pipeline structure and the load mechanism and the hydraulic system can be directly observed to see if there is a leakage point. If so, the fault can be eliminated. When the above fault does not exist, it can be considered that there is a mixture inside the hydraulic oil. When the mixture is in the gas phase, specifically bubbles, the air cooling mechanism can be started first to cool the hydraulic oil tank. If the signal returns to normal, the bubble rupture fault is eliminated. If the above fault still exists, it can be eliminated by adding desiccant to the hydraulic oil tank. The above working process is all done through The solenoid valve parts, pressure sensor parts, PLC controller and human-machine interaction panel in this scheme are implemented; in addition, the temperature sensor is omitted in the device. It is known from common knowledge that when the hydraulic oil is affected by temperature changes, the fluidity of the hydraulic oil increases sharply and the viscosity decreases, which leads to a corresponding decrease in the pressure feedback of the pressure sensor parts during the hydraulic pump's use of the same power to transport the hydraulic oil. At this time, the hydraulic oil can be quickly cooled by the cooling mechanism to prevent adverse factors such as: reduced working efficiency of the load mechanism, accelerated oxidation of the hydraulic oil, wear and leakage of parts, etc. This scheme, on the basis of increasing real-time monitoring of the device, can also alarm the fault through the human-machine interaction panel. At the same time as the alarm, the system performs preliminary troubleshooting to reduce the operator's maintenance difficulty, and at the same time greatly improves the integration effect of the device. ;

[0053] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A power control system for a vehicle loading and unloading platform for heavy-load material transportation, characterized in that: include: A hydraulic system, an electrical system, a vehicle-mounted loading and unloading platform (1), a front transition mechanism (2), a rolling platform (3) and a supporting mechanism (19); the bottom of the vehicle-mounted loading and unloading platform (1) is connected with the hydraulic system and the electrical system; the electrical system is electrically connected to the hydraulic system; the hydraulic system is connected to the front transition mechanism (2), the rolling platform (3) and the supporting mechanism (19); and the front transition mechanism (2), the rolling platform (3) and the supporting mechanism (19) are all connected to the vehicle-mounted loading and unloading platform (1).

2. The power control system of a vehicle loading and unloading platform for heavy-load material transportation according to claim 1 is characterized in that: The rolling platform (3) comprises: a platform (4), a lifting mechanism (5), a hydraulic motor (20) and a conveying mechanism (6); the vehicle-mounted loading and unloading platform (1) is connected to the lifting mechanism (5), the lifting mechanism (5) is connected to the platform (4), the platform (4) is connected to the hydraulic motor (20), the output end of the hydraulic motor (20) is connected to the conveying mechanism (6), and the conveying mechanism (6) is connected to the platform (4).

3. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 2, characterized in that: The transmission mechanism (6) comprises: a sprocket (7) and a chain (8); the output end of the hydraulic motor (20) is connected to the sprocket (7); the sprocket (7) is rotationally connected to the platform (4); the sprocket (7) is transmission-connected to another sprocket (7) through the chain (8); the other sprocket (7) is rotationally connected to the platform (4); the chain (8) is arranged around the platform (4); and the hydraulic motor (20) is connected to the hydraulic system through a pipeline.

4. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 2, characterized in that: The bottom of the vehicle-mounted loading and unloading platform (1) is rotatably connected to a wheel assembly mechanism (9); the supporting mechanism (19) is specifically a hydraulic support leg (10); a pair of hydraulic support legs (10) are respectively connected to both ends of the vehicle-mounted loading and unloading platform (1); and the hydraulic support legs (10) are connected to the hydraulic system via a second pipeline.

5. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 4, characterized in that: The lifting mechanism (5) comprises: a lifting hydraulic cylinder (11), a guide rail (12), a lifting bracket (13), a second sprocket (14) and a lifting chain (15). A pair of guide rails (12) are respectively installed on both sides of the vehicle loading and unloading platform (1). The guide rails (12) are slidably connected to both sides of the lifting bracket (13). The bottom of the lifting bracket (13) is rotatably connected to the second sprocket (14). The second sprocket (14) is connected to the lifting chain (15). One end of the lifting chain (15) is connected to the vehicle loading and unloading platform (1), and the other end of the lifting chain (15) is connected to the platform (4). The second guide rail on the side of the platform (4) is slidably connected to the guide rail (12). The vehicle loading and unloading platform (1) is equipped with a lifting hydraulic cylinder (11). The output end of the lifting hydraulic cylinder (11) is connected to the lifting bracket (13). The lifting hydraulic cylinder (11) is connected to the hydraulic system through a third pipeline.

6. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 5, characterized in that: The front transition mechanism (2) comprises: a front transition plate (16), a scissor mechanism (17) and a lifting hydraulic cylinder (18); the scissor mechanism (17) is connected to the vehicle loading and unloading platform (1); the top of the scissor mechanism (17) is connected to the front transition plate (16); the bottom of the front transition plate (16) is hinged with the end of the lifting hydraulic cylinder (18); the other end of the lifting hydraulic cylinder (18) is hinged to the vehicle loading and unloading platform (1); and the lifting hydraulic cylinder (18) is connected to the hydraulic system via a fourth pipeline.

7. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 6, characterized in that: The hydraulic system comprises: a hydraulic pump and a hydraulic box. The hydraulic pump and the hydraulic box are installed at the bottom of the vehicle loading and unloading platform (1). One side of the hydraulic pump is connected to the hydraulic box, and the other side of the hydraulic pump is connected to the pipeline, pipeline 2, pipeline 3 and pipeline 4. The hydraulic box is filled with hydraulic oil. The hydraulic pump is electrically connected to the electrical control system. The hydraulic box is connected to an air cooling mechanism, and the air cooling mechanism is electrically connected to the electrical control system.

8. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 7, characterized in that: The hydraulic oil is specifically PAG hydraulic oil.

9. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 7, characterized in that: The electrical control system comprises: a PLC controller and a human-machine interaction panel. The PLC controller and the human-machine interaction panel are installed at the bottom of the vehicle loading and unloading platform (1). The PLC controller is electrically connected to the human-machine interaction panel, the PLC controller is electrically connected to a battery on the vehicle, the PLC controller is electrically connected to a hydraulic pump, and the PLC controller is electrically connected to an air cooling mechanism.

10. A power control system for a vehicle loading and unloading platform for heavy-load material transportation according to claim 7, characterized in that: Also includes: The pressure sensor is installed in the pipeline, the pressure sensor 2 is installed in the pipeline 2, the pressure sensor 3 is installed in the pipeline 3, and the pressure sensor 4 is installed in the pipeline 4. The pressure sensor, pressure sensor 2, pressure sensor 3 and pressure sensor 4 are all electrically connected to the PLC controller. The pipeline, pipeline 2, pipeline 3 and pipeline 4 are respectively provided with an electromagnetic valve, an electromagnetic valve 2, an electromagnetic valve 3 and an electromagnetic valve 4. The electromagnetic valve, electromagnetic valve 2, electromagnetic valve 3 and electromagnetic valve 4 are all electrically connected to the PLC controller.

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