Self-leveling anti-lodging self-loading and unloading device

Abstract

A kind of self-leveling anti-lodging self-loading and unloading equipment, including equipment body and PLC controller, the equipment body is installed with the vertical door that spreads out outward around, lifting leg is installed on the outside of vertical door to support the lifting of equipment body, when vertical door spreads out, lifting leg rises, equipment body is lifted, lifting leg is retracted, equipment body is lowered, the lower end of lifting leg is universally articulated with footing, stress monitoring assembly is arranged in footing to detect the ground pressure of footing, PLC controller is arranged on equipment body, PLC controller is respectively connected with each lifting leg and each stress monitoring assembly signal, when vertical door closes, vertical door is attached or embedded with equipment body, the outer side of vertical door is flush with the side of equipment body, lifting leg is housed in equipment body.The present application is designed scientifically, simple structure, can level equipment body, ensure that each lifting leg is balanced, can prevent equipment body from tilting or lodging to the greatest extent, ensure that equipment body is safely self-loading and unloading.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to a self-leveling, anti-tipping, and self-loading / unloading device. Background Technology

[0002] Large and heavy equipment is often bulky and heavy, requiring cranes or forklifts for loading and unloading during transport, increasing transportation costs. In remote areas, renting cranes or forklifts is usually inconvenient, making loading and unloading equipment a challenge. Therefore, the development of self-loading and unloading equipment has increased in recent years. Self-loading and unloading equipment effectively solves the problem of autonomous loading and unloading at different work points, promoting its engineering application and helping to increase its market share.

[0003] The self-loading and unloading function of self-loading and unloading equipment generally relies on four liftable outriggers mounted on the equipment itself. When the outriggers are raised, the equipment is lifted, allowing the truck bed to move underneath it. When the outriggers are retracted, the equipment falls onto the truck bed, completing automatic loading. For unloading, the outriggers are raised again, the equipment is lifted, the truck bed moves away from underneath, and then the outriggers are retracted, lowering the equipment to the ground, completing automatic unloading. However, these self-loading and unloading devices have a drawback: if the four outriggers are not evenly stressed, or if the equipment supported by the outriggers is not level, the equipment is prone to tilting, potentially leading to collapse and accidents. This is more likely to occur on uneven ground with potholes, because on uneven ground, the outriggers are raised to different heights, resulting in some outriggers being stressed while others are not, which is not easily noticeable to the naked eye. Therefore, a key aspect of this type of self-loading and unloading equipment is ensuring that the equipment is level and that the four outriggers are evenly stressed. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a self-leveling, anti-tipping, and self-loading / unloading device. This invention is scientifically designed and has a simple structure. It can level the device body, ensure that each lifting leg is subjected to balanced force, and prevent the device body from tilting or falling over to the greatest extent possible, thus ensuring the safe self-loading and unloading of the device body.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A self-leveling, anti-tipping, and self-loading / unloading device includes a device body and a PLC controller. The device body has outward-opening doors around its perimeter. Lifting legs are installed on the outer edges of the doors to support the lifting and lowering of the device body. When the doors are open, the lifting legs rise, raising the device body; when the doors are retracted, the device body is lowered. The lower ends of the lifting legs are universally hinged to footings, which contain force monitoring components to detect the ground pressure. The PLC controller is mounted on the device body and is connected to each lifting leg and each force monitoring component. When the doors are closed, they fit snugly or are embedded in the device body, with the outer side of the doors flush with the side of the device body. The lifting legs are retracted into the device body.

[0006] The force monitoring component includes an airbag, a disc spring, and a pressure block. The foot assembly consists of a foot cover and a foot base. A vertically oriented central hole is formed in the center of the foot base. A circumferential groove is formed on the lower side of the inner circumference of the central hole, and a retaining spring is held within the groove. The outer circumference of the retaining spring is in close contact with the inner circumference of the groove bottom. The inner diameter of the retaining spring is smaller than the inner diameter of the central hole. The airbag, disc spring, and pressure block are arranged concentrically from top to bottom within the central hole, positioned between the foot cover and the retaining spring. The inner diameter of the foot cover... The top surface presses tightly against the outer edge of the top of the airbag, the bottom of the airbag presses tightly against the top of the disc spring, the bottom of the disc spring presses tightly against the top of the pressure block, the outer edge of the bottom of the pressure block presses tightly against the inner edge of the top of the retaining spring, a protrusion is integrally formed in the center of the bottom of the pressure block, the protrusion passes downward through the retaining spring and extends out of the lower end of the center hole, the bottom of the protrusion protrudes out of the bottom of the foot base, a pressure gauge is provided on the airbag, and a receiving groove matching the pressure gauge is provided on the foot cover, and the PLC controller and the pressure gauge are connected by wireless signal transmission.

[0007] The equipment body has storage cavities with open lower and outer sides at all four corners. Four vertical doors are respectively hinged to the outer openings of the four storage cavities. The inner bottom of the storage cavities is equipped with telescopic rods that drive the opening and closing of the vertical doors. The PLC controller is connected to the telescopic rods. When the vertical doors are closed, the lifting legs are stored in the corresponding storage cavities.

[0008] Both the telescopic mast and the lifting outriggers are hydraulic cylinders, and the equipment itself is equipped with a hydraulic pump station system that provides hydraulic power to the telescopic mast and the lifting outriggers.

[0009] Both the telescopic mast and the lifting outriggers are electrically operated, and the equipment itself is equipped with a power supply system that provides power to the telescopic mast and the lifting outriggers.

[0010] The equipment body is equipped with a level, and the level line of the level is parallel to the base plate or floor of the equipment body. The PLC controller is connected to the level signal.

[0011] This invention possesses significant substantive features and remarkable progress compared to existing technologies. Specifically, during operation, the PLC controller independently controls the extension of each telescopic rod, unfolding each door and allowing the four lifting outriggers to rotate out of their respective storage cavities. Then, based on the signal from the level instrument, leveling is performed to ensure the equipment body is in a horizontal position. Specifically, the leveling action involves: adjusting the height of the four lifting outriggers sequentially via the PLC controller according to the level instrument signal until the equipment body is horizontal; the leveling action stops when the level instrument detects a horizontal signal. Then, based on the readings of each pressure gauge, the height of the corresponding lifting outrigger is finely adjusted. If any lifting outrigger is not providing support at this point... The corresponding airbag pressure value will be relatively small. By adjusting the height of the lifting outrigger, the outrigger is made to exert force, thereby supporting the entire container. That is, the pressure values ​​of each pressure gauge are basically the same, so each lifting outrigger is under force and the force is balanced. Even on uneven ground, the above adjustment process is still applicable. In this way, the equipment body can be kept horizontal, and each lifting outrigger is under force and the force is balanced. This can prevent the equipment body from tilting or falling to the greatest extent, and ensure the safe self-loading and unloading of the equipment body. The invention is scientifically designed and has a simple structure. It can level the equipment body and prevent the equipment body from tilting or falling to the greatest extent, ensuring the safe self-loading and unloading of the equipment body.

[0012] The force applied to the lifting outriggers is determined by the readings of pressure gauges. Specifically, when the lifting outriggers are under force, the corresponding base supports are supported on the ground, and the corresponding protrusions are pressed tightly against the ground. Under pressure, the protrusions move upward relative to the bases until their bottoms are flush with the bases. This causes the pressure block to press upward against the disc spring, which in turn presses upward against the airbag. The disc spring is flattened under the combined action of the pressure block and the airbag, causing the airbag to deform under pressure. This increases the air pressure inside the airbag. The pressure change inside the airbag is measured in real time by the corresponding pressure gauge and wirelessly transmitted to the PLC controller. The PLC controller can then monitor the airbag pressure and determine the force applied to the lifting outriggers. Attached Figure Description

[0013] Figure 1 This is an axial view of the present invention.

[0014] Figure 2 This is a structural schematic diagram of the force monitoring component of the present invention when the lifting outrigger is not under force support.

[0015] Figure 3 This is a schematic diagram of the force monitoring component for the lifting outrigger of the present invention when it is supported by force. Figure 4 This is a schematic diagram of the working state of the present invention on uneven ground.

[0016] Figure 5 yes Figure 1 Enlarged view of a portion of point A in the middle.

[0017] Figure 6 yes Figure 1 Enlarged view of section B in the middle. Detailed Implementation

[0018] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0019] Example 1 like Figure 1-6 As shown, a self-leveling, anti-tipping, and self-loading / unloading device includes a device body 1 and a PLC controller. Each of the four corners of the device body 1 has a storage cavity 3 with openings on both the lower and outer sides. Each of the four storage cavities 3 has an outwardly opening door 4 hinged to its outer opening. A telescopic rod 5 is installed at the bottom of the inner side of each storage cavity 3 to drive the opening and closing of the door 4. Lifting legs 6 are vertically installed on the outer edges of each of the four doors 4 to support the lifting and lowering of the device body 1. When the door 4 is open, the lifting legs 6 rise, raising the device body 1; when the lifting legs 6 are retracted, the device body 1 is lowered. When lowered, the lower ends of the four lifting outriggers 6 are all universally hinged with foot 2. Each foot 2 is equipped with a force monitoring component to detect the ground pressure of the foot 2. A level 7 is installed on the equipment body 1. A PLC controller is installed on the equipment body and is connected to each telescopic rod 5, each lifting outrigger 6, each force monitoring component, and the level 7. When the door 4 is closed, the door 4 is flush with or fitted into the equipment body 1, and the outer side of the door 4 is flush with the side of the equipment body 1. The lifting outriggers 6 are stored in the corresponding storage cavities 3. The level 7 should be parallel to the bottom plate or floor of the equipment body 1. The position can be set at the bottom, inside the space, or at the top of the equipment body 1 (the center of the bottom, the center of the top, and the center of the floor are all the best setting locations).

[0020] The force monitoring component includes an airbag 8, a disc spring 9, and a pressure block 14. The foot 2 consists of a foot cover 12 and a foot base 13. The center of the foot base 13 has a vertically open central hole 15. The lower part of the inner circumference of the central hole 15 has an annular groove. A retaining spring 16 is engaged in the annular groove. The outer circumference of the retaining spring 16 is in close contact with the inner circumference of the bottom of the annular groove. The inner diameter of the retaining spring 16 is smaller than the inner diameter of the central hole 15. The airbag 8, disc spring 9, and pressure block 14 are arranged in a concentric order from top to bottom within the central hole 15 and are located between the foot cover 12 and the foot base 13. Between the springs 16, the inner top surface of the foot cover 12 presses tightly against the outer edge of the top of the airbag 8, the bottom of the airbag 8 presses tightly against the top of the disc spring 9, the bottom of the disc spring 9 presses tightly against the top of the pressure block 14, and the outer edge of the bottom of the pressure block 14 presses tightly against the inner edge of the top of the retaining spring 16. A protrusion 17 is integrally formed in the center of the bottom of the pressure block 14. The protrusion 17 passes downward through the retaining spring 16 and extends out of the lower end of the central hole 15. The bottom of the protrusion 17 protrudes from the bottom of the foot base 13. A pressure gauge 11 is provided on the airbag 8, and a receiving groove 10 matching the pressure gauge 11 is provided on the foot cover 12. The PLC controller and the pressure gauge 11 are connected via wireless signal transmission. The optimal configuration for the pressure gauge 11 is as follows: the pressure gauge 11 is located at the center of the top of the airbag 8, and a through hole is provided in the center of the foot cover 12, in which the pressure gauge 11 is housed.

[0021] Both the telescopic boom 5 and the lifting outrigger 6 are hydraulic cylinders, and the main body 1 is equipped with a hydraulic pump station system that provides hydraulic power to the telescopic boom 5 and the lifting outrigger 6.

[0022] The PLC controller, level 7, foot 2, airbag 8, pressure gauge 11, disc spring 9, and hydraulic pump station system are all conventional technologies. The PLC controller, hydraulic pump station system, and related hydraulic pipelines and hydraulic valves implied in this invention are not shown in the figure. These are all conventional components, and their specific structures and working principles will not be described in detail. The automatic control parts in this invention are all existing technologies and do not involve new computer programs.

[0023] During operation, the PLC controller controls the extension of each telescopic rod 5, unfolding each door 4 and allowing the four lifting legs 6 to rotate out of their respective storage cavities 3. Then, based on the signal from the level instrument 7, leveling is performed to bring the equipment body 1 to a horizontal position. Specifically, the leveling action involves adjusting the height of the four lifting legs 6 sequentially via the PLC controller according to the signal from the level instrument 7, until the equipment body 1 is horizontal. The leveling action stops when the level instrument 7 detects a horizontal signal. Then, based on the readings of each pressure gauge 11, the height of the corresponding lifting leg 6 is fine-tuned. If any lifting leg 6 is not providing support, the pressure value of the corresponding airbag 8 will be relatively lower. The invention is small, and by adjusting the height of the lifting outrigger 6, the lifting outrigger 6 is able to exert force, thereby supporting the entire container. That is, the pressure values ​​of each pressure gauge 11 are basically the same, so each lifting outrigger 6 is under force and the force is balanced. Even on uneven ground, the above adjustment process is still applicable. In this way, the equipment body 1 can be kept horizontal, and each lifting outrigger 6 is under force and the force is balanced. This can prevent the equipment body 1 from tilting or falling to the greatest extent, and ensure the safe self-loading and unloading of the equipment body 1. The invention is scientifically designed and has a simple structure. It can level the equipment body 1 and prevent the equipment body 1 from tilting or falling to the greatest extent, thus ensuring the safe self-loading and unloading of the equipment body 1.

[0024] The force applied to the lifting outrigger 6 is determined by the reading of the pressure gauge 11. Specifically, when the lifting outrigger 6 is under force, the corresponding foot seat 13 is supported on the ground and subjected to force. The corresponding protrusions 17 are pressed tightly on the ground. Under pressure, the protrusions 17 move upward relative to the foot seat 13. When the bottom of the protrusions 17 is flush with the bottom of the foot seat 13, the pressure block 14 presses upward against the disc spring 9. The disc spring 9 then presses upward against the airbag 8. Under the combined action of the pressure block 14 and the airbag 8, the disc spring 9 is flattened. The airbag 8 deforms under pressure, and the air pressure inside the airbag 8 increases. The pressure gauge 11 measures the change in air pressure inside the airbag 8 in real time and transmits the measured pressure wirelessly to the PLC controller. The PLC controller can then monitor the pressure on the airbag 8 and determine the force applied to the lifting outrigger 6.

[0025] Example 2 Unlike Embodiment 1, both the telescopic rod 5 and the lifting outrigger 6 are electric push rods, and the main body 1 is equipped with a power supply system that provides power to the telescopic rod 5 and the lifting outrigger 6.

[0026] The power supply system uses conventional technology and can employ battery packs or generators.

[0027] Example 3 Unlike embodiments one and two, the storage cavity 3 can be replaced with a hollow column, which is embedded in the outer edge of the door 4, and the lifting support leg 6 is stored and installed in the hollow column.

[0028] The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A self-leveling, anti-tipping, and self-loading / unloading device, characterized in that: The equipment includes a main body and a PLC controller. The main body is equipped with outward-opening doors around its perimeter. Lifting legs are installed on the outer edges of the doors to support the lifting and lowering of the main body. When the doors are open, the lifting legs rise to raise the main body, and when the doors are closed, the main body is lowered. The lower ends of the lifting legs are universally hinged to feet, and the feet are equipped with force monitoring components to detect the ground pressure. The PLC controller is mounted on the main body and is connected to each lifting leg and each force monitoring component. When the doors are closed, they fit or are fitted into the main body, with the outer side of the doors flush with the side of the main body. The lifting legs are stored inside the main body. The force monitoring component includes an airbag, a disc spring, and a pressure block. The foot assembly consists of a foot cover and a foot base. A vertically oriented central hole is formed in the center of the foot base. A circumferential groove is formed on the lower side of the inner circumference of the central hole, and a retaining spring is held within the groove. The outer circumference of the retaining spring is in close contact with the inner circumference of the groove bottom. The inner diameter of the retaining spring is smaller than the inner diameter of the central hole. The airbag, disc spring, and pressure block are arranged concentrically from top to bottom within the central hole, positioned between the foot cover and the retaining spring. The inner diameter of the foot cover... The top surface presses tightly against the outer edge of the top of the airbag, the bottom of the airbag presses tightly against the top of the disc spring, the bottom of the disc spring presses tightly against the top of the pressure block, the outer edge of the bottom of the pressure block presses tightly against the inner edge of the top of the retaining spring, a protrusion is integrally formed in the center of the bottom of the pressure block, the protrusion passes downward through the retaining spring and extends out of the lower end of the center hole, the bottom of the protrusion protrudes out of the bottom of the foot base, a pressure gauge is provided on the airbag, and a receiving groove matching the pressure gauge is provided on the foot cover, and the PLC controller and the pressure gauge are connected by wireless signal transmission.

2. The self-leveling, anti-tipping, and self-loading / unloading equipment according to claim 1, characterized in that: The equipment body has storage cavities with open lower and outer sides at all four corners. Four vertical doors are respectively hinged to the outer openings of the four storage cavities. The inner bottom of the storage cavities is equipped with telescopic rods that drive the opening and closing of the vertical doors. The PLC controller is connected to the telescopic rods. When the vertical doors are closed, the lifting legs are stored in the corresponding storage cavities.

3. The self-leveling, anti-tipping, and self-loading / unloading equipment according to claim 2, characterized in that: Both the telescopic mast and the lifting outriggers are hydraulic cylinders, and the equipment itself is equipped with a hydraulic pump station system that provides hydraulic power to the telescopic mast and the lifting outriggers.

4. The self-leveling, anti-tipping, and self-loading / unloading equipment according to claim 2, characterized in that: Both the telescopic mast and the lifting outriggers are electrically operated, and the equipment itself is equipped with a power supply system that provides power to the telescopic mast and the lifting outriggers.

5. The self-leveling, anti-tipping, and self-loading / unloading device according to claim 1, characterized in that: The equipment body is equipped with a level, and the level line of the level is parallel to the base plate or floor of the equipment body. The PLC controller is connected to the level signal.

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