Lifting load device

Abstract

This invention provides a lifting and supporting device, belonging to the field of distribution box maintenance technology, for supporting maintenance personnel of shore power distribution boxes. The shore power distribution box is equipped with a limit track. It includes: a lifting mechanism for supporting maintenance personnel and adjusting the lifting height; a walking mechanism located at the bottom of the lifting mechanism for generating walking driving force; a control mechanism located on the lifting mechanism and electrically connected to both the lifting and walking mechanisms, used to control the walking speed and start / stop of the walking mechanism via a walking control signal, and to control the lifting and lowering of the lifting mechanism via a lifting control signal; and a stabilizing mechanism located on one side of the lifting mechanism, detachably connected to the corresponding limit track, capable of moving along the corresponding limit track to maintain the lifting and supporting device in a stable state. This invention has the advantages of simple structure, easy relocation, convenient maintenance of the inside of the distribution box, prevention of tipping over of the lifting and supporting mechanism, and good protection for maintenance personnel.

Description

Technical Field

[0001] This invention relates to the field of electrical distribution box maintenance technology, and more specifically to a lifting and supporting device. Background Technology

[0002] Shore power distribution boxes are a type of high-voltage switchgear, distribution transformer, and low-voltage distribution device. They organically combine the functions of transformer voltage reduction and low-voltage power distribution according to a certain wiring scheme and are installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, theft-proof, heat-insulated, fully enclosed, and movable steel structure box, which is particularly suitable for port shore power systems.

[0003] Shore power distribution boxes are a new type of complete set of power distribution equipment. In order to reduce the footprint, the internal space of the substation is compact. Under normal circumstances, the maintenance of the power distribution equipment inside the substation can only be carried out outside the substation. However, the substation has a certain height, and maintenance personnel must use lifting devices, ladders and other devices to reach the maintenance height. However, the use of lifting devices, ladders and other devices during maintenance has problems such as tipping over and inconvenience in movement during use, which reduces maintenance efficiency and is prone to safety accidents. Especially for shore power distribution boxes, since they are close to the coast, tipping over can have serious consequences. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting and supporting device to solve the problems mentioned above, such as tipping over and inconvenience in movement when using lifting devices, ladders, etc. during maintenance, which reduce maintenance efficiency and are prone to safety accidents. This is especially true for shore power distribution boxes, which are close to the coast and tipping over can have serious consequences.

[0005] To achieve the above objectives, embodiments of the present invention provide a lifting and supporting device for supporting maintenance personnel of a shore power distribution box. The shore power distribution box is equipped with a limit rail. The lifting and supporting device includes:

[0006] The lifting mechanism is used to carry maintenance personnel and can adjust the lifting height.

[0007] A walking mechanism, located at the bottom of the lifting mechanism, is used to generate walking driving force;

[0008] A control mechanism is installed on the lifting mechanism and electrically connected to the lifting mechanism and the traveling mechanism. It is used to control the traveling speed and start / stop of the traveling mechanism through a traveling control signal, and to control the lifting and lowering of the lifting mechanism through a lifting control signal.

[0009] A stabilizing mechanism is located on one side of the lifting mechanism and is detachably connected to the corresponding limiting rail. It can move along the corresponding limiting rail to keep the lifting load device in a stable state.

[0010] Optionally, the lifting mechanism includes:

[0011] Supporting framework;

[0012] A scissor lift mechanism is mounted on the support frame, and a load-bearing platform is mounted on the top of the scissor lift mechanism;

[0013] A lifting drive mechanism is mounted on the support frame. The drive rod of the lifting drive mechanism is connected to the scissor lift mechanism, and the lifting of the scissor lift mechanism is achieved by the extension and retraction of the drive rod.

[0014] Optionally, the limiting track includes two symmetrically arranged L-shaped tracks, with a sliding space formed between the two L-shaped tracks; the stabilizing mechanism includes:

[0015] Two connecting rods are spaced apart on one side of the support frame. One end of each connecting rod passes through the support frame and is detachably connected to it. The other end of each connecting rod is provided with a limiting roller. The limiting roller is located in the sliding space and can roll along the corresponding limiting track.

[0016] Optionally, the support frame is provided with two through holes, and a set of limiting sleeves with internal accommodating space are arranged in parallel inside the support frame, with the through holes and the corresponding limiting sleeve openings being opposite to each other.

[0017] One end of the connecting rod passes through the corresponding through hole and is located within the internal accommodating space of the corresponding limiting sleeve.

[0018] Optionally, the support frame is further provided with two first connecting holes; the connecting rod is provided with a plurality of second connecting holes at intervals; positioning pins are provided in the first connecting holes and the corresponding second connecting holes to connect the connecting rod and the support frame.

[0019] Optionally, the walking mechanism is mounted on the support frame and includes:

[0020] Two directional drive wheels and two omnidirectional wheels are symmetrically and spaced apart on the support frame;

[0021] Two drive motors are connected to corresponding directional drive wheels to generate driving force to drive the corresponding directional drive wheels to rotate.

[0022] The frequency converter, electrically connected to the controller and the drive motor, is used to adjust the steering and travel speed of the lifting load-bearing device by adjusting the speed of the drive motor.

[0023] Optionally, the lifting and supporting device further includes:

[0024] A proximity switch is disposed on the lower surface of the support platform and electrically connected to the control mechanism. It is used to generate a threshold trigger signal when the position height of the support platform relative to the support frame is less than a preset height threshold.

[0025] Optionally, the control mechanism is disposed on the carrying platform, and the control mechanism is further configured to generate a corresponding walking control signal based on the threshold trigger signal.

[0026] Optionally, the lifting and supporting device further includes:

[0027] The command input button is located on the carrier platform and is electrically connected to the control mechanism. It is used to generate corresponding walking control signals and lifting control signals according to external input.

[0028] Optionally, the lifting and supporting device further includes:

[0029] The remote controller is mounted on the carrier platform and is communicatively connected to the control mechanism. It is used to generate corresponding walking control signals and lifting control signals based on external input.

[0030] This technical solution provides a lifting and supporting device specifically designed for shore power distribution boxes. It can support maintenance personnel during the inspection of the distribution box and adjust their height for convenient access to the box. Furthermore, a walking mechanism allows for the movement of the lifting and supporting device, while a detachable stabilizing mechanism connected to the limiting rails on the distribution box prevents tipping and maintains stability, providing good protection for maintenance personnel. Additionally, this technical solution offers advantages such as simple structure, small footprint, low construction cost, easy relocation, high safety factor, and ease of use.

[0031] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 This is a top view of the lifting and bearing device provided by the present invention when connected to the shore power distribution box;

[0034] Figure 2 This is a front view of the shore power distribution box provided by the present invention;

[0035] Figure 3This is a schematic diagram of the connection structure between the lifting and bearing device and the shore power distribution box provided by the present invention;

[0036] Figure 4 This is a structural schematic diagram of the lifting and bearing device provided by the present invention;

[0037] Figure 5 This is a block diagram of the connection structure of the lifting and bearing device provided by the present invention.

[0038] Explanation of reference numerals in the attached figures

[0039] 1- Shore power distribution box; 2- Lifting mechanism; 3- Traveling mechanism;

[0040] 4-Control mechanism; 5-Stabilizing mechanism; 6-Proximity switch;

[0041] 7 - Command input button; 8 - Remote control; 11 - Limit track;

[0042] 21-Support frame; 22-Scissor lift mechanism; 23-Load-bearing platform;

[0043] 24-Lifting drive mechanism; 31-Directional drive wheel; 32-Universal wheel;

[0044] 33-Drive motor; 34-Inverter; 51-Connecting rod;

[0045] 52-Limit roller; 53-Limit sleeve; 54-Positioning pin;

[0046] 101 - Sliding space; 211 - Through hole; 212 - First connecting hole;

[0047] 511 - Second connecting hole. Detailed Implementation

[0048] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0049] In the embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use.

[0050] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0051] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0052] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0053] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.

[0054] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] Figure 1 This is a top view of the lifting and bearing device provided by the present invention when connected to the shore power distribution box; Figure 2 This is a front view of the shore power distribution box provided by the present invention; Figure 3 This is a schematic diagram of the connection structure between the lifting and bearing device and the shore power distribution box provided by the present invention; Figure 4 This is a structural schematic diagram of the lifting and bearing device provided by the present invention; Figure 5 This is a block diagram of the connection structure of the lifting and bearing device provided by the present invention.

[0056] like Figure 1-5 As shown, this embodiment provides a lifting and supporting device for supporting maintenance personnel of a shore power distribution box 1. The shore power distribution box 1 is equipped with a limit rail 11. The lifting and supporting device includes:

[0057] Lifting mechanism 2 is used to carry maintenance personnel and can adjust the lifting height.

[0058] The walking mechanism 3 is located at the bottom of the lifting mechanism 2 and is used to generate walking driving force;

[0059] The control mechanism 4 is mounted on the lifting mechanism 2 and electrically connected to the lifting mechanism 2 and the walking mechanism 3. It is used to control the walking speed and start / stop of the walking mechanism 3 through the walking control signal and to control the lifting and lowering of the lifting mechanism 2 through the lifting control signal.

[0060] The stabilizing mechanism 5 is located on one side of the lifting mechanism 2 and is detachably connected to the corresponding limiting rail 11. It can move along the corresponding limiting rail 11 to keep the lifting bearing device in a stable state.

[0061] Specifically, in this embodiment, the shore power distribution box 1 adopts a box body capable of shielding against rain and sunlight. A transformer is installed inside the shore power distribution box 1 to convert high-voltage electricity into power for the load. The current input terminal of the transformer is connected to the high-voltage power line outside the shore power distribution box 1. Cabinet doors are respectively installed on two opposite side walls of the shore power distribution box 1. The cabinet doors can be double-leaf doors, opening outwards to facilitate maintenance personnel in inspecting the transformers in the corresponding areas. When the cabinet doors are closed, they provide shelter from wind and rain, preventing rainwater from entering the shore power distribution box 1. A limit rail 11 is installed on the shore power distribution box 1 below the cabinet doors. Since some transformers installed inside the shore power distribution box 1 have a certain height, maintenance personnel need to use ladders, lifting devices, or other external objects to raise them for convenient maintenance.

[0062] The substation includes: a first auxiliary cabinet, a first system incoming cabinet, a first active rectifier cabinet, a first inverter cabinet, a first outgoing cabinet, a low-voltage feeder cabinet group, a neutral point resistor cabinet group, and a monitoring cabinet; a second auxiliary cabinet, a second system incoming cabinet, a second active rectifier cabinet, a second inverter cabinet, a second outgoing cabinet, and an isolation transformer group. The cabinets are connected using methods known to those skilled in the art to convert the input high-voltage electricity into stable power for the load operation, which will not be described in detail here.

[0063] During maintenance, there may be situations where the position of the lifting device needs to be moved as the maintenance location changes. In the existing technology, when changing the maintenance location using a ladder or conventional lifting device, taking the lifting device as an example, it is necessary to first lower the lifting height of the lifting device and retract the support column of the lifting device in order to adjust the position of the lifting device. After adjusting the position to the correct position, the support column is lowered and the device is raised to the maintenance height for maintenance. However, the reciprocating lifting and moving during maintenance significantly reduces maintenance efficiency. Therefore, in this technical solution, a walking mechanism 3 is installed to enable the lifting load-bearing device to adjust its position while in the elevated maintenance state. However, since the center of gravity of the lifting load-bearing device is high at this time, there is a risk of tilting or overturning when moving the lifting load-bearing device. Therefore, a stabilizing mechanism 5 is installed to maintain the stability of the lifting load-bearing device and prevent it from tilting or overturning during the lifting and moving process of maintenance. The control mechanism 4 is installed on the lifting mechanism 2 and is electrically connected to the lifting mechanism 2 and the walking mechanism 3. After receiving the walking control command, it generates a walking control signal to control the walking speed and start / stop of the walking mechanism 3. When it receives the lifting control command, it generates a lifting control signal to control the lifting of the lifting mechanism 2. This ensures that the lifting load-bearing device can move during maintenance. During the position movement process of maintenance, the lifting load-bearing device operates at a low speed to avoid the risk of tilting or overturning, ensuring the safety of maintenance personnel while improving work efficiency. Furthermore, when control mechanism 4 receives both travel control commands and lifting control commands simultaneously, it can only execute one of the commands; that is, it cannot simultaneously perform lifting of lifting mechanism 2 and travel of travel mechanism 3. The lifting support device can operate via an external power supply or be powered by its own battery. Travel mechanism 3 is in contact with the ground and carries and moves the entire lifting support device. Control mechanism 4 includes a PLC controller, etc.

[0064] Furthermore, the lifting mechanism 2 includes:

[0065] Supporting framework 21;

[0066] A scissor lift mechanism 22 is mounted on the support frame 21, and a load-bearing platform 23 is mounted on the top of the scissor lift mechanism 22.

[0067] A lifting drive mechanism 24 is mounted on the support frame 21. The drive rod of the lifting drive mechanism 24 is connected to the scissor lift mechanism 22, and the lifting of the scissor lift mechanism 22 is achieved by the extension and retraction of the drive rod.

[0068] Specifically, a scissor lift mechanism 22 is installed on the support frame 21. One end of the bottom of the scissor lift mechanism 22 is fixed to the support frame 21, and the other end slides on the support frame 21. One end of the top of the scissor lift mechanism 22 is fixed to the support frame 21, and the other end slides on the support frame 21, thus enabling the scissor lift mechanism 22 to rise and fall. Simultaneously, a lifting drive mechanism 24 is installed on the support frame 21. The drive rod of the lifting drive mechanism 24 can extend and retract, thereby driving the scissor lift mechanism 22 to rise and fall, achieving height adjustment of the support platform 23. Furthermore, a guardrail is installed on the support platform 23 to prevent operators from falling from it. The lifting drive mechanism 24 can specifically be an electric cylinder.

[0069] Furthermore, the limiting track 11 includes two symmetrically arranged L-shaped tracks, with a sliding space 101 formed between the two L-shaped tracks; the stabilizing mechanism 5 includes:

[0070] Two connecting rods 51 are spaced apart on one side of the support frame 21. One end of each connecting rod 51 passes through the support frame 21 and is detachably connected to it. The other end is provided with a limiting roller 52. The limiting roller 52 is located in the sliding space 101 and can roll along the corresponding limiting track 11.

[0071] Specifically, the limiting track 11 includes two symmetrically arranged L-shaped tracks, and the two L-shaped tracks form a sliding space 101 to accommodate the end of one end of the stabilizing mechanism 5, while also playing a certain limiting role, so that the lifting bearing device will not tip over during use and maintenance movement through the connection of the stabilizing mechanism 5, thereby improving safety.

[0072] Two connecting rods 51 are spaced apart on one side of the support frame 21, balancing the forces between the stabilizing mechanism 5, the lifting support device, and the shore power distribution box 1, ensuring contact stability. Additionally, a limiting roller 52 is installed at the end of the limiting rail 11. The limiting roller 52 can roll along the corresponding limiting rail 11, ensuring contact between the lifting support device and the limiting rail 11 of the shore power distribution box 1, while reducing friction at the contact points and facilitating the movement of the lifting support device. To ensure structural strength, the limiting roller 52 can be made of bearings or similar materials.

[0073] Before maintenance, the limit rollers 52 are placed into the sliding space 101 in the limit track 11 in sequence, and the lifting bearing device can move back and forth. After the lifting bearing device is moved to the designated position, the maintenance personnel squat on the bearing platform and control the scissor lift mechanism 22 to lift it. After reaching the designated maintenance height, maintenance is carried out.

[0074] Furthermore, the support frame 21 is provided with two through holes 211, and a set of limiting sleeves 53 with internal accommodating space are arranged in parallel inside the support frame 21, with the through holes 211 and the corresponding limiting sleeves 53 having opposite positions.

[0075] One end of the connecting rod 51 passes through the corresponding through hole 211 and is located in the internal accommodating space of the corresponding limiting sleeve 53.

[0076] Specifically, a set of limiting sleeves 53 with internal accommodating space are arranged in parallel inside the support frame 21, and two through holes 211 are provided at corresponding positions in the support frame 21. The through holes 211 are opposite to the internal accommodating space of the corresponding limiting sleeves 53. The connecting rod 51 can pass through the corresponding through holes 211 and be accommodated in the internal accommodating space of the limiting sleeves 53, thereby restricting the movement position of the connecting rod 51 and preventing the end of the connecting rod 51 from deviating at an angle. At the same time, the limiting sleeves 53 and the support frame 21 are fixed to each other, which can enhance the structural strength of the support frame 21.

[0077] Furthermore, the support frame 21 is provided with two first connecting holes 212; the connecting rod 51 is provided with a plurality of second connecting holes 511 spaced apart; the first connecting holes 212 and the corresponding second connecting holes 511 are provided with positioning pins 54 to connect the connecting rod 51 and the support frame 21.

[0078] Specifically, the support frame 21 is constructed by fixing U-shaped rods together. Due to the different maintenance habits of maintenance personnel and the different maintenance locations, it is necessary to adjust the distance between the lifting support device and the shore power distribution box 1 according to the actual usage. In addition, to avoid the cabinet door from scraping against the lifting support device after it is opened, two first connecting holes 212 are provided on the support frame 21, and multiple second connecting holes 511 are provided at intervals on the connecting rod 51. According to the actual use, the extension distance of the connecting rod 51 is adjusted so that the first connecting hole 212 and the corresponding second connecting hole 511 coincide in the vertical position. Then, the positioning pin 54 is inserted into the first connecting hole 212 and the second connecting hole 511 to realize the detachable connection between the connecting rod 51 and the support frame 21. The connection is stable and the installation and disassembly are convenient.

[0079] In another embodiment, the support frame 21 has four through holes 211 and four first connecting holes 212, which are symmetrically distributed on two opposite U-shaped rods of the support frame 21. This serves as a redundant design for backup and allows for the replacement of the installation position of the connecting rod 51 according to the usage environment during use.

[0080] Furthermore, the walking mechanism 3 is mounted on the support frame 21 and includes:

[0081] Two directional drive wheels 31 and two omnidirectional wheels 32 are symmetrically and spaced apart on the support frame 21;

[0082] Two drive motors 33 are respectively connected to the corresponding directional drive wheels 31 to generate driving force to drive the corresponding directional drive wheels 31 to rotate.

[0083] The frequency converter 34 is electrically connected to the control mechanism 4 and the drive motor 33, and is used to adjust the steering and travel speed of the lifting load device by adjusting the speed of the drive motor 33.

[0084] Specifically, to improve mechanical efficiency, reducers are provided for the two drive motors 33. To avoid affecting the lifting mechanism 2, the two drive motors 33 are symmetrically positioned on either side of the support frame 21, or symmetrically positioned on the lower end face of the support frame 21. Furthermore, to improve mechanical efficiency, the shafts of the drive motors 33 are connected to the corresponding directional drive wheels 31 via reducers. The frequency converter 34 can be positioned on the lower end face of the support frame 21, located in the middle of the two drive motors 33. The directional drive wheels 31 can only move forward and backward along the support frame 21 and cannot deflect at an angle, while the omnidirectional wheels 32 can rotate in all directions. When the lifting load-bearing device needs to turn, the frequency converter 34 adjusts the speed of the two motors to achieve differential steering. For example, if the lifting load-bearing device needs to turn left, the frequency converter 34 lowers the speed of the drive motors 33, ensuring that the speed of the drive motor 33 on the left is lower than the speed of the drive motor 33 on the right, thus completing the steering. The inverter 34 is controlled by the control mechanism 4 to adjust the speed and direction of the drive motor 33. This is a technique well known to those skilled in the art, and the specific wiring method and circuit implementation principle will not be described here.

[0085] Furthermore, in order to enable the drive motor 33 to rotate due to external force after a power outage, thereby causing the lifting load device to move, an electromagnetic brake motor can be used in this embodiment to lock the motor after a power outage, preventing the lifting load device from moving and further improving safety performance.

[0086] Furthermore, the lifting and supporting device also includes:

[0087] The proximity switch 6 is disposed on the lower surface of the support platform 23 and electrically connected to the control mechanism 4. It is used to generate a threshold trigger signal when the position height of the support platform 23 relative to the support frame 21 is less than a preset height threshold.

[0088] Specifically, a proximity switch 6 is provided on the lower end face of the bearing platform 23, and the proximity switch 6 is positioned opposite to the support frame 21, specifically directly above the support frame 21. This allows the bearing platform 23 to decrease in height as the scissor lift mechanism 22 retracts, and the proximity switch 6 to move closer to the support frame 21. When the height of the proximity switch 6 and the support frame 21 is less than a preset height threshold, the proximity switch 6 generates a signal, which is sent to the control mechanism 4 as a threshold trigger signal to provide feedback on the height of the bearing platform 23. The control mechanism 4 then controls the moving speed of the lifting bearing device based on this threshold trigger signal.

[0089] Furthermore, the control mechanism 4 is disposed on the bearing platform, and the control mechanism 4 is also used to generate a corresponding walking control signal according to the threshold trigger signal.

[0090] Specifically, in this embodiment, during the maintenance process, the position may need to be moved. In the prior art, when changing the maintenance position using ladders or conventional lifting devices, taking the lifting device as an example, it is necessary to first lower the height of the lifting device and retract the support column of the lifting device to adjust the position of the lifting device. After adjusting the position, the support column is lowered and the device is raised to the maintenance height for maintenance. However, the repeated lifting and moving during the maintenance process will greatly reduce the maintenance efficiency. Therefore, in this technical solution, a walking mechanism 3 is set up so that the lifting bearing device can be adjusted in position during the raising maintenance process. However, since the center of gravity of the lifting bearing device is high at this time, there is a huge risk of tilting and overturning when moving the lifting bearing device. Therefore, a stabilizing mechanism 5 is set up to prevent the lifting bearing device from tilting or overturning. At the same time, the height of the bearing platform 23 is obtained through a proximity switch 6 to limit the movement speed. This ensures that the lifting bearing device can be moved during the maintenance process, while also ensuring that the lifting bearing device operates at a low speed to avoid the risk of tilting or overturning. This ensures the safety of maintenance personnel and greatly improves work efficiency.

[0091] In this embodiment, when the lifting bearing device needs to be moved, the control mechanism 4, upon receiving the walking control command for the lifting bearing device, simultaneously determines whether a threshold trigger signal has been received. If a threshold trigger signal is received, it indicates that the bearing platform 23 is at a low position. At this time, a corresponding walking control signal is generated to control the frequency converter to adjust the speed of the drive motor 33, so that the lifting bearing device walks at a first preset speed. If no threshold trigger signal is received, it indicates that the bearing platform 23 is at a high position. In this case, the frequency converter is controlled to adjust the speed of the drive motor 33, so that the lifting bearing device walks at a second preset speed. The first preset speed is greater than the second preset speed, and the speed value of the second preset speed is smaller, thereby ensuring safety during the walking process.

[0092] More specifically, when a movement command is received, determining whether a threshold trigger signal has been received can be done by: taking the moment when the walking control signal was received as a reference, determining whether a threshold trigger signal has been received within the past N moments.

[0093] Furthermore, the lifting and supporting device also includes:

[0094] The instruction input button 7 is located on the support platform 23 and is electrically connected to the control mechanism 4. It is used to generate corresponding walking control commands and lifting control commands according to external input.

[0095] In this embodiment, the command input button 7 is electrically connected to the control mechanism 4 via a data cable. When the maintenance personnel press the corresponding button, the command input button 7 generates corresponding walking control commands and lifting control commands, which are transmitted to the control mechanism 4. The control mechanism 4 generates corresponding walking control signals based on the walking control commands and corresponding lifting control signals based on the lifting control commands. Furthermore, in this embodiment, preferably, the command input button 7 is positioned in the center of the support platform 23 and close to the upper end of the support platform 23. This allows the maintenance personnel to be in a semi-squatting or sitting position on the support platform 23 while continuously pressing the button and the lifting support device responds, further lowering the center of gravity of the maintenance personnel and improving safety performance.

[0096] Furthermore, the lifting and supporting device also includes:

[0097] The remote controller 8 is communicatively connected to the control mechanism 4 and is used to generate corresponding walking control signals and lifting control signals based on external input.

[0098] After maintenance, when the lifting and supporting device needs to be moved over a long distance, it can be controlled via remote control 8. Pressing the buttons on remote control 8 generates travel control commands and lifting control commands, which are transmitted to control mechanism 4. Control mechanism 4 generates corresponding travel control signals based on the travel control commands and corresponding lifting control signals based on the lifting control commands, thereby realizing the movement and steering of the lifting and supporting device. During long-distance movement, the lifting mechanism 2 needs to be retracted to its initial position by default. Proximity switch 6 can generate a signal, and control mechanism 4 can receive a threshold trigger signal. At this time, the lifting and supporting device moves at a second preset speed. Specifically, remote control 8 and control mechanism 4 communicate via infrared communication, Bluetooth communication, etc., and establish short-range communication between them. For example, communication with air conditioners, televisions, etc., can be achieved through remote control, which is known to those skilled in the art and will not be described further here.

[0099] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0100] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0101] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0102] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A lifting and supporting device for supporting maintenance personnel of a shore power distribution box (1), wherein the shore power distribution box (1) is provided with a limiting rail (11), characterized in that, The lifting and bearing device includes: Lifting mechanism (2), used to carry maintenance personnel, and capable of adjusting the lifting height, the lifting mechanism (2) includes: Supporting framework (21); A scissor lift mechanism (22) is provided on the support frame (21), and a bearing platform (23) is provided on the top of the scissor lift mechanism (22). A lifting drive mechanism (24) is provided on the support frame (21). The drive rod of the lifting drive mechanism (24) is connected to the scissor lift mechanism (22). The lifting of the scissor lift mechanism (22) is achieved by the extension and retraction of the drive rod. The walking mechanism (3) is located at the bottom of the lifting mechanism (2) and is used to generate walking driving force; The control mechanism (4) is installed on the lifting mechanism (2) and electrically connected to the lifting mechanism (2) and the walking mechanism (3). It is used to control the walking speed and start / stop of the walking mechanism (3) through the walking control signal and to control the lifting mechanism (2) through the lifting control signal. A stabilizing mechanism (5) is disposed on one side of the lifting mechanism (2) and detachably connected to the corresponding limiting rail (11). It can move along the corresponding limiting rail (11) to keep the lifting bearing device in a stable state. The limiting rail (11) includes two symmetrically arranged L-shaped rails, and a sliding space (101) is formed between the two L-shaped rails. The stabilizing mechanism (5) includes: Two connecting rods (51) are spaced apart on one side of the support frame (21). One end of the connecting rod (51) passes through the support frame (21) and is detachably connected to the support frame (21). The other end is provided with a limiting roller (52). The limiting roller (52) is located in the sliding space (101) and can roll along the corresponding limiting track (11). The support frame (21) is provided with two through holes (211), and a set of limiting sleeves (53) with internal accommodating space are arranged in parallel inside the support frame (21). The positions of the through holes (211) and the corresponding limiting sleeves (53) are opposite. One end of the connecting rod (51) passes through the corresponding through hole (211) and is located in the internal accommodating space of the corresponding limiting sleeve (53); The support frame (21) is also provided with two first connecting holes (212); the connecting rod (51) is provided with a plurality of second connecting holes (511) spaced apart; the first connecting holes (212) and the corresponding second connecting holes (511) are provided with positioning pins (54) to connect the connecting rod (51) and the support frame (21).

2. The lifting and bearing device according to claim 1, characterized in that, The walking mechanism (3) is mounted on the support frame (21) and includes: Two directional drive wheels (31) and two omnidirectional wheels (32) are symmetrically and spaced apart on the support frame (21); Two drive motors (33) are connected to the corresponding directional drive wheels (31) respectively, and are used to generate driving force to drive the corresponding directional drive wheels (31) to rotate; The frequency converter (34) is electrically connected to the control mechanism (4) and the drive motor (33) and is used to adjust the steering and travel speed of the lifting load device by adjusting the speed of the drive motor (33).

3. The lifting and bearing device according to claim 1, characterized in that, The lifting and bearing device also includes: A proximity switch (6) is disposed on the lower surface of the bearing platform (23) and electrically connected to the control mechanism (4) for generating a threshold trigger signal when the position height of the bearing platform (23) relative to the support frame (21) is less than a preset height threshold.

4. The lifting and bearing device according to claim 3, characterized in that, The control mechanism (4) is disposed on the bearing platform, and the control mechanism (4) is also used to generate a corresponding walking control signal according to the threshold trigger signal.

5. The lifting and bearing device according to claim 1, characterized in that, The lifting and bearing device also includes: The instruction input button (7) is set on the carrier platform (23) and electrically connected to the control mechanism (4) to generate corresponding walking control instructions and lifting control instructions according to external input.

6. The lifting and bearing device according to claim 1, characterized in that, The lifting and bearing device also includes: The remote controller (8) is connected in communication with the control mechanism (4) and is used to generate corresponding walking control commands and lifting control commands based on external input.

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