Forklift counterbalance loading assisting device and control method

Abstract

The application discloses a forklift counterbalance upper piece auxiliary device and a control method, which comprises a load-bearing rotating platform, a rotary gear fixed to the lower surface of the load-bearing rotating platform, and a support platform arranged below the rotary gear; a plurality of rollers are arranged on the lower surface of the load-bearing rotating platform in the circumferential direction; a weighing rotating platform is arranged above the load-bearing rotating platform; and a plurality of weighing units are arranged between the load-bearing rotating platform and the weighing rotating platform. The actual weight of the counterbalance is obtained by the weighing unit, compared with the theoretical weight of the counterbalance model in the database, and a signal is sent to the system. If the actual weight exceeds the threshold value, the system alarms; if the actual weight is less than the threshold value, the system sends a signal to a servo motor, and the servo motor drives the driving gear to rotate. The problem that the counterbalance tool needs to be adjusted in angle is solved, the automatic rotation of the working platform is realized, the simple discrimination of the counterbalance model is increased, and the mistake-proofing of the counterbalance upper piece is realized.

Description

Technical Field

[0001] This invention relates to the field of forklift production equipment, and more specifically to an auxiliary device and control method for a forklift counterweight. Background Technology

[0002] With the development of logistics, the demand for forklifts is constantly increasing. Currently, counterbalanced materials on forklift assembly lines are transported via aerial logistics, requiring centralized loading outside the factory before being supplied to the final assembly line via an aerial loop line for timely and precise material delivery. Therefore, there is an urgent need to improve the efficiency of counterbalance loading. Currently, a forklift is used to scoop the counterbalance and pallet to the loading point, and after adjusting the counterbalance and pallet to the appropriate angle and position, workers use a chain hoist to lift the counterbalance onto the aerial loop line. However, due to design limitations of the counterbalance and tooling, the chain hoisting of the counterbalance requires angle adjustment (the tooling needs to be rotated 90°), making direct loading in one step impossible. Using a forklift to adjust the position and angle of the counterbalance and tooling is inefficient and can even affect the assembly line's cycle time. The method of adjusting the position and angle of the counterbalance and tooling using a forklift is complex, inconvenient, and poses certain safety hazards. Furthermore, the lack of confirmation of the counterbalance loading model increases the risk of loading the wrong part.

[0003] Chinese Patent Publication No. CN216375786U, published on April 26, 2022, discloses a utility model entitled "A Forklift Counterweight Transfer Frame." This application discloses a forklift counterweight transfer frame, comprising: a horizontal support; and a vertical hanging frame. The vertical hanging frame is vertically fixed to the top of the horizontal support. The vertical hanging frame includes two symmetrical vertical channel steels suspended on the side walls of the horizontal support, a rectangular tube fixed between the top side walls of the two vertical channel steels, and hook plates suspended on the top side walls of the vertical channel steels for hanging forklift counterweights. The horizontal support includes two parallel transverse channel steels and a longitudinal channel steel fixed to the top of the two transverse channel steels. Two vertical channel steels are symmetrically arranged on the side wall of the transverse channel steels. The vertical bracket also includes a rectangular tube II fixed to the bottom side wall of the two vertical channel steels. The bottom of the rectangular tube II is set at the top of the transverse channel steels. Although this application can achieve rapid stacking and transfer by utilizing the counterweight's own structure and gravity, it lacks a counterweight loading rotation angle adjustment mechanism, making it impossible to load the item in one go, resulting in low efficiency. Furthermore, the lack of confirmation of the counterweight loading item model poses a risk of loading the wrong item. Summary of the Invention

[0004] This invention provides an auxiliary device and control method for loading counterbalance on a forklift. By setting up a load-bearing rotating component and a weighing unit, it solves the problem of adjusting the angle of the counterbalance fixture, realizes the automatic rotation of the work platform, increases the ease of identification of the counterbalance model, prevents errors in loading counterbalance, and improves loading efficiency and ease of operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a forklift counterbalance loading auxiliary device, comprising a load-bearing rotating platform, a rotary gear fixed on the lower surface of the load-bearing rotating platform, and a support platform disposed below the rotary gear; a plurality of rollers are disposed along the circumferential direction on the lower surface of the load-bearing rotating platform; a weighing rotating platform is disposed above the load-bearing rotating platform, and a plurality of weighing units are disposed between the load-bearing rotating platform and the weighing rotating platform. This achieves automatic rotation of the work platform, improving loading efficiency and ease of operation.

[0006] Preferably, both the load-bearing rotating platform and the weighing rotating platform are discs, and the disc includes an outer ring and several cross-shaped profiles arranged inside the outer ring.

[0007] Preferably, the weighing unit includes a weighing sensor and a platform fixing bracket, with several weighing units symmetrically arranged around the center of the weighing rotation platform. The disc design ensures a uniform distribution of the center of gravity during rotation, reducing instability caused by center of gravity shift and improving operational safety and reliability. The symmetrical layout guarantees weighing accuracy and balance, reducing weighing errors caused by asymmetrical layout and improving weighing precision.

[0008] Preferably, the inner wall of the outer ring of the load-bearing rotating platform is provided with several T-shaped mounting brackets. One end of each T-shaped mounting bracket is fixed to the inner wall of the outer ring, and the other two ends are fixed to the side wall of the cross-shaped profile near the outer ring. The T-shaped mounting brackets provide stable structural support and enhance the stability and durability of the load-bearing rotating platform.

[0009] Preferably, the top end of the load cell is fixed to the lower surface of the weighing rotating platform, and the bottom end is fixed to the upper surface of the platform fixing bracket, which is then fixed to a T-shaped mounting bracket. This ensures the load cell remains stable during rotation, reduces measurement errors caused by vibration or impact, and improves weighing accuracy.

[0010] Preferably, the slewing bearing is fixed to the upper surface of the support platform, and the slewing gear is positioned above the support platform. When the motor receives a signal, it rotates the servo motor to drive the drive gear to rotate, and the gear meshes to drive the load-bearing rotating platform, thus realizing the rotation of the platform.

[0011] Preferably, a servo motor is installed below the support platform, and the servo motor is connected to a drive gear on the upper surface of the support platform. Precise control of the servo motor can ensure the accurate positioning and rotation of the load-bearing rotating platform, improving operational flexibility and efficiency.

[0012] Preferably, the drive gear and the rotary gear mesh, with the tip circle radius of the drive gear being smaller than that of the rotary gear. This design ensures good meshing between the gears, reduces gear backlash, and improves rotational accuracy and stability.

[0013] Preferably, the proximity switch is mounted on the side wall of the T-shaped mounting bracket near the outer ring, and is used to control the servo motor. The proximity switch allows for precise control; upon reaching the desired rotational position, a trigger signal is sent to the servo motor, causing it to stop and ensuring the rotation angle meets the set requirements, with the theoretical and actual angles consistent.

[0014] Preferably, a plurality of rollers are provided along the circumferential direction below the outer ring of the load-bearing rotating platform. The top of the rollers contacts the lower surface of the load-bearing rotating platform, and the bottom is mounted on the roller support assembly. The roller design can reduce the friction between the load-bearing rotating platform and the ground, reduce energy consumption, and improve the flexibility and efficiency of rotation.

[0015] A control method employs the aforementioned forklift counterweight loading auxiliary device. The weighing unit obtains the actual weight of the counterweight, compares it with the theoretical weight of that counterweight model in the database, and sends a signal to the system. If the weight exceeds a threshold, the system alarms; if the weight is less than the threshold, the system sends a signal to the servo motor, which drives the drive gear to rotate. The system receives signals from the weighing unit and then controls the device. This solves the problem of needing to adjust the angle of the counterweight fixture, enables automatic rotation of the work platform, simplifies the identification of the counterweight model, and prevents errors during counterweight loading by comparing weights through the weighing unit, thereby improving loading efficiency and ease of operation.

[0016] Preferably, if the servo motor malfunctions, the fault event is reported to the system and stored in the database for repair. If the servo motor is operating normally, it drives the drive gear, which in turn drives the load-bearing rotating platform. If the load-bearing rotating platform malfunctions, the fault event is reported to the system and stored in the database for repair. This ensures operational safety. If the load-bearing rotating platform malfunctions, the system reports and stores the fault event, allowing for timely repair and avoiding potential safety risks. This minimizes production interruptions caused by equipment failures. The automated fault detection and reporting system reduces reliance on specialized technicians and lowers maintenance costs.

[0017] The beneficial effects of this invention are as follows: By setting up a load-bearing rotating component and a weighing unit, this invention solves the problem of adjusting the angle of the counterweight fixture, realizes the automatic rotation of the work platform, increases the ease of identification of the counterweight model, realizes error prevention when loading the counterweight, eliminates the need for worker adjustment, facilitates direct loading by employees, and improves loading efficiency and ease of operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the weighing rotary platform and weighing unit structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the load-bearing rotating component of the present invention.

[0021] Figure 4 This is a cross-sectional view of the present invention.

[0022] Figure 5 This is a flowchart of the control method of the present invention.

[0023] Reference numerals in the attached figures: 1: Weighing rotary platform; 2: Weighing unit; 2.1: Weighing sensor; 2.2: Platform fixing bracket; 3: Load-bearing rotary assembly; 3.1: T-shaped mounting bracket; 3.2: Load-bearing rotary platform; 3.3: Slewing bearing; 3.4: Slewing gear; 4: Proximity switch; 5: Servo motor; 6: Drive gear; 7: Support platform; 8: Support base; 9: Roller; 10: Roller support assembly; 11: Outer ring; 12: Profile. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1As shown, this invention is a forklift balancing and loading auxiliary device. The device is designed to improve the efficiency and accuracy of forklift counterweight loading while ensuring ease of operation and safety. The device includes key components such as a weighing rotary platform 1, a load-bearing rotating assembly 3, a weighing unit 2, a servo motor 5, and a proximity switch 4. The weighing rotary platform 1 is one of the core components of this invention. It is designed in a disc shape, including an outer ring 11 and several cross-shaped profiles 12 installed within the outer ring 11. A circular plate with the same inner diameter as the outer ring 11 is installed on the disc of the weighing rotary platform 1. This circular plate is the working area for placing the counterweight and counterweight fixture. The main function of the weighing rotary platform 1 is to drive the counterweight and counterweight fixture to rotate and accurately weigh them to ensure the accuracy of loading. The load-bearing rotating assembly 3 is installed below the weighing rotating platform 1. Its structure also adopts a disc design. The load-bearing rotating assembly 3 includes a load-bearing rotating platform 3.2 and a slewing bearing 3.3. The centers of the load-bearing rotating platform 3.2 and the slewing bearing 3.3 are on the same vertical line as the center of the weighing rotating platform 1, ensuring concentricity and stability of the rotation. Furthermore, the diameter of the disc of the load-bearing rotating platform 3.2 is the same as the diameter of the disc of the weighing rotating platform 1. This design allows the two discs to maintain synchronization during rotation, reducing errors caused by diameter differences. Several weighing units 2 are provided between the load-bearing rotating assembly 3 and the weighing rotating platform 1. In this embodiment, four weighing units 2 are preferably symmetrically distributed around the center and set on the profile 12 near the outer ring 11. This symmetrical layout ensures the accuracy and balance of weighing, reducing weighing errors caused by asymmetrical layout. Servo motor 5 is the power source driving the rotation of the load-bearing rotating assembly 3. It is connected to drive gear 6, which meshes with the rotary gear 3.4 of the load-bearing rotating assembly 3 to drive the load-bearing rotating assembly 3 to rotate, thereby driving the weighing rotating platform 1 to rotate. The weighing rotating platform 1 then drives the counterweight and balancing fixture to rotate. Precise control of servo motor 5 ensures accurate positioning and rotation of the load-bearing rotating assembly 3, improving operational flexibility and efficiency. The control signal for servo motor 5 is provided by the system. Based on the signal from weighing unit 2 and the command from proximity switch 4, servo motor 5 can precisely control the rotation of the load-bearing rotating assembly 3. Rollers 9 are provided below the outer ring 11 of the load-bearing rotating assembly 3, and the rollers 9 are mounted on roller support assembly 10. The entire device is set in a cylindrical groove in the ground. This design ensures that the upper surface of the weighing rotating platform 1 is on the same horizontal plane as the ground. This layout not only facilitates loading operations for operators but also reduces operational inconvenience and safety hazards caused by height differences.

[0026] like Figure 3As shown, the load-bearing rotating assembly 3 of the present invention is a key component of the forklift counterbalance auxiliary device, consisting of two core components: a load-bearing rotating platform 3.2 and a slewing bearing 3.3. The load-bearing rotating platform 3.2 is fixed to the slewing bearing 3.3 by bolts. This fixing method is simple and reliable, facilitating installation and maintenance. The bolt connection provides sufficient tightening force to ensure that the load-bearing rotating platform 3.2 will not loosen or shift during rotation, thus guaranteeing the stability and safety of rotation. The load-bearing rotating platform 3.2 includes an outer ring 11 and cross-shaped profiles 12 disposed within the outer ring 11. These profiles 12 are installed perpendicularly to each other, forming a robust cross-shaped structure. In this embodiment, it is preferable to have two profiles 12 horizontally and two vertically, forming a grid-like cross structure. This structural design not only enhances the strength and rigidity of the load-bearing rotating platform 3.2 but also provides a stable support point for installing the weighing unit 2 and other components. Within the four fan-shaped corners of the grid-shaped cross structure, four T-shaped mounting brackets 3.1 are provided. These T-shaped mounting brackets 3.1 are set on the inner wall of the outer ring 11 of the load-bearing rotating assembly 3. One end of the T-shaped mounting bracket 3.1 is fixed to the inner wall of the outer ring 11, and the other two ends are fixed to the side wall of the cross-shaped profile 12 near the outer ring 11. The design of the T-shaped mounting brackets 3.1 cleverly utilizes space, providing a stable installation position for the platform fixing bracket 2.2 of the weighing unit 2. This layout not only improves the space utilization of the load-bearing rotating assembly 3, but also enhances the stability and durability of the entire device by distributing the load. The T-shaped mounting brackets 3.1 are used to install the platform fixing bracket 2.2 of the weighing unit 2, which are the fixed bases for the load cells 2.1. The load cells 2.1 are key components for achieving accurate weighing, and their stability directly affects the accuracy of weighing. The T-shaped mounting brackets 3.1 provide stable structural support, ensuring that the load cells 2.1 remain stable during rotation, reducing measurement errors caused by vibration or impact, and improving the accuracy of weighing. A proximity switch 4 is provided within the circumference of the load-bearing rotating platform 3.2. The proximity switch 4 is located on the side wall of the T-shaped mounting bracket 3.1 near the outer ring 11. The proximity switch 4 enables precise control. When the load-bearing rotating component 3 rotates to the predetermined position, the proximity switch 4 detects the signal and triggers, and the servo motor 5 immediately stops working. This precise control ensures that the rotation angle reaches the set requirements, guarantees the consistency between the theoretical and actual angles, and thus improves the operational accuracy and reliability of the entire device. Several rollers 9 are provided along the circumferential direction below the outer ring 11 of the load-bearing rotating platform 3.2. In this embodiment, four rollers 9 are selected. The top of the rollers 9 contacts the lower surface of the load-bearing rotating platform 3.2, providing upward support to the load-bearing rotating platform 3.2, thereby driving the rotary gear 3.4 to be suspended in the air, ensuring the stability of the load-bearing rotating platform 3.2 during rotation. Moreover, the rotation of the rollers 9 also helps the load-bearing rotating platform 3.2 achieve a smoother rotation.The rollers 9 and roller support assemblies 10 are symmetrically arranged around the center of the load-bearing rotating platform 3.2. This symmetrical layout helps to evenly distribute the weight of the load-bearing rotating platform 3.2, reducing eccentric moments caused by uneven weight distribution, thereby reducing vibration and noise during rotation. The bottom ends of the rollers 9 are mounted on the roller support assemblies 10, which are made of high-strength materials to ensure durability and reliability under repeated loads and rotational stresses. The design of the roller support assemblies 10 allows the rollers 9 to rotate freely while maintaining correct position and alignment, which is crucial for maintaining the smooth operation of the load-bearing rotating platform 3.2. The design of the rollers 9 reduces friction between the load-bearing rotating assembly 3 and the ground, reducing energy consumption and heat generated by friction, thus extending the service life of the load-bearing rotating assembly 3. This improves the flexibility and efficiency of rotation.

[0027] like Figure 3 and Figure 4As shown, a rotary gear 3.4 is fitted onto the rotary bearing 3.3, making the rotation of the entire device more flexible and precise. A rectangular plate is bolted to the upper surface of the rotary gear 3.4; this rectangular plate serves as a mounting plate, providing a stable mounting platform for the load-bearing rotary platform 3.2. The mounting plate is bolted to the load-bearing rotary platform 3.2, ensuring its stability and facilitating installation and maintenance. The lower surface of the rotary bearing 3.3 is fixedly mounted on a support platform 7, which secures and supports the rotary bearing 3.3, ensuring its stability during operation. The support platform 7 is a rectangular plate; its length is greater than the length of the mounting plate, and its width is equal to the width of the mounting plate. The inner diameter of the rotary gear 3.4 is slightly larger than the outer diameter of the rotary bearing 3.3, allowing the rotary gear 3.4 to rotate freely on the rotary bearing 3.3. The rotary gear 3.4 can rotate around the rotary bearing 3.3. The rotary gear 3.4 is positioned above the support platform 7, with its lower surface a certain distance from the platform. This arrangement provides sufficient space for the meshing of the drive gear 6 and the rotary gear 3.4, ensuring smooth and precise meshing while avoiding direct contact between the rotary gear 3.4 and the support platform 7. This reduces friction and wear caused by contact, a major cause of gear wear and energy loss. By reducing friction, the service life of the rotary gear 3.4 is extended, reducing not only the direct costs of gear replacement but also the indirect costs and downtime associated with maintenance and repair. The rotary gear 3.4 is suspended above the support platform 7 by rollers supporting the load-bearing rotating platform 3.2. The platform 3.2 exerts an upward force on the rotary gear 3.4 through a mounting plate, maintaining it at an appropriate height for perfect meshing with the drive gear 6 while avoiding direct contact with the support platform 7. The height of the top of roller 9 must be precisely controlled to ensure that the rotary gear 3.4 meshes perfectly with the drive gear 6 while avoiding direct contact with the support platform 7. This ensures that the height of roller 9 provides sufficient support without hindering the normal operation of the rotary gear 3.4. The tooth grooves of the rotary gear 3.4 are approximately rectangular for meshing with the drive gear 6. The servo motor 5 is connected to the drive gear 6, and the tip circle radius of the drive gear 6 is smaller than that of the rotary gear 3.4. The servo motor 5 can directly control the rotation of the drive gear 6. When the servo motor 5 receives a signal, it rotates to drive the drive gear 6, which in turn drives the rotary gear 3.4. This direct drive method improves the rotation response speed and control accuracy. The rotary gear 3.4 is fixedly connected to the load-bearing rotating platform 3.2 via a mounting plate. The rotation of the load-bearing rotating platform 3.2 drives the rotation of the weighing rotating platform 1, realizing the platform's rotation. The rotation of the weighing rotating platform 1 is synchronized with the rotation of the load-bearing rotating assembly 3, improving the overall operating efficiency of the device.When the load-bearing rotating component 3 rotates to the predetermined position, the proximity switch 4 detects the signal and triggers, and the servo motor 5 immediately stops working. This precise control ensures that the load-bearing rotating component 3 can accurately stop at the predetermined position, realizing precise control of the counterweight and the rotation setting angle (90 degrees) of the counterweight fixture. The precise control of the servo motor 5 can ensure the accurate positioning and rotation of the load-bearing rotating component 3, improving the flexibility and efficiency of operation.

[0028] Four support bases 8 are located below the support platform 7. Each support base 8 consists of a rectangular plate and a triangular plate at the bottom of the rectangular plate. The triangular plate is perpendicular to the ground and the support base 8, providing support for the support base 8. The four support bases 8 are respectively located below the four corners of the support platform 7, symmetrically arranged around the center of the support platform 7. A servo motor 5 is located below the support platform 7 and connected to a drive gear 6 located on the upper surface of the support platform 7. It is used to drive the drive gear 6 to rotate.

[0029] like Figure 2 As shown, the weighing rotating platform 1 is located above the load-bearing rotating assembly 3. Its structure also adopts a disc design, including an outer ring 11 and several cross-shaped profiles 12 arranged within the outer ring 11. These profiles 12 are installed perpendicularly to each other, forming a robust cross-shaped structure. In this embodiment, it is preferable to have three profiles 12 in each direction. This structural design not only enhances the stability of the platform but also facilitates installation and maintenance. Circular plates of the same diameter are mounted on the disc to support and drive the counterweight and its rotation.

[0030] like Figure 2 As shown, the weighing unit 2 is disposed between the weighing rotating platform 1 and the load-bearing rotating assembly 3. The weighing unit 2 includes a weighing sensor 2.1 and a platform fixing bracket 2.2. Several weighing units 2 are symmetrically arranged around the center of the weighing rotating platform 1. The symmetrical layout can ensure the accuracy and balance of weighing, reduce the weighing error caused by the asymmetry of the layout, and improve the weighing accuracy. In this embodiment, four weighing units 2 are preferably disposed on the profile 12 near the outer ring 11. The top end of the weighing sensor 2.1 is fixed to the lower surface of the weighing rotating platform 1, and the bottom end is fixed to the upper surface of the platform fixing bracket 2.2. The platform fixing bracket is a rectangular block, and the platform fixing bracket 2.2 is laid flat and fixed to the upper surface of the T-shaped mounting bracket 3.1 near the outer ring 11. This fixing method can ensure that the weighing sensor 2.1 remains stable during rotation, reduce the measurement error caused by vibration or impact, and improve the weighing accuracy. The added weighing sensor 2.1 compares the theoretical weight provided by the MES with the actual weight of the counterweight. If the weight exceeds the set upper and lower limits, the system alarms, indicating that the wrong counterweight has been added. By comparing the weight through weighing unit 2, the system can automatically identify the model of the counterweight, thus preventing errors in counterweight loading. This function reduces errors from manual identification and improves the accuracy of loading.

[0031] like Figure 5 As shown, the system is the brain of the forklift counterbalance loading auxiliary device of this invention. It consists of a MES (Manufacturing Execution System) system and a PLC (Programmable Logic Controller) system. The close integration of these two systems ensures the efficient and accurate operation of the entire device. The MES system is responsible for collecting and processing all production-related data, including the theoretical weight and model information of the counterbalance. This data is crucial for ensuring the accuracy of the loading process. The PLC system controls the precise movement of the servo motor based on the data provided by the MES system. This data-driven control method improves operational flexibility and response speed. The MES system provides data to cooperate with the PLC to control the rotation of the servo motor 5, where the servo motor 5 drives the load-bearing rotating component 3 to rotate through gear meshing, realizing the automatic rotation of the entire working rotating platform. The operator uses a forklift to shovel the counterbalance and tooling onto the weighing rotating platform 1. This action triggers the weighing sensor 2.1. The weighing sensor 2.1 measures the actual weight of the counterbalance in real time and transmits the data to the MES system. The MES system then compares the transmitted weight data with the preset theoretical weight to determine whether the counterbalance model is correct. When the set upper and lower limits are exceeded, i.e., the threshold is exceeded, the system alarms, indicating that the wrong counterweight has been installed. Once the MES system confirms that the counterweight model is correct, the signal is immediately transmitted to servo motor 5. If servo motor 5 malfunctions, the fault event is reported to the system and stored in the database, and then the system is stopped for maintenance. If servo motor 5 is operating normally, it rotates according to the received signal, driving the load-bearing rotating platform 3.2 to rotate to the set angle. If the load-bearing rotating platform 3.2 malfunctions, the fault event is reported to the system and stored in the database. After the counterweight and counterweight fixture have rotated to the set angle, the operator uses a chain hoist to lift the counterweight to the overhead loop line. Upon completion, a signal is triggered, and servo motor 5 restarts rotating back to the initial position. The forklift then removes the fixture from the rotating platform, completing a single process.

[0032] Work process.

[0033] 1. Loading with a forklift.

[0034] The operator uses a forklift to shovel the counterweight and tooling onto the weighing rotating platform 1, which triggers the weighing sensor 2.1.

[0035] 2. Model identification.

[0036] Weighing sensor 2.1 determines whether the counterweight model is correct by comparing the weight data transmitted by the MES. If the actual weight exceeds the set upper or lower limit, the system will issue an alarm to remind the operator to use the wrong counterweight.

[0037] 3. Signal transmission.

[0038] If the model is correctly identified, when the system receives the start signal, the signal is transmitted to servo motor 5, and servo motor 5 starts and rotates.

[0039] 4. Platform rotation.

[0040] The rotation of servo motor 5 drives the rotary gear 3.4 to rotate through gear meshing, which in turn drives the load-bearing rotating platform 3.2. The load-bearing rotating platform 3.2 drives the weighing rotating platform 1 to rotate, thereby realizing the automatic rotation of the entire working rotating platform.

[0041] 5. Position control.

[0042] Once the load-bearing rotating platform 3.2 reaches the predetermined position, the proximity switch 4 triggers a signal to the servo motor 5. Upon receiving the signal, the servo motor 5 stops working, ensuring that the platform's rotation angle accurately meets the set requirements, thus ensuring consistency between the theoretical and actual rotation angles.

[0043] 6. Move the counterweight away.

[0044] After rotating to the set angle, the worker uses a hanging chain to lift the counterweight to the overhead loop line. A forklift then removes the tooling from the weighing and rotating platform 1, completing a single loading process.

[0045] 7. The platform returns to its original position.

[0046] After the lifting action is completed, a trigger signal is sent, and servo motor 5 starts again. Servo motor 5 drives the weighing rotary platform 1 to rotate back to the initial position, preparing for the next cycle.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A forklift counterbalance auxiliary device, characterized in that, It includes a load-bearing rotating platform, a rotary gear fixed on the lower surface of the load-bearing rotating platform, and a support platform set below the rotary gear; The lower surface of the load-bearing rotating platform is equipped with several rollers along the circumference. A weighing rotating platform is provided above the load-bearing rotating platform, and several weighing units are provided between the load-bearing rotating platform and the weighing rotating platform; The rotary gear is positioned above the support platform, and its lower surface is at a distance from the support platform. The inner wall of the outer ring of the load-bearing rotating platform is provided with several T-shaped mounting brackets. A proximity switch is provided on the side wall of the T-shaped mounting bracket near the outer ring to control the servo motor. Several weighing units are set on the profile near the outer ring. The weighing unit includes a weighing sensor and a platform fixing bracket. Several weighing units are symmetrically arranged around the center of the weighing rotating platform. The two ends of the T-shaped mounting bracket are fixed to the side wall of the cross-shaped profile near the outer ring. The top of the weighing sensor is fixed to the lower surface of the weighing rotating platform, and the bottom is fixed to the upper surface of the platform fixing bracket. The platform fixing bracket is fixed to the T-shaped mounting bracket.

2. The forklift counterweight auxiliary device according to claim 1, characterized in that, The upright plate is installed on the mounting bracket. A slewing bearing is fixed on the upper surface of the support platform. A slewing gear is sleeved on the slewing bearing. A support base is provided below the support platform. The device is set in a cylindrical groove in the ground.

3. The forklift counterweight auxiliary device according to claim 1, characterized in that, Both the load-bearing rotating platform and the weighing rotating platform are discs. The disc includes an outer ring and several cross-shaped profiles set inside the outer ring. The diameter of the disc of the load-bearing rotating platform is the same as that of the disc of the weighing rotating platform.

4. The forklift counterweight auxiliary device according to claim 3, characterized in that, The load-bearing rotating platform is fixed to the slewing bearing by bolts.

5. A forklift counterweight auxiliary device according to claim 1 or 2, characterized in that, A servo motor is located below the support platform. The servo motor is connected to the drive gear above the support platform. The drive gear meshes with the rotary gear. The tip circle radius of the drive gear is smaller than that of the rotary gear. A mounting plate is fixed to the upper surface of the rotary gear by bolts. The load-bearing rotating platform is fixed to the mounting plate by bolts.

6. The forklift counterweight auxiliary device according to claim 5, characterized in that, The proximity switch is located within the circumference of the load-bearing rotating platform.

7. The forklift counterweight auxiliary device according to claim 3, characterized in that, Several rollers are provided along the circumference below the outer ring of the load-bearing rotating platform. The top of the rollers contacts the lower surface of the load-bearing rotating platform, and the bottom is mounted on the roller support assembly.

8. A control method, characterized in that, Using any one of claims 1-7, the forklift counterweight auxiliary device obtains the actual weight of the counterweight, compares it with the theoretical weight of the counterweight model in the database, and sends a signal to the system. If the weight exceeds the threshold, the system alarms; if the weight is less than the threshold, the system sends a signal to the servo motor. When the motor receives a signal, it drives the drive gear to rotate via the rotation of the servo motor. The gear meshes and drives the load-bearing rotating platform to rotate. When the load-bearing rotating component rotates to the predetermined position, the proximity switch detects the signal and triggers it, and the servo motor stops working. According to the signal from the weighing unit and the instruction from the proximity switch, the servo motor controls the rotation of the load-bearing rotating component.

9. The control method according to claim 8, characterized in that, If the servo motor malfunctions, the fault event will be reported to the system and stored in the database, and then repaired. If the servo motor is operating normally, the servo motor will drive the drive gear to rotate, and the drive gear will drive the load-bearing rotating platform to rotate. If the load-bearing rotating platform malfunctions, the fault event will be reported to the system and stored in the database, and then repaired.

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