Lifting fork
By combining ball screws and counterweight boxes, the problems of complex structure, high energy consumption and poor stability of existing lifting forks are solved, achieving high-precision positioning and high-speed operation, adapting to the needs of automated production lines, and having both vertical lifting and horizontal extension functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN KAIMISHUO PRECISION MACHINERY CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-29
AI Technical Summary
Existing lifting forks have complex structures, which increases manufacturing costs and cannot efficiently adapt to the needs of automated production lines. Furthermore, traditional cylinders and X-type lifting methods result in large size, high energy consumption, and poor stability.
The ball screw lifting method, combined with a servo motor and a counterweight box, achieves high-precision positioning and horizontal extension functions through the cooperation of the ball screw and the counterweight box. The counterweight box also reduces the torque required by the servo motor, thereby reducing energy consumption and suppressing vibration.
It achieves high-precision positioning and high-speed, high-frequency operation, reduces energy consumption, enhances applicability and operational stability, adapts to the needs of automated production lines, and has both vertical lifting and horizontal extension functions.
Smart Images
Figure CN224298833U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of logistics and warehousing technology, specifically to a lifting forklift. Background Technology
[0002] In logistics and warehousing engineering, when transferring goods between two types of equipment with different heights, manual handling or semi-automated handling with mechanical assistance is generally required, which results in low efficiency in transferring goods.
[0003] Currently, there are some forks that can lift and lower, but most of them use cylinders or X-shaped lifting frames to control the lifting and lowering of the forks. Therefore, they can be used for rail replacement with a large lifting height. However, due to the use of cylinders and telescopic frames, the size of the forks for lifting and lowering increases, the structure becomes more complex, and the manufacturing cost of the forks increases.
[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a lifting fork. Utility Model Content
[0005] The purpose of this invention is to provide a lifting fork to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a lifting fork, including a frame, with linear slide rails fixedly installed at both ends of the opposite sides of the frame, and a lifting platform slidably installed on the linear slide rails. The lifting platform has traction ropes connected to both ends of its recess, and a counterweight box is connected to the end of the traction rope away from the lifting platform. The counterweight box contains stacked counterweight plates.
[0007] Furthermore, a servo motor is provided at the bottom inner side of the frame, and a motor steering device is connected to the output end of the servo motor.
[0008] Furthermore, the motor steering gear is connected to two rotating shafts at both ends, and the motor steering gear is driven to rotate through right-angle turners at both ends of the rotating shafts.
[0009] Furthermore, a ball screw is rotatably mounted on the right-angle turner, and the ball screw is threadedly engaged with the connecting seats on both sides of the lifting platform.
[0010] Furthermore, guide shafts and guide rails are fixedly installed on the inner walls of both sides of the frame along the height direction, and the guide shafts and guide rails are slidably engaged with the counterweight box.
[0011] Furthermore, photoelectric sensors are installed at both ends of the notch of the lifting platform, and a bidirectional horizontal fork is installed in the middle of the notch of the lifting platform.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. In use, the lifting fork of this application adopts a ball screw lifting method instead of the cylinder lifting and X-type lifting methods used in traditional technology. Because it is not limited by air source pressure and mechanical structure, it has the characteristics of high repeatability and high-speed and high-frequency operation, which is more suitable for the needs of automated production lines. In addition, the setting of the bidirectional horizontal fork allows the lifting fork of this application to not only meet the vertical lifting function, but also have the horizontal extension function, making it more versatile.
[0014] 2. In use, this utility model adds a counterweight box to the ball screw jack. The counterweight box counteracts the torque generated by the load of the jack, which significantly reduces the driving force required by the servo motor system, thereby reducing energy consumption. In addition, the counterweight box effectively suppresses the vibration caused by load changes during the lifting process by balancing the weight distribution, ensuring stable operation. The number of counterweight plates in the counterweight box can be flexibly adjusted according to the actual working conditions to ensure that the system can maintain efficient and stable operation under different loads. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;
[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B.
[0018] In the diagram: 1. Frame; 2. Servo motor; 3. Motor steering gear; 4. Right-angle turner; 5. Ball screw; 6. Linear guide rail; 7. Lifting platform; 8. Traction rope; 9. Counterweight box; 10. Counterweight plate; 11. Guide shaft rail; 12. Photoelectric sensor; 13. Two-way horizontal fork. Detailed Implementation
[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0020] like Figures 1 to 3 As shown, a lifting fork includes a frame 1, with linear slide rails 6 fixedly installed at both ends of the opposite sides of the frame 1, and a lifting platform 7 slidably installed on the linear slide rails 6. The two ends of the notch of the lifting platform 7 are connected to traction ropes 8, and the end of the traction ropes 8 away from the lifting platform 7 is connected to a counterweight box 9, and counterweight plates 10 are stacked inside the counterweight box 9.
[0021] The specific operation is as follows: By adding a counterweight box 9 to the ball screw 5 lifting machine, the torque generated by the load of the lifting machine is offset by the counterweight box 9, which significantly reduces the driving force required by the servo motor 2 system, thereby reducing energy consumption. In addition, the counterweight box 9 effectively suppresses the vibration caused by load changes during the lifting process by balancing the weight distribution, ensuring stable operation. When in use, the number of counterweight plates 10 in the counterweight box 9 can be flexibly adjusted according to the actual working conditions to ensure that the system can maintain efficient and stable operation under different loads.
[0022] like Figure 1 As shown, a servo motor 2 is installed at the bottom inner side of the frame 1, and a motor steering gear 3 is connected to the output end of the servo motor 2. A rotating shaft is connected to both ends of the motor steering gear 3, and the motor steering gear 3 is driven to rotate through the rotating shaft to the right-angle anglers 4 at both ends. A ball screw 5 is rotatably installed on the right-angle anglers 4, and the ball screw 5 is threadedly engaged with the connecting seats on both sides of the lifting platform 7. Guide shaft rails 11 are fixedly installed on the inner walls of both sides of the frame 1 along the height direction, and the guide shaft rails 11 are slidably engaged with the counterweight box 9. Photoelectric sensors 12 are installed at both ends of the recess of the lifting platform 7, and a bidirectional horizontal fork 13 is installed in the middle of the recess of the lifting platform 7.
[0023] The specific operation is as follows: The lifting fork of this application adopts the ball screw 5 lifting method to replace the cylinder lifting and X-type lifting methods used in traditional technology. Because it is not limited by air source pressure and mechanical structure, it has the characteristics of high repeatability and high-speed and high-frequency operation, which is more suitable for the needs of automated production lines. In addition, the setting of the bidirectional horizontal fork 13 makes the lifting fork of this application not only meet the vertical lifting function, but also have the horizontal extension function, making it more applicable.
[0024] Working Principle: When using this type of lifting fork, the lifting fork of this application adopts a ball screw 5 lifting method instead of the cylinder lifting and X-type lifting methods used in traditional technology. Because it is not limited by air source pressure and mechanical structure, it has the characteristics of high repeatability and high-speed and high-frequency operation, which is more suitable for the needs of automated production lines. In addition, the setting of the bidirectional horizontal fork 13 allows the lifting fork of this application to not only meet the vertical lifting function but also have a horizontal extension function, making it more versatile. By adding a counterweight box 9 to the ball screw 5 lifting machine, the torque generated by the load of the lifting machine is offset by the counterweight box 9, which significantly reduces the driving force required by the servo motor 2 system, thereby reducing energy consumption. In addition, the counterweight box 9 effectively suppresses the vibration caused by load changes during the lifting process by balancing the weight distribution, ensuring stable operation. When in use, the number of counterweight plates 10 in the counterweight box 9 can be flexibly adjusted according to the actual working conditions, ensuring that the system can maintain efficient and stable operation under different loads.
[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A lifting fork, comprising a frame (1), characterized in that, Linear slide rails (6) are fixedly installed on both ends of the opposite sides of the frame (1) on both sides, and a lifting platform (7) is slidably installed on the linear slide rails (6). The lifting platform (7) has traction ropes (8) connected to both ends of the notch, and a counterweight box (9) is connected to the end of the traction rope (8) away from the lifting platform (7), and counterweight plates (10) are stacked inside the counterweight box (9).
2. The lifting fork according to claim 1, characterized in that, A servo motor (2) is provided at the bottom inner side of the frame (1), and a motor steering device (3) is connected to the output end of the servo motor (2).
3. A lifting fork according to claim 2, characterized in that, The motor steering gear (3) is connected to a rotating shaft at both ends, and the motor steering gear (3) is rotated through the right-angle turners (4) at both ends of the rotating shaft.
4. A lifting fork according to claim 3, characterized in that, A ball screw (5) is rotatably mounted on the right-angle turner (4), and the ball screw (5) is threadedly engaged with the connecting seats on both sides of the lifting platform (7).
5. A lifting fork according to claim 4, characterized in that, The inner walls on both sides of the frame (1) are fixedly installed with guide shaft rails (11) along the height direction, and the guide shaft rails (11) slide with the counterweight box (9).
6. A lifting fork according to claim 5, characterized in that, The lifting platform (7) is equipped with photoelectric sensors (12) at both ends of the notch, and a bidirectional horizontal fork (13) is provided in the middle of the notch.