Forklift balancing weight turning shaking prevention structure
By employing a combination of fixed buffer components, self-locking nuts, and disc springs in the forklift counterweight, along with an anti-rotation pin design, the problem of vehicle body swaying caused by the easy loosening of traditional bolts is solved, thus achieving stability and shock absorption for the forklift.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU MEIYI FILTER EQUIP CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-24
AI Technical Summary
The existing forklift counterweights are prone to loosening during operation due to the traditional bolt-fixed design, causing the vehicle body to sway and affecting stability.
It adopts a combination structure of fixed buffer, self-locking nut and disc spring, combined with anti-rotation pin design, threaded connection and anti-loosening coating to ensure a stable connection, and composite shock absorption structure to reduce the impact of vibration.
It effectively prevents the counterweight from swaying during turns, improves the stability of the forklift, reduces structural wear, and ensures a stable connection and shock absorption effect for the vehicle body.
Smart Images
Figure CN224160343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial vehicle technology, specifically to a counterweight structure for forklifts that prevents swaying during turns. Background Technology
[0002] Forklifts are industrial material handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transportation of palletized goods. Forklifts play a crucial role in a company's logistics system and are the mainstay of material handling equipment. They are widely used in transportation at stations, ports, airports, factories, warehouses, and other locations.
[0003] The counterweight is an important component of a counterweight forklift. Its main function is to balance the overturning moment generated by the weight of the goods during operation, thereby maintaining the stability of the forklift.
[0004] Existing forklift counterweights typically use traditional bolt-fixed connections during operation, which are prone to loosening under long-term torque, causing the vehicle to sway. Therefore, there is a need to invent a forklift counterweight structure that prevents swaying during turns. Utility Model Content
[0005] The purpose of this invention is to provide a counterbalance structure for forklifts to prevent swaying during turns, in order to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A forklift counterweight anti-sway structure includes a counterweight and an anti-rotation pin. The counterweight has a fixed buffer inside, and a frame is provided on the surface of the fixed buffer. The anti-rotation pin is located inside the counterweight and passes through both sides of the fixed buffer and the frame.
[0008] The fixed buffer component includes a buffer plate, a self-locking nut, and a disc spring. The buffer plate is installed inside the counterweight. The self-locking nut is threaded to both sides of the counterweight. The self-locking nut is threaded through and connected to one side of the buffer plate and the frame. Double-ended threaded posts are threaded through and connected to both sides of the buffer plate. The double-ended threaded posts are threaded through the counterweight, the frame, and the buffer plate. The disc spring is fixedly connected to both sides of the buffer plate. One end of the buffer plate is fixedly connected to the inside of the counterweight. The buffer plate is located on one side of the self-locking nut and the double-ended threaded post.
[0009] The anti-rotation pin includes a pin shaft, a pin shaft baffle, and a locking disc. The pin shaft baffle is provided with a positioning hole and a locking hole. A rotating disc is embedded in the positioning hole. One end of the rotating disc is provided with a locking end, and the other end is welded and fixed to the pin shaft. The locking disc is embedded in the locking hole. The pin shaft is fixed to the rotating disc on the pin shaft baffle, and the pin shaft will rotate together with the rotating disc.
[0010] A further improvement of this utility model is that: the positioning hole is provided with a rotating groove, which is fitted and connected to the rotating disk. When fixing the pin, it is only necessary to fit the screw head on the locking disk into the locking hole.
[0011] A further improvement of this utility model is that: the pin baffle is located on the outer side, and the pin is fixed through the limiting holes of the counterweight, the buffer plate and the frame. By rotating the locking disc, the locking disc is driven by a thread, since the diameter of the locking disc is larger than that of the rotating disc.
[0012] A further improvement of this utility model is that the diameter of the locking disc is larger than the diameter of the rotating disc, the locking disc is connected to the locking end, and the locking disc is connected to the locking end on the rotating disc, thereby achieving the effect of locking the locking disc.
[0013] A further improvement of this utility model is that: the locking disc is provided with a screw head, the locking hole is a screw hole, the screw head is threadedly connected to the locking hole, and the locking disc is locked to fix the pin.
[0014] A further improvement of this utility model is that a rubber gasket is bonded to the mating surface of the locking disc. The rubber gasket is bonded and fixed to the mating surface of the locking disc by strong adhesive. The screw head is threadedly connected to the screw hole, which can realize the threaded transmission of the locking disc and achieve the purpose of locking the locking end through the threaded transmission.
[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0016] This utility model provides a counterweight anti-sway structure for forklifts. The pin is fixed to a rotating disk on the pin baffle. The pin rotates together with the rotating disk. To fix the pin, simply engage the screw head on the locking disk with the locking hole. By rotating the locking disk, the locking disk is driven by threads. Since the diameter of the locking disk is larger than that of the rotating disk, the locking disk connects with the locking end on the rotating disk, thereby achieving the locking effect. The locking of the locking disk fixes the pin, avoiding wear during pin rotation, which could lead to excessive play and damage to the counterweight, thus reducing vehicle body sway.
[0017] This utility model provides a counterweight anti-sway structure for forklifts. The counterweight, frame, and buffer plate are threadedly fixed by self-locking nuts and double-ended threaded studs. The surface of the studs is coated with an anti-loosening coating. The buffer plate symmetrically covers the contact surface of the counterweight to avoid local stress concentration that could cause frame deformation. Disc springs are distributed in a ring around the bolts, with a set (3 stacked springs) for each bolt to ensure uniform force distribution. The buffer plate is spaced >5mm from the anti-sway pin and the limiting hole to prevent structural interference due to vibration. The buffer plate is a composite shock-absorbing structure consisting of a horizontal buffer layer and a vertical buffer layer, which can dampen the counterweight during operation, allowing the counterweight to be stably connected to the frame and reducing vibration between the counterweight and the frame. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the counterweight structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the anti-rotation pin structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the pin shaft baffle of this utility model;
[0022] Figure 5 This is a schematic diagram of the positioning hole of this utility model;
[0023] Figure 6 This is a schematic diagram of the locking end of this utility model.
[0024] In the diagram: 1. Counterweight; 2. Frame; 3. Fixed buffer; 30. Disc spring; 32. Double-ended threaded post; 33. Self-locking nut; 34. Buffer plate; 5. Anti-rotation pin; 50. Pin; 51. Pin baffle; 52. Positioning hole; 53. Locking disc; 54. Locking hole; 55. Rotary disc; 56. Locking end. Detailed Implementation
[0025] The present invention will be further described in detail below with reference to embodiments: Example 1
[0026] like Figure 1-6 As shown, this utility model provides a forklift counterweight anti-sway structure, including a counterweight 1 and an anti-rotation pin 5. A fixed buffer 3 is provided inside the counterweight 1, and a frame 2 is provided on the surface of the fixed buffer 3. The anti-rotation pin 5 is provided inside the counterweight 1 and is provided through the fixed buffer 3 and the frame 2 on both sides.
[0027] The fixed buffer component 3 includes a buffer plate 34, a self-locking nut 33, and a butterfly spring 30. The buffer plate 34 is installed inside the counterweight 1. The self-locking nut 33 is threaded to both sides of the counterweight 1. The self-locking nut 33 is threaded through and connected to one side of the buffer plate 34 and the frame 2. Double-ended threaded posts 32 are threaded through and connected to both sides of the buffer plate 34. The double-ended threaded posts 32 are threaded through and connected to both sides of the counterweight 1, the frame 2, and the buffer plate 34. The butterfly spring 30 is fixedly connected to both sides of the buffer plate 34. One end of the buffer plate 34 is fixedly connected to the inside of the counterweight 1. The buffer plate 34 is located on one side of the self-locking nut 33 and the double-ended threaded post 32.
[0028] Specifically, the counterweight 1, frame 2, and buffer plate 34 are threadedly fixed by self-locking nuts 33 and double-ended threaded studs 32. The surface of the studs is coated with an anti-loosening coating. The buffer plate 34 symmetrically covers the contact surface of the counterweight 1 to avoid local stress concentration that could cause frame deformation. Disc springs 30 are distributed in a ring around the bolts, with a set (3 stacked springs) for each bolt to ensure uniform force distribution. The buffer plate 34 is kept at a distance of >5mm from the anti-rotation pin 5 and the limiting hole to prevent structural interference due to vibration. The buffer plate 34 is a composite shock-absorbing structure consisting of a horizontal buffer layer and a vertical buffer layer, which can provide shock absorption for the counterweight 1 during operation. Example 2
[0029] like Figure 1-6 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the anti-rotation pin 5 includes a pin 50, a pin baffle 51, and a locking disc 53. The pin baffle 51 is provided with a positioning hole 52 and a locking hole 54. A rotating disc 55 is fitted into the positioning hole 52. One end of the rotating disc 55 is provided with a locking end 56, and the other end is welded and fixed to the pin 50. The locking disc 53 is fitted into the locking hole 54. A rotating groove is provided in the positioning hole 52, and the rotating groove is fitted into the rotating disc 55. The connection is as follows: the pin baffle 51 is set on the outside of the counterweight 1, and 50 is fixed through the limit hole of the counterweight 1, the buffer plate 34 and the frame 2. The diameter of the locking plate 53 is larger than the diameter of the rotating plate 55. The locking plate 53 is connected to the locking end 56. The locking plate 53 is provided with a screw head, and the locking hole 54 is a screw hole. The screw head is threadedly connected to the locking hole 54. A rubber gasket is glued to the mating plate surface of the locking plate 53. The rubber gasket is glued and fixed to the mating plate surface of the locking plate 53 by strong adhesive.
[0030] Specifically, the rotating groove and the rotating disk 55 are engaged to achieve the limited rotation of the rotating disk 55. The locking disk 53 is larger than the rotating disk 55, so the locking disk 53 can be connected to the locking end 56 to achieve limited locking. The screw head and the screw hole are threadedly connected to achieve the threaded transmission of the locking disk 53. The locking end 56 is locked through the threaded transmission. When the locking disk 53 is connected to the locking end 56, the rubber gasket enhances the friction on the locking end 56.
[0031] Since the pin 50 is fixed to the rotating disk 55 on the pin baffle 51, the pin 50 will rotate together with the rotating disk 55. When fixing the pin 50, simply engage the screw head on the locking disk 53 with the locking hole 54. By rotating the locking disk 53, the locking disk 53 will perform threaded transmission. Since the diameter of the locking disk 53 is larger than that of the rotating disk 55, the locking disk 53 will connect with the locking end 56 on the rotating disk 55, thereby achieving the locking effect of the locking disk 53. The locking of the locking disk 53 will fix the pin 50, avoiding wear and tear when the pin 50 rotates, which would lead to excessive play and damage to the balance weight 1.
[0032] The working principle of the forklift's counterweight anti-sway structure during turns will be explained in detail below.
[0033] like Figure 1-6 As shown, the counterweight 1, frame 2, and buffer plate 34 are threadedly fixed by self-locking nuts 33 and double-ended threaded studs 32. The surface of the studs is coated with an anti-loosening coating. The buffer plate 34 symmetrically covers the contact surface of the counterweight 1 to avoid local stress concentration that could cause frame deformation. Disc springs 30 are distributed in a ring around the bolts, with one set (3 stacked springs) for each bolt to ensure uniform force distribution. The buffer plate 34 maintains a distance of >5mm from the anti-rotation pin 5 and the limiting hole to prevent structural interference due to vibration. The buffer plate 34 is a composite shock-absorbing structure consisting of a horizontal buffer layer and a vertical buffer layer, which can dampen the counterweight 1 during operation. Since the pin 50 is fixed to the rotating disk 55 on the pin baffle 51, the pin 50 will rotate together with the rotating disk 55. When fixing the pin 50, simply engage the screw head on the locking disk 53 with the locking hole 54. By rotating the locking disk 53, the locking disk 53 will perform threaded transmission. Since the diameter of the locking disk 53 is larger than that of the rotating disk 55, the locking disk 53 will connect with the locking end 56 on the rotating disk 55, thereby achieving the locking effect of the locking disk 53. The locking of the locking disk 53 will fix the pin 50, avoiding wear and tear when the pin 50 rotates, which would lead to excessive play and damage to the balance weight 1.
[0034] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A counterbalance structure for forklifts to prevent swaying during turns, comprising a counterbalance (1) and an anti-swerving pin (5), characterized in that: The counterweight (1) is provided with a fixed buffer (3) inside, and a frame (2) is provided on the surface of the fixed buffer (3). The anti-rotation pin (5) is provided on the inside of the counterweight (1), and the anti-rotation pin (5) is provided through the fixed buffer (3) and the frame (2) on both sides. The fixed buffer component (3) includes a buffer plate (34), a self-locking nut (33), and a disc spring (30). The buffer plate (34) is installed inside the counterweight (1). The self-locking nut (33) is threaded to both sides of the counterweight (1). The self-locking nut (33) is threaded through and connected to one side of the buffer plate (34) and the frame (2). Double-ended threaded posts (32) are threaded through and connected to both sides of the buffer plate (34). The double-ended threaded posts (32) are threaded through and threaded on both sides of the counterweight (1), the frame (2), and the buffer plate (34). The disc spring (30) is fixedly connected to both sides of the buffer plate (34). One end of the buffer plate (34) is fixedly connected to the inside of the counterweight (1). The buffer plate (34) is located on one side of the self-locking nut (33) and the double-ended threaded post (32). The anti-rotation pin (5) includes a pin shaft (50), a pin shaft baffle (51), and a locking disc (53). The pin shaft baffle (51) is provided with a positioning hole (52) and a locking hole (54). A rotating disc (55) is embedded in the positioning hole (52). One end of the rotating disc (55) is provided with a locking end (56), and the other end is welded and fixed to the pin shaft (50). The locking disc (53) is embedded in the locking hole (54).
2. The forklift counterweight anti-swaying structure according to claim 1, characterized in that: The positioning hole (52) is provided with a rotating groove, which is fitted and connected to the rotating disk (55).
3. The forklift counterweight anti-swaying structure according to claim 2, characterized in that: The pin baffle (51) is located on the outside of the counterweight (1), and the pin (50) is fixed through the limiting hole of the counterweight (1), the buffer plate (34) and the frame (2).
4. The forklift counterweight anti-swaying structure according to claim 1, characterized in that: The diameter of the locking disc (53) is larger than the diameter of the rotating disc (55), and the locking disc (53) is connected to the locking end (56).
5. The forklift counterweight anti-swaying structure according to claim 4, characterized in that: The locking disc (53) is provided with a screw head, and the locking hole (54) is a screw hole. The screw head is threadedly connected to the locking hole (54).
6. The forklift counterweight anti-swaying structure according to claim 5, characterized in that: A rubber gasket is bonded to the mating surface of the locking disc (53), and the rubber gasket is bonded and fixed to the mating surface of the locking disc (53) by strong adhesive.