Balance wheel tension spring structure
By designing a balance wheel tension spring structure, the spring force generated by the deformation of the tension spring is utilized to solve the problem of tipping or overturning caused by the change of center of gravity during the lifting of the mast of the forklift, thus achieving the stability and rapid adjustment effect of the forklift.
Patent Information
- Application Number
- CN202423055843.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing forklifts have safety issues due to changes in the center of gravity during mast lifting, which can lead to overall tipping or overturning. Furthermore, the drive wheels cannot be adjusted or quickly adjusted when in a rigid state.
Design a balance wheel tension spring structure including a wheel frame, a balance wheel assembly, and a tension spring. The spring force is generated by the deformation of the tension spring, so that the balance wheel assembly maintains ground pressure when the mast is raised, thus ensuring vehicle stability.
It achieves vehicle stability after the mast is raised, reduces vibration when crossing bumps, and can quickly adjust the position of the balance wheel, thus solving the risk of forklift tipping or overturning during transportation.
Smart Images
Figure CN223705105U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of forklift accessories relates to a balanced wheel pull spring structure. BACKGROUND
[0002] Forklift is industrial handling vehicle, refers to the various wheel type handling vehicles of loading and unloading, stacking and short distance transport operation to the palletized goods.The existing forklift often needs to lift the portal to ensure normal operation when operating, but in the process of portal lifting, the overall gravity center of forklift will change, so that after the portal is lifted, the forklift will cause the safety problem of overall forward dumping or side turning of forklift in transportation engineering or when quickly crossing the dam.
[0003] Therefore, a balanced wheel pull spring structure is designed to overcome the above problems. CONTENT OF UTILITY MODEL
[0004] The utility model aims at overcoming the deficiencies of prior art, and provides a balanced wheel pull spring structure which is simple and reasonable in structure, simple in installation and dismounting, convenient to adjust and high in practicality.
[0005] The utility model is realized through the following technical scheme: a balanced wheel pull spring structure, including wheel frame, balanced wheel assembly arranged below the wheel frame and pull spring, the wheel frame is composed of a long strip-shaped shaft, balanced wheel fixed seat and mounting seat arranged on the shaft respectively, each balanced wheel fixed seat is arranged at the position close to the both side end portions of the shaft, a balanced wheel assembly is installed at the bottom of each balanced wheel fixed seat, and the mounting seat is installed at the both side end portions of the shaft outside the balanced wheel fixed seat, the top surface of the mounting seat is connected with the forklift frame through bolt, two connecting rods are fixedly connected with the middle position of the shaft close to the shaft on the side away from the balanced wheel fixed seat, the interval is arranged between the two connecting rods, and one end of the pull spring arranged vertically is movably connected with the side end portion of each connecting rod away from the shaft, the other end of the pull spring is provided with pull spring mounting block, the pull spring mounting block is used as the movable end of the balanced wheel pull spring structure, is installed on the portal and is used for being connected with the lifting part of the portal, the lifting of the rack of the pull spring mounting side, the pull spring is deformed upwards, spring force is generated, the balanced wheel assembly is subjected to downward force, so that when the forklift fork is at high position, the balanced wheel assembly can have a pressure on the ground, and the stability of vehicle when walking is ensured.
[0006] Preferably, the two sides of the balance wheel fixing seat are bent downward to form limiting edges. Limiting grooves corresponding to the limiting edges are provided on the sides of the shaft near both ends. The limiting edges are inserted into the limiting grooves to achieve the locking and fixing of the balance wheel fixing seat and the shaft. A circular through hole is provided in the middle of the balance wheel fixing seat, and four evenly arranged screw holes are provided around the circular through hole. Screws are inserted into each screw hole to realize the installation between the balance wheel fixing seat and the balance wheel assembly.
[0007] Preferably, the mounting base has a T-shaped structure with four evenly arranged bolt holes around the top surface of the mounting base. Bolts are inserted into the bolt holes to fix the top surface of the mounting base to the forklift frame. The lower part of the mounting base has a horizontal through hole. A flanged oilless bearing is installed between the mounting base and the shaft, and an L-shaped rotating shaft is inserted into the through hole to fix the mounting base and the shaft.
[0008] Preferably, the L-shaped shaft is provided with a fixing through hole, and mounting holes corresponding to the fixing through hole are respectively provided on the lower part of the mounting base and on the limiting edge of the balance wheel fixing base. After the first bolt passes through the fixing through hole and the mounting holes on the mounting base and the limiting edge in sequence, it is fixed by the nut, thereby limiting and fixing the mounting base and the balance wheel fixing base respectively. This is used to cooperate with the spring deformation to generate spring force, while the balance wheel assembly below the balance wheel fixing base is subjected to a downward force, so that when the forklift forks are in a high position, the balance wheel assembly can have a pressure against the ground, ensuring the stability of the vehicle when it is moving.
[0009] Preferably, the tension spring is provided with an upper hook ring and a lower hook ring at its upper and lower ends, respectively. The connecting rod and the tension spring mounting block are respectively provided with a first mounting hole and a second mounting hole corresponding to the upper hook ring and the lower hook ring. A washer is installed between the first mounting hole and the upper hook ring, and a screw with a first bushing is inserted into the first mounting hole and the upper hook ring to fix the upper hook ring to the tension spring mounting block. A second bolt with a second bushing is inserted between the second mounting hole and the lower hook ring, and a nut is installed to realize the movable connection between the lower hook ring and the connecting rod.
[0010] Preferably, the tension spring mounting block has two vertically arranged mounting through holes on the side away from the tension spring to ensure the stability of the tension spring mounting block after installation with the gantry.
[0011] Preferably, the balance wheel assembly consists of an inverted U-shaped balance wheel mounting bracket and a balance wheel. The inverted U-shaped balance wheel mounting bracket is installed directly above the balance wheel and is fixed to the balance wheel with screws and nuts. Four screw through holes corresponding to the screw holes of the balance wheel mounting seat are provided around the top surface of the balance wheel mounting bracket. A mounting groove corresponding to the circular through hole is provided in the middle of the top surface. Screws are inserted into each screw through hole and screw hole to connect and fix the balance wheel mounting bracket to the balance wheel mounting seat. A connecting post is inserted into the mounting groove to fix the balance wheel mounting bracket to the forklift frame.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. This utility model can adjust the tension stroke of the tension spring by adjusting the sheet metal structure, thereby controlling the pressure of the balance wheel on the ground. This mechanism has a wider range of applications.
[0014] 2. The tension spring of this utility model deforms relatively quickly, and can adjust the position of the balance wheel in time when quickly crossing the bump, reducing vibration when crossing the bump;
[0015] 3. The overall structure of this utility model can also solve the problem that the balance wheels on both sides cannot be adjusted or cannot be adjusted quickly when the drive wheel is in a rigid state;
[0016] 4. The first and second bushings provided in this utility model can greatly improve the stability of the gantry connected by this utility model during the lifting process. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a structural diagram of the tension spring mounting block in this utility model;
[0019] Figure 3 This is a structural diagram of the tension spring portion in this utility model;
[0020] Figure 4 This is a structural diagram of the L-shaped rotating shaft in this utility model;
[0021] Figure 5 This is a structural diagram of the balance wheel assembly in this utility model;
[0022] Figure 6 This is a schematic diagram of the overall operation of this utility model. Detailed Implementation
[0023] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0024] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] The present invention will now be described in detail with reference to the accompanying drawings: Figures 1-3 As shown, a balance wheel tension spring structure includes a wheel frame, a balance wheel assembly disposed directly below the wheel frame, and a tension spring 5. The wheel frame consists of a long strip-shaped axle 1, balance wheel fixing seats 2 and mounting seats 3 respectively disposed on the axle 1. Each balance wheel fixing seat 2 is respectively disposed (by mounting or direct welding, etc.) near the two ends of the axle 1. A balance wheel assembly is installed at the bottom of each balance wheel fixing seat 2, and mounting seats 3 are respectively installed on the two ends of the axle 1 on the outer side of the balance wheel fixing seat 2. The top surface of the mounting seat 3 is connected to the forklift frame by bolts. The axle 1 is located away from the balance wheel fixing seat 2. Two connecting rods 4 are fixedly connected to the middle position of the axle 1 on one side, with a gap between the two connecting rods 4. The end of each connecting rod 4 away from the axle 1 is movably connected to one end of a vertically arranged tension spring 5. The other end of the tension spring 5 is equipped with a tension spring mounting block 6. The tension spring mounting block 6 serves as the movable end of the balance wheel tension spring structure and is installed on the mast for connection with the mast lifting part. When the shelf on the tension spring mounting side is raised, it pulls the tension spring 5 upward to deform, generating spring force, which causes the balance wheel assembly to be subjected to a downward force. This ensures that when the forklift forks are in a high position, the balance wheel assembly can have a ground pressure, guaranteeing the stability of the vehicle when it is moving.
[0026] The balance wheel tension spring structure designed in this invention allows the balance wheel to adjust its height as the vehicle frame is raised, ensuring the balance wheel remains in contact with the ground. This balance wheel structure is simple, easy to adjust, and highly practical. This invention not only effectively solves the safety problem of forklifts potentially tipping forward or overturning during transport or when quickly crossing obstacles due to the shifting center of gravity after the mast is raised, but also effectively overcomes the problem of the balance wheels on both sides being unable to be adjusted or quickly adjusted when the drive wheels are rigid.
[0027] The balance wheel fixing seat 2 extends downward on both sides to form limiting edges 7. Limiting grooves 8 corresponding to the limiting edges 7 are provided on the side of the shaft 1 near both ends. The limiting edges 7 are partially inserted into the limiting grooves 8 to achieve the locking and fixing of the balance wheel fixing seat 2 and the shaft 1. A circular through hole 9 is provided in the middle of the balance wheel fixing seat 2, and four evenly arranged screw holes 10 are provided around the circular through hole 9. A screw is inserted into each screw hole 10 to achieve the installation between the balance wheel fixing seat 2 and the balance wheel assembly.
[0028] like Figure 4 As shown, the mounting base 3 has a T-shaped structure. Four evenly arranged bolt holes 11 are provided around the top surface of the mounting base 3. Bolts are inserted into the bolt holes 11 to fix the top surface of the mounting base 3 to the forklift frame. The lower part of the mounting base 3 is provided with a horizontal through hole 12. A flanged oilless bearing 13 is installed between the mounting base 3 and the shaft 1. An L-shaped rotating shaft 14 is inserted into the through hole 12 to fix the mounting base 3 to the shaft 1.
[0029] The L-shaped rotating shaft 14 is provided with a fixing through hole 15, and mounting holes 16 corresponding to the fixing through hole 15 are respectively provided on the lower part of the mounting base 3 and the limiting edge 7 of the balance wheel fixing base 2. The first bolt 29 passes through the fixing through hole 15 and the mounting holes 16 on the mounting base and the limiting edge in sequence, and is then fixed by a nut. This achieves the limiting and fixing of the mounting base 3 and the balance wheel fixing base 2, so that while the tension spring 5 deforms to generate spring force, the balance wheel assembly below the balance wheel fixing base 2 is subjected to a downward force. This ensures that when the forklift forks are in a high position, the balance wheel assembly can have a pressure against the ground, thus ensuring the stability of the vehicle when it is moving.
[0030] The mounting base of this utility model is fixed on the forklift frame and serves as the fixed end of the entire structure. The two ends of the rod shaft are connected to the mounting seats on both sides through L-shaped rotating shafts and flanged oil-free bushings, allowing the entire rod shaft to rotate along the rotating shafts, thereby ensuring the normal use of this utility model.
[0031] The upper and lower ends of the tension spring 5 are respectively provided with an upper hook ring 17 and a lower hook ring 18. The connecting rod 4 and the tension spring mounting block 6 are respectively provided with a first mounting hole 19 and a second mounting hole 20 corresponding to the upper hook ring 17 and the lower hook ring 18. A washer 32 is installed between the first mounting hole 19 and the upper hook ring 17. A screw 33 with a first bushing 21 is inserted into the first mounting hole 19 and the upper hook ring 17 to fix the upper hook ring 17 to the tension spring mounting block 6. A second bolt 23 with a second bushing 22 is inserted between the second mounting hole 20 and the lower hook ring 18, and a nut is installed to realize the movable connection between the lower hook ring 18 and the connecting rod 4.
[0032] The tension spring is connected to the tension spring mounting block and the connecting shaft on the wheel frame by screws and nuts. At the same time, bushings are added to the screws of the upper and lower hook rings of the tension spring to improve the stability of the structure of this utility model during the lifting process of the gantry.
[0033] The tension spring mounting block 6 has two vertically arranged mounting holes 24 on the side away from the tension spring 5 to ensure the stability of the tension spring mounting block 6 after installation with the gantry.
[0034] The balance wheel tension spring structure of this utility model uses the lifting of the rack on the tension spring mounting side to deform the tension spring and generate spring force. Through the rotation structure of the wheel frame, the balance wheel assembly is subjected to a downward force, so that when the forks are in a high position, the balance wheel can have a ground pressure, ensuring the stability of the vehicle when it is moving.
[0035] like Figures 5-6 As shown, the balance wheel assembly consists of an inverted U-shaped balance wheel mounting bracket 25 and a balance wheel 26. The inverted U-shaped balance wheel mounting bracket 25 is installed directly above the balance wheel 26 and is fixed to the balance wheel 26 by screws and nuts. Four screw through holes 27 corresponding to the screw holes 10 of the balance wheel mounting seat are provided around the top surface of the balance wheel mounting bracket 25. A mounting groove 28 corresponding to the circular through hole 9 is provided in the middle of the top surface. Screws 30 are inserted into each screw through hole 27 and screw hole 10 to connect and fix the balance wheel mounting bracket 25 to the balance wheel mounting seat 2. A connecting post is inserted into the mounting groove 28 to fix the balance wheel mounting bracket 25 to the forklift frame.
[0036] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A balance wheel tension spring structure, comprising a wheel frame, a balance wheel assembly disposed directly below the wheel frame, and a tension spring (5), characterized in that: The wheel frame consists of a long strip-shaped axle (1), balance wheel fixing seats (2) and mounting seats (3) respectively mounted on the axle (1). Each balance wheel fixing seat (2) is located near the two ends of the axle (1). A balance wheel assembly is installed at the bottom of each balance wheel fixing seat (2), and mounting seats (3) are installed on the two ends of the axle (1) on the outside of the balance wheel fixing seat (2). The top surface of the mounting seat (3) is connected to the forklift frame by bolts. Two connecting rods are fixedly connected to the axle (1) near the middle of the axle (1) on the side away from the balance wheel fixing seat (2). The rod (4) has a gap between the two connecting rods (4). The end of each connecting rod (4) away from the shaft (1) is movably connected to one end of the vertically arranged tension spring (5). The other end of the tension spring (5) is equipped with a tension spring mounting block (6). The tension spring mounting block (6) serves as the movable end of the balance wheel tension spring structure and is installed on the mast for connection with the mast lifting part. When the shelf on the tension spring mounting side is lifted, it pulls the tension spring (5) upward to deform and generate spring force, so that the balance wheel assembly is subjected to a downward force. This ensures that when the forklift forks are in a high position, the balance wheel assembly can have a pressure on the ground, thus ensuring the stability of the vehicle when it is moving.
2. The balance wheel tension spring structure according to claim 1, characterized in that: The balance wheel fixing seat (2) extends downward on both sides to form limiting edges (7). A limiting groove (8) corresponding to the limiting edge (7) is provided on the side of the shaft (1) near both ends. The limiting edge (7) is partially inserted into the limiting groove (8) to achieve the locking and fixing of the balance wheel fixing seat (2) and the shaft (1). A circular through hole (9) is provided in the middle of the balance wheel fixing seat (2), and four evenly arranged screw holes (10) are provided around the circular through hole (9). A screw is inserted into each screw hole (10) to achieve the installation between the balance wheel fixing seat (2) and the balance wheel assembly.
3. The balance wheel tension spring structure according to claim 1 or 2, characterized in that: The mounting base (3) is a T-shaped structure. Four evenly arranged bolt holes (11) are provided around the top surface of the mounting base (3). Bolts are inserted into the bolt holes (11) to fix the top surface of the mounting base (3) to the forklift frame. A horizontal through hole (12) is provided at the bottom of the mounting base (3). A flanged oilless bearing (13) is installed between the mounting base (3) and the shaft (1). An L-shaped rotating shaft (14) is inserted into the through hole (12) to fix the mounting base (3) and the shaft (1).
4. The balance wheel tension spring structure according to claim 3, characterized in that: The L-shaped rotating shaft (14) is provided with a fixed through hole (15), and mounting holes (16) corresponding to the fixed through hole (15) are provided on the lower part of the mounting base (3) and the limiting edge (7) of the balance wheel fixing base (2). The first bolt (29) passes through the fixed through hole (15) and the mounting holes (16) on the mounting base and the limiting edge in sequence, and is then fixed by the nut. This achieves the limiting and fixing of the mounting base (3) and the balance wheel fixing base (2), so that while the tension spring (5) deforms to generate spring force, the balance wheel assembly below the balance wheel fixing base (2) is subjected to downward force, so that when the forklift forks are in a high position, the balance wheel assembly can have a pressure on the ground, ensuring the stability of the vehicle when it is moving.
5. The balance wheel tension spring structure according to claim 4, characterized in that: The upper and lower ends of the tension spring (5) are respectively provided with an upper hook ring (17) and a lower hook ring (18). The connecting rod (4) and the tension spring mounting block (6) are respectively provided with a first assembly hole (19) and a second assembly hole (20) corresponding to the upper hook ring (17) and the lower hook ring (18). A washer (32) is installed between the first assembly hole (19) and the upper hook ring (17). A screw (33) with a first bushing (21) is inserted into the first assembly hole (19) and the upper hook ring (17) to realize the installation and fixation between the upper hook ring (17) and the tension spring mounting block (6). A second bolt (23) with a second bushing (22) is inserted between the second assembly hole (20) and the lower hook ring (18). A nut is installed to realize the movable connection between the lower hook ring (18) and the connecting rod (4).
6. The balance wheel tension spring structure according to claim 5, characterized in that: The tension spring mounting block (6) has two mounting through holes (24) arranged vertically on the side away from the tension spring (5) to ensure the stability of the tension spring mounting block (6) and the gantry after installation.
7. The balance wheel tension spring structure according to claim 2 or 6, characterized in that: The balance wheel assembly consists of an inverted U-shaped balance wheel bracket (25) and a balance wheel (26). The inverted U-shaped balance wheel bracket (25) is installed directly above the balance wheel (26) and is fixed to the balance wheel (26) by screws and nuts. Four screw through holes (27) corresponding to the screw holes (10) of the balance wheel mounting seat are provided around the top surface of the balance wheel bracket (25). A mounting groove (28) corresponding to the circular through hole (9) is provided in the middle of the top surface. Screws (30) are inserted into each screw through hole (27) and screw hole (10) to achieve the connection and fixation between the balance wheel bracket (25) and the balance wheel mounting seat (2). A connecting column is inserted into the mounting groove (28) to achieve the fixation between the balance wheel bracket (25) and the forklift frame.