Fork jacking synchronous gearbox mounting structure for four-way shuttle vehicle

Abstract

The utility model relates to a pallet fork jacking synchronous gear box mounting structure for a four-way shuttle vehicle, which comprises a gear box, a jacking gear train is mounted in the gear box, the jacking gear train comprises two driving gears, at least one stage of intermediate gear is arranged between the driving gears, and the two stages of intermediate gears are meshed with each other. The two driving gears are connected with eccentric wheel driving shafts through keys respectively, the eccentric wheel driving shafts extend out of the gear box, a pair of key grooves are formed in the two driving gears in a 180-degree mode, two flat keys are installed on the same side of the eccentric wheel driving shafts, and the centers of the two flat keys are located on the same straight line. Wherein the key positioned in the gear box is matched with one key slot in the driving gear; the keys located on the outer side of the gearbox are connected with positioning reference blocks enabling the two flat keys on the eccentric wheel driving shaft to be vertically upward, and the positioning reference blocks are fixedly connected to vertical plates on the outer side of the gearbox through fasteners. The synchronous upward orientation and accurate orientation positioning of the eccentric wheel driving shaft are realized, and the accuracy of a transmission gear of a gear box is effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of four-way shuttle technology, and in particular relates to a fork lifting synchronous gearbox mounting structure for a four-way shuttle. Background Technology

[0002] In the field of logistics and warehousing equipment, four-way shuttles, as efficient and flexible automated handling equipment, directly affect the operational efficiency and reliability of the entire warehousing system through their performance and stability. The lifting gearbox, a key component of the four-way shuttle, is responsible for driving the eccentric wheels to lift and lower goods. Its structural design and assembly precision are crucial to the smoothness and accuracy of the shuttle's operation. Traditional four-way shuttle lifting gearboxes present several technical challenges in design and assembly, particularly in the machining and installation of the keyway on the eccentric wheel drive shaft. In existing technologies, after assembly, the installed eccentric wheel drive shaft often requires secondary machining, specifically milling the keyway, to ensure that all subsequent flat keys face upwards, thus meeting the correct installation position and transmission requirements of the eccentric wheels. This machining step not only increases the complexity of the production process but also brings many adverse effects: Increased inspection difficulty: Since the keyway machining is performed after gearbox assembly, it is difficult to effectively detect machining errors or abnormalities in the internal components of the gearbox before machining, such as poor gear meshing or shaft misalignment. These potential problems may affect the performance of the entire gearbox. Difficulty in precision control: During secondary machining, due to the precision limitations of the machining equipment, differences in operator skills, and thermal deformation during machining, deviations in the positional and directional accuracy of the keyway are very likely to occur. Such precision deviations will directly affect the tightness of the fit between the flat key and the drive gear, thus affecting the smooth operation and transmission efficiency of the eccentric wheel. Reduced production efficiency: Secondary machining not only increases the production cycle but also increases production costs. At the same time, the scrap rate that may be generated during machining further reduces the overall production efficiency. Increased operational risks in the later stages: Due to the problem of keyway machining accuracy, the eccentric wheel drive shaft may experience loosening, accelerated wear, or even breakage during operation, seriously threatening the safe operation and service life of the shuttle. In summary, the existing four-way shuttle lifting gearbox has many shortcomings in the machining and installation of the keyway of the eccentric wheel drive shaft. There is an urgent need for a new installation structure to overcome the above defects, improve the assembly accuracy and stability of the gearbox, reduce production costs, and improve the overall performance of the shuttle. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a mounting structure for a fork lifting synchronous gearbox for a four-way shuttle vehicle.

[0004] This utility model is implemented as follows: a forklift synchronous gearbox mounting structure for a four-way shuttle vehicle includes a gearbox, a lifting gear system installed inside the gearbox, the lifting gear system including two drive gears, at least one intermediate gear between the drive gears, and the two drive gears respectively connected to an eccentric wheel drive shaft via keys, the eccentric wheel drive shaft extending out of the gearbox. The key feature is that: a pair of keyways arranged at 180 degrees are provided inside the two drive gears; two flat keys with their centers aligned on a straight line are installed on the same side of the eccentric wheel drive shaft, wherein the key inside the gearbox mates with one keyway inside the drive gear; a positioning reference block is connected to the key on the outside of the gearbox, which makes the two flat keys on the eccentric wheel drive shaft vertically upward, and the positioning reference block is fixedly connected to the outer upright plate of the gearbox by fasteners.

[0005] More preferably, the positioning reference block includes a positioning reference block body, the two sides of which are planar structures. A mounting hole with the same diameter as the outer end of the eccentric wheel drive shaft is provided at the lower part of the positioning reference block body. A keyway that mates with the outer side of the eccentric wheel drive shaft is provided at the upper part of the vertical center of the mounting hole. A through hole is provided above the mounting hole. A threaded hole is provided on the outer side plate of the gearbox corresponding to the connecting hole. A fastening bolt that connects to the threaded hole is installed in the through hole.

[0006] More preferably, there are two through holes, which are symmetrically arranged along the vertical center of the positioning reference block body.

[0007] In a further preferred embodiment, a positioning pin is installed on the positioning reference block body between the two through holes; a positioning hole is provided on the outer side plate of the gearbox corresponding to the positioning pin.

[0008] The advantages and technical effects of this utility model are as follows: The forklift synchronous gearbox mounting structure for the four-way shuttle of this utility model achieves the upward synchronous orientation and precise positioning of the eccentric wheel drive shaft through a unique design, effectively ensuring the accuracy of the gearbox transmission gears. Utilizing the precise fit between the positioning reference block and the key, combined with the reference positioning function of the positioning reference block's positioning pin and fixing screws, the stable installation and precise positioning of the eccentric wheel drive shaft are ensured. Furthermore, this structure facilitates the identification and troubleshooting of any abnormally machined transmission gears during assembly, improving assembly quality and efficiency. After the gearbox is fully assembled, the positioning reference block can be easily removed and reused, reducing production costs, improving the overall technical effect, and providing strong support for the stable operation of the four-way shuttle. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the installation structure of the fork lifting transmission gearbox of this utility model;

[0010] Figure 2 This is a schematic diagram of the fork lifting transmission device;

[0011] Figure 3 This is a schematic diagram of the installation state of the positioning reference block;

[0012] Figure 4 This is a schematic diagram of the internal structure of the gearbox;

[0013] Figure 5 and Figure 6 This is a schematic diagram of the three-dimensional structure of the positioning reference block.

[0014] 1. Gearbox; 1-1. Outer plate of gearbox; 1-10. Threaded hole; 1-11. Positioning hole; 2. Lifting gear system; 2-1. Drive gear; 2-10. Keyway; 2-2. Intermediate gear; 3. Eccentric wheel drive shaft; 3-1. Flat key; 4. Positioning reference block; 4-1. Positioning reference block body; 4-2. Mounting hole; 4-3. Keyway; 4-4. Through hole; 4-5. Fastening bolt; 4-6. Positioning pin. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0016] Please see Figures 1 to 6A lifting synchronous gearbox mounting structure for a four-way shuttle forklift includes a gearbox 1, within which a lifting gear system 2 is installed. The lifting gear system includes two drive gears 2-1, with at least one intermediate gear 2-2 between the drive gears. The two drive gears 2-1 are connected to eccentric wheel drive shafts 3 via keys, with the eccentric wheel drive shafts extending out of the gearbox. Each of the two drive gears has a pair of keyways 2-10 arranged at 180 degrees. This design provides two symmetrical keyways within each drive gear, offering greater selectivity and flexibility for subsequent key installation. Furthermore, this symmetrical design facilitates automatic correction of the eccentric wheel drive shaft's position during assembly, ensuring accurate and stable installation. Two parallel keys 3-1 with their centers aligned are mounted on the same side of the eccentric wheel drive shaft 3. By providing two center-aligned parallel keys on the eccentric wheel drive shaft, the key installation process is simplified, and the tight fit between the keys and the drive gear keyways is ensured, improving the reliability and efficiency of the transmission. Furthermore, this design helps reduce assembly problems caused by keyway machining errors. The key inside the gearbox mates with a keyway inside the drive gear: this feature ensures precise fit between the key inside the gearbox and the keyway of the drive gear, thus achieving a stable connection between the eccentric wheel drive shaft and the drive gear. This design helps improve the transmission accuracy and stability of the gearbox, reducing malfunctions and wear caused by poor fit. A positioning reference block 4, located on the outside of the gearbox, connects to the key, ensuring the two flat keys on the eccentric wheel drive shaft are vertically upward. The design of the positioning reference block ensures that the two flat keys on the eccentric wheel drive shaft remain vertically upward during assembly, which is crucial for ensuring the correct installation position and transmission direction of the eccentric wheel. Simultaneously, the positioning reference block also assists in assembly and corrects the position of the eccentric wheel drive shaft, improving assembly accuracy and efficiency. The positioning reference block is fixedly connected to the outer vertical plate of the gearbox using fasteners. This not only ensures the stability and reliability of the positioning reference block but also makes the entire installation structure more compact and stable. This design helps reduce assembly loosening or deformation caused by vibration or external forces, improving the overall performance and service life of the gearbox. The positioning reference block needs to be removed after the gearbox assembly is completed for use in the next gearbox assembly.

[0017] For further recommendations, please refer to [link / reference]. Figure 5 and Figure 6The positioning reference block 4 includes a positioning reference block body 4-1. The two sides of the positioning reference block body are planar structures. The lower part of the positioning reference block body is provided with a mounting hole 4-2 with the same diameter as the outer end of the eccentric wheel drive shaft. The upper part of the vertical center of the mounting hole is provided with a keyway 4-3 that matches the outer side of the eccentric wheel drive shaft. A through hole 4-4 is provided above the mounting hole. A threaded hole 1-10 is provided on the outer side plate 1-1 of the gearbox corresponding to the connecting hole. A fastening bolt 4-5 connected to the threaded hole is installed in the through hole.

[0018] The positioning reference block is designed with planar sides, facilitating a tight fit with the outer side plate of the gearbox and improving positioning accuracy. The mounting holes at the bottom, with a diameter equal to the outer end of the eccentric wheel drive shaft, and the corresponding keyway, ensure stable installation and precise transmission of the eccentric wheel drive shaft. Simultaneously, the through holes above the mounting holes correspond to the threaded holes on the outer side plate of the gearbox, and the connection via fastening bolts further enhances the stability of the positioning reference block. This technical feature not only improves the convenience and efficiency of assembly but also ensures the stability and reliability of the gearbox transmission system, providing a solid guarantee for the efficient and safe operation of the four-way shuttle.

[0019] Preferably, two through holes are provided, and they are symmetrically arranged along the vertical center of the positioning reference block body. This not only enhances the stability of the reference block installation, but also improves the positioning accuracy of the eccentric wheel drive shaft.

[0020] In a further preferred embodiment, a positioning pin 4-6 is installed on the positioning reference block body between the two through holes; a positioning hole 1-11 is provided on the outer side plate of the gearbox corresponding to the positioning pin. This technical feature significantly improves the accuracy and efficiency of assembly: the cooperation between the positioning pin and the positioning hole enables the positioning reference block and the outer side plate of the gearbox to be quickly and accurately aligned, ensuring the positioning accuracy of the eccentric wheel drive shaft; at the same time, this positioning method simplifies the assembly process and reduces human error.

[0021] In summary, the forklift synchronous gearbox mounting structure for a four-way shuttle vehicle of this invention achieves synchronized upward orientation and precise positioning of the eccentric wheel drive shaft through a unique design, effectively ensuring the accuracy of the gearbox transmission gears. Utilizing the precise fit between the positioning reference block and the key, combined with the reference positioning function of the positioning reference block's positioning pin and fixing screws, stable installation and precise positioning of the eccentric wheel drive shaft are ensured. Furthermore, this structure facilitates the identification and troubleshooting of any abnormally machined transmission gears during assembly, improving assembly quality and efficiency. After the gearbox is fully assembled, the positioning reference block can be easily removed and reused, reducing production costs, enhancing the overall technical effect, and providing strong support for the stable operation of the four-way shuttle vehicle.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fork lifting synchronization gear box mounting structure for a four-way shuttle vehicle, comprising a gear box, a lifting gear train is mounted in the gear box, the lifting gear train comprises two drive gears, at least one stage of intermediate gears is arranged between the two drive gears, eccentric wheel drive shafts are connected to the two drive gears through keys respectively, and the eccentric wheel drive shafts extend out of the gear box, characterized in that: The two driving gears are internally provided with a pair of key grooves arranged at 180 degrees, and the eccentric wheel driving shaft is provided on the same side with two flat keys with a center on a straight line, wherein the key located in the gear box is matched with one key groove in the driving gear; the key located on the outside of the gear box is connected with a positioning reference block which makes the two flat keys on the eccentric wheel driving shaft vertically upward, and the positioning reference block is fixedly connected with the outside vertical plate of the gear box through fasteners.

2. The fork lift synchronization gear box mounting structure for a four-way shuttle vehicle according to claim 1, characterized by: The positioning reference block comprises a positioning reference block body, the two side surfaces of the positioning reference block body are in a plane structure, a mounting hole with the same diameter as the outer end of the eccentric wheel driving shaft is arranged at the lower part of the positioning reference block body, a key groove matched with the key on the outside of the eccentric wheel driving shaft is arranged vertically at the upper part of the mounting hole, a through hole is arranged above the mounting hole, a threaded hole is arranged on the outside plate of the gear box corresponding to the connecting hole, and a fastening bolt connected with the threaded hole is fitted in the through hole.

3. The fork lift synchronization gear box mounting structure for a four-way shuttle vehicle according to claim 2, characterized by: The two through holes are symmetrically arranged along the vertical center of the positioning reference block body.

4. The fork lift synchronization gear box mounting structure for a four-way shuttle vehicle according to claim 1, characterized by: A positioning pin is mounted on the positioning reference block body between the two through holes; a positioning hole is arranged on the outside plate of the gear box corresponding to the positioning pin.

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