Forklift portal oil way arrangement structure

Abstract

The utility model relates to a forklift portal oil way arrangement structure which comprises a lifting oil cylinder, a connecting plate, a chain wheel shaft, a pulley and a hydraulic pipe. The pulley is arranged at the bottom of the chain wheel shaft through a connecting plate, the hydraulic pipe is wound on the outer side of the pulley, and the bottom vertical part, wound around the pulley, of the hydraulic pipe is fixedly arranged on the outer side wall of the lifting oil cylinder; the forklift truck hydraulic oil way rubber pipe is simple in installation mode, materials are few, the sight shielding area of the forklift truck additional hydraulic oil way rubber pipe is reduced, the visual field of a driver is increased, the cargo carrying efficiency and accuracy are improved, and cargoes are prevented from being damaged. According to the whole oil way arrangement mode, standard parts are adopted to be fixed to the door frame, and oil way installation and later maintenance and disassembly are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of forklift hydraulic system technology, and in particular to a forklift mast oil circuit layout structure. Background Technology

[0002] Forklifts are industrial vehicles used for handling, stacking, and short-distance transport of goods, widely used in logistics warehousing, ports, manufacturing, and construction sites. Their core function is to achieve efficient and safe loading, unloading, and storage of goods through the lifting and tilting of the forks. With the widespread use of forklifts, the requirements for them have increased due to the different types of goods and various working conditions. For example, forklifts often require adjustable forks or side-shifting capabilities, or various attachments to be added to standard forklifts to meet special working conditions. To meet these special needs, forklifts require additional hydraulic circuits beyond the standard two-valve configuration, typically resulting in a three- or four-valve configuration. When a forklift requires a hydraulic circuit with three or more valves, the conventional and simple method is to arrange the hydraulic hoses in the middle of the mast using pulleys. This arrangement has a certain impact on the mast's field of vision, especially with a three-stage fully free mast. Because the mast also has a front lifting cylinder, the arrangement of the hydraulic circuit makes the line of sight inside the mast very narrow. During operation, the operator's vision is obstructed, making it impossible to quickly complete the handling of goods and affecting work efficiency. Utility Model Content

[0003] To address the issue that existing hydraulic circuit layouts affect the field of vision in the middle of the forklift mast when a forklift requires a triple valve or higher hydraulic circuit, a new hydraulic circuit layout structure for the forklift mast is proposed.

[0004] The technical solution of this utility model is: a hydraulic circuit layout structure for a forklift mast, including a lifting cylinder, a connecting plate, a sprocket shaft, a pulley, and a hydraulic pipe; the pulley is set at the bottom of the sprocket shaft through the connecting plate, the hydraulic pipe is wrapped around the outside of the pulley, and the bottom vertical part of the hydraulic pipe after passing around the pulley is fixedly set on the outer side wall of the lifting cylinder.

[0005] Preferably, the hydraulic hose is a hydraulic hose.

[0006] Preferably, the hydraulic pipe wound around the pulley is provided with a baffle on the outside to prevent the hydraulic pipe from falling off the pulley during the lifting and lowering of the gantry.

[0007] Preferably, the side of the baffle closest to the hydraulic pipe has an arc-shaped edge or a guide slope.

[0008] Preferably, the connecting plate is connected to the pulley and sprocket shaft by bolts.

[0009] Preferably, the baffle is fixed to the connecting plate by connecting bolts connecting the connecting plate and the pulley.

[0010] Preferably, a limiting member is provided on the forklift mast near the bottom of the pulley and the hydraulic pipe, and the hydraulic pipe is disposed within the limiting member.

[0011] Preferably, the limiting member is a pipe clamp.

[0012] Preferably, the hydraulic pipe is fixedly mounted on the outer wall of the lifting cylinder by a fixing member.

[0013] Preferably, the fastener is a cable tie.

[0014] The beneficial effects of this utility model are as follows: The installation method is simple, requires fewer materials, reduces the obstruction of the driver's view by the additional hydraulic hoses on the forklift, increases the driver's field of vision, improves the efficiency and accuracy of cargo handling, and prevents damage to goods. The entire hydraulic circuit layout uses standard parts fixed to the mast, facilitating the installation of the hydraulic circuit and subsequent maintenance and disassembly. Attached Figure Description

[0015] Figure 1 This is a front view of the oil circuit layout structure of the forklift mast of this utility model;

[0016] Figure 2 This is a perspective view of the hydraulic circuit layout structure of the forklift mast of this utility model.

[0017] The component names corresponding to the various reference numerals in the diagram are as follows:

[0018] 1. Lifting cylinder; 2. Connecting plate; 3. Sprocket shaft; 4. Pulley; 5. Hydraulic pipe; 51. Limiting component; 52. Baffle; 53. Fixing component. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0020] This embodiment uses a 7T forklift as an example for illustration. (Refer to...) Figure 1 , 2As shown in the figure, this application discloses a hydraulic circuit layout structure for a forklift mast, including a lifting cylinder 1, a connecting plate 2, a sprocket shaft 3, a pulley 4, and a hydraulic pipe 5. The pulley 4 is located below the bottom of the sprocket shaft 3 and is fixed to the bottom of the sprocket shaft 3 via the connecting plate 2. The hydraulic pipe 5 can be a hydraulic hose, which is wound around the outside of the pulley 4. The bottom vertical portion of the hydraulic pipe 5 after passing around the pulley 4 is fixed to the outer wall of the lifting cylinder 1. The two ends of the hydraulic pipe 5 are respectively connected to relevant pipelines on the fork carriage and the multi-way valve of the forklift. The hydraulic pipe 5 of the entire triple or quadruple valve is hidden behind the chain of the forklift mast, reducing the area obstructed by the hydraulic circuit and improving the forklift driver's visibility.

[0021] The connecting plate 2 is connected to the pulley 4 and the sprocket shaft 3 by bolts.

[0022] A baffle 52 is provided on the outside of the hydraulic pipe 5 that is wound around the pulley 4. The baffle 52 restricts the lateral displacement of the hydraulic pipe 5 through a physical barrier, ensuring that it slides along a predetermined path in the pulley groove, and preventing the hydraulic pipe 5 from falling out of the pulley 4 during the lifting and lowering of the gantry.

[0023] The side of the baffle 52 closest to the hydraulic pipe 5 has an arc-shaped edge or a guide slope. When the gantry is raised or lowered, the hydraulic pipe 5 may deviate due to inertia or external force. The arc-shaped edge or guide slope of the baffle 52 can guide the hose to return to its original position.

[0024] The baffle 52 is fixed to the connecting plate 2 and the pulley 4 by the connecting bolts.

[0025] A limiting member 51 is provided on the forklift mast near the bottom of the pulley 4 and the hydraulic pipe 5. The hydraulic pipe 5 is placed inside the limiting member 51. The limiting member 51 can be a pipe clamp. The limiting member 51 is used to fix the hydraulic pipe 5 on the forklift mast and limit its movement.

[0026] The hydraulic pipe 5 is fixedly installed on the outer wall of the lifting cylinder 1 by a fastener 53, which can be a cable tie.

[0027] The working principle and beneficial effects are as follows: The hydraulic pipes 5 of the entire triple or quadruple valve are hidden behind the chain of the forklift mast, reducing the area of ​​oil circuit obstruction and improving the visibility of the forklift driver.

[0028] This utility model features a simple installation method, requires fewer materials, reduces the obstruction of the driver's view by additional hydraulic hoses on the forklift, increases the driver's field of vision, improves the efficiency and accuracy of cargo handling, and prevents damage to goods. The entire hydraulic circuit layout uses standard parts fixed to the mast, facilitating installation and subsequent maintenance and disassembly.

[0029] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A forklift mast hydraulic circuit layout structure, characterized in that, It includes a lifting cylinder (1), a connecting plate (2), a sprocket shaft (3), a pulley (4), and a hydraulic pipe (5); the pulley (4) is set at the bottom of the sprocket shaft (3) through the connecting plate (2), the hydraulic pipe (5) is wrapped around the outside of the pulley (4), and the bottom vertical part of the hydraulic pipe (5) after passing around the pulley (4) is fixed on the outer wall of the lifting cylinder (1).

2. The forklift mast hydraulic circuit layout structure according to claim 1, characterized in that, The hydraulic pipe (5) is a hydraulic hose.

3. The forklift mast hydraulic circuit layout structure according to claim 1, characterized in that, The hydraulic pipe (5) wound around the pulley (4) is provided with a baffle (52) on the outside to prevent the hydraulic pipe (5) from falling out of the pulley (4) during the lifting and lowering of the gantry.

4. The forklift mast oil circuit layout structure according to claim 3, characterized in that, The side of the baffle (52) closest to the hydraulic pipe (5) has an arc-shaped edge or a guide slope.

5. The forklift mast oil circuit layout structure according to claim 3, characterized in that, The connecting plate (2) is connected to the pulley (4) and the sprocket shaft (3) by bolts.

6. The forklift mast hydraulic circuit layout structure according to claim 5, characterized in that, The baffle (52) is fixed to the connecting plate (2) and the pulley (4) by the connecting bolts.

7. The forklift mast hydraulic circuit layout structure according to claim 1, characterized in that, The bottom of the pulley (4) is provided with a limiting member (51) on the forklift mast near the hydraulic pipe (5), and the hydraulic pipe (5) is located inside the limiting member (51).

8. The forklift mast hydraulic circuit layout structure according to claim 7, characterized in that, The limiting component (51) is a pipe clamp.

9. The forklift mast oil circuit layout structure according to claim 1, characterized in that, The hydraulic pipe (5) is fixedly mounted on the outer wall of the lifting cylinder (1) by a fastener (53).

10. The forklift mast oil circuit layout structure according to claim 9, characterized in that, The fastener (53) is a cable tie.

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