Forklift tube layout

Abstract

The utility model relates to the technical field of oil pipe layout structure, and specifically disclose a forklift oil pipe layout structure, including solenoid valve, solenoid valve is installed between portal and cargo fork frame, this oil supply unit is connected with solenoid valve through two first oil pipes that are around the portal, wherein, one is oil inlet pipe, and the other is oil return pipe, can deliver hydraulic oil to solenoid valve through oil inlet pipe, then the oil return at solenoid valve returns to the oil supply unit through oil return pipe, and the transmission of hydraulic oil is completed, and solenoid valve is connected with the inclined cylinder through two second oil pipes, and is connected with the side shift cylinder through two third oil pipes, after the transmission of hydraulic oil to solenoid valve, solenoid valve controls different opening to open or close, and then controls the inclined cylinder or side shift cylinder to act, then only two first oil pipes need to cross the portal, can greatly reduce the number of first oil pipe, can effectively improve the portal's aesthetic property, reduce the risk of winding between first oil pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of forklifts, and specifically to a forklift oil pipe layout structure. Background Technology

[0002] Forklifts, as core equipment in logistics handling, rely on hydraulic cylinders for lifting, tilting, and lateral movement of their forks. The hydraulic lines, as crucial power transmission channels, directly impact system efficiency, lifespan, and the overall aesthetics of the forklift. However, existing forklift hydraulic line layouts suffer from the following prominent problems:

[0003] 1. Traditional forklifts require a large number of hydraulic lines, especially for the hydraulic line connections on the front and rear sides of the mast. This results in multiple hydraulic lines hanging on the mast, obstructing the view and affecting the overall aesthetics. Taking the tilt cylinder and side shift hydraulic line of the forks as an example, each cylinder requires two hydraulic lines, and there are usually two tilt cylinders. If the hydraulic supply unit supplies hydraulics to three cylinders, it requires six hydraulic lines. Moreover, all six hydraulic lines need to be connected to the mast, resulting in too many hydraulic lines on the mast. This is not a problem, but it does obstruct the view.

[0004] 2. The existing hydraulic hose layout of forklifts is chaotic. With the popularization of multi-functional attachments for forklifts, traditional single-path hydraulic hoses are difficult to adapt to the needs of multi-cylinder coordination. The existing layout often results in hydraulic hoses crossing and tangling due to space constraints, increasing the risk of interference. Utility Model Content

[0005] This utility model addresses the aforementioned problems and aims to provide a forklift hydraulic pipe layout structure that reduces the number of hydraulic pipes, improves the aesthetics of the mast, and, through a reasonable layout, enables the coordinated operation of multiple hydraulic cylinders while avoiding the cross-entanglement of hydraulic pipes.

[0006] To achieve the above objectives, this utility model provides a forklift hydraulic pipe layout structure. The forklift includes a body assembly, a mast assembly, and a hydraulic assembly. The body assembly includes a body and a control compartment located at the rear of the body. The mast assembly includes a mast located at the front of the body, a fork carriage tiltably mounted at the front of the mast, and forks movably mounted on the fork carriage. The hydraulic assembly includes an oil supply unit, a tilting cylinder for driving the fork carriage to tilt, and a lateral movement cylinder for driving the forks to move laterally. The oil supply unit is located in the control compartment. The tilting cylinder is fixed to the bottom of the mast, and its output end is connected to the bottom of the fork carriage. The lateral movement cylinder is fixed to the fork carriage. The hydraulic pipe layout mechanism includes:

[0007] A solenoid valve is installed between the mast and the fork carriage. The oil supply unit is connected to the solenoid valve through two first oil pipes wound around the mast. The solenoid valve is connected to the tilting cylinder through two second oil pipes and to the side-shifting cylinder through two third oil pipes.

[0008] According to the forklift oil pipe layout structure described above, the oil supply unit includes a main oil cylinder and a main valve. The two first oil ports of the main valve are connected to the main oil cylinder, and the two second oil ports of the main valve are connected to the two first oil ports of the solenoid valve through two first oil pipes.

[0009] According to the forklift oil pipe layout structure described above, a first connector seat, a second connector seat, and a third connector seat are provided between the main valve and the solenoid valve. The first oil pipe is sequentially connected to the main valve, the first connector seat, the second connector seat, the third connector seat, and the solenoid valve.

[0010] According to the forklift oil pipe layout structure described above, the first oil pipe includes a first pipe, a second pipe, a third pipe, and a fourth pipe. The two second oil ports of the main valve are respectively connected to the two first oil ports of the first connector through the two first pipes. The two second oil ports of the first connector are respectively connected to the two first oil ports of the second connector through the two second pipes. The two second oil ports of the second connector are respectively connected to the two first oil ports of the third connector through the two third pipes. The two second oil ports of the third connector are respectively connected to the two first oil ports of the solenoid valve through the two fourth pipes.

[0011] According to the forklift oil pipe layout structure described above, the mast is provided with a first guide wheel, the first guide wheel is arranged horizontally on one side of the top of the mast, the first connector seat and the second connector seat are both located on the rear side of the mast, the first connector seat is located in the middle area of ​​the mast, the second connector seat is located at the bottom of the mast, and the second pipe is wound around the first guide wheel.

[0012] According to the forklift oil pipe layout structure described above, the mast is provided with a second guide wheel, the second guide wheel is arranged horizontally in the middle of the mast, the third connector seat is located on the front side of the mast and at the bottom of the mast, and the third pipe is wound around the second guide wheel.

[0013] According to the above-described forklift hydraulic pipe layout structure, the mast includes a middle mast and an outer mast. The middle mast is vertically and flexibly disposed inside the outer mast. The hydraulic assembly also includes side lifting cylinders. Two side lifting cylinders are symmetrically arranged on both sides of the outer mast and are used to drive the middle mast to perform lifting actions. The two third oil ports of the first connector seat are connected to the two side lifting cylinders through a first connecting pipe.

[0014] According to the forklift hydraulic pipe layout structure described above, the mast also includes an inner mast, which is vertically and flexibly disposed inside the middle mast. The hydraulic assembly also includes a middle lifting cylinder, which is located in the middle of the inner mast and is used to drive the inner mast to perform lifting actions. The third oil port of the second connector is connected to the middle lifting cylinder.

[0015] According to the forklift hydraulic pipe layout structure described above, there are two tilting cylinders, which are symmetrically arranged on the mast, and a second connecting pipe is provided between the two tilting cylinders. The two second oil ports of the solenoid valve are respectively connected to the second connecting pipe through two second oil pipes.

[0016] According to the forklift oil pipe layout structure described above, the first end and the second end of the second connecting pipe are each provided with two oil ports, and are respectively connected to two oil ports on one of the tilting cylinders through the two oil ports.

[0017] This utility model has the following beneficial effects:

[0018] 1. By setting up solenoid valves, the number of oil pipes between the oil supply unit and the solenoid valves can be reduced, thereby reducing the number of oil pipes wound around the gantry, improving the overall aesthetics of the gantry, reducing the obstruction effect on the gantry, and reducing the risk of mutual entanglement due to the reduced number of oil pipes.

[0019] 2. The proper routing of the oil pipes can be achieved through the cooperation of the first connector, the second connector, and the third connector, preventing the oil pipes from becoming tangled.

[0020] 3. The connector seat can be used to achieve the coordinated action of multiple oil cylinders and avoid the oil pipes between multiple oil cylinders from getting tangled. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the forklift in the embodiment;

[0022] Figure 2 This is a schematic diagram of the internal structure of the control compartment in an embodiment;

[0023] Figure 3 This is a schematic diagram of the assembly of the hydraulic components and solenoid valve in an embodiment.

[0024] In the picture:

[0025] 100. Body components; 110. Body; 120. Control compartment;

[0026] 200. Mast assembly; 210. Mast; 211. First guide wheel; 212. Second guide wheel; 213. Middle mast; 214. Outer mast; 215. Inner mast; 220. Fork carriage; 230. Forks;

[0027] 300. Hydraulic assembly; 310. Oil supply unit; 311. Main cylinder; 312. Main valve; 320. Tilting cylinder; 321. Second connecting pipe; 330. Side-shifting cylinder; 340. First connector seat; 341. First connecting pipe; 350. Second connector seat; 360. Third connector seat; 370. Side lifting cylinder; 380. Center lifting cylinder;

[0028] 400, Solenoid valve; 410, First oil pipe; 411, Second pipe; 412, Third pipe; 413, Fourth pipe; 420, Second oil pipe; 430, Third oil pipe. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1-3 As shown, a forklift oil pipe layout structure includes a solenoid valve 400. The solenoid valve 400 can reduce the number of oil pipes required, reduce the number of oil pipes wound around the mast 210, improve the overall aesthetics of the mast 210, and reduce the obstruction of the mast 210.

[0031] The forklift includes a body assembly 100, a mast assembly 200, and a hydraulic assembly 300. The body assembly 100 includes a body 110 and a control compartment 120 located at the rear of the body 110. The mast assembly 200 includes a mast 210 located at the front of the body 110, a fork carriage 220 tiltably mounted at the front of the mast 210, and forks 230 movably mounted on the fork carriage 220. Tilting the fork carriage 220 can tilt the forks 230, preventing goods from falling off the forks 230. The forks 230 can move laterally relative to the fork carriage 220, increasing their range of motion and lifting capacity. The hydraulic assembly 300 includes an oil supply unit 310, a tilting cylinder 320 for driving the fork carriage 220 to tilt, and a lateral movement cylinder 330 for driving the forks 230 to move laterally. The oil supply unit 310 is located in the control compartment 100. Within 20, hydraulic oil is supplied to the tilt cylinder 320 and the lateral displacement cylinder 330. The tilt cylinder 320 is fixed to the bottom of the mast 210, and its output end is connected to the bottom of the fork carriage 220. When the output end of the tilt cylinder 320 extends, it can drive the bottom end of the fork carriage 220 to move forward. The upper end of the fork carriage 220 is hinged to the mast 210. When the bottom end of the fork carriage 220 moves, the fork carriage 2... The entire fork carriage 220 can rotate around the upper end of the fork carriage 220, thereby realizing the rotation of the fork carriage 220 and driving the forks 230 to rotate, so that the front end of the forks 230 is raised to prevent the goods on the forks 230 from falling off easily. The side-shifting cylinder 330 is fixed on the fork carriage 220, and its output end is connected to the forks 230. When the forklift moves to the preset area, the side-shifting cylinder 330 can drive the forks 230 to move laterally to pick up goods at different positions.

[0032] It is known that each hydraulic cylinder has at least one oil inlet and one oil outlet. Therefore, each hydraulic cylinder requires at least two oil pipes for connection. Moreover, the tilting hydraulic cylinder 320 and the lateral shifting hydraulic cylinder 330 need to move synchronously with the lifting and lowering of the gantry 210 so that they can tilt and move laterally at any height. Therefore, the oil pipes also need to be able to move synchronously. Usually, the oil pipes are arranged on the inner gantry 215210 so that they can move together with the lifting and lowering. When each hydraulic cylinder requires two oil pipes, in the prior art, the oil supply unit 310 needs to lead out multiple oil pipes, and multiple oil pipes need to be wrapped around the gantry 210. The large number of oil pipes themselves can easily cause the oil pipes to entangle with each other. Furthermore, multiple oil pipes wrapped around the gantry 210 result in a large area of ​​the gantry 210 being occupied by oil pipes, which is aesthetically unappealing and will obstruct the view.

[0033] Unlike existing technologies, this embodiment employs a solenoid valve 400, which allows for secondary oil distribution, reducing the need for multiple oil pipes. Therefore, the solenoid valve 400 is installed between the mast 210 and the fork carriage 220. The oil supply unit 310 is connected to the solenoid valve 400 via two first oil pipes 410 wound around the mast 210. One is an inlet pipe, and the other is a return pipe. Hydraulic oil is delivered to the solenoid valve 400 via the inlet pipe, and the return oil from the solenoid valve 400 returns to the oil supply unit 310 via the return pipe. The hydraulic oil is transmitted through a solenoid valve 400, which is connected to the tilting cylinder 320 via two second oil pipes 420 and to the side-shifting cylinder 330 via two third oil pipes 430. After the hydraulic oil is transmitted to the solenoid valve 400, the solenoid valve 400 controls different openings to open or close, thereby controlling the tilting cylinder 320 or the side-shifting cylinder 330 to perform actions. Only two first oil pipes 410 need to cross the gantry 210, which can greatly reduce the number of first oil pipes 410, effectively improve the aesthetics of the gantry 210, and reduce the risk of the first oil pipes 410 getting tangled together.

[0034] Furthermore, in this embodiment, there are two tilting cylinders 320, which are symmetrically arranged on the gantry 210. A second connecting pipe 321 is provided between the two tilting cylinders 320. The two second oil ports of the solenoid valve 400 are respectively connected to the second connecting pipe 321 through two second oil pipes 420. By using one second connecting pipe 321, oil can be supplied to the two tilting cylinders 320 at the same time by two second oil pipes 420, which can save two second oil pipes 420.

[0035] Furthermore, two oil ports are provided at both the first and second ends of the second connecting pipe 321, and are respectively connected to two oil ports on the tilting cylinder 320. That is, a total of four oil ports are provided on the second connecting pipe 321, and synchronous oil supply to the two tilting cylinders 320 can be achieved through the four oil ports.

[0036] Furthermore, the oil supply unit 310 includes a main oil cylinder 311 and a main valve 312. The two first oil ports of the main valve 312 are connected to the main oil cylinder 311, and the two second oil ports of the main valve 312 are connected to the two first oil ports of the solenoid valve 400 through two first oil pipes 410. The two first oil ports and the two second oil ports of the main valve 312 are each an inlet and an outlet. This naming is only to distinguish the connection relationship and also indicates that the main valve 312 has at least four oil ports. The oil ports of other components are also named in this way. The main oil cylinder 311 supplies hydraulic oil to the main valve 312, and the main valve 312 then supplies oil to the solenoid valve 400, realizing the dual distribution of oil.

[0037] Furthermore, a first connector 340, a second connector 350, and a third connector 360 are provided between the main valve 312 and the solenoid valve 400. The first oil pipe 410 is sequentially connected to the main valve 312, the first connector 340, the second connector 350, the third connector 360, and the solenoid valve 400. The first connector 340, the second connector 350, and the third connector 360 can be used to fix and position the first oil pipe 410, ensuring the rationality of the wiring, avoiding interference between the first oil pipe 410 and other components, and preventing the two first oil pipes 410 from tangling with each other. At the same time, multiple connectors can be used to perform reasonable oil redistribution.

[0038] Furthermore, the first oil pipe 410 includes a first pipe, a second pipe 411, a third pipe 412, and a fourth pipe 413. The two second oil ports of the main valve 312 are respectively connected to the two first oil ports of the first connector 340 via two first pipes. The two second oil ports of the first connector 340 are respectively connected to the two first oil ports of the second connector 350 via two second pipes 411. The two second oil ports of the second connector 350 are respectively connected to the two first oil ports of the third connector 360 via two third pipes 412. The two second oil ports of the third connector 360 are respectively connected to the solenoid valve 400 via two fourth pipes 413. The two first oil ports are connected. The hydraulic oil delivered by the main valve 312 can be delivered to the solenoid valve 400 through the first connector 340, the second connector 350, and the third connector 360 in sequence. The hydraulic oil on the solenoid valve 400 can be delivered to the main valve 312 through the third connector 360, the second connector 350, and the first connector 340 in sequence, and then delivered to the main cylinder 311 by the main valve 312. Dividing the first oil pipe 410 into multiple pipes can greatly improve its installation convenience and facilitate maintenance. If a section of the pipe is damaged, only that section of the pipe needs to be replaced, avoiding the need to replace the entire first oil pipe 410 and saving costs.

[0039] Furthermore, in this embodiment, the first connector seat 340 and the second connector seat 350 also serve as a diversion function. The gantry 210 includes a middle gantry 213210 and an outer gantry 214210. The middle gantry 213210 is vertically and vertically mounted inside the outer gantry 214210. The hydraulic assembly 300 also includes side lifting cylinders 370. The two side lifting cylinders 370 are symmetrically arranged on both sides of the outer gantry 214210 and are used to drive the middle gantry 213210 to perform lifting actions. The two third oil ports of the first connector seat 340 are connected to the two side lifting cylinders 370 through the first connecting pipe 341. When the main valve 312 delivers hydraulic oil to the first connector seat 340, the first connector seat 340 can deliver a portion of the oil to the two side lifting cylinders 370 so that they work synchronously.

[0040] The gantry 210 includes an inner gantry 215210, which is vertically adjustable inside the middle gantry 213210. The hydraulic assembly 300 also includes a middle lifting cylinder 380, which is located in the middle of the inner gantry 215210 and is used to drive the inner gantry 215210 to perform lifting actions. The third oil port of the second connector 350 is connected to the middle lifting cylinder 380. When the first connector 340 delivers hydraulic oil to the second connector 350, the second connector 350 can deliver a portion of the oil to the middle lifting cylinder 380 to drive the inner gantry 215210 to perform lifting actions. Of course, in order to prevent the side lifting cylinder 370 and the middle lifting cylinder 380 from moving arbitrarily, switches can be installed at the corresponding oil pipes or oil ports to achieve precise control.

[0041] Furthermore, a first guide wheel 211 is provided on the gantry 210. The first guide wheel 211 is arranged horizontally on one side of the top of the gantry 210. The first connector seat 340 and the second connector seat 350 are both located on the rear side of the gantry 210. The first connector seat 340 is located in the middle area of ​​the gantry 210, and the second connector seat 350 is located at the bottom of the gantry 210. The second pipe 411 is wound around the first guide wheel 211. The first guide wheel 211 is used to provide support for the second pipe 411 to ensure its smooth laying.

[0042] Furthermore, a second guide wheel 212 is provided on the gantry 210. The second guide wheel 212 is arranged horizontally in the middle of the gantry 210. The third connector seat 360 is located on the front side of the gantry 210 and at the bottom of the gantry 210. The third pipe 412 is wrapped around the second guide wheel 212. The second guide wheel 212 is used to provide support for the third pipe 412 and allows the third pipe 412 to cross the gantry 210.

[0043] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0045] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A forklift hydraulic pipe layout structure, the forklift including a body assembly, a mast assembly, and a hydraulic assembly, the body assembly including a body and a control compartment located at the rear of the body, the mast assembly including a mast located at the front of the body, a fork carriage tiltably mounted at the front of the mast, and forks movably mounted on the fork carriage, the hydraulic assembly including an oil supply unit, a tilting cylinder for driving the fork carriage to tilt, and a lateral movement cylinder for driving the forks to move laterally, the oil supply unit being located within the control compartment, the tilting cylinder being fixed to the bottom of the mast, and the output end of the tilting cylinder being connected to the bottom of the fork carriage, the lateral movement cylinder being fixed to the fork carriage, characterized in that, The tubing layout mechanism includes: A solenoid valve is installed between the mast and the fork carriage. The oil supply unit is connected to the solenoid valve through two first oil pipes wound around the mast. The solenoid valve is connected to the tilting cylinder through two second oil pipes and to the side-shifting cylinder through two third oil pipes.

2. The forklift hydraulic pipe layout structure according to claim 1, characterized in that, The oil supply unit includes a main oil cylinder and a main valve. The two first oil ports of the main valve are connected to the main oil cylinder, and the two second oil ports of the main valve are connected to the two first oil ports of the solenoid valve through two first oil pipes.

3. The forklift hydraulic pipe layout structure according to claim 2, characterized in that, A first connector, a second connector, and a third connector are provided between the main valve and the solenoid valve. The first oil pipe is sequentially connected to the main valve, the first connector, the second connector, the third connector, and the solenoid valve.

4. The forklift hydraulic pipe layout structure according to claim 3, characterized in that, The first oil pipe includes a first pipe, a second pipe, a third pipe, and a fourth pipe. The two second oil ports of the main valve are respectively connected to the two first oil ports of the first connector via the two first pipes. The two second oil ports of the first connector are respectively connected to the two first oil ports of the second connector via the two second pipes. The two second oil ports of the second connector are respectively connected to the two first oil ports of the third connector via the two third pipes. The two second oil ports of the third connector are respectively connected to the two first oil ports of the solenoid valve via the two fourth pipes.

5. The forklift hydraulic pipe layout structure according to claim 4, characterized in that, The gantry is provided with a first guide wheel, which is arranged horizontally on one side of the top of the gantry. The first connector seat and the second connector seat are both located on the rear side of the gantry. The first connector seat is located in the middle area of ​​the gantry, and the second connector seat is located at the bottom of the gantry. The second pipe is wound around the first guide wheel.

6. The forklift hydraulic pipe layout structure according to claim 4, characterized in that, The gantry is provided with a second guide wheel, which is arranged horizontally in the middle of the gantry. The third connector seat is located on the front side of the gantry and at the bottom of the gantry. The third pipe is wound around the second guide wheel.

7. The forklift hydraulic pipe layout structure according to claim 4, characterized in that, The gantry includes a middle gantry and an outer gantry. The middle gantry is vertically configurable on the inner side of the outer gantry. The hydraulic assembly also includes two side lifting cylinders. Two side lifting cylinders are symmetrically arranged on both sides of the outer gantry and are used to drive the middle gantry to perform lifting actions. The two third oil ports of the first connector seat are connected to the two side lifting cylinders through a first connecting pipe.

8. The forklift hydraulic pipe layout structure according to claim 7, characterized in that, The gantry also includes an inner gantry, which is vertically and flexibly disposed inside the middle gantry. The hydraulic assembly also includes a middle lifting cylinder, which is located in the middle of the inner gantry and is used to drive the inner gantry to perform lifting and lowering actions. The third oil port of the second connector is connected to the middle lifting cylinder.

9. The forklift hydraulic pipe layout structure according to claim 1, characterized in that, Two tilting cylinders are provided, and the two tilting cylinders are symmetrically arranged on the gantry. A second connecting pipe is provided between the two tilting cylinders. The two second oil ports of the solenoid valve are respectively connected to the second connecting pipe through two second oil pipes.

10. A forklift hydraulic pipe layout structure according to claim 9, characterized in that, The second connecting pipe has two oil ports on both its first and second ends, and is connected to two oil ports on one of the tilting cylinders through the two oil ports respectively.

Images