Hydraulic line for a palm car

Abstract

The hydraulic pipeline of the palm car comprises an oil tank, an oil filter, a gear pump, a multi-way valve, a connecting pipe, a tee joint, two branch arm oil cylinders, a grab bucket oil cylinder, a hydraulic motor, a lifting oil cylinder and a car unloading oil cylinder. The multi-way valve has at least 13 oil ports. An oil port I is communicated with another oil port of the oil tank through the connecting pipe. An oil port II is communicated with another oil port of the gear pump through the connecting pipe. Oil ports III and IV are respectively communicated with the lifting oil cylinder and the car unloading oil cylinder through the connecting pipe, and respectively constitute a lifting hydraulic circuit and a car unloading hydraulic circuit. The hydraulic motor, the various hydraulic oil cylinders and the oil tank are communicated through the multi-way valve and the connecting pipe, and independent hydraulic operation circuits are formed. The multi-way valve is arranged at the right side of the middle axis of the front end of the palm car, the connection of the matched pipeline is facilitated, the pipeline is far away from the engine assembly and the exhaust system, the pipeline is prevented from being rubbed with the rotating parts, and the smooth operation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of palm oil vehicle technology, specifically to a hydraulic pipeline for a palm oil vehicle. Background Technology

[0002] Palm fruit picking carts are used to pick up and transport palm fruits. They generally use hydraulic control to move the picking components, which places high demands on the hydraulic pipes. The installation position of the power system, the rotation of the vehicle body, and the movement of the picking arm can often affect and interfere with the control lines. For example, if the hydraulic pipes are near heat sources, such as engine components and the exhaust system; friction with rotating or slewing parts can cause oil leaks or damage to the pipes; and an unreasonable design of the hydraulic pipe circuit can easily cause interference, which can also compress the hydraulic pipe diameter, affecting the performance and efficiency of the entire machine, or even causing it to stop working.

[0003] Therefore, this utility model provides a hydraulic pipeline for a palm oil truck, which fully considers the rationality of the placement of each pipe circuit to ensure smooth operation. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of this utility model is to provide a hydraulic pipeline for a palm oil truck, solving the problem that unreasonable placement of hydraulic pipe components and unreasonable hydraulic pipeline circuit design affect operation.

[0005] This utility model is achieved through the following technical solution:

[0006] A hydraulic system for a palm oil truck includes an oil tank, an oil filter, a gear pump, a multi-way valve, connecting pipes, a tee, two outrigger cylinders, a grab cylinder, a hydraulic motor, a lifting cylinder, and a unloading cylinder. The oil tank and oil filter, and the gear pump and oil filter, are connected via their respective ports and connecting pipes. The multi-way valve has at least 13 ports; port I is connected to another port in the oil tank via a connecting pipe; port II is connected to another port in the gear pump via a connecting pipe; ports III and IV are connected to the lifting cylinder and the unloading cylinder via connecting pipes, respectively, forming the lifting hydraulic circuit and the unloading hydraulic circuit; ports V, VI, VII, and VIII are connected to the rod chambers of the two outrigger cylinders via connecting pipes. The rodless chamber forms the hydraulic circuit for the outrigger; its ports IX and X are connected to the rod-side and rodless chambers of the grab cylinder respectively via connecting pipes, forming the grabbing hydraulic circuit; its port XI is connected to the hydraulic motor via connecting pipes, forming the rotary hydraulic circuit; its ports XII and XIII are connected to the two ports of the tee respectively via connecting pipes, and the other port of the tee is connected to the other port of the oil filter; the shaft of the hydraulic motor is mounted on the slewing bearing; the two outrigger cylinders and the grab cylinder are fixed to the picking outrigger; the oil tank, oil filter, gear pump, lifting cylinder, and unloading cylinder are all mounted on the vehicle body; the multi-way valve is located on the right side of the front centerline of the palm truck; and the gear pump is located on the left side of the front centerline.

[0007] Preferably, both the lifting cylinder and the unloading cylinder are equipped with a one-way damping valve at the connection between their cylinder inlet and the connecting pipe.

[0008] Preferably, the side of the picking arm is provided with several restraint frames, and the connecting pipes in the hydraulic circuit of the arm and the hydraulic circuit of the gripping are laid through the restraint frames.

[0009] Preferably, when the gear pump and the oil filter are connected by a connecting pipe, the gear pump is provided with two oil inlets and the oil filter is provided with two corresponding oil ports.

[0010] Preferably, the connecting pipe and the oil port are connected by a 24° conical sealing structure.

[0011] Preferably, the connecting pipe is made of rubber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model connects the hydraulic motor, each hydraulic cylinder and oil tank through a multi-way valve and connecting pipes to form their own independent hydraulic operation circuits. The multi-way valve is located on the right side of the center axis at the front of the palm truck, which facilitates the connection of the matching pipelines and keeps it away from heat sources. The gear pump is located on the left side of the front of the center axis and is used for the flow output of each working pipeline. The restraint frame is used to organize the hydraulic circuit of the outrigger and grab the connecting pipes in the hydraulic circuit. The pipes are placed in an orderly manner, and the pipelines are prevented from rubbing against the rotating and slewing parts to ensure smooth operation.

[0014] 2. This utility model uses a multi-way valve and a gear pump for hydraulic control, which ensures stable operation. Both the lifting cylinder and the unloading cylinder are equipped with a one-way damping valve at the connection between the cylinder inlet and the connecting pipe, which effectively prevents changes in the working pressure of the cylinder and makes the lifting and unloading process smooth and stable. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the hydraulic pipeline structure of the palm fiber cart of this utility model;

[0017] Figure 2 This is a top view schematic diagram of the hydraulic pipeline structure of the palm fiber vehicle of this utility model.

[0018] The components include: oil tank 1, oil filter 2, gear pump 3, multi-way valve 4, connecting pipe 5, tee 6, outrigger cylinder 7, grab cylinder 8, hydraulic motor 9, lifting cylinder 10, unloading cylinder 11, slewing bearing 12, picking outrigger 13, one-way damping valve 14, and restraint frame 15. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Figure 1-2The diagram illustrates the hydraulic piping of a palm oil truck, including an oil tank 1, an oil filter 2, a gear pump 3, a multi-way valve 4, a connecting pipe 5, a tee 6, two outrigger cylinders 7, a grab cylinder 8, a hydraulic motor 9, a lifting cylinder 10, and an unloading cylinder 11. The multi-way valve 4 is located on the right side of the front centerline of the palm oil truck for easy connection of the supporting piping. The gear pump 3 is located on the left side of the front centerline for flow output from each working pipe. The shaft of the hydraulic motor 9 is mounted on a slewing bearing 12. The two outrigger cylinders 7 and the grab cylinder 8 are fixed to the picking outrigger 13 for picking operations. The oil tank 1, oil filter 2, gear pump 3, lifting cylinder 10, and unloading cylinder 11 are all mounted on the truck body. Conventionally, the lifting cylinder 10 and unloading cylinder 11 are located on the rear centerline of the palm oil truck to prevent left-right imbalance and are used for lifting and tilting the truck bed.

[0021] The hydraulic pipeline connection structure is as follows: The oil tank 1 and oil filter 2, and the gear pump 3 and oil filter 2 are connected via their respective ports and connecting pipes 5. The multi-way valve 4 has at least 13 ports. Port I is connected to another port of the oil tank via connecting pipe 5; port II is connected to another port of the gear pump 3 via connecting pipe 5; ports III and IV are connected to the lifting cylinder 10 and unloading cylinder 11 via connecting pipes 5, respectively, forming the lifting hydraulic circuit and the unloading hydraulic circuit; ports V and VI, and ports VII and VIII... The multi-way valve 4 is connected to the rod-side and rodless chambers of the two outrigger cylinders 7 via connecting pipe 5, forming the outrigger hydraulic circuit. Its ports IX and X are connected to the rod-side and rodless chambers of the grab cylinder 8 via connecting pipe 5, forming the grab hydraulic circuit for opening and closing the grab. Its port XI is connected to the hydraulic motor 9 via connecting pipe 5, forming the rotary hydraulic circuit for rotating the palm fiber truck's picking arm. Its ports XII and XIII are connected to two ports of the tee 6 via connecting pipe 5, and the other port of the tee 6 is connected to the other port of the oil filter 2. Therefore, the multi-way valve 4 acts as a central hub, combining... Figures 1-2 Because it is located on the right side of the centerline at the front of the palm vehicle, it facilitates the connection of supporting pipelines, keeps away from engine components and exhaust system, and avoids rubbing against rotating and swivel parts between pipelines, ensuring smooth operation.

[0022] After multiple trials and verifications, this utility model fully considers the rationality of each pipeline in its design. The placement of pipe components is reasonable, and there are no issues with pipeline flow or pipeline damage caused by friction or compression that would affect operations. A multi-way valve and connecting pipes connect the hydraulic motor, each hydraulic cylinder, and the oil tank to form a corresponding hydraulic operating circuit, thereby controlling the rotation of the picking arm, the opening and closing of the grab bucket, and the lifting and tilting of the truck bed, ultimately completing the palm oil truck's picking and transporting operations. The entire process uses multi-way valves for hydraulic control, ensuring stable operation.

[0023] In this embodiment, the multi-way valve is controlled by a control handle to supply or return oil to the corresponding oil circuit. The control handle can be an operating mechanism disclosed in the patent entitled "Hand Pilot Valve" with patent number "CN200810062434.9". Since this type of operating mechanism belongs to the prior art, it will not be described in detail here.

[0024] Because low working pressure of the hydraulic cylinder can cause the raised car body to fall back and the tipping cylinder to stop, thus affecting the tipping operation, in order to effectively prevent changes in the working pressure of the hydraulic cylinder, both the lifting cylinder 10 and the unloading cylinder 11 are equipped with a one-way damping valve 14 at the connection between the cylinder body oil inlet and the connecting pipe 5, so as to achieve a smooth and stable lifting and tipping unloading effect.

[0025] Several restraint frames 15 are provided on the side of the picking arm 13. The connecting pipes 5 in the hydraulic circuit of the arm and the hydraulic circuit of the gripping are laid through the restraint frames 15 to organize the multiple connecting pipes 5 so that they do not become scattered, making it easy to connect and not to interfere with other pipelines.

[0026] When the gear pump 3 and the oil filter 2 are connected by a connecting pipe, the gear pump 3 is provided with two oil inlets and the oil filter 2 is provided with two corresponding oil inlets. The purpose of designing two oil inlets is mainly to prevent the oil volume from being insufficient and thus require additional inlets.

[0027] Generally, hollow bolts are used to connect the connecting pipe 5 and the oil port. In order to improve the sealing performance and prevent oil leakage, a 24° cone sealing structure can be used to connect the connecting pipe 5 and the oil port.

[0028] In this embodiment, the materials of the connecting pipe 5 and the connecting tube include, but are not limited to, rubber, plastic and metal pipes. Preferably, the material of the connecting pipe 5 is rubber, because rubber is more durable, flexible and has better connection sealing.

[0029] The working principle of this utility model:

[0030] When the operating handle of the multi-way valve 4 is placed in the "lift" position, the hydraulic oil in the oil tank 1 is filtered by the oil filter 2 and then flows through the lifting hydraulic circuit, unloading hydraulic circuit, outrigger hydraulic circuit, grabbing hydraulic circuit and rotating hydraulic circuit respectively. Each hydraulic circuit does not interfere with the others, ensuring smooth operation.

[0031] 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 hydraulic pipeline for a palm oil cart, characterized in that: The system includes an oil tank (1), an oil filter (2), a gear pump (3), a multi-way valve (4), a connecting pipe (5), a tee (6), two outrigger cylinders (7), a grab cylinder (8), a hydraulic motor (9), a lifting cylinder (10), and an unloading cylinder (11). The oil tank (1) and the oil filter (2), as well as the gear pump (3) and the oil filter (2), are connected through their own ports and the connecting pipe (5). The multi-way valve (4) has at least 13 ports. Its oil port I is connected to another oil port of the oil tank through the connecting pipe (5), its oil port II is connected to another oil port of the gear pump (3) through the connecting pipe (5), its oil ports III and IV are connected to the lifting cylinder (10) and the unloading cylinder (11) through the connecting pipe (5) respectively, forming the lifting hydraulic circuit and the unloading hydraulic circuit respectively; its oil ports V and VI and oil ports VII and VIII are connected to the rod chamber and rodless chamber of the two outrigger cylinders (7) through the connecting pipe (5) respectively, forming the outrigger hydraulic circuit; its oil ports IX and X are connected to the rod chamber and rodless chamber of the grab cylinder (8) through the connecting pipe (5) respectively, forming the grabbing hydraulic circuit; its oil port XI is connected to the hydraulic motor (9) through the connecting pipe (5), forming the rotary hydraulic circuit; its oil ports XII and XIII are connected to the two oil ports of the tee (6) through the connecting pipe (5) respectively, and the other oil port of the tee (6) is connected to the other oil filter (2). The hydraulic motor (9) is mounted on the slewing bearing (12), the two arm cylinders (7) and the grab cylinder (8) are fixed on the picking arm (13), the oil tank (1), oil filter (2), gear pump (3), lifting cylinder (10) and unloading cylinder (11) are mounted on the vehicle body, the multi-way valve (4) is located on the right side of the center axis at the front of the palm truck, and the gear pump (3) is located on the left side of the center axis at the front.

2. The hydraulic piping of the palm oil cart according to claim 1, characterized in that: Both the lifting cylinder (10) and the unloading cylinder (11) are equipped with a one-way damping valve (14) at the connection between the oil inlet of the cylinder body and the connecting pipe (5).

3. The hydraulic piping of the palm oil cart according to claim 1, characterized in that: Several restraint frames (15) are provided on the side of the picking arm (13), and the connecting pipes (5) in the hydraulic circuit of the arm and the hydraulic circuit of the gripping are laid through the restraint frames (15).

4. The hydraulic piping of the palm oil cart according to claim 1, characterized in that: When the gear pump (3) and the oil filter (2) are connected by a connecting pipe, the gear pump (3) is provided with two oil inlets and the oil filter (2) is provided with two corresponding oil ports.

5. The hydraulic lines of the palm oil cart according to any one of claims 1-4, characterized in that: The connecting pipe (5) and the oil port are connected by a 24° cone sealing structure.

6. The hydraulic lines of the palm oil cart according to any one of claims 1-4, characterized in that: The connecting pipe (5) is made of rubber.

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