Improved tractor lifting oil cylinder oil pipe structure

Abstract

The utility model provides an improved tractor lift oil cylinder oil pipe structure which comprises a multi-way valve, a left lift oil cylinder and a right lift oil cylinder, the outlet end of the multi-way valve is fixedly connected with a straight-through adapter, and the front end of the straight-through adapter is fixedly provided with a first flow dividing pipe and a second flow dividing pipe. The outlet end of the first flow dividing pipe is connected with a slow descending valve through a first oil cylinder rubber pipe, the slow descending valve is installed at an oil port of a lower oil cavity of the left lifting oil cylinder, the outlet end of the first flow dividing pipe is connected with the slow descending valve through a second oil cylinder rubber pipe, and the slow descending valve is installed at an oil port of a lower oil cavity of the right lifting oil cylinder. The second flow dividing pipe is connected with an oil port of an upper oil cavity of the left lifting oil cylinder through a first oil cylinder rubber pipe, and the second flow dividing pipe is connected with an oil port of an upper oil cavity of the right lifting oil cylinder through a second oil cylinder rubber pipe. The split-flow iron pipes are arranged on the two sides respectively, collision between the upper pull rod and the lifting rubber pipe when a large agricultural implement is carried is avoided, the damage frequency of the oil pipe is reduced, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to an improved structure of the hydraulic pipe of a tractor lifting cylinder. Background Technology

[0002] With the continuous development of modern agriculture, the requirements for agricultural machinery are also increasing. Existing domestically manufactured tractors, while ensuring practicality, have also made great efforts in terms of functional diversity. Features such as built-in air conditioning, multi-speed selection, electronic PTO, and hydraulic technology provide users with great convenience and comfort in driving. However, everything has two sides; advantages inevitably come with disadvantages. While adding so many functions, it will inevitably have a significant impact on the overall spatial layout of the machine, especially on peripheral components. The routing of hydraulic lines must fully consider various factors, with simplicity and rationality being the primary principle. The tractor's lifting cylinder hydraulic line is an auxiliary component of the hydraulic lifting system, transmitting hydraulic oil between the multi-way valve and the lifting cylinder, causing the cylinder to move up and down, thereby realizing the lifting, lowering, and floating functions of the suspension mechanism. Figure 3 and Figure 4 The existing hydraulic cylinder hose structure on a certain tractor uses a connector to cross-connect the hydraulic cylinder hoses to a multi-way valve, and adjusts the width of the middle fork to prevent collision with the upper tie rod. This structure has the following shortcomings:

[0003] 1. When the hydraulic cylinder oil pipe adopts a cross structure, it needs to be assembled to a suitable fork width, which requires certain skills from the assembly personnel. It is necessary to assign specific personnel to specific positions, otherwise the assembly efficiency will be low and the production schedule will be delayed.

[0004] 2. When the hydraulic cylinder hoses use a cross structure, the upper tie rod and the implement are prone to bumping into the hoses when the tractor is lifting and tilting large agricultural implements such as plows. This can cause hose rupture, loosening of joints, and oil leakage, delaying the user's work and causing unnecessary economic losses.

[0005] 3. When the hydraulic cylinder oil pipe adopts a cross structure, the oil pipe structure is relatively messy and the appearance is not beautiful. It has no advantage over competing products and has a certain impact on product sales.

[0006] Therefore, it is necessary to develop a reasonable hydraulic cylinder and hydraulic pipe structure for tractors. Utility Model Content

[0007] The present invention aims to provide an improved structure of the hydraulic cylinder oil pipe of a tractor to overcome or at least partially solve the above-mentioned problems.

[0008] To achieve the above objectives, the technical solution of this utility model is specifically implemented as follows:

[0009] This utility model provides an improved hydraulic pipe structure for a tractor lifting cylinder, including a multi-way valve, a left lifting cylinder, and a right lifting cylinder. A straight-through adapter is fixedly connected to the outlet end of the multi-way valve, and a first and a second diverter are fixed to the front end of the straight-through adapter. The outlet end of the first diverter is connected to a slow-descent valve via a first cylinder hose, and the slow-descent valve is installed at the lower oil chamber port of the left lifting cylinder. The outlet end of the first diverter is connected to the slow-descent valve via the second cylinder hose, and the slow-descent valve is installed at the lower oil chamber port of the right lifting cylinder. The second diverter is connected to the upper oil chamber port of the left lifting cylinder via the first cylinder hose, and the second diverter is connected to the upper oil chamber port of the right lifting cylinder via the second cylinder hose.

[0010] As a further embodiment of this utility model, multiple sets of 45° elbows are also fixedly installed on the multi-way valve.

[0011] As a further embodiment of this utility model, each of the first and second cylinder hoses is provided with two hoses. The first two hoses are respectively connected to the upper oil chamber port and the lower oil chamber port of the left lifting cylinder, and the second two hoses are respectively connected to the upper oil chamber port and the lower oil chamber port of the right lifting cylinder.

[0012] This utility model provides an improved structure for the hydraulic pipe of a tractor lifting cylinder, with the following advantages:

[0013] 1. The original direct connection of the oil pipes between ports A and B of the multi-way valve was changed from rubber hoses to iron pipes for diversion, resulting in a more elegant and aesthetically pleasing overall appearance;

[0014] 2. Because iron pipes are not easily deformed, they are easy to assemble in the workshop, making them simple, easy to understand and learn, thus improving production efficiency.

[0015] 3. The original cross-connected rubber hoses are now separated into two sides by diverting iron pipes, with a large gap in the middle. This prevents the upper pull rod from colliding with the lifting hose when carrying large agricultural implements, reducing the frequency of hose damage, ensuring user work efficiency to a certain extent, and reducing operating costs.

[0016] 4. Compared with competing products, the layout is more aesthetically pleasing, which brings certain convenience to product sales. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the oil pipe connection of the lifting cylinder of this utility model.

[0020] Figure 3 This is a schematic diagram of the hydraulic cylinder and hydraulic pipe structure of an existing tractor.

[0021] Figure 4 This is a schematic diagram of the hydraulic cylinder connection for an existing tractor.

[0022] In the diagram: 1. Multi-way valve; 2. Straight-through adapter; 3. Diverter pipe one; 4. Diverter pipe two; 5. Hydraulic cylinder hose one; 6. Hydraulic cylinder hose two; 7. Slow-down valve; 8. Left lifting cylinder; 9. Right lifting cylinder. Detailed Implementation

[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] See Figure 1 and Figure 2 This utility model provides an improved hydraulic pipe structure for a tractor lifting cylinder, including a multi-way valve 1, a left lifting cylinder 8, and a right lifting cylinder 9. The outlet end of the multi-way valve 1 is fixedly connected to a straight-through adapter 2, and the front end of the straight-through adapter 2 is respectively fixed with a first diverter pipe 3 and a second diverter pipe 4. The outlet end of the first diverter pipe 3 is connected to a slow-descent valve 7 through a first cylinder hose 5, and the slow-descent valve 7 is installed at the lower oil chamber port of the left lifting cylinder 8. The outlet end of the first diverter pipe 3 is connected to the slow-descent valve 7 through a second cylinder hose 6, and the slow-descent valve 7 is installed at the lower oil chamber port of the right lifting cylinder 9. The second diverter pipe 4 is connected to the upper oil chamber port of the left lifting cylinder 8 through the first cylinder hose 5, and the second diverter pipe 4 is connected to the upper oil chamber port of the right lifting cylinder 9 through the second cylinder hose 6.

[0025] Multiple sets of 45° elbows are also fixedly installed on the multi-way valve 1.

[0026] Two hydraulic cylinder hoses are provided, one 5 and two hydraulic cylinder hoses 6. The two hydraulic cylinder hoses 5 are connected to the upper oil chamber port and the lower oil chamber port of the left lifting hydraulic cylinder 8, respectively. The two hydraulic cylinder hoses 6 are connected to the upper oil chamber port and the lower oil chamber port of the right lifting hydraulic cylinder 9, respectively.

[0027] In operation, the engine transmits torque to the gear pump via splines, causing the gear pump to rotate. Energy transformation occurs within the gear pump; the mechanical energy transmitted by the engine is converted into hydraulic energy, output as flow rate and pressure. Hydraulic oil pumped from the lifting tank by the gear pump flows to multi-way valve 1 via pipelines. The pipeline connections remain the same before and after the change. Port A of multi-way valve 1 is connected to a straight-through adapter 2, a first diverter pipe 3, a first cylinder hose 5, a slow-descent valve 7, a left lifting cylinder 8 (lower oil chamber port), a second cylinder hose 6, and a right lifting cylinder 9 (lower oil chamber port). Port B of multi-way valve 1 is connected to a straight-through adapter 2, a second diverter pipe 4, a first cylinder hose 5, a left lifting cylinder 8 (upper oil chamber port), a second cylinder hose 6, and a right lifting cylinder 9 (upper oil chamber port). The oil from the multi-way valve 1 is fed into the lifting cylinders on both sides through the first and second diversion pipes 3 and 4, respectively, leaving a large gap in the middle of the originally intersecting oil pipes. The installation method is fixed, simple and easy to learn, and also avoids collision with the upper pull rod, making the appearance more beautiful.

[0028] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An improved structure of a tractor lift cylinder oil pipe, characterized by, Including multi-way valve (1), left lift oil cylinder (8) and right lift oil cylinder (9), the outlet end of multi-way valve (1) is fixedly connected with straight through adapter (2), and the front end of straight through adapter (2) is fixed with shunt pipe one (3) and shunt pipe two (4) respectively, the outlet end of shunt pipe one (3) is connected with slow drop valve (7) through oil cylinder rubber tube one (5), and slow drop valve (7) is installed at the lower oil cavity oil port of left lift oil cylinder (8), the outlet end of shunt pipe one (3) is connected with slow drop valve (7) through oil cylinder rubber tube two (6), and slow drop valve (7) is installed at the lower oil cavity oil port of right lift oil cylinder (9), shunt pipe two (4) is connected with the upper oil cavity oil port of left lift oil cylinder (8) through oil cylinder rubber tube one (5), and shunt pipe two (4) is connected with the upper oil cavity oil port of right lift oil cylinder (9) through oil cylinder rubber tube two (6).

2. The improved oil tube structure for tractor lift cylinder according to claim 1, wherein A plurality of groups of 45° elbows are fixedly installed on the multi-way valve (1).

3. The improved oil tube structure for tractor lift cylinder according to claim 1, wherein The oil cylinder rubber tube one (5) and the oil cylinder rubber tube two (6) are provided with two, two oil cylinder rubber tube one (5) are connected with the upper oil cavity oil port and the lower oil cavity oil port of left lift oil cylinder (8) respectively, and two oil cylinder rubber tube two (6) are connected with the upper oil cavity oil port and the lower oil cavity oil port of right lift oil cylinder (9) respectively.

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