Oil tank for hydraulic steering system

Abstract

The utility model belongs to the technical field of oil tanks and discloses an oil tank for a hydraulic steering system. The oil filter is mainly technically characterized by comprising a shell with an oil return opening and an oil outlet, an oil cavity is formed in the shell, a filter element with a pressure spring on the top is arranged in the oil cavity, the lower portion of the filter element is communicated with the oil outlet, an oil tank cover hole is formed in the upper portion of the shell, and an oil tank cover is arranged above the oil tank cover hole. The center of the oil outlet and the center of the oil tank cover hole are located on the same vertical straight line, the oil tank cover comprises a cover body and a sleeve located below the cover body, and the compression spring and the upper half portion of the filter element are inserted into the sleeve. Only one oil tank cover hole is formed in the upper portion of the shell, machining is convenient, the overall sealing performance is better, oil can be supplemented into an oil tank through the oil tank cover hole, the filter element can be taken and placed, the pressure spring can be jacked and pressed through the cover body, the sealing effect of the filter element and the oil outlet in the lower portion is better, and the service life of the oil tank is prolonged. And the sleeve below the cover body can also prevent the pressure spring and the filter element from inclining, so that the use is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil tanks, and in particular relates to an oil tank for a hydraulic steering system. Background Art

[0002] The steering oil tank of the existing machinery includes a housing with an oil return port and an oil outlet. An oil cavity is arranged in the housing. A filter element with a compression spring on the top is arranged in the oil cavity. The bottom of the filter element is connected to the oil outlet. A filter element hole is arranged on the housing above the compression spring. A compression spring pressure cover is arranged on the filter element hole. A refueling hole is arranged on one side of the filter element hole, and an oil tank cap is arranged above the refueling hole. The oil in the oil circuit returns to the oil cavity from the oil return port, and flows out from the oil outlet after being filtered by the filter element. The steering oil tank of the existing machinery has the following defects: first, the filter hole and the refueling hole are arranged on the top of the shell, which not only has low processing efficiency but also has poor sealing effect, which is easy to cause defects such as oil leakage; second, there is an exhaust channel on the oil tank cover. During the exhaust process, the oil droplets mixed in the gas will be discharged into the air along with the exhaust of the gas, which not only causes waste of oil but also pollutes the environment; third, when the oil level in the oil chamber is low, the oil in the oil chamber cannot enter the filter element when the lower part of the filter element is blocked, resulting in the occurrence of vacuum phenomenon. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an oil tank for a hydraulic steering system which is easy to process, has a good sealing effect and avoids causing pollution to the environment.

[0004] In order to solve the above problems, the technical solution adopted by the oil tank for the hydraulic steering system of the utility model is: it includes a shell with an oil return port and an oil outlet, an oil chamber is arranged in the shell, a filter element with a compression spring on the top is arranged in the oil chamber, the bottom of the filter element is connected with the oil outlet, a tank cover hole is arranged above the shell, a tank cover is arranged above the tank cover hole, the center of the oil outlet and the center of the tank cover hole are on the same vertical line, the tank cover includes a cover body and a sleeve located below the cover body, the compression spring and the upper half of the filter element are inserted into the sleeve.

[0005] Its additional technical features are:

[0006] The cover body includes an externally threaded sleeve whose lower end is connected to the tank cover hole and a connecting bowl body located above the externally threaded sleeve, an upper cover is arranged above the connecting bowl body, a limiting groove is arranged on the outer side of the connecting bowl body, a limiting convex strip corresponding to the limiting groove is arranged on the inner wall of the upper cover, a vertical vent is arranged at the bottom of the connecting bowl body, a metal mesh is arranged in the connecting bowl body, and a ventilation hole is arranged on the upper edge of the connecting bowl body.

[0007] Compared with the prior art, the oil tank for the hydraulic steering system and the method for oil circuit breathing using the respirator provided by the utility model have the following advantages:

[0008] First, it comprises a housing with an oil return port and an oil outlet, an oil cavity is arranged in the housing, a filter element with a compression spring on the top is arranged in the oil cavity, the bottom of the filter element is communicated with the oil outlet, a fuel tank cover hole is arranged above the housing, a fuel tank cover is arranged above the fuel tank cover hole, the center of the oil outlet and the center of the fuel tank cover hole are on the same vertical line, the fuel tank cover comprises a cover body and a sleeve located below the cover body, the compression spring and the upper half of the filter element are inserted into the sleeve In the cylinder, only one oil tank cover hole is opened above the shell, which is easy to process and has better overall sealing. Through the oil tank cover hole, oil can be added to the oil tank and the filter element can be taken out and placed. The cover body can also press the compression spring to make the filter element and the oil outlet below more sealed. The sleeve under the cover body can also prevent the compression spring and the filter element from tilting, making it more convenient to use. When the oil level in the oil chamber is low, in the case of blockage under the filter element, because the oil level is higher than the lower edge of the sleeve, under the action of negative pressure, The oil product rises along the inside of the sleeve and enters the filter element through the upper part of the filter element, thereby avoiding the occurrence of vacuum phenomenon; secondly, since the cover body includes an externally threaded sleeve connected to the oil tank cover hole at the lower end and a connecting bowl body located above the externally threaded sleeve, an upper cover is arranged above the connecting bowl body, a limiting groove is arranged on the outer side of the connecting bowl body, a limiting convex strip corresponding to the limiting groove is arranged on the inner wall of the upper cover, a vertical air vent is arranged at the bottom of the connecting bowl body, a metal mesh is arranged in the connecting bowl body, and an air vent is arranged on the upper edge of the connecting bowl body. The air mixed with oil droplets in the oil tank enters the interior of the connecting bowl body through the vertical air vent. When the air mixed with oil droplets passes through the metal mesh, the gas passes through the gaps in the metal mesh, and the oil droplets adhere to the metal mesh. As the oil droplets accumulate from small oil droplets to large oil droplets, they fall into the connecting bowl body under the action of their own gravity, and flow into the oil tank through the vertical air vent after being gathered, thereby avoiding the oil droplets from entering the air outside the oil tank along with the gas, which not only avoids environmental pollution but also avoids the waste of oil products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the oil tank for the hydraulic steering system of the utility model;

[0010] Figure 2 This is a top view of the oil tank for the hydraulic steering system;

[0011] Figure 3 is a schematic diagram of the structure of the cover;

[0012] Figure 4 It is a schematic diagram of the structure of the cover body after the metal mesh is removed;

[0013] Figure 5 It is a schematic diagram of the structure of connecting the bowl body;

[0014] Figure 6 A top view of the connecting bowl body;

[0015] Figure 7 It is a bottom view of the connected bowl body. DETAILED DESCRIPTION

[0016] The structure and use principle of the oil tank for the hydraulic steering system of the utility model are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] like Figure 1 and Figure 2 As shown, a schematic diagram of the structure of an oil tank for a hydraulic steering system of the utility model, the oil tank for a hydraulic steering system of the utility model comprises a shell 3 with an oil return port 1 and an oil outlet 2, an oil chamber 4 is arranged in the shell 3, a filter element 6 with a compression spring 5 on the top is arranged in the oil chamber 4, the bottom of the filter element 6 is connected with the oil outlet 2, a tank cover hole 7 is arranged above the shell 3, a tank cover 8 is arranged above the tank cover hole 7, the center of the oil outlet 2 and the center of the tank cover hole 7 are on the same vertical line, the tank cover 8 comprises a cover body 9 and a sleeve 10 located below the cover body 9, the compression spring 5 and the upper half of the filter element 6 are inserted into the sleeve 10. The utility model hydraulic steering system oil tank has only one oil tank cover hole 7 on the upper part of the housing 3, which is convenient to process and has better overall sealing performance. Through the oil tank cover hole 7, oil can be added to the oil tank and the filter element can be taken and placed. The cover body 9 can also press the compression spring 5 to make the filter element 6 and the oil outlet 2 below have a better sealing effect. The sleeve 10 below the cover body 9 can also prevent the compression spring and the filter element from tilting, making it more convenient to use. When the oil level in the oil chamber is low, in the case of blockage of the lower part of the filter element 6, because the oil level is higher than the lower edge of the sleeve 10, under the action of negative pressure, the oil rises along the inside of the sleeve 10 and enters the filter element through the upper part of the filter element, avoiding the occurrence of vacuum phenomenon.

[0018] like Figure 3 , 4As shown in Figures 5, 6 and 7, the cover body 9 includes an externally threaded sleeve 11, a lower end of which is connected to the tank cover hole 7, and a connecting bowl body 12 located above the externally threaded sleeve 11, an upper cover 13 is arranged above the connecting bowl body 12, a limiting groove 14 is arranged on the outer side of the connecting bowl body 12, a limiting convex strip 15 corresponding to the limiting groove 14 is arranged on the inner wall of the upper cover 13, a vertical vent 16 is arranged at the bottom of the connecting bowl body 12, a metal mesh 17 is arranged in the connecting bowl body 12, and a vent 18 is arranged on the upper edge of the connecting bowl body 12. Air mixed with oil droplets enters the connecting bowl body 12 from the oil tank through the vertical air vent 16. When the air mixed with oil droplets passes through the metal mesh 17, the gas passes through the gaps in the metal mesh 17 and is discharged into the air outside the oil tank through the air vent 18. The oil droplets adhere to the metal mesh 17. As the oil droplets accumulate from small droplets to large droplets, they fall into the connecting bowl body 12 under the action of their own gravity. After being collected, they flow into the oil tank through the vertical air vent 16, preventing the oil droplets from entering the air outside the oil tank along with the gas, which not only avoids environmental pollution but also avoids waste of oil products.

[0019] The protection scope of the present utility model is not limited to the above-mentioned embodiments. As long as the structure is the same or similar to the oil tank structure for the hydraulic steering system of the present utility model, it falls within the protection scope of the present utility model.

Claims

1. An oil tank for a hydraulic steering system, comprising a housing with an oil return port and an oil outlet, an oil chamber provided in the housing, a filter element with a compression spring on the top provided in the oil chamber, the bottom of the filter element being connected to the oil outlet, an oil tank cover hole provided above the housing, and an oil tank cover provided above the oil tank cover hole, characterized in that: The center of the oil outlet is on the same vertical line as the center of the tank cover hole. The tank cover includes a cover body and a sleeve located below the cover body. The compression spring and the upper half of the filter element are inserted into the sleeve.

2. The oil tank for the hydraulic steering system according to claim 1, characterized in that: The cover body includes an externally threaded sleeve whose lower end is connected to the tank cover hole and a connecting bowl body located above the externally threaded sleeve, an upper cover is arranged above the connecting bowl body, a limiting groove is arranged on the outer side of the connecting bowl body, a limiting convex strip corresponding to the limiting groove is arranged on the inner wall of the upper cover, a vertical vent is arranged at the bottom of the connecting bowl body, a metal mesh is arranged in the connecting bowl body, and a ventilation hole is arranged on the upper edge of the connecting bowl body.

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