JPH0563606U - Hydraulic line dedusting device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a device that can easily remove dust and the like that have entered during hydraulic line assembly in the hydraulic line. [Structure] A cylinder is provided between a part of an outer peripheral portion of a union bolt 6 provided at a connection portion of a pipe 2 of a hydraulic line with a hydraulic equipment body 8 and an inner diameter portion of a pipe joint portion 13 into which the union bolt 6 is screwed. A dust removing device for a hydraulic line provided with a net-like body 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dust removal device that can be incorporated into a hydraulic line of various machines that can easily remove dust that has been present during the assembly process and the like.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, dust generated in various types of machinery, for example, a transmission 12 of a hydraulic line of an agricultural tractor schematically shown in FIG. 5 is interposed in pipes 3 and 5 provided on an intake side of an oil pump 1. It is possible to capture with the oil filter 4 such as a cartridge type. However, the dust in the pipes 3 and 2 after the oil filter 4 cannot be trapped at the time of assembly, and when they enter the hydraulic equipment, for example, the valve body 8 from the pipes 3 and 2, the dust will be caught in the valve or the like. There was a problem of causing trouble.

[0003]

[Problems to be solved by the device]

 On the other hand, the connecting portion between the valve body 8 and the pipe 2 is, as shown in the enlarged sectional view of FIG. 6, a pipe joint 13 integrally welded at the end of the pipe 2 and a union bolt 6 having an oil passage inside. There was an example in which the filter 14 for removing dust was inserted into the oil passage of the union bolt 6 by screwing in the connection, but in this case, it is not easy to take the filter 14 in and out of the oil passage, and It was difficult to secure the filtration area, the filter 14 was clogged immediately after use, and the number of replacements increased, which caused many problems in terms of maintenance and performance.

The present invention has been made to solve the above-mentioned conventional problems, and it is possible to easily take out the dust that has entered during assembly, which is interposed in the hydraulic line, and has a relatively large filtration area. It is an object of the present invention to provide a dust removal device for hydraulic lines that can secure a large amount and can improve the reliability of hydraulic equipment.

[0005]

[Means for Solving the Problems]

 As means for solving the above problems, the hydraulic line dust removing device of the present invention is provided with a part of the outer peripheral portion of the union bolt provided at the connection part of the pipe of the hydraulic line with the main body of the hydraulic equipment and the union bolt. It is configured by interposing a cylindrical net body between the inner diameter portion of the pipe joint portion to be screwed.

The mesh may be a cylindrical wire mesh having an appropriate mesh, a cylindrical mesh formed of a synthetic resin molded body, or a cylindrical mesh formed by braiding bristles.

[0007]

[Work]

 The dust removing device having the above-mentioned configuration is a cylindrical mesh body, which is generally used to connect the end of the pipe to the main body of the oil equipment and is interposed between the pipe joint and the union bolt. It removes dust in the line, and the mesh can be easily attached and detached.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a main part of a hydraulic line dust removing device according to the first embodiment of the present invention, and FIG. 2 is a dust removing net of FIG. It is a perspective view of a strip. This dust removing device includes a union bolt 6 provided at a connecting portion between a pipe 2 and a valve body 8 which is a hydraulic equipment body in a hydraulic line of a tractor similar to the conventional example shown in FIG. It is applied between a pipe joint 13 into which the screw 6 is screwed, and between a part of the outer peripheral portion of the union bolt 6 and the inner diameter portion of the pipe joint 13 as shown in FIG. It is characterized by the installation of the.

In FIG. 1, the pressure oil L is filtered by the cylindrical mesh body 11 from inside the pipe joint 13 in which the end portion of the pipe 2 is welded as shown by the arrow, and then flows through the oil passage inside the union bolt 6. As described above, it is introduced into the valve body 8, but gaskets 9 and 10 are inserted to prevent oil leakage at the connecting portion. Next, FIGS. 3 and 4 show a dust removing device according to a second embodiment, which is applied to a hydraulic line substantially similar to the embodiment of FIG. 1, and the same parts as those in FIG. 1 have the same part numbers. The difference is that the cylindrical mesh body 11 is formed by forming a circumferential projection 6A for preventing filter deformation on the outer peripheral portion of the union bolt 6 which is in contact with the cylindrical mesh body 11. It is possible to prevent the center portion from being deformed by the pressure oil, and as a result, it is possible to secure a sufficient filtration area, whereby an inexpensive cylindrical mesh body 11 can be used.

Further, since the positions of the two oil passage holes 6B communicating with the oil passage provided inside the union bolt 6 are different from each other in the front and rear, and the angles are changed by 90 °, the cylindrical mesh body is formed. There is also an advantage that the filtration surface area of 11 can be utilized more effectively.

[0011]

[Effect of the device]

 A hydraulic line debris removal device according to the present invention is provided with a part of an outer peripheral portion of a union bolt provided at a connection portion of a pipe of the hydraulic line with a main body of a hydraulic device, and an inner diameter portion of a pipe joint portion into which the union bolt is screwed. Between them, a cylindrical mesh body is provided.

Therefore, dust that has entered during the assembly of the hydraulic line can be easily removed, which is effective in improving the reliability of hydraulic equipment. In addition, the device of the present invention can be mounted on the union bolt type joint without changing its external shape, which has the advantages that it does not take up space, is low in cost, and can be easily attached and detached. Further, since the device of the present invention is provided between the outer peripheral portion of the union bolt and the inner diameter portion of the pipe joint portion, a sufficient effective filtration area can be secured, so that the period until the mesh body replacement can be extended. it can.

[Brief description of drawings]

FIG. 1 is a side sectional view of a main part of a dust removing device for a hydraulic line according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the mesh body of FIG.

FIG. 3 is a side sectional view of a main part of a dust removing device according to a second embodiment of the present invention.

FIG. 4 is a side view of the union bolt of FIG.

FIG. 5 is a schematic side view showing a hydraulic line of a conventional tractor.

FIG. 6 is a side sectional view showing an enlarged main part of the conventional valve body shown in FIG.

[Explanation of symbols]

2 Pipe 6 Union bolt 8 Valve body 11 Cylindrical net 13 Pipe joint part.

Claims (1)

[Scope of utility model registration request] 1. A part of an outer peripheral portion of a union bolt provided at a connection portion of a pipe of a hydraulic line with a main body of hydraulic equipment,
A dust removing device for a hydraulic line in which a cylindrical mesh body is provided between the union bolt and the inner diameter of the pipe joint.