Secondary adsorption filtering device of speed reducer

Abstract

The utility model discloses a secondary adsorption filtering device of a speed reducer, which comprises a tubular body arranged at the upper part of a filter cartridge and butted with the filter cartridge and a permanent magnet arranged on the inner wall of a tube hole of the tubular body, and lubricating oil flowing from a core tube of the filter cartridge to an electronic oil pump flows through the tube hole of the tubular body; the multiple permanent magnets are arranged on the inner wall of a pipe hole of the tubular body at equal intervals. The upper end of the tubular body is closed, and an oil outlet window enabling lubricating oil in a tube hole to flow outwards is arranged on the wall of the tube hole of the tubular body. The device has the advantages that the amount of scrap iron contained in lubricating oil is greatly reduced through secondary adsorption, and accumulation of the scrap iron on the filter cartridge is reduced, so that the maintenance frequency of the filter cartridge is reduced, and the service life of the filter cartridge is prolonged; the secondary adsorption filtering device is simple in structure and convenient to disassemble and clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to a secondary adsorption filter device of a speed reducer belongs to the technical field of speed reducer filter. BACKGROUND

[0002] A kind of speed reducer, such as loader's speed reducer, uses electronic pump to carry out active lubrication, mainly lubricates each bearing of speed reducer, simultaneously, can also provide a stream of lubricating oil auxiliary lubrication to the bearing or gear that speed reducer internal splash lubrication is poor.

[0003] Active lubrication system is mainly composed of oil pump, oil pipe and oil passage designed in shell structure. Oil pump is pumped from the oil storage cavity at the bottom of speed reducer through suction port, then lubricating oil is delivered to each bearing and gear through the oil passage and oil injection pipe designed in shell, to lubricate gear and bearing. After lubrication, oil returns to oil storage cavity for next cycle.

[0004] To ensure that impurities in oil do not enter the active lubrication oil circuit, a filter is usually added in front of the oil suction port of the oil pump. Its function is to filter impurities in the lubricating oil before it enters the oil pump. However, after the speed reducer runs for a period of time, iron filings generated during gear running-in will mix into the oil. In this case, the filter cartridge will inevitably adsorb iron filings. To avoid the filter cartridge adsorbing too many impurities and causing poor lubrication, the existing technology is to clean or replace the filter regularly to ensure the lubrication effect of the system, which increases the maintenance and replacement cost of the filter cartridge. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is how to reduce the maintenance frequency of the filter cartridge and prolong the service life of the filter cartridge.

[0006] To solve the above problems, the technical solution proposed by the utility model is as follows:

[0007] A secondary adsorption filter device of a speed reducer, comprising a tubular body in butt joint with the filter cartridge at the upper part of the filter cartridge and a permanent magnet installed on the inner wall of the tubular hole of the tubular body. Lubricating oil flowing from the core tube of the filter cartridge to the electronic oil pump flows through the tubular hole of the tubular body.

[0008] The permanent magnet has multiple pieces, and is arranged at equal intervals on the inner wall of the tubular hole of the tubular body.

[0009] The upper end of the tubular body is closed, and an oil outlet window is arranged on the wall of the tubular hole of the tubular body to allow the lubricating oil in the tubular hole to flow outwards.

[0010] The oil outlet window has multiple pieces, and is arranged at equal intervals, with the permanent magnet arranged between two adjacent oil outlet windows.

[0011] The tubular body has an installation slot axially arranged on the inner wall of the tube hole, and the permanent magnet is installed in the installation slot in a manner of being inserted from the tube hole port of the tubular body.

[0012] The upper end of the tube hole of the tubular body is provided with a flange plate, the upper end of the tube hole is blocked by the flange plate, and the flange plate and the tubular body are bolted on the reducer shell through the edge of the flange plate.

[0013] The lower bottom surface of the edge of the flange plate is provided with an annular sealing groove for placing a sealing ring. Advantageous effects

[0014] 1. The amount of iron filings contained in the lubricating oil is greatly reduced by secondary adsorption, the accumulation of the iron filings on the filter cartridge is reduced, the maintenance frequency of the filter cartridge is reduced, and the service life of the filter cartridge is prolonged.

[0015] 2. The secondary adsorption and filtration device has simple structure and is convenient to disassemble and clean. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a partial cross-sectional view of the reducer of embodiment one.

[0017] Figure 2 It is a partial view of Figure 1 .

[0018] Figure 3 It is a schematic view of the connection relationship between the secondary adsorption and filtration device of embodiment one and the filter cartridge.

[0019] Figure 4 It is a partial view of the secondary adsorption and filtration device of embodiment one.

[0020] Figure 5 It is a schematic view of the connection relationship between the secondary adsorption and filtration device of embodiment two and the filter cartridge.

[0021] In the figure: 100, reducer; 1, tubular body; 101, tube hole; 102, oil outlet window; 103, installation slot; 2, permanent magnet; 3, flange plate; 301, sealing groove; 4, sealing ring; 5, bolt; 6, filter cartridge; 7, electronic oil pump; 8, oil channel; 9, installation cavity. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings: Embodiment one

[0023] For example, Figure 1As shown in Figure 4, a secondary adsorption filtration device for a speed reducer includes a tubular body 1 connected to the upper part of a filter cartridge 6 and a permanent magnet 2 installed on the inner wall of the tube hole of the tubular body 1. Lubricating oil flowing from the core tube of the filter cartridge 6 to the electronic oil pump 7 flows through the tube hole 101 of the tubular body 1. When flowing through the tube hole 101, the iron filings contained therein are adsorbed by the permanent magnet 2, so that the lubricating oil filtered by the filter cartridge 6 is further purified a second time. The iron filings adsorbed by the permanent magnet can be removed and cleaned after accumulating to a certain amount, which greatly reduces the amount of iron filings contained in the lubricating oil in the speed reducer, reduces its accumulation on the filter cartridge 6, thereby reducing the maintenance frequency of the filter cartridge 6 and extending the service life of the filter cartridge 6.

[0024] There are multiple permanent magnets 2, which are evenly spaced on the inner wall of the tube hole of the tubular body 1.

[0025] The upper end of the tubular body 1 is closed, and an oil outlet window 102 is provided on the wall of the tube hole 101 of the tubular body 1 to allow the lubricating oil in the tube hole 101 to flow out.

[0026] There are multiple oil outlet windows 102, which are equally spaced, and the permanent magnet is located between two adjacent oil outlet windows 102. It is required that there is a gap between the inner wall of the mounting cavity 9 of the tubular body 1 and the outer periphery of the tubular body 1, so that the lubricating oil flowing out of each oil outlet window 102 can pass through the gap and flow into the oil passage 8 leading to the electronic oil pump.

[0027] The inner wall of the tube hole of the tubular body 1 has an axially arranged mounting groove 103, and the permanent magnet 2 is installed in the mounting groove 103 by being inserted from the port of the tube hole 101 of the tubular body 1.

[0028] A flange 3 is provided at the upper end of the tube hole 101 of the tubular body 1. The upper end of the tube hole 101 is sealed by the flange 3, and the flange 3 and the tubular body 1 are installed on the housing of the reducer 100 by bolts 5 through the edge of the flange 3. This facilitates the disassembly and cleaning of the secondary adsorption filtration device.

[0029] The lower surface of the flange 3 edge is provided with an annular sealing groove 301 for placing the sealing ring 4. The flange 3 is pressed against the outer surface of the reducer 100 housing and sealed by the sealing ring, so that the lubricating oil flowing into the mounting cavity 9 from the oil outlet window 102 will not leak out of the reducer housing. Example 2

[0030] like Figure 5 As shown, the difference between this embodiment and the first embodiment is that there is only one oil outlet window 102, which is located in the upper region of the tubular body 1 on the side facing the oil passage 8 leading to the electronic oil pump 7.

[0031] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A secondary adsorption filter device for a speed reducer, characterized by: The tubular body (1) is connected with the filter cartridge (6) at the upper part of the filter cartridge (6), and the permanent magnet (2) is installed on the inner wall of the tube hole of the tubular body (1). The lubricating oil flowing from the core tube of the filter cartridge (6) to the electronic oil pump (7) flows through the tube hole (101) of the tubular body (1).

2. The secondary adsorption filter device of the speed reducer according to claim 1, characterized in that: The permanent magnet (2) has multiple pieces and is arranged at equal intervals on the inner wall of the tube hole of the tubular body (1).

3. The secondary adsorption filter device of the speed reducer according to claim 2, characterized in that: The upper end of the tubular body (1) is closed, and the oil outlet window (102) for allowing the lubricating oil in the tube hole (101) to flow out is arranged on the hole wall of the tube hole (101) of the tubular body (1).

4. The secondary adsorption filter device of the speed reducer according to claim 3, characterized in that: The oil outlet window (102) has multiple pieces and is arranged at equal intervals, and the permanent magnet is arranged between two adjacent oil outlet windows (102).

5. The secondary adsorption filter device of the speed reducer according to claim 2, characterized by: The inner wall of the tube hole of the tubular body (1) is provided with an axial installation groove (103), and the permanent magnet (2) is installed in the installation groove (103) in a manner of being inserted from the port of the tube hole (101) of the tubular body (1).

6. The secondary adsorption filter device of the speed reducer according to claim 3, characterized by: The flange plate (3) is arranged at the upper end of the tube hole (101) of the tubular body (1), the upper end of the tube hole (101) is blocked by the flange plate (3), and the flange plate (3) and the tubular body (1) are installed on the housing of the speed reducer (100) by the bolts (5) through the edges of the flange plate (3).

7. The secondary adsorption filter device of the retarder according to claim 6, characterized in that: The lower bottom surface of the edge of the flange plate (3) is provided with an annular sealing groove (301) for placing a sealing ring.

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