JPH0420484Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a mounting mechanism for a filter device in a mobile working machine.

[Prior art]

Conventionally, the mounting mechanism for oil filtration devices used in hydraulic systems and fuel oil supply devices in mobile work machines such as combine harvesters and tractors has been to attach the base of the filtration device to a mounting seat provided on the machine frame with bolts. It was getting worse. The filtration part is screwed and fixed to the base, and when the filtration part needs to be cleaned or replaced, the screwing is released and the filtration part is removed.

[Problem that the invention attempts to solve]

Regarding the mounting structure of such a conventional filtration device, it is particularly used in agricultural machinery, etc., where the vibration of the machine body is large due to the operation of the internal combustion engine, and where there is strong pulsating flow such as in hydraulic equipment. In the case of a filtration device, in response to pulsating flow vibrations caused by changes in oil pressure applied within the filtration unit along with vibrations of the aircraft,
The filter part may come loose from the screw-in part of the base and leak oil, or it may fall off and scatter oil around, causing serious damage such as staining peripheral equipment such as belts and damage to the filter part. was occurring.

In addition, if the filter part is strongly tightened and fixed to the base in order to prevent such a situation, when removing it for maintenance and inspection of the filter part, there is a problem that a special tool is required or the screw-in and seal members are worn out. There is.

Therefore, the present invention is carried out with the object of providing a mounting mechanism for a filtration device that can solve the above-mentioned problems.

[Means for solving problems]

The attachment mechanism of the filtration device in the mobile work machine of the present invention which achieves the above object has an engagement hole that can be engaged with the polygonal protrusion protruding from the center of the bottom of the filtration part of the filtration device. At the same time, the rotation stopper is fitted into a mounting piece that is fastened to the filter device through the accommodating hole when the filter device is attached to the mounting seat of the aircraft frame. It is characterized by being detachably attached.

[Function] As mentioned above, when the filtration device 1 is mounted using the mounting mechanism of the present invention, the base seat 2 is mounted to the mounting seat 8a of the body frame 8 with the mounting piece 9 in between, using the bolts 11. The position of the piece 9 is within a range of about 60 degrees as shown by the solid line and dotted line in FIG. 3 depending on the position where the rotation stopper 21 engages with the polygonal protrusion 20. The rotation stopper 21 can reliably perform its fixing action at the position of the filter section 3 which is drilled in the above manner and is most appropriately tightened and fixed to the base seat 2.

When the filter unit 3 is removed from the above-mentioned installed state for maintenance, etc., when the fastener 24 is in the position where the fastener 24 is removed, the filter unit 3 is rotated in the anti-tightening direction with the rotation stopper 21. It can be easily removed from the base 2 because it is rotated through the . And when installing the filter part 3 again,
By engaging the rotation stopper 21 with the protrusion 20 and using it as a tool, the filter section 3 can be reliably attached with the most appropriate tightening condition.

Even in this case, the mounting piece 9 can be adapted to the above-mentioned state position by the flexible hole 10, so that the filtration part 3 can be properly prevented from rotating without being over-tightened or loosened.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings.

Reference numeral 1 denotes a filtration device consisting of a base 2 and a filtration section 3, and the base 2 is provided with an inlet hole 4 and an outlet hole 5, respectively. At the same time, the base seat 2 is attached to the mounting seat 8a of the body frame 8 of the mobile work machine via the mounting piece 9. A bolt 11 is inserted into a flexible hole 10 opened in the piece 9 to attach it.

The filter unit 3 includes a mounting plate 15 provided with a female threaded mounting hole 13 and an oil passage hole 14 in the upper part of an outer case 12 whose periphery is formed airtight, and a cylindrical filter body is installed inside the mounting plate 15. 16 is installed inside to constitute a filtration chamber 17.

Such a filtration part 3 is constructed by screwing the mounting hole 13 into a male threaded mounting pipe 18 having a delivery hole 5 therein at the center of the base 2, and rotating the filtration part 3 in the screwing direction. It can be attached to the base 2 by. Note that 19 is an annular sealing member interposed between the base seat 2 and the filter section 3 during the above-mentioned installation.

20 is formed in the case 12 and the filter part 3
This is a polygonal protrusion provided at the center of the bottom surface of the hexagonal bolt, and the embodiment shows one having the same shape as the head of a hexagonal bolt. 2
Reference numeral 1 denotes a rotation stopper, which is provided with an engagement hole 22 of the same shape that engages and fits into the protrusion 20, thereby allowing the arm piece 23 extending toward one side to be attached to the attachment piece. 9 and is removably attached and fixed with a fastener 24 such as a bolt.

In the embodiment, the protrusions are regular hexagonal, but it is more preferable that they be polygonal.

[Effect of idea]

As described above, in the present invention, a plate-shaped rotation stopper having an engagement hole capable of engaging with the protrusion is fitted into a polygonal protrusion protruding from the center of the bottom of the filtration part of the filtration device. In addition, since the rotation stopper is detachably attached to the mounting piece that is fastened together with the filtration device through the flexible hole when the filtration device is attached to the mounting seat of the aircraft frame, the existing filtration structure can be replaced. It is now possible to prevent the filtration section of the filtration device from becoming loose without making major changes.

As a result, oil leakage from the filtration device and wear and tear on the equipment can be prevented, making it possible to withstand long-term use with peace of mind.

Further, according to the present invention, since the rotation stopper can be used as a tool when tightening and removing the filter part from the base of the filter device, there is an advantage that a special tool for attaching and removing the filter part is not required.

[Brief explanation of drawings]

Fig. 1 is a front view showing the installed state of the filtration device according to the embodiment of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a plan view showing the relationship of the mounting pieces, and Fig. 4 is the relationship of the rotation stopper. FIG. 5 is a sectional view showing the inside of the filtration device. 1... Filtration device, 2... Base, 3... Filtration section,
4... Infeed hole, 5... Outlet hole, 6... Infeed pipe, 7
... Delivery pipe, 8 ... Airframe frame, 9 ... Mounting piece, 10 ... Flexibility hole, 11 ... Bolt, 12 ...
Outer case, 13...Mounting hole, 14...Oil hole,
15... Mounting plate, 16... Filter body, 18... Male threaded mounting tube, 19... Seal member, 20... Protrusion, 21... Rotation stopper, 22... Engaging hole, 23
... Arm piece, 24 ... Fastener.

Claims (1)

[Scope of utility model registration request] A plate-shaped detent having an engagement hole that can be engaged with the protrusion is fitted into a polygonal protrusion protruding from the center of the bottom of the filtration part of the filtration device, and the detent is connected to the filter. 1. An attachment mechanism for a filtration device in a mobile working machine, characterized in that the filtration device is detachably attached to a mounting piece that is fastened together with the filtration device through a flexible hole when the device is attached to a mounting seat of a machine body frame.