JP2933406B2 - Hydraulic pressure source device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic pressure source device in which a hydraulic pump and an electric motor for driving the hydraulic pump are immersed in a hydraulic fluid stored in a tank.

[0002]

2. Description of the Related Art Japanese Patent Application No. 2-291424, filed by the present applicant, discloses an example of this type of hydraulic pressure source device, in which a hydraulic pump and an electric motor for driving the same are provided with a common holding frame. The holding frame is mounted on the tank with its end placed on a receiving portion formed to protrude inward at the upper part of the side wall of the tank and mounted on the tank, and the hydraulic pump and the electric motor are operated in the tank. It is kept immersed in the liquid.

[0003]

However, in this case, when repairing or replacing the hydraulic pump or the electric motor, the hydraulic pump and the electric motor are taken out of the tank together with the holding frame.
The hydraulic pump and electric motor must be removed and installed in a suitable place around the tank, and depending on the installation state of the tank, it is difficult to secure the space for the holding frame for such repairs around the tank. There was a problem that was inconvenient to use.

The present invention has been made to solve such a problem, and has a support frame supported on a tank with a hydraulic pump and an electric motor protruding out of the tank so that repair work can be performed in this state. It is an object of the present invention to provide a hydraulic pressure source device that does not require a holding frame arrangement space for repair around a tank.

[0005]

Therefore, in the present invention,
A tank is formed in a box shape with an upper opening closed by a lid and stores hydraulic fluid sucked and discharged by a hydraulic pump inside, and a hydraulic pump and an electric motor for driving the hydraulic pump are mounted inside and outside the tank through the upper opening. A holding frame formed so as to be able to enter and exit, and an upward receiving portion is provided on the side wall of the tank, and the holding frame has a mounting portion mounted on the receiving portion for mounting the holding frame on the tank. Yes,
The mounting part is formed on the holding frame, and is formed at a position lower than the immersion mounting part on the holding frame, in which the holding frame is mounted on the tank while the hydraulic pump and the electric motor are immersed in the working fluid. And a lifting mounting portion for mounting the holding frame to the tank in a lifting state in which the hydraulic pump and the electric motor protrude out of the tank.

[0006]

According to such a construction, after the lid is removed and the upper opening of the tank is opened, the immersion mounting portion is mounted on the receiving portion of the tank, and the hydraulic pump and the electric motor are immersed in the working fluid to thereby remove the tank. When the holding frame attached to the holding frame is pulled out of the tank, and then the lifting receiver at a position lower than the immersion receiver is placed on the receiving part and the holding frame is mounted on the tank, the hydraulic pump and the electric motor are activated. A lifting state protruding out of the tank is obtained. Then, at this time, the hydraulic pump and the electric motor are all or mostly located outside the tank, and even if there is a part partially located in the tank, the position is easily reached near the upper opening of the tank. Therefore, the repair work can be performed without placing the holding frame around the tank, and there is no need to secure a space for disposing the holding frame around the tank.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 8 show a first embodiment, in which 1 is a tank, and four side walls 3, 4, 5, 6 are erected on the four circumferences of a bottom wall 2 so as to form a rectangular parallelepiped box shape and part of an upper opening is an upper wall. 7. The portion that is not covered by the upper wall is the upper opening 8 of the tank 1, and 9 is a lid that covers the upper opening 8, and is attached to the tank 1 with mounting screws 10. Two receiving portions 11 and 12 are formed on the upper inner surfaces of the side walls 3 and 4 respectively.
And each receiving portion 11, 12
Has a receiving plate 13 horizontally fixed to the inner surfaces of the side walls 3 and 4 by welding, and an anti-vibration rubber 14 attached to the upper surface of the receiving plate 13.
Is standing.

Reference numeral 15 denotes a holding frame, which has a horizontal mounting portion 18 for mounting the hydraulic pump 16 and the electric motor 17, and hanging portions 19 and 20 erected on both ends of the mounting portion 18.
As shown in FIG. 6, each part 18, 19, 20 has two angle irons 18A, 18B, 19A, 19B, 2
It is framed using 0A, 20B and integrated by welding. Each hanging portion 19, 20 has a mounting piece 19C at its upper end.
20C is provided so as to protrude in the width direction.
On the projecting ends of the mounting pieces 19A and 20A, immersion mounting parts 21 and 22 mounted on the vibration-proof rubber 14 of the receiving parts 11 and 12 described above are formed.
Reference numeral 23 denotes a hole through which the mounting screw 14A of each vibration-proof rubber 14 is inserted. The mounting portion 18 has a flange 18D having a screw hole 18C for fixing the electric motor 17 integrally connected to the hydraulic pump 16 by screwing the mounting screw 24,
18E. At the lower end of each end of the mounting frame 18, two screw holes 18F are provided, respectively, and mounting screws 25, 26 having the same shape as the mounting pieces 19C, 20C are screwed into the screw holes 18F, respectively. 27. Lifting mounting piece 2
5, 26 have a hole 28 for inserting the mounting screw 27 and a hole 29 for inserting the mounting screw 14A of the vibration isolating rubber 14,
When mounted on the holding frame 15 by being mounted with the mounting screw 27, both ends form lifting mounting portions 25 </ b> A and 26 </ b> A mounted on the vibration-proof rubber 14.

The holding frame 15 is provided with mounting screws 27.
The hydraulic pump 16 and the electric motor 1 mounted on the mounting portion 18 without mounting the mounting pieces 25 and 26
7 can be moved in and out of the tank through the upper opening 8 and the immersion mounting portions 21 and 22 of the mounting pieces 19C and 20C are mounted on the vibration isolating rubbers 14 in the receiving portions 11 and 12 of the tank 1 with mounting screws 14A. Is mounted on the tank 1 by inserting it into the hole 23 and mounting the lifting pieces 25 and 26 at this time.
A is inserted through the hole 29, is superimposed on the mounting pieces 19C and 20C, and is fixed together by a nut 30 screwed to the mounting screw 14A as shown in FIG. At this time, the hydraulic pump 16 and the electric motor 17 are immersed in the working fluid. The liquid level is indicated by L in FIG.

Reference numeral 31 denotes a manifold provided on the upper wall 7 of the tank 1. The manifold 31 has a discharge port 32, a drain port 33, and a return port 34 connected to the outside.
3. Drain pipe 3 connected to return port 34
5. The return pipe 36 is provided in the tank 1. Reference numeral 37 denotes a connection joint connected to the discharge port 32, which is provided through a partition plate 38 in the tank 1. The connection joint 37 has a flexible connection such as a hose connected to the discharge section of the hydraulic pump 16. Tube 39 is connected. Reference numerals 40 and 41 denote filters provided on the return pipe 36 and the suction portion of the hydraulic pump 16, respectively, and reference numeral 42 denotes an air breather / fuel filler plug.

The operation of the first embodiment will be described. As shown in FIG. 1, the hydraulic pump 16 is driven by an electric motor
The hydraulic fluid in the tank 1 is sucked into the hydraulic pump 16, discharged from the discharge port 32 from the flexible tube 39, sent to the consuming unit (not shown), and returned from the consuming unit to the return port. 34, return to the tank 1 via the return pipe 36. At this time, the noise generated by the electric motor 17 and the hydraulic pump 16 is attenuated by the working fluid, and the noise becomes very small.

When the hydraulic pump 16 or the electric motor 17 needs repair such as repair or replacement, the electric motor 17 is stopped and the holding frame 15 is pulled out of the tank. That is, the mounting screw 10 is removed, the lid 9 is removed, and the upper opening 8 is opened. Then, in each of the receiving portions 11 and 12, the nut 30 is removed, the lifting pieces 25 and 26 are removed, and then the hydraulic pump 16 and the electric motor 1 are moved by a hoist or other appropriate means.
7 and the holding frame 15 is pulled out of the tank 1. When the lifting placing pieces 25 and 26 are attached to both ends of the mounting portion 18 with the mounting screws 27 and mounted on the holding frame 15, the lifting placing pieces 25 and 26 form the lifting placing sections 25 A and 26 A on the holding frame 15. This hole 2
When the holding frame 15 is pulled down by inserting the mounting screw 14A of the vibration-proof rubber 14 through the mounting member 9, the lifting mounting portions 25A, 26
A is placed on the vibration isolating rubbers 14 of the receiving portions 11 and 12, and the holding frame 15 is mounted on the tank as shown in FIG. You. At this time, the nut 30 is screwed onto the mounting screw 14A of the vibration-proof rubber 14, and the
5 and 26 may be fixed to the anti-vibration rubber 14. At this time, since the hydraulic pump 16 and the electric motor 17 are exposed outside the tank 1, they can be removed and attached without any trouble.
It is not necessary to prepare a separate receiving member,
Repair work can be performed well. For this reason, even if it is difficult to secure a space for arranging the holding frame 15 around the tank 1 for repair due to the installation state of the tank 1, repair can be easily performed.

After the repair is completed, the holding frame 15 is pulled up, the mounting screws 27 are removed, the mounting pieces 25, 26 are removed from the holding frame 15, and then the holding frame 15 is pulled down to remove the immersion mounting portions 21, 22. After being mounted on the tank 1 by being mounted on the vibration isolating rubber 14, each of the lifting mounting pieces 25, 26
Is fixed on the mounting pieces 19C and 20C of the holding frame 15 together with the holding frame 15 by the nut 30 for storage.
Then, the lid 9 is attached again, and the upper opening 8 is closed. As described above, the lifted mounting piece is attached and stored in the tank 1 together with the holding frame 15, so that no extra storage space is required and there is no risk of loss.

FIGS. 9 to 11 show a second embodiment. First
The same parts as those in the embodiment are denoted by the same reference numerals, and different parts will be described. The mounting portions 18 of the holding frame 15 have metal fittings 18G and 18H which are mounted by welding, so that the mounting portions 43A, 43B and 44 are not located immediately below the receiving plates 13.
A and 44B are formed at both ends. And the holding frame 15
The mounting of the holding frame 15 from the inside of the tank 1
Is lifted upward, then moved to the side wall 5 side, and the mounting portions 43A, 43B, 44A, 44B are mounted on the respective vibration-isolating rubbers 14 through the mounting screws 14A through the holes 29. 11 are obtained. At this time, the nut 30 is screwed onto the mounting screw 14A and lifted.
3A, 43B, 44A, and 44B may be fixed on the vibration-proof rubber 14.

FIGS. 12 and 13 show a third embodiment, in which two lifting mounts 43A, 43B, 44A and 44B are formed at both ends of the mounting portion 18 of the holding frame 15 so as to protrude. When the holding frame 15 is pulled up from the inside, as shown by the imaginary line in FIG. 12, the holding frame 15 is moved toward the side wall 5 so that the receiving plates 13 do not come into contact with the mounting portions 43A, 43B, 44A, 44B. Holding frame 15
Is raised.

The above-described second and third embodiments also provide the same functions and effects as those of the first embodiment.

In each of the embodiments, when the holding frame is mounted on the tank in a lifted state, the electric motor and the hydraulic pump are partially located in the tank, and are not required to be completely out of the tank. It goes without saying that it is only necessary to be lifted to a position where there is no problem.

[0018]

As described above, according to the present invention, the holding frame can be mounted on the tank in a lifted state in which the hydraulic pump and the electric motor protrude out of the tank. The repair work can be performed without placing a holding frame around the tank, and the repair work can be easily performed even in a tank installation state where it is difficult to secure a space for disposing such a holding frame around the tank.

In addition, since the holding frame can be attached to the tank for the repair, the hydraulic fluid flowing out can be received by the tank when the hydraulic pump is disconnected, so that a special receiving member must be prepared. It has the feature that repair work is easy without it.

[Brief description of the drawings]

FIG. 1 shows a line 101-1 of FIG. 2 showing a first embodiment of the present invention.
Sectional view along 01.

FIG. 2 is a cross-sectional view taken along line 100-100 of FIG.

FIG. 3 is a plan view in which a part of the first embodiment of the present invention is broken.

FIG. 4 is an enlarged plan view of a holding frame according to the first embodiment of the present invention.

FIG. 5 is a left side view in FIG. 4;

FIG. 6 is a cross-sectional view taken along line 102-102 of FIG.

FIG. 7 is an enlarged plan view of the lifting mounting piece according to the first embodiment of the present invention.

FIG. 8 is a state diagram showing a lifted state in the first embodiment of the present invention.

FIG. 9 is a left side view with a part broken away showing a second embodiment of the present invention.

FIG. 10 is a partially cutaway plan view showing a second embodiment of the present invention.

FIG. 11 is a state diagram showing a lifted state in the second embodiment of the present invention.

FIG. 12 is a left side view showing a third embodiment of the present invention with a lid removed and a part cut away.

FIG. 13 is a partial cross-sectional view taken along line 103-103 of FIG. 12;

[Explanation of symbols]

1 tank 3, 4, 5, 6 side wall 8 upper opening 9 lid 11, 12 receiving part 15 holding frame 16 hydraulic pump 17 electric motor 21, 22 immersion mounting part 25, 26 lifting mounting piece 25A, 26A, 43A, 43B , 44A, 44B lifting receiver

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F15B 1/00 B66B 9/04 F04B 23/02

Claims (1)

(57) [Claims] 1. A tank having an upper opening closed by a lid and formed in a box shape and storing therein a hydraulic fluid sucked and discharged by a hydraulic pump, a hydraulic pump and an electric motor for driving the hydraulic pump are mounted on the tank. A holding frame formed so as to be able to move in and out of the tank through the opening, an upward receiving portion is provided on a side wall of the tank, and the holding frame is placed on the receiving portion for mounting the holding frame to the tank. An immersion mounting part formed on the holding frame and mounting the holding frame on the tank in a state where the hydraulic pump and the electric motor are immersed in the hydraulic fluid; and an immersion mounting part on the holding frame. And a lifting mounting portion formed at a position lower than the mounting portion and mounting the holding frame to the tank in a lifting state in which the hydraulic pump and the electric motor protrude out of the tank.