JPH04244602A - Hydraulic pressure source device - Google Patents

Abstract

PURPOSE:To dispense with a holding frame arranging space to be formed in the vicinity of a holding frame at the time of repairing by providing a constitution so that repairing work can be carried out in a state where a hydraulic pump and an electric motor are protruded outside a tank and a holding frame containing a specific placing piece is supported on the tank. CONSTITUTION:In a box-shape tank 1 having an upper opening 8 to be closed with a cover 9, a holding frame 15 having a horizontal mounting part 18 on which a hydraulic pump 16 and an electric motor 17 are to be mounted is arranged possible of being installed in and taken out of the tank 1 through the upper opening part 8. This holding frame 15 supports submerged placing parts 21, 22 of upper end placing pieces 19C, 20C of suspending-holding parts 19, 20 erected on both ends of the mounting part 18 by screw-fixing them to receiving parts 11, 12 via rubber vibration isolators 14 respectively. At each end lower part of the mounting part 18, two tapped holes are respectively provided and lifting placing pieces 25, 26 having the same shapes as 19C, 20C are detachably fitted with screws. Each of the placing] pieces 25, 26 is removed in the case of being submerged into an operating liquid of a pump and the like.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic power supply 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

[Prior Art] As a hydraulic pressure source device of this type, there is one described in Japanese Patent Application No. 2-291424 filed by the present applicant, in which a hydraulic pump and an electric motor for driving the same are in a common holding frame. The holding frame is attached to the tank with its end placed on a receiving part that protrudes inward from the upper side wall of the tank, and the holding frame is attached to the tank to operate the hydraulic pump and electric motor inside the tank. It is kept immersed in liquid.

0003

[Problems to be Solved by the Invention] However, with this device, when repairing or replacing the hydraulic pump or electric motor, the hydraulic pump and electric motor are removed from the tank together with the holding frame and placed in an appropriate place around the tank. , the hydraulic pump and electric motor must be removed and reinstalled, and depending on the installation condition of the tank, it may be difficult to secure space for placing the holding frame around the tank for such repairs, making it inconvenient to use. There was a point.

The present invention solves these problems by supporting a holding frame on the tank with the hydraulic pump and electric motor protruding outside the tank, and repair work can be carried out in this state. To provide a hydraulic source device that can eliminate the need for a holding frame installation space around a tank during repair.

[0005]

[Means for solving the problem] Therefore, in the present invention,
A box-shaped tank with an upper opening that is closed by a lid, and a tank that stores working fluid that is sucked and discharged by a hydraulic pump, a hydraulic pump and an electric motor that drives it, and these are installed inside and outside the tank through the upper opening. The tank has a holding frame formed to be removable and removable, and has an upwardly facing receiving part on the inner surface of the side wall of the tank, and the holding frame has a mounting part that is placed on the receiving part in order to attach the holding frame to the tank. The mounting section includes an immersion mounting section that is formed on the holding frame and attaches the holding frame to the tank with the hydraulic pump and electric motor immersed in the working fluid, and a lifting mounting piece that is attached to the holding frame. and a lifting mounting section that is formed at a lower position than the immersion mounting section and attaches the holding frame to the tank in a lifted state that causes the hydraulic pump and the electric motor to protrude out of the tank, and the lifting mounting piece is configured to hold the hydraulic pump and the electric motor. The motor is removably attached to the holding frame so that a lifting and mounting part is not formed when the motor is immersed in the working fluid.

[0006]

[Operation] According to this configuration, when the hydraulic pump and electric motor submerged in the hydraulic fluid in the tank require repair or replacement, the lid of the tank can be removed and the hydraulic pump and electric motor can be removed together with the holding frame. Pull it out of the tank from the upper opening,
Attach a lifting piece to the holding frame to form a lifting and placing part at a lower position than the immersion placing part, and then pull down the holding frame so that this lifting and placing part is placed on the receiving part of the tank. , the holding frame is attached to the tank with the hydraulic pump and electric motor protruding outside the tank. and,
In this case, all or most of the hydraulic pump and electric motor are located outside the tank, and even if some parts are located inside the tank, they are easily accessible near the upper opening of the tank. Repair work can be carried out without placing a holding frame around the tank, and there is no need to secure space for the holding frame on the same side of the tank.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a tank with side walls 3, 4, 5, and 6 erected around the four circumferences of a bottom wall 2 to form a rectangular parallelepiped box, with a part of the upper opening formed as an upper wall 7.
It is formed by covering it with The part not covered by the upper wall becomes the upper opening 8 of the tank 1, and 9 is a lid that covers the upper opening 8.
It is attached to the tank 1 with mounting screws 10. side wall 3
, 4 have two receiving parts 11 on their upper inner surfaces, respectively.
12 is formed upward facing the upper opening 8, and each receiving part 11, 12 has a receiving plate 13 horizontally fixed to the inner surface of the side walls 3, 4 by welding, and a shield attached to the upper surface of the receiving plate 13. The vibration isolating rubber 14 has a mounting screw 14A erected thereon.

Reference numeral 15 denotes a holding frame, which has a horizontal mounting part 18 to which a hydraulic pump 16 and an electric motor 17 are attached, and hanging parts 19 and 20 erected at both ends of the mounting part 18.
As shown in FIG.
It is framed using 0A and 20B and integrated by welding. Each of the hanging parts 19 and 20 has a mounting piece 19C at its upper end,
20C is fixed and provided so as to extend in the width direction. Immersion placement parts 21 and 22 are formed at the projecting ends of each of the placement pieces 19A and 20A, respectively, to be placed on the vibration isolating rubber 14 of each of the above-mentioned receiving parts 11 and 12.
23 is a hole through which the mounting screw 14A of each vibration isolating rubber 14 is inserted. The mounting portion 18 includes a flange 18D having a screw hole 18C for fixing the electric motor 17 to which the hydraulic pump 16 is integrally connected by screwing the mounting screw 24;
It has 18E. Two screw holes 18F are provided at the bottom of each end of the mounting frame 18, and the lifting and placing pieces 25 and 26, which have the same shape as the placing pieces 19C and 20C, are screwed into the screw holes 18F, respectively. 27 so that it can be attached. Lifting and placing piece 2
5 and 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 attaching with the mounting screws 27, both ends form lifting mounting portions 25A and 26A that are mounted on the vibration isolating rubber 14.

[0009]The holding frame 15 is attached to the mounting screw 27.
Hydraulic pump 16 and electric motor 1 are lifted and mounted on mounting portion 18 without mounting mounting pieces 25 and 26.
7, the immersion mounting parts 21 and 22 of the mounting pieces 19C and 20C, which can be entered and exited from the upper opening 8 into and out of the tank, are mounted on the anti-vibration rubber 14 of each receiving part 11 and 12 of the tank 1 with the mounting screw 14A. It is attached to the tank 1 by inserting it into the hole 23 and placing it there. At this time, the lifting and placing pieces 25 and 26 also need to be simply stored, so the mounting screws 14
A is inserted into the hole 29 and placed on top of the mounting pieces 19C and 20C, and is fixed together by a nut 30 screwed onto the mounting screw 14A as shown in FIG. 1. Note that at this time, the hydraulic pump 16 and the electric motor 17 are immersed in the working fluid. Note that the liquid level is indicated by L in FIG.

A manifold 31 is provided on the upper wall 7 of the tank 1, and has a discharge port 32, a drain port 33, and a return port 34 connected to the outside.
3. Drain pipes 35 each connected to the return port 34
, a return pipe 36 is provided within the tank 1. 37 is a connection joint connected to the discharge port 32, which is provided through the partition plate 38 in the tank 1, and this connection joint 37 includes:
A flexible pipe 3 such as a hose connected to the discharge part of the hydraulic pump 16
9 is connected. Note that 40 and 41 are filters provided in the return pipe 36 and the suction portion of the hydraulic pump 16, respectively, and 42 is an air breather and oil supply plug.

The operation of one embodiment will be described. The hydraulic pump 16 is driven by an electric motor 17 while immersed in the hydraulic fluid as shown in FIG. The hydraulic fluid that is sent to the consuming part that is not used and returned from the consuming part returns to the tank 1 through the return port 34 and the return pipe 36. At this time, the noise generated by the electric motor 17 and the hydraulic pump 16 is attenuated by the hydraulic fluid, and the noise becomes extremely small.

When the hydraulic pump 16 or the electric motor 17 requires 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, at each receiving portion 11, 12, the nut 3
After removing the lifting and mounting pieces 25 and 26, remove the hydraulic pump 16 and the electric motor 17 using an appropriate means such as a hoist.
At the same time, the holding frame 15 is pulled out of the tank 1. When the lifting and placing pieces 25 and 26 are attached to both ends of the attachment part 18 with the mounting screws 27 and attached to the holding frame 15, lifting and placing parts 25A and 26A are formed on the holding frame 15 by the lifting and placing pieces 25 and 26. and this hole 29
When the holding frame 15 is pulled down by inserting the mounting screw 14A of the vibration isolating rubber 14 into the
is placed on the vibration isolating rubber 14 of each receiving part 11, 12, and the holding frame 15 is attached to the tank as shown in FIG. . At this time, screw the nut 30 onto the mounting screw 14A of the anti-vibration rubber 14, lift and place the piece 25,
26 may be fixed to the vibration-proof rubber 14. At this time, the hydraulic pump 16 and the electric motor 17 are exposed outside the tank 1, so they can be removed and installed without any problem, and the hydraulic fluid flowing out by removing the flexible tube 39 can be received by the tank 1. Therefore, there is no need to prepare a separate receiving member, and repair work can be performed satisfactorily. For this reason, tank 1
Based on the installation status of tank 1, holding frame 1 was installed around tank 1 for repair.
Even when it is difficult to secure a space for arranging 5, repairs can be easily carried out.

After the repair is completed, pull up the holding frame 15, remove the mounting screws 27, lift and remove the mounting pieces 25 and 26 from the holding frame 15, and then pull down the holding frame 15 and remove the respective immersion mounting parts 21 and 22. After mounting on the tank 1 by placing it on the anti-vibration rubber 14, each lifting and placing piece 25, 26
are stacked on the mounting pieces 19C, 20C of the holding frame 15 for storage and fixed together with the holding frame 15 with nuts 30. Then, the lid 9 is attached again, and the upper opening 8 is closed. In this way, the lifting and placing piece is attached and stored in the tank 1 together with the holding frame 15, so no special storage space is required and there is no risk of it being lost.

[0014] When the holding frame is attached to the tank in a lifted state, the electric motor and hydraulic pump are partially located inside the tank, and even if they do not completely come out of the tank, they can be placed in a position that does not interfere with repair work. Needless to say, it would be good if it could be lifted up.

[0015]

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 electric motor protrude outside the tank, and when the hydraulic pump and electric motor are repaired, Repair work can be performed without placing a holding frame around the tank, and even when the tank is installed in a state where it is difficult to secure space for arranging such a holding frame around the tank, repair work can be easily performed. In addition, the lifting and mounting piece for raising the holding frame in such a lifted state is removable from the holding frame and is attached only when raising the holding frame, so the hydraulic pump and electric motor are held so that they are immersed in the working fluid. When attaching the frame or pulling out the holding frame from this state, it is only necessary to perform a simple operation of simply moving the holding frame downward or upward in the vertical direction, which makes it easy to handle.

[Brief explanation of the drawing]

FIG. 1: Line 101-10 in FIG. 2 showing one embodiment of the present invention.
FIG. 1 is a sectional view along line 1;

2 is a cross-sectional view taken along line 100-100 of FIG. 1. FIG.

FIG. 3 is a partially cutaway plan view of an embodiment of the present invention.

FIG. 4 is an enlarged plan view of a holding frame in one embodiment of the present invention.

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

6 is a cross-sectional view taken along line 102-102 of FIG. 5. FIG.

FIG. 7 is an enlarged plan view of a lifting and placing piece in one embodiment of the present invention.

FIG. 8 is a state diagram showing a lifting state in an embodiment of the present invention.

[Explanation of symbols]

1 tank 3, 4, 5, 6 side walls 8 upper opening 9 lids 11, 12 receiving part 15 holding frame 16 hydraulic pump 17 electric motor 21, 22 Immersion placement part 25, 26 Lifting and placing piece 25A, 26A lifting section

Claims (1)

[Claims] Claim 1: A tank formed in a box shape with an upper opening closed by a lid, in which a hydraulic pump stores a hydraulic fluid to be sucked and discharged by a hydraulic pump, and a hydraulic pump and an electric motor for driving the tank are installed. It has a holding frame that is formed to be able to go in and out of the tank through an opening, and has an upwardly facing receiving part on the inner surface of the side wall of the tank, and the holding frame has a mounting frame that is placed on the receiving part in order to attach the holding frame to the tank. The mounting part includes an immersion mounting part that is formed on the holding frame and allows the holding frame to be attached to the tank with the hydraulic pump and the electric motor immersed in the working fluid; The lifting mounting piece includes a lifting mounting part that is formed at a lower position than the immersion mounting part and attaches the holding frame to the tank in a lifted state that causes the hydraulic pump and the electric motor to protrude outside the tank. refers to a hydraulic pressure source device that is removably attached to a holding frame so that a lifting and mounting part is not formed when the hydraulic pump and electric motor are immersed in a working fluid.