JPH0640401U - Hydraulic pressure source device - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the influence of the discharge pipe on the extraction work for taking out the hydraulic pump immersed in the working fluid stored in the tank to the outside of the tank for maintenance and inspection and the piping work of the discharge pipe. What you can do. [Constitution] The working fluid discharged from the hydraulic pump 24 is stored in the tank 1.
1. The discharge pipe 34 that supplies the fluid to the outside connects between the hydraulic pump 24 and the connecting member 40 that is fixed to the support member 37 that is fixed to the lower surface of the second upper plate 26 of the tank 11 via the vibration isolating member 38. First discharge pipe 35, connecting member 40, and manifold 29
The second discharge pipe 36 connecting between the hydraulic pump 2
In the extraction work of No. 4, the first discharge pipe 35 can be shortened without being affected by the second discharge pipe 36 and it is difficult to get in the way, and the piping work of the second discharge pipe 36 is not performed every time this extraction work is performed. The piping work of the first discharge pipe 35, which is short and easy to handle, can be easily performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hydraulic pressure source device in which a hydraulic pump that sucks and discharges hydraulic fluid and an electric motor that drives the hydraulic pump are integrally provided, and are immersed in a working fluid stored in a tank.

[0002]

[Prior art]

 As a hydraulic pressure source device of this type, there is a device shown in FIG. 3 which the applicant has already applied for. In this device, the electric motor 1 and the hydraulic pump 2 are immersed in the working fluid stored in the tank 3, and the hydraulic pump 2 is driven by the electric motor 1 to suck the working fluid from the suction pipe 4 and to discharge it. 5, the hydraulic fluid discharged from the hydraulic pump 2 flows from the discharge pipe 5 to the discharge port 8 of the manifold 7 serving as a fixed part of the tank fixed to the upper plate 6 of the tank 3 and the external hydraulic pressure not shown. The hydraulic fluid supplied to the equipment and returned from the hydraulic equipment is provided so as to flow from the return port 9 through the return pipe 10 and be returned to the tank 3. The discharge pipe 5 is made of a flexible pipe made of rubber, resin, or the like in order to prevent the propagation of vibration caused by pressure pulsation of the hydraulic fluid flowing inside, and the position where the electric motor 1 and the hydraulic pump 2 are arranged. Due to the above, the fluid pressure pump 2 and the manifold 7 are connected in a bent shape.

[0003]

[Problems to be solved by the device]

 However, in such a configuration, since the discharge pipe 5 is provided in a bent shape and is connected between the hydraulic pump 2 and the manifold 7, the length thereof becomes long and the piping work which is difficult to handle may be troublesome. However, when the hydraulic pump 2 is taken out of the stored hydraulic fluid in the tank 3 for maintenance and inspection to the outside of the tank 3, there is a problem that the long discharge pipe 5 becomes an obstacle and the take-out work becomes difficult. . The present invention solves such a problem, and a discharge pipe for supplying the hydraulic fluid discharged from the hydraulic pump to the outside is provided in a divided structure so that the influence of the discharge pipe on various works can be reduced. A hydraulic pressure source device is provided.

[0004]

[Means for Solving the Problems]

 For this reason, the present invention has a tank in which the hydraulic fluid can be stored, and a hydraulic pump for sucking and discharging the hydraulic fluid and an electric motor for driving the hydraulic pump are integrally provided in the tank. The tank is equipped with a discharge pipe that supplies the hydraulic fluid discharged from the hydraulic pump to the outside of the tank and a support member that supports the discharge pipe inside the tank. It is composed of a first discharge pipe connecting between the connecting members fixed to the supporting member and a second discharge pipe connecting between the connecting member and the fixed portion of the tank, and at least the first discharge pipe of the discharging pipe is connected to the connecting member. The support member is detachably provided, and the support member is fixed to the tank via a vibration isolating member having a vibration isolating function.

[0005]

[Action]

 In the structure of the present invention, the discharge pipe for supplying the hydraulic fluid discharged from the hydraulic pump to the outside of the tank is the first discharge pipe for connecting between the hydraulic pump and the connecting member fixed to the support member, and this connecting pipe. Since it is configured by the second discharge pipe that connects the member and the fixed part of the tank, it is the first method to take out the hydraulic pump from the stored hydraulic fluid in the tank to the outside of the tank for maintenance and inspection. It suffices to separate the discharge pipe from the connecting member, and the second discharge pipe does not affect this extraction work, and the piping work for the second discharge pipe does not have to be performed each time the hydraulic pump is taken out. For this reason, the first discharge pipe, which affects the removal of the hydraulic pump from the stored hydraulic fluid in the tank to the outside of the tank for maintenance and inspection, can be shortened because it connects the hydraulic pump and the connecting member. It is possible to simplify the piping work of the first discharge pipe, which is short and easy to handle each time it is taken out, and it is possible to satisfactorily reduce the influence of the discharge pipe on various works.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 11 denotes a tank, which is formed in the shape of a rectangular parallelepiped box having an opening at the top, and is provided therein so that the working fluid can be stored. L1 is the liquid level of the working fluid stored in the tank 11. Reference numerals 12 and 13 denote receiving plates fixed to the inner surface of the upper side wall of the tank 11 by welding, and two anti-vibration rubbers 14 are attached to the upper surfaces thereof. Reference numeral 15 denotes a suspension frame, which is a pair of horizontal bases 16 and 17 arranged in parallel with a space therebetween, and mounting portions 18 and 19 which are fixed to both ends of the bases 16 and 17 by welding so as to project in the longitudinal direction. And the mounting portions 20 and 21 fixed to the lower ends of the base portions 16 and 17 by welding, respectively. Then, the mounting portions 18, 19 of the suspension frame 15 are mounted on the respective vibration isolating rubbers 14 and detachably fixed by the mounting screws 22A, so that the mounting portions 20, 21 are inserted into the tank 11. It is immersed in the working fluid of storage. Reference numeral 22 denotes an electric motor, which is fixed to the lower ends of the mounting portions 20 and 21 of the suspension frame 15 by mounting screws 23 and immersed in the working fluid. A hydraulic pump 24 is driven by the electric motor 22 and sucks and discharges the hydraulic fluid. The hydraulic pump 24 is integrally connected to the electric motor 22 and is immersed in the hydraulic fluid. Reference numeral 25 denotes a first upper plate that is detachably fixed to the tank 11 and is provided so as to close the upper opening of the tank 11, and when detached from the tank 11, the electric motor 22 and the hydraulic pump 24 are suspended. Along with this, the size is set so that it can be taken out of the tank 11. Reference numeral 26 denotes a second upper plate that is fixedly attached to the tank 11, and is provided by closing the remaining portion that is closed by the first upper plate 25 at the upper opening of the tank 11.

A suction pipe 27 is connected to the hydraulic pump 24, and has a strainer 28 at its tip. Reference numeral 29 denotes a manifold serving as a fixed portion of the tank, which is fixedly provided on the second upper plate 26 and has a supply port 30, a return port 31, and a drain port 32 so as to be connected to an external hydraulic device (not shown). ing. Reference numeral 33 is a return pipe that hangs from the lower surface of the manifold 29 so as to communicate with the return port 31 and has its tip immersed in the working fluid stored in the tank 11. Although not shown, the manifold 29 is provided with a drain pipe that hangs down from its lower surface so as to communicate with the drain port 32. Reference numeral 34 denotes a discharge pipe for supplying the hydraulic fluid discharged from the hydraulic pump to the outside of the tank 11. The discharge pipe 34 is provided inside the tank 11 and is composed of a first discharge pipe 35 and a second discharge pipe 36. Each has a connecting part at both ends of a flexible tube made of rubber or resin. Reference numeral 37 denotes an inverted L-shaped support member that supports the discharge pipe 34, and is fixed to the lower surface of the second upper plate 26 by a mounting screw 39 via a vibration-proof member 38 made of a vibration-proof rubber having a vibration-proof effect. It is provided so as to hang from the lower surface of the second upper plate 26, and its tip is immersed in the working liquid for storage in the tank 11. Reference numeral 40 denotes a cylindrical connecting member that is fixed to the tip of the supporting member 37. The connecting portion of the first discharge pipe 35 and the connecting portion of the second discharge pipe 36 are attached to and detached from both axial ends of the supporting member 37. It is provided freely. The first discharge pipe 35 is provided by connecting between the hydraulic pump 24 and the connecting member 40, and the second discharge pipe 36 is provided by connecting between the connecting member 40 and the manifold 29, and is connected to the manifold 29. The discharge pipe 36 communicates with the supply port 30.

Next, the operation of this configuration will be described. As shown in the figure, the hydraulic pump 24 is driven by the electric motor 22 while being immersed and placed in the working fluid stored in the tank 11, and the working fluid stored in the tank 11 is sucked into the hydraulic pump 24 by the suction pipe 27. The hydraulic fluid discharged from the hydraulic pump 24 flows through the first discharge pipe 35 of the discharge pipe 34, the connecting member 40, and the second discharge pipe 36, and is supplied from the supply port 30 of the manifold 29 to an external hydraulic device (not shown). The hydraulic fluid returned from the hydraulic device flows from the return port 31 through the return pipe 33 and flows back into the tank 11. Then, when the electric motor 22 is stopped, the hydraulic pump 24 does not suck and discharge the hydraulic fluid.

In order to take out the hydraulic pump 24 immersed in the working fluid stored in the tank 11 to the outside of the tank 11 for maintenance and inspection, the first upper plate 25 is detached from the tank 11 to remove the tank 11. If the first discharge pipe 35 is detached from the connecting member 40 while the upper opening of the valve is unblocked and the suspension frame 15 is not fixed by the mounting screw 22, the hydraulic pump 24 is connected to the electric motor 22 and the suspension 22. It can be taken out of the tank 11 integrally with the frame 15, the second discharge pipe 36 can be prevented from affecting this taking-out work, and the piping work of the second discharge pipe 36 is carried out every time the taking-out work of the hydraulic pump 24 is carried out. You don't have to. Therefore, the first discharge pipe 35 that influences when the hydraulic pump 24 is taken out of the stored hydraulic fluid in the tank 11 for maintenance and inspection to the outside of the tank 11 connects the hydraulic pump 24 and the connecting member 40. Since it can be shortened, it does not hinder the extraction work, and the piping work of the short and easy-to-use first discharge pipe 35, which is performed each time this extraction work is performed, can be simplified, and the influence of the discharge pipe 34 on various works is good. Can be reduced to Further, since the support member 37 for fixing the connecting member 40 to support the discharge pipe 34 is fixed to the second upper plate 26 of the tank 11 via the vibration isolating member 38, the discharge pipe 34 is well supported. It is possible to favorably obtain the action and prevent the propagation of the vibration caused by the pressure pulsation of the hydraulic fluid flowing through the discharge pipe 34 to the tank 11.

Although not shown, the drain pipe from the hydraulic pump 24 is supported by a supporting member 37 and connected to a cooler arranged on the second upper plate 26 of the tank 11 to remove the drain liquid flowing through the drain pipe. It may be provided so as to be cooled and refluxed in the tank 11.

[0011]

[Effect of device]

 As described above, the present invention has a tank in which hydraulic fluid can be stored, and a hydraulic pump that sucks and discharges hydraulic fluid and an electric motor that drives the hydraulic pump are integrated in the tank. Provided inside the tank with a discharge pipe for supplying the hydraulic fluid discharged from the hydraulic pump to the outside of the tank and a supporting member for supporting the discharge pipe inside the tank. The first discharge pipe connecting between the pressure pump and the connecting member fixed to the support member and the second discharge pipe connecting between the connecting member and the fixed portion of the tank, and at least the first discharge pipe of the discharging pipe. The pipe is removably attached to the connecting member, and the support member is fixed to the tank via a vibration isolating member that has an anti-vibration function, so that the hydraulic pump can be stored in the tank for maintenance inspection. The 1st discharge pipe that affects when taking it out of the tank is hydraulic pressure It can be shortened by connecting the pump and the connecting member, and it is not a hindrance to the take-out work. At the same time, the short and easy-to-handle piping work of the first discharge pipe that is performed every time this take-out work can be done easily, The influence of the discharge pipe can be satisfactorily reduced. Further, since the supporting member that fixes the connecting member to support the discharge pipe is fixed to the tank through the vibration isolating member, a good supporting function of the discharge pipe can be obtained and the discharge pipe can flow. This has the effect of being able to favorably prevent the transmission of vibrations due to the pressure pulsation of the working fluid to the tank.

[Brief description of drawings]

1 shows an embodiment of the present invention, (A) is a vertical sectional view of a hydraulic pressure source device, and (B) is a sectional view taken along line BB of (A).

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

FIG. 3 is a vertical cross-sectional view of a conventional hydraulic pressure source device.

[Explanation of symbols]

 11 Tank 22 Electric Motor 24 Hydraulic Pump 34 Discharge Pipe 35 First Discharge Pipe 36 Second Discharge Pipe 37 Support Member 38 Anti-Vibration Member 40 Connection Member

Claims (1)

[Scope of utility model registration request] 1. A storage device having a tank capable of storing a working fluid therein, wherein a hydraulic pump for sucking and discharging the working fluid and an electric motor for driving the hydraulic pump are integrally provided inside the tank for storage. The tank is provided with a discharge pipe which is disposed in the hydraulic fluid and supplies the hydraulic fluid discharged from the hydraulic pump to the outside of the tank, and a support member which supports the discharge pipe, and the discharge pipe is the hydraulic pump and the supporting member. The first discharge pipe connecting between the connecting members fixed to the second discharge pipe connecting between the connecting member and the fixed portion of the tank, and at least the first discharge pipe of the discharge pipe is detachable from the connecting member. And a support member fixed to the tank via a vibration isolating member having a vibration isolating effect.