JP6466674B2 - Hydraulic device - Google Patents

Description

  The present invention includes an oil tank that stores hydraulic oil, a hydraulic pump that sucks and discharges the stored hydraulic oil, and an electric motor that rotationally drives the hydraulic pump, and the amount of stored hydraulic oil is visually recognized on a side plate of the oil tank. The present invention relates to a hydraulic apparatus provided with an oil level gauge.

  In this type of hydraulic device, an electric motor that rotationally drives a hydraulic pump fixed to one side is placed on the upper plate of an oil tank that stores hydraulic oil, and the amount of stored hydraulic oil is visually recognized on the side plate of the oil tank. A hydraulic gauge is provided to suck and discharge the hydraulic oil stored in the oil tank by the rotation of the hydraulic pump. The discharged hydraulic oil is supplied to the actuator and the hydraulic oil returning from the actuator is returned to the oil tank. .

JP 2008-39021 A

  However, in such a conventional hydraulic apparatus, the oil level gauge provided on the side plate of the oil tank is exposed to the outside of the oil tank. Therefore, when the hydraulic apparatus is installed in a large facility, the oil level gauge is adjacent to the equipment. There was a risk that the oil level gauge could be damaged by hitting a tool or accidentally hitting a tool during maintenance of the hydraulic system.

  An object of the present invention is to provide a hydraulic device that can prevent an oil level gauge that visually recognizes the amount of stored hydraulic oil in an oil tank from colliding with other members and being damaged.

In order to achieve this problem, the present invention has taken the following measures. That is,
An oil tank that stores hydraulic oil, a hydraulic pump that sucks and discharges the stored hydraulic oil, and an electric motor that rotationally drives the hydraulic pump, and an oil supply port that supplies hydraulic oil is provided on the upper plate of the oil tank. An oil supply port member that is opened is provided, an oil level gauge that visually recognizes the amount of stored hydraulic oil is provided on the side plate of the oil tank, an oil level gauge protection member that protects the oil level gauge is provided on the oil tank, and an oil level gauge protection member Is open in the front direction to visually check the stored hydraulic oil amount of the oil level gauge, the back direction facing the front direction of the oil level gauge, and one side direction substantially orthogonal to the front direction and the back direction of the oil level gauge And a side surface direction of the other side surface and the other side surface direction is covered with the oil tank side plate, and further has a fourth side plate covering the upper side of the oil level gauge, the fourth side plate has a mounting portion extending, this mounting detachably the attachment portion to the fuel supply port member Hydraulic apparatus according to claim is it.

  In this case, the oil level gauge protecting member has a first side plate that covers one side surface direction of the oil level meter and a second side plate that covers the other side surface direction, and the back direction of the oil level meter is You may cover with the side plate of an oil tank.

  The oil level gauge protecting member has a first side plate that covers one side surface direction of the oil level meter, and a third side plate that covers a back surface direction of the oil level meter, and the other side of the oil level meter. The side surface direction may be covered with a side plate of the oil tank.

Further, the oil level gauge protective member, the said fourth side plate in said first side plate and said second side plate, or may be joined and the third side plate and said first side plate.

As described above in detail, in the invention described in claim 1, the oil tank is provided with an oil level gauge protecting member that protects the oil level gauge, and the oil level gauge protecting member determines the stored hydraulic oil amount of the oil level gauge. The front direction to be visually recognized is opened, the back direction facing the front direction of the oil level gauge, the one side direction substantially orthogonal to the front direction and the back direction of the oil level gauge, and the other side facing the one side direction. It provided in the shape which covers three directions with a side direction with the side plate of an oil tank. For this reason, since the oil level gauge protection member and the side plate of the oil tank cover one side surface direction, the other side surface direction, and the back surface direction of the oil level gauge, the oil level meter may collide with other members and be damaged. Can be prevented. Moreover, the oil level gauge protection member had the 4th side plate which covers the upper part of an oil level gauge. For this reason, it can prevent more reliably that an oil level gauge collides with another member and is damaged. Further, the oil level gauge protecting member has an attachment portion extending from the fourth side plate, and this attachment portion is detachably attached to the oil supply port member. For this reason, since the oil level gauge protecting member can be attached later to an existing oil tank as necessary, it is possible to increase the number of oil tanks. Also, since the mounting part for the oil level gauge protection member is attached to the oil tank filler port member, there is no need to provide a special mounting member for attaching the oil level gauge protection member to the oil tank, and the number of parts of the oil tank increases. You can do it. Furthermore, since the oil level gauge protection member has the attachment portion using the fourth side plate, it is not necessary to provide the attachment portion specially, and the number of parts of the oil level gauge protection member can be increased.

  Moreover, in addition to the effect of the invention described in claim 1, the oil level gauge protecting member includes a first side plate covering one side surface direction of the oil level gauge and the other side surface direction. The oil tank was covered with the side plate of the oil tank. For this reason, the oil level gauge protecting member may have two side plates of the first side plate and the second side plate, and the configuration can be simplified.

  In addition to the effect of the invention described in claim 1, the oil level gauge protecting member includes a first side plate that covers one side surface direction of the oil level gauge, and a back surface of the oil level gauge. The other side surface direction of the oil level gauge was covered with the side plate of the oil tank. For this reason, the oil level gauge protecting member may have two side plates of the first side plate and the third side plate, and the configuration can be simplified.

According to a fourth aspect of the present invention, in addition to the effects of the second and third aspects of the invention, the oil level gauge protecting member includes a first side plate and a second side plate on the fourth side plate, or a first side plate. And the third side plate were joined. For this reason , since the first side plate and the second side plate are joined by the fourth side plate, or the first side plate and the third side plate are joined by the fourth side plate, the oil level gauge protecting member joins the three side plates to each other. Thus, the strength can be improved.

1 is a perspective view of a hydraulic apparatus showing an embodiment of the present invention. It is a front view of FIG. It is a right view of FIG. It is a top view of FIG. It is a perspective view of the hydraulic apparatus which showed other embodiment of this invention. FIG. 6 is a right side view of FIG. 5.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 4, reference numeral 1 denotes an oil tank that stores hydraulic oil therein, and a first side plate 1A, a second side plate 1B, a third side plate 1C, and a fourth side plate 1D are erected from the bottom plate 1E. In addition, it is formed in a substantially rectangular parallelepiped shape having an upper portion opened. Reference numeral 2 denotes an upper plate that closes the upper opening of the oil tank 1 and is detachably attached to the oil tank 1. Reference numeral 3 denotes an electric motor that rotationally drives the hydraulic pump 4 and is mounted and fixed on the upper plate 2 via a plurality of buffer members 5. The hydraulic pump 4 is fixed to one side of the electric motor 3 on the upper plate 2, and the stored hydraulic oil in the oil tank 1 is sucked from the suction pipe 4 </ b> A by the rotational drive of the electric motor 3 and discharged from the discharge path 4 </ b> B. 4B is connected to an actuator (not shown). Return hydraulic oil from an actuator (not shown) is returned to the oil tank 1 through the return path 6. A pressure gauge 7 displays the discharge pressure of the hydraulic pump 4 and is connected to the discharge path 4B of the pump 4 by a pressure gauge mounting member 7A, and the front direction is directed to the first side plate 1A of the oil tank 1.

  Reference numeral 10 denotes an oil supply port member that opens an oil supply port for supplying hydraulic oil into the oil tank 1, and is disposed on the upper plate 2. Reference numeral 11 denotes a lid member which is detachably attached to the oil filler port member 10 and closes the oil filler port. An oil level gauge 8 visually recognizes the amount of hydraulic oil stored from the front direction, and is provided in contact with the first side plate 1A of the oil tank 1 in the back direction facing the front direction. 9 is an oil level gauge protecting member that protects the oil level gauge 8. The first side plate 9 </ b> A that opens in the front direction of the oil level gauge 8 and covers one side surface direction substantially orthogonal to the front direction and the back direction, The second side plate 9B covering the other side surface direction opposite to the side surface direction, a fourth side plate 9C covering the upper side of the oil level gauge 8, and a fifth side plate 9D covering the lower side of the oil level gauge 8, It is provided in a shape that covers four directions of one side surface direction, the other side surface direction, and an upper side and a lower side of the surface meter 8. The back surface direction of the oil level gauge 8 is covered with the first side plate 1 </ b> A of the oil tank 1. The oil level gauge protecting member 9 is formed by bending both sides of a single plate-like member to integrally form the first side plate 9A, the second side plate 9B, and the fifth side plate 9D, and covers the upper side of the oil level gauge 8. The upper end of the first side plate 9A and the upper end of the second side plate 9B are joined to the 4-side plate 9C by welding fixation. The oil level gauge protecting member 9 has a mounting portion 9E extending in the horizontal direction of the fourth side plate 9C. The mounting portion 9E is sandwiched between the upper plate 2 and the fuel filler member 10 and is attached to the fuel filler member 10. The oil level gauge protecting member 9 is fixed to the oil tank 1 in a detachable manner.

  Below the first side plate 1A of the oil tank 1, there is provided a plug member 12 for detachably closing a discharge port for discharging stored hydraulic oil. On the upper plate 2 of the oil tank 1, a plurality of hook members 13 for lifting and moving the device and the drain of the hydraulic pump 4 are introduced from the drain introduction conduit 14 and cooled, and the cooled drain is drained out A cooler 16 that recirculates from the passage 15 to the oil tank 1 is provided. Reference numeral 17 denotes a cooler filter that prevents the cooler from being clogged with dust or the like, and is sandwiched between the cooler 16 and a cooler mounting member 18 disposed on the upper plate 2 and is detachably mounted. Reference numeral 19 denotes an oil receiver that accommodates hydraulic oil leaked from the pump 4, and the oil tank 1 is detachably attached thereto. The oil receiver 19 is provided with two inverted L-shaped tank mounting portions 19A standing on the oil receiving bottom portion 19C. By attaching the bottom plate 1E of the oil tank 1 to the tank mounting portion 19A, the bottom plate 1E of the oil tank 1 is attached. And an oil receiving bottom 19C.

Next, the operation of this configuration will be described.
When the discharge path 4B is connected to an actuator (not shown) and the hydraulic pump 4 is driven to rotate by the electric motor 3, the hydraulic pump 4 sucks the hydraulic oil stored in the oil tank 1 from the suction pipe 4A and discharges it to the discharge path 4B. The discharged hydraulic oil is supplied to an actuator (not shown), and the return oil from the actuator returns to the oil tank 1 through the return path 6. At this time, the oil level gauge 8 displays the amount of hydraulic oil stored in the oil tank 1.

  With this operation, the oil tank 1 is provided with an oil level gauge protection member 9 that protects the oil level gauge 8, and the oil level gauge protection member 9 opens a front direction in which the stored hydraulic oil amount of the oil level gauge 8 is visually recognized. In addition, a back direction opposite to the front direction of the oil level gauge 8, one side direction substantially orthogonal to the front direction and the back direction of the oil level gauge 8, and the other side direction opposite to the one side direction. The three directions were provided so as to be covered with the first side plate 1 </ b> A of the oil tank 1. For this reason, since the oil level gauge protecting member 9 and the first side plate 1A of the oil tank 1 cover one side surface direction, the other side surface direction, and the back surface direction of the oil level gauge 8, the oil level meter 8 It can be prevented from colliding with a member and being damaged.

  The oil level gauge protecting member 9 includes a first side plate 9A that covers one side surface direction of the oil level meter 8 and a second side plate 9B that covers the other side surface direction opposite to the one side surface direction. The back direction of the surface gauge 8 was covered with the first side plate 1 </ b> A of the oil tank 1. For this reason, the oil level gauge protecting member 9 may have two side plates of the first side plate 9A and the second side plate 9B, and the configuration can be simplified.

The oil level gauge protection member 9 has a fourth side plate 9C covering the side of the oil level gauge 8, to join the first side plate 9A in the fourth plate 9C and the second side plate 9B. For this reason, since the upper part of the oil level gauge 8 is covered with the fourth side plate 9C, it is possible to more reliably prevent the oil level gauge 8 from colliding with other members and being damaged. Moreover, since the first side plate 9A and the second side plate 9B are joined by the fourth side plate 9C, the oil level gauge protecting member 9 can improve the strength by joining the three side plates to each other.

  The oil tank 1 is provided with an oil supply port member 10 having an oil supply port for supplying hydraulic oil to the upper plate 2 of the oil tank 1, and the oil level gauge protecting member 9 has an attachment portion 9E extending from the fourth side plate 9C. And this attachment part 9E was attached to the fuel filler member 10 so that attachment or detachment was possible. For this reason, the oil level gauge protecting member 9 can be attached later to the existing oil tank 1 as necessary, and therefore the number of types of the oil tank 1 can be increased. Further, since the mounting portion 9E of the oil level gauge protecting member 9 is attached to the oil filler port member 10 of the oil tank 1, there is no need to provide a special mounting member for attaching the oil level gauge protecting member 9 to the oil tank 1. This can be done without increasing the number of parts of the tank 1. Furthermore, since the oil level gauge protection member 9 has the attachment portion 9E using the fourth side plate 9C, it is not necessary to provide a special attachment portion, and the number of parts of the oil level gauge protection member 9 is not increased. it can.

  Further, the oil level gauge protecting member 9 has a fifth side plate 9 </ b> D that covers the lower side of the oil level gauge 8. For this reason, the lower part of the oil level gauge 8 can be covered with the fifth side plate 9D, and the oil level gauge 8 can be more reliably prevented from colliding with other members and being damaged. Further, the fifth side plate 9D covering the lower side of the oil level gauge 8 was joined to the first side plate 9A and the second side plate 9B by integral formation. For this reason, since the oil level gauge protecting member 9 joins the four side plates of the first side plate 9A, the second side plate 9B, the fourth side plate 9C, and the fifth side plate 9D, the strength can be further improved.

  The cooler filter 17 is detachably provided by being sandwiched between the cooler 16 and a cooler mounting member 18 disposed on the upper plate 2. For this reason, since the cooler filter 17 can be attached later to the existing cooler 16 as necessary, the number of types of coolers 16 can be increased. An oil receiver 19 that stores hydraulic oil leaked from the pump 4 is detachably attached to the bottom plate 1 </ b> E of the tank 1. For this reason, since the oil receiver 19 can be attached later to the existing oil tank 1 as necessary, the number of types of the oil tank 1 can be increased. Further, the oil receiver 19 has a tank mounting portion 19A, and a gap is provided between the bottom plate 1E of the oil tank 1 and the oil receiving bottom portion 19C by mounting the bottom plate 1E of the oil tank 1 to the tank mounting portion 19A. For this reason, since the hydraulic oil can be stored in the gap between the bottom plate 1E of the oil tank 1 and the oil receiving bottom portion 19C of the oil receiver 19, the bottom plate 1E of the oil tank 1 is directly attached to the oil receiving bottom portion 19C of the oil receiver 19. More leaked hydraulic oil can be accommodated compared to the tank.

5 and 6 show another embodiment of the present invention. The same portions as those of the embodiment are denoted by the same reference numerals, the description thereof is omitted, and only different portions will be described.
The oil level gauge 8 is attached to the first side plate 1A of the oil tank 1 via a block member (not shown) with the other side face directed. The oil level gauge 8 faces the front direction toward the second side plate 1B of the oil tank 1. The pressure gauge 7 is connected to the discharge passage 4 </ b> B of the pump 4 by a pressure gauge attachment member 7 </ b> B, and the front direction is directed to the second side plate 1 </ b> B of the oil tank 1, similarly to the oil level gauge 8. The oil level gauge protecting member 20 opens the front direction of the oil level gauge 8, and covers a first side plate 20 </ b> A that covers one side direction of the oil level gauge 8, and a third side plate 20 </ b> B that covers the back direction of the oil level gauge 8. And a fourth side plate 20 </ b> C covering the upper side of the oil level gauge 8, and is provided in a shape that covers three directions of one side direction, the back side direction, and the upper side of the oil level gauge 8. The other side surface direction of the oil level gauge 8 is covered with the first side plate 1 </ b> A of the oil tank 1. The oil level gauge protecting member 20 is formed by bending a single plate-like member into a substantially L shape, integrally forming the first side plate 20A and the third side plate 20B, and covering the upper side of the oil level gauge 8 The upper end of the first side plate 20A and the upper end of the third side plate 20C are joined to 20C by welding fixation. The oil level gauge protecting member 20 extends in the horizontal direction of the fourth side plate 20C and has an attachment portion 20D. The attachment portion 20D is sandwiched between the upper plate 2 and the oil supply port member 10 and is connected to the oil supply port member 10. The oil level gauge protection member 20 is fixed to the oil tank 1 in a detachable manner.

  As in the embodiment, the oil tank 1 is provided with an oil level gauge protection member 20 that protects the oil level gauge 8, and the oil level gauge protection member 20 visually recognizes the stored hydraulic oil amount of the oil level gauge 8. The front direction of the oil level gauge 8 is opened, the back direction facing the front direction of the oil level gauge 8, one side direction substantially orthogonal to the front direction and the back direction of the oil level gauge 8, and the other facing the one side direction. The side surface direction is provided in a shape that covers the first side plate 1 </ b> A of the oil tank 1. For this reason, since the oil level gauge protecting member 20 and the first side plate 1A of the oil tank 1 cover one side surface direction, the other side surface direction, and the back surface direction of the oil level gauge 8, the oil level gauge 8 It can be prevented from colliding with a member and being damaged.

  The oil level gauge protecting member 20 includes a first side plate 20A that covers one side surface direction of the oil level gauge 8 and a third side plate 20B that covers the back surface direction of the oil level gauge 8. The other side surface direction was covered with the first side plate 1 </ b> A of the oil tank 1. For this reason, the oil level gauge protecting member 20 may have two side plates of the first side plate 20A and the third side plate 20B, and simplification of the configuration can be achieved.

  Further, the oil level gauge protecting member 20 has a fourth side plate 20C covering the upper side of the oil level gauge 8, and the first side plate 20A and the third side plate 20B are joined by the fourth side plate 20C. For this reason, since the upper part of the oil level gauge 8 is covered with the fourth side plate 20C, it is possible to more reliably prevent the oil level gauge 8 from colliding with other members and being damaged. Further, since the first side plate 20A and the third side plate 20B are joined by the fourth side plate 20C, the oil level gauge protecting member 20 can improve the strength by joining the three side plates to each other.

  An oil filler member 10 having an oil filler opening for supplying hydraulic oil is provided on the upper plate 2 of the oil tank 1, and the oil level gauge protecting member 20 has a mounting portion 20D extending from the fourth side plate 20C. And this attachment part 20D was attached to the fuel filler member 10 so that attachment or detachment was possible. For this reason, since the oil level gauge protecting member 20 can be attached later to the existing oil tank 1 as necessary, the type of the oil tank 1 can be increased. Further, since the mounting portion 20D of the oil level gauge protecting member 20 is attached to the oil filler port member 10 of the oil tank 1, there is no need to provide a special mounting member for attaching the oil level gauge protecting member 20 to the oil tank 1. This can be done without increasing the number of parts of the tank 1. Furthermore, since the oil level gauge protection member 20 has the mounting portion 20D using the fourth side plate 20C, it is not necessary to provide a special mounting portion, and the number of parts of the oil level gauge protection member 20 is not increased. it can.

  Further, as in the embodiment, the cooler filter 17 can be attached to the existing cooler 16 later as needed, so that the number of the coolers 16 can be increased. Moreover, since the oil receiver 19 can be attached later to the existing oil tank 1 as necessary, the type of the oil tank 1 can be increased. Further, since the hydraulic oil can be stored in the gap between the bottom plate 1E of the oil tank 1 and the oil receiving bottom portion 19C of the oil receiver 19, the bottom plate 1E of the oil tank 1 is directly attached to the oil receiving bottom portion 19C of the oil receiver 19. More leaked hydraulic oil can be accommodated than those.

In each of the above-described embodiments, the electric motor 3 having the hydraulic pump 4 fixed to one side is placed on the upper plate 2 of the tank 1, but the hydraulic pump is placed and fixed on the upper plate of the oil tank, The hydraulic pump and the electric motor may be arranged separately from the oil tank. Further, the oil level gauge protecting members 9 and 20 are opened in the front direction of the oil level gauge 8, but a transparent member may be provided in the opening so that the stored amount of hydraulic oil displayed on the oil level gauge 8 can be visually recognized from the outside. Of course it is good.

1: Oil tank 1A: First side plate (side plate)
3: Electric motor 4: Hydraulic pump 8: Oil level gauge 9: Oil level gauge protection member

Claims (4)

An oil tank that stores hydraulic oil, a hydraulic pump that sucks and discharges the stored hydraulic oil, and an electric motor that rotationally drives the hydraulic pump, and an oil supply port that supplies hydraulic oil is provided on the upper plate of the oil tank. An oil supply port member that is opened is provided, an oil level gauge that visually recognizes the amount of stored hydraulic oil is provided on the side plate of the oil tank, an oil level gauge protection member that protects the oil level gauge is provided on the oil tank, and an oil level gauge protection member Is open in the front direction to visually check the stored hydraulic oil amount of the oil level gauge, the back direction facing the front direction of the oil level gauge, and one side direction substantially orthogonal to the front direction and the back direction of the oil level gauge And a side surface direction of the other side surface and the other side surface direction is covered with the oil tank side plate, and further has a fourth side plate covering the upper side of the oil level gauge, the fourth side plate has a mounting portion extending, this mounting detachably the attachment portion to the fuel supply port member Hydraulic apparatus according to claim.  The oil level gauge protecting member has a first side plate that covers one side surface direction of the oil level meter and a second side plate that covers the other side surface direction, and the back surface direction of the oil level meter is set to the oil tank. The hydraulic apparatus according to claim 1, wherein the hydraulic apparatus is covered with a side plate.  The oil level gauge protecting member has a first side plate that covers one side surface direction of the oil level meter, and a third side plate that covers a back surface direction of the oil level meter, and the other side surface direction of the oil level meter. The hydraulic apparatus according to claim 1, wherein the oil tank is covered with a side plate of the oil tank. The said oil level gauge protection member joined the said 1st side plate and the said 2nd side plate by the said 4th side plate, or the said 1st side plate and the said 3rd side plate, The Claim 2 or Claim characterized by the above-mentioned. Item 4. The hydraulic device according to Item 3.

Images