KR100613435B1 - Portable hydraulic pump - Google Patents

Abstract

The present invention relates to a portable hydraulic pump, and more particularly, it can be used to connect the hydraulic supply to the equipment requiring the hydraulic pressure, the weight is light and easy to carry by using the shoulder strap to the place requiring hydraulic pressure. The present invention relates to a portable hydraulic pump that can be easily moved and used.

To this end, the present invention is an oil tank for storing hydraulic oil; A casing assembled to one surface of the oil tank; A motor case assembled to one surface of the casing; An electric motor embedded in the motor case; A power line connected to the electric motor so as to supply power; A control box connected to the electric motor for speed control; Hydraulic control means mounted in the casing according to a predetermined hydraulic circuit design; A final hydraulic discharge port formed on one surface of the casing; It provides a portable hydraulic pump comprising a hydraulic hose coupled to the hydraulic discharge port and the coupler is attached to the hydraulic hose end is bound to the hydraulic tool that requires hydraulic pressure.

Portable hydraulic pump, oil tank, casing, electric motor, control box, motor case

Description

Portable hydraulic pump

1 is a perspective view showing a portable hydraulic pump according to the present invention,

2 is a front view showing a portable hydraulic pump according to the present invention,

3 is a plan view showing a portable hydraulic pump according to the present invention,

4 is a bottom view showing a portable hydraulic pump according to the present invention,

5 is a hydraulic circuit diagram of a portable hydraulic pump according to the present invention,

6 is a perspective view illustrating an operating state of a portable hydraulic pump according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10 oil tank 12 casing

14: motor case 16: uneven wrinkles

18: electric motor 20: power line

22: control wiring 24: control box

26: hydraulic discharge port 28: single acting solenoid valve

30: hydraulic hose 32: coupler

34: oil filter 36: pump

38: relief valve 40: check valve

42: metal cover body 44: tow hook

46: shoulder strap 48 fastening stiffening plate

50: connector

The present invention relates to a portable hydraulic pump, and more particularly, it can be used to connect the hydraulic supply to the equipment requiring the hydraulic pressure, the weight is light and easy to carry by using the shoulder strap to the place requiring hydraulic pressure. The present invention relates to a portable hydraulic pump that can be easily moved and used.

In general, the hydraulic pump is a device that converts mechanical energy supplied from the outside into pressure energy of the hydraulic system hydraulic fluid, and is a gear type, which is pressurized using a gap between a pair of rotating gears, and a vane connected coaxially with the rotating shaft. Using a vane type to compress the hydraulic fluid by using a plurality of cylinders installed in the vertical or parallel to reduce the volume of the cylinder according to the direction of rotation of the rotating shaft, and compressing the rotating piston type, the rotational movement to a reciprocating motion to change the hydraulic oil in the cylinder Reciprocating piston types pressurized by pistons.

Tools that require hydraulic pressure are used in various industrial and construction sites. Large hydraulic tools such as crushers or drilling machines have their own hydraulic pumps or can be connected to an excavator or equivalent large drive means. However, small hydraulic tools, such as legendary tools, hydraulic rams and hydraulic spreaders, which are to be carried by the operator, must be connected to a separate hydraulic pump.

In particular, in the event of a vehicle crash or collapse of a building, a hydraulic ram (equipment that pulls or pulls narrow gaps for support and support in shipyards) or a hydraulic spreader (equipment for cutting or deploying obstacles underwater or on the ground) is used. , In such a narrow place, there is a difficulty in connecting a separate hydraulic pump, and eventually there is a problem that can not work.

Therefore, there is a demand for a hydraulic pump that can be moved to a narrow work place or an urgent place.

The present invention has been made to solve the above problems, the oil tank and the electric motor is integrally assembled, but the cover plate to protect the solenoid valve exposed to the outside while the casing is assembled to the various valves are built therein. It is attached structure, and high / low pressure pump, relief valve, check valve, etc. are built in a simple hydraulic circuit inside the casing, and it is easy to carry by using a shoulder strap. Its purpose is to provide a portable hydraulic pump that can be easily carried and used at any time.

The present invention for achieving the above object is an oil tank for storing hydraulic oil; A casing assembled to one surface of the oil tank; A motor case assembled to one surface of the casing; An electric motor embedded in the motor case; A power line connected to the electric motor so as to supply power; A control box connected to the electric motor for speed control; Hydraulic control means mounted in the casing according to a predetermined hydraulic circuit design; A final hydraulic discharge port formed on one surface of the casing; It provides a portable hydraulic pump comprising a hydraulic hose coupled to the hydraulic discharge port and the coupler is attached to the hydraulic hose end is bound to the hydraulic tool that requires hydraulic pressure.

In a preferred embodiment, the hydraulic control means and the oil filter for filtering the hydraulic oil supplied from the oil tank; A pump that operates simultaneously with driving the electric motor to pump hydraulic oil from the oil tank to high pressure or low pressure; A relief valve connected to a discharge port side of the pump to return a residual flow rate exceeding a reference pressure to an oil tank; A check valve for passing hydraulic oil discharged from the pump in one direction; And a single-acting solenoid valve arranged at an outlet side of the check valve and branched from the power line so as to be capable of supplying power so as to be opened so that hydraulic pressure can be supplied to the hydraulic tool to which the coupler is coupled. It is configured by.

Preferably, in order to protect the exposed single acting solenoid valve from the external force and extending from one surface of the casing to the motor case, a metal cover body covering the single acting solenoid valve is mounted to the motor case.

In addition, the surface of the oil tank is formed in the uneven wrinkles for easy gripping along the circumferential surface, the surface of the oil tank is coated with a luminous material to ensure visibility during the night operation.

In addition, the upper end surface of the oil tank and the upper end surface of the motor case is formed integrally with the traction ring is fitted with a shoulder strap.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the appearance of a portable hydraulic pump according to the present invention, Figure 2 is a front view, Figure 3 is a plan view, Figure 4 is a bottom view.

The hydraulic pump according to the present invention has a simple structure in which an oil tank and a motor case in which an electric motor is installed are assembled with a casing in which a hydraulic control means is installed, and a pump, a relief valve, and a check valve are hydraulic control means in the casing. It is made of a small structure built in a simple hydraulic circuit, etc., and is light in weight, has excellent mobility, and can be carried using a shoulder strap, and thus requires a small hydraulic device, such as a hydraulic ram (base in a shipyard, etc.). Equipment for opening or pulling narrow gaps for supporting purposes, hydraulic punching machines for punching plates, hydraulic spreaders (equipment for cutting or deploying obstacles in the water or on the ground), hydraulic cutters for cutting cables, etc. It can be used by connecting to a hydraulic jack, etc. The point is to make it available.

Looking at the external configuration of the present invention, the oil tank 10, the hydraulic oil is stored, the casing 12 assembled on one surface of the oil tank 10, and the motor case 14 assembled on the opposite surface of the casing 12 Divided by)

Concave-convex wrinkles 16 are formed on the surface of the oil tank 10 along its circumferential surface, and the concave-convex wrinkles 16 are applied to prevent slipping and gripping when a worker lifts them by hand. will be.

In addition, as the surface of the oil tank 10 is coated with a luminous material, visibility can be easily ensured even at night or in a narrow and dark place.

An electric motor 18 is embedded in the motor case 14, which is arranged such that the drive shaft faces the casing 12.

In addition, a power line 20 and a control wiring 22 capable of supplying power to the electric motor 18 are connected to one surface of the motor case 14, and an electric motor is connected to an end of the control wiring 22. A control box 24 is attached to control the speed of 18) and to perform on / off switching control.

Inside the casing 12 assembled between the oil tank 10 and the motor case 14, hydraulic control means are built in a predetermined arrangement according to a predetermined hydraulic circuit design, and at one position of the casing 12 The hydraulic discharge port 26 is formed, and the single acting solenoid 28 is mounted in the opposite position.

A hydraulic hose 30 is coupled to the hydraulic discharge port 26 of the casing 12, and a coupler 32 is attached to the end of the hydraulic hose 30, and the coupler 32 is a hydraulic pressure requiring hydraulic pressure. It is fastened to tools (hydraulic ram, hydraulic punching machine, hydraulic spreader, hydraulic cutter, hydraulic jack, etc.).

On the other hand, a larger diameter flange is formed at one end (combined with the casing) of the oil tank, and an elliptical fastening reinforcing plate 48 is padded on the rear surface of the flange, and the fastening reinforcing plate ( 48 is bolted from the casing 12 to the assembly between the oil tank 10 and the casing 12.

Here, with reference to the hydraulic circuit diagram of Figure 5 attached to the hydraulic control means installed in the casing as follows.

The hydraulic control means is assembled in a predetermined arrangement in accordance with the hydraulic circuit design in the casing 12, the oil filter 34 for filtering the hydraulic oil supplied from the oil tank 10, the oil tank 10 Is placed on the side.

In addition, the pump 36 is arranged at the outlet side of the oil filter 34, the pump 36 is operated at the same time as the drive of the electric motor 18 to drive the hydraulic oil from the oil tank 10 to a high or low pressure Will be pumped.

On the discharge port side of the pump 36, a relief valve 38 for returning the residual flow rate exceeding the reference pressure to the oil tank is arranged, and the relief valve 38 is for pressure control, and its function is generally It regulates the pressure of hydraulic oil coming from the pump and at the same time returns the residual pressure or flow rate to the tank.

In addition, a check valve 40 for passing the discharged hydraulic oil in one direction is disposed at the discharge port side of the pump 36.

On the other hand, the power line 20 is branched in the motor case 14 extends to the outside of the motor case 14, as can be seen in the bottom view of the accompanying Figure 4 power source extended outside the motor case 14 A connector 50 is attached to the end of the wire, and the connector 50 is inserted into the single acting solenoid valve 28 opposite to the final hydraulic discharge port 26 of the casing 12 so as to enable power supply.

Therefore, when the hydraulic pressure passing through the check valve 40 flows to the single-acting solenoid valve 28, the spring in the single-acting solenoid valve 28 is pressed and the path through which the hydraulic pressure can pass is opened.

Thus, the hydraulic pressure passing through the single-acting solenoid valve 28 exits the final hydraulic discharge port 26 and is supplied to the hydraulic tool to which the coupler 32 is coupled.

In particular, the single-acting solenoid valve 28 extends from one surface of the casing 12 toward the motor case 14 and is mounted in an exposed state. The externally acting solenoid valve 28 is applied to an external force. The metal cover body 42 is attached to the motor case 14 as a structure for protecting from (the impact which arises, for example, when it hits a surrounding object etc.).

That is, the metal cover body 42 is spaced apart from the single-acting solenoid valve 28 by a predetermined distance to cover the single-acting solenoid valve 28 and to be assembled at both ends of the motor case 14.

Thus, the single acting solenoid valve 28 can be easily protected from external forces by the metal cover body 42.

Meanwhile, a traction ring 44 is integrally formed on the upper end surface of the oil tank 10 and the upper end surface of the motor case 14, and the shoulder strap 46 is fitted to the traction ring 44. The bar is made easier for the operator to carry and move the hydraulic pump while the shoulder strap 46 is put on the shoulder.

Here, the state of use of the portable hydraulic pump according to the present invention in more detail as follows.

First, the portable hydraulic pump of the present invention is put down in a place to be used, and then the plug of the power line 20 is plugged into the power supply means.

Then, the coupler 32 is connected to a hydraulic tool for using hydraulic pressure, that is, a hydraulic ram, a hydraulic punching machine, a hydraulic spreader, a legendary tool such as a hydraulic cutter, a hydraulic jack, and the like.

Next, when the upper button of the up / down button in the control box 24 is pressed, the electric motor 18 operates to send the hydraulic pressure at low pressure to fill the pressure.

That is, the pump 36 is driven together with the operation of the electric motor 18, the pumping of the hydraulic oil via the oil filter 34 from the oil tank 10 is made, the flow rate exceeding the reference pressure Is returned to the oil tank (10) via the relief valve (38).

Subsequently, the hydraulic oil flows through the check valve 40 toward the single-acting solenoid valve 28, and the single-acting solenoid valve 28 is in an open state when the reference hydraulic pressure is applied.

Therefore, the hydraulic pressure passing through the single-acting solenoid valve 28 is discharged through the final hydraulic discharge port 26 of the casing 12, the hydraulic pressure exiting the final hydraulic discharge port 26 is the coupler 32 It is supplied as a combined hydraulic tool.

On the other hand, when the lower button of the up / down button of the control box 24 is pressed, the electric motor 18 is off and at the same time the hydraulic oil is returned to the oil tank 10 again along the path that was supplied.

6 is an exemplary view of using the hydraulic pump of the present invention connected to a hydraulic tool, a) of FIG. 6 shows a state of being connected to a hydraulic jack, and b) is a state of connecting to a hydraulic cutter. And c) shows the state used by connecting to the hydraulic ram.

As shown in the exemplary drawing, the hydraulic pump of the present invention can be easily connected to the hydraulic tool that requires the hydraulic pressure, even if the working space is narrow and easy to carry and move can be used conveniently.

It is apparent that the present invention can be variously modified and imitated by those skilled in the art without departing from the scope of the technical idea of the present invention.

As described above, according to the portable hydraulic pump according to the present invention, the oil tank and the motor case are assembled with the casing in appearance, and the hydraulic control means according to the simple hydraulic circuit design is built in the casing. to provide.

In addition, it can be easily connected and used to the equipment requiring hydraulic pressure, even if the workspace is a narrow space can be provided smoothly.

In addition, there is a low number of parts has the advantage of low production cost.

In addition, it is light in weight and easy to carry using a shoulder strap can be used to easily move to any place requiring hydraulic pressure.

Claims (5)

An oil tank in which hydraulic oil is stored; A casing assembled to one surface of the oil tank; A motor case assembled to one surface of the casing; An electric motor embedded in the motor case; A power line connected to the electric motor so as to supply power; A control box connected to the electric motor for driving speed control; An oil filter for filtering hydraulic oil supplied from the oil tank; A pump that operates simultaneously with driving the electric motor to pump hydraulic oil from the oil tank to high pressure or low pressure; A relief valve connected to a discharge port side of the pump to return a residual flow rate exceeding a reference pressure to an oil tank; A check valve for passing hydraulic oil discharged from the pump in one direction; A single-acting solenoid valve arranged at an outlet side of the check valve and coupled to a connector branched from the power line so as to supply power, so that hydraulic pressure can be supplied to the hydraulic tool to which the coupler is coupled; In the portable hydraulic pump in which the upper end surface of the oil tank and the upper end surface of the motor case is integrally formed with a traction ring fitted with a shoulder strap, In order to protect the exposed single acting solenoid valve from the external force and extending from one side of the casing to the motor case, a metal cover body covering the single acting solenoid valve is mounted on the motor case, and the circumferential surface thereof on the surface of the oil tank. As a result, the uneven wrinkles easily formed on the gripping, and the surface of the oil tank is a portable hydraulic pump, characterized in that the coating of luminous material to ensure visibility during the night work. delete delete delete delete

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