Portable electric hydraulic pump

Abstract

The utility model discloses a portable electric hydraulic pump which comprises a shell, a lithium battery and a hydraulic system. A plug-in interface is arranged outside the shell, and the lithium battery is plugged and mounted on the plug-in interface; the hydraulic system comprises a driving motor, a speed reducer, a hydraulic pump, an oil bag and a control valve; the lithium battery is electrically connected with the driving motor and the control valve; an output shaft of the driving motor is connected with the speed reducer, the output end of the speed reducer drives the hydraulic pump to work, hydraulic oil in the oil bag is compressed and then conveyed to the control valve when the hydraulic pump works, an oil outlet channel and an oil return channel are arranged in the control valve, the oil outlet channel is communicated with an oil outlet connector outside the shell, and meanwhile the oil outlet connector is communicated with the oil return channel. And during working, the action of the control valve controls the opening and closing of the oil outlet passage and the oil outlet interface or controls the opening and closing of the oil outlet interface and the oil return passage. The portable electric hydraulic pump designed by the utility model adopts a lithium battery power supply structure, has the characteristics of small size and portability, and is particularly suitable for passive environment and field operation.

Description

Technical Field

[0001] The utility model relates to an electric hydraulic pump, in particular to a portable electric hydraulic pump. Background Art

[0002] In operations such as engineering, agriculture, and construction, some hydraulic tools are often used, and corresponding electric hydraulic pumps are necessarily required for hydraulic tools. Here, existing electric hydraulic pumps are relatively bulky and very inconvenient to carry, and their operations all require an external power supply to work, which brings great inconvenience to a power-free environment or field work. Content of the Utility Model

[0003] In view of the above problems, the utility model designs a portable electric hydraulic pump, which adopts a lithium battery power supply structure, has the characteristics of being small and portable, and is particularly suitable for use in a power-free environment and field operations.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A portable electric hydraulic pump, characterized in that: it includes a housing, a lithium battery, and a hydraulic system arranged in the housing; an insertion interface for the lithium battery is arranged outside the housing, and the lithium battery is plugged and installed thereon; the hydraulic system includes a driving motor, a speed reducer, a hydraulic pump, an oil bag, and a control valve; the lithium battery is electrically connected to the driving motor and the control valve; the output shaft of the driving motor is connected to the speed reducer, and the output end of the speed reducer drives the hydraulic pump to work. When the hydraulic pump works, the hydraulic oil in the oil bag is compressed and sent to the control valve. The control valve is provided with an oil outlet passage and an oil return passage. The oil outlet passage is communicated with an oil outlet interface outside the housing, and at the same time, the oil outlet interface is communicated with the oil return passage. During operation, the action of the control valve controls the opening and closing of the oil outlet passage and the oil outlet interface or controls the opening and closing of the oil outlet interface and the oil return passage. The end of the oil return passage is communicated with the oil bag.

[0006] More specifically, the above housing is composed of a front housing and a rear housing in combination. A plurality of connecting columns are arranged between the front and rear housings, and the connecting columns are connected by screws.

[0007] More specifically, a handle structure is arranged above the above housing.

[0008] More specifically, a control switch for controlling the start and stop of the driving motor is arranged on the above housing.

[0009] More specifically, heat dissipation holes are arranged on the housing at positions corresponding to the driving motor or / and the control valve.

[0010] More specifically, a transparent liquid level observation window is arranged on the side wall of the above housing.

[0011] The hydraulic pump designed by the utility model uses a lithium battery outside the housing as the power supply to provide power for the drive motor and control valve in the hydraulic system. It can work without an external power supply during use, is especially suitable for the needs of passive environments and field operations, and has the characteristics of simple and practical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 Schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0014] Figure 3 Schematic diagram of the three-dimensional structure of the utility model after removing the front housing;

[0015] Figure 4 The utility model Figure 2 Schematic diagram of the three-dimensional structure of the utility model after removing the oil bag;

[0016] Among them,

[0017] 1 - housing, 1a - front housing, 1b - rear housing, 1c - connecting column, 11 - socket, 12 - handle, 13 - control switch, 14 - oil outlet, 15 - heat dissipation hole, 16 - liquid level observation window;

[0018] 2 - lithium battery;

[0019] 3 - hydraulic system, 31 - drive motor, 32 - reducer, 33 - hydraulic pump, 34 - oil bag, 35 - control valve. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] As Figures 1-4 shown, a portable electric hydraulic pump includes a housing 1, a lithium battery 2, and a hydraulic system 3 disposed in the housing.

[0021] A socket 11 for the lithium battery 2 is provided outside the housing 1, and the lithium battery 2 is plugged and installed thereon. Here, considering the processing and installation requirements of the internal hydraulic system 3, the housing 1 is composed of a front housing 1a and a rear housing 1b, and a plurality of connecting columns 1c are provided between the front and rear housings, and the connecting columns 1c are connected by screws.

[0022] A handle structure 12 is provided above the housing 1 for carrying the electric hydraulic pump when going out.

[0023] The hydraulic system 3 includes a driving motor 31, a reducer 32, a hydraulic pump 33, an oil bag 34 and a control valve 35. The lithium battery 2 is electrically connected to the driving motor 31 and the control valve 35 to provide power for the driving motor 31 and the control valve 35. The driving motor 31 is arranged above the inner cavity of the housing 1, and its output shaft is connected to the reducer 32. The reducer 32 reduces the power of the driving motor 31 and drives the hydraulic pump 33 to work. The eccentric cam at the output end of the reducer 32 drives the high-pressure plunger or the low-pressure plunger of the hydraulic pump 33 to work, and then the hydraulic oil in the oil bag 34 is compressed and sent to the control valve 35. The control valve 35 is provided with an oil outlet passage and an oil return passage. The oil outlet passage is connected to the oil outlet interface 14 outside the housing 1, and the oil outlet interface 14 is connected to the oil return passage. The end of the oil return passage is connected to the oil bag 34.

[0024] When supplying oil, the control valve 35 operates to control the oil outlet passage to be connected with the oil outlet interface 14 and controls the oil outlet interface 14 to be cut off from the oil return passage, and the high-pressure oil can be supplied to the external hydraulic tools for use. When returning oil, the control valve 35 operates to control the oil outlet passage to be cut off from the oil outlet interface 14 and controls the oil outlet interface 14 to be connected with the oil return passage, and the high-pressure oil will return to the oil bag 34 through the oil return passage to realize the oil return operation of the hydraulic oil and prepare for the next oil supply.

[0025] The housing 1 is provided with a control switch 13 for controlling the start and stop of the driving motor 31 .

[0026] Taking heat dissipation into consideration, the housing 1 is provided with heat dissipation holes 15 at locations corresponding to the drive motor 31 and / or the control valve 35 , so as to quickly dissipate the heat of the drive motor 31 and the control valve 35 .

[0027] A transparent liquid level observation window 16 is provided on the side wall of the housing 1, so that the operator can visually observe the remaining oil in the oil bag 34 and replenish the oil in time when the oil is insufficient.

[0028] In summary, the hydraulic pump designed in the utility model uses the lithium battery 2 outside the shell 1 as a power supply to provide power for the drive motor 31 and the control valve 35 in the hydraulic system 3. It can work without an external power supply during use. At the same time, it realizes the miniaturization of the electric hydraulic pump and can be carried at any time. It is particularly suitable for passive environments and field operations, and has the characteristics of simple structure and practicality.

[0029] The above description is only a preferred implementation mode of the utility model, and does not impose any form of limitation on the utility model. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A portable electric hydraulic pump, characterized in that: The invention comprises a housing (1), a lithium battery (2) and a hydraulic system (3) arranged in the housing (1); a lithium battery plug interface (11) is arranged outside the housing (1), and the lithium battery (2) is plugged and installed on the lithium battery (2); the hydraulic system (3) comprises a drive motor (31), a reducer (32), a hydraulic pump (33), an oil bag (34) and a control valve (35); the lithium battery (2) is electrically connected to the drive motor (31) and the control valve (35); the output shaft of the drive motor (31) is connected to the reducer (32), and the output shaft of the reducer (32) is connected to the output shaft of the reducer (32). The output end drives the hydraulic pump (33) to work. When the hydraulic pump (33) is working, the hydraulic oil in the oil bag (34) is compressed and sent to the control valve (35). The control valve (35) is provided with an oil outlet passage and an oil return passage. The oil outlet passage is connected to the oil outlet interface (14) outside the housing (1), and the oil outlet interface (14) is connected to the oil return passage. During operation, the action of the control valve (35) controls the opening and closing of the oil outlet passage and the oil outlet interface (14) or controls the opening and closing of the oil outlet interface (14) and the oil return passage. The end of the oil return passage is connected to the oil bag (34).

2. A portable electric hydraulic pump according to claim 1, characterized in that: The housing (1) is composed of a front housing (1a) and a rear housing (1b), a plurality of connecting columns (1c) are provided between the front and rear housings, and the connecting columns (1c) are connected by screws.

3. A portable electric hydraulic pump according to claim 1 or 2, characterized in that: A handle (12) structure is provided above the shell (1).

4. A portable electric hydraulic pump according to claim 1 or 2, characterized in that: The housing (1) is provided with a control switch (13) for controlling the start and stop of the drive motor (31).

5. A portable electric hydraulic pump according to claim 1 or 2, characterized in that: The housing (1) is provided with heat dissipation holes (15) at locations corresponding to the drive motor (31) and / or the control valve (35).

6. A portable electric hydraulic pump according to claim 1 or 2, characterized in that: A transparent liquid level observation window (16) is provided on the side wall of the housing (1).

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