CN219504693U

CN219504693U - Electric hydraulic tool

Info

Publication number: CN219504693U
Application number: CN202320598449.7U
Authority: CN
Inventors: 邵崇明
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-08-11
Anticipated expiration: 2033-03-22

Abstract

The utility model provides an electric hydraulic tool, and belongs to the technical field of machinery. It has solved the great problem of current electric hydraulic tool installation degree of difficulty. This electronic hydraulic tool, including motor, hydro-cylinder, be used for the oil bag of oil storage and the rear portion has the body of installation cavity, the hydro-cylinder is fixed the front portion of body, the motor is fixed the installation cavity of body just with the hydro-cylinder position is relative, the oil bag is fixed top or lateral part of body and oil bag and the hydro-cylinder in have the oil feed hole that enables oil bag inner chamber intercommunication to in the hydro-cylinder, swing joint has the plunger that is the column on the oil bag, the plunger outer end stretches into in the body just the motor can drive the plunger is along axial flexible and make the fluid in the oil bag is to in the hydro-cylinder carries. The electric hydraulic tool has the advantage of low installation difficulty.

Description

Electric hydraulic tool

Technical Field

The utility model belongs to the technical field of machinery, and relates to an electric hydraulic tool.

Background

The electric hydraulic tool is driven by a motor to drive an oil pump assembly, hydraulic oil is sucked from an oil bag, and then high-pressure hydraulic oil is formed and discharged until the hydraulic oil is sent to an executive component for working. The core working position of the hydraulic tool is a cylinder body, a pump cavity for installing an oil pump assembly is formed in the cylinder body, and a one-way valve is installed at the oil inlet end and the oil outlet end of the pump cavity so as to facilitate transportation of hydraulic oil.

For example, an electro-hydraulic tool was designed and filed in chinese patent with the application number: 201220733158.6; the bulletin number is: CN202985531U; the electric hydraulic tool comprises a body and a hydraulic working end positioned on the body, wherein an oil cylinder and an oil storage cavity are arranged in the body, the oil cylinder is communicated with the oil storage cavity through an oil way, the body is also provided with a pressurizing mechanism capable of pressing power oil in the oil storage cavity into the oil cylinder, the hydraulic working end is positioned in the oil cylinder, the body is provided with an oil drain hole which is communicated with the oil storage cavity and the oil cylinder, the body is also provided with a switch assembly which is started to enable the pressurizing mechanism to act, and a plug piece which is started to close the oil drain hole when the switch assembly is arranged between the switch assembly and the oil drain hole.

However, the pressurizing mechanism in the electro-hydraulic tool comprises a motor and a transmission assembly, and the whole pressurizing mechanism is arranged at the side part of the body, so that the radial installation angle of the pressurizing mechanism is required to be higher in order to ensure the accuracy and stability of transmission, and the installation difficulty is high.

Disclosure of Invention

The utility model aims to solve the problems existing in the prior art, and provides an electric hydraulic tool which solves the problem that the existing electric hydraulic tool is difficult to install.

The aim of the utility model can be achieved by the following technical scheme:

the electric hydraulic tool comprises a motor, an oil cylinder, an oil bag for storing oil and a body with an installation cavity at the rear part, wherein the oil cylinder is fixed at the front part of the body, and the electric hydraulic tool is characterized in that the motor is fixed in the installation cavity of the body and is opposite to the oil cylinder in position, the oil bag is fixed at the top or side part of the body, oil holes which enable the inner cavity of the oil bag to be communicated with the oil cylinder are formed in the oil bag and the oil cylinder, a plunger which is columnar is movably connected to the oil bag, the outer end of the plunger stretches into the body, and the motor can drive the plunger to stretch along the axial direction and enable oil in the oil bag to be conveyed into the oil cylinder.

The electric hydraulic tool is also composed of a body, an oil bag, an oil cylinder and a motor, and is driven by the motor to provide power when in actual use, the plunger is driven to reciprocate axially, and the pressure formed after the plunger moves is utilized to ensure that oil in the oil bag is conveyed into the oil cylinder through the oil conveying hole to provide power for pushing out the oil cylinder. Wherein, this electric hydraulic tool fixes the motor in the installation cavity at body rear portion, and places the lower oil pocket of installation accuracy requirement outside the body in, only need guarantee the machining error in installation cavity satisfy in-service use demand can, with the motor direct insertion in the installation cavity during the assembly, the installation difficulty is little, and the installation effectiveness is high.

In the electric hydraulic tool, the output shaft of the motor is connected with the cam in a transmission way, the position of the body corresponding to the outer side surface of the cam is provided with a through hole in a penetrating way, and the outer end of the plunger extends into the through hole and acts on the outer side surface of the cam. The cam that the eccentric setting takes place eccentric rotation at the during operation of motor for the distance between the axis of its lateral surface towards plunger one side and motor output shaft constantly changes, thereby drives the plunger that is always acting on the cam lateral surface and takes place axial reciprocating motion, realizes well oil pocket to the pump oil of hydro-cylinder direction, here, except the oil delivery hole between oil pocket and the body, only plunger and through-hole need cooperate, and the cooperation precision requirement is low, and it is comparatively convenient to install.

In the above electro-hydraulic tool, the output shaft of the motor is connected with at least two stages of planetary gears.

In the electric hydraulic tool, the oil bag is provided with a blind hole, the plunger penetrates through the blind hole, a spring is further arranged in the blind hole, and two ends of the spring are respectively abutted against the bottom surface of the blind hole and the inner end of the plunger. The plunger is provided with power which always acts against the outer side of the cam by the arrangement of the spring.

In the above electro-hydraulic tool, the bottom of the body is provided with a slot, and a battery is inserted in the slot.

Compared with the prior art, the electric hydraulic tool has the advantages that the motor is fixed in the installation cavity at the rear part of the body, the oil bag with lower installation accuracy requirement is arranged outside the body, the machining error of the installation cavity is only required to be ensured to meet the actual use requirement, the motor is directly inserted into the installation cavity during assembly, the installation difficulty is small, and the installation efficiency is high.

Drawings

Fig. 1 is a schematic cross-sectional view of the present electro-hydraulic tool.

In the figure, 1, an oil bag; 2. an oil cylinder; 3. a motor; 4. a mounting cavity; 5. a body; 6. a plunger; 7. a cam; 8. a through hole; 9. a planetary gear; 10. and a battery.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the electric hydraulic tool comprises a motor 3, an oil cylinder 2 with an oil cavity, an oil bag 1 for storing oil, and a body 5 with an installation cavity 4 at the rear part, wherein the oil cylinder 2 is fixed at the front part of the body 5, the motor 3 is fixed in the installation cavity 4 of the body 5 and is opposite to the oil cylinder 2 in position, the oil bag 1 is fixed at the top or side part of the body 5, and oil delivery holes which can enable the inner cavity of the oil bag 1 for storing oil to be communicated to the oil cavity in the oil cylinder 2 are arranged in the oil bag 1 and the oil cylinder 2. The plunger 6 in a column shape is movably connected to the oil bag 1, the outer end of the plunger 6 stretches into the body 5, and the motor 3 can drive the plunger 6 to stretch and retract along the axial direction and enable oil in the oil bag 1 to be conveyed into the oil cylinder 2. The bottom of the body 5 is provided with a slot, and a battery 10 is detachably inserted in the slot.

Specifically, the output shaft of the motor 3 is connected with a two-stage planetary gear 9 and a cam 7 eccentrically arranged, a through hole 8 is formed in the body 5 corresponding to the position of the outer side surface of the cam 7 in a penetrating manner, and the outer end of the plunger 6 stretches into the through hole 8 and always acts on the outer side surface of the cam 7. In this embodiment, the oil bag 1 is provided with a blind hole, the plunger 6 is inserted into the blind hole, a spring is further arranged in the blind hole, two ends of the spring respectively lean against the bottom surface of the blind hole and the inner end of the plunger 6, the middle part of an oil conveying hole in the oil bag 1 is communicated with the inner end of the blind hole, and two ends of the oil conveying hole are respectively provided with a one-way valve for enabling oil to be conveyed from the oil bag 1 to the oil cylinder 2 in a one-way manner. In this embodiment, the plunger 6 has a two-end structure, one section is located at the oil pocket 1 and the outer end extends out, and the other section is located in the through hole 8.

When the electric hydraulic tool is used, the electric hydraulic tool is driven by the motor 3 to provide power to drive the planetary gear 9 and the cam 7 to circumferentially rotate, the distance from the outer peripheral surface of one side of the cam 7 towards the through hole 8 to the axis is changed, and the outer end of the plunger 6 always abuts against the outer side surface of the cam 7 under the action of the elastic force of the spring, so that the plunger 6 can be driven to axially reciprocate.

When the plunger 6 stretches out towards the direction of the body 5, negative pressure is formed in the blind hole, oil in the oil bag 1 is sucked out, when the plunger 6 retracts, the oil is extruded, the oil pressure rises, the one-way valve at the oil outlet position of the oil delivery hole is pushed open to deliver oil towards the direction of the oil cavity, and power is provided for pushing out the oil cylinder 2.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The electric hydraulic tool comprises a motor (3), an oil cylinder (2), an oil bag (1) for storing oil and a body (5) with an installation cavity (4) at the rear part, wherein the oil cylinder (2) is fixed at the front part of the body (5), and is characterized in that the motor (3) is fixed in the installation cavity (4) of the body (5) and opposite to the oil cylinder (2) in position, the oil bag (1) is fixed at the top or the side part of the body (5) and is provided with an oil conveying hole which enables the inner cavity of the oil bag (1) to be communicated with the oil cylinder (2) in the oil cylinder (2), a columnar plunger (6) is movably connected to the oil bag (1), the outer end of the plunger (6) stretches into the body (5) and the motor (3) can drive the plunger (6) to stretch along the axial direction and enable oil in the oil bag (1) to convey to the oil cylinder (2) in the oil cylinder.

2. The electrohydraulic tool according to claim 1, characterized in that an output shaft of said motor (3) is connected with a cam (7) eccentrically disposed, a through hole (8) is provided in said body (5) at a position corresponding to an outer side surface of said cam (7), and an outer end of said plunger (6) extends into said through hole (8) and acts on an outer side surface of said cam (7).

3. Electro-hydraulic tool according to claim 1 or 2, characterized in that the output shaft of the motor (3) is connected with at least two stages of planetary gears (9).

4. The electric hydraulic tool according to claim 1 or 2, wherein the oil bag (1) is provided with a blind hole, the plunger (6) is arranged in the blind hole in a penetrating way, a spring is further arranged in the blind hole, and two ends of the spring are respectively abutted against the bottom surface of the blind hole and the inner end of the plunger (6).

5. The electrohydraulic tool according to claim 1 or 2, characterized in that the body (5) has a socket at the bottom, in which a battery (10) is plugged in.