CN115289081A

CN115289081A - Take electric hand drill manually operation's electric liquid executor

Info

Publication number: CN115289081A
Application number: CN202210915713.5A
Authority: CN
Inventors: 刘宝军; 郑学明; 刘观华; 于洋; 王冶
Original assignee: Shenyang Northeast Electric Power Control Co ltd
Current assignee: Shenyang Northeast Electric Power Control Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-11-04

Abstract

The invention provides a manually operated electro-hydraulic actuator with an electric hand drill, which aims to solve the problems that: how the manual mechanism uses the hydraulic circuit inherent to the electro-hydraulic actuator is no longer provided with a manual mechanism hydraulic circuit. The key points are as follows: the electric drill comprises a servo motor or a stepping motor, a rotor of the servo motor or the stepping motor, a driving shaft, a transition shaft, an electric hand drill and a chuck of the electric hand drill, wherein the driving shaft is positioned at the front end of the rotor; the tail part of the rotor is provided with a motor input shaft which extends backwards and extends out of the motor shell, and the front end of the transition shaft is matched with the motor input shaft in a torque transmission mode. The expected effect is: the volume is obviously reduced; the number of components is obviously reduced, and the reliability of the invention is improved.

Description

Take electric hand drill manually operation's electricity liquid executor

Technical Field

The invention relates to an electro-hydraulic actuator.

Background

Fig. 1 is a schematic diagram of an application of a prior manual mechanism in an electro-hydraulic actuator, and the prior manual mechanism is realized by a manual pump 1 matched with a manual reversing valve 2, and a hydraulic circuit of the prior manual mechanism needs to be designed separately, namely the hydraulic circuit of the manual mechanism. The hydraulic circuit of the manual mechanism and the hydraulic circuit of the electro-hydraulic actuator (inherent) are two circuits, the electro-hydraulic actuator is a hydraulic pump 6 driven by a motor 4, hydraulic oil is pumped into an oil cylinder 7 through the hydraulic circuit, and a piston of the oil cylinder 7 is driven to reciprocate. The hydraulic circuit of the manual mechanism comprises at least two hydraulic oil pipes 3 and a manual pump rocker 5 besides a manual pump 1 and a manual reversing valve 2. When the manual pump is used, the manual pump rocker 5 is inserted into a connecting sleeve of the manual pump 1, the manual pump rocker 5 is rocked to drive the manual pump 1 to absorb and discharge oil, and the manual pump 1 presses hydraulic oil into a cavity of the oil cylinder 7 through the hydraulic pipeline 3 to enable the oil cylinder 7 to act; when the manual reversing valve 2 is reversed, hydraulic oil is pressed into the other cavity of the oil cylinder 7 to enable the oil cylinder 7 to move reversely, and therefore the reciprocating motion of the oil cylinder 7 driven by the manual mechanism can be achieved. The manual pump 1, the manual reversing valve 2 and the hydraulic oil pipe 3 need to occupy a part of physical space independently; the manual pump rocker 5 also has a certain operating space when in use, and the situation that the manual pump rocker does not interfere with surrounding adjacent equipment needs to be considered. Such an electrohydraulic actuator conventionally equipped with a manual mechanism is therefore generally considerably more bulky than an electrohydraulic actuator without a manual mechanism. The hydraulic circuit of the separately arranged manual mechanism comprises a hydraulic joint surface and a pipe joint 8 for connecting pipelines, and the positions have the risk of hydraulic oil leakage. The manual pump 1 and the manual reversing valve 2 are basic hydraulic components, and failure is possible, such as oil leakage, jamming and the like. When these hydraulic components fail, this can lead to an overall failure of the manual mechanism. When the manual mechanism is not used, the manual pump rocker 5 is generally separated from the manual pump 1 and is easy to lose; the manual mechanism is not available once the manual pump rocker 5 is lost.

The electric hand drill comprises a flashlight drill chuck and a group of drill bits with serial specifications. And an appropriate drill bit is selected and arranged on the chuck according to the requirement at the use site. Each drill bit can be assembled and disassembled on the chuck of the electric hand drill at any time.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a manually operated electro-hydraulic actuator with an electric hand drill, which is not additionally provided with a hydraulic circuit of a manual mechanism.

The purpose of the invention is realized as follows: the electric drill comprises a servo motor or a stepping motor, a rotor of the servo motor or the stepping motor, and a driving shaft, wherein the driving shaft is positioned at the front end of the rotor; the tail part of the rotor is provided with a motor input shaft which extends backwards and extends out of the motor shell, and the front end of the transition shaft is matched with the motor input shaft in a torque transmission mode. Forward and aft as used herein means the drive shaft is forward, the rotor is centered, and the transition shaft is aft.

When the electro-hydraulic actuator needs a manual mechanism to work, the transition shaft and the electric hand drill chuck are sequentially mounted on the motor input shaft, the electric hand drill is turned on, the electric hand drill chuck sequentially drives the transition shaft, the motor input shaft, the rotor and the motor driving shaft to rotate (output torque), the electric hydraulic pump is driven to work, and hydraulic oil enters a hydraulic loop of the electro-hydraulic actuator, namely the electro-hydraulic actuator enters a working state.

Compared with the prior art (refer to fig. 1), the positive effects of the invention are as follows: the manual mechanism comprises an electric hand drill, a transition shaft, a motor input shaft and a motor driving shaft, an inherent hydraulic circuit of the electro-hydraulic actuator is used, and a hydraulic circuit of the manual mechanism is not additionally arranged, so that the volume of the electric hand drill is obviously reduced; and secondly, the number of manual mechanism components is obviously reduced, the reliability of the invention is improved, and the cost of the product is reduced.

Drawings

The invention is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an application of a prior manual mechanism in an electro-hydraulic actuator.

Fig. 2 is a schematic diagram of the present invention, which is a state diagram of the electric-hydraulic actuator driven by the electric motor.

Fig. 3 is a schematic diagram of the state of the automatic mechanism when driving the electro-hydraulic actuator.

Fig. 4 is a view (partial) taken along direction a of fig. 3, with the cap 207 in an open state.

Detailed Description

Referring to fig. 2, the electric hand drill comprises a servo motor or a stepping motor 200, a rotor 202 of the servo motor or the stepping motor, and a driving shaft (not shown), wherein the driving shaft is positioned at the front end of the rotor, the electric hand drill further comprises a transition shaft 12, an electric hand drill 300 and a chuck 301 of the electric hand drill, the rear end of the transition shaft is in an outer hexagon shape and is arranged on the chuck in the inner hexagon shape of the electric hand drill; the tail of the rotor extends rearward and out of the motor input shaft 204 of the motor housing. In order to protect the motor input shaft 204 which extends backwards, a shaft protection tube 205 is arranged backwards at the rear part of the motor shell, a shaft protection tube cavity is communicated with a motor shell cavity, and the motor input shaft 204 penetrates through the shaft protection tube; for dust protection, (see fig. 4) the shaft protection tube is provided with an external thread 206, which mates with an internal thread of the cap 207; the front end of the transition shaft is matched with the motor input shaft in a torque transmission mode, namely that the front end surface of the transition shaft 12 is provided with a linear key groove, and the rear end surface of the motor input shaft is a linear key matched with the linear key groove.

When the electro-hydraulic actuator needs to work by a manual mechanism, the transition shaft is firstly installed on the electric hand drill, then the pipe cap is opened, the transition shaft is installed on the motor input shaft, finally the electric hand drill is opened, the electric hand drill sequentially drives the transition shaft, the motor input shaft, the rotor and the driving shaft to rotate (output torque), the electric hydraulic pump is driven to work, hydraulic oil enters a hydraulic loop of the electro-hydraulic actuator, and the electro-hydraulic actuator enters a working state.

Referring to fig. 3, when the manual mechanism finishes working, the electric hand drill is stopped, the transition shaft is taken down, the pipe cap is covered back, and the electro-hydraulic actuator of the automatic mechanism works. 6 is a hydraulic pump, and 7 is a cylinder.

Claims

1. The electro-hydraulic actuator with the hand-operated electric drill for manual operation comprises a servo motor or a stepping motor, a rotor of the servo motor or the stepping motor, and a driving shaft, wherein the driving shaft is positioned at the front end of the rotor; the tail part of the rotor is provided with a motor input shaft which extends backwards and extends out of the motor shell, and the front end of the transition shaft is matched with the motor input shaft in a torque transmission mode.

2. The hand-operated electro-hydraulic actuator with the electric hand drill according to claim 1, which is characterized in that: the rear end of the transition shaft is arranged on the electric hand drill chuck, namely, the rear end of the transition shaft is in an outer hexagon shape and is arranged on a chuck in an inner hexagon shape of an electric hand drill; the output shaft of the hand wheel is matched with the motor input shaft in a torque transmission mode, namely, a linear key groove is formed in the front end face of the output shaft of the hand wheel, and the rear end of the motor input shaft is a linear key shaft matched with the linear key groove.

3. A hand operated electro-hydraulic actuator for an electric hand drill according to claim 1 or claim 2 further including: the rear part of the motor shell is backwards provided with a shaft protection tube, a shaft protection tube cavity is communicated with a motor shell cavity, and a motor input shaft penetrates through the shaft protection tube; for dust prevention, the shaft protection tube is provided with external threads which are matched with the internal threads of the tube cap.