CN101265891B - Oil-hydraulic pump as machining tools power source - Google Patents

Abstract

The invention discloses an improved invention of an oil hydraulic pump used as the power source of machining tools, which is characterized in that an oil outlet area (A) is controlled by an electromagnetic valve (2); an oil hydraulic area (B) is controlled by a motor; the oil hydraulic area (B) is divided into a low pressure area (C) and a high pressure area (D), wherein the low pressure area communicates with the high pressure area via an oil channel (11); the oil outlet area is provided with a drainback passage (19); and the drainback passage (19) forms a cycling oil passage with an oil cavity chamber (E) via a pipeline. As the oil hydraulic pump divides the oil hydraulic area into the low pressure area and the high pressure area, in the initial working stage of the oil hydraulic pump, a rotating impeller can quickly transmit hydraulic oil in an oil chamber to the high pressure area; meanwhile, the piston acting in the high pressure area can transmit the hydraulic oil to a workpiece position; therefore, the lack of oil in the oil passage when the piston acts in the initial working stage of the oil hydraulic pump is avoided, thus ensuring the service life of the workpiece; as the motor is arranged inside the pump body, the volume is reduced and the good portability is provided.

Description

Oil pressure pump as the machining tool power source

Technical field: the improvement invention of involved in the present invention is a kind of oil pressure pump, particularly be a kind of when machining tool is worked the oil pressure pump as power source.

Background technique: the oil pressure pump that is used for machining tool in the prior art, be directly to lean on the motor shaft rotation and make pistons work carry out pump oil, because this kind pressure pump is not provided with low pressure area and zone of high pressure, therefore, pressure is difficult to guarantee, oil pressure pump is when pump oil, also there is not hydraulic oil in the starting stage oil pipe, therefore all be gas in its pipeline during the piston work done, will be through hydraulic oil being delivered in the pipeline by the piston work done after a while, so very easily shorten the working life of workpiece, and volume is also comparatively huge, moves very difficult.

Summary of the invention: technical problem solved by the invention is in order to provide a kind of simple in structure, reasonable in design, pressure stability and a kind of oil pressure pump that can control, the present invention adopts following technological scheme to realize to achieve these goals: this kind oil pressure pump, has the pump housing, in the described pump housing, be provided with fuel-displaced zone and oil pressure zone, it is characterized in that described fuel-displaced zone passes through electromagnetic valve, Electric Machine Control is passed through in described oil pressure zone, described oil pressure zone is divided into low pressure area and zone of high pressure, described low pressure area is made of impeller assembly, and described impeller assembly is installed in the rotating shaft, and rotating shaft is connected with electric-motor-driving; Described zone of high pressure is by eccentric shaft; the little pump housing and the piston that is arranged in the little pump housing are formed; described eccentric shaft and the coaxial setting of rotating shaft; described eccentric shaft is provided with bearing; described piston matches with the rotation surface of bearing; described little pump housing bottom is provided with oil filter; the filler opening connection of passing through pipeline and low pressure area of described oil filter; between low pressure area and the zone of high pressure by oily channel connection; the oil outlet of described zone of high pressure is by the filler opening connection in pipeline and fuel-displaced zone; the oil outlet in fuel-displaced zone is connected with other workpiece by pipeline; described fuel-displaced zone is provided with drainback passage, and this drainback passage is by pipeline and oil-in chamber formation circulating oil path.

As preferably, described impeller assembly is divided into wheel and blade foreign steamer in the blade, and wheel being installed in the rotating shaft in the blade, and the blade foreign steamer is installed on the wheel seat, and described wheel seat is connected with the little pump housing.

As preferably, described oil filter comprises a filter screen.

The present invention is owing to be set to low pressure area and zone of high pressure with the oil pressure zone, in the oil pressure pump initial stage of operation, the impeller that rotates can be delivered to the zone of high pressure with the hydraulic oil in the grease chamber fast, and simultaneously, zone of high pressure inner carrier work done meeting is delivered to the workpiece place with hydraulic-pressure pump, like this, oil circuit does not have the phenomenon of oil with regard to there not being oil pressure pump work starting stage piston work done, has guaranteed the working life of workpiece, and because motor is arranged on pump housing inside, therefore volume, also very convenient carrying have been dwindled.The present invention has substantive distinguishing features and progress compared with the prior art.

Description of drawings: the present invention has following accompanying drawing:

Fig. 1 internal structure sectional view of the present invention;

Fig. 2 is Figure 1B-B sectional view;

Fig. 3 is Figure 1A-A sectional view.

Embodiment: relevant detailed description of the present invention and technology contents, conjunction with figs. is described as follows, however accompanying drawing is only for reference and explanation, is not to be used for the present invention is limited.

In conjunction with Fig. 1, Fig. 2 and Fig. 3, the invention provides a kind of oil pressure pump structure, this kind oil pressure pump, has the pump housing 1, in the described pump housing 1, be provided with fuel-displaced regional A and oil pressure area B, described fuel-displaced regional A is by solenoid valve 2 controls, this fuel-displaced regional A is provided with oil discharge passage 18 and drainback passage 19, described oil pressure area B is by motor 3 controls, hydraulic oil in this oil pressure area B is emitted by the screw 27 of draining the oil of the pump housing 1 bottom, described oil pressure area B is divided into low pressure area C and zone of high pressure D, described low pressure area C is made of impeller assembly, and described impeller assembly is divided into wheel 14 and blade foreign steamer 15 in the blade, and wheel 14 is installed in the rotating shaft 4 in the blade, blade foreign steamer 15 is installed on the wheel seat 16, and described wheel seat 16 is connected with the little pump housing 7.Rotating shaft 4 is connected by gear 20 with motor 3; Described higher-pressure region D is by eccentric shaft 6; The little pump housing 7 and the piston 8 that is arranged in the little pump housing 7 form; Described eccentric shaft 6 and rotating shaft 4 coaxial settings; Described eccentric shaft 6 is provided with bearing 21; Described piston 8 matches with the plane of rotation of bearing 21; The fuel-displaced place of the described little pump housing 7 is provided with adjustment screw 22; This adjustment screw 22 can be controlled fuel-displaced flow; Because be provided with spring 23 and steel ball 24 in the pump housing at adjustment screw 22 tops; The elastic force of spring 23 can make steel ball 24 block oily passage; And during piston 8 motion; The elastic force that the pressure of oil pressure overcomes spring 23 then can make oily passage open-minded; So the elastic force that adjustment screw 22 can control spring 23 just reaches the fuel-displaced uninterrupted of control, the little pump housing 7 bottoms are provided with filter screen 17; Filter screen 17 can be unlikely to the impurity in the oil pocket to flow in the pipeline, and affects the service life of oil pressure pump. Described filter screen 17 is connected by the filler opening 10 of pipeline and low pressure area C, be communicated with by oily passage 11 between low pressure area C and the zone of high pressure D, the oil outlet 12 of described zone of high pressure D is connected by the filler opening 9 of pipeline and fuel-displaced regional A, the oil discharge passage 18 of fuel-displaced regional A is connected with other workpiece by pipeline, described fuel-displaced regional A is provided with drainback passage 19, and this drainback passage 19 forms circulating oil path by pipeline and oil-in chamber E.

When the present invention works, start power supply, make magnetic valve 2 and motor 3 work, magnetic valve 2 can make valve rod move and open oil discharge passage 18, oil discharge passage 18 pipeline that pump is outer and the pipeline in the pump are connected, simultaneously, motor 3 work can make to be taken turns 14 rotation formation low-pressure area C and the hydraulic oil in the pump is sucked and be delivered to higher-pressure region D in the blade, because motor 3 rotates, can drive rotating shaft 4 rotates, eccentric shaft 6 with rotating shaft 4 coaxial settings can be rotated simultaneously, this rotatablely moves the piston 8 that matches with eccentric shaft upper bearing (metal) 21 is moved up and down, thereby make the little pump housing 7 interior generation higher-pressure region D, with the hydraulic oil in the D of this higher-pressure region from Pipeline transport to the pump housing 1 outside, make another workpiece carry out work.

And during powered-down, solenoid valve 2 quits work with motor 3, valve rod 26 can reset, at this moment oil discharge passage 18 is owing to the effect of valve rod 26 is closed, and drainback passage 19 is open-minded simultaneously, drainback passage 19 can be connected the oil pocket E in the pipeline outside the pump housing 1 and the pump housing 1, thereby hydraulic oil is got back in the oil pocket E from passage, waits for and working next time.

Claims (3)

1. oil pressure pump as the machining tool power source, has the pump housing (1), in the described pump housing (1), be provided with fuel-displaced zone (A) and oil pressure zone (B), it is characterized in that described fuel-displaced zone (A) controlled by solenoid valve (2), described oil pressure zone (B) is by motor (3) control, and described oil pressure zone (B) is divided into low pressure area (C) and zone of high pressure (D), and described low pressure area (C) is provided with impeller assembly, described impeller assembly is installed in the rotating shaft (4), and rotating shaft (4) is in transmission connection with motor (3); Described higher-pressure region (D) is by eccentric shaft (6); The little pump housing (7) and the piston (8) that is arranged in the little pump housing (7) form; Described eccentric shaft (6) and the coaxial setting of rotating shaft (4); Described eccentric shaft (6) matches with piston (8); The described little pump housing (7) bottom is provided with oil-filtering apparatus; Described oil-filtering apparatus is connected by the oil-in (10) of pipeline and low-pressure area (C); Be communicated with by oily passage (11) between low-pressure area (C) and higher-pressure region (D); The oil-out (12) of described higher-pressure region (D) is connected by the oil-in (9) of pipeline and fuel-displaced zone (A); Described fuel-displaced zone (A) is provided with drainback passage (19), and this drainback passage (19) forms circulating oil path by pipeline and oil-in chamber (E).

2. a kind of oil pressure pump as claimed in claim 1 as the machining tool power source, it is characterized in that described impeller assembly is divided into wheel (14) and blade foreign steamer (15) in the blade, wheel (14) is installed in the rotating shaft (4) in the blade, blade foreign steamer (15) is installed on the wheel seat (16), and described wheel seat (16) is connected with the little pump housing (7).

3. a kind of oil pressure pump as the machining tool power source as claimed in claim 1 is characterized in that described oil filter comprises a filter screen (17).

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