CN107448381A

CN107448381A - Power set

Info

Publication number: CN107448381A
Application number: CN201710758306.7A
Authority: CN
Inventors: 张卓
Original assignee: Henan Mechanical and Electrical Vocational College
Current assignee: Henan Mechanical and Electrical Vocational College
Priority date: 2017-08-29
Filing date: 2017-08-29
Publication date: 2017-12-08
Anticipated expiration: 2037-08-29
Also published as: CN107448381B

Abstract

The present invention relates to a kind of power set, including pump, pump includes the pump housing, rotor is provided with the pump housing, the major diameter direction both ends of rotor are respectively arranged with the Oil Guide passage of multiple UNICOM's rotor circumference both sides, each Oil Guide passage often held is along rotor axial arranged for interval, the compartment between two neighboring Oil Guide passage in rotor with one end is used to coordinate with membrane support, also plugging block is equipped with rotor along major diameter direction guiding movement, plugging block has the first position for getting out of the way the Oil Guide passage in its shift motion and moves outwardly under the action of the centrifugal force and block the second place of the Oil Guide passage, the spring for setting the oriented plugging block to apply active force and force plugging block to be in first position on rotor.The invention provides a kind of power set that can reduce electric motor starting load.

Description

Power set

Technical field

The present invention relates to a kind of power set.

Background technology

For hydraulic power as a kind of common power set, it mainly includes motor and the pump by motor driven, wherein pump Performance directly decide the performances of power set.Existing pump " pump " as disclosed in Chinese patent CN101749228A, the pump Including pedestal, the pump housing is provided with pedestal, the pump housing has cylindrical hole inner chamber, and pivot center is provided with cylindrical hole inner chamber before and after The rotor of direction extension, section and the cylindrical hole inner chamber You Liangge point of contacts of rotor.The periphery of the pump housing is provided with hole, is oriented to and moves at hole Dynamic to be equipped with baffle plate, the hole is divided into inlet and liquid outlet by baffle plate, and rotor is cylinder, and one end and the rotor outer periphery face of dividing plate are slided Dynamic pushing tow coordinates.

In use, rotor clockwise rotates, the cavity of rotor both sides communicates with inlet and liquid outlet respectively, wherein with entering The cavity that liquid mouth communicates is low pressure chamber, and the cavity communicated with liquid outlet is high pressure chest, and dividing plate slides pushing tow with rotor all the time and coordinated Ensure that low pressure chamber and high pressure chest are obstructed, for rotor in rotation process, hydraulic oil is inhaled into low pressure chamber through oil inlet, with rotor Rotate extruding and discharged through oil-out, realize pump oil.Existing this pump has problems in that：Rotor is turned by motor driven It is dynamic, for corresponding motor, the larger not only power consumption of the starting load but also loss to motor is also larger, and in the prior art, motor Also hydraulic oil is filled with during startup in low pressure chamber, to complete that hydraulic oil acting could be completed the startup of motor, this is increased by The starting load of motor, lowest power when not only resulting in choice of electrical machine increased, and can also influence the normal energy consumption of motor.

The content of the invention

It is an object of the invention to provide a kind of power set that can reduce electric motor starting load.

In order to solve the above technical problems, technical scheme is as follows：

Power set, including pump, pump include the pump housing with cylindrical hole inner chamber, pivot center are provided with along the longitudinal direction in the pump housing Extension, cross section be elliptoid rotor, the cross section of rotor and bore have two point of contacts, be provided with the pump housing into Fluid apertures and fluid hole, are separated between inlet opening, fluid hole by dividing plate, and one end and the rotor outer periphery face of dividing plate are slided pushing tow and coordinated, The major diameter direction both ends of rotor are respectively arranged with the Oil Guide passage of multiple UNICOM's rotor circumference both sides, each Oil Guide passage edge often held Rotor axial arranged for interval, the compartment between two neighboring Oil Guide passage in rotor with one end is used for and membrane support Coordinate, also plugging block is equipped with along major diameter direction guiding movement in rotor, plugging block is described with getting out of the way in its shift motion The first position of Oil Guide passage and move outwardly under the action of the centrifugal force and block the second place of the Oil Guide passage, on rotor The spring for setting the oriented plugging block to apply active force and force plugging block to be in first position.

The spring is to be arranged at the stage clip on the outside of plugging block.

The longitudinal section of Oil Guide passage is arc-shaped structure, the center of circle of arc-shaped structure be in two ends of rotor Oil Guide passage it Between.

Beneficial effects of the present invention are：When rotor does not rotate in the present invention, by spring effect, plugging block is in first Put, the circumferential both sides of Oil Guide passage UNICOM rotor, during rotor ground zero, because rotating speed is also relatively slow, therefore centrifugal force is not enough to gram Take the active force of spring, therefore Oil Guide passage still turns on, the oil pressure of rotor circumference both sides is consistent, therefore the startup of rotor is born Load is smaller, and when the speed of rotor reaches certain value, the centrifugal force of plugging block overcomes the active force of spring, and plugging block moves outwardly To the second place, Oil Guide passage is blocked, and so as to realize normal fuel feeding, the compartment between two neighboring Oil Guide passage is used Coordinate in membrane support, so as to avoid dividing plate clamping stagnation in Oil Guide passage, it is ensured that the regular event of dividing plate and rotor.

Brief description of the drawings

Fig. 1 is view when pump is not actuated in power set embodiment of the present invention；

Fig. 2 is the view after pump startup in power set embodiment of the present invention；

Fig. 3 is the top view of rotor in Fig. 1；

Fig. 4 is enlarged drawing at A in Fig. 2；

Fig. 5 is the cooperation schematic diagram of brake device for electrical machinery and motor shaft in power set embodiment of the present invention；

Fig. 6 is the cooperation schematic diagram of motor shaft and bearing block in power set embodiment of the present invention；

Fig. 7 is the structural representation that spanner is adjusted in power set embodiment of the present invention；

Fig. 8 is Fig. 7 side view；

Fig. 9 is the cooperation schematic diagram of electric machine casing and the pump housing in power set embodiment of the present invention.

Embodiment

The implementation of power set is for example shown in Fig. 1 ~ 9 in the present invention：Including motor 37 and pump 36, pump 36 includes having cylindricality The pump housing 2 of hole inner chamber, it is elliptoid rotor 5 to be provided with pivot center extends along the longitudinal direction, cross section in the pump housing 2, is turned The cross section of son 5 has two point of contacts with bore, is provided with hole on the pump housing, guiding movement is equipped with one end and rotor at hole Outer peripheral face slides the dividing plate 9 for being used to hole being separated into inlet 8, liquid outlet 1 that pushing tow coordinates, and cylindrical hole inner chamber is also by dividing plate 9 The high pressure chest 3 with the low pressure chamber 11 of the UNICOM of inlet 8 and with the UNICOM of liquid outlet 1 is separated into, the major diameter direction both ends of rotor are set There is an Oil Guide passage 7 of UNICOM's rotor circumference both sides, the longitudinal section of Oil Guide passage 7 is arc-shaped structure, the center of circle of arc-shaped structure Between the Oil Guide passage of both sides, have per side Oil Guide passage it is multiple, each Oil Guide passage of each side along rotor axial arranged for interval, The compartment 71 between each Oil Guide passage per side can play a part of supporting clapboard 9 so as to avoid dividing plate board stagnant to leading In oily passage.The both ends of rotor are additionally provided with the pilot hole of major diameter direction extension of the guide direction along rotor, two pilot holes In be individually directed movement be equipped with plugging block 4, each plugging block 4 is corresponding with each self-corresponding Oil Guide passage 7 respectively, Oil Guide passage For the linear pattern passage perpendicular with plugging block moving direction, plugging block has in its shift motion gets out of the way corresponding Oil Guide passage 7 first position and move outwardly under the action of the centrifugal force and block the second place of corresponding Oil Guide passage 7, set on rotor 5 There is the spring that is used to corresponding plugging block apply active force and force plugging block be in first position corresponding with each plugging block, Spring is to be arranged at the stage clip 6 on the outside of plugging block in the present embodiment, and the outside end of plugging block is provided with plugging block end tooth 72, is turned Be provided with the rotor end tooth 73 for being adapted to interfix with plugging block end tooth on son, plugging block end tooth 72 with after the interfix of rotor end tooth 73 Labyrinth seal is formed, can so be ensured in rotor During regular rotation, the excellent sealing of Oil Guide passage, while is also formed to envelope The both ends support of sprue 4, ensure the anti-pressure ability of plugging block 4, ensure the service life that plugging block works under high oil pressure.In electricity When machine is not actuated, acted on by stage clip 6, each plugging block is in the first position for getting out of the way corresponding Oil Guide passage as shown in figure 1, motor exists In incipient start-up course, rotor speed is smaller, and the centrifugal force of plugging block is not enough to overcome the active force of stage clip, therefore Oil Guide Passage is always what is turned on, and the pressure of rotor circumference both sides is identical, and the resistance that rotor motion is subject to is just smaller, it is possible to achieve low negative Carrying and start, low-power machine can realizes that the load of rotor starts, after rotor speed reaches certain speed, such as motor After rotating speed reaches 1000r/min, the centrifugal force of rotor overcomes the elastic force of stage clip, and plugging block is displaced outwardly and seals Oil Guide passage Stifled, pump can realize normal fuel injection.During actual use, it can select suitable spring according to requirements or adjust the pre- of spring Tight amount carrys out regulation motor can realize normal fuel injection in what rotating speed.

Motor includes the electric machine casing 12 being connected with the pump housing, and electric machine casing 12, the pump housing 2 are front and rear to be arranged, is set in electric machine casing The motor shaft 18 that pivot center extends along the longitudinal direction is equipped with, dynamic sealing mechanism 30 is provided between motor shaft 18 and the pump housing 2, electricity The front side of dynamic sealing mechanism 30 is provided with discharge opeing nut 32 on arbor 18, is evenly distributed on the outward flange of discharge opeing nut 32 There are multiple breach 33.The annular groove 34 corresponding with discharge opeing nut 32 is provided with electric machine casing, annular groove 34 is in dynamic The front side of sealing mechanism, the bottom of annular groove 34 are provided with outage 35, and the upper end of electric machine casing is provided with air admission hole 31, entered Stomata 31 is in the front side of dynamic sealing mechanism 30, and breather cheek valve is provided with air admission hole 31, and gas can enter through the external world, but It is that internal liquid cannot discharge through breather cheek valve.It is provided with the pump housing and the liquid sucting port of high pressure chest UNICOM 10, liquid sucting port Liquid non-return valve is provided with 10, liquid can enter the pump housing through liquid sucting port, but cannot be discharged through liquid sucting port, liquid sucting port 10 It is connected with outage 35 by flexible pipe.In normal use, dynamic sealing mechanism may fail power assembly, now the liquid in pump Force feed can be through flow direction motor between dynamic sealing mechanism and motor shaft, after hydraulic oil is flowed on discharge opeing nut 32, the quilt of hydraulic oil 32 Get rid of into annular groove 34, and annular groove 34 is then connected through outage 35, liquid sucting port 10 and the low pressure chamber of pump, the hydraulic pressure of leakage Oil can be drawn into low pressure chamber again, participates in the pump oil of next stage.

Motor also includes being used for the brake device for electrical machinery for braking to motor shaft, and brake device for electrical machinery includes multiple along week To spaced apart brake units 13, each brake units 13 include can be along the brake shoes of motor shaft radial floating by spring 16, brake units also include the fixation steel disc 14 being oppositely arranged with brake shoes, and system is provided between brake shoes 16 and electric machine casing Move spring 15, magnet coil is provided with brake shoes 16, magnet coil electrically connects with the supply lines of motor.Figure middle term 17 represents bullet Spring guide cylinder, in motor normal power supply, magnet coil, which is powered, produces magnetic force and attracting with fixed steel disc 14, overcomes braking with this Acting force of the spring, brake shoes do not contact with motor shaft, when motor powers off, are acted on by tripping spring, each brake shoes with electricity Arbor contacts and realizes friction catch.Whole brake units are arranged on fixed electric machine casing, without being provided in electricity More loads need not be expended on arbor, during motor shaft normal rotation, help to save, while to solenoid also become It must be more prone to, whole device is easily realized, and is not easy to break down.

There is general bearing block in the end set of electric machine casing, general bearing block is adapted to the electricity of plurality of specifications size Arbor, its basic structure are：Bearing block includes frame-shaped body 21, and the clamping list of a pair of opposing is provided with frame-shaped body Member, two grip units are referred to as grip unit 20 and lower grip unit 19, and each grip unit includes and frame shape sheet The screw rod 23 of body threaded connection, the screw flight of upper and lower grip unit is oppositely oriented and is coaxially set, and the inner of screw rod is set Grip block 24 is equipped with, screw rod can rotate relative to grip block, gripped between two grip blocks for matching somebody with somebody with motor shaft 18 The bearing 25 of conjunction.The upper end of the screw rod of upper grip unit is provided with the upper montant jack 22 axially vertical with screw rod, lower bearing list The lower end of the screw rod of member is provided with the lower montant jack 50 axially vertical with screw rod, and upper and lower montant jack respectively constitutes two spiral shells The moment of torsion input structure of bar.The adjustment spanner of distance between grip block of the bearing block also including being used to adjust upper and lower grip unit, Adjust spanner as seen in figs. 5-6, it includes cross bar 27 and two can be along the montant 26 of the bearing of trend guiding movement of cross bar 27, montant 26 are slidably matched by the T-shaped termination 28 of its end and the guiding of T-slot 29 on cross bar 27, in use, two montants 26 of adjustment Position, two montants are respectively inserted in the corresponding montant jack of upper and lower grip unit, then move axle of the cross bar around screw rod Line rotates, and cross bar drives two montants to swing, so as to drive each screw rod to rotate, to realize the grip block of upper and lower grip unit Relative movement adjustment is moved away from adjusting, and to match the bearing of different-diameter, the adjustment mode has the beneficial effect that, two spiral shells The rotational angle of bar is consistent, therefore the displacement of the grip block of upper and lower grip unit is consistent, and this is ensured that No matter how general bearing block adjusts, and can ensure that the center of bearing is constant, prevents motor axis deviation and causes bearing Abrasion is very fast.In other embodiments of the invention, adjust spanner can also not as bearing block technical scheme a part, than Such as say that adjustment spanner can be sold separately in addition；Moment of torsion input structure on screw rod can also be flat head structure, now can be The driving groove coordinated with flat head structure rotation stop is set on montant.

Claims

1. power set, including pump, pump includes the pump housing with cylindrical hole inner chamber, and pivot center is provided with along front and back in the pump housing To extension, cross section be elliptoid rotor, cross section and the bore of rotor have two point of contacts, are provided with the pump housing Inlet opening and fluid hole, are separated between inlet opening, fluid hole by dividing plate, and one end and the rotor outer periphery face of dividing plate are slided pushing tow and matched somebody with somebody Close, it is characterised in that：The major diameter direction both ends of rotor are respectively arranged with the Oil Guide passage of multiple UNICOM's rotor circumference both sides, often hold Each Oil Guide passage along rotor axial arranged for interval, the compartment between two neighboring Oil Guide passage in rotor with one end For coordinating with membrane support, plugging block also is equipped with along major diameter direction guiding movement in rotor, plugging block is in its shift motion It is interior that there is the first position for getting out of the way the Oil Guide passage and move outwardly under the action of the centrifugal force and block the Oil Guide passage The second place, the spring for setting on rotor the oriented plugging block to apply active force and force plugging block to be in first position.

2. power set according to claim 1, it is characterised in that：The spring is to be arranged at the pressure on the outside of plugging block Spring.

3. power set according to claim 1, it is characterised in that：The longitudinal section of Oil Guide passage is arc-shaped structure, circle The center of circle of arcuate structure is between two ends of rotor Oil Guide passage.