CN204041378U - Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor - Google Patents
Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor Download PDFInfo
- Publication number
- CN204041378U CN204041378U CN201420245440.9U CN201420245440U CN204041378U CN 204041378 U CN204041378 U CN 204041378U CN 201420245440 U CN201420245440 U CN 201420245440U CN 204041378 U CN204041378 U CN 204041378U
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- electric motor
- linear electric
- connecting rod
- crank
- plunger
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Abstract
The utility model discloses a kind of crank-connecting rod transmission type hydraulic press pump adopting linear electric motor, it comprises at least one plunger, described plunger is movably set in a cavity volume, it is characterized in that: also comprise linear electric motor, the motor secondary of described linear electric motor is provided with at least one tooth bar, and at least one gear engages with described tooth bar; Described plunger is connected to described gear eccentricity position by a toggle, described toggle and described gear and plunger all hinged.The crank-connecting rod transmission type hydraulic press pump of employing linear electric motor of the present utility model make full use of connecting rod transmission angle and pressure angle large in, be stroke amplifying mechanism, the now exportable low pressure and mass flow liquid of oil hydraulic pump; Transmission angle and pressure angle little in, connecting rod is force amplificatory structure, now the exportable high-pressure low-flow liquid of oil hydraulic pump.
Description
Technical field
The utility model belongs to mechanical field, relates to a kind of crank-connecting rod transmission type hydraulic press pump adopting linear electric motor, in particular for the pluger type hydraulic pump of hudraulic lift drive system.
Background technique
At present, in the Metering Flow Control Circuits Hydraulic Adjustable Speed technology of industrial field extensive use, mainly contain the Metering Flow Control Circuits that metering pump and throttle valve form and the pump speed control system two kinds driven by variable displacement pump.Powerful, flow and the continuously adjustable oil hydraulic pump of pressure mainly cam-type axial piston pump, but the structure of cam-type axial piston pump is very complicated, particularly plunger will bear the moment formed by radial force, thus its friction condition is worsened, and working life and mechanical efficiency reduce.In addition, be connected to the piston shoes complex structure of plunger lower end, friction condition is extremely severe, adds complicated flow system etc., makes the manufacturing process of plunger pump extremely complicated.Traditional cam-type axial piston pump also has a critical defect that can not be ignored, i.e. instability of flow, produce so-called pulsation rate, as wish reduces flow pulse rate, not only need the number increasing plunger, and need the number of plunger to be prime number, such as 3,5,7,11,13,17,19,23 etc.Therefore, the plunger of excessive number is actual is a kind of helpless selection, not only cause mechanism complicated, and manufacture cost remains high.At present, extremely low in the energy utilization rate of the Metering Flow Control Circuits of industrial field extensive use, being only applicable to the occasion of small-power transmission, needing occasion that is high-power, continuous speed adjustment, often adopting the pump speed control system that variable displacement pump drives.And powerful, flow and the continuously adjustable oil hydraulic pump of pressure mainly cam-type axial piston pump, former high-quality cam-type axial piston pump depends on import, mainly the product of German BOSCH-REXROTH and Kawasaki, Japan company, and price is extremely expensive.With the citing of the cam-type axial piston pump of engineering machinery regular size, separate unit price is generally more than 30,000 yuans.Recently, Shandong Zhong Chuan hydraulic pressure is successfully produced can the high-quality oil hydraulic pump of substituting import one, and separate unit price is also at about 20,000 yuans.Fancy price like this causes enormous pressure to downstream industry.
Authorization Notice No. is the double-action plunger pump that the Chinese patent of CN 102207066 B also discloses a kind of symmetrical toggle link driving, but this double-action plunger pump merely illustrates afterbody mechanical transmission, if the reducing gear of front end and drive motor, will find that the integral layout of this double-action plunger pump is very asymmetric in increase.In addition, the elbow-bar mechanism in this double-action plunger pump is hinged on the eccentric pin shaft of gear face, and this bearing pin is overhang, force-bearing situation extreme difference.
Linear motor is one of New-type electric machine of Recent study development, is a kind of power plant electric energy being directly changed into straight line motion.Linear electric motor have many outstanding advantages, and as starting performance is good, easy to maintenance, structure is simple, in some occasion, linear electric motor have the application of its uniqueness, are that electric rotating machine institute is irreplaceable.Linear electric motor are especially applicable to being applied to needs type frequently reciprocating, have suitable thrust, the occasion of suitable movement velocity and suitable positioning precision.
Summary of the invention
In order to solve the problem, the utility model provide a kind of structure simple, with low cost, can the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor of continuously adjusting flow rate and pressure.
The technical solution of the utility model is to provide a kind of crank-connecting rod transmission type hydraulic press pump adopting linear electric motor, it comprises two plungers, described plunger is movably set in a cavity volume, it is characterized in that: also comprise linear electric motor, the motor secondary of described linear electric motor is provided with two tooth bars; With described motor secondary for symmetry axis, arrange two gears in the bilateral symmetry of described motor secondary, gear described in two engages with tooth bar described in respectively; Described plunger is all connected to gear eccentricity position described in by a toggle, described toggle and described gear and plunger all hinged.
Preferably, the end of described cavity volume is equipped with in-line and oil extraction road; Described in-line is communicated with fuel tank by one-way valve, and described oil extraction road is connected with external hydraulic system by one-way valve.
Preferably, the outlet of the one-way valve on described oil extraction road communicates with voltage stabilizer, and hydraulic executing system is led in the outlet of voltage stabilizer.
Preferably, described voltage stabilizer is connected to digital pressure switch.
Preferably, the mover of servo linear motor described in two is controlled by two-axle interlocking numerical control system.
The crank-connecting rod transmission type hydraulic press pump of employing linear electric motor of the present utility model has the following advantages:
1) in mechanism, the geometrical shape of each basic structure is fairly simple, manufactures conveniently.
2) adopt linear electric motor drive, do not need rotation motion be in line motion additional device, relative to the device driven by common AC motor, whole system weight and volume declines, and noise is also lower simultaneously, and efficiency is high, free from environmental pollution, be a kind of device of greenization.
3) adopt linear electric motor to substantially increase automation and the equipment of device, service behaviour obtains to be improved greatly, is the developing direction of equipment of new generation.
4) connecting rod in this device is non-linear mechanism, connecting rod transmission angle and pressure angle large in, be stroke amplifying mechanism, the now exportable low pressure and mass flow liquid of oil hydraulic pump; Transmission angle and pressure angle little in, connecting rod is force amplificatory structure, now the exportable high-pressure low-flow liquid of oil hydraulic pump.
5) duplex position structure is adopted, stress balance, can effective extending structure life-span.。
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model adopts the crank-connecting rod transmission type hydraulic press pump most preferred embodiment of linear electric motor.
Embodiment
Below embodiment of the present utility model is described in further detail.
As shown in Figure 1, the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor of the present utility model comprises two linear electric motor 10, and these linear electric motor 10 comprise motor secondary 12 and the electric motor primary 14 of rod.Motor secondary 12 is connected a two-sided rack 16(or directly in motor secondary 12, process the two-sided rack 16), both sides respectively arrange one with tooth bar 16 meshed gears 18 and gear 18 '.Certainly, those of ordinary skill in the art according to thinking of the present invention, can be easy to expect a tooth bar 16 that motor secondary 12 is connected, arrange several gear 18 and gears 18 ' in the same side of tooth bar 16; Or two independent tooth bars 16 are set in motor secondary 12 both sides, the modes such as multiple gear 18 and gear 18 ' are set along tooth bar 16 direction, equally also can realize the function of oil hydraulic pump.′
The both sides of motor secondary 12 respectively arrange left plunger 20 and a right plunger 20 '.Left plunger 20 and right plunger 20 ' are placed in respective cavity volume ordinatedly; The end of left and right two cavity volumes (i.e. the cavity volume of left plunger 20 and right plunger 20 ' correspondence, lower same) is provided with into oil extraction road (not shown); In-line (not shown) is communicated with fuel tank (not shown) by one-way valve (not shown), and oil extraction road (not shown) is connected with external hydraulic system (not shown) by one-way valve.The outlet of the one-way valve (not shown) on oil extraction road communicates with voltage stabilizer (not shown), and hydraulic executing system (not shown) is led in the outlet of voltage stabilizer; Voltage stabilizer is connected to digital pressure switch (not shown).Entering oil extraction road, one-way valve, fuel tank, voltage stabilizer, digital pressure switch and hydraulic executing system is known by industry and the structure extensively adopted, and non-the utility model innovative point place.
Left plunger 20 and right plunger 20 ', by toggle 22 and toggle 22 ', are hinged on the position of gear 18 and gear 18 ' and gear 18 and gear 18 ' bias.
Linear electric motor 10 drive motor secondary 12 moves up or down, thus the tooth bar 16 be fixed in motor secondary 12 also can corresponding symmetric motion.
When tooth bar 16 moves downward, two side gears 18 and gear 18 ' can be driven to do respectively clockwise and counterclockwise movement with gear 18 and gear 18 ', drive crank-connecting rod 22 and the toggle 22 ' mechanism of both sides, drive left plunger 20 and the symmetric motion to the inside simultaneously of right plunger 20 ', at this moment, the volume enlargement of left and right two cavity volumes, form negative pressure, hydraulic oil in fuel tank under atmospheric pressure, opens one-way valve below, enters respectively in the cavity volume of left plunger 20 and right plunger 20 '.
When tooth bar 16 moves upward, two side gears 18 and gear 18 ' can be driven to do respectively counterclockwise and clockwise movement with gear 18 and gear 18 ', drive crank-connecting rod 22 and the toggle 22 ' mechanism of both sides, drive left plunger 20 and the symmetric motion to the inside simultaneously of right plunger 20 '.At this moment, the smaller volume of the cavity volume of left plunger 20 and right plunger 20 ' correspondence, to fluid mineralization pressure, leads to the closed check valve of fuel tank below making, the one-way valve opens simultaneously, realizes pressure oil and exports.
Above embodiment is only the utility model a kind of mode of execution wherein, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (5)
1. adopt a crank-connecting rod transmission type hydraulic press pump for linear electric motor, it comprises two plungers, and described plunger is movably set in a cavity volume, it is characterized in that: also comprise linear electric motor, the motor secondary of described linear electric motor is provided with two tooth bars; With described motor secondary for symmetry axis, arrange two gears in the bilateral symmetry of described motor secondary, gear described in two engages with tooth bar described in respectively; Described plunger is all connected to gear eccentricity position described in by a toggle, described toggle and described gear and plunger all hinged.
2. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 1, is characterized in that: the end of described cavity volume is equipped with in-line and oil extraction road; Described in-line is communicated with fuel tank by one-way valve, and described oil extraction road is connected with external hydraulic system by one-way valve.
3. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 2, is characterized in that: the outlet of the one-way valve on described oil extraction road communicates with voltage stabilizer, and hydraulic executing system is led in the outlet of voltage stabilizer.
4. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 3, is characterized in that: described voltage stabilizer is connected to digital pressure switch.
5. the crank-connecting rod transmission type hydraulic press pump of employing linear electric motor according to claim 4, is characterized in that: the mover of linear electric motor described in two is controlled by two-axle interlocking numerical control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245440.9U CN204041378U (en) | 2014-05-14 | 2014-05-14 | Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245440.9U CN204041378U (en) | 2014-05-14 | 2014-05-14 | Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041378U true CN204041378U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245440.9U Expired - Fee Related CN204041378U (en) | 2014-05-14 | 2014-05-14 | Adopt the crank-connecting rod transmission type hydraulic press pump of linear electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994044A (en) * | 2014-05-14 | 2014-08-20 | 苏州农业职业技术学院 | Crank connecting rod transmission type hydraulic pump with linear motor |
-
2014
- 2014-05-14 CN CN201420245440.9U patent/CN204041378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994044A (en) * | 2014-05-14 | 2014-08-20 | 苏州农业职业技术学院 | Crank connecting rod transmission type hydraulic pump with linear motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150514 |
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| EXPY | Termination of patent right or utility model |