CN109940600A - A kind of electric pushrod having power-assisted - Google Patents
A kind of electric pushrod having power-assisted Download PDFInfo
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- CN109940600A CN109940600A CN201711380704.6A CN201711380704A CN109940600A CN 109940600 A CN109940600 A CN 109940600A CN 201711380704 A CN201711380704 A CN 201711380704A CN 109940600 A CN109940600 A CN 109940600A
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- electric pushrod
- power
- hydraulic
- piston
- power supply
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Abstract
A kind of electric pushrod having power-assisted, including mainly by cylinder barrel, hollow guide rod, piston, feed screw nut, lead screw, motor form electric pushrod, and the servomechanism being made of media fluid and hydraulic power supply；One end of cylinder barrel is equipped with liquid entrance in electric pushrod, is connected to hydraulic power supply.Hydraulic oil is under as the effect of the hydraulic power supply of auxiliary power, it is injected into the cavity in electric pushrod, pressure is generated to piston, realizes electronic, fluid power composite drive load movement, to promote the power output of electric pushrod, meets the needs of for driving robot arm to promote large-mass workpiece.
Description
Technical field
The power device of linear motion thrust and pulling force is provided the present invention relates to a kind of, in particular for robot arm drive
Dynamic power device.
Background technique
Electric pushrod is suitable for push-and-pull load and makees commonly used in externally output straight line push and pull power, driving load acting
The movements such as lifting, translation.
There are two types of general common electric pushrod driving methods: rotary motion being converted by lead screw one is motor and is pushed away
The straight line of bar pushes and pulls movement, and motor is can to realize servo push-and-pull positioning if servo motor；Another kind is motor driven liquid
Press pump, controlled by hydraulic valve it is hydraulic, push the piston of hydraulic cylinder or piston rod make straight line push-and-pull movement.
The disadvantage is that: motor needs to be equipped with biggish power and is just able to satisfy promotion load needs, causes overall structure in this way
Larger, manufacturing cost is high.When being applied to robotically-driven arm especially as power device, ability to work is not able to satisfy
The requirement of large-mass workpiece is promoted, main cause is that it undertakes that fan-out capability is limited, and power of motor and drive mechanism are larger.
Summary of the invention
To overcome disadvantages mentioned above, the object of the present invention is to provide a kind of power devices containing auxiliary power, can help
Robot greatly improves load capacity.Moreover, it can also be widely used in various mechanical devices.
The electric pushrod for having power-assisted of the invention, including mainly by cylinder barrel, hollow guide rod, piston, feed screw nut, lead screw,
The electric pushrod of motor form, and the servomechanism being made of media fluid and hydraulic power supply.Wherein, in electric pushrod
Motor moves along a straight line in cylinder barrel directly or indirectly through lead screw, feed screw nut push-and-pull piston and hollow guide rod；Hollow guide rod with
Piston, cylinder barrel form closed cavity, and one end of cylinder barrel is additionally provided with liquid entrance, is connected to hydraulic power supply.
When work, media fluid, such as hydraulic oil are injected into electricity under as the effect of the hydraulic power supply of auxiliary power
In the closed cavity that hollow guide rod and piston, cylinder barrel form in dynamic push rod, pressure is generated to piston, it is total with motor-driven lead screw
Push-and-pull movement is done with drive leader, electronic and hydraulic coupling compound action, to improve the power output of electric pushrod, satisfaction is used for
Robot arm is driven to promote the demand of large-mass workpiece.
In addition, hydraulic power supply referred to above can be oil pump, piston, more preferably inflatable accumulator, accumulator
Inside store high pressure gas.When this push rod needs to do the work of output pulling force, the hydraulic oil in accumulator is in high pressure gas
Under extruding, in the closed cavity that is formed into hollow guide rod and piston, cylinder barrel, presses to piston, help electric pushrod output more
Big retraction tension；When biggish load gravity, inertia force or motor power itself generate hollow guide rod and stretch out active force,
Hydraulic oil in piston press cavity enters accumulator, compresses gas therein, converts compression energy for energy and stores.
This electric pushrod for having power-assisted with inflatable accumulator, the hydraulic power provided do not need additional motor or
Power source further reduces driving power and overall structure when promoting load, improves motor utilization rate and working efficiency,
Robot or other mechanical device particularly suitable for lifting load lifting are used as power source.
Inflatable accumulator can be the gas-liquid isolating structures such as diaphragm type or bladder or piston type, be also possible to non-isolated
Formula structure.
Motor is also possible to servo motor, by the high-precision control of servo motor, realizes push rod quick response, accurately determines
Position.
Motor can directly be coupled with lead screw one end by shaft coupling, can also be coupled indirectly by gear or belt.
Lead screw one end inside hollow guide rod is protruded into, can be vacantly arranged, can also be floated branch by slip ring or piston
Support is in hollow guide rod inner wall.
Detailed description of the invention
Attached drawing 1 is structure schematic diagram of the invention.
Attached drawing 2 is another structure schematic diagram of the invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1.
The electric pushrod for having power-assisted as shown in Figure 1, wherein electric pushrod cylinder barrel (1) be built-in with hollow guide rod (2) and
Piston (3), piston (3) couple the lead screw pair being made of nut (4) and lead screw (5), and one end of lead screw (5) is joined by bearing (6)
It connects on the flange at tail end of cylinder barrel (1), the other end protrudes into hollow hollow guide rod (2) inside, and one end of lead screw (5) also passes through connection
Axis device (7) connection has motor (8), and motor (8) converts rotational motion into linear motion by lead screw (5) and nut (4), drives
Hollow guide rod (2) and piston (3) do straight line push-and-pull movement.Hollow guide rod (2) and piston (3), cylinder barrel (1) form closed cavity
(9), cylinder barrel (1) one end is additionally provided with hydraulic interface (10), and cavity (9) is connected to the hydraulic pump (11) as hydraulic power supply.
When work, hydraulic oil is injected cavity (9) by hydraulic pump (11), generates pressure to piston (3), hydraulic coupling and motor drive
Dynamic lead screw pulling force pulls hollow guide rod (2) mobile jointly by piston (3), and then drives load movement.
In this way, to improve the power output of electric pushrod, being met for driving due to electronic and hydraulic coupling compound action
The demand of robot arm promotion large-mass workpiece.
Embodiment 2.
As shown in Fig. 2, the other structures of the present embodiment are same as Example 1, and the difference is that: motor (8) is servo
Motor is to be coupled by gear set (14) with lead screw (5)；Lead screw (5) protrudes into the internal one end of hollow guide rod (2), passes through
Slip ring (12) floating support is in hollow guide rod (2) inner wall；Hydraulic power source is the bag type accumulator being attached on push-pull rod cylinder barrel
(13), internal to be pre-charged with the high pressure gas and hydraulic oil being isolated by leather bag, accumulator (13) is connect with hydraulic interface (10), for electricity
Dynamic push rod provides hydraulic booster.When for promoting loaded work piece, hydraulic oil in accumulator (13) high pressure gas in leather bag
Under extruding, entered in cavity (9) by hydraulic interface (10), pressed to piston (3), helped electric pushrod to export bigger retraction and draw
Power is controlled the corresponding position that load is promoted by servo motor (8)；When the load promoted needs descending motion, load gravity
It pushes piston (3) that the hydraulic oil in cavity (9) is reversely pushed back accumulator by hollow guide rod (2) and lead screw with motor (8), presses
Gas in contracting leather bag converts compression energy for energy and stores, spare for promoting load acting next time.
Hydraulic coupling is provided due to not needing additional motor or power source, motor general power and lead screw intensity can be selected
Smaller specification is selected, overall structure can also become smaller, further reduce driving power when promoting load and whole knot
Structure improves motor utilization rate and working efficiency, reduces high manufacturing cost, the machine particularly suitable for lifting load lifting
Device people or other machinery are used as power source.
Similarly, if the hydraulic interface of accumulator and cylinder barrel is changed into the other end on cylinder barrel, the electric-hydraulic combined push-pull rod of this example
It then can be used for pushing acting.
Electric-hydraulic combined push-pull rod provided by the present invention is described in detail above.Specific case used herein
Principle and implementation of the present invention are described, the above embodiments are only used to help understand core of the invention
Thought is thought.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
Claims (2)
1. a kind of electric pushrod for having power-assisted, it is characterised in that: including mainly by cylinder barrel, piston, hollow guide rod, feed screw nut,
The servomechanism of lead screw, the electric pushrod of motor form and media fluid and hydraulic power supply composition；Wherein, the one of cylinder barrel
End is additionally provided with liquid entrance, is connected to hydraulic power supply.
2. the electric pushrod according to claim 1 for having power-assisted, it is characterised in that: the hydraulic power supply is inflatable
Accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380704.6A CN109940600A (en) | 2017-12-20 | 2017-12-20 | A kind of electric pushrod having power-assisted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380704.6A CN109940600A (en) | 2017-12-20 | 2017-12-20 | A kind of electric pushrod having power-assisted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109940600A true CN109940600A (en) | 2019-06-28 |
Family
ID=67005544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711380704.6A Withdrawn CN109940600A (en) | 2017-12-20 | 2017-12-20 | A kind of electric pushrod having power-assisted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109940600A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255764A (en) * | 2020-02-18 | 2020-06-09 | 燕山大学 | Energy-saving electric servo actuator |
| CN116624442A (en) * | 2023-07-24 | 2023-08-22 | 南京理工大学 | Electric putter rocking arm braced system with moment of gravity compensation |
-
2017
- 2017-12-20 CN CN201711380704.6A patent/CN109940600A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255764A (en) * | 2020-02-18 | 2020-06-09 | 燕山大学 | Energy-saving electric servo actuator |
| CN111255764B (en) * | 2020-02-18 | 2021-07-16 | 燕山大学 | Energy-saving electric servo actuator |
| CN116624442A (en) * | 2023-07-24 | 2023-08-22 | 南京理工大学 | Electric putter rocking arm braced system with moment of gravity compensation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190628 |