CN208057582U - The oil return apparatus of hydraulic tool - Google Patents
The oil return apparatus of hydraulic tool Download PDFInfo
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- CN208057582U CN208057582U CN201820501037.6U CN201820501037U CN208057582U CN 208057582 U CN208057582 U CN 208057582U CN 201820501037 U CN201820501037 U CN 201820501037U CN 208057582 U CN208057582 U CN 208057582U
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Abstract
The utility model provides a kind of oil return apparatus of hydraulic tool, belongs to field of mechanical technique.It solves the problems such as existing hydraulic tool oil return is inconvenient.The oil return apparatus of this hydraulic tool includes fuel tank and hydraulic cylinder, piston and resetting spring are equipped in hydraulic cylinder, piston will be divided into oil suction chamber and oil back chamber inside hydraulic cylinder, fuel tank is connected by in-line with oil suction chamber, hydraulic pump is connected on in-line, fuel tank is connected by oil return line with oil back chamber, it is equipped on piston in rod-shaped mandril, piston is equipped with the oil leak hole of perforation oil suction chamber and oil back chamber, mandril is located at the end at oil suction chamber with the plugging block for separating oil leak hole and oil suction chamber, it is equipped in oil back chamber when piston completes the shoulder block contacted for mandril after feeding displacement, the elastic mechanism for making oil leak hole be connected to oil suction chamber and oil back chamber to the pop-up of oil suction chamber side section mandril after piston completes feeding displacement is additionally provided on mandril and/or hydraulic cylinder.The utility model has many advantages, such as that high degree of automation, oil return are quick.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of oil-returning structure, more particularly to a kind of hydraulic tool returns
Oily device.
Background technology
Hydraulic tool is exactly organically to be integrated into a whole hydraulic system and common tool, and hydraulic tool includes：
Hydraulic spanner, hydraulic spanner special electric pump, hydraulic jack, hydraulic bolt tensioning jack, hydraulic flange separator, hydraulic nut
Splitter, hydraulic tongs etc., hydraulic tool have the advantages that efficient, convenient.Be equipped in the hydraulic cylinder of hydraulic tool resetting spring with
And piston rod, the outer end of piston rod are fixed with working end.When work, hydraulic pump rotation is driven by motor, it will be in shoe cream room
Pressure oil is pressed into the state in hydraulic cylinder and hydraulic end being pushed to be at work；Stop when needing to make hydraulic end
When work, switch module is closed, and is left the motor off work, then oil leak hole is opened, at this time under the action of resetting spring, will be pressed
Power oil returns in shoe cream room.
Such as Chinese patent literature data discloses a kind of Electric hydraulic tool [application number：201210578428.5；It authorizes
Notification number：CN103072124B] comprising ontology and the hydraulic end on ontology, ontology is interior to have oil cylinder and oil storage
Chamber is connected between oil cylinder and shoe cream room by oil circuit, and also having on ontology can be pressed into the power oil in shoe cream room in oil cylinder
Pressing mechanism, hydraulic end is located in oil cylinder, has the oil leak hole that shoe cream room and oil cylinder are connected on ontology, on ontology
Also there is the switch module when its unlatching can be such that pressing mechanism acts, switch module includes the switch on the body and hinged of being connected
Handle on the body, handle can be resisted against on switch after the swing of its hinged place, and switch is connected on pressing mechanism by conducting wire
Have between power supply, between switch module and oil leak hole and opens and the plug part of draining bore closure can be pressurizeed when switch module
Mechanism uses plunger pump and can drive the motor of plunger pump work, and hydraulic end is card pressure head, is had in the cylinder body of oil cylinder
There is pulse overflow valve and the pulse overflow valve is located at the right side of oil cylinder, pulse overflow valve is connected by circuit and pressing mechanism,
And pressing mechanism stopping can be made to act by circuit after pulse overflow valve events.
Above-mentioned Electric hydraulic tool has pressure holding function and is convenient for one-handed performance, but passes through switch in use
Component makes plug part block oil leak hole again, and such structure design makes oil inlet and draining complicate, and draining is not directly quick enough,
Oil return not enough automates.
Invention content
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, provide it is a kind of it is simple in structure, from
The oil return apparatus of dynamicization degree height and the quick hydraulic tool of oil return.
The purpose of this utility model can be realized by following technical proposal：A kind of oil return apparatus of hydraulic tool, including
Fuel tank and hydraulic cylinder, are equipped with piston and resetting spring in the hydraulic cylinder, the piston will be divided into inside hydraulic cylinder into
Oil pocket and oil back chamber, the fuel tank are connected by in-line with oil suction chamber, and hydraulic pump, institute are connected on the in-line
The fuel tank stated is connected by oil return line with oil back chamber, which is characterized in that is equipped on the piston in rod-shaped mandril, institute
The piston stated is equipped with the oil leak hole of perforation oil suction chamber and oil back chamber, and the mandril is located at the end at oil suction chamber with being used for
The plugging block that oil leak hole and oil suction chamber are separated, interior be equipped with of the oil back chamber contact after piston completes feeding displacement for mandril
Shoulder block, be additionally provided with mandril on the mandril and/or hydraulic cylinder after piston completes feeding displacement to oil suction chamber side section
Pop-up makes the elastic mechanism of oil leak hole connection oil suction chamber and oil back chamber.
When the oil return apparatus of this hydraulic tool does not work, the elastic force that resetting spring provides makes piston be pressed in plugging block
Hydraulic cylinder, at this time plugging block be plugged in piston and separate oil leak hole and oil suction chamber, when work, hydraulic pump makes the hydraulic pressure in fuel tank
Oil is rapidly introduced into oil suction chamber by in-line, and the hydraulic fluid pressure in oil suction chamber overcomes the elastic force of elastic mechanism so that blocks
Block is plugged in piston and is connected to oil suction chamber to avoid oil leak hole always, and after piston completes feeding displacement, hydraulic pump is stopped, top
Bar contacts shoulder block and plugging block is made to obtain the power-assisted to oil suction chamber displacement, in addition the elastic force effect of elastic construction, and mandril is to oil inlet
Chamber side section pops up so that plugging block is far from piston action, so that oil leak hole connection oil suction chamber and oil back chamber, in oil suction chamber
Hydraulic oil flow into oil back chamber from oil leak hole, then flow back into fuel tank from oil return line, complete oil return.
The oil return apparatus of this hydraulic tool eliminates the setting of previous solenoid valve or motor so that and it is compact-sized simple,
Manufacturing cost and compact are reduced, and oil return, high degree of automation, when piston is completed is manually operated without operating personnel
Energy oil return, oil return rapid reaction, oil return are efficient after feeding displacement.
In the oil return apparatus of above-mentioned hydraulic tool, the elastic mechanism includes the end that mandril is located in oil back chamber
It is arranged with spring one, the outer end of the spring one is located at the end set in oil back chamber beyond mandril.When piston feeds displacement
When, spring one contacts shoulder block first, and spring one plays cushioning effect, after avoiding mandril clashing and breaking, piston from completing feeding displacement, mandril
End in oil back chamber contacts shoulder block, and mandril obtains the reaction force of shoulder block offer to the displacement of oil suction chamber side at this time, adds
The elastic force that upper spring one provides so that mandril is smoothly quickly popped up to oil suction chamber side section, to drive plugging block far from piston
Displacement so that oil leak hole is connected to oil suction chamber and oil back chamber to complete oil return.
In the oil return apparatus of above-mentioned hydraulic tool, the end that the mandril is located in oil back chamber is opened up for spring one
The annular groove that inner end is caught in.Spring one cannot be detached from mandril, good operating stability in this way.
In the oil return apparatus of above-mentioned hydraulic tool, the elastic mechanism includes the spring two that top stem casing is equipped with, institute
The spring two stated is between piston and plugging block and spring two provides elastic force and plugging block is made to have becoming far from piston always
Gesture, the piston have the installation cavity for accommodating spring two.When not working, resetting spring provides elastic force and makes piston by plugging block
It is pressed in hydraulic cylinder, spring two is in compressive state, later oil inlet at this time, because the pressure into the hydraulic oil of oil suction chamber is more than
The elastic force of spring two, thus during oil inlet plugging block still in be plugged in piston to avoid oil leak hole be connected to oil suction chamber shape
State, after piston completes feeding displacement, mandril contacts shoulder block, mandril the reaction force of shoulder block offer is provided and to oil suction chamber side position
It moves, the elastic force of spring two accelerates plugging block far from piston displacement, to ensure that oil leak hole is connected to the mistake of oil suction chamber and oil back chamber at this time
Cheng Shunli improves reliability so that oil return is smooth.
In the oil return apparatus of above-mentioned hydraulic tool, the quantity of the oil leak hole is multiple and is arranged around mandril,
Each oil leak hole is communicated in installation cavity, and plugging block covers installation cavity port when the plugging block is plugged in piston.It ties in this way
Structure characteristics of compact layout, it is easy to process, and multiple oil leak holes ensure that oil return efficiency.
In the oil return apparatus of above-mentioned hydraulic tool, the edge of the plugging block towards the end of piston has protrusion
And in the flange collar of round.Flange collar reduces the contact area of plugging block and piston, reduces requirement on machining accuracy, and flange collar is to enclose
Shape face contact piston, good airproof performance when closure.
In the oil return apparatus of above-mentioned hydraulic tool, the mandril be located at the end at oil suction chamber have protrude from envelope
Sprue and the protrusion for being used to contradict hydraulic cylinder.Protrusion avoids plugging block clashing and breaking to ensure the plugging effect of plugging block.
In the oil return apparatus of above-mentioned hydraulic tool, the quantity of the oil return line is at least two.Oil return is imitated in this way
Rate is high.
Compared with prior art, the oil return apparatus of this hydraulic tool is compact-sized simple, and manufacturing cost is low, and is not necessarily to
Manual operation, realizes automatic oil return, oil return is efficient, good operating stability.
Description of the drawings
Fig. 1 is the fundamental diagram of the oil return apparatus of this hydraulic tool.
Fundamental diagram when Fig. 2 is the oil return apparatus oil return of this hydraulic tool.
Fig. 3 is the structural schematic diagram of the oil return apparatus of this hydraulic tool.
Fig. 4 is the schematic enlarged-scale view at circle A in Fig. 3.
In figure, 1, fuel tank；2, hydraulic cylinder；2a, oil suction chamber；2b, oil back chamber；2c, shoulder block；3, piston；3a, installation cavity；4,
Resetting spring；5, in-line；6, hydraulic pump；7, oil return line；8, mandril；8a, annular groove；8b, protrusion；9, oil leak hole；10, it seals
Sprue；10a, flange collar；11, spring one；12, spring two.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in figures 1 and 3, the oil return apparatus of this hydraulic tool includes fuel tank 1 and hydraulic cylinder 2, is equipped with and lives in hydraulic cylinder 2
Plug 3 and resetting spring 4, piston 3 will be divided into oil suction chamber 2a and oil back chamber 2b inside hydraulic cylinder 2, fuel tank 1 by in-line 5 with
Oil suction chamber 2a is connected, and hydraulic pump 6 is connected on in-line 5, and hydraulic pump 6 is driven by motor, and fuel tank 1 is by oil return line 7 and returns
Oil pocket 2b is connected, and the quantity of oil return line 7 is two in the present embodiment, is equipped on piston 3 in rod-shaped mandril 8, on piston 3
Oil leak hole 9 equipped with perforation oil suction chamber 2a and oil back chamber 2b, mandril 8 are located at the end at oil suction chamber 2a with for by oil leak hole
9 plugging blocks 10 separated with oil suction chamber 2a, oil back chamber 2b is interior to be equipped with when piston 3 completes the gear contacted for mandril 8 after feeding displacement
It is additionally provided with mandril 8 on shoulder 2c, mandril 8 and/or hydraulic cylinder 2 after piston 3 completes feeding displacement to oil suction chamber 2a side section bullets
Oil leak hole of sening as an envoy to 9 is connected to the elastic mechanism of oil suction chamber 2a and oil back chamber 2b.
It further describes in detail, elastic mechanism includes that the end sleeve that is located in oil back chamber 2b of mandril 8 is equipped with spring 1, spring one
11 outer end is located at the end set in oil back chamber 2b beyond mandril 8, and in order to avoid spring 1 is detached from mandril 8, mandril 8 is located at
End in oil back chamber 2b opens up the annular groove 8a being caught in for one 11 inner end of spring.Elastic mechanism further includes mandril in the present embodiment
8 springs 2 12 being arranged with, spring 2 12 is between piston 3 and plugging block 10 and spring 2 12 provides elastic force and makes plugging block
10 there is the trend far from piston 3, piston 3 to have the installation cavity 3a for accommodating spring 2 12 always.
The quantity of oil leak hole 9 is four and is arranged around mandril 8 that each oil leak hole 9 is communicated in installation cavity in the present embodiment
3a, plugging block 10 covers the ports installation cavity 3a when plugging block 10 is plugged in piston 3.As shown in figure 4, sealing when in order to block
Property it is good, plugging block 10 towards the end of piston 3 edge have protrusion and in round flange collar 10a；In order to avoid plugging block 10
Clashing and breaking, mandril 8, which is located at the end at oil suction chamber 2a, has the protrusion 8b for protruding from plugging block 10 and being used to contradict hydraulic cylinder 2.
When the oil return apparatus of this hydraulic tool does not work, the elastic force that resetting spring 4 provides, piston 3 compresses closeouts, protrusion
Portion 8b contacts at hydraulic cylinder 2, and spring 2 12 is in compressive state, and plugging block 10 is plugged in piston 3 and covers the ports installation cavity 3a,
Oil leak hole 9 separates with oil suction chamber 2a；When work, hydraulic pump 6 works so that the hydraulic oil in fuel tank 1 passes through in-line 5 rapidly
Into oil suction chamber 2a, the hydraulic fluid pressure in oil suction chamber 2a overcomes the elastic force of spring 2 12, and plugging block 10 is still located during oil inlet
In being plugged in state of the piston 3 to avoid the connection oil suction chamber of oil leak hole 9 2a, continue oil inlet later, piston 3 continues to feed, spring
One 11 contact shoulder block 2c first, and spring 1 plays cushioning effect, avoids 8 clashing and breaking of mandril；As shown in Fig. 2, when piston 3 complete into
After displacement, hydraulic pump 6 is stopped, and the end that mandril 8 is located in oil back chamber 2b contacts shoulder block 2c, and mandril 8 is kept off at this time
Reaction force that shoulder 2c is provided and to oil suction chamber 2a side displacements, the bullet of the elastic force provided plus spring 1 and the offer of spring 2 12
Power so that mandril 8 is smoothly quickly popped up to oil suction chamber 2a side sections, to drive plugging block 10 far from 3 displacement of piston so that let out
Oilhole 9 is connected to oil suction chamber 2a and oil back chamber 2b, and the hydraulic oil in oil suction chamber 2a flows into oil back chamber 2b from oil leak hole 9, then from oil return
Road 7 is flow back into fuel tank 1, completes automatic oil return.
The content not being described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.Herein
Described in specific embodiment be only the spirit of the present invention is given an example.The utility model technical field
Technical staff can make various modifications or additions to the described embodiments or substitute by a similar method, but
Without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (8)
1. a kind of oil return apparatus of hydraulic tool, including fuel tank（1）And hydraulic cylinder（2）, the hydraulic cylinder（2）It is interior to be equipped with piston
（3）And resetting spring（4）, the piston（3）By hydraulic cylinder（2）Inside is divided into oil suction chamber（2a）And oil back chamber（2b）, institute
The fuel tank stated（1）Pass through in-line（5）With oil suction chamber（2a）It is connected, the in-line（5）On be connected with hydraulic pump（6）,
The fuel tank（1）Pass through oil return line（7）With oil back chamber（2b）It is connected, which is characterized in that the piston（3）On be equipped with
In rod-shaped mandril（8）, the piston（3）It is equipped with perforation oil suction chamber（2a）And oil back chamber（2b）Oil leak hole（9）, described
Mandril（8）Positioned at oil suction chamber（2a）The end at place has for by oil leak hole（9）With oil suction chamber（2a）The plugging block of separation
（10）, the oil back chamber（2b）Interior be equipped with works as piston（3）For mandril after completion feeding displacement（8）The shoulder block contacted（2c）, institute
The mandril stated（8）And/or hydraulic cylinder（2）On be additionally provided with and work as piston（3）By mandril after completion feeding displacement（8）To oil suction chamber（2a）
Side section pop-up makes oil leak hole（9）It is connected to oil suction chamber（2a）And oil back chamber（2b）Elastic mechanism.
2. the oil return apparatus of hydraulic tool according to claim 1, which is characterized in that the elastic mechanism includes mandril
（8）Positioned at oil back chamber（2b）Interior end sleeve is equipped with spring one（11）, the spring one（11）Outer end exceed mandril（8）Position
In oil back chamber（2b）Interior end set.
3. the oil return apparatus of hydraulic tool according to claim 2, which is characterized in that the mandril（8）Positioned at oil return
Chamber（2b）Interior end is opened up for spring one（11）The annular groove that inner end is caught in（8a）.
4. the oil return apparatus of hydraulic tool according to claim 2 or 3, which is characterized in that the elastic mechanism includes
Mandril（8）The spring two being arranged with（12）, the spring two（12）Positioned at piston（3）And plugging block（10）Between and spring two
（12）Elastic force is provided and makes plugging block（10）Always have far from piston（3）Trend, the piston（3）With receiving spring
Two（12）Installation cavity（3a）.
5. the oil return apparatus of hydraulic tool according to claim 4, which is characterized in that the oil leak hole（9）Quantity
For it is multiple and surround mandril（8）Setting, each oil leak hole（9）It is communicated in installation cavity（3a）, the plugging block（10）It is plugged in
Piston（3）When plugging block（10）By installation cavity（3a）Port covers.
6. the oil return apparatus of hydraulic tool according to claim 5, which is characterized in that the plugging block（10）Direction is living
Plug（3）End edge have protrusion and in round flange collar（10a）.
7. the oil return apparatus of hydraulic tool according to claim 6, which is characterized in that the mandril（8）Positioned at oil inlet
Chamber（2a）The end at place, which has, protrudes from plugging block（10）And for contradicting hydraulic cylinder（2）Protrusion（8b）.
8. the oil return apparatus of hydraulic tool according to claim 1, which is characterized in that the oil return line（7）Quantity
At least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820501037.6U CN208057582U (en) | 2018-04-10 | 2018-04-10 | The oil return apparatus of hydraulic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820501037.6U CN208057582U (en) | 2018-04-10 | 2018-04-10 | The oil return apparatus of hydraulic tool |
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| Publication Number | Publication Date |
|---|---|
| CN208057582U true CN208057582U (en) | 2018-11-06 |
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ID=63984321
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820501037.6U Active CN208057582U (en) | 2018-04-10 | 2018-04-10 | The oil return apparatus of hydraulic tool |
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| CN (1) | CN208057582U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702783A (en) * | 2019-03-20 | 2019-05-03 | 浙江厚达智能科技股份有限公司 | Hit medicinal cutting knife assembly |
| CN109702784A (en) * | 2019-03-20 | 2019-05-03 | 浙江厚达智能科技股份有限公司 | Chinese medicine cutting machine |
| CN111872243A (en) * | 2020-07-27 | 2020-11-03 | 昆山盛世伟图电子科技有限公司 | Intelligent control hydraulic tool |
-
2018
- 2018-04-10 CN CN201820501037.6U patent/CN208057582U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702783A (en) * | 2019-03-20 | 2019-05-03 | 浙江厚达智能科技股份有限公司 | Hit medicinal cutting knife assembly |
| CN109702784A (en) * | 2019-03-20 | 2019-05-03 | 浙江厚达智能科技股份有限公司 | Chinese medicine cutting machine |
| CN109702784B (en) * | 2019-03-20 | 2020-08-07 | 浙江厚达智能科技股份有限公司 | Traditional chinese medicine cutter |
| CN109702783B (en) * | 2019-03-20 | 2020-08-07 | 浙江厚达智能科技股份有限公司 | Cutting knife assembly for cutting Chinese medicine |
| CN111872243A (en) * | 2020-07-27 | 2020-11-03 | 昆山盛世伟图电子科技有限公司 | Intelligent control hydraulic tool |
| CN111872243B (en) * | 2020-07-27 | 2022-04-01 | 昆山盛世伟图电子科技有限公司 | Intelligent control hydraulic tool |
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