CN102213248A - Reciprocating hydraulic system - Google Patents
Reciprocating hydraulic system Download PDFInfo
- Publication number
- CN102213248A CN102213248A CN2010101380067A CN201010138006A CN102213248A CN 102213248 A CN102213248 A CN 102213248A CN 2010101380067 A CN2010101380067 A CN 2010101380067A CN 201010138006 A CN201010138006 A CN 201010138006A CN 102213248 A CN102213248 A CN 102213248A
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- CN
- China
- Prior art keywords
- hydraulic
- turn
- hydraulic pressure
- input device
- input shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/30—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs
- B25B27/302—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs
- B25B27/304—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs by compressing coil springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/005—With rotary or crank input
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a reciprocating hydraulic system, which mainly comprises a hydraulic output device and a hydraulic input device, wherein the hydraulic output device comprises a hydraulic cylinder with an output shaft; the hydraulic input device is provided with an input shaft exposed on the surface; the input shaft can drive the hydraulic input device to generate a hydraulic pressure and convey the hydraulic pressure to the hydraulic cylinder and the output shaft; the input shaft of the hydraulic input device is sleeved with a rotating seat; a driving nut is screwed on the rotating seat; and one end of the driving nut is fixedly jointed with a shaft end of the input shaft. Therefore, when the driving nut rotates on the rotating seat in a reciprocating mode, the input shaft can be driven to perform axial displacement, and the hydraulic input device is driven to generate the hydraulic pressure so as to move the output shaft.
Description
Technical field
The present invention is relevant with the hydraulic driving system of Hydraulic power tools, more detailed it, be refer in particular to a kind of with by driving the reciprocal turn action of nut, with the reciprocating hydraulic system of fast driving hydraulic pressure generation with the turn seat.
Background technique
The normal hydraulic pressure that uses especially needs the instrument of big output strength as the power resources that drive in the instrument of commonly using for some, as hydraulic pressure or oil pressure instruments such as pulley extractor, flange separators, and a kind of as shown in Figure 1 Hydraulic power tools of commonly using, it consists predominantly of:
One hydraulic pressure generation device 1, be provided with an oil storage tank and an oil hydraulic pump (figure does not show) in this hydraulic pressure generation device, this oil hydraulic pump has protruded out an input shaft 2 in this hydraulic pressure generation device 1 outer surface, these input shaft 2 axial end are provided with a pressure rod 3, and 1 of these pressure rod 3 axle heads and this hydraulic pressure generation device are connected with a connection rod set 4; One oil hydraulic cylinder 5, it can be provided with various set of tools according to the difference of application target in axial end, and these oil hydraulic cylinder 5 inside are communicated with this oil storage tank and oil hydraulic pump.The user can be by back and forth pressing this pressure rod 3, drives this input shaft 2 and press oil hydraulic pump and produce hydraulic pressure, so that this hydraulic pressure generation device 1 produces hydraulic pressure and be delivered to this oil hydraulic cylinder 5, with this set of tools start of motivational drive that utilizes this oil hydraulic cylinder 5 to be produced.
Because this Hydraulic power tools is usually for the labour-saving purpose, the distance of the axle head of this pressure rod 3 and input shaft 2 shaft contacts is quite approaching, allows the user can press this hydraulic pressure generation device 1 easily to drive this set of tools action to utilize lever principle; Add that this pressure rod 3 is that the center of circle produces arc swing with the axle head, and this input shaft 2 only can move back and forth axially, causes 3 amplitudes that can swing of this pressure rod limited; When pressing this pressure rod 3 thus at every turn, only can drive this input shaft 2 and move a bit of distance; Moreover this connection rod set 4 is because assembly is more, and size and intensity is subjected to the restriction of mounting point, is easy to generate problems such as abrasion are impaired after permanent the use.
Open prior art comprehensively, the have part of driving formation, assembling complexity and the part of commonly using Hydraulic power tools easily wear away problems such as impaired.And in view of solving above-mentioned shortcoming, the present invention proposes a kind of reciprocating hydraulic system of new kenel.
Summary of the invention
The objective of the invention is to, a kind of reciprocating hydraulic system is provided, this hydraulic system structure is simple, easy to connect, and it is convenient to install, only need the reciprocal rotating drive nut of user to order about input shaft in operation and pump up and down, can too much not wear and tear thus, to overcome the shortcoming of commonly using Hydraulic power tools.
A kind of reciprocating hydraulic of the present invention system, it includes:
One hydraulic pressure output unit, it includes the oil hydraulic cylinder of a tool output shaft;
One hydraulic pressure input device, include an oil storage tank and an oil hydraulic pump in it, this oil storage tank is communicated to this oil hydraulic cylinder with pipeline via this oil hydraulic pump, wherein, this oil hydraulic pump has an input shaft that exposes to this hydraulic pressure input device surface, and this input shaft can drive this oil hydraulic pump and with this oil storage tank certainly hydraulic pressure is delivered to this oil hydraulic cylinder and output shaft;
Wherein, this hydraulic pressure input device is arranged with a turn seat outside this input shaft, spiral shell is provided with one and drives nut on this turn seat, and an end that should drive nut engages fixing with the axle head of this input shaft, make this driving nut on this turn seat during reciprocal turn, drive this input shaft axial displacement, and make this output shaft start.
Wherein, this turn seat one end is a locking end, to be fixed in this hydraulic pressure input device surface.
Wherein, this turn seat central axis is provided with an axis hole to running through, and wears for this input shaft.
Wherein, this turn seat is a turn end with respect to the other end of this locking end, and this turn end is provided with at least one turn thread.
Wherein, the pitch of this turn thread equals this turn end length.
Wherein, this driving nut is concaved with a screw to turn end that should the turn seat, in this screw to being provided with internal thread by the turn thread.
Wherein, this driving nut is provided with a lockhole with respect to the other end place of this turn end, is provided with a screw lock element spiral shell and establishes, and should drive the locking of nut and this input shaft and be one.
Wherein, the outer surface of this driving nut is a hexagonal column.
Wherein, the axial end of this output shaft is provided with an active tool end, and this oil hydraulic cylinder with respect to an end of this output shaft also correspondence be provided with a setting tool end.
Wherein, between this hydraulic pressure input device and this oil hydraulic cylinder and be provided with a pressure relief pipe that contains Decompression valves, be back to this hydraulic pressure input device with the hydraulic pressure of controlling this oil hydraulic cylinder.
A kind of reciprocating hydraulic of the present invention system comprises following effect:
Drive the cooperation of nut, turn seat and input shaft by this, the user only need rotate this driving nut and can drive this input shaft easily and produce and axially move back and forth, and further drive this oil hydraulic cylinder start, it is simple, easy for installation that it forms member, and the difficult problem that produces part abrasion damage produces.
And this driving nut can be the outer-hexagonal column moulding, in order to do linking with the open-end wrench of generally commonly using, socket wrench or ratchet wrench are movable with convenient, drive the reciprocal turn of this driving nut by spanner, to reach user labour-saving purpose, not only easy to use, simple to operate, the more movable spanner of pulling down after instrument is finished using is to reduce the collection volume.
Moreover, and be respectively equipped with turn thread and internal thread between this turn seat and this driving nut to screw togather mutually, wherein, the pitch of this turn thread can be with the difference adjustment of design, with force amplification effect with different proportion and press distance.
For ease of explanation the present invention represented central idea in foregoing invention content one hurdle, express with specific embodiment now.Various different objects are described in the ratio that is suitable for illustrating, size, amount of deformation or displacement amount among the embodiment, but not are drawn in the ratio of actual components, close chat earlier bright.And in the following description, similar elements is to represent with identical numbering.
Description of drawings
Fig. 1 is a floor map of commonly using Hydraulic power tools.
Fig. 2 is a three-dimensional appearance schematic representation of the present invention.
Fig. 3 is a perspective exploded view of the present invention.
Fig. 4 is a part decomposing schematic representation of the present invention.
Fig. 5 is a part generalized section of the present invention.
Fig. 6 is a section action schematic representation () of the present invention.
Fig. 7 is a part generalized section of the present invention (two).
Fig. 8 is a second embodiment of the present invention perspective exploded view.
Embodiment
Shown in Fig. 2～Fig. 7 drawing, a kind of reciprocating hydraulic of the present invention system, it consists predominantly of:
One hydraulic pressure output unit 10, it includes an oil hydraulic cylinder 11, is provided with an output shaft 12 in this oil hydraulic cylinder 11, and this oil hydraulic cylinder 11 can stretch out to drive in these output shaft 12 self-hydraulic cylinders 11 by the fluid pressure of input.
One hydraulic pressure input device 20, it is general common hydraulic pressure or hydraulic generator, including one in it can be for storing an oil storage tank and an oil hydraulic pump (figure does not show) that produces hydraulic pressure water or wet goods liquid, this oil storage tank is communicated to this oil hydraulic cylinder 11 with pipeline via this oil hydraulic pump, wherein, this oil hydraulic pump has an input shaft 23 that exposes to these hydraulic pressure input device 20 surfaces, and this input shaft 23 can drive this oil hydraulic pump action, with this oil storage tank certainly hydraulic pressure is delivered to this oil hydraulic cylinder 11 and output shaft 12.
One turn seat 30, these turn seat 30 central axis are provided with an axis hole 31 to running through, and wear for this input shaft 23, and these turn seat 30 1 ends are a locking end 32, to be fixed in this hydraulic pressure input device 20 surfaces; Wherein, this turn seat 30 is a turn end 33 with respect to the other end of this locking end 32, and this turn end 33 is provided with at least one turn thread 34, and rough this turn end 33 length that equal of the pitch of this turn thread 34.
One drives nut 40, and the turn end 33 that 40 pairs on this drivings nut should turn seat 30 is concaved with a screw 41, and this screw 41 is interior to being provided with internal thread 42 by turn thread 34, makes this driving nut 40 can be screwed together in this turn end 33 places; And this screw 41 is provided with a lockhole 43 with respect to the other end place of this turn end 33, this lockhole 43 can be provided with a screw lock element 44 spiral shells and establish, and should drive nut 40 and be one with this input shaft 23 lockings, this locking can screw togather the internal thread realization of input shaft 23 by screw lock element 44, also can realize by other locking mode commonly used; Moreover, the place, open end of this screw 41 is concaved with the latch closure groove 45 of a ring-type, can embed for C shape button 451 in this latch closure groove 45 and install, and on the wall of this driving nut 40 to being equipped with at least one screw 46 by latch closure groove 45, make this latch closure groove 45 be connected, and can screw in installation to avoid driving nut 40 disengaging turn seats for a screw 461 in this screw 46 with this screw 46.
One set of tools 50, its axial end in this output shaft 12 is provided with an active tool end 51, and this oil hydraulic cylinder 11 with respect to an end of this output shaft 12 also correspondence be provided with a setting tool end 52.
After understanding the invention described above detailed structure, below describe in detail one by one at operating principle of the present invention:
When user's desire is used this Hydraulic power tools, can hand or instrument rotate this driving nut 40, by cooperating of this turn thread 34 and internal thread 42, make this driving nut 40 on this turn seat 30, produce relative spinning movement, and in the generation axial displacement of turn end 33 places of this turn seat 30, shown in Fig. 5 and Fig. 6 drawing, when rotating this driving nut 40, the user make it toward turn end 33 outer ends when moving, because this input shaft 23 passes this lockhole 43 by this screw lock element 44, so that this driving nut 40 is one with these input shaft 23 screw locks, so this input shaft 23 is also driven nut 40 outside pullings to produce axial displacement by this simultaneously.
After this input shaft 23 is drawn out, oppositely should drive nut 40 again and go back to original position, so that this input shaft 23 is pressed into again, this moment is owing to the action that presses of this input shaft 23, can make this hydraulic pressure input device 20 produce a hydraulic pressure, produce action and make this oil hydraulic cylinder 11 and this output shaft 12 drive this set of tools 50 to be delivered to this hydraulic pressure output unit 10.
Moreover, be provided with a check valve between the pipeline of this oil hydraulic pump and this oil hydraulic cylinder 11, make sustainable the remaining in this oil hydraulic cylinder 11 of hydraulic pressure that this oil hydraulic pump produced, to prevent the hydraulic pressure backflow and to make this set of tools 50 keep works fine situations, the set of tools shown in the drawing 50 for example, sustainable and workpiece strutted or separate (shown in Fig. 7 drawing) progressively of its active tool end 51 and setting tool end 52.
11 of the oil storage tank of this hydraulic pressure input device 20 and this oil hydraulic cylinders also are provided with a pressure relief pipe, and being provided with a Decompression valves 24 in this pressure relief pipe opens and closes to control its pipeline, this Decompression valves 24 exposes to this hydraulic pressure input device 20 surfaces, after finishing using in instrument, open this Decompression valves 24 and make hydraulic pressure be back to oil storage tank, set of tools 50 is returned to original position, convenient collection.
The C shape button 451 of these driving nut 40 inside can produce the spacing function of mutual block with the turn thread 34 of this turn seat 30, to prevent this driving nut 40 of user's inordinate rotation, and the problem of avoiding this driving nut 40 and turn seat 30 to throw off really; And need pull down when work such as keeping in repair when this driving nut 40, need earlier this screw 461 to be continued to screw in these screws 46, make the end of this screw 461 enter this latch closure groove 45, so that this C shape button 451 is expelled disengaging in latch closure groove 45; Behind this C shape button 451 to be removed, this screw 461 is screwed out outward withdraw from this latch closure groove 45 again, can take off this driving nut 40 from these turn seat 30 places.
The outer surface of this driving nut 40 generally is a hexagonal column; Link with the open-end wrench of generally commonly using, socket wrench or ratchet wrench are movable with convenient, drive this driving nut 40 reciprocal turns by the spanner of commonly using, can reach user labour-saving purpose, not only easy to use, simple to operate, the more movable spanner of pulling down after instrument is finished using is to reduce the collection volume.
Moreover and this turn seat 30 and 40 on this driving nut be respectively equipped with turn thread 34 and internal thread 42 to screw togather mutually, and wherein, the pitch of this turn thread 34 can be with the difference adjustment of design, with force amplification effect with different proportion and press distance.Add rough this turn end 33 length that equal of pitch of turn thread 34 of the present invention, that is this driving nut 40 whenever revolves, and to turn around be a movable turn end 33 length, and its displacement is axial straight-line displacement, do not have and commonly use the pressure rod arc swing and the situation that presses stroke limiting is taken place, and than located by prior art, the present invention has the longer stroke that presses, also can make this hydraulic pressure input device 20 can be in the unit time faster generation hydraulic pressure, to save the operating time of Hydraulic power tools.
Hydraulic pressure output unit 10 of the present invention and hydraulic pressure input device 20 are provided with except that being combined into one, also can be applicable to the hydraulic pressure output unit 10 and the hydraulic pressure input device 20 that are provided with separately; See also shown in Fig. 8 drawing, it is the hydraulic pressure input device 20 that is provided with separately, 10 of this hydraulic pressure input device 20 and hydraulic pressure output units can be flexibly connected by a pipeline (as hydraulic tube etc.), it mainly is installed on side edge with this turn seat 30 with the direction perpendicular to hydraulic pressure input device 20 axle center with this input shaft 23, this top that drives nut 40 links leader 60, the user only need back and forth press this handle 60, can drive this hydraulic pressure input device 20 and produce hydraulic pressure.
Though the present invention does explanation with several most preferred embodiments, be skillful in this skill person and can make various multi-form changes not breaking away under the present invention spirit and the category.Above illustrated embodiment is only in order to explanation the present invention, and is non-in order to limit the scope of the invention.Such as do not disobey various modifications or the variation that spirit of the present invention is engaged in, all belong to the present patent application claim.
Claims (10)
1. reciprocating hydraulic system, it includes:
One hydraulic pressure output unit, it includes the oil hydraulic cylinder of a tool output shaft;
One hydraulic pressure input device, this hydraulic pressure input device have one and expose to surperficial input shaft, and this input shaft can drive the hydraulic pressure input device and produce a hydraulic pressure, and this hydraulic pressure is delivered to this oil hydraulic cylinder and output shaft;
Wherein, this hydraulic pressure input device is arranged with a turn seat outside this input shaft, spiral shell is provided with one and drives nut on this turn seat, and an end that should drive nut engages fixing with the axle head of this input shaft, make this driving nut on this turn seat during reciprocal turn, drive this input shaft axial displacement, and drive this hydraulic pressure input device generation hydraulic pressure so that this output shaft start.
2. reciprocating hydraulic as claimed in claim 1 system is characterized in that, this turn seat one end is a locking end, to be fixed in this hydraulic pressure input device surface.
3. reciprocating hydraulic as claimed in claim 2 system is characterized in that this turn seat central axis is provided with an axis hole to running through, and wears for this input shaft.
4. reciprocating hydraulic as claimed in claim 3 system is characterized in that, this turn seat is a turn end with respect to the other end of this locking end, and this turn end is provided with at least one turn thread.
5. reciprocating hydraulic as claimed in claim 4 system is characterized in that the pitch of this turn thread equals this turn end length.
6. reciprocating hydraulic as claimed in claim 4 system is characterized in that, this driving nut is concaved with a screw to turn end that should the turn seat, in this screw to being provided with internal thread by the turn thread.
7. reciprocating hydraulic as claimed in claim 6 system is characterized in that this driving nut is provided with a lockhole with respect to the other end place of this turn end, is provided with a screw lock element spiral shell and establishes, and should drive nut and the locking of this input shaft is one.
8. reciprocating hydraulic as claimed in claim 6 system is characterized in that the outer surface of this driving nut is a hexagonal column.
9. reciprocating hydraulic as claimed in claim 1 system is characterized in that the axial end of this output shaft is provided with an active tool end, and this oil hydraulic cylinder with respect to an end of this output shaft also correspondence be provided with a setting tool end.
10. reciprocating hydraulic as claimed in claim 1 system is characterized in that, between this hydraulic pressure input device and this oil hydraulic cylinder and be provided with a pressure relief pipe that contains Decompression valves, is back to this hydraulic pressure input device with the hydraulic pressure of controlling this oil hydraulic cylinder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101380067A CN102213248A (en) | 2010-04-02 | 2010-04-02 | Reciprocating hydraulic system |
| PCT/CN2010/071768 WO2011120240A1 (en) | 2010-04-02 | 2010-04-14 | Reciprocating hydraulic pressure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101380067A CN102213248A (en) | 2010-04-02 | 2010-04-02 | Reciprocating hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102213248A true CN102213248A (en) | 2011-10-12 |
Family
ID=44711322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101380067A Pending CN102213248A (en) | 2010-04-02 | 2010-04-02 | Reciprocating hydraulic system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102213248A (en) |
| WO (1) | WO2011120240A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508169A (en) * | 2016-01-19 | 2016-04-20 | 成都远东高科科技有限公司 | Improved hydraulic manual pump |
| CN105545624A (en) * | 2016-01-19 | 2016-05-04 | 成都远东高科科技有限公司 | Conveniently-dismounted hydraulic manual pump body |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1550285A (en) * | 1925-01-31 | 1925-08-18 | Sherman George Sale | Apparatus for tightening handhole covers |
| US3402455A (en) * | 1967-04-17 | 1968-09-24 | Keith C. Converse | Wheel puller |
| CN2331966Y (en) * | 1998-05-29 | 1999-08-04 | 彭剪桑 | Multifunction accessory equipment of thermal flowmeter |
| CN2409016Y (en) * | 1999-12-22 | 2000-12-06 | 陈钰霖 | Bearing mounting device |
| CN2642450Y (en) * | 2003-09-28 | 2004-09-22 | 洪文正 | Oilostatic wheel puller with improved structure |
| CN2810902Y (en) * | 2005-06-16 | 2006-08-30 | 廖玄 | Multifunctional puller for engine cylinder sleeve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206403U (en) * | 1987-04-17 | 1988-01-20 | 中国矿业学院 | Drill rod pulling machine |
| US6266861B1 (en) * | 1999-12-13 | 2001-07-31 | Yu-Lin Chen | Device for mounting bearings onto a shaft |
| TWM248567U (en) * | 2003-08-08 | 2004-11-01 | Chia Lunn Ind Co Ltd | Structure improvement for hydraulic wheel remover |
| CN101062556A (en) * | 2006-04-26 | 2007-10-31 | 陈钰霖 | Oil-pressure pulley extractor |
| CN201124369Y (en) * | 2007-11-22 | 2008-10-01 | 胡治国 | Driving structure of drawing device |
| TWM356580U (en) * | 2008-10-23 | 2009-05-11 | C & Amp J Entpr Co Ltd | Hydraulic tool with oil storage window |
-
2010
- 2010-04-02 CN CN2010101380067A patent/CN102213248A/en active Pending
- 2010-04-14 WO PCT/CN2010/071768 patent/WO2011120240A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1550285A (en) * | 1925-01-31 | 1925-08-18 | Sherman George Sale | Apparatus for tightening handhole covers |
| US3402455A (en) * | 1967-04-17 | 1968-09-24 | Keith C. Converse | Wheel puller |
| CN2331966Y (en) * | 1998-05-29 | 1999-08-04 | 彭剪桑 | Multifunction accessory equipment of thermal flowmeter |
| CN2409016Y (en) * | 1999-12-22 | 2000-12-06 | 陈钰霖 | Bearing mounting device |
| CN2642450Y (en) * | 2003-09-28 | 2004-09-22 | 洪文正 | Oilostatic wheel puller with improved structure |
| CN2810902Y (en) * | 2005-06-16 | 2006-08-30 | 廖玄 | Multifunctional puller for engine cylinder sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508169A (en) * | 2016-01-19 | 2016-04-20 | 成都远东高科科技有限公司 | Improved hydraulic manual pump |
| CN105545624A (en) * | 2016-01-19 | 2016-05-04 | 成都远东高科科技有限公司 | Conveniently-dismounted hydraulic manual pump body |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011120240A1 (en) | 2011-10-06 |
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Application publication date: 20111012 |