CN102303828A - Hydraulic pump structure for double-speed separating type hydraulic jack - Google Patents
Hydraulic pump structure for double-speed separating type hydraulic jack Download PDFInfo
- Publication number
- CN102303828A CN102303828A CN201110232919A CN201110232919A CN102303828A CN 102303828 A CN102303828 A CN 102303828A CN 201110232919 A CN201110232919 A CN 201110232919A CN 201110232919 A CN201110232919 A CN 201110232919A CN 102303828 A CN102303828 A CN 102303828A
- Authority
- CN
- China
- Prior art keywords
- pump
- chamber
- oil
- stem
- hydraulic
- 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.)
- Pending
Links
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a hydraulic pump structure for a double-speed separating type hydraulic jack, belongs to the technical field of hydraulic facilities. The hydraulic pump structure comprises a base, a pump body on the base, a pump core in the pump body, a press handle connected with the pump core, an oil storage pipe matched with the base, a high-pressure oil pipe matched with the base and a hydraulic oil way system arranged on the base, wherein the oil storage pipe and the high-pressure oil pipe are communicated with the hydraulic oil way system; the base is provided with a base ladder cavity for the configuration of the pump body, the pump body is a ladder-type pump body and matched with the base ladder cavity, and the pump body is communicated with the hydraulic oil way system; and the pump core is a ladder-type pump core and fit with the pump body. The hydraulic pump structure has the advantages that the hydraulic pump structure is in favor of processing a first pump stem cavity and a second pump stem cavity and can guarantee the processing quality so as to effectively improve the integral matching effect of the pump core and the pump body; and furthermore, the material loss for processing the base and the pump body is saved and the integral volume is reduced.
Description
Technical field
The invention belongs to hydraulic pressure equipment technical field, be specifically related to a kind of hydraulic pump structure of double speed separation type hydraulic jack
Background technology
The hydraulic pump structure of
double speed separation type hydraulic jack is no lack of in the Chinese patent document and is seen in; Omit a kind of foot-operated separation type double speed jack that provides with oil pump and CN2543939Y with the double speed separation type oil jack of recommending like the disclosed a kind of dual-speed hydraulic jacking oil pump of CN2567196Y, CN2304760Y that exemplifies, or the like.
are not limited to the above-mentioned hydraulic pump structure that exemplifies and have following logical fraud: the one, owing to influenced by traditional design concept and the pump housing and base being constituted integrative-structure; Thereby cause the difficulty of processing of pump housing endoporus big; The roughness of endoporus is difficult to ensure; For example in base, process and be used to supply the big pump plunger shaft of pump core and big pump plunger shaft chamber and little pump plunger shaft chamber that little pump plunger shaft matches; the roughness in little pump plunger shaft chamber can not get ensureing, influences the overall co-ordination effect of the pump core and the pump housing; The 2nd, process velocity is slow, and the material deterioration inside in the course of processing is big, both has been difficult to satisfy the industrialized mass production requirement, and the economizing type and the energy-saving economic spirit that are not enough to again advocate with the present whole society adapt; The 3rd, the leak tightness shortcoming of the pump core and the pump housing; The 4th, overall volume is big.
In view of above-mentioned prior art, be necessary to improve, this applicant has been done useful design, the technical scheme that will introduce produces under this background below
Summary of the invention
top priority of the present invention be to provide a kind of pump housing and base to show as split-type structural and use reduction to the difficulty of processing of pump housing endoporus, improve pump housing endoporus crudy, ensure the pump core and the pump housing the overall co-ordination effect, promote process velocity and the hydraulic pump structure of the double speed separation type hydraulic jack of overall volume is dwindled in the loss and helping of saving material.
another task of the present invention is to provide a kind of hydraulic pump structure that helps to promote the double speed separation type hydraulic jack of the sealing effectiveness between the pump core and the pump housing.
top priority of the present invention is accomplished like this; A kind of hydraulic pump structure of double speed separation type hydraulic jack; Comprise base; Be positioned at the pump housing on the base; Be positioned at the pump core of the pump housing; Press hand with pump core bonded assembly; The oil storing tube that connects with base; The high pressure fuel pipe that same and base connect and be arranged at the hydraulic oil pipe system on the base; Wherein: oil storing tube and high pressure fuel pipe communicate with said hydraulic oil pipe system; Characteristics are: constitute the base stepped cavity that is used to supply said pump housing configuration on the described base; The described pump housing is the stepped appearance pump housing; Connect with the base stepped cavity; And this pump housing also communicates with said hydraulic oil pipe system; Described pump core is a stepped appearance pump core, and matches with the said pump housing.
another task of the present invention is accomplished like this; Described base stepped cavity is made up of first pump housing step chamber, second pump housing step chamber and the 3rd pump housing step chamber; And first, second, third pump housing step chamber forms the narrow gradient relation that contracts each other from top to bottom, and wherein: the diameter in second pump housing step chamber is littler than the diameter in first pump housing step chamber; And the diameter in the 3rd pump housing step chamber is littler than the diameter in second pump housing step chamber; The described pump housing constitutes first, second pump housing step and the 3rd pump housing step; Wherein: first pump housing step matches with said first pump housing step chamber; Second pump housing platform matches with said second pump housing step chamber; And the 3rd pump housing step and said the 3rd pump housing step chamber fix; And; The central authorities of the pump housing constitute one first pump stem stem chamber and one second pump stem stem chamber, and below and diameter that the second pump stem stem chamber is positioned at the first pump stem stem chamber are littler than the diameter in the first pump stem stem chamber; Described pump core by the first pump stem stem of its upper end be positioned at first pump stem stem below and the second pump stem stem that diameter is littler than the diameter of the first pump stem stem constitutes; Wherein: the first pump stem stem matches with the described first pump stem stem chamber; And the second pump stem stem matches with the described second pump stem stem chamber; And be provided with one at the end of this second pump stem stem and be used for constituting leak free and the Y-shaped pump core seal ring of section form with the chamber wall in the described second pump stem stem chamber, the first pump stem stem chamber and the second pump stem stem chamber all communicate with described hydraulic oil pipe system.
are in a concrete embodiment of the present invention; The bottom in described second pump housing step chamber offers a big pump oilhole; The bottom in described the 3rd pump housing step chamber offers a little pump oilhole; The bottom in the described first pump stem stem chamber offers a big pump oil through; This big pump oil through communicates with big pump oilhole, and big pump oilhole and described little pump oilhole all communicate with described hydraulic oil pipe system.
are in another concrete embodiment of the present invention; It is Y-shaped and inboardly be the first pump stem stem seal ring of lips to be embedded with section form on the inwall in the described first pump stem stem chamber, and this first pump stem stem seal ring and the described first pump stem stem are sealed and matched.
are embedded with one second pump housing step seal ring on the chamber wall in described second pump housing step chamber in another concrete embodiment of the present invention, this second pump housing step seal ring and described second pump housing step are sealed and matched.
are connected with a connecting rod on described base in another concrete embodiment of the present invention, the described hand of pressing is connected with this connecting rod gudgeon.
also have among the concrete embodiment of the present invention; One end of described oil storing tube is captiveed joint with said base; And the oil storage tube chamber of this oil storing tube communicates with said hydraulic oil pipe system; The other end at oil storing tube is equipped with oil storing tube lid; This oil storing tube lid is bearing on the pipe cage, and covers at oil storing tube and also to be equipped with an oil ga(u)ge indicating device that is used to predict the intraluminal hydraulic oil oil level of said oil storage.
are more of the present invention and among concrete embodiment; Said oil ga(u)ge indicating device comprises oil scale and oil scale hold-doun nut; One end end of oil scale is fixed on the oil scale hold-doun nut; And the other end of oil scale is stretched in the described oil storage tube chamber; Oil scale hold-doun nut and said oil storing tube lid connect, and cover at oil storing tube and are installed with the captive nut that is used for said pipe cage location.
are in of the present invention and then concrete embodiment; Said oil storing tube covers and constitutes a connector; On the inwall of this connector, be designed with negative thread; And be designed with outside thread on the outer wall; Described oil scale hold-doun nut and said negative thread are matched, and described captive nut and said outside thread connect.
technical scheme provided by the invention constitutes split type fit structure with the pump housing and base under the prerequisite that has overcome the prejudice in the prior art; Not only help first, second pump stem stem chamber processing and guarantee crudy to the pump housing; Use the overall co-ordination effect that makes the pump core and the pump housing and effectively improve, and help to practice thrift the spillage of material of the processing base and the pump housing and be of value to and dwindle overall volume.
Description of drawings
Fig. 1 is a constructional drawing of the present invention.
Fig. 2 is the cutaway view of Fig. 1.
Fig. 3 is the scheme drawing of hydraulic oil pipe system of the present invention.
Fig. 4 is the enlarged drawing of the first pump stem stem seal ring of the present invention.
The specific embodiment
can be expressly understood technical spirit of the present invention and beneficial effect more for the inspector that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.
Fig. 1, Fig. 2 and Fig. 4 are asked for an interview in
; Provided a base 1; On this base 1, offer a base stepped cavity 11; This base stepped cavity 11 comprises first, second pump housing step chamber 111,112 and the 3rd pump housing step chamber 113; Offer a big pump oilhole 1121 in the bottom in second pump housing step chamber 112; And on the chamber wall in second pump housing step chamber 112, be embedded with one second pump housing step seal ring 1122, and offer a little pump oilhole 1131 in the bottom in the 3rd pump housing step chamber 113.In a side of base 1 is that the left side of location status shown in Figure 1 is equipped with a connecting rod 12, specifically: and the lower end crank connecting link screw 121 of connecting rod 12 is fixing with base 1, and the upper end of connecting rod 12 is provided with a pitman pin 122.Aforesaid first, second, third pump housing step chamber 111,112,113 forms by big to little gradient relation each other; That is to say; The diameter in first pump housing step chamber 111 is bigger than the diameter in second pump housing step chamber 112, and the diameter in second pump housing step chamber 112 is bigger than the diameter in the 3rd pump housing step chamber 113.
offer big pump oil through 241 (being low pressure oil oil through 241) in the bottom in the first pump stem stem chamber 24; As the present invention program's a technical essential, it is Y-shaped and inboardly be the first pump core seal ring 242 (Fig. 4 shows) of lips on the chamber wall in the first pump stem stem chamber 24, to be embedded with a section form.Preferably, be provided with a tightening seal washer 26 that is used for the bottom seals in the step chamber 11 of base 1 in the bottom of the pump housing 2, the medium pore 261 of tightening seal washer 26 communicates with the second pump core chamber 25 and little pump oilhole 1131.
The pump core 3 that
provide is stepped appearance pump core; This pump core 3 is that diameter significantly constitutes than the first pump stem stem, the 31 second little pump stem stems 32 jointly by the first pump stem stem 31 on top with the bottom; The first pump stem stem 31 matches with the aforesaid first pump stem stem chamber 24, and the second pump stem stem 32 matches with the aforesaid second pump stem stem chamber 25.Cervical fixation at the end of the second pump stem stem 32 has the Y-shaped pump core seal ring 321 of a section form, by this pump core seal ring 321 embody and the chamber wall in the aforesaid second pump stem stem chamber 25 between the desirable seal effect.And the aforesaid first pump core seal ring 242 is used for and the first pump stem stem 31 between constitute sealing.Be provided with one at the top of the first pump stem stem 31 and press hand connection bearing pin 311.
by shown in Figure 1, offers first connecting bore 41 on the hand 4 and second connecting bore, 42, the first connecting bores 41 are connected with aforesaid pitman pin 122 pressing, and second connecting bore 42 is connected bearing pin 311 and connects with the aforesaid hand of pressing.When the handle 43 of hand 4 is pressed in manipulation, pump core 3 is moved up and down in the pump housing 2.
Fig. 1 please be seen by emphasis in
; The oil storing tube 5 and the base 1 that provide connect; The oil storage tube chamber 51 of this oil storing tube 5 communicates (aforesaid first with following hydraulic oil pipe system 7 that also will describe in detail and that be formed on the base 1; The second pump stem stem chamber 24; 25 communicate with hydraulic oil pipe system 7 equally); The other end of oil storing tube 5 is that right-hand member shown in Figure 1 is equipped with oil storing tube lid 52; This oil storing tube lid 52 is bearing on the pipe cage 521; And the end of oil storing tube lid 52 also constitutes a connector 522; Be processed with negative thread 5221 on the chamber wall that connects head cavity of this connector 522; And be processed with outside thread 5222 on the outer wall, dispose an oil ga(u)ge indicating device 8 that is used to predict the hydraulic oil oil level in the oil storage tube chamber 51 by means of negative thread 5221.
oil ga(u)ge indicating device 8 comprises an oil scale 81, an oil scale hold-doun nut 82; One end end of oil scale 81 (right-hand member end shown in Figure 1) is fixing with oil scale hold-doun nut 82; The other end is stretched in the oil storage tube chamber 51, and oil scale hold-doun nut 82 adds tightening seal washer 821 and connects with aforesaid negative thread 5221.Captive nut 83 revolves and fits on the outside thread 5222, is used for pipe cage 521 is limited.
high pressure fuel pipes 6 (also can claim high pressure hose) connect with base 1, and communicate with hydraulic oil pipe system 7, and the oil pressure cylinder joint 61 and the high-voltage oil cylinder of the other end of high pressure fuel pipe 6 connect (not shown).
are asked for an interview Fig. 3 and are combined Fig. 1 and Fig. 2, and the applicant is the double hydraulic oil pipe system 7 of stating in the process of narration principle of work of the present invention, when operator's bar handle 43 (up and down repeatedly), drive pump cores 3 up-and-down movements by pressing hand 4.When last handle 43; First; The second pump stem stem chamber 24; 25 oil suctions; At this moment; First steel ball valve 731 of big pump check valve 73 and the second steel ball valve 741 all (all) of little pump check valve 74 are in closed condition; And first small ball valve 732 of big pump check valve 73 and the second small ball valve 742 of little pump check valve 74 all are in opening, and the hydraulic oil in the oil storage tube chamber 51 of oil storing tube 5 is through the oil road 79a of hydraulic oil pipe system 7; First; The second small ball valve 732; 742 and first; Second oil duct 76; 77 get into the first pump stem stem chamber 24 and get into the second pump stem stem chamber 25 from little pump oilhole 1131 from big pump oilhole 1121 respectively.When pressing handle 43 instantly; When being pump oil; Aforesaid first; The second small ball valve 732; 742 all close; And aforesaid first; The second steel ball valve 731; 741 all open; Pressure oil gets into high pressure fuel pipe 6; Bar handle 43 so repeatedly; When the oil pressure cylinder that connects until oil pressure cylinder joint 61 and pressure-bearing with high pressure fuel pipe 6; Promptly; When the pressure of oil pressure cylinder during greater than the response pressure of the first steel ball valve 731; That is to say; When degree that the first steel ball valve 731 is not enough to be opened from the hydraulic oil in the oil storing tube 5 top, when also being pressure, when just pressure is greater than the setting pressure of by pass valve 71 greater than the pressure in the first pump stem stem chamber 24; The hydraulic oil that comes from oil storage tube chamber 51 so just gets into by pass valve 71 through first oil duct 76, and returns into oil storage tube chamber 51 through back oil road 78 and through back oil road 79b.However, since the stem 32 to accommodate a second pump stem a second pump pressure chamber 25, then to be able to open a second steel ball top 741, to the pressure supply pipe 6, so that the pressure pipe 6 with then the pressure cylinder supercharged, until the pressure cylinder pressure is greater than the second pump pressure chamber 25 core columns, that pressure from the cylinder pressure is greater than not stem from the second pump pressure oil chamber 25 to open the second steel ball valve top 741 extent, that is, the pressure relief valve 72 cylinder pressure is greater than the set pressure, then the hydraulic oil will enter through the second oil passage 77 valve 72, and through the oil return channel 78 and channel 79b oil return back into the oil reservoir lumen 51.After hours, promptly when will be to the oil pressure cylinder release, open oil cock 75 (also can claim pressure-relief valve) so, the pressure oil in the oil pressure cylinder returns in the oil storage tube chamber 51 through high pressure fuel pipe 6 and fuel-return valve 75 and back oil road 79b.
Can know that by above-mentioned explanation the hydraulic oil pipe system 7 that is formed on the base 1 is made up of by pass valve 71, safety valve 72, large and small pump check valve 73,74, fuel-return valve 75, first, second oil duct 76,77, back oil road 78, oil road 79a and back oil road 79b
Claims (9)
1. the hydraulic pump structure of
a kind of double speed separation type hydraulic jack; Comprise base (1); Be positioned at the pump housing (2) on the base (1); Be positioned at the pump core (3) of the pump housing (2); Press hand (4) with pump core (3) bonded assembly; The oil storing tube (5) that connects with base (1); The high pressure fuel pipe (6) that same and base (1) connects and be arranged at the hydraulic oil pipe system (7) on the base (1); Wherein: oil storing tube (5) and high pressure fuel pipe (6) communicate with said hydraulic oil pipe system (7); It is characterized in that: constitute the base stepped cavity (11) that is used to supply the said pump housing (2) configuration on the described base (1); The described pump housing (2) is the stepped appearance pump housing; Connect with base stepped cavity (11); And this pump housing (2) also communicates with said hydraulic oil pipe system (7); Described pump core (3) is a stepped appearance pump core, and matches with the said pump housing (2).
2.
according to claim 1, wherein the separate two-speed hydraulic pump hydraulic jack, characterized in that said base stepped cavity (11) by a first stepped pump chamber (111) The second stage pump chamber (112) and the third stage pump chamber (113) form, and the first, second and third stage pump chamber (111, 112) each other to form a narrowing from top to bottom gradient relationship, wherein: the second stage pump chamber (112) stepped in diameter than the first pump chamber (111) of small diameter; the third stage pump chamber (113) has a diameter larger than the second stage pump chamber (112) smaller in diameter; said body (2) is formed with a first, a second pump stage (21, 22) and a third pump stage (23), wherein: the first pump stage (21) pump chamber with said first step (111) match, the second pump stage (22) and said second pump stage chamber (112) match, and a third pump stage (23) and said The third stage pump chamber (113) is fixed, and the pump body (2) constitutes the center of the stem has a first pump chamber (24) and a second chamber pump stem (25), a second pump chamber stem (25) the stem in the first pump chamber (24) and the bottom of the stem diameter than the first pump chamber (24) of smaller diameter; said pump core (3) by a first upper end of the pump stem (31 ) and the first pump in the stem (31) and the bottom of the stem diameter than the first pump (31) of a smaller diameter stem a second pump (32) having: a first pump stem (31) and the said first pump stem chamber (24) match, and the second pump stem (32) with said second chamber pump stem (25) match, and the stem of the second pump (32) the end is provided with a second pump with said stem chamber (25) constituting the sealing wall of the Y-shaped cross sectional shape and a pump core ring (321), the first pump stem chamber (24) and The second pump stem chamber (25) were associated with said hydraulic oil system (7) connected.
3. the hydraulic pump structure of
double speed separate type hydraulic jack according to claim 2; The bottom that it is characterized in that described second pump housing step chamber (112) offers a big pump oilhole (1121); The bottom in described the 3rd pump housing step chamber (113) offers a little pump oilhole (1131); The bottom in the described first pump stem stem chamber (24) offers a big pump oil through (241); This big pump oil through (241) communicates with big pump oilhole (1121), and big pump oilhole (1121) and described little pump oilhole (1131) all communicate with described hydraulic oil pipe system (7).
4. the hydraulic pump structure of
double speed separation type hydraulic jack according to claim 2; It is Y-shaped and inboardly be the first pump stem stem seal ring (242) of lips to it is characterized in that being embedded with on the inwall in the described first pump stem stem chamber (24) section form, and this first pump stem stem seal ring (242) is sealed and matched with the described first pump stem stem (31).
5. the hydraulic pump structure of
double speed separation type hydraulic jack according to claim 2; It is characterized in that being embedded with one second pump housing step seal ring (1122) on the chamber wall in described second pump housing step chamber (112), this second pump housing step seal ring (1122) is sealed and matched with described second pump housing step (22).
6. the hydraulic pump structure of
double speed separation type hydraulic jack according to claim 1 is characterized in that on described base (1), being connected with a connecting rod (12), described hand (4) and this connecting rod (12) pivotal joint pressed.
7. the hydraulic pump structure of
double speed separation type hydraulic jack according to claim 1; An end that it is characterized in that described oil storing tube (5) is captiveed joint with said base (1); And the oil storage tube chamber (51) of this oil storing tube (5) communicates with said hydraulic oil pipe system (7); The other end at oil storing tube (5) is equipped with oil storing tube lid (52); This oil storing tube lid (52) is bearing on the pipe cage (521), and on oil storing tube lid (52), also is equipped with an oil ga(u)ge indicating device (8) that is used to predict the hydraulic oil oil level in the said oil storage tube chamber (51).
8. the hydraulic pump structure of
double speed separation type hydraulic jack according to claim 7; It is characterized in that said oil ga(u)ge indicating device (8) comprises oil scale (81) and oil scale hold-doun nut (82); One end end of oil scale (81) is fixed on the oil scale hold-doun nut (82); And the other end of oil scale (81) is stretched in the described oil storage tube chamber (51); Oil scale hold-doun nut (82) connects with said oil storing tube lid (52), on oil storing tube lid (52), is installed with the captive nut (83) that is used for said pipe cage (521) location.
9.
The hydraulic pump structure of double speed separation type hydraulic jack according to claim 8; It is characterized in that constituting a connector (522) on the said oil storing tube lid (52); On the inwall of this connector (522), be designed with negative thread (5221); And be designed with outside thread (5222) on the outer wall; Described oil scale hold-doun nut (82) is matched with said negative thread (5221), and described captive nut (83) connects with said outside thread (5222)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110232919A CN102303828A (en) | 2011-08-15 | 2011-08-15 | Hydraulic pump structure for double-speed separating type hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110232919A CN102303828A (en) | 2011-08-15 | 2011-08-15 | Hydraulic pump structure for double-speed separating type hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102303828A true CN102303828A (en) | 2012-01-04 |
Family
ID=45377773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110232919A Pending CN102303828A (en) | 2011-08-15 | 2011-08-15 | Hydraulic pump structure for double-speed separating type hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102303828A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233933A (en) * | 2013-05-13 | 2013-08-07 | 蔡青林 | Manual operation oil pump hydraulic system for anchor shank tension meter |
| CN104368635A (en) * | 2013-08-12 | 2015-02-25 | 平湖市通力机械有限公司 | Multi-purpose auto repair dresser |
| CN104909298A (en) * | 2015-06-01 | 2015-09-16 | 常熟通润汽车修理设备有限公司 | Tailstock device of portable jack oil pump oil storage cylinder |
| CN105293355A (en) * | 2015-11-16 | 2016-02-03 | 刘应才 | Hydraulic pump device for hydraulic jacks and control method of hydraulic pump device |
| CN105540484A (en) * | 2015-12-31 | 2016-05-04 | 常熟通润汽车零部件股份有限公司 | Hydraulic jack for rapidly lifting load |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0407318A1 (en) * | 1989-07-07 | 1991-01-09 | Victory | Hydraulic jack |
| CN2218734Y (en) * | 1994-11-04 | 1996-01-31 | 洪茂雄 | Hydraulic jack with handle reset and stopper |
| CN2304760Y (en) * | 1997-05-22 | 1999-01-20 | 常熟通润机电有限公司 | Two speed separate hydraulic jack pump |
| CN2543939Y (en) * | 2002-05-08 | 2003-04-09 | 江苏通润机电集团有限公司 | Pedal separation type double-speed jack |
| CN201296626Y (en) * | 2008-11-17 | 2009-08-26 | 傅勇刚 | Separated oil jack |
| US20100140576A1 (en) * | 2008-11-03 | 2010-06-10 | Victor Hung | Warning System For Hydraulic Lifting Apparatus |
| KR20110030075A (en) * | 2009-09-17 | 2011-03-23 | 곽오봉 | Manual push jack |
| CN202208621U (en) * | 2011-08-15 | 2012-05-02 | 常熟通润汽车零部件股份有限公司 | Hydraulic pump structure of double-speed separating hydraulic jack |
-
2011
- 2011-08-15 CN CN201110232919A patent/CN102303828A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0407318A1 (en) * | 1989-07-07 | 1991-01-09 | Victory | Hydraulic jack |
| CN2218734Y (en) * | 1994-11-04 | 1996-01-31 | 洪茂雄 | Hydraulic jack with handle reset and stopper |
| CN2304760Y (en) * | 1997-05-22 | 1999-01-20 | 常熟通润机电有限公司 | Two speed separate hydraulic jack pump |
| CN2543939Y (en) * | 2002-05-08 | 2003-04-09 | 江苏通润机电集团有限公司 | Pedal separation type double-speed jack |
| US20100140576A1 (en) * | 2008-11-03 | 2010-06-10 | Victor Hung | Warning System For Hydraulic Lifting Apparatus |
| CN201296626Y (en) * | 2008-11-17 | 2009-08-26 | 傅勇刚 | Separated oil jack |
| KR20110030075A (en) * | 2009-09-17 | 2011-03-23 | 곽오봉 | Manual push jack |
| CN202208621U (en) * | 2011-08-15 | 2012-05-02 | 常熟通润汽车零部件股份有限公司 | Hydraulic pump structure of double-speed separating hydraulic jack |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233933A (en) * | 2013-05-13 | 2013-08-07 | 蔡青林 | Manual operation oil pump hydraulic system for anchor shank tension meter |
| CN104368635A (en) * | 2013-08-12 | 2015-02-25 | 平湖市通力机械有限公司 | Multi-purpose auto repair dresser |
| CN104909298A (en) * | 2015-06-01 | 2015-09-16 | 常熟通润汽车修理设备有限公司 | Tailstock device of portable jack oil pump oil storage cylinder |
| CN105293355A (en) * | 2015-11-16 | 2016-02-03 | 刘应才 | Hydraulic pump device for hydraulic jacks and control method of hydraulic pump device |
| CN105293355B (en) * | 2015-11-16 | 2017-10-31 | 安溪钟泰专利技术转移有限公司 | A kind of hydraulic pumping unit and its control method for hydraulic jack |
| CN105540484A (en) * | 2015-12-31 | 2016-05-04 | 常熟通润汽车零部件股份有限公司 | Hydraulic jack for rapidly lifting load |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102303828A (en) | Hydraulic pump structure for double-speed separating type hydraulic jack | |
| CN202280687U (en) | Plunger oil cylinder | |
| CN2851756Y (en) | Ball valve without torsional moment under high pressure | |
| CN202208621U (en) | Hydraulic pump structure of double-speed separating hydraulic jack | |
| CN1757959A (en) | High pressure non-torque ball valve | |
| CN201496019U (en) | Fixed valve salvage device of soft plunger piston oil extracting pump | |
| CN204163964U (en) | Ring valve type hydraulic feedback oil | |
| CN206346271U (en) | Post fire hydrant | |
| CN203979010U (en) | The integrated pre-compressed air cleaner of a kind of way flow flow-through | |
| CN200999864Y (en) | Valve | |
| CN208702831U (en) | A kind of oil-returning structure at a slow speed of oil cylinder | |
| CN201212520Y (en) | Hinged joint pin apparatus | |
| CN205330904U (en) | Mud plunger pump | |
| CN2563296Y (en) | Pressure reducing seat seal packer | |
| CN2512960Y (en) | Ball valve | |
| CN2581722Y (en) | Pressurized water injection pump | |
| CN2859138Y (en) | Anti-reverse means for pipeline | |
| CN1156647C (en) | Valve capable of raising the efficiency of oil pump | |
| CN2511810Y (en) | Efficient boosting valve for oil pump | |
| CN2589666Y (en) | Settled sand burying-proof standing valve for oil-well pump | |
| CN209062518U (en) | A kind of hydraulic elongator | |
| CN2249833Y (en) | Hydraulic sealing soft piston | |
| CN2544091Y (en) | Double-valve slag-proof device | |
| CN210949963U (en) | High seal structure of choke valve | |
| CN203430743U (en) | Automatic lubricating oil compensating mechanism provided with pressure release valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |