CN203411280U - Jack for internally regulating oil pump relief valve - Google Patents
Jack for internally regulating oil pump relief valve Download PDFInfo
- Publication number
- CN203411280U CN203411280U CN201320408348.5U CN201320408348U CN203411280U CN 203411280 U CN203411280 U CN 203411280U CN 201320408348 U CN201320408348 U CN 201320408348U CN 203411280 U CN203411280 U CN 203411280U
- Authority
- CN
- China
- Prior art keywords
- oil pump
- jack
- pass valve
- relief valve
- valve
- 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.)
- Expired - Fee Related
Links
- 230000001105 regulatory effect Effects 0.000 title abstract description 4
- 239000003921 oil Substances 0.000 description 39
- 238000005086 pumping Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000006071 cream Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a jack for internally regulating an oil pump relief valve, and aims at providing the jack, which can conveniently adjust the relief valve to change a work load, can effectively avoid a misoperation, and is simple and practical. The technical scheme is that the jack for internally regulating the oil pump relief valve comprises a valve body, a cylinder, an oil pump, a pressing handle, and a hydraulic component; the cylinder is arranged on the valve body for lifting a heavy object; the oil pump presses oil to the cylinder; the pressing handle drives a core of the oil pump to move; the hydraulic component is arranged below the oil pump and located inside the valve body; the hydraulic component is also provided with the relief valve including a spring. The jack is characterized in that a fixed hole communicated with the oil pump and the cylinder is produced on the hydraulic component; the fixed hole is arranged above the relief valve; the axis direction of the fixed hole is the same as that of the oil pump; an adjusting base matched with a valve core is also arranged at the top end of the relief valve; the adjusting base can be movably located into the fixed hole along the axis of the oil pump through a thread matching structure; an overflow hole matched with the valve core is arranged on the adjusting base.
Description
Technical field
The utility model relates to a kind of lifting gear, specifically a kind of hydraulic jack.
Background technology
By pass valve is a kind of pressure control device on jack, mainly plays the effect of level pressure overflow and safety guard-safeguard, in using, need to carry out according to the actual load of jack the work numerical value of Correctly adjust by pass valve.When jack works, by pass valve is in closed condition; When (internal system pressure surpasses predetermined value) transfinited in jack load, by pass valve to carry out overload protection, overflows in the outer shoe cream room of oil cylinder unnecessary hydraulic oil unlatching, and keeping system pressure.
Existing jack (as shown in Figure 3), by pass valve can regulate in valve body outside; Although easy to adjust, also can produce potential safety hazard (thereby layman very easily maloperation cause overload problem).
Technical personnel has been done relevant improvement for this reason, and by pass valve is arranged on to (as shown in Figure 4, hydraulic package arranges in valve body) in hydraulic package 5; Like this, thus layman just cannot contact easily and eliminate potential safety hazard.But when actual assembled jack, owing to cannot predicting by pass valve numerical value, need to after all having assembled, hydraulic package could measure by pass valve numerical value; And when the numerical value recording is not in setting range, all to first dismantle the pump core (pump core and pumping cylinder are that activity relationship and pump core are movable) of oil pump, remove again pumping cylinder (pumping cylinder and valve body are that screw thread closely cooperates) and take out hydraulic package, then use professional tool to regulate; Again because hydraulic package is small precision components, sometimes also need through repeatedly adjusting, just can reach predetermined value, and pumping cylinder is that screw thread closely cooperates with coordinating of hydraulic package, valve body, dismounting is also quite required great effort, and repeatedly assembling is easy to damage sealing member, and comparatively bothersome effort and uneconomical seems; Therefore also need further improvement.
Utility model content
The purpose of this utility model is the deficiency overcoming in above-mentioned background technology, and a kind of jack of interior debugging oil pump by pass valve is provided, and this jack easily regulation relief valve, to change working load, and can effectively be avoided maloperation, simultaneously also simple and practical.
The technical solution of the utility model is: a kind of jack of interior debugging oil pump by pass valve, comprise valve body, and be arranged on valve body oil cylinder for lifting weight, to the oil pump of oil cylinder force feed, drive pressing hand, being arranged on oil pump below and being positioned at the hydraulic package in valve body of oil pump pump core motion; In described hydraulic package, be also provided with the by pass valve that comprises spring; It is characterized in that: on described hydraulic package, be shaped with the fixed orifice that is communicated with oil pump and oil cylinder; Described fixed hole position is identical with oil pump axis direction in by pass valve top and its axis direction; By pass valve top also arranges an adjustment seat coordinating with spool, and this adjustment seat can be positioned in fixed orifice along oil pump axis by thread matching structure movably; In described adjustment seat, be shaped with the overflow weir for coordinating with spool.
Described overflow weir connects the two ends of adjustment seat along oil pump axis.
Make progress top pressure valve core this spool top is pressed in to overflow weir bottom of described spring.
The beneficial effects of the utility model are:
The utility model is set up an adjustment seat directly coordinating with spool on by pass valve, again by the arranged direction of by pass valve from level make into vertically and be arranged on oil pump under; In the time of need to adjusting by pass valve, only needing to pull down oil pump pump core can operate by pass valve (by the pressure of rotation adjustment seat capable of regulating by pass valve medi-spring, without dismantling oil pump pumping cylinder and taking out hydraulic package), not only convenient and swift, time saving and energy saving, also avoided the problem of layman's maloperation; In addition, structure of the present utility model comparatively simply and also very practical.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is the structure for amplifying schematic diagram of A portion in Fig. 1.
Fig. 3 is the main TV structure schematic diagram of existing jack.
Fig. 4 is the main TV structure schematic diagram after Fig. 3 is tentatively improved.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
A jack for interior debugging oil pump by pass valve, mainly comprise valve body 1, for the oil cylinder 2 of lifting weight, to the oil pump 3 of oil cylinder force feed, drive pressing hand 4, being arranged on oil pump below and being positioned at the hydraulic package 5 in valve body of oil pump pump core 3-1 motion; In hydraulic package, be also provided with by pass valve, oil cylinder and oil pump are installed on valve body.
Above structure is same as the prior art; Improvements of the present utility model are:
As depicted in figs. 1 and 2, on hydraulic package, be shaped with fixed orifice 6, fixed hole position under oil pump and the axis direction of fixed orifice identical with the axis direction of oil pump; The bottom of fixed orifice is communicated with a horizontal-extending and connects the hydraulic pressure oilhole 10 to hydraulic package outer circumference surface, this hydraulic pressure oilhole is not only communicated with the overflow weir 11 that is connected oil cylinder on valve body, is also communicated with (in return port, being provided with check valve 13) with the return port 12 that is connected oil pump on hydraulic package.Thereby fixed orifice, hydraulic pressure oilhole can be connected and form the overflow ducts that is connected oil pump and oil cylinder with overflow weir, thereby overflow weir, hydraulic pressure oilhole and return port can be interconnected, formation is connected the return flow line of oil cylinder and oil pump.
In described by pass valve: adjustment seat 7 can be positioned at fixed orifice upper end movably along oil pump axis, between the outer circumference surface of adjustment seat and the inner peripheral surface of fixed orifice, by helicitic texture, be connected (seal ring 7-2 is also housed on the outer circumference surface of adjustment seat), rotate adjustment seat and can change the position (axial location) of adjustment seat in fixed orifice; In described adjustment seat, be shaped with the overflow weir 7-1 of overflow effect, overflow weir connects the two ends of adjustment seat along oil pump axis; Spool 8 is subject to spring 9 pressure-actings and upwards suppresses overflow weir bottom, and the bottom that is pressed in fixed orifice is pushed up in the bottom of spring.Therefore the dual-use function that, adjustment seat has overflow and regulates oil pressure relief.
When (internal system pressure surpass predetermined value) is transfinited in the utility model load, hydraulic oil backs down spool after by overflow through hole, then by hydraulic pressure oilhole and overflow weir, flows in the outer shoe cream room of oil cylinder; When jack by pass valve numerical value is not in claimed range, only need to take off oil pump pump core, then serviceable tool (screwdriver) rotates the length that adjustment seat changes spring, just can regulate quickly by pass valve.
Claims (3)
1. debug the jack of oil pump by pass valve in one kind, comprise valve body (1), and be arranged on valve body oil cylinder (2) for lifting weight, to the oil pump (3) of oil cylinder force feed, drive pressing hand (4), being arranged on oil pump below and being positioned at the hydraulic package (5) in valve body of oil pump pump core (3-1) motion; In described hydraulic package, be also provided with the by pass valve that comprises spring (9); It is characterized in that: on described hydraulic package, be shaped with the fixed orifice (6) that is communicated with oil pump and oil cylinder; Described fixed hole position is identical with oil pump axis direction in by pass valve top and its axis direction; By pass valve top also arranges an adjustment seat (7) coordinating with spool (8), and this adjustment seat can be positioned in fixed orifice along oil pump axis by thread matching structure movably; In described adjustment seat, be shaped with the overflow weir (7-1) for coordinating with spool.
2. the jack of a kind of interior debugging oil pump by pass valve according to claim 1, is characterized in that: described overflow weir connects the two ends of adjustment seat along oil pump axis.
3. the jack of a kind of interior debugging oil pump by pass valve according to claim 2, is characterized in that: make progress top pressure valve core this spool top is pressed in to overflow weir bottom of described spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408348.5U CN203411280U (en) | 2013-07-09 | 2013-07-09 | Jack for internally regulating oil pump relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320408348.5U CN203411280U (en) | 2013-07-09 | 2013-07-09 | Jack for internally regulating oil pump relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203411280U true CN203411280U (en) | 2014-01-29 |
Family
ID=49974186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320408348.5U Expired - Fee Related CN203411280U (en) | 2013-07-09 | 2013-07-09 | Jack for internally regulating oil pump relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203411280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381413A (en) * | 2017-07-05 | 2017-11-24 | 吉媛 | A kind of adjustable type jack |
| CN110817728A (en) * | 2018-08-13 | 2020-02-21 | 施耐宝公司 | Hydraulic power unit for jack with internally adjustable safety relief valve |
-
2013
- 2013-07-09 CN CN201320408348.5U patent/CN203411280U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381413A (en) * | 2017-07-05 | 2017-11-24 | 吉媛 | A kind of adjustable type jack |
| CN110817728A (en) * | 2018-08-13 | 2020-02-21 | 施耐宝公司 | Hydraulic power unit for jack with internally adjustable safety relief valve |
| CN110817728B (en) * | 2018-08-13 | 2021-08-10 | 施耐宝公司 | Hydraulic power unit for jack with internally adjustable safety relief valve |
| US11111119B2 (en) | 2018-08-13 | 2021-09-07 | Snap-On Incorporated | Hydraulic power unit for jack with internally adjustable safety relief valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201875226U (en) | Sequence valve | |
| CN203292811U (en) | Dispensing assembly machine of connection torsion point of valve body cap | |
| CN203411280U (en) | Jack for internally regulating oil pump relief valve | |
| WO2016183995A1 (en) | Hydraulic oil pump with automatic speed regulation | |
| CN201916190U (en) | Electric pump | |
| CN205278517U (en) | Electronic air -vent valve | |
| CN203656231U (en) | Hand-operated valve | |
| CN2873384Y (en) | Speed regulating valve for sheartype band saw feeding system | |
| CN203614835U (en) | Plate type overflow valve | |
| CN201606090U (en) | Self-locking manual pilot valve | |
| CN202344260U (en) | Quick positioning device with flexible pin | |
| CN106382371A (en) | Throttling valve capable of saving space | |
| CN202773340U (en) | Hydraulic control device for rice transplanter | |
| CN202834244U (en) | Small-flow direct-acting relief valve | |
| CN207569290U (en) | A kind of plunger-type pump of high pressure cleaner pressure regulator valve | |
| CN204175684U (en) | A kind of bender hydraulic system device of adjustable stroke | |
| CN202327310U (en) | Linear stroke electric actuator | |
| CN204339259U (en) | A kind of compact hydraulic pre-tightening device for tightening bolt | |
| CN205447129U (en) | Mechanical type machine depressed place platform stabilizer | |
| CN202545392U (en) | Hand control integrated valve for combine harvester | |
| CN204328186U (en) | Heavy oil storage tank special valve | |
| CN220956026U (en) | Internal gear pump with overflow function | |
| CN202971070U (en) | Variable plunger pump with plurality of plungers | |
| CN203809392U (en) | Hydraulic assembly of wood grinder | |
| CN201866008U (en) | Rear cover assembly of oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |
|
| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 25, 2023, the expiration and termination of the 39-volume 3001 patent Number: 30-01 Volume: 39 |
|
| CU01 | Correction of utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |