CN201267985Y - Hydraulic drawing device with automatic resetting function - Google Patents
Hydraulic drawing device with automatic resetting function Download PDFInfo
- Publication number
- CN201267985Y CN201267985Y CNU2008201534326U CN200820153432U CN201267985Y CN 201267985 Y CN201267985 Y CN 201267985Y CN U2008201534326 U CNU2008201534326 U CN U2008201534326U CN 200820153432 U CN200820153432 U CN 200820153432U CN 201267985 Y CN201267985 Y CN 201267985Y
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- spring
- hole
- cover plate
- stretcher
- 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 - Lifetime
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a hydraulic stretcher with the function of automatic return, which comprises a stretcher nut, a hydraulic piston, a hydraulic oil cylinder, a cover plate, a deflation screw hole and an oil pipe connector hole, wherein, the stretcher nut is coaxially fixed on the hydraulic piston, and the hydraulic piston is matched with the hydraulic oil cylinder, and the cover plate is fixed on the hydraulic oil cylinder, and the stretcher nut extends out from a round hole on the cover plate, and a downward first spring is arranged inside the cover plate, and the top end of the hydraulic oil cylinder is provided with a first spring installation hole corresponding to the first spring, and the lower part of the first spring extends into the first spring installation hole. The hydraulic stretcher realizes the return function of the hydraulic stretching device, and can select the spring with different elastic forces according to the requirements, thereby having wide application range and simple and convenient operation.
Description
Technical field
The utility model relates to hydraulic means, relates to particularly that a kind of band automatically resets and the hydraulic elongator of stopping means, has solved in the past that stretcher can't automatically reset and because of the excessive easily impaired problem of pump pressure, and parts interchangeability is good, applied widely.
Background technology
Hydraulic elongator in the course of the work, to inject hydraulic oil in the middle of hydraulic cylinder and the hydraulic piston, because the operating pressure of oil is big, the gravity of hydraulic piston is compared the operating pressure of hydraulic oil and can be ignored, the pressure accumulation effect meeting of oil stops hydraulic piston to reset after the termination of pumping, thereby can between working chamber, retain more hydraulic oil, and reset in order to realize faster, need by external force the oil pressure oil sump tank.The problem that can not reset has rapidly reduced operating efficiency on the one hand, has also brought inconvenience to work on the other hand.On the other hand, if the infinite place device if pressure is excessive, can produce harmful effect to stretcher itself and component of machine.
Existing hydraulic elongator in use can't have above two characteristics concurrently, and what have can not reset automatically fast, needs applied force to help through; What also have does not have a stopping means, can produce harmful effect to parts such as bolts when pressure is excessive.The utility model has carried out the improvement design on the basis of study forefathers design, purposes such as new design reaches easy to operate and saving is artificial, material.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of novel having to reset and the hydraulic tensioning device of limit function.Having solved the hydraulic piston that produces in other stretchers is difficult for resetting and the overhigh pumping pressure problem.
At above-mentioned concrete function, the utility model proposes following technical scheme and realize the foregoing invention purpose:
A kind of hydraulic elongator that possesses auto-reset function, comprise the stretcher nut, hydraulic piston, hydraulic jack, cover plate, bleed screw hole and oil connection hole, the coaxial heart of described stretcher nut is fixed on the hydraulic piston, hydraulic piston matches with hydraulic jack, described cover plate is fixed on the hydraulic jack, described stretcher nut stretches out in the circular hole on cover plate, it is characterized in that, be provided with the first downward spring in the described cover plate, the top of the hydraulic jack relative with first spring position is provided with first spring mounting hole, and the bottom of first spring stretches in first spring mounting hole.
As the prioritization scheme on the said structure basis, the utlity model has the automatic spacing function in order to make, offering a screw that runs through inside and outside the oil cylinder on the described hydraulic piston, be provided with a relief valve in the described screw, this relief valve includes a drive link, stopper ring, steel ball, spring and case are formed, described case outside is provided with external screw thread, the inside of case is provided with through hole, the top of through hole is fixed with stopper ring, in the middle of the stopper ring is circular port, described drive link middle part is provided with bulge loop, drive link penetrates the through hole in the case, the upper end of drive link is the outstanding peak that becomes relief valve in the circular port of stopper ring, bulge loop on the drive link places the bottom of stop valve, the bottom of drive link is butted on the described steel ball, is provided with a step that stops steel ball to make progress in the described case through hole, and the bottom of steel ball is provided with second spring.
By technique scheme, the utility model has brought following technological merit than prior art:
The design has spring assembly, utilizes the elastic force of spring to realize resetting of hydraulic piston after hydraulic pump stops oil.Increased simultaneously a relief valve again, the ascending amount of control hydraulic piston.By said structure, make invention have following advantage:
1. operation is convenient, saves man-hour.Owing to only on the said structure basis, increased back-moving spring, made and to realize automatically resetting; Increased relief valve again, made when arriving certain altitude, automatically hydraulic oil has been discharged, reduced hydraulic pressure causes damage to part possibility, owing to belong to automatic operation, make that need not to load extra external force just can realize, brings convenience in operation again.
2. spring assembly is changed conveniently, and is practical.Realize that the spring of reset function can change as required because the required pulling force difference of hydraulic elongator of different model, then can select for use as required can not elastic force spring.Spring is positioned at spring groove simultaneously, can get at any time and change handled easily.And can suitably change the spring assembly specification, applied widely.
3. relief valve interchangeability is good.The same with spring, relief valve also can be changed as required.
Description of drawings
Fig. 1 is a kind of vertical view that possesses the hydraulic elongator of auto-reset function of the present utility model.
Fig. 2 is that the A-A of a kind of hydraulic elongator that possesses auto-reset function shown in Figure 1 is to cutaway view.
Fig. 3 be during a kind of hydraulic elongator that possesses auto-reset function of the present utility model uses when pump oil not B-B to configuration state figure.
Fig. 4 be during a kind of hydraulic elongator that possesses auto-reset function of the present utility model uses behind pump oil B-B to configuration state figure.
Fig. 5 is the structural representation of relief valve in a kind of hydraulic elongator that possesses auto-reset function of the present utility model.
Fig. 6 is the front view of hydraulic piston in a kind of hydraulic elongator that possesses auto-reset function of the present utility model.
Fig. 7 is the vertical view of hydraulic piston in a kind of hydraulic elongator that possesses auto-reset function of the present utility model.
Wherein,
1-stretcher nut; 2-bleed screw hole; 3-hydraulic piston;
4-hydraulic jack; 5-handle; 6-oil connection hole;
7-cover plate; 8-handle set bolt; 9-relief valve;
10-double-screw bolt; 11-the first spring; 12-cover plate bolt;
13-sealing ring; 14-sealing ring; 15-stud nut;
16-drive link; 17-stopper ring; 18-case; 19-steel ball;
20-the second spring; 21-packing ring; 22-stopper ring;
23-sealing ring mounting groove, 24-the first spring mounting hole; 25-relief valve installing hole
The specific embodiment
Come hydraulic tensioning device of the present utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment, but can not limit protection domain of the present utility model with this.
By Fig. 1 and Fig. 2 a kind of basic structure that possesses the hydraulic elongator of auto-reset function of the present utility model as can be seen.Fig. 1 is a kind of vertical view that possesses the hydraulic elongator of auto-reset function of the present utility model, and Fig. 2 is that the A-A of a kind of hydraulic elongator that possesses auto-reset function shown in Figure 1 is to cutaway view.As seen from the figure, hydraulic elongator primary structure of the present utility model includes stretcher nut 1, hydraulic piston 3, hydraulic jack 4, cover plate 7 and handle 5.Wherein, described stretcher nut 1 coaxial heart is fixed on the hydraulic piston 3, and hydraulic piston 3 matches with hydraulic jack 4, and described cover plate 7 is fixed on the hydraulic jack 4, and described stretcher nut 1 stretches out in the circular hole on cover plate 7.Handle 5 is to hang and draws shape to be fixed on the hydraulic jack 4, and the two ends of handle 5 are fixed by handle set bolt 8.Cover plate 7 is cylindric and is buckled on the hydraulic jack 4, in the middle of its bottom circular hole is arranged, and the internal diameter of this circular hole is slightly larger than the external diameter of stretcher nut 1, makes the stretcher nut to stretch out from part in the cover plate 7.
The structure of hydraulic piston 3 as shown in Figure 6 and Figure 7, Fig. 6 is the front view of hydraulic piston in a kind of hydraulic elongator that possesses auto-reset function of the present utility model, and Fig. 7 is the vertical view of hydraulic piston in a kind of hydraulic elongator that possesses auto-reset function of the present utility model.As seen from the figure, the bottom of hydraulic piston 3 is provided with two seals circle mounting groove 23, in order to place sealing ring 14 and sealing ring 15, makes that hydraulic piston 3 and hydraulic jack 4 sealings are tight, prevents leaked liquid, and then influences hydraulic pressure.Overlooking of hydraulic piston 3 is rounded, is provided with 15 holes on the upper surface of hydraulic piston 3.Wherein 12 holes are that 24, one of first spring mounting holes are that 6, one in oil connection hole is a relief valve installing hole 25, and another is bleed screw hole 2.First line that oil connection hole 6 and bleed screw hole are 2 is crossed the center of circle, and second line in the relief valve installing hole 25 and the center of circle is perpendicular to first line in 2 in oil connection hole 6 and bleed screw hole, and its intersection point is in the center of circle.12 first 2 per three of spring mounting holes are one group, are distributed in formed four intervals of first line and second line and extended line thereof.
Reset signal as shown in Figure 3 and Figure 4 at hydraulic tensioning device of the present utility model, Fig. 3 be during a kind of hydraulic elongator that possesses auto-reset function of the present utility model uses when pump oil not B-B to configuration state figure, Fig. 4 be during a kind of hydraulic elongator that possesses auto-reset function of the present utility model uses behind pump oil B-B to configuration state figure.As seen from the figure, bolt 10 is being stretched, when it was broken away from stubborn bolt and nut 15 thereon, the upper end of bolt 10 was screwed in the stretcher nut 1, and the bottom of stretcher nut 1 is fixed on hydraulic piston 3 tops.12 first spring 11 tops that are positioned in 12 first spring mounting holes 24 are butted on cover plate 7 bottoms.7 of cover plates are fixed on the piston oil pipe 4 by cover plate bolt 12.
After being inserted into the snap joint of oil pipe in the oil connection hole 6, charge into oil, force hydraulic piston 3 to rise, drive stretcher nut 1 and rise with respect to hydraulic jack 4 by oil pressure to the oil pocket of 4 of hydraulic piston 3 and hydraulic jacks.This moment, first spring 11 was subjected to shrinking from the pressure of 4 of cover plate 7 and hydraulic pistons.After bolt 10 and bolt and nut 15 break away from, promote hydraulic piston 3 by the elastic force of first spring 11 and reset.
In order to realize reset function of the present utility model, in cover plate 7, be provided with the first downward spring 11, the bottom that the top of the hydraulic jack 4 relative with first spring, 11 positions is provided with first spring mounting hole, 24, the first springs 11 stretches in first spring mounting hole 24.12 first springs 11 are installed are for elastic force even among the embodiment, and be enough to promote hydraulic piston 3 and reset.Certainly, the size of elastic force can realize by first spring of transposing different model.
In order to realize limit function of the present utility model, adopted relief valve 9 has been installed on hydraulic piston 3, relief valve 9 is above-mentioned relief valve installing holes 25 in the installation site of hydraulic piston 3, this relief valve installing hole 25 runs through the top and the bottom of hydraulic piston 3, in the time of promptly in hydraulic piston 3 installations and hydraulic oil pipe 4, oil pocket can be communicated in the external world by relief valve installing hole 25.The structure of relief valve itself as shown in Figure 5, Fig. 5 is the structural representation of relief valve in a kind of hydraulic elongator that possesses auto-reset function of the present utility model.As seen from the figure, this relief valve 9 includes drive link 16, stopper ring 17, steel ball 19, second spring 20 and case 18.
Described case 18 outsides are provided with external screw thread, are matched with the internal thread of relief valve installing hole 25 on the hydraulic piston 3.The inside of case 18 is provided with through hole, and the top of through hole is fixed with stopper ring 17, is circular port in the middle of the stopper ring 7.
Described drive link 16 middle parts are provided with bulge loop, drive link 16 penetrates the through hole in the case 18, the upper end of drive link 16 is the outstanding peak that becomes relief valve 9 in the circular port of stopper ring 17, bulge loop on the drive link 16 places the bottom of stop valve 7, the bottom of drive link 16 is butted on the described steel ball 19, be provided with a step that stops steel ball 19 to make progress in described case 18 through holes, the bottom of steel ball 19 is provided with second spring 20.When the hydraulic tensioning device is not worked, steel ball 19 is subjected to the pretightning force of second spring 20 and upwards blocks bleed outlet, hydraulic oil injects after the oil pocket, hydraulic piston 3 is up, when the excessive piston stroke of pressure surpasses certain limit, cover plate 7 is pushed up on drive link 16 tops, can move downward, and following pressing steel balls 19, bottom second spring, 20 pressurizeds are shunk, and steel ball 19 also moves downward and opens bleed outlet, hydraulic oil is upwards released, realized spacing purpose, the length of drive link 16 also has interchangeability, can regulate the stroke of hydraulic piston 3 by the drive link 16 of changing different length, so practicality is relatively good.
The design also considers, if there is gas oil pocket inside, can produce the problem that pressure does not increase, in order to address this problem, the design has installed bleed screw at 2 places, bleed screw hole, if there is gas oil pocket inside, just can fill with oil to oil pocket earlier with lower pressure, discharge gas by the screw of outwarding winding, screw screw again, so just can reach the pump pressure requirement.
Claims (2)
1. hydraulic elongator that possesses auto-reset function, comprise stretcher nut (1), hydraulic piston (3), hydraulic jack (4), cover plate (7), bleed screw hole (2) and oil connection hole (6), the coaxial heart of described stretcher nut (1) is fixed on the hydraulic piston (3), hydraulic piston (3) matches with hydraulic jack (4), described cover plate (7) is fixed on the hydraulic jack (4), described stretcher nut (1) stretches out in cover plate (7) is gone up circular hole, it is characterized in that, be provided with downward first spring (11) in the described cover plate (7), the top of the hydraulic jack (4) relative with first spring (11) position is provided with first spring mounting hole, and the bottom of first spring (11) stretches in first spring mounting hole.
2. a kind of hydraulic elongator that possesses auto-reset function according to claim 1, it is characterized in that, offer one on the described hydraulic piston (3) and run through the inside and outside screw of oil cylinder, be provided with a relief valve (9) in the described screw, this relief valve (9) includes a drive link (16), stopper ring (17), steel ball (19), spring (20) and case (18) are formed, described case (18) outside is provided with external screw thread, the inside of case (18) is provided with through hole, the top of through hole is fixed with stopper ring (17), in the middle of the stopper ring (7) is circular port, described drive link (16) middle part is provided with bulge loop, drive link (16) penetrates the through hole in the case (18), the upper end of drive link (16) is the outstanding peak that becomes relief valve (9) in the circular port of stopper ring (17), bulge loop on the drive link (16) places the bottom of stop valve (7), the bottom of drive link (16) is butted on the described steel ball (19), be provided with a step that stops steel ball (19) to make progress in described case (18) through hole, the bottom of steel ball (19) is provided with second spring (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201534326U CN201267985Y (en) | 2008-09-24 | 2008-09-24 | Hydraulic drawing device with automatic resetting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201534326U CN201267985Y (en) | 2008-09-24 | 2008-09-24 | Hydraulic drawing device with automatic resetting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201267985Y true CN201267985Y (en) | 2009-07-08 |
Family
ID=40840567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201534326U Expired - Lifetime CN201267985Y (en) | 2008-09-24 | 2008-09-24 | Hydraulic drawing device with automatic resetting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201267985Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170833A (en) * | 2013-03-05 | 2013-06-26 | 马鞍山市三江机械有限公司 | Novel double-level tensioner |
-
2008
- 2008-09-24 CN CNU2008201534326U patent/CN201267985Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170833A (en) * | 2013-03-05 | 2013-06-26 | 马鞍山市三江机械有限公司 | Novel double-level tensioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10041515B2 (en) | Reducing noise double-channel oil pump | |
| CN201267984Y (en) | Hydraulic drawing device with locating function | |
| CN101705928A (en) | Concrete transfer pump | |
| CN201531483U (en) | Single-acting fast closing/double-acting boosting hydraulic cylinder | |
| CN104591014A (en) | Telescopic cylinder, landing leg control system and crane | |
| CN203817743U (en) | Hydraulic bolt tensioner | |
| CN201267985Y (en) | Hydraulic drawing device with automatic resetting function | |
| CN204003700U (en) | Oil cylinder sequentially-operating hydraulic control system and engineering mechanical device | |
| CN202431468U (en) | Plunger pump with simple structure | |
| CN207736240U (en) | A kind of prefill valve dismantling device of 500t oil pipes end upsetting machine | |
| CN103244507A (en) | Piston air chamber buffer controlled-release cavity arranged on cylinder piston rod | |
| CN207018297U (en) | A kind of double-piston hydraulic oil cylinder | |
| CN201908814U (en) | Two-stage pump cylinder and two-stage plunger piston combined pump cylinder pipe type pump | |
| CN203925968U (en) | A kind of power end of adjustable displacement plunger reciprocating pump | |
| CN204983678U (en) | Automatic hydraulic pressure double -cylinder high strength bolt tensioner resets | |
| CN202240422U (en) | Hydraulic stretcher with spring return function | |
| CN202209327U (en) | Connection mode of hydraulic distributor | |
| CN201124575Y (en) | Hydraulic drawing device of press | |
| CN201144666Y (en) | Blowout-preventing double-functional valve in oil pipe | |
| CN203499646U (en) | Hydraulic type beam-pumping unit | |
| CN2916182Y (en) | Short-crankshaft driven four-plunger pump with plungers in layered arrangement manner | |
| CN203906416U (en) | Pressure conversion device for converting air pressure into hydraulic pressure in whole process | |
| RU2774481C1 (en) | Energy-saving hydraulic drive of the boom lifting mechanism of the forest manipulator | |
| CN201736190U (en) | Mounting tool for valve seat of one-way valve at inlet of diaphragm pump | |
| CN202560257U (en) | Plug-in type middle-flow rigid-seal two-way lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090708 |
|
| CX01 | Expiry of patent term |