CN207313015U - A kind of hydraulic jack for prestressed stretch-draw - Google Patents
A kind of hydraulic jack for prestressed stretch-draw Download PDFInfo
- Publication number
- CN207313015U CN207313015U CN201721446348.9U CN201721446348U CN207313015U CN 207313015 U CN207313015 U CN 207313015U CN 201721446348 U CN201721446348 U CN 201721446348U CN 207313015 U CN207313015 U CN 207313015U
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- China
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- oil cylinder
- oil
- piston
- inlets
- hydraulic jack
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Abstract
The utility model discloses a kind of hydraulic jack for prestressed stretch-draw, including：Oil cylinder, piston and punching set, the punching is set in oil cylinder, the piston is arranged between oil cylinder and punching set in which can move back and forth, A oil inlets, B oil inlets are respectively equipped with the both ends of oil cylinder, in one end where oil cylinder A oil inlets, the nut and sealing plate fitted together seals, and the piston can be stretched out from one end where oil cylinder B oil inlets；It is characterized in that, being equipped with the step prominent into oil cylinder on one end where oil cylinder B oil inlets, a supporting is set between oil cylinder and piston, and the protrusion coordinated with step is equipped with splicing sleeve.The utility model eliminates rear sealing plate and back nut in conventional art, is changed to the splicing sleeve that changes the outfit, and the step of a 5mm or so need to be only added originally on oil cylinder, processing is easier, strong degree is far superior to traditional nut and screw-internal thread fit, and anti-fluid power is strong, and security is good.
Description
Technical field
It the utility model is related to bridge, road construction equipment, more particularly to a kind of prestressing force hydraulic jack.
Background technology
As shown in Figure 1-Figure 3, traditional prestressing force hydraulic jack is by oil cylinder 01, piston 02, front nut 03, preceding sealing
Plate 04, back nut 05, rear sealing plate 06, punching cover 07 etc. seven component composition, and the punching set 07 is arranged in oil cylinder 01, institute
State piston 02 and be arranged on can moving back and forth between oil cylinder 01 and punching set 07, the front nut 03, preceding sealing plate 04 are assembled in
One end of oil cylinder 01, the back nut 05, rear sealing plate 06 are assembled in the other end of oil cylinder 01, and the piston 02 can be from oil cylinder 01
The other end stretch out.Wear-resistant guiding trough of belt 08 and seal groove 09 are equipped with rear sealing shroud 04, is equipped with back nut 05 anti-
Konisphere groove 010.
During work, one end of steel strand wires to be tensed enters punching set and is connected with piston 02.High pressure oil enters oil from A oil inlets
Cylinder 01, dragging piston 02 moves right, into working procedure and state, i.e. work completion after piston is moved into place.Then by changing
Commutate to valve, high pressure oil enters oil cylinder 01 from B oil inlets, promotes piston 02 to be resetted to moving to left.
However, in this traditional prestressing force hydraulic jack, since back nut 05 is smaller, when high pressure oil is from B oil inlets
Mouth enters oil cylinder 01, promotes piston 02 to after moving left to bottom, if pressure continues rising, (such as operating personnel forget to close valve
Door), winged back nut is easily collapsed, there are great security risk.
The content of the invention
For problems of the prior art, the purpose of this utility model is to provide a kind of security is good, processing letter
Just, cost low prestressing force hydraulic jack roof construction.
To achieve the above objectives, the utility model adopts the following technical solution.
A kind of hydraulic jack for prestressed stretch-draw, including：Oil cylinder, piston and punching set, the punching set are set
In oil cylinder, the piston is arranged between oil cylinder and punching set in which can move back and forth, and A oil inlets are respectively equipped with the both ends of oil cylinder
Mouthful, B oil inlets, in one end where oil cylinder A oil inlets, the nut and sealing plate fitted together seals, and the piston can be from
One end where oil cylinder B oil inlets is stretched out；Dash forward it is characterized in that, being equipped with one end where oil cylinder B oil inlets into oil cylinder
The step gone out, a supporting are set between oil cylinder and piston, and the protrusion coordinated with step is equipped with splicing sleeve.
As a further illustration of the above scheme, the step protrudes oil cylinder inner surface 3-10mm.
As a further illustration of the above scheme, wear-resistant guiding trough of belt, seal groove and dust-proof ring recess on splicing sleeve.
The beneficial effects of the utility model are：
First, rear sealing plate, the back nut in conventional art are replaced using splicing sleeve, structure is simpler, avoids at the same time
The processes such as the positioning of back nut, heat treatment, reduce processing capacity, and processing is easier.
2nd, due to the structural soundness that splicing sleeve is brought, whole hydraulic jack can be made shorter, saved certain
Material, so as to reduce cost.
3rd, after replacing rear sealing plate, back nut using splicing sleeve so that bearing-surface is widened, and is supported by original sealing plate
Face 20-25mm wide increases to 40-50mm wide, and work is more steady.
Brief description of the drawings
Fig. 1 show traditional prestressing force hydraulic jack structure diagram.
Sealing plate structure schematic diagram after Fig. 2 is shown in Fig. 1.
Fig. 3 show back nut structure diagram in Fig. 1.
Fig. 4 show hydraulic jack structure diagram provided by the utility model.
Fig. 5 show splicing sleeve structure diagram in Fig. 4.
Description of reference numerals：
01：Oil cylinder, 02：Piston, 03：Front nut, 04：Preceding sealing plate, 05：Back nut, 06：Sealing plate afterwards, 07：Punching
Set, 08：Wear-resistant guiding trough of belt, 09：Seal groove, 010：Dust-proof ring recess.
1：Oil cylinder, 2：Piston, 3：Punching set, 4：Nut, 5：Sealing plate, 6：Step, 7：Splicing sleeve, 8：Protrusion, 9：It is resistance to
Mill guiding trough of belt, 10：Seal groove, 11：Dust-proof ring recess.
Embodiment
, it is necessary to explanation in the description of the utility model, for the noun of locality, if any term " " center ", " transverse direction ",
" longitudinal direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ",
The indicating position such as " bottom ", " interior ", " outer ", " clockwise ", " counterclockwise " and position relationship are based on orientation shown in the drawings or position
Relation is put, narration the utility model is for only for ease of and simplifies description, rather than indicate or imply signified device or element
There must be specific orientation, construct and operate with particular orientation, it is impossible to be interpreted as the specific protection model of limitation the utility model
Enclose.
In the utility model, except as otherwise clear stipulaties and restriction, if any term " assembling ", " connected ", " connection " term
It should go to understand as broad sense, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can also be machine
Tool connects；It can be directly connected or be connected by intermediary, can be connected inside two elements.For
For those of ordinary skill in the art, it can understand that specific in the utility model of above-mentioned term containing as the case may be
Justice.
In utility model, unless otherwise prescribed and limit, fisrt feature second feature it " on " or it " under " can be with
Directly contacted including the first and second features, it is not directly to contact but pass through it that can also include fisrt feature and second feature
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " under " and " above " include fisrt feature
Directly over second feature and oblique upper, or it is only to represent that fisrt feature level height is higher than the height of second feature.First
Feature second feature " on ", " under " and " below " include fisrt feature immediately below second feature or obliquely downward, or only
Only represent that fisrt feature level height is less than second feature.
With reference to the attached drawing of specification, by being further described to specific embodiment of the present utility model, make
The technical solution of the utility model and its advantage are clearer, clear and definite.It is to show to describe embodiment below with reference to attached drawing
Example property, it is intended to explain the utility model, and it is not intended that limitation to the utility model.
As shown in Figure 4, Figure 5, a kind of hydraulic jack for prestressed stretch-draw, including：Oil cylinder 1, piston 2 and punching set
3, the punching set 3 is arranged in oil cylinder 1, and the piston 2 is arranged between oil cylinder 1 and punching set 3 in which can move back and forth, in oil
The both ends of cylinder 1 are respectively equipped with A oil inlets, B oil inlets, and 4 He of nut fitted together is used in one end where oil cylinder A oil inlets
Sealing plate 5 seals, and the piston 2 can be stretched out from one end where oil cylinder B oil inlets；It is characterized in that, in oil cylinder B oil inlets institute
One end on be equipped with the step 6 prominent into oil cylinder, a splicing sleeve 7 is arranged between oil cylinder 1 and piston 2, on splicing sleeve 7
Equipped with the protrusion 8 coordinated with step 6.
Wherein, the step 6 protrudes 1 inner surface 5mm of oil cylinder.Wear-resistant guiding trough of belt 9, seal groove are gone back on splicing sleeve 7
10 and dust-proof ring recess 11, in order to the installation of wear-resistant guiding band, sealing ring and dustband.In other embodiments, according to reality
The difference that border needs, the height that the step 6 protrudes oil cylinder inner surface can be adjusted suitably, be not limited to the present embodiment.
A kind of hydraulic jack for prestressed stretch-draw provided in this embodiment, eliminates the rear sealing in conventional art
Plate and back nut, are changed to the splicing sleeve that changes the outfit, and one layer of internal thread for originally needing to add on oil cylinder now omits, and need to only add a 5mm left
Right step, processing are easier.Meanwhile its strong degree is far superior to traditional nut to step with the cooperation in protrusion portion
With screw-internal thread fit, anti-fluid power is strong, and security is good.Furthermore, it is possible to certain material is saved, so as to reduce cost.
From the foregoing description of structures and principles it should be understood by those skilled in the art that, the utility model
Above-mentioned embodiment is not limited to, it is equal using the improvement and replacement of techniques well known on the basis of the utility model
Falling should be limited in the scope of protection of the utility model, the scope of protection of the utility model by each claim and its equivalent
It.
Claims (3)
1. a kind of hydraulic jack for prestressed stretch-draw, including：Oil cylinder, piston and punching set, the punching are set on
In oil cylinder, the piston is arranged between oil cylinder and punching set in which can move back and forth, and A oil inlets are respectively equipped with the both ends of oil cylinder
Mouthful, B oil inlets, in one end where oil cylinder A oil inlets, the nut and sealing plate fitted together seals, and the piston can be from
One end where oil cylinder B oil inlets is stretched out；Dash forward it is characterized in that, being equipped with one end where oil cylinder B oil inlets into oil cylinder
The step gone out, a supporting are set between oil cylinder and piston, and the protrusion coordinated with step is equipped with splicing sleeve.
2. a kind of hydraulic jack for prestressed stretch-draw according to claim 1, it is characterised in that the step is dashed forward
Go out oil cylinder inner surface 3-10mm.
3. a kind of hydraulic jack for prestressed stretch-draw according to claim 1, it is characterised in that on splicing sleeve
Wear-resistant guiding trough of belt, seal groove and dust-proof ring recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446348.9U CN207313015U (en) | 2017-11-02 | 2017-11-02 | A kind of hydraulic jack for prestressed stretch-draw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446348.9U CN207313015U (en) | 2017-11-02 | 2017-11-02 | A kind of hydraulic jack for prestressed stretch-draw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207313015U true CN207313015U (en) | 2018-05-04 |
Family
ID=62380390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721446348.9U Expired - Fee Related CN207313015U (en) | 2017-11-02 | 2017-11-02 | A kind of hydraulic jack for prestressed stretch-draw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207313015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774578A (en) * | 2021-01-05 | 2021-05-11 | 郑州磨料磨具磨削研究所有限公司 | Forging type cubic hydraulic press |
-
2017
- 2017-11-02 CN CN201721446348.9U patent/CN207313015U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112774578A (en) * | 2021-01-05 | 2021-05-11 | 郑州磨料磨具磨削研究所有限公司 | Forging type cubic hydraulic press |
| CN112774578B (en) * | 2021-01-05 | 2022-09-16 | 郑州磨料磨具磨削研究所有限公司 | Forging type cubic hydraulic press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20191102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |