CN204099335U - A kind of mechanical type three hydraulic jacks - Google Patents
A kind of mechanical type three hydraulic jacks Download PDFInfo
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- CN204099335U CN204099335U CN201420582106.2U CN201420582106U CN204099335U CN 204099335 U CN204099335 U CN 204099335U CN 201420582106 U CN201420582106 U CN 201420582106U CN 204099335 U CN204099335 U CN 204099335U
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Abstract
The utility model discloses a kind of mechanical type three hydraulic jacks, comprise cylinder head, cylinder bottom, cylinder barrel, piston, piston rod and stop collar, cylinder head and cylinder bottom are separately positioned on cylinder barrel two ends, cylinder head and cylinder bottom offer the first hydraulic fluid port and the second hydraulic fluid port respectively, piston is arranged in cylinder barrel, cylinder barrel offers the 3rd hydraulic fluid port, and piston comprises first piston and the second piston, first piston and the second piston sleeve are established on the piston rod, and the 3rd hydraulic fluid port and stop collar are between first piston and the second piston.Mechanical type of the present utility model three hydraulic jacks are by arranging the 3rd hydraulic fluid port, add the change in displacement of piston rod, the work requirements of different stroke can be realized by mechanical limit point and fuel system, saved cost of production greatly, make production benefit.
Description
Technical field
The utility model relates to engineering machinery field, particularly relates to a kind of mechanical type three hydraulic jacks.
Background technique
Traditional hydraulic jack comprises cylinder head, cylinder bottom, cylinder barrel, piston and piston rod, by arranging hydraulic fluid port at cylinder head and cylinder bottom, realizes the change in displacement of piston rod.
Because traditional hydraulic jack only has two hydraulic fluid ports, the limit position of its piston rod also only has two, and it cannot meet the demand of actual production gradually.
In order to obtain the 3rd limit position, usually adopting the mode of outer displacement sensor, by the displacement of sensor senses piston rod, then making piston rod in the position stop motion of a certain needs by the mode of hydraulic control system fuel cut-off and oil return.When being located by sensor senses, when resetting is to same position, easily produce deviation, positioning precision is not good.
Model utility content
In order to overcome the shortcoming and defect existed in prior art, the utility model provides that a kind of structure is simple, mechanical type three hydraulic jacks of accurate positioning.
The utility model is achieved through the following technical solutions: a kind of mechanical type three hydraulic jacks, and comprise cylinder head, cylinder bottom, cylinder barrel, piston and piston rod, described cylinder head and cylinder bottom are separately positioned on cylinder barrel two ends; Described cylinder head and cylinder bottom offer the first hydraulic fluid port and the second hydraulic fluid port respectively, and described piston is arranged in cylinder barrel.Described cylinder barrel offers the 3rd hydraulic fluid port, described piston comprises first piston and the second piston, and described first piston and the second piston sleeve are located at piston rod periphery, and described 3rd hydraulic fluid port is between first piston and the second piston.
Compared to prior art, mechanical type of the present utility model three hydraulic jacks, do not need to use the controller such as valve class or displacement transducer to realize the function of the displacement size of regulator solution cylinder pressure, but directly by arranging the 3rd hydraulic fluid port, add the change in displacement of piston rod, realize the work requirements of different stroke, saved cost of production greatly, make production benefit.
Further, described mechanical type three hydraulic jacks also comprise stop collar, and described stop collar is between first piston and the second piston.Described stop collar is used for carrying out spacing to the movement of first piston.
Further, described first piston is slidably located in piston rod periphery, described second piston and piston rod affixed near one end of cylinder bottom.
Further, described piston rod is provided with first shaft shoulder, and described stop collar is held out against on described first shaft shoulder by the second piston.First shaft shoulder be spacing pack into row spacing.
Further, described piston rod is also provided with second shaft shoulder, and described second piston is located by second shaft shoulder and fixed with piston rod.Arranging second shaft shoulder can be better the second piston location.
Further, described second piston and piston rod are threaded connection near one end of cylinder bottom.
In order to understand better and implement, describe the utility model in detail below in conjunction with accompanying drawing.
Accompanying drawing explanation
Piston position schematic diagram when Fig. 1 is the first hydraulic fluid port oil-feed of mechanical type described in the utility model three hydraulic jacks.
Piston position schematic diagram when Fig. 2 is the second hydraulic fluid port oil-feed of mechanical type described in the utility model three hydraulic jacks.
Piston position schematic diagram when Fig. 3 is the 3rd hydraulic fluid port oil-feed of mechanical type described in the utility model three hydraulic jacks.
Embodiment
Refer to Fig. 1, piston position schematic diagram when Fig. 1 is the first hydraulic fluid port oil-feed of mechanical type described in the utility model three hydraulic jacks.
Mechanical type of the present utility model three hydraulic jacks, comprise cylinder head 1, cylinder bottom 2, cylinder barrel 3, piston 4, piston rod 5 and stop collar 6.Cylinder head 1 and cylinder bottom 2 are separately positioned on cylinder barrel 3 two ends, and cylinder head 1 and cylinder bottom 2 offer the first hydraulic fluid port 11 and the second hydraulic fluid port 21 respectively, and piston 4 is arranged in cylinder barrel 3, and it is peripheral to be sheathed on piston rod 5.Cylinder barrel 3 offers the 3rd hydraulic fluid port 31, piston 4 comprises first piston 41 and the second piston 42, and first piston 41 and the second piston 42 are set on piston rod 5, and the 3rd hydraulic fluid port 31 and stop collar 6 are between first piston 41 and the second piston 42.
Particularly, piston rod 5 is provided with first shaft shoulder 51 and second shaft shoulder 52, first shaft shoulder, 51 pairs of stop collars 6 carry out spacing, and stop collar 6 is held out against on described first shaft shoulder 51 by the second piston 42.Meanwhile, the movement of stop collar 6 pairs of first pistons 41 is carried out spacing; Described first piston 41 is slidably arranged on piston rod 5, and the second piston 42 is threaded connection and is fixed on piston rod 5 near one end of cylinder bottom and is located by second shaft shoulder 52.
The working procedure of described mechanical type three hydraulic jacks is described below in conjunction with accompanying drawing.
As shown in Figure 1, when the first hydraulic fluid port 11 oil-feed, first piston 41 moves under the promotion of hydraulic oil, and first piston 41 promotes stop collar 6 and moves, thus drives piston rod 5 to move to the first extreme position, piston rod 5 stop motion.
Refer to Fig. 2, piston position schematic diagram when it is the second hydraulic fluid port oil-feed of mechanical type three hydraulic jacks.When the second hydraulic fluid port 21 oil-feed, hydraulic oil promotes the second piston 42 and piston rod 5, under the effect of hydraulic fluid pressure, second piston 42 and piston rod 5 move to one end of cylinder head 1, stop collar 6 and first piston 41 are close to, and promote first piston 41 and move, the sidewall in its final and cylindrical shell 3 is close to, and now piston rod 5 moves to the second extreme position and stop motion.
Refer to Fig. 3, piston position schematic diagram when it is the 3rd hydraulic fluid port oil-feed of mechanical type three hydraulic jacks.When the 3rd hydraulic fluid port 31 oil-feed, hydraulic oil promotes stop collar 6 and the second piston 42 and drives piston rod 5 to move to the direction of cylinder bottom 2, finally, at the bottom of the second piston 42 retaining jar 2 inwall, now piston rod 5 moves to its 3rd extreme position and stop motion.
Mechanical type of the present utility model three hydraulic jacks, by arranging the 3rd hydraulic fluid port, making oil cylinder have three limit positions, adding the change in displacement of piston rod.In addition, the work requirements of different stroke can be realized by mechanical limit point and fuel system, not need to arrange external sensor, saved cost of production greatly, make production benefit.Meanwhile, compared to outer displacement sensor perceptual positioning, mechanical type is spacing more accurate, position problem devious when there is not resetting.
Further, the size of the position of the 3rd hydraulic fluid port 31 described in the present embodiment, first piston 41, second piston 42 and stop collar 6 can design according to real needs, and the 3rd displaced position of piston rod 5 is just corresponding to be determined.
The utility model is not limited to above-mentioned mode of execution, if do not depart from spirit and scope of the present utility model to various change of the present utility model or distortion, if these are changed and distortion belongs within claim of the present utility model and equivalent technologies scope, then the utility model is also intended to comprise these changes and distortion.
Claims (6)
1. mechanical type three hydraulic jacks, comprise cylinder head, cylinder bottom, cylinder barrel, piston and piston rod, described cylinder head and cylinder bottom are separately positioned on cylinder barrel two ends, and described cylinder head and cylinder bottom offer the first hydraulic fluid port and the second hydraulic fluid port respectively, and described piston is arranged in cylinder barrel; It is characterized in that: described cylinder barrel offers the 3rd hydraulic fluid port, described piston comprises first piston and the second piston, and described first piston and the second piston sleeve are located at piston rod periphery, and described 3rd hydraulic fluid port is between first piston and the second piston.
2. mechanical type according to claim 1 three hydraulic jacks, it is characterized in that: also comprise stop collar, described stop collar is between first piston and the second piston.
3. mechanical type according to claim 2 three hydraulic jacks, is characterized in that: described first piston is slidably located in piston rod periphery, described second piston and piston rod affixed near one end of cylinder bottom.
4. mechanical type according to claim 3 three hydraulic jacks, is characterized in that: described piston rod is provided with first shaft shoulder, and described stop collar is held out against on described first shaft shoulder by the second piston.
5. mechanical type according to claim 4 three hydraulic jacks, is characterized in that: described piston rod is also provided with second shaft shoulder, and described second piston is located by second shaft shoulder and fixed with piston rod.
6. mechanical type according to claim 5 three hydraulic jacks, is characterized in that: described second piston and piston rod are threaded connection near one end of cylinder bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420582106.2U CN204099335U (en) | 2014-10-09 | 2014-10-09 | A kind of mechanical type three hydraulic jacks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420582106.2U CN204099335U (en) | 2014-10-09 | 2014-10-09 | A kind of mechanical type three hydraulic jacks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099335U true CN204099335U (en) | 2015-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420582106.2U Active CN204099335U (en) | 2014-10-09 | 2014-10-09 | A kind of mechanical type three hydraulic jacks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204099335U (en) |
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2014
- 2014-10-09 CN CN201420582106.2U patent/CN204099335U/en active Active
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