CN201433955Y - Hydraulic oil cylinder - Google Patents
Hydraulic oil cylinder Download PDFInfo
- Publication number
- CN201433955Y CN201433955Y CN2009201563906U CN200920156390U CN201433955Y CN 201433955 Y CN201433955 Y CN 201433955Y CN 2009201563906 U CN2009201563906 U CN 2009201563906U CN 200920156390 U CN200920156390 U CN 200920156390U CN 201433955 Y CN201433955 Y CN 201433955Y
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- China
- Prior art keywords
- pressure transducer
- piston
- cylinder body
- hydraulic jack
- hole
- 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
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Abstract
The utility model discloses a hydraulic oil cylinder comprising a cylinder body, a piston and a driving device, wherein the piston is positioned inside the cylinder body; the driving device is connected with the piston and drives the piston to do reciprocating motion in the cylinder body, wherein the hydraulic oil cylinder also comprises a first pressure sensor, a second pressure sensor and a control device; the first pressure sensor is communicated with a reversing position of the piston in the cylinder body; the second pressure sensor is communicated with a position between the reversing position in the cylinder body and a port of the cylinder body; the control device are respectively and electrically connected with the first pressure sensor and the second pressure sensor; and the control device is electrically connected with the driving device. The hydraulic oil cylinder can simply, conveniently and accurately control the reversing of the piston.
Description
Technical field
The utility model relates to a kind of hydraulic jack, more particularly, relates to a kind of hydraulic jack that can accurately control the commutation of the piston of hydraulic jack.
Background technique
Hydraulic jack is the executive component in the hydraulic system, the pressure of liquid can be able to be converted to mechanical energy, to realize straight reciprocating motion.Hydraulic jack all is widely used in various engineerings field.For example, in fluid pressure drive device, can come driven plunger to move reciprocatingly by the pressure of hydraulic oil in the control hydraulic jack, and then externally apply driving force by piston again.
Because the motion of piston in hydraulic jack is the to-and-fro motion of straight line, thereby the movement travel of piston in hydraulic jack is restricted.When piston moves to the stroke end in hydraulic jack (when the piston arrives commutation position), then piston needs the conversion direction motion, carries out reversing motion.
Usually, realize by dual mode for control the commutation of piston in hydraulic jack.
First kind of mode is to utilize near switch.Specifically, to be installed in the position of hydraulic jack inner carrier stroke end near switch, when this position of piston arrives, near the arrival of switch meeting perception piston, thereby send turn signal to control gear, this control gear driven plunger again moves in opposite directions.Utilization need be processed bigger mounting hole near the mode of switch on the casing wall of hydraulic jack, thereby has improved manufacture difficulty, has increased manufacture cost.
Another kind of mode is to utilize full hydraulic system to realize the commutation of hydraulic jack inner carrier.But the shortcoming of this mode is system complex, and the hydraulic system maintenance cost is higher, and accurate inadequately to the control of the commutation of piston.
Therefore, need a kind of hydraulic jack that can realize easily that commutation is accurately controlled to piston.
The model utility content
The purpose of this utility model is to overcome the defective that existing hydraulic jack can not realize easily that commutation is accurately controlled to piston, and a kind of hydraulic jack that can commutate and accurately control piston easily is provided.
According to the utility model, a kind of hydraulic jack is provided, this hydraulic jack comprises cylinder body, piston and drive unit, described piston is positioned at cylinder body, described drive unit is connected with described piston and drives the to-and-fro motion in described cylinder body of described piston, wherein, described hydraulic jack also comprises first pressure transducer, second pressure transducer and control gear, described first pressure transducer communicates with the commutation position of piston described in the described cylinder body, and the position in described second pressure transducer and the described cylinder body between the port of described commutation position and described cylinder body communicates; Described control gear is electrically connected with described control gear respectively with described first pressure transducer and second pressure transducer, and described control gear and drive unit are electrically connected.
According to hydraulic jack provided by the utility model, owing to utilize two pressure transducers to detect the commutation position whether piston arrives piston, need bigger mounting hole be set on the cylinder body of hydraulic jack, reduce manufacture difficulty and saved manufacture cost.And, realizing electrical control by pressure transducer and control gear to drive unit, can control the commutation of piston more exactly.Therefore, hydraulic jack of the present utility model can be realized the hydraulic jack that commutation is accurately controlled to piston easily.
Description of drawings
Fig. 1 is the structural representation according to the hydraulic jack of a kind of mode of execution of the present utility model;
Fig. 2 is the structural representation according to the hydraulic jack of the another kind of mode of execution of the utility model.
Embodiment
Below with reference to accompanying drawing embodiment of the present utility model is described.
As depicted in figs. 1 and 2, the utility model provides a kind of hydraulic jack, this hydraulic jack comprises cylinder body 1, piston 2 and drive unit, described piston 2 is positioned at cylinder body 1, described drive unit is connected with described piston 2 and drives the to-and-fro motion in described cylinder body 1 of described piston 2, wherein, described hydraulic jack also comprises first pressure transducer 3, second pressure transducer 4 and the control gear, described first pressure transducer 3 communicates with the commutation position of piston 2 described in the described cylinder body 1, and the position in described second pressure transducer 4 and the described cylinder body 1 between the port of described commutation position and described cylinder body 1 communicates; Described first pressure transducer 3 and second pressure transducer 4 are electrically connected with described control gear respectively, and described control gear and drive unit are electrically connected.
Innovation part of the present utility model is to provide a kind of commutation that makes piston more convenient and technological scheme accurately, thereby, for the other technologies aspect little with the utility model relevance, as about the hydraulic oil of the sealing of hydraulic jack, use and which kind of drive unit driven plunger to-and-fro motion etc., do not do detailed description.Other aspects about hydraulic jack can be used in conjunction with technology commonly used in the prior art, those of ordinary skills are to about the prior art of hydraulic jack and be suitable for comparatively familiar, therefore, in this manual, emphatically to how utilizing first pressure transducer and second pressure transducer to realize the in addition detailed description of accurate control of piston commutation, and omit or simplify otherwise description.
Piston 2 is moving reciprocatingly in cylinder body 1 under the driving of drive unit, and when piston 2 was gone back the no show commutation position, first pressure transducer 3 and second pressure transducer, 4 detected force value equated; And when piston 2 arrives commutation position, because piston 2 has stoped being communicated with of hydraulic oil and first pressure transducer 3, thereby first pressure transducer 3 can not experience the pressure of hydraulic oil, and second pressure transducer 4 that communicates with position between the port of described commutation position and described cylinder body 1 in the described cylinder body 1 still is subjected to the effect of hydraulic oil, thereby makes first pressure transducer 3 and second pressure transducer, 4 detected force value can produce bigger difference.
Described first pressure transducer 3 and second pressure transducer 4 are electrically connected with described control gear respectively, thereby all send detected force value to control gear, control gear compares the force value that obtains, if determine that piston 2 has arrived commutation position, then the control gear that is electrically connected with drive unit can send command signal to drive unit, makes 2 reversing motions of drive unit driven plunger.
Pressure transducer can be selected the sensor of the various test fluid pressure used always, as long as be applicable to the concrete workplace of hydraulic jack.Control gear can be selected controller commonly used in the prior art, as single-chip microcomputer or PLC etc.Can in control gear, work out preset program, thereby arrive commutation position when making control gear judge piston 2, thereby send the commutation command signal to drive unit according to the pressure signal that first pressure transducer and second pressure transducer send.
For example, described cylinder body 1 comprises first hole 6 and second hole 7, and this first hole 6 and second hole 7 are positioned on the wall of described cylinder body 1, and described first pressure transducer 3 communicates with described first hole 6, and described second pressure transducer 4 communicates with described second hole 7.
As shown in Figure 1, preferably, described first pressure transducer 3 is arranged in described first hole 6, and described second pressure transducer 4 is arranged in described second hole 7.This mode is installed comparatively convenient.
As shown in Figure 2, preferably, described hydraulic jack also comprises first path 8 and alternate path 9, and described first pressure transducer 3 is communicated with described first hole 6 by described first path 8, and described second pressure transducer 4 is communicated with described second hole 7 by described alternate path 9.
In this mounting type, first pressure transducer 3 is communicated with first hole 6 by first path 8, second pressure transducer 4 is communicated with second hole 7 by alternate path 9, thereby first pressure transducer 3 and second pressure transducer 4 can be arranged on the outside of cylinder body 1, so that first pressure transducer 3 and second pressure transducer 4 are overhauled.
Preferably, described control gear comprises the comparison module and the analysis module of electrical connection, described comparison module is electrically connected with described first pressure transducer 3 and second pressure transducer 4 respectively, be used for accepting and more described first pressure transducer 3 and second pressure transducer, 4 detected force value, described analysis module is electrically connected with described drive unit, is used for transmitting control signal to described drive unit according to the comparative result of described comparison module.
For example, when the comparative result of comparison module is that first pressure transducer, 3 detected force value are the 1/4-1/2 of second pressure transducer, 4 detected force value, then analysis module can be judged piston 2 and arrive commutation position, thereby this analysis module sends control signal to drive unit, makes 2 reversing motions of drive unit driven plunger.
More than described embodiment of the present utility model, but protection domain of the present utility model is not limited to this, but limits by claim of the present utility model.
Claims (5)
1. hydraulic jack, this hydraulic jack comprises cylinder body (1), piston (2) and drive unit, described piston (2) is positioned at cylinder body (1), and described drive unit is connected with described piston (2) and drives described piston (2) to-and-fro motion in described cylinder body (1), it is characterized in that:
Described hydraulic jack also comprises first pressure transducer (3), second pressure transducer (4) and control gear, described first pressure transducer (3) communicates with the commutation position of piston (2) described in the described cylinder body (1), and the position in described second pressure transducer (4) and the described cylinder body (1) between the port of described commutation position and described cylinder body (1) communicates; Described first pressure transducer (3) and second pressure transducer (4) are electrically connected with described control gear respectively, and described control gear and drive unit are electrically connected.
2. hydraulic jack according to claim 1, it is characterized in that, described cylinder body (1) comprises first hole (6) and second hole (7), this first hole (6) and second hole (7) are positioned on the wall of described cylinder body (1), described first pressure transducer (3) communicates with described first hole (6), and described second pressure transducer (4) communicates with described second hole (7).
3. hydraulic jack according to claim 2 is characterized in that, described first pressure transducer (3) is arranged in described first hole (6), and described second pressure transducer (4) is arranged in described second hole (7).
4. hydraulic jack according to claim 2, it is characterized in that, described hydraulic jack also comprises first path (8) and alternate path (9), described first pressure transducer (3) is communicated with described first hole (6) by described first path (8), and described second pressure transducer (4) is communicated with described second hole (7) by described alternate path (9).
5. according to any described hydraulic jack among the claim 1-4, it is characterized in that, described control gear comprises the comparison module and the analysis module of electrical connection, described comparison module is electrically connected with described first pressure transducer (3) and second pressure transducer (4) respectively, be used for accepting and more described first pressure transducer (3) and the detected force value of second pressure transducer (4), described analysis module is electrically connected with described drive unit, is used for transmitting control signal to described drive unit according to the comparative result of described comparison module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201563906U CN201433955Y (en) | 2009-06-14 | 2009-06-14 | Hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201563906U CN201433955Y (en) | 2009-06-14 | 2009-06-14 | Hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433955Y true CN201433955Y (en) | 2010-03-31 |
Family
ID=42052762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201563906U Expired - Fee Related CN201433955Y (en) | 2009-06-14 | 2009-06-14 | Hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201433955Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883581A (en) * | 2014-03-25 | 2014-06-25 | 庄筱凤 | Integrated self-locking intelligent informationized hydraulic cylinder device |
| CN107339284A (en) * | 2017-08-21 | 2017-11-10 | 福建龙马环卫装备股份有限公司 | A kind of oil cylinder decision-making system and method in place |
| CN109869372A (en) * | 2019-03-20 | 2019-06-11 | 江苏恒立液压股份有限公司 | Multi-stage oil cylinder |
-
2009
- 2009-06-14 CN CN2009201563906U patent/CN201433955Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883581A (en) * | 2014-03-25 | 2014-06-25 | 庄筱凤 | Integrated self-locking intelligent informationized hydraulic cylinder device |
| CN107339284A (en) * | 2017-08-21 | 2017-11-10 | 福建龙马环卫装备股份有限公司 | A kind of oil cylinder decision-making system and method in place |
| CN109869372A (en) * | 2019-03-20 | 2019-06-11 | 江苏恒立液压股份有限公司 | Multi-stage oil cylinder |
| CN109869372B (en) * | 2019-03-20 | 2024-03-29 | 江苏恒立液压股份有限公司 | Multi-stage oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20100614 |