CN204127025U - A kind of novel hydraulic piston assembly - Google Patents
A kind of novel hydraulic piston assembly Download PDFInfo
- Publication number
- CN204127025U CN204127025U CN201420568323.6U CN201420568323U CN204127025U CN 204127025 U CN204127025 U CN 204127025U CN 201420568323 U CN201420568323 U CN 201420568323U CN 204127025 U CN204127025 U CN 204127025U
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- stroke dog
- annular groove
- hydraulic
- 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
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a kind of novel hydraulic piston assembly, comprise piston rod, piston rod is provided with the piston be slidably matched with inner chamber of cylinder block, described piston rod is connected by screw fastening with between piston, and at screw place, cushion being installed, described piston rod is ladder-type, and at ladder, place is provided with stroke dog, in the inner chamber of described stroke dog, be provided with Returnning spring, one end contact of described Returnning spring is on piston.When piston rod movement is to end of travel, stroke dog is spacing by the bottom side end face of oil hydraulic cylinder, thus stop motion, at this moment throttle chink is formed between piston and stroke dog, chamber pressure between piston and stroke dog increases, resist mutually with the hydraulic coupling acting on piston left end with the inertial force of piston, thus reach the object of buffering; By offering annular groove, being extruded stressed hydraulic oil and entering in annular groove, and then slowing down the movement velocity of piston rod and piston, reduce piston to the impact force of end cap.
Description
Technical field
The utility model relates to oil hydraulic cylinder technical field, particularly relates to a kind of novel hydraulic piston assembly.
Background technique
The normal mechanism using Driven by Hydraulic Cylinder to have certain mass in hydraulic system, when hydraulic cylinder is to having larger kinetic energy during stroke end, as do not done process of slowing down, under the effect of inertial force and hydraulic coupling, to mechanical collision be there is in hydraulic cylinder piston and cylinder cap, produce impact, noise, have destructiveness, for relaxing and preventing this harm from occurring, damping device need established in cylinder body.Traditional damping device is in the segment distance before piston arrives stroke terminal, manage in an oil-discharging cavity that part or all seals up, discharged by throttling pore, thus make the fluid be closed produce suitable compensator or trimmer pressure to act on the oil extraction side of piston, resist mutually with the inertial force of piston, thus reach the object of retarding braking.But there is following deficiency: because damping device acts on end, when cushion stroke is larger, the quality of oil hydraulic cylinder increases; When oil hydraulic cylinder high-speed motion, in oil-discharging cavity, peak value compensator or trimmer pressure is very large, causes cylinder barrel wall thickness to increase, and the quality of oil hydraulic cylinder increases.Simultaneously not only complex structure, manufacture cost are high for the oil hydraulic cylinder of existing band damping device, but also need higher assembly precision.
Summary of the invention
The utility model is in order to overcome deficiency of the prior art, provide a kind of novel hydraulic piston assembly, this apparatus structure is simple, and the speed of oil hydraulic cylinder can be made to reduce reposefully, effectively reduce the impact force that cylinder barrel bears, thus obtain good cushioning effect.
The utility model is achieved through the following technical solutions:
A kind of novel hydraulic piston assembly, comprise piston rod, piston rod is provided with the piston be slidably matched with inner chamber of cylinder block, described piston rod is connected by screw fastening with between piston, and at screw place, cushion being installed, described piston rod is ladder-type, and at ladder, place is provided with stroke dog, in the inner chamber of described stroke dog, be provided with Returnning spring, one end contact of described Returnning spring is on piston.
As optimal technical scheme of the present utility model, the external cylindrical surface of described piston rod offers annular groove.
As optimal technical scheme of the present utility model, the cross section of described annular groove is rectangle.
As optimal technical scheme of the present utility model, the external cylindrical surface of described piston is provided with groove, is provided with seal ring in a groove.
Compared with prior art, the beneficial effects of the utility model are: the utility model is when hydraulic cylinder works, when piston rod movement is to end of travel, stroke dog is spacing by the bottom side end face of oil hydraulic cylinder, thus stop motion, and piston, piston rod, screw move forward under the effect of inertial force and hydraulic coupling, at this moment throttle chink is formed between piston and stroke dog, chamber pressure between piston and stroke dog increases, resist mutually with the hydraulic coupling acting on piston left end with the inertial force of piston, thus reach the object of buffering; By offering annular groove, being extruded stressed hydraulic oil and entering in annular groove, and then slowing down the movement velocity of piston rod and piston, reduce piston to the impact force of end cap.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-cushion; 2-piston rod; 3-piston; 4-stroke dog; 5-Returnning spring; 6-annular groove; 7-screw; 8-groove.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of novel hydraulic piston assembly, comprise piston rod 2, piston rod 2 is provided with the piston 3 be slidably matched with inner chamber of cylinder block, be fastenedly connected by screw 7 between described piston rod 2 and piston 3, and at screw 7 place, cushion 1 being installed, described piston rod 2 is ladder-type, is provided with stroke dog 4 at ladder place, in the inner chamber of described stroke dog 4, be provided with Returnning spring 5, one end contact of described Returnning spring 5 is on piston 3; The external cylindrical surface of described piston rod 2 offers annular groove 6, and the cross section of described annular groove 6 is rectangle; The external cylindrical surface of described piston 3 is provided with groove 8, in groove 8, be provided with seal ring.
When piston rod movement is to end of travel, stroke dog is spacing by the bottom side end face of oil hydraulic cylinder, thus stop motion, and piston, piston rod, screw move forward under the effect of inertial force and hydraulic coupling, at this moment throttle chink is formed between piston and stroke dog, chamber pressure between piston and stroke dog increases, and resists mutually, thus reach the object of buffering with the inertial force of piston with the hydraulic coupling acting on piston left end; By offering annular groove, being extruded stressed hydraulic oil and entering in annular groove, and then slowing down the movement velocity of piston rod and piston, reduce piston to the impact force of end cap.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a novel hydraulic piston assembly, comprise piston rod (2), piston rod (2) is provided with the piston (3) be slidably matched with inner chamber of cylinder block, it is characterized in that: be fastenedly connected by screw (7) between described piston rod (2) and piston (3), and at screw (7) place, cushion (1) is installed, described piston rod (2) is ladder-type, stroke dog (4) is provided with at ladder place, in the inner chamber of described stroke dog (4), be provided with Returnning spring (5), one end contact of described Returnning spring (5) is on piston (3).
2. a kind of novel hydraulic piston assembly according to claim 1, is characterized in that: the external cylindrical surface of described piston rod (2) offers annular groove (6).
3. a kind of novel hydraulic piston assembly according to claim 2, is characterized in that: the cross section of described annular groove (6) is rectangle.
4. a kind of novel hydraulic piston assembly according to claim 2, is characterized in that: the external cylindrical surface of described piston (3) is provided with groove (8), in groove (8), be provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568323.6U CN204127025U (en) | 2014-09-30 | 2014-09-30 | A kind of novel hydraulic piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568323.6U CN204127025U (en) | 2014-09-30 | 2014-09-30 | A kind of novel hydraulic piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127025U true CN204127025U (en) | 2015-01-28 |
Family
ID=52383384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420568323.6U Expired - Fee Related CN204127025U (en) | 2014-09-30 | 2014-09-30 | A kind of novel hydraulic piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913872A (en) * | 2015-04-14 | 2015-09-16 | 西安中测计量技术有限公司 | Piston system preventing piston rod from fracture |
-
2014
- 2014-09-30 CN CN201420568323.6U patent/CN204127025U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913872A (en) * | 2015-04-14 | 2015-09-16 | 西安中测计量技术有限公司 | Piston system preventing piston rod from fracture |
| CN104913872B (en) * | 2015-04-14 | 2018-04-24 | 西安中测计量技术有限公司 | A kind of piston system for preventing rod fracture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015128142A3 (en) | Vibration damper having an end stop | |
| CN104121251A (en) | Buffering device for hydraulic cylinder | |
| CN203796839U (en) | Automatic reset hydraulic buffer device | |
| CN204127025U (en) | A kind of novel hydraulic piston assembly | |
| CN102536957A (en) | Pneumatic/hydraulic cylinder with buffering mechanism | |
| CN204729389U (en) | A kind of oil hydraulic cylinder with pressure-reducing cushioning | |
| CN203962828U (en) | A kind of vibration damper | |
| CN204436947U (en) | A kind of novel hydraulic cylinder | |
| CN105782322A (en) | High-stability piston structure for mechanical equipment damper | |
| CN104074836A (en) | High speed hydraulic cylinder buffer mechanism | |
| CN201391511Y (en) | Hydraulic cylinder cushioning device | |
| CN202756342U (en) | Long-stroke quick hydraulic cylinder buffer device | |
| CN103851026A (en) | Porous buffer of hydraulic cylinder | |
| CN203655783U (en) | Hydraulic cylinder with throttling and buffering mechanism | |
| CN203743118U (en) | Hydraulic cylinder with buffering structure | |
| CN203257793U (en) | Damping device for hydraulic cylinder | |
| CN203082107U (en) | Hydraulic damping device | |
| CN106151167A (en) | Hydraulic Double bumper post plug cylinder | |
| CN202441669U (en) | Pneumatic/hydraulic cylinder with buffering mechanism | |
| CN205350185U (en) | Mechanical equipment is high stability piston structure for bumper shock absorber | |
| CN203655784U (en) | Hydraulic cylinder with buffering mechanism | |
| CN203939810U (en) | A kind of oil hydraulic cylinder of built-in variable throttling damping device | |
| CN208885682U (en) | A kind of double rod type hydraulic cylinder | |
| CN203308822U (en) | Hydraulic cylinder | |
| CN103851022A (en) | Hydraulic buffer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20160930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |