CN110345128A - Rubbish van lifts hydraulic cylinder buffer structure - Google Patents
Rubbish van lifts hydraulic cylinder buffer structure Download PDFInfo
- Publication number
- CN110345128A CN110345128A CN201910734876.1A CN201910734876A CN110345128A CN 110345128 A CN110345128 A CN 110345128A CN 201910734876 A CN201910734876 A CN 201910734876A CN 110345128 A CN110345128 A CN 110345128A
- Authority
- CN
- China
- Prior art keywords
- piston
- damper piston
- cylinder
- damper
- groove
- 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.)
- Granted
Links
- 239000000872 buffer Substances 0.000 title claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 15
- 238000011176 pooling Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 230000003139 buffering effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/224—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston which closes off fluid outlets in the cylinder bore by its own movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/227—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having an auxiliary cushioning piston within the main piston or the cylinder end face
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of rubbish vans to lift hydraulic cylinder buffer structure, belongs to hydraulic machinery technical field.The present invention has additional damper piston in cylinder body, the groove being twist distributed is provided on the periphery of damper piston, and axis direction along groove, the cross-sectional area of groove is gradual design, pass through the variation of the relative position of the spiral grooves and hydraulic fluid port of damper piston, it can realize the adjusting of oil liquid uninterrupted, automatically to reach pooling feature.Damper piston positioned at this side of rodless cavity is worked as a buffer in cylinder efficient startup stage, and the damper piston positioned at this side of rod chamber is worked as a buffer in cylinder efficient ending phase.The buffer structure of oil cylinder is simple in the present invention, it is easy to process, it is at low cost, it can be achieved with the pooling feature of oil cylinder in the case where not needing and adding buffer unit outside, the different desired functions to buffer speed speed, and stable and reliable working performance can be realized according to the difference of machined parameters simultaneously.
Description
Technical field
The present invention relates to a kind of buffer structures of rubbish van lifting hydraulic cylinder, belong to hydraulic machinery technical field.
Background technique
Currently, it is by cylinder barrel, cylinder bottom, hydraulic fluid port, piston, piston rod, guide sleeve etc. that well-known hydraulic cylinder, which mainly constructs,
Composition.Piston will be separated into two oil pockets of rod chamber and rodless cavity in cylinder body, push piston to realize piston rod by oil liquid
It moves back and forth.Rubbish van lifting hydraulic cylinder is due to the requirement of job specification, i.e. the starting rank in lifting dustbin at present
Section and ending phase require steadily slowly to cause rubbish to be shed to avoid impact, and use the oil cylinder for having pooling feature.It is real at present
The method of existing pooling feature is mainly additional buffer unit, and the most commonly used is flow control valve is installed additional, principle is to pass through flow
Control valve realizes the pooling feature of oil cylinder to adjust the size of oil liquid flow, although be able to satisfy the pooling feature of oil cylinder,
Due to being add-on device, make that cylinder structure is complicated, too fat to move, occupied space, while expensive, is installing and using and economy side
Burden all is brought to user in face.
Summary of the invention
The technical problems to be solved by the present invention are: a kind of rubbish van lifting hydraulic cylinder buffer structure is provided, with
Overcome current buffer cylinder structure complexity, expensive drawback.
The technical solution adopted by the present invention to solve the technical problems is: rubbish van lifts hydraulic cylinder buffering knot
Structure, including cylinder bottom, cylinder body, guide sleeve, piston rod and piston, cylinder bottom are fixedly connected on one end of cylinder body, guide sleeve fixing assembling in cylinder
The other end of body, after there is pilot hole compatible with piston rod, one end of piston rod to pass through the pilot hole of guide sleeve at guide sleeve middle part
In cylinder body, piston is assemblied in cylinder body, and is located at this intracorporal one end of cylinder with piston rod and is fixedly connected, and piston divides cylinder body
It is divided into rod chamber and rodless cavity, outer wall of cylinder block is provided with hydraulic fluid port A for being connected to rodless cavity and the hydraulic fluid port for being connected to rod chamber
B, the side of piston are provided with damper piston or both and are provided with damper piston, and damper piston is fixedly installed on piston rod
On, the periphery of damper piston is in contact with inboard wall of cylinder block, and the ditch being twist distributed is provided on the periphery of damper piston
Slot, axis direction along groove, the cross-sectional area of groove have the trend being gradually increased, and damper piston is close to one end of piston
For this lesser one end of cross-sectional area of groove.
Further, the groove bottom end contour line on damper piston is distributed in trochoid spiral shape.
Further, the two sides of piston are provided with damper piston, the damper piston close to this side of cylinder bottom is buffering
Piston A, the damper piston close to this side of guide sleeve are damper piston B；
Groove and hydraulic fluid port A when piston rod is moved to the position that damper piston A is in contact with cylinder bottom, on damper piston A
Connection, and be connected directly with hydraulic fluid port A be groove the lesser one end of cross-sectional area；
Groove and hydraulic fluid port B when piston rod is moved to the position that damper piston B is in contact with guide sleeve, on damper piston B
Connection, and be connected directly with hydraulic fluid port B be groove the lesser one end of cross-sectional area.
Further, this one end of piston rod connection piston is provided with positioning table terrace, the end of piston rod is connected with
Locking nut；Piston and damper piston all have the hole passed through for piston rod, are consolidated piston and damper piston by locking nut
Dingan County is mounted between positioning table terrace and locking nut.
Further, being provided with sealing in piston between the inner hole of piston and the outer wall of piston rod.
Further, being provided with piston bushing between the inner hole and piston rod outer wall of damper piston.
Further, damper piston includes that cylinder and the connecting bottom board positioned at cylinder one end, damper piston pass through
Connecting bottom board and piston rod fixing assembling.
Further, being provided with piston external seal between the periphery of piston and the inner wall of cylinder body；The periphery of piston
Guidance tape is additionally provided between the inner wall of cylinder body, guidance tape is set to piston external seal two sides.
Further, the material of damper piston uses continuous casting spheroidal graphite cast-iron.
Further, this one end that piston rod is located at outside cylinder body is connected with head component, head component and piston rod it
Between by being welded and fixed.
The beneficial effects of the present invention are: have additional damper piston in cylinder body, it is provided on the periphery of damper piston and is in
The cross-sectional area of the groove of spiral shape distribution, and axis direction along groove, groove is gradual design, passes through damper piston
Spiral grooves and hydraulic fluid port relative position variation, can realize the adjusting of oil liquid uninterrupted, automatically to reach pooling feature.
The damper piston can be selected in the side of piston setting or both setting according to actual needs.Positioned at this side of rodless cavity
Damper piston is worked as a buffer in cylinder efficient startup stage, and the damper piston positioned at this side of rod chamber terminates in cylinder efficient
Stage works as a buffer.The buffer structure of oil cylinder is simple in the present invention, easy to process, the case where not needing outer plus buffer unit
Under can be achieved with the pooling feature of oil cylinder, while the difference to buffer speed speed can be realized according to the difference of machined parameters
It is required that function, and stable and reliable working performance not only simplified structure but also economical and practical.
Detailed description of the invention
Fig. 1 is product structure general assembly schematic diagram of the invention；
Fig. 2 is the main view of damper piston in the present invention；
Fig. 3 is the C-C cross-sectional view of Fig. 2；
Fig. 4 is cylinder efficient startup stage buffer function schematic diagram；
Fig. 5 is cylinder efficient ending phase buffer function schematic diagram.
In the figure, it is marked as 1- cylinder bottom, 2- damper piston A, 3- cylinder body, 4- hydraulic fluid port A, 5- piston, 6- damper piston B, 7- are living
Stopper rod, 8- hydraulic fluid port B, 9- guide sleeve, 10- head component, the interior sealing of 11- guidance tape A, 12- piston, 13- piston external seal, 14- are led
To band B, 15.- piston bushing A, 16- piston bushing B, 17- locking nut.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
As shown in Figure 1 to Figure 3, the present invention includes cylinder bottom 1, cylinder body 3, guide sleeve 9, piston rod 7 and piston 5, and cylinder bottom 1 is fixed
Be connected to one end of cylinder body 3,9 fixing assembling of guide sleeve have in the middle part of the other end of cylinder body 3, guide sleeve 9 it is compatible with piston rod 7
Pilot hole, one end of piston rod 7 are set in cylinder body 3 after passing through the pilot hole of guide sleeve 9, and piston 5 is assemblied in cylinder body 3, and with work
This one end that stopper rod 7 is located in cylinder body 3 is fixedly connected, and cylinder body 3 is divided into rod chamber and rodless cavity by piston 5, and 3 outer wall of cylinder body is set
It is equipped with hydraulic fluid port A4 for being connected to rodless cavity and the hydraulic fluid port B8 for being connected to rod chamber, the side of piston 5 is provided with damper piston
Or both be provided with damper piston, damper piston is fixedly installed on piston rod 7, the periphery of damper piston and cylinder body 3
Inner wall is in contact, and the groove being twist distributed, axis direction along groove, groove are provided on the periphery of damper piston
Cross-sectional area there is the trend that is gradually increased, damper piston close to one end of piston 5 be the cross-sectional area of groove it is lesser this
One end.Damper piston can be selected in the side of piston 5 setting or both setting according to actual needs.Pass through damper piston
The variation of the relative position of spiral grooves and hydraulic fluid port can realize the adjusting of oil liquid uninterrupted, automatically to reach pooling feature.Position
Damper piston in this side of rodless cavity is worked as a buffer in cylinder efficient startup stage, and the buffering positioned at this side of rod chamber is living
Plug is worked as a buffer in cylinder efficient ending phase.For the damper piston of 5 two sides of piston according to buffer requirements, length can complete one
It causes, it can also be inconsistent.
It is suitable for rubbish van in the present embodiment and lifts hydraulic cylinder, due to the requirement of job specification, in rises for oil cylinder
Stage beginning and ending phase are required to pooling feature, thus are provided with damper piston in the two sides of piston 5, close to cylinder bottom
The damper piston of 1 this side is damper piston A2, the damper piston close to 9 this side of guide sleeve is damper piston B6.
To allow the groove on damper piston to give full play to buffer function, the corresponding relationship of groove and hydraulic fluid port is preferably pressed
As under type is implemented: the ditch when piston rod 7 is moved to the position that damper piston A2 is in contact with cylinder bottom 1, on damper piston A2
Slot is connected to hydraulic fluid port A2, and be connected directly with hydraulic fluid port A2 be groove the lesser one end of cross-sectional area；When piston rod 7 is mobile
When the position being in contact with guide sleeve 9 to damper piston B6, the groove on damper piston B6 is connected to hydraulic fluid port B8, and with hydraulic fluid port B8
Be connected directly be groove the lesser one end of cross-sectional area.
To make buffering course steadily reliable, the cross-sectional area size variation of groove should axis direction along groove answer
As far as possible uniformly.Groove bottom end contour line in the present invention on damper piston is distributed in trochoid spiral shape, not only can be met
The requirement of the cross-sectional area of groove variation uniform in size, while also facilitating the processing and fabricating of groove.Damper piston can be according to user
Demand, by the different set of the machined parameters to screw pitch, cone angle and trench cross section size, to meet to buffer speed speed
Different require.Such as: length is shortened, increases screw pitch, cone angle and trench cross section, throttle-flow variation is fast, therefore buffers speed
Degree is fast, the time is few；Conversely, buffer speed is slow, the time is long.
The course of work and cushioning principle in the embodiment of the present invention is as follows:
The job initiation stage of oil cylinder: as shown in figure 4, when pressure oil liquid enters 3 inside left of cylinder body by hydraulic fluid port A4, it is living
It fills in 5 components to start to move right under the action of oil pressure, due to the relative position of groove and oil inlet A4 on damper piston A2
Relationship, 3 inside left of cylinder body can only be entered by the lesser groove of cross-sectional area with smaller flow by most starting oil liquid, and 5 groups of piston
Part slowly starts, and during then, as 5 component of piston gradually moves right, damper piston A2 passes through oil inlet 4
The trench section area set constantly increases, and the flow that oil liquid enters inside cylinder body 3 gradually increases, thus the movement of 5 component of piston
Speed is gradually accelerated, and until damper piston A2 passes through the position oil inlet A4 completely, during later, pressure oil liquid enters cylinder body 3
Uninterrupted it is constant, 5 component uniform motion of piston.In oil cylinder start-up course, the groove on damper piston A2 is played certainly
The dynamic effect for adjusting oil liquid uninterrupted, realizes the function of cylinder buffer starting.
The work ending phase of oil cylinder: as shown in figure 5, its Principle of Process is just opposite with the job initiation stage of oil cylinder.
Cylinder body 3 is discharged during 5 component of piston moves right, through hydraulic fluid port B8 in the oil liquid of 3 inner right side of cylinder body.When oil cylinder is run
To ending phase, when damper piston B6 begins to pass through the hydraulic fluid port position B8, the uninterrupted that oil liquid is discharged starts by damper piston B6
On groove have adjusted, due to the relative positional relationship of damper piston B6 and hydraulic fluid port B8, most start oil liquid and pass through cross-sectional area
Biggish groove with larger flow by hydraulic fluid port B8 be discharged cylinder body 3, and then during, with 5 component of piston gradually to
It moves right, damper piston B6 is constantly reduced by the trench section area of the position hydraulic fluid port B8, and the flow of cylinder body 3 is discharged gradually in oil liquid
Reduce, so that the movement velocity of 5 component of piston slows down gradually, stops until damper piston B6 contacts guide sleeve 9.Whole process
In, the groove on damper piston B6 plays the role of automatically adjusting oil liquid uninterrupted, realizes the function of cylinder buffer stopping
Energy.
The configuration of the present invention is simple it can be seen from the above course of work, is convenient to process and mount, and is not necessarily to add-on device, cost
It is lower, it is able to achieve pooling feature in two stages that start and terminate of oil cylinder operation, and reliable and stable.The present invention can need
It wants to be widely applied on the oil cylinder of buffer requirements.
In addition, following preferred embodiment also can be used in the present invention:
To further facilitate process and assemble, this one end that piston rod 7 connects piston 5 is provided with positioning table terrace, piston rod 7
End be connected with locking nut 17；Piston 5 and damper piston all have the hole passed through for piston rod 7, pass through locking nut 17
Piston 5 and damper piston are fixedly mounted between positioning table terrace and locking nut 17；The inner hole and piston rod 7 of damper piston
Piston bushing is provided between outer wall.The internal diameter of piston bushing is adapted with 7 outer diameter of piston rod of corresponding position, piston bushing
Outer diameter is adapted with the diameter of bore of the damper piston of corresponding position；For same group of damper piston, different size is only needed to change
Piston bushing, that is, be applicable to the piston rod 7 of various outer diameter specification.In addition, the preferred structure of damper piston is, including cylinder
Body and connecting bottom board positioned at cylinder one end, damper piston pass through connecting bottom board and 7 fixing assembling of piston rod；Using the structure
When, piston bushing is assemblied between the centre bore of connecting bottom board and the outer wall of piston rod 7.For the leakproofness that piston 5 is effectively ensured
Can, sealing 12 in piston is provided between the inner hole of piston 5 and the outer wall of piston rod 7；The periphery of piston 5 is interior with cylinder body 3
Piston external seal 13 is provided between wall.To make the reciprocatory movement of piston 5 more reliable, the periphery and cylinder body 3 of piston 5
Inner wall between be additionally provided with guidance tape, guidance tape is set to 13 two sides of piston external seal.To make work more reliable, damper piston
Material use the continuous casting spheroidal graphite cast-iron of good, the stronger endurance life of wearability, numerically-controlled machine tool processing can be used in when specific processing.
In the specific implementation, this one end that piston rod 7 is located at outside cylinder body 3 is connected with head component 10, head component 10 with
Preferably by being welded and fixed between piston rod 7, processing and fabricating is convenient.
Claims (10)
1. rubbish van lift hydraulic cylinder buffer structure, including cylinder bottom (1), cylinder body (3), guide sleeve (9), piston rod (7) and
Piston (5), cylinder bottom (1) are fixedly connected on one end of cylinder body (3), guide sleeve (9) fixing assembling in the other end of cylinder body (3), guide sleeve
(9) middle part has with piston rod (7) compatible pilot hole, and one end of piston rod (7) is set to after the pilot hole of guide sleeve (9)
In cylinder body (3), piston (5) is assemblied in cylinder body (3), and is located at this one end in cylinder body (3) with piston rod (7) and is fixedly connected,
Cylinder body (3) is divided into rod chamber and rodless cavity by piston (5), and cylinder body (3) outer wall is provided with the hydraulic fluid port A for being connected to rodless cavity
(4) with the hydraulic fluid port B (8) for being connected to rod chamber, it is characterised in that: the side of piston (5) is provided with damper piston or both
It is provided with damper piston, damper piston is fixedly installed on piston rod (7), the periphery and cylinder body (3) inner wall of damper piston
It is in contact, the groove being twist distributed, axis direction along groove is provided on the periphery of damper piston, groove breaks
Face area has the trend that is gradually increased, damper piston close to one end of piston (5) be the cross-sectional area of groove it is lesser this
End.
2. rubbish van as described in claim 1 lifts hydraulic cylinder buffer structure, it is characterised in that: on damper piston
Groove bottom end contour line is distributed in trochoid spiral shape.
3. rubbish van as described in claim 1 lifts hydraulic cylinder buffer structure, it is characterised in that: the two sides of piston (5)
It is provided with damper piston, the damper piston close to cylinder bottom (1) this side is damper piston A (2), close to guide sleeve (9) this side
Damper piston be damper piston B (6)；
Groove when piston rod (7) is moved to the position that damper piston A (2) is in contact with cylinder bottom (1), on damper piston A (2)
Be connected to hydraulic fluid port A (2), and be connected directly with hydraulic fluid port A (2) be groove the lesser one end of cross-sectional area；
Groove when piston rod (7) is moved to the position that damper piston B (6) is in contact with guide sleeve (9), on damper piston B (6)
Be connected to hydraulic fluid port B (8), and be connected directly with hydraulic fluid port B (8) be groove the lesser one end of cross-sectional area.
4. rubbish van as described in claim 1 lifts hydraulic cylinder buffer structure, it is characterised in that: piston rod (7) is even
Take over a job this one end of plug (5) is provided with positioning table terrace, and the end of piston rod (7) is connected with locking nut (17)；Piston (5) and
Damper piston all has the hole passed through for piston rod (7), and piston (5) and damper piston are fixedly mounted by locking nut (17)
Between positioning table terrace and locking nut (17).
5. rubbish van as claimed in claim 4 lifts hydraulic cylinder buffer structure, it is characterised in that: piston (5) it is interior
It is provided between hole and the outer wall of piston rod (7) in piston and seals (12).
6. rubbish van as claimed in claim 4 lifts hydraulic cylinder buffer structure, it is characterised in that: damper piston it is interior
Piston bushing is provided between hole and piston rod (7) outer wall.
7. rubbish van as claimed in claim 4 lifts hydraulic cylinder buffer structure, it is characterised in that: damper piston includes
Cylinder and connecting bottom board positioned at cylinder one end, damper piston pass through connecting bottom board and piston rod (7) fixing assembling.
8. rubbish van as described in claim 1 lifts hydraulic cylinder buffer structure, it is characterised in that: outside piston (5)
Piston external seal (13) are provided between disc and the inner wall of cylinder body (3)；The periphery of piston (5) and the inner wall of cylinder body (3) it
Between be additionally provided with guidance tape, guidance tape is set to piston external seal (13) two sides.
9. rubbish van as claimed in any of claims 1 to 8 in one of claims lifts hydraulic cylinder buffer structure, feature exists
In: the material of damper piston uses continuous casting spheroidal graphite cast-iron.
10. rubbish van as claimed in any of claims 1 to 8 in one of claims lifts hydraulic cylinder buffer structure, feature exists
In: piston rod (7) is located at this one end of cylinder body (3) outside and is connected with head component (10), head component (10) and piston rod (7) it
Between by being welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734876.1A CN110345128B (en) | 2019-08-09 | 2019-08-09 | Buffer structure of lifting hydraulic cylinder of garbage transfer truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734876.1A CN110345128B (en) | 2019-08-09 | 2019-08-09 | Buffer structure of lifting hydraulic cylinder of garbage transfer truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345128A true CN110345128A (en) | 2019-10-18 |
| CN110345128B CN110345128B (en) | 2024-05-24 |
Family
ID=68184507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910734876.1A Active CN110345128B (en) | 2019-08-09 | 2019-08-09 | Buffer structure of lifting hydraulic cylinder of garbage transfer truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110345128B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425476A (en) * | 2020-03-29 | 2020-07-17 | 邵玉强 | Hydraulic cylinder |
| CN111425477A (en) * | 2020-04-06 | 2020-07-17 | 东莞海特帕沃液压科技有限公司 | Hydraulic cylinder with buffering and self-locking functions |
| WO2022104182A1 (en) * | 2020-11-16 | 2022-05-19 | Caterpillar Inc. | Integrated cylinder piston and bearing as a hydraulic cushion |
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| CN210317994U (en) * | 2019-08-09 | 2020-04-14 | 四川优机实业股份有限公司 | Lifting hydraulic oil cylinder buffer structure of garbage transfer truck |
-
2019
- 2019-08-09 CN CN201910734876.1A patent/CN110345128B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003247510A (en) * | 2002-02-26 | 2003-09-05 | Towa Seisakusho:Kk | Hydraulic cylinder having cushion function |
| CN201636117U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Adjustable gap-buffer hydraulic cylinder |
| CN203614510U (en) * | 2013-12-17 | 2014-05-28 | 泸州市龙马潭区长江液压件有限公司 | Hydraulic buffering oil cylinder |
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| CN205977887U (en) * | 2016-08-30 | 2017-02-22 | 东莞积信制造有限公司 | One -way buffering hydraulic cylinder |
| CN206458761U (en) * | 2016-08-31 | 2017-09-01 | 李茂强 | A kind of high-effect oil buffer |
| CN106593989A (en) * | 2017-02-04 | 2017-04-26 | 三汽车制造有限公司 | Hydraulic oil cylinder, hydraulic system and engineering machinery |
| CN210317994U (en) * | 2019-08-09 | 2020-04-14 | 四川优机实业股份有限公司 | Lifting hydraulic oil cylinder buffer structure of garbage transfer truck |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425476A (en) * | 2020-03-29 | 2020-07-17 | 邵玉强 | Hydraulic cylinder |
| CN111425477A (en) * | 2020-04-06 | 2020-07-17 | 东莞海特帕沃液压科技有限公司 | Hydraulic cylinder with buffering and self-locking functions |
| WO2022104182A1 (en) * | 2020-11-16 | 2022-05-19 | Caterpillar Inc. | Integrated cylinder piston and bearing as a hydraulic cushion |
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