CN106224325A - Plunger case, pumping system pendulum valve system and concrete pumping equipment - Google Patents
Plunger case, pumping system pendulum valve system and concrete pumping equipment Download PDFInfo
- Publication number
- CN106224325A CN106224325A CN201610729829.4A CN201610729829A CN106224325A CN 106224325 A CN106224325 A CN 106224325A CN 201610729829 A CN201610729829 A CN 201610729829A CN 106224325 A CN106224325 A CN 106224325A
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- Prior art keywords
- oil
- oil duct
- plunger rod
- plunger
- cylinder barrel
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- 238000005086 pumping Methods 0.000 title claims abstract description 22
- 239000003921 oil Substances 0.000 claims abstract description 177
- 239000012530 fluid Substances 0.000 claims abstract description 45
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
-
- 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
- F15B15/1428—Cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
nullIt relates to a kind of plunger case、Pumping system pendulum valve system and concrete pumping equipment，This plunger case includes plunger rod、Cylinder barrel and cylinder bottom，Cylinder barrel has the first end and the second end，Plunger rod is set in movably inner cavity of cylinder from the first end of cylinder barrel and is close to the sidewall of this cylinder barrel，Cylinder bottom is positioned at the second end of cylinder barrel，And plunger case has hydraulic fluid port and connects this hydraulic fluid port and the first oil duct of inner chamber，Wherein，The oil duct that throttles it is also formed with on plunger case，This throttling oil duct and the first oil duct are connected in parallel between hydraulic fluid port and inner chamber，Plunger rod can end the first oil duct during stress is retracted，So that the hydraulic oil of inner chamber flows to hydraulic fluid port after being throttled by main throttling oil duct，Thus the buffering to plunger rod is realized by hydraulic oil is throttled，During plunger rod stretches out，The hydraulic oil of hydraulic fluid port is mainly fed to inner chamber by the first oil duct，To realize the normal work of plunger rod.
Description
Technical field
It relates to engineering machinery field, in particular it relates to a kind of plunger case, use the pumping system of this plunger case to put
Valve system and include this pumping system pendulum valve system concrete pumping equipment.
Background technology
Being of wide application of plunger cylinder, such as, be applied on pump truck hopper, so that the S pendulum valve on hopper is intermittent
Swing, be assigned to concrete carry accordingly in pipe.
Due to job demand, plunger cylinder needs to complete short distance under high pressure, high speed to run, and usually single-acting
Cylinder, i.e. needs stress to retract.And when the plunger rod stress of plunger cylinder regains cylinder barrel, the cylinder bottom of plunger cylinder is produced impact
Relatively big, affect service life and and the service behaviour of reduction plunger cylinder of plunger cylinder.
The structure of traditional ram cylinder is complicated, and more at assembly connection between parts, this causes ram cylinder easy
Leakage of oil, and weight is bigger.Additionally, in order to meet job demand, processing technique and prescription to ram cylinder are the highest,
Cause manufacturing cost high.
Summary of the invention
The purpose of the disclosure is to provide a kind of plunger case, this plunger case simple in construction, and it is real to pass through this body structure
The now buffering to plunger rod.
Another object of the present disclosure is to provide a kind of pumping system pendulum valve system, including pendulum valve and a pair for driving this
The pendulum valve oil cylinder of pendulum valve, the plunger case that at least one in the pair of pendulum valve oil cylinder provides for the disclosure.
A further object of the present disclosure is to provide a kind of concrete pumping equipment, the pumping system provided including the above-mentioned disclosure
System pendulum valve system.
To achieve these goals, the disclosure provides a kind of plunger case, including plunger rod, cylinder barrel and cylinder bottom, described cylinder barrel
Having the first end and the second end, described plunger rod is slidably mounted on described inner cavity of cylinder also from the first end of described cylinder barrel
Being close to the sidewall of this cylinder barrel, described cylinder bottom is positioned at the second end of described cylinder barrel, and described plunger case has hydraulic fluid port and connects this
Hydraulic fluid port and the first oil duct of described inner chamber, described plunger case is also formed with the oil duct that throttles, this throttling oil duct and described first oil
Road is connected in parallel between described hydraulic fluid port and described inner chamber, and described plunger rod is during stress is retracted, it is possible to gradually cut-off or portion
Point end described first oil duct so that described inner chamber hydraulic oil by described throttling oil duct throttling after oil return to described hydraulic fluid port,
After the hydraulic oil pressurization of described hydraulic fluid port, start described plunger rod by described first oil duct of described throttling oil duct or part cut-off
Stretching out, the most described first oil duct is gradually turned on so that described hydraulic oil is fed to described inner chamber by described first oil duct.
Alternatively, the second oil duct that opening is offered towards described cylinder bottom, shape on described cylinder bottom it are formed with in described plunger rod
Becoming to have and be inserted into described second oil duct and bumper post that the inwall along this second oil duct moves, described throttling oil duct is at least part of
Be formed in described bumper post and towards described second oil duct opening, described first oil duct is by the on described cylinder barrel sidewall
One opening and described inner space gradually end with the described plunger rod that can be contracted or part cut-off.
Alternatively, described first opening aligns close to one end of described cylinder bottom with described bumper post.
Alternatively, described throttling oil duct includes the axial oil duct being formed in described bumper post and hangs down from this axial oil duct
Straight radially extending oil duct, the aperture of described axial oil duct is more than the aperture of described radial direction oil.
Alternatively, described throttling oil duct also includes connecting described radial direction oil and the throttle orifice of described first oil duct, this joint
The aperture of discharge orifice is less than the aperture of described radial direction oil.
Alternatively, the sidewall of described cylinder barrel is provided with snubber block, described hydraulic fluid port and described first oil duct and is formed on snubber block,
Described first oil duct extends from described hydraulic fluid port towards the sidewall of described cylinder barrel, and is removably provided with resistance on described snubber block
Buddhist nun's joint, is formed with described throttle orifice in this damping joint.
Alternatively, the lateral wall, end close to described cylinder bottom of described plunger rod is provided with for in described cylinder barrel
The sealing guide ring of wall contact, when cylinder bottom described in described plunger rod contacts, between described sealing guide ring and described first opening
Every layout, and close to the head position alignment setting of described bumper post.
Alternatively, described plunger rod is provided with oil leab close to one end of described cylinder bottom, described oil leab have into
Hydraulic fluid port and oil-out, described oil-out is formed at described plunger rod close on the end face of described cylinder bottom, and described oil-out is formed at
The outer peripheral face of described plunger rod.
Alternatively, the sidewall of the first end of described cylinder barrel being formed with the second opening, this second opening is provided with for examining
Survey the detection device of the position of the described oil-out of described oil leab.
Alternatively, described cylinder bottom is removably mounted on the second end of described cylinder barrel.
According to another aspect of the present disclosure, it is provided that a kind of pumping system pendulum valve system, including pendulum valve and a pair for driving
The pendulum valve oil cylinder of this pendulum valve, the plunger case that at least one in the pair of pendulum valve oil cylinder provides for the disclosure.
Another further aspect according to the disclosure, it is provided that a kind of concrete pumping equipment, the pumping provided including the above-mentioned disclosure
System pendulum valve system.
The disclosure provides the benefit that: ended the first oil duct by stress retraction plunger rod so that the liquid of inner chamber
Hydraulic fluid port is flowed to, to realize buffering to plunger rod after force feed mainly throttling by throttling oil duct.And stretch at needs plunger rod
Time, the hydraulic oil of pressurization can start plunger rod by throttling oil duct thus be gradually turned on the first oil duct such that it is able to by hydraulic fluid port
Hydraulic oil be quickly supplied to the interior intracavity of cylinder barrel, to promote normally stretching out of plunger rod.Overall process relies on self structure
Plunger rod realizes being switched off and on of the first oil duct, and process is not required to use extra check valve, simple and ingenious structure.
Other feature and advantage of the disclosure will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the disclosure, and constitutes the part of description, with following tool
Body embodiment is used for explaining the disclosure together, but is not intended that restriction of this disclosure.In the accompanying drawings:
Fig. 1 is the structure chart of the plunger case that the disclosure provides.
Description of reference numerals
1 plunger rod 2 cylinder barrel
3 cylinder bottom 4 snubber blocks
5 blanking cover 11 second oil ducts
12 oil leab 21 first oil ducts
24 anti-dust seal 25 sealing rings
26 supporting strip 27 mounting grooves
31 axial oil duct 32 radial direction oil
41 damping joint 122 oil-outs
42 hydraulic fluid port 121 oil-ins
22 first openings 13 seal guide ring
Detailed description of the invention
It is described in detail below in conjunction with accompanying drawing detailed description of the invention of this disclosure.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the disclosure, is not limited to the disclosure.
As it is shown in figure 1, according to the one side of the disclosure, it is provided that a kind of plunger case, including plunger rod 1, cylinder barrel 2 and cylinder bottom 3,
Cylinder barrel 2 has the first end and the second end, and plunger rod 1 is slidably mounted on cylinder barrel 2 inner chamber from the first end of cylinder barrel 2 and is close to
The inwall of this cylinder barrel 2, cylinder bottom 3 is positioned at the second end of cylinder barrel 2, and plunger case has hydraulic fluid port 42 and connects this hydraulic fluid port 42 and inner chamber
The first oil duct 21, so, oil-feed and the oil return of plunger case 1 can be realized by hydraulic fluid port 42.Specifically, hydraulic fluid port 42 can be with hydraulic pressure
The main reversing valve connection of system, thus realize the oil-feed to plunger rod 1 and oil return by reversal valve.
Wherein, the disclosure is also formed with on the plunger case in illustrative embodiments throttle oil duct, this throttling oil duct with
First oil duct 21 is connected in parallel between hydraulic fluid port 42 and inner chamber.Specifically, at plunger rod 1 during stress is retracted, it is possible to gradually
Cut-off or part cut-off the first oil duct 21 so that inner chamber hydraulic oil by throttling oil duct throttle after oil return to hydraulic fluid port 42, and
After the hydraulic oil of hydraulic fluid port 42 pressurizes, start plunger rod by the first oil duct 21 of throttling oil duct or part cut-off and stretch out, simultaneously
First oil duct 21 is gradually turned on so that hydraulic oil is fed to inner chamber by the first oil duct 21.
So, by stress retraction plunger rod 1, first oil duct 21 is ended so that the hydraulic oil of inner chamber can be main
Hydraulic fluid port 42 is flowed to, to realize the buffering to plunger rod 1 after throttling by throttling oil duct.And when needs plunger rod 1 stretches out, add
The hydraulic oil of pressure can start plunger rod 1 by throttling oil duct thus be gradually turned on the first oil duct 21 such that it is able to by hydraulic fluid port 42
Hydraulic oil be quickly supplied to the interior intracavity of cylinder barrel 2, to promote normally stretching out of plunger rod 1.Therefore, at above-mentioned plunger case
In work process, the only structure by the plunger rod 1 of self mechanism realizes, and the first oil duct 21 and the conducting of throttling oil duct and cut-off are not
Extra check valve, therefore simple and ingenious structure need to be used.
In the present embodiment, the second oil duct 11 that opening is offered towards cylinder bottom 3, shape on cylinder bottom 3 it are formed with in plunger rod 1
Become to have and be inserted into the second oil duct 11 and bumper post 33 that the inwall along this second oil duct 11 moves, i.e. bumper post 33 and cylinder barrel 2
Inside interval arrange, to allow the sidewall of the second oil duct 11 to be inserted into therebetween.Wherein, throttling oil duct is at least part of
Be formed at bumper post 33 in and towards the second oil duct 11 opening, the first oil duct 21 is by the first opening 22 on cylinder barrel 2 sidewall
With inner space.That is, plunger rod 1 is in telescopic process, and the sidewall of the movement of the second oil duct 11 can realize the first opening 22
Cut-off or conducting, thus realize the cut-off of the first oil duct 21 or conducting.Wherein, further, the first opening 22 and buffering
Post 33 aligns close to one end of cylinder bottom 3.I.e. first opening 22 is positioned at cylinder barrel 2 sidewall position closest to cylinder bottom 3, can be at plunger
When bar 1 is retracted into cylinder bottom 3, it is possible to completely switched off first opening 22, consequently facilitating quickly respond the startup of plunger rod 1, quickly lead
After Tong, hydraulic oil is fed in time inner chamber.In other embodiments, the first opening 22 can also be slightly away from cylinder bottom 3 and arranges.
Additionally in some embodiment, it is also possible to position-limit mechanism is set so that plunger rod 1 can not be retracted into cylinder bottom 3, thus achievement unit
Divide the possibility of cut-off the first opening 22.
It addition, in the present embodiment, the external diameter of bumper post 33 is slightly less than the internal diameter of the second oil duct 11.That is, bumper post 33
It is matched in clearance with the second oil duct 11, it is allowed to a small amount of fluid in variable closed containing cavity passes through, equally in the retraction of plunger rod 1
Cheng Zhong, can play throttling action.Specifically, after plunger rod 1 moves to the head position of bumper post 33, inner chamber is only capable of and passes through
Above-mentioned gap connects with the first opening 22 of the first oil duct 21, and the first oil duct 21 is cut off substantially.At this moment, bumper post 33 is inserted into
During second oil duct 11 so that the second oil duct 11 forms variable closed containing cavity, and now the pressure of closed containing cavity constantly increases
Greatly, hydraulic oil just can be forced to have to by throttling oil duct and to flow back to hydraulic fluid port, i.e. realize the throttling to the hydraulic oil in inner chamber.By
Less in the circulation of throttling oil duct, therefore, it can extend buffer time, and slow down the motion of plunger rod 1, it is to avoid fast ram
Larger vibration is produced to cylinder bottom 3.Now, the most a little fluid flows back to hydraulic fluid port 42, directly by above-mentioned gap by the first oil duct 21
To completely switched off first opening 22 of plunger rod 1, now plunger rod 1 is retracted the most simultaneously and is put in place.
And when needs plunger rod 1 stretches out, then the fluid pressurizeed first passes through throttling runner by pressure and starts plunger rod
1, now the first opening 22 is gradually turned on, so, and stretching out fluid and can gradually recover by the first oil duct 21 along with plunger rod 1
With inner space, thus timely respond to plunger rod 1 stretch out operation.
In the present embodiment, throttling oil duct includes the axial oil duct 31 being formed in bumper post and from this axial oil duct
31 vertically extending radial direction oil 32, wherein, throttling oil duct also includes connecting radial direction oil 32 and the throttle orifice of the first oil duct 21,
The aperture of this throttle orifice is less than axial oil duct 31 and the aperture of radial direction oil 32.As it is shown in figure 1, specifically, axial oil duct 31 can
To be coaxially disposed with the second oil duct 11, when plunger rod 1 is retracted and forced hydraulic oil to open throttling oil duct, hydraulic oil first flows into
Axially in oil duct 31, being then transferred to radial direction oil 32 to export to hydraulic fluid port 42, now, throttle orifice can effectively control hydraulic oil
Flow, can realize effectively throttling by throttle orifice, slow down the motion of plunger rod 1, extend buffer time.
Further, process this throttle orifice for convenience to reduce plunger rod 1 retraction and clash into the impulsive force of cylinder bottom 3, at this
In embodiment, as it is shown in figure 1, the sidewall of cylinder barrel 2 is provided with snubber block 4, hydraulic fluid port 42 and the first oil duct 21 are formed at snubber block 4
On, the first oil duct 21 extends from hydraulic fluid port 42 towards the sidewall of cylinder barrel 2, and is removably provided with damping joint on snubber block 4
41, it is formed with above-mentioned throttle orifice in this damping joint 41.Wherein, throttle orifice can be stepped hole, close to the first oil duct 21 is
Aperture section.Wherein as in a kind of embodiment, damping joint 41 is formed external screw thread, and is formed with connection on snubber block 4
The installing hole of the first oil duct 21, damping joint 41 is threaded on installing hole, so that stepped hole and the first oil duct 21 connect.
Additionally it is also formed with the endoporus connected with radial direction oil 32 on damping joint 41, thus connects radial direction oil 32 He by this endoporus
Stepped hole, thus realize overall throttling oil duct.It addition, in the present embodiment, due to radial direction oil 32, some is formed at
In snubber block 4, in order to ensure the intensity of snubber block 4, the aperture of radial direction oil 32 is less than the aperture of axial oil duct 31.
In order to save the arrangement space of oil duct, in the present embodiment, throttle orifice is parallel to axial oil duct 31, the first oil duct
21 are parallel to radial direction oil 32.Needed by the can be returned to after twice vertical inflection by the hydraulic oil of throttling oil duct oil return
One oil duct 21, further increases the buffering to hydraulic oil.
As it is shown in figure 1, be provided with for the contact internal walls with cylinder barrel 2 on the lateral wall, end close to cylinder bottom 3 of plunger rod 1
Sealing guide ring 13, when plunger rod 1 contacts cylinder bottom 3, seal guide ring 13 and the first open space layout, and with close
The head position alignment of bumper post is arranged.So, guide ring 13 is sealed while the linear motion of guide post stopper rod 1, it is ensured that
First oil duct 21 can be ended during plunger rod 1 is retracted in time.
In the present embodiment, plunger rod 1 is provided with oil leab 12 close to one end of cylinder bottom 3, and oil leab 12 has
Oil-in 121 and oil-out 122, oil-in 121 is formed at plunger rod 1 close on the end face of cylinder bottom 3, and oil-out 122 is formed at
The outer peripheral face of plunger rod 1.That is, oil leab 12 is utilized to be filled with hydraulic pressure between the outer peripheral face of cylinder barrel 2 inwall and plunger rod 1
Oil, plays certain lubrication, prevents plunger rod 1 in telescopic process, produces bigger friction with cylinder barrel 2.
Further, the sidewall of the first end of cylinder barrel 2 being formed with the second opening, this second opening is provided with for detecting
The detection device of the position of the oil-out 122 of oil leab 12.By detecting the position of hydraulic fluid port 122, indirectly realize plunger
The detection of bar 1 position, in order to control movement travel and the direction of motion of plunger rod 1.
Specifically, detection device is pressure transducer, and this pressure transducer is installed on the blanking cover 5 of blocking the second opening.
I.e. when oil-out 122 and the second register, it is possible to detected the pressure signal of inner chamber by pressure transducer, thus obtain
The position of plunger rod 1, it is judged that whether plunger rod 1 moves puts in place, it is ensured that the flexible reciprocating motion of plunger rod 1.
In the present embodiment, the inwall of the first end of cylinder barrel 2 is formed for installing anti-dust seal 24 and/or sealing ring
25 and/or the mounting groove of multiple axially spaced setting of supporting strip 26.Mounting groove is used for installing sealing member and director element, knot
It is no longer necessary to single guide elements on structure, simplifies oil cylinder, reduce the fault point.Wherein, 24 oil pockets of anti-dust seal and the external world
Isolation, the most dust-proof, internal oil sealing, sealing ring 25 can play the purpose preventing leakage of oil equally, it is possible to jointly coordinates, and plays each
Self-applying, prevents leaking outside of fluid.Plunger rod 1 then can be guided by supporting strip 26, it is ensured that it moves along a straight line.
In the present embodiment, cylinder bottom 3 is removably mounted on the second end of cylinder barrel 2, and wherein, bumper post and cylinder bottom 3 are
One-body molded.
According to another aspect of the present disclosure, it is provided that a kind of pumping system pendulum valve system, including pendulum valve and a pair for driving
The pendulum valve oil cylinder of this pendulum valve, wherein the connected mode of pendulum valve oil cylinder and pendulum valve is known technology, does not do too much repeating at this.Its
In, at least one in a pair pendulum valve oil cylinder is plunger case disclosed above, it is achieved the buffering in pendulum valve is back and forth known, improves
The life-span of pendulum valve oil cylinder.
Another further aspect according to the disclosure, it is provided that a kind of concrete pumping equipment, such as pump truck or drag pump, its pumping system
Pumping system including above-mentioned offer puts valve system.Wherein, the main flow of concrete pumping equipment uses S valve arrangement, puts valve system
Being the executive component driving the work of S valve, pendulum valve system is arranged on hopper.Under the effect of hydraulic oil, promote a pair pendulum valve oil
The plunger rod of cylinder is movable, and plunger rod can drive the rocking arm being arranged between a pair pendulum valve oil cylinder, and now, rocking arm can drive S
Valve swings, thus realizes the commutation of S valve, and concrete pump is delivered to destination.
To sum up, the simple in construction of this plunger case, low cost of manufacture, and by offering throttling oil duct, can be at plunger rod
During stress is retracted, end the first oil duct so that the hydraulic oil of inner chamber mainly flows to hydraulic fluid port by throttling oil duct, it is thus possible to
The motion of enough bumper post stopper rods；During plunger rod stretches out, turn on the first oil duct such that it is able to by fast for the hydraulic oil of hydraulic fluid port
It is fed to the interior intracavity of cylinder barrel, to promote normally stretching out of plunger rod fastly.
The optional embodiment of the disclosure is described in detail above in association with accompanying drawing, but, the disclosure is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the disclosure, multiple letter can be carried out with technical scheme of this disclosure
Monotropic type, these simple variant belong to the protection domain of the disclosure.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the disclosure to various can
The compound mode of energy illustrates the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the disclosure, as long as it is without prejudice to this
Disclosed thought, it should be considered as disclosure disclosure of that equally.
Claims (10)
1. a plunger case, including plunger rod (1), cylinder barrel (2) and cylinder bottom (3), described cylinder barrel (2) has the first end and second
End, described plunger rod (1) is slidably mounted on described cylinder barrel (2) inner chamber from the first end of described cylinder barrel (2) and is close to institute
Stating the sidewall of cylinder barrel (2), described cylinder bottom (3) is positioned at the second end of described cylinder barrel (2), and described plunger case has hydraulic fluid port (42)
With the first oil duct (21) connecting this hydraulic fluid port (42) and described inner chamber, it is characterised in that be also formed with throttling on described plunger case
Oil duct, this throttling oil duct and described first oil duct (21) are connected in parallel between described hydraulic fluid port (42) and described inner chamber,
Described plunger rod (1) stress retract during, it is possible to gradually cut-off or part end described first oil duct (21) with
After the hydraulic oil of described inner chamber is throttled by described throttling oil duct, oil return is to described hydraulic fluid port (42),
After the hydraulic oil pressurization of described hydraulic fluid port (42), opened by described first oil duct (21) of described throttling oil duct or part cut-off
Dynamic described plunger rod (1) stretches out, and the most described first oil duct (21) is gradually turned on so that described hydraulic oil is by described first
Oil duct (21) is fed to described inner chamber.
Plunger case the most according to claim 1, it is characterised in that be formed with opening in described plunger rod (1) towards described
The second oil duct (11) that cylinder bottom (3) is offered, described cylinder bottom (3) is formed be inserted into described second oil duct (11) and along this
The bumper post (33) that the inwall of two oil ducts (11) moves, described throttling oil duct at least be partially formed in described bumper post (33)
And towards described second oil duct (11) opening, described first oil duct (21) is by the first opening on described cylinder barrel (2) sidewall
(22) gradually end with the described plunger rod (1) that can be contracted with described inner space or part is ended.
Plunger case the most according to claim 2, it is characterised in that described first opening (22) connects with described bumper post (33)
One end alignment of nearly described cylinder bottom (3).
Plunger case the most according to claim 2, it is characterised in that described throttling oil duct includes being formed at described bumper post
(33) axial oil duct (31) in and from this axial oil duct (31) vertically extending radial direction oil (32), described throttling oil duct is also
Including connecting described radial direction oil (32) and the throttle orifice of described first oil duct (21), the aperture of this throttle orifice less than described axially
Oil duct (31) and the aperture of described radial direction oil (32).
Plunger case the most according to claim 4, it is characterised in that the sidewall of described cylinder barrel (2) is provided with snubber block (4),
Described hydraulic fluid port (42) and described first oil duct (21) are formed on snubber block (4), and described first oil duct (21) is from described hydraulic fluid port
(42) sidewall towards described cylinder barrel (2) extends, and is removably provided with damping joint (41) on described snubber block (4),
This damping joint is formed with described throttle orifice in (41).
6. according to the plunger case described in Claims 2 or 3, it is characterised in that described plunger rod (1) close to described cylinder bottom (3)
Lateral wall, end on be provided with for the sealing guide ring (13) with the contact internal walls of described cylinder barrel (2), at described plunger rod
(1), when contacting described cylinder bottom (3), described sealing guide ring (13) and described first opening (22) interval are arranged, and close to institute
The head position alignment stating bumper post (33) is arranged.
Plunger case the most according to claim 1, it is characterised in that described plunger rod (1) is close to one end of described cylinder bottom (3)
Being provided with oil leab (12), described oil leab (12) has oil-in (121) and oil-out (122), described oil-in
(121) being formed at described plunger rod (1) close on the end face of described cylinder bottom (3), described oil-out (122) is formed at described plunger
The outer peripheral face of bar (1).
Plunger case the most according to claim 7, it is characterised in that be formed on the sidewall of the first end of described cylinder barrel (2)
Second opening, this second opening is provided with the inspection of the position of the described oil-out (122) for detecting described oil leab (12)
Survey device.
9. pumping system pendulum a valve system, including pendulum valve and a pair for driving the pendulum valve oil cylinder of this pendulum valve, it is characterised in that
At least one in the pair of pendulum valve oil cylinder is according to the plunger case described in any one in claim 1-8.
10. a concrete pumping equipment, it is characterised in that also include pendulum valve system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729829.4A CN106224325A (en) | 2016-08-25 | 2016-08-25 | Plunger case, pumping system pendulum valve system and concrete pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729829.4A CN106224325A (en) | 2016-08-25 | 2016-08-25 | Plunger case, pumping system pendulum valve system and concrete pumping equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107152397A (en) * | 2017-05-19 | 2017-09-12 | 北汽福田汽车股份有限公司 | Put valve oil cylinder, hydraulic system of pump and pumping equipment with it |
| CN112983924A (en) * | 2019-12-18 | 2021-06-18 | 比亚迪股份有限公司 | Plunger cylinder and vehicle |
| CN114593109A (en) * | 2022-02-15 | 2022-06-07 | 湖南中联重科智能高空作业机械有限公司 | Cylinder Shock Valves and Hydraulic Cylinders |
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| US20120313302A1 (en) * | 2011-06-13 | 2012-12-13 | Mac Valves, Inc. | Piston rod and cylinder seal device for aluminum bath crust breaker |
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| CN107152397A (en) * | 2017-05-19 | 2017-09-12 | 北汽福田汽车股份有限公司 | Put valve oil cylinder, hydraulic system of pump and pumping equipment with it |
| CN112983924A (en) * | 2019-12-18 | 2021-06-18 | 比亚迪股份有限公司 | Plunger cylinder and vehicle |
| CN112983924B (en) * | 2019-12-18 | 2022-05-13 | 比亚迪股份有限公司 | Plunger cylinder and vehicle |
| CN114593109A (en) * | 2022-02-15 | 2022-06-07 | 湖南中联重科智能高空作业机械有限公司 | Cylinder Shock Valves and Hydraulic Cylinders |
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Application publication date: 20161214 |