CN110159610A - The plug and hydraulic device working cylinder of hydraulic device working cylinder - Google Patents
The plug and hydraulic device working cylinder of hydraulic device working cylinder Download PDFInfo
- Publication number
- CN110159610A CN110159610A CN201910346143.0A CN201910346143A CN110159610A CN 110159610 A CN110159610 A CN 110159610A CN 201910346143 A CN201910346143 A CN 201910346143A CN 110159610 A CN110159610 A CN 110159610A
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- Prior art keywords
- plug
- hydraulic device
- working cylinder
- device working
- cushion collar
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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
-
- 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
- F15B15/221—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke for accelerating the stroke, e.g. by area increase
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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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention relates to the plug of hydraulic device working cylinder and hydraulic device working cylinders, the plug of hydraulic device working cylinder, including centre bore, the centre bore is inserted into for the buffer shaft on the piston of hydraulic device working cylinder, and plug also has the block end face that the oil-through hole on cushion collar is blocked when cooperating with cushion collar block；The block end face is equipped with groove, and the groove is connected with the centre bore；Alternatively, the plug is equipped with communicating passage, on the block end face, another end opening is arranged on the corresponding wall surface of plug to be connected to the Z chamber of hydraulic device working cylinder for the setting open at one end of communicating passage.In the starting of hydraulic device working cylinder, groove is interior or communicating passage is in the oil liquid of block end face opening has impetus close to the end face of the plug of hydraulic device working cylinder to cushion collar, oil liquid is increased to the motive force of cushion collar, increases the startup power of hydraulic device working cylinder.
Description
Technical field
The present invention relates to a kind of plug of hydraulic device working cylinder and hydraulic device working cylinders.
Background technique
Hydraulic actuating mechanism utilizes the incompressible principle of liquid, and high pressure oil is sent into working cylinder two sides to realize breaker
Divide-shut brake, the hydraulic actuating mechanism of the breaker as disclosed in the application for a patent for invention of Publication No. CN101527206A.
As depicted in figs. 1 and 2, the working cylinder of hydraulic actuating mechanism includes cylinder body 1, blocks in plunger shaft one in the prior art
Plug 4, the guiding movement at end are assemblied in the piston 2 in the plunger shaft of cylinder body 1, and are axially moveable and are assemblied in plunger shaft
Cushion collar 3.The course of work of the working cylinder when hydraulic actuating mechanism closes a floodgate starting is: oil liquid passes through the center of plug 4 from Z chamber 6
Hole enters working cylinder lower part, pushes cushion collar 3 and piston 2 to move upwardly together the stroke of L2, cushion collar 3 is by plunger shaft later
Block step block, oil liquid enters plunger shaft from the gap between the oil-through hole 5 and cushion collar 3 and piston 2 of cushion collar 3
In, push piston 2 to continue to move to the direction far from plug 4.Above-mentioned Z chamber 6 be hydraulic actuating mechanism control valve in control
The control oil pocket of hydraulic fluid port connection.
Above-mentioned working cylinder has the following problems: when closing operation, before cushion collar 3 leaves plug 4, and the work of initial oil liquid
It is only the endoporus area of cushion collar 3 with area, causes oil liquid insufficient to the initial impulse of cushion collar 3, in turn result in piston 2
Initial impulse it is insufficient, there is " creeping " phenomenon in piston 2, leads to that closing time is elongated or closing time is unstable.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic device working cylinders, to solve hydraulic device working cylinder in the prior art
Start slow technical problem；The object of the invention is also to provide a kind of the stifled of hydraulic device working cylinder to solve the above problems
Head.
The plug of hydraulic device working cylinder of the invention adopts the following technical scheme that
The plug of hydraulic device working cylinder includes centre bore, and the centre bore is for the buffer shaft on the piston of hydraulic device working cylinder
Insertion, plug also have the block end face that the oil-through hole on cushion collar is blocked when cooperating with cushion collar block；The hydraulic dress
The block end face for setting the plug of working cylinder is equipped with groove, and the groove is connected with the centre bore；Alternatively, the hydraulic dress
The plug for setting working cylinder is equipped with communicating passage, and on the block end face, the other end is opened for the setting open at one end of communicating passage
To be connected to the Z chamber of hydraulic device working cylinder on the corresponding wall surface for the plug that hydraulic device working cylinder is arranged in mouth.
The beneficial effects of the present invention are: plunger shaft is arranged in for the buffering row with piston in the plug of hydraulic device working cylinder
The end point of the corresponding one end in journey end, in the starting of hydraulic device working cylinder, before cushion collar is mobile, oil liquid can pass through centre bore
Into in groove, alternatively, oil liquid enters in the communicating passage that is connected to Z chamber, except the oil liquid in cushion collar inner hole to cushion collar and
Piston has outside impetus, the notch of groove or communicating passage block end face opening oil liquid to cushion collar close to hydraulic
The end face of the plug of device working cylinder also has impetus, compared with prior art, increases promotion of the oil liquid to cushion collar
Power, increases the startup power of hydraulic device working cylinder, to improve the starting speed of hydraulic device working cylinder；In addition, cushion collar
The notch or communicating passage of oil liquid and groove, can be quick under the collective effect of block end face opening oil liquid in its inner hole
Leave the block end face of the plug of hydraulic device working cylinder, open the oil-through hole on cushion collar, thus by increased oil mass come
Increase the startup power of hydraulic device working cylinder, improves the starting speed of hydraulic device working cylinder.
For the starting speed for further increasing hydraulic device working cylinder, groove described in this programme is along hydraulic device working cylinder
Plug be circumferentially with two or more, guarantee hydraulic device working cylinder plug structural strength while, the quantity of groove
More, initial oil liquid is bigger to the active area of cushion collar, and the startup power of hydraulic device working cylinder is bigger, then hydraulic device works
The starting speed of cylinder is faster.
To guarantee cushion collar stress balance, increase the job stability of hydraulic device working cylinder, each groove edge in this programme
The circumferential direction of the plug of hydraulic device working cylinder is uniformly distributed.
For the starting speed for further increasing hydraulic device working cylinder, centre bore described in this programme has enlarged-diameter
Section, centre bore are used to be formed close to the opening of one end of piston by the raised-diameter segment.The opening of raised-diameter segment it is interior
Diameter is greater than the inner hole of cushion collar close to the aperture of one end of plug, in the starting of hydraulic device working cylinder, in raised-diameter segment
Oil liquid has impetus close to the end face of the plug of hydraulic device working cylinder to cushion collar, increases oil liquid and pushes away to cushion collar
Power, increases the startup power of hydraulic device working cylinder, to improve the starting speed of hydraulic device working cylinder.
Raised-diameter segment described in this programme includes the flaring gradually increased along the bottom hole of centre bore to aperture direction size
Section, varying aperture gradient is small at raised-diameter segment, flow stability of the oil liquid in raised-diameter segment is advantageously ensured that, to protect
Demonstrate,prove the stability when starting of hydraulic device working cylinder.
Flared section described in this programme is taper hole section, and the design of taper hole section is easy to process.
Hydraulic device working cylinder of the invention adopts the following technical scheme that
Hydraulic device working cylinder includes cylinder body and piston；Plunger shaft is equipped in cylinder body, piston along the axial cylinder assemble by guiding activity
In plunger shaft, inner wall of the plunger shaft for one end corresponding with the cushion stroke end of piston is equipped with block step, the end
End be equipped with plug；Cushion collar is movably arranged between block step and plug along the axial cylinder, which is provided with for piston
Buffer shaft insertion inner hole, be additionally provided with along axially through oil-through hole；Plug includes centre bore, and the centre bore is for hydraulic device
Buffer shaft insertion on the piston of working cylinder, plug also have the oil-through hole blocked on cushion collar when cooperating with cushion collar block
Block end face；The block end face of plug is equipped with groove, and the groove is connected with the centre bore；Alternatively, the plug
It is equipped with communicating passage, on the block end face, plug is arranged in another end opening for the setting open at one end of communicating passage
To be connected to the Z chamber of hydraulic device working cylinder on corresponding wall surface.
The beneficial effects of the present invention are: before cushion collar is mobile, oil liquid can pass through center in the starting of hydraulic device working cylinder
Hole enters in groove, alternatively, oil liquid enters in the communicating passage being connected to Z chamber, except the oil liquid in cushion collar inner hole is to cushion collar
And piston has outside impetus, the notch or communicating passage of groove are close to cushion collar stifled in the oil liquid of block end face opening
The end face of head also has impetus, compared with prior art, increases oil liquid to the motive force of cushion collar, increases hydraulic dress
The startup power of working cylinder is set, to improve the starting speed of hydraulic device working cylinder；In addition, cushion collar in its inner hole oil liquid with
And the notch or communicating passage of groove can quickly leave the block end of plug under the collective effect of block end face opening oil liquid
The oil-through hole on cushion collar is opened in face, to increase the startup power of hydraulic device working cylinder by increasing oil mass, improves liquid
The starting speed of pressure device working cylinder.
For the starting speed for further increasing hydraulic device working cylinder, groove described in this programme is circumferentially with two along plug
More than a, while guaranteeing the structural strength of plug, the quantity of groove is more, and initial oil liquid gets over the active area of cushion collar
Greatly, the startup power of hydraulic device working cylinder is bigger, then the starting speed of hydraulic device working cylinder is faster.
To guarantee cushion collar stress balance, increase the job stability of hydraulic device working cylinder, each groove edge in this programme
The circumferential direction of plug is uniformly distributed.
For the starting speed for further increasing hydraulic device working cylinder, the centre bore of plug has enlarged-diameter in this programme
Section, centre bore are used to be formed close to the opening of one end of piston by the raised-diameter segment.The opening of raised-diameter segment it is interior
Diameter is greater than the inner hole of cushion collar close to the aperture of one end of plug, in the starting of hydraulic device working cylinder, in raised-diameter segment
Oil liquid has impetus close to the end face of plug to cushion collar, increases oil liquid to the motive force of cushion collar, increases hydraulic
The startup power of device working cylinder, to improve the starting speed of hydraulic device working cylinder.
Raised-diameter segment described in this programme includes the flaring gradually increased along the bottom hole of centre bore to aperture direction size
Section, varying aperture gradient is small at raised-diameter segment, flow stability of the oil liquid in raised-diameter segment is advantageously ensured that, to protect
Demonstrate,prove the stability when starting of hydraulic device working cylinder.
Flared section described in this programme is taper hole section, and the design of taper hole section is easy to process.
For the starting speed for further increasing hydraulic device working cylinder, the radial outer end of groove described in this programme is in plug
Radially it is located at the outside of oil-through hole, the cushion collar rotation stop is assemblied in plunger shaft, and the size of such groove can be in plug diameter
Biggish length is upwardly extended, initial oil liquid and cushion collar contact area are increased, is conducive to increase opening for hydraulic device working cylinder
It is dynamic to hasten.
Detailed description of the invention
Fig. 1 is the partial structural diagram of hydraulic device working cylinder in the prior art；
Fig. 2 is the A-A direction view of Fig. 1；
Fig. 3 is the partial structural diagram of the specific embodiment one of hydraulic device working cylinder of the invention；
Fig. 4 is the top view of plug in Fig. 3；
Fig. 5 is the B-B direction view of Fig. 3；
Fig. 6 is the main view of cushion collar in Fig. 3；
Fig. 7 is the top view of cushion collar in Fig. 3；
Fig. 8 is the connection status figure of hydraulic device working cylinder and control valve of the invention；
Fig. 9 is the structural schematic diagram of the plug of the specific embodiment two of hydraulic device working cylinder of the invention；
Figure 10 is the top view of Fig. 9；
Figure 11 is the structural schematic diagram of the plug of the specific embodiment three of the hydraulic device working cylinder of invention；
Figure 12 is the top view of Figure 11；
Figure 13 is the structural schematic diagram of the plug of the specific embodiment four of the hydraulic device working cylinder of invention；
Figure 14 is the top view of Figure 13.
In figure: 1- cylinder body；2- piston；3- cushion collar；4- plug；5- oil-through hole；6-Z chamber；11- cylinder body；12- piston；13-
Cushion collar；14- plug；15- oil-through hole；16- crosses oil groove；17- leads to oil groove；19-P chamber；20-T chamber；21- control valve；22- fuel tank；
23- accumulator；111- block step；112- plunger shaft；113-Z chamber；121- buffer shaft；141- centre bore；142- through-hole；
143- block end face；144- groove；145- turns edge outside；146- taper hole section；1431- block end face；1411- centre bore；1441- connects
Circulation passage；1432- block end face；1412- centre bore；1421- through-hole；1442- connectivity slot；1422- through-hole；1433- block end
Face；1443- communicating passage.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment one of hydraulic device working cylinder of the invention, as shown in figure 3, hydraulic device working cylinder includes cylinder body
11 and piston 12, plunger shaft 112 is equipped in cylinder body 11, piston 12 is assemblied in plunger shaft 112 along the axially directed activity of cylinder body 11,
Inner wall of the plunger shaft 112 for one end corresponding with the cushion stroke end of piston 12 is equipped with block step 111, the end at the end
Head is equipped with plug 14.The center of plug 14 is equipped with the centre bore 141 being inserted into for the buffer shaft 121 of piston 12.
Hydraulic device working cylinder further includes cushion collar 13, and cushion collar 13 is inserted into equipped with the buffer shaft 121 for piston 12
Inner hole, cushion collar 13 are axially movably arranged between block step 111 and plug 14 along cylinder body 11.Cushion collar 13 is equipped with along axis
Also there is the block end face that oil-through hole 15 is blocked when cooperating with 13 block of cushion collar to the oil-through hole 15 of perforation, on plug 14
143。
Plug 14 in the present embodiment is bolted to connection with cylinder body 11, and as shown in Figure 3 and Figure 4, plug 14 is separate
One end of block end face 143, which is equipped with, turns edge 145 outside, and turn edge 145 is equipped with connecting hole (not shown) outside, and cylinder body 11 is equipped with
Threaded hole (not shown) corresponding with connecting hole, bolt pass through connecting hole and are fixedly connected with threaded hole, plug 14 is consolidated
It is scheduled on the end point of cylinder body 11.
Cylinder body 11 is equipped with Z chamber 113, and plug 14 is equipped with through-hole 142, and the both ends of through-hole 142 are respectively and in plug 14
Heart hole 141 is connected with Z chamber 113.Block step 111 is greater than the axis of cushion collar 13 at a distance from the block end face 143 of plug 14
To size, so that cushion collar 13 can be moved axially along cylinder body 11.
As shown in Figure 3 and Figure 4, the block end face 143 of plug 14 is equipped with groove 144, and groove 144 is along the diameter of plug 14
To extension, and the hole wall for penetrating through centre bore 141 makes groove 144 be connected with centre bore 141, and the present embodiment further groove 144 is along stifled
First 14 are circumferentially with four, and four grooves 144 are uniformly distributed along the circumferential direction of plug 14.It should be noted that in the present embodiment, it is recessed
The radial outer end of slot 144 is located at the inside of oil-through hole 15 in plug 14 in the radial direction, avoids keeping off in plug 14 and cushion collar 13
Groove 144 is connected to oil-through hole 15 when only cooperating, and influences the buffering effect of cushion collar 13.
As shown in Figures 5 to 7, the lateral wall of cushion collar 13 was equipped with oil groove 16, and crossed oil groove 16 in cushion collar 13
Both ends of the surface form opening, cross oil groove 16 and are connected far from the open at one end and plunger shaft 112 of plug 14, another end opening is buffering
It is blocked when set 13 cooperates with 14 block of plug by the block end face 143 of plug 14.Cross oil groove 16 cushion collar 13 in the radial direction
Positioned at the outside of oil-through hole 15, so that crossing has certain intervals between oil groove 16 and oil-through hole 15, guarantee that the structure of cushion collar is strong
Degree.
As shown in Figure 6 and Figure 7, the end face of the one end of cushion collar 13 far from plug 14 is equipped with the logical oil groove radially extended
17, the inner hole wall of one end perforation cushion collar 13 of logical oil groove 17 is simultaneously connected with the inner hole of cushion collar 13, leads to the radial direction of oil groove 17
Outer end is connected with oil groove 16 is crossed.There are four oil groove 16 is circumferentially evenly distributed with along cushion collar 13 excessively in the present embodiment, lead to the also edge of oil groove 17
There are four cushion collar 13 is circumferentially uniformly distributed.
The notch that oil groove 16 is crossed in the present embodiment is flaring, specifically, crossing oil groove 16 includes two groove sidewalls and connection two
The groove bottom wall of groove sidewall, two V-shaped settings of groove sidewall were less than the notch of oil groove 16 far from slot bottom close to the width of slot bottom
Width.The radial outer end of logical oil groove 17 was arranged in the groove bottom wall of oil groove 16, and led to the width of oil groove 17 and cross oil groove 16
Groove bottom wall width it is equal.
As shown in figure 8, above-mentioned hydraulic device working cylinder is applied on hydraulic actuating mechanism, the control valve of hydraulic actuating mechanism
21 for controlling the movement of hydraulic device working cylinder, and accumulator 23 is connected to by P chamber 19 with plunger shaft 112.Above-mentioned Z chamber 113 is liquid
Press the control oil pocket that be connected to control port in the control valve 21 of operating mechanism, by control valve 21 control Z chamber 113 and P chamber 19,
The connection situation of T chamber 20 acts to control hydraulic device working cylinder.Piston 12 divides plunger shaft 112 for two parts, respectively
A part and second part, first part are arranged close to the closing position of piston 12, sub-gate position of the second part close to piston 12
It installs, P chamber 19 is connected to the first part of plunger shaft 112 always.Cushion collar in second part is set in the present embodiment
Buffering noose for cushion collar 13 of the invention, for improving starting speed when hydraulic actuating mechanism closes a floodgate, in first part
Structure is identical as buffering nested structure in the prior art；In other embodiments, the cushion collar in first part and second part is equal
Using cushion collar 13 of the invention, the buffering nested structure being arranged in first part certainly is needed according to hydraulic device working cylinder
Specific structure makees adaptability design.
Specifically, Z chamber 113 is connected to by control valve 21 with T chamber 20, and is connected with fuel tank 22, Z chamber when open position
It is low pressure oil in 113, closing operation can be carried out.After control valve 21 is connected to combined floodgate order, the spool of control valve 21 is converted, P chamber
19 oil liquid enter the Z chamber 113 of 11 lower part of cylinder body by control valve 21, and Z chamber 113 is connected to P chamber 19 at this time, and Z chamber 113 becomes high pressure
Oil pushes piston 12 and cushion collar 13 to move upwards, realizes the conjunction of hydraulic actuating mechanism using the upper and lower difference in areas of piston 12
Lock operation.
Closing operation process, in the starting of hydraulic device working cylinder, before cushion collar 13 leaves plug 14, during oil liquid can pass through
Heart hole enters in groove 144, and the oil liquid in groove 144 has impetus close to the end face of plug 14 to cushion collar 13, increases
Motive force of the oil liquid to cushion collar 13 increases the startup power of hydraulic device working cylinder, improves opening for hydraulic device working cylinder
Dynamic speed.In addition, when piston 12 not yet terminates the stroke of L1, oil liquid can be from cushion collar when the stroke of the mobile L2 of cushion collar 13
13 oil-through hole 15, the gap crossed between oil groove 16 and 13 inner hole of piston 12 and cushion collar enter plunger shaft 112, with existing skill
Art is compared, and the design for crossing oil groove 16 increases the fuel delivery to plunger shaft 112；Logical oil groove 17 and cushion collar 13 on cushion collar 13
Inner hole be in connected state, the oil liquid in Z chamber 113 can enter logical oil groove 17 by the inner hole of cushion collar 13, increase starting
When oil liquid to the active area of piston 12, further increase the starting speed of hydraulic device working cylinder.These measures increase conjunction
Flow area and the oil effect area when lock, increase startup power when combined floodgate, solve the working cylinder of hydraulic actuating mechanism
Creeping phenomenon, improve hydraulic actuating mechanism work reliability and stability.
When hydraulic actuating mechanism is in closing position, Z chamber 113 is connected to by control valve 21 with P chamber 19, is high pressure oil, can
To carry out sub-switching operation.After control valve 21 is connected to separating brake order, the spool of control valve 21 is converted, and Z chamber 113 passes through 21 He of control valve
T chamber 20 is connected to, and leads to fuel tank 22, and Z chamber 113 becomes low pressure oil at this time, and piston moves downward under the promotion of top high pressure oil, real
The sub-switching operation of existing hydraulic actuating mechanism.
In separating brake latter stage, the inner hole of the buffer shaft insertion cushion collar 13 of piston 12, oil liquid pushes piston 12 and cushion collar 13
To close to the movement of the direction of plug 14, cushion collar 13 crosses oil groove 16, mistake by 143 block of block end face of plug 14 at this time later
Oilhole 15 is blocked by the block end face 143 of plug 14, and oil liquid is only capable of the gap between piston 12 and the inner hole of cushion collar 13
Outflow makes the reduction of 12 movement speed of piston, plays buffer function to piston 12 to increase oil liquid resistance.
Groove 144 in the present embodiment is axially arranged with four, and four grooves 144 along the plug 14 of hydraulic device working cylinder
Circumferential direction along plug 14 is uniformly distributed, and in other embodiments, the quantity of plug upper groove can be set as needed, to guarantee plug
Structural strength, it is preferred that groove is arranged three, five, six；Certainly six or more be may also set up；Four grooves can also be along stifled
The a certain diameter symmetry arrangement of head, i.e., using a certain diameter of plug as the axis of symmetry, four grooves are symmetricly set on symmetry axis
The two sides of line, and in the distance between not ipsilateral adjacent two groove of the axis of symmetry not equal to the phase ipsilateral in the axis of symmetry
The distance between adjacent two grooves；Certainly, it is identical that the distance between adjacent two groove, which can also be set as needed, in four grooves
Or it is different.
The radial outer end of the present embodiment further groove 144 is radially located at the inside of oil-through hole 15 in plug 14, in other realities
It applies in example, the radial outer end of groove can radially be located at the outside of oil-through hole in the plug of hydraulic device working cylinder, at this point, buffering
Set rotation stop is assemblied in plunger shaft, and groove is radially staggeredly arranged in plug with oil groove and the oil-through hole excessively on cushion collar, with
It prevents groove to be connected to when cushion collar cooperates with plug block with oil groove or oil-through hole excessively, influences the buffering effect of cushion collar.Tool
Body, guide pad can be set on cushion collar, be arranged in the cavity wall of plunger shaft along its axially extending guide groove, guide pad leads phase
It is slidedly assemblied in guide groove, realizes rotation stop assembly of the cushion collar in plunger shaft.
The radially extending along plug 14 of groove 144 in the present embodiment in other embodiments can also be in the block of plug
Annular groove is set, while setting is connected to the channel of annular groove and centre bore on block end face, the oil liquid in centre bore is by leading on end face
Road enters in annular groove；Groove can also be fold-line-shaped slot or arc groove.
The specific embodiment two of hydraulic device working cylinder of the invention, hydraulic device working cylinder in the present embodiment with it is above-mentioned
The difference of hydraulic device working cylinder in embodiment one is only that the structure of plug, as shown in Figure 9 and Figure 10, in the present embodiment
Groove is no longer set on plug, and the centre bore 1411 of plug has taper hole section 146, and taper hole section 146 is along plug to block step 111
Direction aperture gradually increase, i.e., taper hole section 146 is gradually increased along bottom hole to the aperture direction size of centre bore 1411, taper hole section
146 formed centre bores 1411 raised-diameter segment, centre bore 1411 close to one end of piston 12 opening by 146 shape of taper hole section
At the internal diameter of the opening of taper hole section 146 is greater than aperture of the inner hole close to one end of plug of cushion collar 13.
In addition, being additionally provided with communicating passage 1441 on plug, the setting open at one end of communicating passage 1441 is in block end face
On 1431, another end opening is arranged on 142 hole wall of through-hole of plug to be connected to the Z chamber 113 of hydraulic device working cylinder.It needs
Illustrating, when to prevent cushion collar 13 and plug block from cooperating, communicating passage 1441 is connected to oil-through hole 15 or oil groove 16 excessively,
The buffering effect for influencing cushion collar 13, oil-through hole 15 and communicating passage 1441 on cushion collar 13 are staggered cloth in the circumferential direction of plug
Set, cushion collar 13 cross oil groove 16 with communicating passage 1441 being radially staggeredly arranged in plug, and 13 rotation stop of cushion collar assembly
In plunger shaft 112, specifically, the guide groove axially extended can be arranged on cushion collar 13, while being arranged in plunger shaft 112
Guide pad, guide groove and guide pad are oriented to the rotation stop for realizing cushion collar 13 in plunger shaft 112 that is slidably matched.
Closing operation process, in the starting of hydraulic device working cylinder, oil liquid can enter communicating passage by centre bore 1411
In 1441, the oil liquid in communicating passage 1441 at the oil liquid of 1431 opening of block end face and raised-diameter segment is right
Cushion collar 13 close to the end face of plug there is impetus to increase promotion of the oil liquid to cushion collar 13 compared with prior art
Power increases the startup power of hydraulic device working cylinder, improves the starting speed of hydraulic device working cylinder.
The centre bore 1411 of plug in the present embodiment has taper hole section 146, and taper hole section 146 constitutes flared section, while structure
At the raised-diameter segment of the centre bore 1411 of plug；In other embodiments, taper hole section can be by the bottom hole along centre bore to aperture
The arcuate socket that direction size gradually increases replaces, and arcuate socket constitutes flared section；In other embodiments, the centre bore of plug can also
Including major diameter section and path section, path section is arranged far from cushion collar, and major diameter section is arranged close to cushion collar, and major diameter section constitutes described
Raised-diameter segment.
Communicating passage 1441 and plug axis in the present embodiment have certain angle, and in other embodiments, connection is logical
Road may include along the radial passage section of plug radially extended and along the axially extending axial passage section of plug, radial passage section
Be connected with axial passage section, and radial passage section it is open at one end be arranged on block end face, one end of axial passage section is opened
On the hole wall in the centrally disposed hole of mouth, to be connected to the Z chamber of hydraulic device working cylinder.
The specific embodiment three of hydraulic device working cylinder of the invention, hydraulic device working cylinder in the present embodiment with it is above-mentioned
The difference of hydraulic device working cylinder in embodiment one is only that the structure of plug, as is illustrated by figs. 11 and 12, in the present embodiment
Plug on groove is no longer set, set on plug there are four connectivity slot 1442, the circumferential direction of four connectivity slots 1442 circumferentially plug
Uniformly distributed, connectivity slot 1442 constitutes the communicating passage in the present embodiment, and connectivity slot 1442 and the cavity wall of plunger shaft 112 are surrounded for oil liquid
The runner flowed through, the setting open at one end of connectivity slot 1442 is on block end face 1432, the outside of another end opening setting plug
On the hole wall of wall surface and through-hole 1421, to be connected to the Z chamber 113 of hydraulic device working cylinder.It should be noted that in the present embodiment
Through-hole 1421 also along the circumferential setting four of plug, to be connected to respectively with four connectivity slots 1442, one of through-hole 1421
It is corresponding close to the axial opening of cylinder body 11 with the Z chamber 113 of cylinder body 11.
1442 slot bottom of connectivity slot in the present embodiment is in the outside for being located at oil-through hole 15 in the radial direction of plug, to prevent
When cushion collar 13 and plug block cooperate, connectivity slot 1442 is connected to oil groove is crossed, and influences the buffering effect of cushion collar 13, cushion collar
Oil groove and connectivity slot excessively on 13 are staggeredly arranged in plug circumferential direction, and 13 rotation stop of cushion collar is assemblied in plunger shaft, specifically,
The guide groove axially extended can be set on cushion collar 13, while guide pad is set in plunger shaft 112, guide groove is led with guide pad
To the rotation stop for realizing cushion collar 13 in plunger shaft 112 that is slidably matched.
Closing operation process, in the starting of hydraulic device working cylinder, oil liquid can enter connectivity slot by centre bore 1412
In 1442, has to cushion collar 13 close to the end face of plug in connectivity slot 1442 in the oil liquid of 1432 opening of block end face and push away
Movement is used, and compared with prior art, is increased oil liquid to the motive force of cushion collar 13, is increased the starting of hydraulic device working cylinder
Power improves the starting speed of hydraulic device working cylinder.
Section of the connectivity slot 1442 in the plane for being parallel to plug radial direction is rectangle in the present embodiment, in other embodiments
Section of the middle connectivity slot in the plane for being parallel to plug radial direction can be the other shapes such as V-arrangement, trapezoidal.
Connectivity slot 1442 in the present embodiment is the straight shape groove axially extending along plug, in other embodiments, connection
Slot can also be for along its axially extending fold-line-shaped slot or arc groove.
The specific embodiment four of hydraulic device working cylinder of the invention, hydraulic device working cylinder in the present embodiment with it is above-mentioned
The difference of hydraulic device working cylinder in embodiment one is only that the structure of plug, as shown in Figure 13 and Figure 14, in the present embodiment
Plug on groove is no longer set, four communicating passages 1443 are distributed along the circumference on plug, one end of communicating passage 1443 is opened
Mouth is arranged on block end face 1433, on the hole wall of the through-hole 1422 of another end opening setting plug, the through-hole in the present embodiment
1422 along plug it is circumferentially uniformly distributed there are four, four through-holes 1422 are arranged in a one-to-one correspondence with four communicating passages 1443 respectively, wherein
One through-hole 1422 is corresponding close to the opening of cylinder body axial direction with the Z chamber of cylinder body, to connect with the Z chamber of hydraulic device working cylinder
It is logical.
Communicating passage 1443 in the present embodiment is in the inside of the slot bottom for being located at oil groove 16 in the radial direction of plug
When preventing cushion collar 13 and plug block from cooperating, communicating passage 1443 is connected to oil-through hole 15, influences the buffering effect of cushion collar 13
Fruit, the oil-through hole 15 on cushion collar 13 are radially staggeredly arranged with communicating passage 1443 in plug, and 13 rotation stop of cushion collar is assembled
In plunger shaft 112, specifically, the guide groove axially extended can be arranged on cushion collar 13, while being arranged in plunger shaft 112
Guide pad, guide groove and guide pad are oriented to the rotation stop for realizing cushion collar 13 in plunger shaft that is slidably matched.
Closing operation process, in the starting of hydraulic device working cylinder, oil liquid can enter communicating passage by through-hole 1422
In 1443, the oil liquid in communicating passage 1443 in 1433 opening of block end face has cushion collar 13 close to the end face of plug
Impetus increases oil liquid to the motive force of cushion collar 13, increases opening for hydraulic device working cylinder compared with prior art
Power improves the starting speed of hydraulic device working cylinder.
In other embodiments, communicating passage is staggeredly arranged in plug circumferential direction with oil groove is crossed, so that communicating passage can edge
The radially expanded certain size of plug；Oil-through hole and communicating passage on cushion collar are staggeredly arranged in the circumferential direction of plug, so that
Communicating passage can be along the radially expanded certain size of plug.
Communicating passage 1443 in the present embodiment is arranged four, and uniformly distributed in plug circumferential direction, in other embodiments, even
The quantity of circulation passage and position can be set as needed, it is preferred that setting three, five, six communicating passages certainly can also
It is set as needed six or more.
The specific embodiment of the plug of hydraulic device working cylinder of the invention, hydraulic device working cylinder in the present embodiment
Plug is identical as the structure of plug described in the specific embodiment of above-mentioned hydraulic device working cylinder, repeats no more.
Claims (8)
1. the plug of hydraulic device working cylinder, including centre bore, the centre bore is for slow on the piston of hydraulic device working cylinder
Axis insertion is rushed, plug also has the block end face that the oil-through hole on cushion collar is blocked when cooperating with cushion collar block；
It is characterized in that the block end face of the plug of the hydraulic device working cylinder is equipped with groove, the groove and the center
Hole is connected；Alternatively,
The plug of the hydraulic device working cylinder is equipped with communicating passage, and the setting open at one end of communicating passage is at the block end
On face, another end opening is arranged on the corresponding wall surface of the plug of hydraulic device working cylinder with the Z chamber with hydraulic device working cylinder
Connection.
2. the plug of hydraulic device working cylinder according to claim 1, characterized in that the groove works along hydraulic device
The plug of cylinder is circumferentially with two or more.
3. the plug of hydraulic device working cylinder according to claim 2, characterized in that each groove is along hydraulic device working cylinder
Plug circumferential direction it is uniformly distributed.
4. the plug of hydraulic device working cylinder according to claim 1-3, characterized in that the centre bore has
Raised-diameter segment, centre bore are used to be formed close to the opening of one end of piston by the raised-diameter segment.
5. the plug of hydraulic device working cylinder according to claim 4, characterized in that the raised-diameter segment includes in
The flared section that the bottom hole in heart hole is gradually increased to aperture direction size.
6. the plug of hydraulic device working cylinder according to claim 5, characterized in that the flared section is taper hole section.
7. hydraulic device working cylinder, including cylinder body and piston；
Plunger shaft is equipped in cylinder body, guiding activity is assemblied in plunger shaft piston along the axial cylinder, and plunger shaft is used for and piston
The inner wall of the corresponding one end in cushion stroke end is equipped with block step, and the end at the end is equipped with plug；
Cushion collar is movably arranged on along the axial cylinder between block step and plug, which is provided with the buffer shaft insertion for piston
Inner hole, be additionally provided with along axially through oil-through hole；
It is characterized in that the plug is the plug of hydraulic device working cylinder described in any one of claims 1-6.
8. hydraulic device working cylinder according to claim 7, characterized in that the radial outer end of the groove is in plug radial direction
The upper outside positioned at oil-through hole, the cushion collar rotation stop are assemblied in plunger shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910346143.0A CN110159610B (en) | 2019-04-26 | 2019-04-26 | Plug of hydraulic device working cylinder and hydraulic device working cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346143.0A CN110159610B (en) | 2019-04-26 | 2019-04-26 | Plug of hydraulic device working cylinder and hydraulic device working cylinder |
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| CN110159610A true CN110159610A (en) | 2019-08-23 |
| CN110159610B CN110159610B (en) | 2020-11-06 |
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| CN206320105U (en) * | 2016-11-22 | 2017-07-11 | 江苏恒立液压股份有限公司 | Small-sized cylinder buffer device |
| CN207349201U (en) * | 2017-10-30 | 2018-05-11 | 厦门汉莱德机械有限公司 | A kind of new-type cylinder buffer mechanism |
| CN108317124A (en) * | 2018-03-11 | 2018-07-24 | 华东交通大学 | A kind of novel high-voltage circuit-breaker hydraulic working cylinder with combined buffer plunger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101963168A (en) * | 2010-10-20 | 2011-02-02 | 小冶精通（天津）液压机械有限公司 | Hydro-cylinder for performing buffering by using floating one-way valve sheet |
| CN102900723A (en) * | 2012-11-16 | 2013-01-30 | 江阴市洪腾机械有限公司 | Front buffering type hydraulic cylinder |
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Also Published As
| Publication number | Publication date |
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| CN110159610B (en) | 2020-11-06 |
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