CN104074738B - Plunger pump and plunger motor and closing-in-prevention forward-packet plunger sliding boot assembly thereof - Google Patents
Plunger pump and plunger motor and closing-in-prevention forward-packet plunger sliding boot assembly thereof Download PDFInfo
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- CN104074738B CN104074738B CN201410309525.3A CN201410309525A CN104074738B CN 104074738 B CN104074738 B CN 104074738B CN 201410309525 A CN201410309525 A CN 201410309525A CN 104074738 B CN104074738 B CN 104074738B
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Abstract
The invention provides a plunger pump and a plunger motor and a closing-in-prevention forward-packet plunger sliding boot assembly thereof. The closing-in-prevention forward-packet plunger sliding boot assembly comprises a plunger and a sliding boot; the plunger comprises a ball head; the sliding boot comprises a ball socket; the ball socket is larger than a half ball; the ball diameter of the ball head is larger than the opening size of an opening of the ball socket; the ball head comprises a retraction section, wherein the radial length of the retraction section is smaller than the opening size of the opening of the ball socket so as to enable the ball head to be inserted into the ball socket; the ball head can rotate in a preset angle relative to the ball socket after being inserted into the ball socket so as to be blocked at the position of the opening of the ball socket. According to the plunger pump and the plunger motor and the closing-in-prevention forward-packet plunger sliding boot assembly thereof, the complex closing-in process is omitted through the retraction section of the ball head and the over-half-ball ball socket and accordingly the production cost is reduced; a user only needs to enable the retraction section of the ball head to be aligned to the opening of the ball socket to be inserted in and then rotates the preset angle to achieve the installation of the ball head and the ball socket; the simple is simple, the assembly is simple, the detachment and the installation are convenient, the use is convenient, the maintenance is convenient, the part pollution is convenient to control, and accordingly the service life is extended.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, more particularly to a kind of plunger displacement pump, piston motor and its a mouthful positive closure post is exempted from
Plug slippery boots assembly.
Background technology
Plunger displacement pump be by multiple plungers in the cylinder bore linear reciprocating motion, to export the hydraulic pump of hydraulic oil；Plunger horse
Up to be by multiple plungers in the cylinder bore linear reciprocating motion, with the hydraulic motor of output torque.Plunger piston slippery boots assembly is hydraulic pressure
The kernel component of pump and hydraulic motor, directly affects the performance of plunger displacement pump and piston motor.
The plunger piston slippery boots assembly is made up of plunger and piston shoes, and the main body of plunger is cylindrical structural, and front end has bulb
Or ball-and-socket；The main body of piston shoes is ladder circle cylindricality, can rub, and be connected by bulb-ball-and-socket with plunger on swash plate, so as to
Hydraulic coupling on plunger is delivered on swash plate.In prior art, plunger and piston shoes are by bottling technique or other modes reality
Existing contact of the ball-and-socket with bulb so that operationally, plunger and piston shoes mutually flexibly can either turn for plunger displacement pump or piston motor
It is dynamic, and can keep not disengaging.Described closing in referred to and deform piston shoes or sliding cylinder extrusion by special tooling so that bulb and
Ball-and-socket is brought into close contact, and plunger and piston shoes can surround centre of sphere opposing oscillatory but can not separate.
As described above, existing plunger piston slippery boots assembly is realized by bottling technique, however, during closing in,
The deformation of piston shoes or plunger is uneven, makes piston shoes or the Internal Spherical Surface of plunger be difficult fully to fit with the spherical outside surface of bulb, causes
Specific contact pressure is high, concentrated wear aggravation.Simultaneously under shock loading and alternate load, the moulding material deformation of closing in is easily made,
The end-play of increase plunger and piston shoes, when serious, plunger and piston shoes can be completely disengaged from, that is, " de- boots " phenomenon occur.
Additionally, typically adopting steel column plug and copper piston shoes in prior art, and component, copper material toughness are formed by bottling technique
It is good but intensity is relatively low, therefore often through bag sphere area is increased improving pulling-out force, but limit while increasing bag sphere area
The increase of plunger and piston shoes pivot angle.
Furthermore, by close up plunger piston slippery boots assembly, plunger and piston shoes it is non-dismountable, whole component to change together, tie up
Repairing property is poor, and maintenance cost is high.And, after closing in, plunger piston slippery boots coordinate inconvenience cleaning at sphere, and Environmental capacity is difficult, and pollution will drop
Low pump, motor performance and service life.
For above-mentioned technical problem, the plunger piston slippery boots assembly for not adopting assembling of closing up is provided in prior art, is below tied
Close accompanying drawing to illustrate two of which.
Refer to Fig. 1 and Fig. 2, Fig. 1 is a kind of structural representation of set-up mode of plunger piston slippery boots assembly in prior art；Figure
2 is the structural representation of plunger piston slippery boots assembly another kind set-up mode in prior art.
As shown in figure 1, the Chinese patent of Patent No. CN101012817 discloses a kind of plunger piston slippery boots assembly, belong to post
The part of plug pump, including plunger 1 ', bulb 2 ' and piston shoes 3 ', piston shoes 3 ' are made up of outer piston shoes 31 ' and interior piston shoes 32 ', interior piston shoes
32 ' are the cylinder that one end is concave spherical surface, and outer piston shoes 31 ' are the cylinder with hole, and endoporus is made up of the face of cylinder and concave spherical surface,
Bulb 2 ' uses thread connection with plunger 1 ', prevents from loosening by check pin；The concave spherical surface of outer piston shoes 31 ' and interior piston shoes 32 ' it is recessed
Sphere is close on the spherical outside surface of bulb 2 '；Outer piston shoes 31 ' and interior piston shoes 32 ' are combined into one by tight fit and tightening pin bank
Body.
As shown in Fig. 2 the Chinese patent of Patent No. CN202187900U discloses a kind of component of plunger displacement pump, one is refered in particular to
Plant plunger piston slippery boots assembly.The plunger 5 ' that the plunger piston slippery boots assembly is included piston shoes body 4 ' and is engaged with piston shoes body 4 ', institute
State piston shoes body 4 ' and be provided with outer spherical cambered surface, 5 ' one end of the plunger is provided with the interior spherical arc for coordinating outer spherical cambered surface, post
Plug 5 ' is coordinated with piston shoes body 4 ' by an internal spline, so that outer spherical cambered surface is fully fitted with interior spherical arc, plunger 5 '
Oscillating motion can be made with respect to piston shoes body 4 '.
In above two prior art, although eliminate the bag ball technique of complexity, but the zero of whole plunger piston slippery boots assembly
Part is more, and its structure is complex, and assembling process is relatively complicated, relatively costly.In addition the ball pivot between plunger and piston shoes connects
Connect non-dismountable, inconvenience is brought to maintenance, and be not easy to carry out Environmental capacity.
Therefore, how to design one kind and exempt from a mouthful positive closure plunger piston slippery boots assembly, to simplify its structure and disassembly process, reduce life
Cost is produced, its performance is improved, is the current technical issues that need to address of those skilled in the art.
The content of the invention
It is an object of the invention to provide one kind exempts from a mouthful positive closure plunger piston slippery boots assembly, its simple structure is easy to dismounting.
It is a further object of the present invention to provide a kind of plunger displacement pump and piston motor, exempt from mouthful positive closure plunger piston slippery boots including above-mentioned
Component, its discharge capacity are larger, using more convenient.
For solving above-mentioned technical problem, the present invention provides one kind and exempts from a mouthful positive closure plunger piston slippery boots assembly, for quantitative plunger
Pump or quantitative plunger motor, including the plunger with bulb and the piston shoes with ball-and-socket, the ball-and-socket is more than hemisphere, the bulb
Sphere diameter more than the ball-and-socket opening bore, and with radical length less than the ball-and-socket opening bore contracting section, so as to
The bulb inserts the ball-and-socket；After inserting the ball-and-socket, the bulb can relative to the ball-and-socket rotate predetermined angular, with every
Gear is at the opening of the ball-and-socket.
The present invention's exempts from a mouthful positive closure plunger piston slippery boots assembly, and the ball-and-socket of piston shoes is set greater than the ball-and-socket of hemisphere, plunger
Bulb has the contracting section less than its sphere diameter, and as the radical length of contracting section is less than the opening bore of ball-and-socket, then plunger can be with its contracting
Bulb is inserted ball-and-socket by the opening of section alignment ball-and-socket；Then so that bulb rotates predetermined angular relative to ball-and-socket, so that contracting section is turned
From the position just to ball-and-socket opening, external diameter is more than into opening of the part of ball-and-socket opening just to ball-and-socket, opening of the barrier in ball-and-socket
Place, and then close the opening of ball-and-socket so that bulb is embedded in ball-and-socket, prevents bulb from deviating from from ball-and-socket, it is ensured that bulb and ball-and-socket
Between ball pivot connection reliability.
It can be seen that, the plunger piston slippery boots assembly (exempting from a mouthful positive closure plunger piston slippery boots assembly) of the present invention, by the contracting section of bulb and
The hemisphere of crossing of ball-and-socket is arranged, and is eliminated the bottling technique of complexity, is reduced production cost；Furthermore, only need to will be the contracting section of bulb right
Insert after quasi- ball-and-socket opening, then rotate the installation that predetermined angular is capable of achieving bulb and ball-and-socket, its simple structure is assembled more
Simply, using more convenient；In addition, compared with the assembling of plunger piston slippery boots is realized in prior art using bottling technique, the present invention
Plunger piston slippery boots assembly adopt dismountable connected mode, be convenient for maintenance, can economically realize single plunger or piston shoes
Replacing；Also due to dismountable connected mode causes the cleaning performance of part more preferable, it is easy to control the pollution of part, Jin Eryan
Long life.
Preferably, along circumferentially cutting its great circle of the bulb, to form the contracting section, whole processing technique is more simple
It is single, and the stability that holding spheroid is easy in sphere cutting is carried out in the circumference equal to sphere diameter, prevent bulb eccentric.
Preferably, the contracting section is symmetrical with regard to the axis of the plunger.Contracting section can be symmetrical with regard to the axis of plunger,
The axis of the axis of plunger alignment piston shoes can be axially inserted into bulb when then assembling, further simplify assembling process,
Ensure assembly precision；Particular, it is important that when contracting section is symmetrical with regard to the axis of plunger, the effectiveness of driving is ensure that,
Avoid the relative motion of bulb Influence from Eccentric plunger and piston shoes.
Preferably, the contracting section is cylindrical or coniform setting.
The processing of cylindric or cone shape structure is more simple, opening phase that can preferably with ball-and-socket during use
Match somebody with somebody, be easy to improve the convenience of dismounting.
Preferably, the opening of the ball-and-socket is stretched out with its inwall, to form the connection coordinated with the intersegmental gap of the contracting
Hole.
Connecting hole can be set at the opening of ball-and-socket, be easy to the access of bulb, it is ensured that bulb is smoothly inserted with its contracting section
Ball-and-socket, improves assembly precision.
Preferably, the aperture of the connecting hole is tapered from outside to inside, and the connecting hole is with the hole wall on the inside of which and the contracting
Intersegmental gap coordinates.
Connecting hole can also be set to tapered hole, so as to the insertion with contracting section, contracting section be done step-by-step with ball-and-socket opening
Connection, and then ensure assembly precision, improve efficiency of assembling.
Preferably, the axial length of the outer rim of the connecting hole to the centre of sphere of the ball-and-socket is less than first predetermined value.
Preferably, the radial distance between the outer rim of the piston shoes of the hole wall and homonymy of the connecting hole is pre- more than second
Definite value.
Pivot angle can also be adjusted by arranging the relative dimensions of ball-and-socket, to increase the pivot angle of the relative ball-and-socket of bulb, and then
The discharge capacity of increase plunger displacement pump and piston motor, can be applicable to the plunger displacement pump and piston motor of huge discharge.
The present invention also provides a kind of plunger displacement pump, and its discharge capacity is fixed, including exempting from a mouthful positive closure plunger described in any of the above-described
Slippery boots assembly.
The present invention also provides a kind of piston motor, and its discharge capacity is fixed, including exempting from a mouthful positive closure post described in any of the above-described
Plug slippery boots assembly.
As the present invention includes exempting from a mouthful positive closure plunger piston slippery boots assembly described in any of the above-described, therefore described in any of the above-described
The technique effect exempted from mouthful produced by positive closure plunger piston slippery boots assembly be applied to the plunger displacement pump and piston motor of the present invention, herein
Repeat no more.
Description of the drawings
Fig. 1 is a kind of structural representation of set-up mode of plunger piston slippery boots assembly in prior art；
Fig. 2 is the structural representation of plunger piston slippery boots assembly another kind set-up mode in prior art；
Fig. 3 is a kind of cross-sectional view of the plunger piston slippery boots assembly provided by the present invention in specific embodiment；
Fig. 4 is view when plunger piston slippery boots assembly shown in Fig. 3 is dismounted；
Fig. 5 is a kind of positive structure schematic of set-up mode of plunger provided by the present invention；
Fig. 6 is a kind of cross-sectional view of set-up mode of piston shoes provided by the present invention.
In Fig. 1-2：
1 ' plunger, 2 ' bulbs, 3 ' piston shoes, 31 ' outer piston shoes, piston shoes, 4 ' piston shoes bodies, 5 ' plungers in 32 '
In Fig. 3-6：
1 bulb, 11 contracting sections, 2 plungers, 3 ball-and-sockets, 31 connecting holes, 4 piston shoes
Specific embodiment
The core of the present invention is to provide one kind and exempts from a mouthful positive closure plunger piston slippery boots assembly, and its simple structure is easy to dismounting.
Another core of the present invention is to provide a kind of plunger displacement pump and piston motor, exempts from mouthful positive closure plunger piston slippery boots including above-mentioned
Component, its discharge capacity are larger, using more convenient.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Refer to Fig. 3 and Fig. 4, Fig. 3 is a kind of plunger piston slippery boots assembly provided by the present invention cuing open in specific embodiment
Face structural representation；Fig. 4 is view when plunger piston slippery boots assembly shown in Fig. 3 is dismounted.
The present invention provides one kind and exempts from a mouthful positive closure plunger piston slippery boots assembly, and including plunger 2 and piston shoes 4, plunger 2 is provided with bulb 1,
Piston shoes 4 are provided with ball-and-socket 3, and plunger 2 inserts the ball-and-socket 3 of piston shoes 4 with its bulb 1, to form ball pivot connection；Plunger 2 can be slided relatively
Boots 4 are moved, to complete the relevant action of oil suction and force feed.In the present invention, ball-and-socket 3 is that more than half ball-and-sockets, i.e. ball-and-socket 3 are more than hemisphere,
The opening bore of ball-and-socket 3 is less than its sphere diameter；Opening bore of the sphere diameter of bulb 1 more than ball-and-socket 3, bulb 1 also have radical length
Less than the contracting section 11 of the opening bore of ball-and-socket 3, bulb 1 is inserted ball-and-socket 3 by the opening so as to bulb 1 with contracting section 11 just to ball-and-socket 3
It is interior；After bulb 1 inserts ball-and-socket 3, can the relative rotation of ball-and-socket 3 predetermined angular, so as to external diameter is open bore more than ball-and-socket 3
Opening of the part just to ball-and-socket 3 so that 1 barrier of bulb at the opening of ball-and-socket 3, to block the opening of ball-and-socket 3, by bulb 1
It is embedded in ball-and-socket 3, realizes the connection of bulb 1 and ball-and-socket 3, prevent bulb 1 to be sliding out ball-and-socket 3.
It should be noted that in this area, arranging ball-and-socket 3 to arrange bulb 1, piston shoes 4 on plunger 2, then with piston shoes 4
The bulb 1 of the parcel plunger 2 of ball-and-socket 3 realizes that the mode that plunger 2 is connected with piston shoes 4 is referred to as " positive closure ", correspondingly, shape after positive closure combination
Into plunger piston slippery boots assembly be positive closure plunger piston slippery boots assembly, a mouthful positive closure plunger piston slippery boots assembly of exempting from of the present invention as can
Save closing in, and using the plunger piston slippery boots assembly of positive closure structural grouping；If it can be deduced that on plunger 2 arrange ball-and-socket 3,
Piston shoes 4 arrange bulb 1, are then referred to as " anti-package " in the way of the bulb 1 of the parcel piston shoes 4 of ball-and-socket 3 of plunger 2 realizes both connections
Or " ladle-to-ladle ", the plunger piston slippery boots assembly that anti-package mode is combined is adopted for anti-package plunger piston slippery boots assembly.
During installation, then bulb 1 is inwardly inserted into ball-and-socket 3, as shown in Figure 4 with its opening of contracting section 11 just to ball-and-socket 3；When
After the insertion ball-and-socket 3 of bulb 1, bulb 1 can rotate predetermined angular relative to ball-and-socket 3, so that contracting section 11 to be left the opening of ball-and-socket 3,
Bulb 1 is more than opening of the part of the opening bore of ball-and-socket 3 just to ball-and-socket 3 with its external diameter, to prevent bulb 1 to be sliding out ball-and-socket 3,
Realize that bulb 1 is hinged with ball-and-socket 3, as shown in Figure 3.
When needing dismounting, bulb 1 is rotated backward so that opening of the contracting section 11 of bulb 1 just to ball-and-socket 3, outside pull ball
1, you can bulb 1 is extracted into ball-and-socket 3, the disengaging of bulb 1 and ball-and-socket 3 is realized, to release the connection of plunger 2 and piston shoes 4；Work as post
After plug 2 is separated with piston shoes 4, can be individually replaced with both, or cleaning etc., improve the maintainability of whole component.
In prior art, bulb 1 is disposed as complete spherical structure, the i.e. external diameter of bulb 1 equal to its sphere diameter, due to ball
Between 1 and ball-and-socket 3, there is certain fit-up gap, bulb 1 can be inserted in ball-and-socket 3, then realized by bottling technique
The connection of bulb 1 and ball-and-socket 3, to connect plunger 2 and piston shoes 4.But, as bottling technique is complex, can also affect whole
Maintenance of individual plunger piston slippery boots assembly etc., the present invention arrange contracting section 11 of one section of external diameter less than its sphere diameter on bulb 1, and with contracting section
11 openings just to ball-and-socket 3, to insert in ball-and-socket 3；Then bulb 1 is rotated, contracting section 11 is left into the opening just to ball-and-socket 3, with
Just with the part more than the opening bore of ball-and-socket 3 just to ball-and-socket 3, bulb 1 is embedded in ball-and-socket 3 bulb 1, realizes 2 He of plunger
The connection of piston shoes 4.
It can be seen that, the plunger piston slippery boots assembly of the present invention, due to the setting of contracting section 11 on bulb 1, and more than half chous of ball-and-socket 3
Structure, realizes the connection of plunger 2 and piston shoes 4, eliminates the bottling technique and equipment of complexity, reduces cost, improve production
Efficiency；Whole installation process only needs contracting section 11 is aligned after the opening of ball-and-socket 3 and inserts, and then goes to bulb 1, its structure letter
Single, it is convenient to assemble；Bulb 1 is to be detachably connected with the connection of ball-and-socket 3, rotates backward bulb 1 and turns to contracting section 11 just to ball
The opening of nest 3, you can bulb 1 is extracted ball-and-socket 3, realizes the disengaging of plunger 2 and piston shoes 4, economically to realize single plunger 2
Or the replacing of piston shoes 4, improve the maintainability of whole component；Further, since bulb 1 is adopted with ball-and-socket 3 removably connecting
Connect, be easy to part to be cleaned, it is easy to carry out Environmental capacity, prevent the spot at 4 mating surface of plunger 2 and piston shoes from reducing plunger displacement pump
With the performance and service life of piston motor.
As ball-and-socket 3 is the more than half ball-and-sockets more than hemisphere, therefore the opening bore of ball-and-socket 3 is certainly less than its sphere diameter, bulb 1 with
Ball-and-socket 3 coordinates for gap, and the sphere diameter of bulb 1 is slightly less than the sphere diameter of ball-and-socket 3, then when bulb 1 rotates predetermined angular relative to ball-and-socket 3
When, generally to be equal to opening of the part of sphere diameter just to ball-and-socket 3, so that bulb 1 is snapped in ball-and-socket 3.When contracting section 11 is set to
Deng external diameter structure when, in bulb 1 during the rotation of ball-and-socket 3, the certain angle of opening inclination of the relative ball-and-socket 3 of contracting section 11
Degree, now contracting section 11 is in the length increase just to 3 opening direction of ball-and-socket, it is also possible to prevent bulb 1 from slipping from ball-and-socket 3；Contracting section
11 it can also be provided that non-equant structure, as long as opening bore of the maximum outside diameter of contracting section 11 less than ball-and-socket 3, you can by bulb
In 1 insertion ball-and-socket 3；When rotating bulb 1, as long as being just more than ball-and-socket 3 to the length of 3 opening direction of ball-and-socket after contracting section 11 is inclined
Opening bore.That is, the inclination of 2 relative piston shoes 4 of plunger according to plunger displacement pump and the demand of piston motor, can be arranged
Angle, the angle of inclination can be inclination maximum, or less than certain particular value of inclination maximum, to meet different displacements
The use demand of plunger displacement pump and piston motor.
In detail, can the section of the only centre of sphere cut the sphere of bulb 1, the section of formation and the opposite face of bulb 1 it
Between radical length certainly less than sphere diameter, and cause opening bore of the radical length less than ball-and-socket 3, then section face corresponding thereto
Between spheroid be collectively forming contracting section 11；The section can be plane or curved surface；At this point it is possible to the opening of ball-and-socket 3 is arranged
It is the structure coordinated with contracting section 11.
Certainly, in the case of each several part material identical of bulb 1, one side is carried out to bulb 1 and is cut to contracting section 11
Mode be easily caused that bulb 1 is eccentric, affect the reliability for using.Therefore, it can circumferentially cutting its great circle along bulb 1, with
So that the radical length of the part is less than sphere diameter, contracting section 11 is formed；Obviously, during circumferentially cutting bulb 1, easily keep bulb 1
Structural stability, it is to avoid occur eccentric.
It is contemplated that can also be recessed radially inward by the sphere at 1 great circle of bulb, to form contracting section 11, or adopt
Bulb 1 is processed with other similar fashions.
It is a kind of positive structure schematic of set-up mode of plunger provided by the present invention incorporated by reference to Fig. 5 and Fig. 6, Fig. 5；Fig. 6
For a kind of cross-sectional view of set-up mode of piston shoes provided by the present invention.
Further, contracting section 11 can be symmetrical with regard to the axis of plunger 2, i.e., contracting section 11 is coaxially disposed with plunger 2.Contracting section 11
When being coaxially disposed with plunger 2, axis that can be by the axis of plunger 2 just to piston shoes 4, you can realize opening for contracting section 11 and ball-and-socket 3
Mouthful align, to insert bulb 1, it is more convenient to dismount, and is easy to improve connection precision.Furthermore, contracting section 11 is with regard to plunger 2 pairs
Claim, can prevent bulb 1 from occurring in 3 interior rotation of ball-and-socket eccentric, improve the stability and peace of 4 relative motion of plunger 2 and piston shoes
Quan Xing, it is to avoid motion locking occur, realize the sustainable rotation of bulb 1 and ball-and-socket 3.
Further, contracting section 11 may be arranged as cylindric, axially bearing of trend, and the external diameter of contracting section 11 is equal,
Its processing is more convenient, less to the processing capacity of bulb 1, can keep the structural integrity of bulb 1 as far as possible, reduces to bulb
1 impact.
It is contemplated that contracting section 11 may be arranged as coniform, or the structure such as prism, it is also possible to be set to other and do not advise
Structure then, if ensure that its maximum outside diameter less than ball-and-socket 3 opening bore, be easy to bulb 1 insertion ball-and-socket 3, while not
Bulb 1 is affected to rotate relative to ball-and-socket 3.
Further, the opening of ball-and-socket 3 can also arrange connecting hole 31, and the opening of ball-and-socket 3 is stretched out with its inwall, shape
Into connecting hole 31, so that connecting hole 31 can be coordinated with 11 gap of contracting section, then when contracting section 11 is just to connecting hole 31, connecting hole 31
Pre-determined bit can be carried out to contracting section 11 with its inwall, so that contracting section 11 rapidly and accurately inserts connecting hole 31, and then cause whole ball
In 1 insertion ball-and-socket 3, as shown in Figure 4.
Further, to could be arranged to tapered hole, i.e. its aperture tapered in direction from outside to inside for connecting hole 31, on the inside of which
Hole wall can be coordinated with 11 gap of contracting section.On the one hand, when connecting hole 31 adopts tapered hole, can be in before contracting section 11 for bulb 1
The spherical part at end provides certain installing space, is easy to the access of contracting section 11；On the other hand, the aperture of connecting hole 31 is gradually contracted
It is little, so that contracting section 11 is gradually inserted connecting hole 31, and then insert in ball-and-socket 3, improve efficiency of assembling and precision.
Further, connecting hole 31 may be arranged as with contracting section 11 coordinate shape, so as to contracting section 11 outer wall gradually
Near the hole wall of connecting hole 31, so as to realize that gap coordinates, assembly precision is improved.When contracting section 11 is set to cylindric, connection
Hole 31 is the cylindrical hole with cylindrical fit, by that analogy.
It will be understood by those skilled in the art that connecting hole 31 can also be not provided with, and the opening of ball-and-socket 3 is set to
The bore that can coordinate with 11 gap of contracting section, in order to the insertion of contracting section 11, and the opening bore of ball-and-socket 3 is more than contracting section not too much
11 external diameter, to ensure connection reliability, prevents bulb 1 from deviating from.
With the centre of sphere of bulb 1 or ball-and-socket 3 as reference inside and outside as herein described, it is interior near the direction of the centre of sphere, away from the centre of sphere
Direction be outer.
Can be combined with Fig. 3-Fig. 6 to be described in detail the use process of the plunger piston slippery boots assembly of the present invention.
The sphere diameter for defining bulb 1 is D1, and the sphere diameter of ball-and-socket 3 is D2, then D1 is less than D2, so that bulb 1 is matched somebody with somebody with 3 gap of ball-and-socket
Close；The external diameter for defining the contracting section 11 of bulb 1 is D3, and the opening bore of ball-and-socket 3 is D4, then D3 is less than D4, and D3 is less than D1, such as schemes
Shown in 5 and Fig. 6.
As α, be connected with plunger 2 external diameter of part of bulb 1 is D5 to the angle rotated relative to piston shoes 4 with plunger 2, connecting hole
The axial length of 31 outer rim to the centre of sphere of ball-and-socket 3 be L, the footpath between the outer rim of the piston shoes 4 of the hole wall and homonymy of connecting hole 31
It is H to distance；From geometrical analysiss, the pivot angle α between plunger 2 and piston shoes 4 by plunger 2 D5 and piston shoes 4 L, H size
Determine, D5 and L is less, and pivot angle α is bigger.Connect with 2 main part of plunger as D5 directly affects the intensity of plunger 2 and bulb 1
The reliability for connecing, it is impossible to too little, generally should be arranged within the specific limits, can refer to prior art setting；As the application is not required to
Close up, in the case where D5 is constant, pivot angle α can be increased by H, the reduction L in appropriate increase piston shoes 4, now will not
Reduce the intensity of whole component.
More specifically, L can be less than first predetermined value, to reduce the constraint that ball-and-socket 3 is swung to bulb 1, increase pivot angle
α, to increase the stroke that plunger 2 moves back and forth a circle, and then increases the discharge capacity of plunger displacement pump and piston motor, it is adaptable to huge discharge
Plunger displacement pump and piston motor.
Value at the same time it can also arrange H is larger than second predetermined value, so that the ball-and-socket 3 of piston shoes 4 has higher pulling
, that is, there is " de- boots " phenomenon in power, it is to avoid plunger 2 deviates from piston shoes 4.
The first predetermined value and second predetermined value are configured according to the use demand of plunger displacement pump and piston motor, so as to
L and H cooperate, common adjustment pivot angle α, it is adaptable to the plunger displacement pump and piston motor of different displacements.
It will be understood by those skilled in the art that the value of L is difficult too small, the company of bulb 1 and ball-and-socket 3 is otherwise easily affected
Connect reliability；In addition, limited by installing space, the value of H be not easy to it is excessive, as long as ensure that the reliable pulling-out force of offer i.e.
Can.
The present invention provides a kind of plunger displacement pump, using exempting from a mouthful positive closure plunger piston slippery boots assembly, and its post described in any of the above-described
Fill in and fix with the angle of inclination of piston shoes, therefore its discharge capacity is fixed, and is quantitative plunger pump.
The present invention also provides a kind of piston motor, using exempting from a mouthful positive closure plunger piston slippery boots assembly described in any of the above-described, and
The angle of inclination of its plunger and piston shoes is fixed, therefore its discharge capacity is fixed, and is quantitative plunger motor.
It should be noted that plunger displacement pump, piston motor are complex, a mouthful positive closure plunger piston slippery boots assembly is only exempted from herein to which
Illustrate, other parts refer to prior art, here is omitted.
To plunger displacement pump provided by the present invention, piston motor and its exempt from a mouthful positive closure plunger piston slippery boots assembly and carried out in detail above
It is thin to introduce.Specific case used herein is set forth to the principle of the present invention and embodiment, and above example is said
The bright core concept for being only intended to help understand the present invention.It should be pointed out that for those skilled in the art,
Under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and modify
Fall in the protection domain of the claims in the present invention.
Claims (8)
1. one kind exempts from a mouthful positive closure plunger piston slippery boots assembly, for quantitative plunger pump or quantitative plunger motor, including with bulb (1)
Plunger (2) and have ball-and-socket (3) piston shoes (4), it is characterised in that described ball-and-socket (3) be more than hemisphere；Bulb (1)
Opening bore of the sphere diameter more than the ball-and-socket (3), and there is contracting section of the radical length less than the opening bore of the ball-and-socket (3)
(11), so that the bulb (1) inserts ball-and-socket (3)；After inserting the ball-and-socket (3), bulb (1) can be relatively described
Ball-and-socket (3) rotates predetermined angular, with barrier at the opening of the ball-and-socket (3)；Along the bulb (1) circumferentially cutting, which is big
Circle, to be formed contracting section (11), contracting section (11) are symmetrical with regard to the axis of the plunger (2).
2. a mouthful positive closure plunger piston slippery boots assembly is exempted from as claimed in claim 1, it is characterised in that contracting section (11) are cylindrical
Or coniform setting.
3. a mouthful positive closure plunger piston slippery boots assembly is exempted from as described in any one of claim 1-2, it is characterised in that ball-and-socket (3)
Opening stretched out with its inwall, with formed with contracting section (11) gap cooperation connecting hole (31).
4. a mouthful positive closure plunger piston slippery boots assembly is exempted from as claimed in claim 3, it is characterised in that the aperture of connecting hole (31)
Tapered from outside to inside, connecting hole (31) are coordinated with contracting section (11) gap with the hole wall on the inside of which.
5. a mouthful positive closure plunger piston slippery boots assembly is exempted from as claimed in claim 3, it is characterised in that the outer rim of connecting hole (31)
Axial length (L) to the centre of sphere of the ball-and-socket (3) is less than first predetermined value.
6. a mouthful positive closure plunger piston slippery boots assembly is exempted from as claimed in claim 5, it is characterised in that the hole wall of connecting hole (31)
And the radial distance (H) between the outer rim of the piston shoes (4) of homonymy is more than second predetermined value.
7. a kind of plunger displacement pump, its discharge capacity are fixed, it is characterised in that including exempting from mouth described in any one of the claims 1-6
Positive closure plunger piston slippery boots assembly.
8. a kind of piston motor, its discharge capacity are fixed, it is characterised in that including exempting from described in any one of the claims 1-6
Mouth positive closure plunger piston slippery boots assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309525.3A CN104074738B (en) | 2014-06-30 | 2014-06-30 | Plunger pump and plunger motor and closing-in-prevention forward-packet plunger sliding boot assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309525.3A CN104074738B (en) | 2014-06-30 | 2014-06-30 | Plunger pump and plunger motor and closing-in-prevention forward-packet plunger sliding boot assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074738A CN104074738A (en) | 2014-10-01 |
| CN104074738B true CN104074738B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410309525.3A Active CN104074738B (en) | 2014-06-30 | 2014-06-30 | Plunger pump and plunger motor and closing-in-prevention forward-packet plunger sliding boot assembly thereof |
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| CN (1) | CN104074738B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150398A (en) * | 2016-12-05 | 2018-06-12 | 江苏汉力士液压制造有限公司 | The interchangeable swash plate of ball-and-socket |
| CN106694712A (en) * | 2016-12-16 | 2017-05-24 | 内蒙古机集团瑞特精密工模具有限公司 | Special die for closing double-end spherical hinge ball pin shell |
| CN108167161A (en) * | 2017-12-22 | 2018-06-15 | 重庆广林机械有限公司 | A kind of plunger |
| CN108953135A (en) * | 2018-07-17 | 2018-12-07 | 陈南南 | A kind of plunger and plunger pump |
| CN110107447B (en) * | 2019-06-24 | 2024-03-26 | 杭州力龙液压有限公司 | High-low speed switching device, hydraulic motor and excavator |
| CN110725783B (en) * | 2019-11-06 | 2022-04-12 | 四川航天烽火伺服控制技术有限公司 | Plunger pump and plunger piston shoe assembly thereof |
| CN113027669A (en) * | 2021-05-01 | 2021-06-25 | 金乡县恒海液压机械有限公司 | Spherical pair of output shaft spherical recess of inclined shaft type plunger motor and plunger ball head and manufacturing method thereof |
| CN114109757A (en) * | 2021-12-20 | 2022-03-01 | 赛克思液压科技股份有限公司 | Motion mechanism of small-displacement high-pressure high-rotation-speed oblique-shaft type quantitative motor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2040930A5 (en) * | 1969-04-21 | 1971-01-22 | Peugeot & Renault | |
| DE2307641A1 (en) * | 1973-02-16 | 1974-08-22 | Bosch Gmbh Robert | BALL JOINT |
| JPS62218664A (en) * | 1986-03-18 | 1987-09-26 | Honda Motor Co Ltd | Swash plate type hydraulic device |
| US5114261A (en) * | 1989-07-31 | 1992-05-19 | Honda Giken Kogyo Kabushiki Kaisha | Swashplate type hydraulic device having a ball joint connection |
| JPH0364672A (en) * | 1989-07-31 | 1991-03-20 | Honda Motor Co Ltd | Swash plate type hydraulic device |
| DE4214765A1 (en) * | 1992-05-04 | 1993-11-11 | Sachsenhydraulik Gmbh | Piston-slipper connection for axial piston swashplate pump - uses ball with flattened surfaces attached to neck of slipper |
| DE4429053C1 (en) * | 1994-08-16 | 1995-11-02 | Brueninghaus Hydromatik Gmbh | Ball head to support piston of hydrostatic piston machine on lifting body |
| CN101979879A (en) * | 2010-10-20 | 2011-02-23 | 江苏欧盛液压科技有限公司 | Novel plunger sliding shoe component |
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2014
- 2014-06-30 CN CN201410309525.3A patent/CN104074738B/en active Active
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| CN104074738A (en) | 2014-10-01 |
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