CN217481465U - Hydraulic pump and hydraulic motor - Google Patents
Hydraulic pump and hydraulic motor Download PDFInfo
- Publication number
- CN217481465U CN217481465U CN202221138021.6U CN202221138021U CN217481465U CN 217481465 U CN217481465 U CN 217481465U CN 202221138021 U CN202221138021 U CN 202221138021U CN 217481465 U CN217481465 U CN 217481465U
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- plunger
- cylinder body
- ball socket
- ball
- shoe
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- 238000003860 storage Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 66
- 238000009826 distribution Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a hydraulic pressure technical field especially relates to a hydraulic pump and hydraulic motor. The hydraulic pump and the hydraulic motor both comprise a shell, a cylinder body, a plunger piston shoe assembly, a limiting structure and a driving shaft, wherein the cylinder body is arranged in the shell; the plunger piston shoe assembly comprises a plunger and a piston shoe, the plunger is arranged in the cylinder body, an oil cavity is arranged between the plunger and the cylinder body, the cylinder body is provided with the plunger capable of sliding in a reciprocating manner, one of the plunger and the piston shoe is provided with a ball socket, and the other plunger and the piston shoe are provided with a ball head which extends into the ball socket; the limiting structure is detachably arranged in the ball socket and can limit the ball head to move along the axial direction of the sliding boot; the driving shaft penetrates through the cylinder body and can drive the cylinder body to rotate. The limiting structure is convenient to disassemble, and can be disassembled and replaced when the sliding shoe copper layer is seriously abraded, so that the service life of the pump or the motor is prolonged.
Description
Technical Field
The utility model relates to a hydraulic pressure technical field especially relates to a hydraulic pump and hydraulic motor.
Background
The prior art plunger pump or hydraulic motor is generally provided with a plunger and a slipper, wherein the slipper has a ball-and-socket structure, and the plunger has a ball-and-socket structure, when the slipper is made of copper, the copper slipper is easy to slip, so that the product reliability of the plunger pump or hydraulic motor is poor, and the failure rate is high. Therefore, in the prior art, the plunger and the sliding shoe are improved, the sliding shoe is provided with a ball head structure, the plunger is provided with a ball socket structure, the plunger and the sliding shoe are both made of steel, but if any one of the plunger and the sliding shoe is damaged, the plunger and the sliding shoe need to be replaced simultaneously, and the maintenance and replacement cost is increased.
Therefore, a hydraulic pump is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic pump and hydraulic motor can dismantle the separation with the two after arbitrary damage in plunger and piston shoe two, changes the part of damage to reduce the cost that the maintenance was changed.
To achieve the purpose, the utility model adopts the following technical proposal:
a hydraulic pump, comprising:
a housing;
a cylinder disposed within the housing;
the plunger and the sliding shoe are provided with a ball socket and a ball head respectively, and the ball head extends into the ball socket;
the limiting structure is detachably arranged in the ball socket and can prevent the ball head from being separated from the ball socket; and the driving shaft penetrates through the cylinder body and can drive the cylinder body to rotate.
As an optimal technical scheme of above-mentioned hydraulic pump, limit structure includes the spacing ring, the inside wall circumference of ball socket is provided with the holding tank, spacing ring detachably set up in the holding tank, the internal diameter of spacing ring is less than the diameter of bulb.
As a preferred technical scheme of the above hydraulic pump, the cross section of the limiting ring is circular, and the depth of the accommodating groove is greater than or equal to one half of the diameter of the cross section of the limiting ring.
As a preferred technical scheme of above-mentioned hydraulic pump, the spacing ring setting is buckled by the steel wire and is formed, the spacing ring has the breach.
In a preferred embodiment of the hydraulic pump, the shoe is provided with a first oil passage hole and a second oil passage hole in an axial direction, the first oil passage hole and the second oil passage hole are coaxial and communicate with each other, a diameter of the first oil passage hole is larger than a diameter of the second oil passage hole, and a length of the first oil passage hole is larger than a length of the second oil passage hole.
As a preferable technical scheme of the hydraulic pump, a storage groove is circumferentially arranged on the outer side wall of the plunger.
A hydraulic motor, comprising:
a housing;
a cylinder disposed within the housing; shell body
The plunger piston shoe assembly comprises a plunger piston and a piston shoe, the plunger piston is arranged in the cylinder body in a reciprocating sliding mode, an oil cavity is arranged between the plunger piston and the cylinder body, one of the plunger piston and the piston shoe is provided with a ball socket, the other one of the plunger piston and the piston shoe is provided with a ball head, and the ball head extends into the ball socket;
the limiting structure is detachably arranged in the ball socket and can prevent the ball head from being separated from the ball socket; and the driving shaft penetrates through the cylinder body and can drive the cylinder body to rotate.
As an optimal technical scheme of the above hydraulic motor, the limiting structure includes a limiting ring, an accommodating groove is circumferentially arranged on the inner side wall of the ball socket, the limiting ring is detachably arranged in the accommodating groove, and the inner diameter of the limiting ring is smaller than the diameter of the ball head.
As a preferable technical solution of the above hydraulic motor, the cross section of the limit ring is circular, and the groove depth of the accommodating groove is greater than or equal to one half of the diameter of the cross section of the limit ring.
As a preferred technical scheme of the above hydraulic motor, the limiting ring is formed by bending a steel wire, and the limiting ring has a notch.
As a preferable mode of the hydraulic motor, the shoe is provided with a first oil passage hole and a second oil passage hole in an axial direction, the first oil passage hole and the second oil passage hole are coaxial and communicate with each other, a diameter of the first oil passage hole is larger than a diameter of the second oil passage hole, and a length of the first oil passage hole is larger than a length of the second oil passage hole.
As a preferable technical solution of the hydraulic motor, a storage groove is circumferentially provided on an outer side wall of the plunger.
The utility model discloses beneficial effect:
because limit structure can detachably set up in the ball socket, can restrict the axis displacement of the piston shoes that are provided with the bulb like this, prevent that piston shoes and plunger from breaking away from, when needing to be changed piston shoes, can demolish limit structure that can dismantle from the ball socket, and then separate piston shoes and plunger, can realize dismantling under the prerequisite of not damaging piston shoes and plunger like this. Then the sliding shoes or the plunger are replaced according to the requirement, compared with the prior art, the structure can save the cost of the plunger sliding shoe assembly during maintenance and replacement. The limiting structure is convenient to disassemble, and can be disassembled and replaced when the sliding shoe copper layer is seriously abraded, so that the service life of a hydraulic pump or a hydraulic motor is prolonged. Due to the arrangement of the limiting structure, the rotating angle of the sliding shoe can be increased, so that the inclination angle of the separated plunger is increased, and the displacement of the hydraulic pump or the hydraulic motor can be larger under the same structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hydraulic pump according to an embodiment of the present invention;
fig. 2 is a schematic view of a connection relationship between a slipper and a plunger according to an embodiment of the present invention;
fig. 3 is a schematic view of a limiting structure according to an embodiment of the present invention.
In the figure:
1. a housing; 11. an end cap; 12. a housing; 2. a cylinder body; 3. a plunger; 31. a ball socket; 32. a storage tank; 4. a slipper; 41. a ball head; 42. a first oil passage; 43. a second oil through hole; 5. a limiting structure; 51. a notch; 6. a drive shaft; 7. a spline; 8. an oil distribution disc; 9. a swash plate; 10. and (5) a bearing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The piston type pump or the piston type motor structure in the prior art comprises a piston and a piston shoe, wherein the piston and the piston shoe are in rotary connection through a ball head and a ball socket, but the connection between the ball head and the ball socket is not detachable, and when the piston shoe is worn, the piston and the piston shoe need to be replaced simultaneously, so that the replacement and maintenance cost is increased.
Example one
In order to solve the above problems, the present embodiment provides a hydraulic pump, which can be disassembled to replace the damaged structure after any one of the plunger and the sliding shoe is damaged, so that the plunger and the sliding shoe can be used continuously without damage, and the cost for repairing and replacing the plunger and the sliding shoe is saved.
As shown in fig. 1 and 2, the hydraulic pump includes a housing 1, a cylinder block 2, a plunger shoe assembly, a limiting structure 5 and a driving shaft 6, wherein the cylinder block 2, the plunger shoe assembly and the limiting structure 5 are all disposed in a cavity formed by the housing 1.
The plunger piston shoe assembly comprises a plunger 3 and a piston shoe 4, the plunger 3 is arranged in the cylinder body 2 and can slide in the cylinder body 2 in a reciprocating mode, an oil cavity is formed between the plunger 3 and the cylinder body 2, one of the plunger 3 and the piston shoe 4 is provided with a ball socket 31, the other plunger 3 and the piston shoe 4 is provided with a ball head 41, and the ball head 41 extends into the ball socket 31 to achieve rotary connection between the plunger 3 and the piston shoe 4; the limiting structure 5 is detachably arranged in the ball socket 31 and can limit the ball head 41 to move along the axial direction of the sliding shoe 4; the driving shaft 6 passes through the cylinder block 2 and can rotate the cylinder block 2.
Because the limiting structure 5 can be detachably arranged in the ball socket 31, the axial displacement of the sliding shoe 4 provided with the ball head 41 can be limited, the sliding shoe 4 is prevented from being separated from the plunger 3, when the sliding shoe 4 needs to be replaced, the limiting structure 5 can be detachably removed from the ball socket 31, then the sliding shoe 4 is separated from the plunger 3, and the sliding shoe 4 and the plunger 3 can be detached without damaging the sliding shoe 4 and the plunger 3. Then according to the sliding shoe 4 replacement, compared with the prior art, the structure can save the cost of the plunger sliding shoe assembly during maintenance and replacement. Limiting structure 5 assembles simply, and it is convenient to dismantle, can dismantle the change when running into 4 serious circumstances of wearing and tearing of piston shoes, prolongs the life of pump. Due to the arrangement of the limiting structure 5, the rotation angle of the sliding shoe 4 can be increased, so that the inclination angle of the separated plunger 3 is increased, and the displacement of the hydraulic pump can be larger under the same structure.
As shown in fig. 2, optionally, the plunger 3 is provided with a ball socket 31, a storage groove 32 is circumferentially provided on the outer side wall of the plunger 3, the storage groove 32 can contain part of the lubricating oil during the relative movement of the plunger 3 and the cylinder 2, and the storage groove 32 can contain impurities which easily wear the outer surface of the plunger 3 and the inner surface of the cylinder 2, and prevent the plunger 3 and the cylinder 2 from rubbing with the impurities to damage the surfaces. The ball socket 31 of the plunger 3 is provided with a receiving groove, and the receiving groove is used for installing the limiting structure 5.
The slipper 4 is provided with a ball 41, and the ball 41 is matched with the ball socket 31 to realize the rotary connection of the slipper 4 and the plunger 3. The shoe 4 is provided with a first oil passing hole 42 and a second oil passing hole 43 in the axial direction, the first oil passing hole 42 and the second oil passing hole 43 are coaxial and communicate with each other, the diameter of the first oil passing hole 42 is larger than that of the second oil passing hole 43, and the length of the first oil passing hole 42 is larger than that of the second oil passing hole 43. Thus, the first oil passage hole 42 actually serves to reduce the weight, and the weight of the entire shoe 4 can be reduced.
Optionally, in this embodiment, the limiting structure 5 includes a limiting ring, the limiting ring is detachably disposed in the receiving groove, and the inner diameter of the limiting ring is smaller than the diameter of the ball 41, so that the ball 41 and the socket 31 can be prevented from being separated from each other. When the sliding shoe 4 and the plunger 3 are disassembled, the limiting ring is directly disassembled, and the sliding shoe 4 and the plunger 3 can be separated.
Optionally, in order to improve the stability of the stop collar mounted at the ball socket 31 and prevent the hydraulic pump from being naturally separated from the ball socket 31 during the working process, the groove depth of the receiving groove is greater than or equal to one half of the diameter of the cross section of the stop collar, so that the stability of connection between the stop collar and the receiving groove can be improved.
Further, in order to facilitate the manufacture of the stop collar, the stop collar is formed by bending a steel wire with certain strength in the embodiment. In order to facilitate the disassembly of the limiting ring by a tool and the assembly of the limiting ring, as shown in fig. 3, in this embodiment, the limiting ring is provided with a notch 51, that is, the limiting ring is not a complete annular structure, so that during the assembly, the limiting ring can generate a certain deformation to adapt to the diameter of the accommodating groove during the assembly, and during the disassembly, one end of the limiting ring can be pulled directly from the notch 51 of the limiting ring to be disassembled.
With continued reference to fig. 1, the cylinder block 2 is optionally connected to the drive shaft 6 by splines 7. This connection enables the cylinder 2 to rotate with the drive shaft 6, which forces the plunger 3 to reciprocate within the cylinder 2.
The hydraulic pump further comprises an oil distribution disc 8, wherein the oil distribution disc 8 is arranged at one end of the cylinder body 2, and the oil distribution disc 8 is communicated with the cylinder body 2. An oil absorption window and an oil pressing window are further formed in the oil distribution disc 8, the oil absorption window is used for oil inlet of the low-pressure side of the cylinder body 2 and the oil distribution disc 8, and the oil pressing window is used for oil outlet of the high-pressure side of the cylinder body 2 and the oil distribution disc 8.
The hydraulic pump further comprises a swash plate 9, the swash plate 9 is arranged at the other end of the cylinder body 2, and an included angle between the swash plate 9 and the driving shaft 6 is smaller than 90 degrees. The swash plate 9 abuts on one end of the shoe 4 not connected to the plunger 3.
It should be noted that the axis of the plunger 3, the axis of the oil cavity, and the axis of the cylinder body 2 are all parallel to the axis of the driving shaft 6, and the driving shaft 6 penetrates through the cylinder body 2 and can drive the cylinder body 2 to rotate; the oil distribution pan 8 is disposed perpendicularly to the drive shaft 6. Specifically, a plurality of oil holes are formed in the cylinder body 2, each oil hole is communicated with an oil cavity, a high-pressure oil pipe or a low-pressure oil pipe penetrates into the oil cavities, the plungers 3 are evenly distributed in the oil holes along the circumference, an inclination angle is formed between the axis of the swash plate 9 and the axis of the cylinder body 2, the sliding shoes 4 are tightly pressed on the swash plate 9, the oil distribution disc 8 is fixed and does not rotate, the driving shaft 6 penetrates through the swash plate 9 and the cylinder body 2, and the cylinder body 2 is connected with the driving shaft 6 through the spline 7. When the prime motor drives the cylinder body 2 to rotate through the driving shaft 6, the plunger 3 is forced to do reciprocating motion in the cylinder body 2 due to the action of the swash plate 9, and oil is absorbed and pressed through an oil absorption window and an oil pressing window of the oil distribution disc 8.
The shell 1 comprises a shell 12 and an end cover 11, wherein the shell 12 is fixedly connected with the end cover 11. The housing 12 and the end cap 11 may be bolted or welded to facilitate mounting of the cylinder block 2, plunger shoe assembly, retaining structure 5, etc. One end of the driving shaft 6 penetrates through the end cover 11, the other end penetrates through the shell 12, and the driving shaft 6 is respectively connected with the end cover 11 and the shell 12 through the bearing 10, so that the shell 1 provides support for the driving shaft 6 and can prevent the driving shaft 6 and the shell 1 from excessively influencing rotation due to friction.
It should be noted that the plunger 3 and the shoe 4 are made of steel, and the stopper ring is made of stainless steel. Of course, the surface of the shoe 4 may also be provided with a copper layer.
Example two
In order to solve the above problems, the present embodiment provides a hydraulic motor, which can be disassembled to replace the damaged structure after any one of the plunger and the shoe is damaged, so that the plunger and the shoe can be used continuously without damage, and the cost for repairing and replacing the plunger and the shoe is saved.
As shown in fig. 1 and 2, the hydraulic motor includes a housing 1, a cylinder block 2, a plunger shoe assembly, a limiting structure 5 and a driving shaft 6, wherein the cylinder block 2, the plunger shoe assembly and the limiting structure 5 are all disposed in a cavity formed by the housing 1.
The plunger piston shoe assembly comprises a plunger 3 and a piston shoe 4, the plunger 3 is arranged in the cylinder body 2 and can slide in the cylinder body in a reciprocating manner, an oil cavity is arranged between the plunger 3 and the cylinder body 2, one of the plunger 3 and the piston shoe 4 is provided with a ball socket 31, the other one of the plunger 3 and the piston shoe 4 is provided with a ball head 41, and the ball head 41 extends into the ball socket 31 to realize the rotary connection between the plunger 3 and the piston shoe 4; the limiting structure 5 is detachably arranged in the ball socket 31 and can limit the ball head 41 to move along the axial direction of the sliding shoe 4; the driving shaft 6 passes through the cylinder block 2 and can rotate the cylinder block 2.
Because the limiting structure 5 can be detachably arranged in the ball socket 31, the axial displacement of the sliding shoe 4 provided with the ball head 41 can be limited, the sliding shoe 4 is prevented from being separated from the plunger 3, when the sliding shoe 4 needs to be replaced, the limiting structure 5 can be detached from the ball socket 31, and then the sliding shoe 4 is separated from the plunger 3, so that the sliding shoe 4 and the plunger 3 can be detached without being damaged. Then according to the sliding shoe 4 replacement, compared with the prior art, the structure can save the cost of the plunger sliding shoe assembly during maintenance and replacement. Limiting structure 5 assembles simply, and it is convenient to dismantle, can dismantle the change when running into 4 serious circumstances of wearing and tearing of skid shoe, prolongs the life of motor. Due to the arrangement of the limiting structure 5, the rotation angle of the sliding shoe 4 can be increased, so that the inclination angle of the separated plunger 3 is increased, and the displacement of the hydraulic motor can be larger under the same structure.
As shown in fig. 2, optionally, the plunger 3 is provided with a ball socket 31, a storage groove 32 is circumferentially provided on the outer side wall of the plunger 3, the storage groove 32 can contain part of the lubricating oil during the relative movement of the plunger 3 and the cylinder 2, and the storage groove 32 can contain impurities which easily wear the outer surface of the plunger 3 and the inner surface of the cylinder 2, and prevent the plunger 3 and the cylinder 2 from rubbing with the impurities to damage the surfaces. The ball socket 31 of the plunger 3 is provided with a receiving groove, and the receiving groove is used for installing the limiting structure 5.
The slipper 4 is provided with a ball 41, and the ball 41 is matched with the ball socket 31 to realize the rotary connection of the slipper 4 and the plunger 3. The shoe 4 is provided with a first oil passing hole 42 and a second oil passing hole 43 in the axial direction, the first oil passing hole 42 and the second oil passing hole 43 are coaxial and communicate with each other, the diameter of the first oil passing hole 42 is larger than that of the second oil passing hole 43, and the length of the first oil passing hole 42 is larger than that of the second oil passing hole 43. Thus, the first oil passage hole 42 actually serves to reduce the weight, and the weight of the entire shoe 4 can be reduced.
Optionally, in this embodiment, the limiting structure 5 includes a limiting ring, the limiting ring is detachably disposed in the receiving groove, and the inner diameter of the limiting ring is smaller than the diameter of the ball 41, so that the ball 41 and the socket 31 can be prevented from being separated from each other. When the sliding shoe 4 and the plunger 3 are disassembled, the limiting ring is directly disassembled, and the sliding shoe 4 and the plunger 3 can be separated.
Optionally, in order to improve the stability of the stop collar installed at the ball socket 31 and prevent the hydraulic motor from being naturally separated from the ball socket 31 during the working process, the groove depth of the accommodating groove is greater than or equal to one half of the diameter of the cross section of the stop collar, so that the connection stability of the stop collar and the accommodating groove can be improved.
Further, in order to facilitate the manufacture of the stop collar, the stop collar is formed by bending a steel wire with certain strength in the embodiment. In order to facilitate the disassembly of the limiting ring by a tool and the assembly of the limiting ring, as shown in fig. 3, in this embodiment, the limiting ring is provided with a notch 51, that is, the limiting ring is not a complete annular structure, so that when the limiting ring is assembled, the limiting ring can generate a certain deformation to adapt to the diameter of the accommodating groove, and when the limiting ring is disassembled, one end of the limiting ring can be directly pulled from the notch 51 of the limiting ring to be disassembled.
With continued reference to fig. 1, the cylinder block 2 is optionally connected to the drive shaft 6 by splines 7. This connection enables the cylinder 2 to rotate with the drive shaft 6, which forces the plunger 3 to reciprocate within the cylinder 2.
The shell 1 comprises a shell 12 and an end cover 11, wherein the shell 12 is fixedly connected with the end cover 11. The housing 12 and the end cap 11 may be bolted or welded to facilitate mounting of the cylinder block 2, plunger shoe assembly, retaining structure 5, etc. The driving shaft 6 passes through the end cover 11 at one end and the shell 12 at the other end, and the driving shaft 6 is respectively connected with the end cover 11 and the shell 12 through the bearing 10, so that the shell 1 provides support for the driving shaft 6 and can prevent the excessive friction between the driving shaft 6 and the shell 1 from influencing the rotation.
It should be noted that the plunger 3 and the shoe 4 are made of steel, and the retainer ring is made of stainless steel. Of course, the surface of the shoe 4 may also be provided with a copper layer.
Other structures of the hydraulic motor are the same as those of the prior art, and thus, will not be described in detail.
In addition, the foregoing is only a preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A hydraulic pump, comprising:
a housing (1);
a cylinder (2) disposed in the housing (1);
the plunger and slipper assembly comprises a plunger (3) and a slipper (4), the plunger (3) is arranged in the cylinder body (2) in a reciprocating sliding mode, an oil cavity is arranged between the plunger (3) and the cylinder body (2), one of the plunger (3) and the slipper (4) is provided with a ball socket (31), the other plunger (3) and the slipper (4) is provided with a ball head (41), and the ball head (41) extends into the ball socket (31);
the limiting structure (5) is detachably arranged in the ball socket (31) and can prevent the ball head (41) from being separated from the ball socket (31);
and the driving shaft (6) penetrates through the cylinder body (2) and can drive the cylinder body (2) to rotate.
2. The hydraulic pump according to claim 1, characterized in that the limiting structure (5) comprises a limiting ring, the inner side wall of the ball socket (31) is circumferentially provided with a receiving groove, the limiting ring is detachably arranged in the receiving groove, and the inner diameter of the limiting ring is smaller than the diameter of the ball head (41).
3. The hydraulic pump of claim 2, wherein the stop collar is circular in cross-section and the receiving groove has a groove depth equal to or greater than one-half of the diameter of the stop collar cross-section.
4. A hydraulic pump according to claim 3, characterized in that the stop collar is formed by bending a steel wire, the stop collar having a notch (51).
5. The hydraulic pump according to claim 1, characterized in that the plunger (3) is provided with a storage groove (32) circumferentially on its outer side wall.
6. A hydraulic motor, comprising:
a housing (1);
a cylinder (2) disposed in the housing (1);
the plunger and slipper assembly comprises a plunger (3) and a slipper (4), the plunger (3) is arranged in the cylinder body (2) in a reciprocating sliding mode, an oil cavity is arranged between the plunger (3) and the cylinder body (2), one of the plunger (3) and the slipper (4) is provided with a ball socket (31), the other plunger (3) and the slipper (4) is provided with a ball head (41), and the ball head (41) extends into the ball socket (31);
the limiting structure (5) is detachably arranged in the ball socket (31) and can prevent the ball head (41) from being separated from the ball socket (31);
and the driving shaft (6) penetrates through the cylinder body (2) and can drive the cylinder body (2) to rotate.
7. A hydraulic motor according to claim 6, wherein the limiting structure (5) comprises a limiting ring, the inner side wall of the ball socket (31) is circumferentially provided with a receiving groove, the limiting ring is detachably arranged in the receiving groove, and the inner diameter of the limiting ring is smaller than the diameter of the ball head (41).
8. The hydraulic motor of claim 7, wherein the stop collar is circular in cross-section and the receiving groove has a depth that is greater than or equal to one-half the diameter of the stop collar cross-section.
9. A hydraulic motor according to claim 7, wherein the stop ring is formed by bending a steel wire, the stop ring having a notch (51).
10. The hydraulic motor according to claim 7, characterized in that a storage groove (32) is circumferentially provided on an outer side wall of the plunger (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221138021.6U CN217481465U (en) | 2022-05-12 | 2022-05-12 | Hydraulic pump and hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221138021.6U CN217481465U (en) | 2022-05-12 | 2022-05-12 | Hydraulic pump and hydraulic motor |
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| Publication Number | Publication Date |
|---|---|
| CN217481465U true CN217481465U (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221138021.6U Active CN217481465U (en) | 2022-05-12 | 2022-05-12 | Hydraulic pump and hydraulic motor |
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| Country | Link |
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| CN (1) | CN217481465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898827A (en) * | 2022-11-24 | 2023-04-04 | 上海羿弓氢能科技有限公司 | Novel high-frequency action decompression cylinder for diaphragm compressor |
-
2022
- 2022-05-12 CN CN202221138021.6U patent/CN217481465U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898827A (en) * | 2022-11-24 | 2023-04-04 | 上海羿弓氢能科技有限公司 | Novel high-frequency action decompression cylinder for diaphragm compressor |
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Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: WEICHAI POWER Co.,Ltd. Patentee after: Weichai Hydraulic Transmission Co.,Ltd. Address before: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee before: WEICHAI POWER Co.,Ltd. Patentee before: LINDE HYDRAULICS (CHINA) Co.,Ltd. |
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