CN217270642U - Return stroke dish, pump and motor - Google Patents
Return stroke dish, pump and motor Download PDFInfo
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- CN217270642U CN217270642U CN202220931031.9U CN202220931031U CN217270642U CN 217270642 U CN217270642 U CN 217270642U CN 202220931031 U CN202220931031 U CN 202220931031U CN 217270642 U CN217270642 U CN 217270642U
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- return disc
- slipper
- mounting hole
- neck
- return
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Abstract
The utility model discloses a return stroke dish, pump and motor, wherein, the return stroke dish is equipped with the plunger subassembly, the plunger subassembly includes the piston shoe that has the neck, the return stroke dish includes the return stroke dish body, the return stroke dish body is equipped with centre bore and a plurality of connection structure, a plurality of connection structure evenly distribute around the centre bore; the connecting structure comprises a sliding shoe mounting hole and a notch, the notch extends outwards and is communicated with the sliding shoe mounting hole, the diameter of the neck is smaller than that of the sliding shoe mounting hole, the width of the notch is larger than that of the neck, and the width of the notch is smaller than that of the sliding shoe mounting hole. The return disc effectively reduces the machining precision requirement of the sliding shoe mounting hole, is simple in assembly operation, and avoids the phenomenon that the peripheral surface of the sliding shoe is scratched in the process of assembling the sliding shoe and the return disc in the prior art.
Description
Technical Field
The utility model relates to a hydraulic component technical field especially relates to a return stroke dish, pump and motor.
Background
The plunger pump is an important device of a hydraulic system, and realizes the functions of oil absorption, oil pressing and the like by changing the volume of a sealed working cavity through the reciprocating motion of a plunger in a cylinder body. The plunger pump is characterized in that the return disc is an important element in the plunger pump, oil suction and discharge of the plunger pump are completed through reciprocating motion of the plunger in the cylinder body, during oil discharge, the plunger compresses the plunger cavity through pushing of the swash plate so as to spray high-pressure oil, and during oil suction, the plunger moves backwards under the driving of the return disc through the sliding shoes so that the volume of the plunger cavity is increased to form vacuum to realize oil suction.
In the prior art, the slipper mounting holes of the return disc are through holes extending along the axial direction, the plunger assembly needs to penetrate through the slipper mounting holes of the return disc, and the diameter of the slipper mounting holes needs to be larger than that of the plunger assembly to enable the assembly to be normal, so that the machining precision requirement on the slipper mounting holes is high, and the machining efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a return stroke dish, pump and motor to the return stroke dish among the solution prior art requires high to the machining precision of piston shoe mounting hole, leads to the problem that machining efficiency is low.
To achieve the purpose, the utility model adopts the following technical proposal:
a return disc having a plunger assembly mounted thereon, the plunger assembly including a slipper having a neck, the return disc comprising:
the return disc comprises a return disc body, a first connecting structure and a second connecting structure, wherein the return disc body is provided with a central hole and a plurality of connecting structures, and the connecting structures are uniformly distributed on the periphery of the central hole;
the connecting structure comprises a slipper mounting hole and a notch, the notch extends outwards and is communicated with the slipper mounting hole, the diameter of the neck is smaller than that of the slipper mounting hole, the width of the notch is larger than that of the neck, and the width of the notch is smaller than that of the slipper mounting hole.
Preferably, the slipper further comprises a slipper body connected to the neck, the slipper body having a diameter greater than a diameter of the slipper mounting hole.
Preferably, the length of the neck portion in the axial direction is greater than the thickness of the return disc body in the axial direction.
Preferably, the notch is a rectangular notch.
Preferably, the two ends of the side wall of the central hole along the axial direction are respectively provided with a first guide edge and a second guide edge.
Preferably, the outer periphery of one end surface of the return disc body in the axial direction is provided with a third guide edge.
Preferably, the surface of the return disc body is provided with a wear-resistant coating.
Preferably, the number of the connection structures is an odd number.
A pump motor comprises the return disc and a plunger assembly mounted on the return disc, wherein the plunger assembly comprises a sliding shoe with a neck.
A motor comprises the return disc and a plunger assembly mounted on the return disc, wherein the plunger assembly comprises a sliding shoe with a neck.
The utility model has the advantages that:
an object of the present invention is to provide a return disc, a pump and a motor, the return disc including a return disc body, specifically, the return disc body having a central hole and a plurality of connecting structures, through the provision of a notch extending outward and communicating with a slipper mounting hole, when the assembly of the slipper and the return disc is required, the drive shaft passes through the central hole, the neck of the slipper passes through the notch and enters into the slipper mounting hole, so as to assemble the slipper in the slipper mounting hole, wherein, by setting the diameter of the neck to be smaller than the diameter of the slipper mounting hole, the width of the notch is larger than the diameter of the neck, and the width of the notch is smaller than the diameter of the slipper mounting hole, compared with the prior art in which the slipper is inserted in the slipper mounting hole along the axial direction, the machining accuracy requirement of the slipper mounting hole is effectively reduced, the assembly operation is simple, and the phenomenon of scratching of the neck in the process of assembling the slipper and the return disc is avoided, meanwhile, the sliding shoes can move along the radial direction in the sliding shoe mounting holes.
Drawings
Fig. 1 is a schematic structural diagram of a return disk according to an embodiment of the present invention;
fig. 2 is a front view of a return plate according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a return disk according to an embodiment of the present invention.
In the figure:
1. a return disc body; 11. a central bore; 12. a slipper mounting hole; 13. a notch; 15. a first guide edge; 16. a second guide edge; 17. and a third guide edge.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention, and the technical effects achieved by the present invention clearer, the following detailed description will be made with reference to the accompanying drawings for further describing the technical solutions of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
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; either directly or indirectly through intervening media, either internally or in any other relationship. 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 application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. 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.
The utility model provides a return disc, wherein, a plunger assembly is arranged on the return disc, the plunger assembly comprises a sliding shoe with a neck, as shown in figure 1 and figure 2, the return disc comprises a return disc body 1, the return disc body 1 is provided with a central hole 11 and a plurality of connecting structures, and the connecting structures are uniformly distributed around the central hole 11; the connecting structure comprises a slipper mounting hole 12 and a notch 13, the notch 13 extends outwards and is communicated with the slipper mounting hole 12, the diameter of the neck is smaller than that of the slipper mounting hole 12, the width of the notch 13 is larger than that of the neck, and the width of the notch 13 is smaller than that of the slipper mounting hole 12.
The return disc, as shown in fig. 1 and 2, is provided with a notch 13 extending outward and communicating with the slipper mounting hole 12, when the sliding shoe and the return disc need to be assembled, the driving shaft passes through the central hole 11, the neck part of the sliding shoe passes through the notch 13 and enters the sliding shoe mounting hole 12, so that the plunger and the return disc are assembled, wherein, by setting the diameter of the neck part to be smaller than that of the slipper mounting hole 12, the width of the gap 13 is larger than that of the neck part, and the width of the gap 13 is smaller than the diameter of the slipper mounting hole 12, compared with the prior art that the slipper is inserted into the slipper mounting hole, the machining precision requirement of the slipper mounting hole 12 is effectively reduced, the assembly operation is simple, and the phenomenon that the peripheral surface of the plunger body is scratched in the process of assembling the plunger and the return disc in the prior art is avoided, and meanwhile, the sliding shoes can move in the radial direction in the sliding shoe mounting holes 12.
Specifically, as shown in fig. 1 and 2, the slipper further includes a slipper body connected to the neck, the slipper body having a diameter greater than the diameter of the slipper mounting hole 12. The arrangement is such that the assembly position of the slipper to the return disc is axially defined.
Specifically, in the present embodiment, as shown in fig. 2, the notch 13 is a rectangular notch. The rectangular notch is convenient to process. It will be appreciated that the indentation 13 may have other shapes to ensure that the neck of the boot can pass through the indentation 13 and into the boot mounting aperture 12. Preferably, in this embodiment, the notch 13 extends radially outward.
Specifically, the number of the connection structures is an odd number. In the present embodiment, as shown in fig. 2, the number of the connection structures is seven. Seven connecting structures are evenly distributed around the central opening along the circumferential direction. It will be appreciated that the specific number of attachment structures may be increased or decreased as desired.
Specifically, the length of the neck portion in the axial direction is larger than the thickness of the return disc body 1 in the axial direction. In particular, the plunger assembly further comprises a plunger, arranged so as to facilitate assembly of the neck and the plunger.
In the present embodiment, as shown in fig. 3, the two ends of the sidewall of the central hole 11 in the axial direction are respectively provided with a first guiding edge 15 and a second guiding edge 16. The arrangement is such that burrs at two ends of the central hole 11 along the axial direction are removed, and the burrs are prevented from scratching operators and/or scratching the outer side wall of the driving shaft in the assembling process; while also facilitating the fitting of the drive shaft in the central hole 11.
In the present embodiment, as shown in fig. 3, the outer periphery of one of the end surfaces of the return disc body 1 in the axial direction is provided with a third guide edge 17. So set up to reduce the weight of return stroke dish body 1, increase the pleasing to the eye degree of return stroke dish body 1.
In this embodiment, the surface of the return disc body 1 is provided with a wear-resistant coating. This increases the service life of the return disc body 1. Specifically, the surface of the return disc body 1 adopts a nitrided layer obtained by a nitriding treatment process, and the nitrided layer formed by the nitriding treatment can improve the wear resistance, fatigue resistance, corrosion resistance and high temperature resistance of the return disc body 1. The specific process of the nitridation process belongs to the prior art, and is not described herein again.
It can be understood that the wear-resistant coating on the surface of the return disc body 1 may be other coatings, so as to improve the wear resistance, fatigue resistance, corrosion resistance and high temperature resistance of the return disc body 1.
The utility model also provides a pump, this pump include foretell return stroke dish, still including installing in the plunger subassembly of return stroke dish, the plunger subassembly is including the piston shoes that have the neck. Specifically, the diameter of the neck portion is smaller than the diameter of the slipper mounting hole 12, the width of the notch 13 is larger than the diameter of the neck portion, and the width of the notch 13 is smaller than the diameter of the slipper mounting hole 12. By using the return disc, the machining precision requirement of the slipper mounting hole 12 is effectively reduced, the assembly operation is simple, the phenomenon that the peripheral surface of the neck is scratched in the process of assembling the slipper and the return disc in the prior art is avoided, and the slipper can be ensured to move in the slipper mounting hole 12 along the radial direction.
The utility model also provides a motor, this motor include foretell return stroke dish, still including installing in the plunger subassembly of return stroke dish, the plunger subassembly is including the piston shoes that have the neck. Specifically, the diameter of the neck is smaller than the diameter of the slipper mounting hole 12, the width of the notch 13 is larger than the diameter of the neck, and the width of the notch 13 is smaller than the diameter of the slipper mounting hole 12. By using the return disc, the machining precision requirement of the slipper mounting hole 12 is effectively reduced, the assembly operation is simple, the phenomenon that the outer peripheral surface of the neck is scratched in the process of assembling the slipper and the return disc in the prior art is avoided, and the slipper can be ensured to move in the slipper mounting hole 12 along the radial direction.
The specific structures of the pump and the motor belong to the prior art, and are not described herein again.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A return disc having a plunger assembly mounted thereon, the plunger assembly including a slipper having a neck, the return disc comprising:
the return disc comprises a return disc body (1), wherein the return disc body (1) is provided with a central hole (11) and a plurality of connecting structures, and the connecting structures are uniformly distributed around the central hole (11);
the connecting structure comprises a slipper mounting hole (12) and a notch (13), wherein the notch (13) extends outwards and is communicated with the slipper mounting hole (12), the diameter of the neck is smaller than that of the slipper mounting hole (12), the width of the notch (13) is larger than that of the neck, and the width of the notch (13) is smaller than that of the slipper mounting hole (12).
2. A return disc according to claim 1, wherein the slipper further comprises a slipper body connected to the neck, the slipper body having a diameter larger than the diameter of the slipper mounting hole (12).
3. A return disc according to claim 1, characterized in that the length of the neck in the axial direction is greater than the thickness of the return disc body (1) in the axial direction.
4. A return disc according to claim 1, characterized in that the gap (13) is a rectangular gap.
5. Return disc according to any of claims 1-4, characterized in that the side wall of the central hole (11) is provided with a first guiding edge (15) and a second guiding edge (16) at both axial ends, respectively.
6. A return disc according to any one of claims 1-4, characterized in that the periphery of one of the axial end faces of the return disc body (1) is provided with a third guiding edge (17).
7. Return disc according to any of claims 1 to 4, characterized in that the surface of the return disc body (1) is provided with a wear resistant coating.
8. Backhaul disk according to any of claims 1-4, wherein the number of connection structures is an odd number.
9. A pump comprising the return disc of any one of claims 1-8, and further comprising a plunger assembly mounted to the return disc, the plunger assembly comprising a slipper having a neck.
10. A motor comprising a return disc according to any one of claims 1 to 8, and further comprising a plunger assembly mounted to the return disc, the plunger assembly comprising a slipper having a neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220931031.9U CN217270642U (en) | 2022-04-21 | 2022-04-21 | Return stroke dish, pump and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220931031.9U CN217270642U (en) | 2022-04-21 | 2022-04-21 | Return stroke dish, pump and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217270642U true CN217270642U (en) | 2022-08-23 |
Family
ID=82877906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220931031.9U Active CN217270642U (en) | 2022-04-21 | 2022-04-21 | Return stroke dish, pump and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217270642U (en) |
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2022
- 2022-04-21 CN CN202220931031.9U patent/CN217270642U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
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. |