CN204371571U - Oil hydraulic pump swash plate - Google Patents
Oil hydraulic pump swash plate Download PDFInfo
- Publication number
- CN204371571U CN204371571U CN201420865454.0U CN201420865454U CN204371571U CN 204371571 U CN204371571 U CN 204371571U CN 201420865454 U CN201420865454 U CN 201420865454U CN 204371571 U CN204371571 U CN 204371571U
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- CN
- China
- Prior art keywords
- swash plate
- crescent moon
- circular arc
- disk body
- hydraulic pump
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Oil hydraulic pump swash plate, comprise swash plate disk body, wherein, swash plate disk body is respectively arranged with top crescent moon circular arc and bottom crescent moon circular arc, and top crescent moon circular arc and bottom crescent moon circular arc can rotate around crescent moon cambered surface gyration center, for alleviate swash plate at variable cylinder body by the effect of slide block around crescent moon bearing length time rotating operation load, reduce wear; Crescent moon cambered surface gyration center side is provided with variable supporting plane simultaneously, for supporting and carry the plunger assembly active force suffered by whole swash plate, unloads the load that swash plate produces in running in time; Swash plate disk body top is provided with the short pin of rocking arm for being set with slide block, and is provided with slider support plane on the swash plate disk body of the short pin both sides of rocking arm; Be provided with the swash plate intermediate cavity for running through driving shaft in the middle of swash plate disk body, and swash plate intermediate cavity both sides are respectively arranged with the limit end face for limiting driving shaft moving region.
Description
Technical field
The utility model relates to Variable plunger pump control technique field, particularly relates to a kind of oil hydraulic pump swash plate.
Background technique
Swash plate at variable cylinder body by the effect of slide block around crescent moon bearing rotary, thus change the operation relative position of plunger, oil hydraulic pump by changing the inclination angle of swash plate to increase or to reduce the reciprocating stroke of piston, thus realizes the function of regulator solution pump displacement.But traditional swash plate is installed on the enough prop carriers in the pump housing on crescent moon bearing not used for cooperation swash plate disk body, cause swash plate large around crescent moon bearing length time rotating operation load by the effect of slide block at variable cylinder body, serious wear; Relief face for supporting and carry the plunger assembly active force suffered by whole swash plate is not set simultaneously, and the pressure of plunger to swash plate is larger, therefore there is higher requirement to the selection of swash plate or processing aspect, otherwise easily cause swash plate in running because off-load support force causes supporting surface to subside and then breaks down not.
Model utility content
The technical problem that the utility model solves is to provide a kind of oil hydraulic pump swash plate, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Oil hydraulic pump swash plate, comprise swash plate disk body, wherein, swash plate disk body is respectively arranged with for coordinating swash plate disk body to be installed on top crescent moon circular arc in the pump housing on crescent moon bearing and bottom crescent moon circular arc, and top crescent moon circular arc and bottom crescent moon circular arc can rotate around crescent moon cambered surface gyration center, crescent moon cambered surface gyration center side is provided with variable supporting plane simultaneously, the plunger assembly active force that variable supporting plane supports and carries suffered by whole swash plate, the pressure of plunger to swash plate is larger, therefore higher requirement is had to the matrix of bottom crescent moon circular arc and top crescent moon circular arc and surface hardness, swash plate disk body top is provided with the short pin of rocking arm for being set with slide block, and slider support plane is provided with on the swash plate disk body of the short pin both sides of rocking arm, under the drive of variable cylinder body, slide block drives whole swash plate disk body to rotate around crescent moon cambered surface gyration center by the short pin of rocking arm, be provided with the swash plate intermediate cavity for running through driving shaft in the middle of swash plate disk body, and swash plate intermediate cavity both sides are respectively arranged with the limit end face for limiting driving shaft moving region.
In the utility model, top crescent moon circular arc is provided with the upper limit dog hole for installing bearing dowel.
In the utility model, bottom crescent moon circular arc is provided with the lower limit dog hole for installing bearing dowel.
In the utility model, limit end face is symmetricly set on swash plate intermediate cavity both sides about swash plate disk body center line.
In the utility model, variable swash plate need possess the characteristics such as wear-resisting, corrosion-resistant and shock-resistant, and according to actual needs, part-structure needs higher machining accuracy, the dimensional accuracy of bottom crescent moon circular arc and top crescent moon circular arc is+0.006mm ~-0.009mm, and the coaxality of bottom crescent moon circular arc and top crescent moon circular arc is 0.02mm; The dimensional accuracy of the short pin of rocking arm is-0.006mm ~-0.015mm, and is 0.02mm relative to the parallelism of bottom crescent moon circular arc and top crescent moon circular arc; The planeness of variable supporting plane is 0.005mm, and is 0.02mm relative to the parallelism of bottom crescent moon circular arc and top crescent moon circular arc; All the other body structure surfaces are the requirement of machining requirements IT6 class precision.
Oil hydraulic pump swash plate processing method, concrete steps are as follows:
1) body material is chosen, 22CrMoS3-5 cast form selected by body material, body material requires dense structure, without mass defects such as loose, slag inclusion and pores, and batch envelope and overlap are removed to substrate material surface, adopt annealing+normalizing+quenching with Subsequent tempering to body material, hardness requirement HB280 ~ 320, tensile strength is not less than 900N/mm simultaneously
2, casting accuracy presses GB/T6414-CT8, obtains disk body blank; Follow-up machining allowance is stayed at the short pin of processing rocking arm, bottom crescent moon circular arc, top crescent moon circular arc, slider support plane and variable supporting plane;
2) to step 1) in the disk body blank that obtains leave the surface of surplus and relevant design key element carries out machining, and stay subsequent fine machining allowance when the short pin of processing rocking arm, bottom crescent moon circular arc, top crescent moon circular arc, slider support plane and variable supporting plane;
3) to step 2) the disk body blank of completion of processing carries out surface gas nitriding treatment, and grinding front surface hardness is not less than 1000HV0.2, depth of penetration 0.4 ~ 0.6mm;
4) in step 3) in carry out on the complete disk body blank of surface gas nitriding treatment, corase grind variable supporting plane;
5) with step 4) in the variable supporting plane of corase grind be positioning datum, crescent moon circular arc and top crescent moon circular arc bottom fine ginding after disposable clamping;
6) with step 4) in corase grind variable supporting plane be positioning datum, the short pin of fine ginding rocking arm and slider support plane after disposable clamping;
7) again with bottom crescent moon circular arc and top crescent moon circular arc and the short pin of rocking arm for positioning datum, fine ginding variable supporting plane, obtains oil hydraulic pump swash plate finished product;
8) to step 7) middle acquisition oil hydraulic pump swash plate finished product removal burr;
9) to step 8) in remove the complete oil hydraulic pump swash plate finished product of burr and carry out sampling Detection, sampling observation rate is not less than 5%, and sample detection be entirely examine;
10) to step 9) in detect qualified oil hydraulic pump swash plate finished product carry out cleaning corrosion protection degaussing process;
11) to step 10) in carry out cleaning oil hydraulic pump swash plate finished appearance that corrosion protection degaussing is disposed detect qualified after, encapsulation warehouse-in.
In the utility model, step 7) in gained oil hydraulic pump swash plate finished product hardness be not less than 850HV0.2, depth of penetration is not less than 0.3mm.
Beneficial effect: the utility model by arranging top crescent moon circular arc and bottom crescent moon circular arc on swash plate disk body, and top crescent moon circular arc and bottom crescent moon circular arc can rotate around crescent moon cambered surface gyration center, for alleviate swash plate at variable cylinder body by the effect of slide block around crescent moon bearing rotary operating load, reduce wear; Crescent moon cambered surface gyration center side is provided with variable supporting plane simultaneously, for supporting and carry the plunger assembly active force suffered by whole swash plate, the load that timely unloading swash plate produces in running, and material selection 22CrMoS3-5 cast form, thus reduce swash plate in running because off-load support force causes supporting surface to subside and then breaks down not.
Accompanying drawing explanation
Fig. 1 is the structural representation of preferred embodiment of the present utility model.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the plan view of preferred embodiment of the present utility model.
Fig. 4 is oil hydraulic pump swash plate base substrate axonometric drawing.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See the oil hydraulic pump swash plate of Fig. 1 ~ Fig. 3, comprise the short pin 1 of rocking arm, swash plate intermediate cavity 2, limit end face 3, bottom crescent moon circular arc 4, top crescent moon circular arc 5, slider support plane 6, upper limit dog hole 7, lower limit dog hole 8, variable supporting plane 9, crescent moon cambered surface gyration center 10 and swash plate disk body center line 11.
In the present embodiment, swash plate disk body is symmetrical set about swash plate disk body center line 11:
The bottom crescent moon circular arc 4 that swash plate disk body is arranged up and down respectively and top crescent moon circular arc 5 are for coordinating the crescent moon bearing be installed in the pump housing, variable supporting plane 9 supports and carries the plunger assembly active force suffered by whole swash plate, the pressure of plunger to swash plate is larger, therefore higher requirement is had to the matrix of bottom crescent moon circular arc 4 and top crescent moon circular arc 5 and surface hardness, bottom crescent moon circular arc 4 and top crescent moon circular arc 5 can rotate around crescent moon cambered surface gyration center 10, slide block set to be contained on the short pin 1 of rocking arm and to have slider support plane 6 to support, distance between the short pin 1 of rocking arm and crescent moon cambered surface gyration center 10 is L, and thus under the drive of variable cylinder body, slide block drives whole swash plate to rotate around crescent moon cambered surface gyration center 10 by the short pin of rocking arm 1, variable swash plate is respectively arranged with upper limit dog hole 7 and lower limit dog hole 8 up and down, for installing bearing dowel, the middle swash plate intermediate cavity 2 arranged is for running through driving shaft, and swash plate intermediate cavity 2 both sides are provided with limit end face 3.
In the present embodiment, oil hydraulic pump swash plate need possess the characteristics such as wear-resisting, corrosion-resistant and shock-resistant, and according to actual needs, part-structure needs higher machining accuracy, the dimensional accuracy of bottom crescent moon circular arc 4 and top crescent moon circular arc 5 is+0.006mm ~-0.009mm, and the coaxality of bottom crescent moon circular arc 4 and top crescent moon circular arc 5 is 0.02mm; The dimensional accuracy of the short pin 1 of rocking arm is-0.006mm ~-0.015mm, and is 0.02mm relative to the parallelism of bottom crescent moon circular arc 4 and top crescent moon circular arc 5; The planeness of variable supporting plane 9 is 0.005mm; Variable supporting plane 9 is 0.02mm relative to the parallelism of bottom crescent moon circular arc 4 and top crescent moon circular arc 5; All the other body structure surfaces are the requirement of machining requirements IT6 class precision.
See the oil hydraulic pump swash plate base substrate of Fig. 4, comprise short pin blank cylindrical 1-1, bottom crescent moon black skin 4-1, top crescent moon black skin 5-1 and slider support black skin 6-1, process in strict accordance with oil hydraulic pump swash plate base substrate schematic diagram in course of working, concrete steps are as follows:
1) body material is chosen, 22CrMoS3-5 cast form selected by body material, body material requires dense structure, without mass defects such as loose, slag inclusion and pores, and batch envelope and overlap are removed to substrate material surface, adopt annealing+normalizing+quenching with Subsequent tempering to body material, hardness requirement HB280 ~ 320, tensile strength is not less than 900N/mm simultaneously
2, casting accuracy presses GB/T6414-CT8, obtains disk body blank; Follow-up machining allowance is stayed at the short pin of processing rocking arm 1, bottom crescent moon circular arc 4, top crescent moon circular arc 5, slider support plane 6 and variable supporting plane 9;
2) to step 1) in the disk body blank that obtains leave the surface of surplus and relevant design key element carries out machining, and stay subsequent fine machining allowance when the short pin 1 of processing rocking arm, bottom crescent moon circular arc 4, top crescent moon circular arc 5, slider support plane 6 and variable supporting plane 9;
3) to step 2) the disk body blank of completion of processing carries out surface gas nitriding treatment, and grinding front surface hardness is not less than 1000HV0.2, depth of penetration 0.4 ~ 0.6mm;
4) in step 3) in carry out on the complete disk body blank of surface gas nitriding treatment, corase grind variable supporting plane 9;
5) with step 4) in the variable supporting plane 9 of corase grind be positioning datum, crescent moon circular arc 4 and top crescent moon circular arc 5 bottom fine ginding after disposable clamping;
6) with step 4) in corase grind variable supporting plane 9 be positioning datum, the short pin 1 of fine ginding rocking arm and slider support plane 6 after disposable clamping;
7) again with bottom crescent moon circular arc 4 and top crescent moon circular arc 5 and the short pin 1 of rocking arm for positioning datum, fine ginding variable supporting plane 9, obtains oil hydraulic pump swash plate finished product;
8) to step 7) middle acquisition oil hydraulic pump swash plate finished product removal burr;
9) to step 8) in remove the complete oil hydraulic pump swash plate finished product of burr and carry out sampling Detection, sampling observation rate is not less than 5%, and sample detection be entirely examine;
10) to step 9) in detect qualified oil hydraulic pump swash plate finished product carry out cleaning corrosion protection degaussing process;
11) to step 10) in carry out cleaning oil hydraulic pump swash plate finished appearance that corrosion protection degaussing is disposed detect qualified after, encapsulation warehouse-in.
In the present embodiment, step 7) in gained oil hydraulic pump swash plate finished product hardness be not less than 850HV0.2, depth of penetration is not less than 0.3mm.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. oil hydraulic pump swash plate, comprise swash plate disk body, it is characterized in that, swash plate disk body being respectively arranged with for coordinating swash plate disk body to be installed on top crescent moon circular arc in the pump housing on crescent moon bearing and bottom crescent moon circular arc, crescent moon cambered surface gyration center side being provided with variable supporting plane simultaneously; Swash plate disk body top is provided with the short pin of rocking arm for being set with slide block, and is provided with slider support plane on the swash plate disk body of the short pin both sides of rocking arm; Be provided with the swash plate intermediate cavity for running through driving shaft in the middle of swash plate disk body, and swash plate intermediate cavity both sides are respectively arranged with the limit end face for limiting driving shaft moving region.
2. oil hydraulic pump swash plate according to claim 1, is characterized in that, top crescent moon circular arc is provided with the upper limit dog hole for installing bearing dowel.
3. oil hydraulic pump swash plate according to claim 1, is characterized in that, bottom crescent moon circular arc is provided with the lower limit dog hole for installing bearing dowel.
4. oil hydraulic pump swash plate according to claim 1, is characterized in that, limit end face is symmetricly set on swash plate intermediate cavity both sides about swash plate disk body center line.
5. oil hydraulic pump swash plate according to claim 1, is characterized in that, the dimensional accuracy of bottom crescent moon circular arc and top crescent moon circular arc is+0.006mm ~-0.009mm, and the coaxality of bottom crescent moon circular arc and top crescent moon circular arc is 0.02mm.
6. oil hydraulic pump swash plate according to claim 1, is characterized in that, the dimensional accuracy of the short pin of rocking arm is-0.006mm ~-0.015mm, and is 0.02mm relative to the parallelism of bottom crescent moon circular arc and top crescent moon circular arc.
7. oil hydraulic pump swash plate according to claim 1, is characterized in that, the planeness of variable supporting plane is 0.005mm, and is 0.02mm relative to the parallelism of bottom crescent moon circular arc and top crescent moon circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865454.0U CN204371571U (en) | 2014-12-30 | 2014-12-30 | Oil hydraulic pump swash plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865454.0U CN204371571U (en) | 2014-12-30 | 2014-12-30 | Oil hydraulic pump swash plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371571U true CN204371571U (en) | 2015-06-03 |
Family
ID=53327797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420865454.0U Expired - Fee Related CN204371571U (en) | 2014-12-30 | 2014-12-30 | Oil hydraulic pump swash plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533739A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic pump tilting tray and machining method thereof |
-
2014
- 2014-12-30 CN CN201420865454.0U patent/CN204371571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533739A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic pump tilting tray and machining method thereof |
| CN104533739B (en) * | 2014-12-30 | 2017-06-20 | 苏州萨伯工业设计有限公司 | Hydraulic pump swash plate and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20171230 |