CN113374850A - Guide wheel structure of hydraulic torque converter of engineering machinery - Google Patents
Guide wheel structure of hydraulic torque converter of engineering machinery Download PDFInfo
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- CN113374850A CN113374850A CN202110774105.2A CN202110774105A CN113374850A CN 113374850 A CN113374850 A CN 113374850A CN 202110774105 A CN202110774105 A CN 202110774105A CN 113374850 A CN113374850 A CN 113374850A
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- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
- F16H41/26—Shape of runner blades or channels with respect to function
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Turbines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a guide wheel structure of a hydraulic torque converter of engineering machinery, which comprises an outer ring, an inner ring and a cascade connected between the outer ring and the inner ring, wherein a circular cavity is formed between the outer ring and the inner ring, the cascade comprises n blades which are uniformly arranged in the circumferential direction, n is more than or equal to 12 and less than or equal to 16, n is an integer, a liquid flow channel with an inlet and an outlet is formed between the adjacent blades, the arc surface of the inner ring of the outer ring consists of three arcs, the arc surface of the outer ring of the inner ring consists of three arcs, the width of a guide wheel is effectively shortened, and the inlet angle, the outlet angle and the streamline length of the guide wheel are designed, so that the guide wheel blades are in a space streamline structure, the internal impact loss is reduced, the projection of the end surface of the outer ring end of the blades falls in the end surface of the inner ring end of the blades, the die drawing is easy, the manufacturability of the, thereby improving the performance of the torque converter.
Description
Technical Field
The invention relates to the technical field of engineering machinery hydraulic torque converters, in particular to a guide wheel structure of an engineering machinery hydraulic torque converter.
Background
The torque converter is a device which uses liquid as a working medium and utilizes the kinetic energy of the liquid to carry out energy transmission, and a pump impeller, a turbine and a guide wheel are core elements of the torque converter. When the liquid flows through the guide wheel, the relative speed of the liquid flow changes as the guide wheel is fixed; the change of the speed and direction of the liquid flow can cause the change of the momentum moment of the liquid flow, and the main function of the guide wheel is to change the momentum moment of the liquid. The guide wheel changes the fluid flow momentum moment and also changes the form of fluid flow energy, generally the pressure energy of the fluid flow is converted into kinetic energy, and therefore, the structure of the guide wheel cascade directly influences the performance of the hydraulic torque converter.
Aiming at a torque converter with a circulation circle diameter of 370mm used in a front eight-rear four-gear box newly developed and developed by a 350-horsepower land leveler, a mature product which can be directly used is not available at home, and the performance of a hydraulic torque converter directly influences the dynamic property and the economical efficiency of a main engine. Patent CN106286756A proposes a single turbine torque converter with a circle diameter of 380mm ± 5mm, but the characteristic curve of the torque converter is not suitable for a land scraper; patent CN109027175A proposes a torque converter guide wheel structure, which is suitable for a torque converter with a circle diameter of 355mm, and the torque converter has high torque conversion ratio and low energy capacity, and is also not suitable for a land scraper product.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a guide wheel structure of a hydraulic torque converter of engineering machinery, which is suitable for a torque converter with a circulating circle diameter of 370mm, wherein an outer ring and an inner ring of the guide wheel structure both adopt a segmented arc structure, the width of the guide wheel is shortened, blades adopt a streamline structure, the internal impact loss is reduced, the die drawing is easy, and the manufacturability is high; the torque converter using the guide wheel has high capacity and mixed penetration characteristic, and is suitable for the working condition of the land leveler.
A guide wheel structure of a hydraulic torque converter of engineering machinery comprises an outer ring, an inner ring and a blade cascade connected between the outer ring and the inner ring, wherein a circular cavity is formed between the outer ring and the inner ring, the blade cascade comprises n blades which are uniformly arranged in the circumferential direction, n is more than or equal to 12 and less than or equal to 16, n is an integer, a liquid flow channel with an inlet and an outlet is formed between every two adjacent blades, one side of the outer ring, facing the inner ring, is provided with an arched inner ring arc surface, a line formed by cutting any radial surface of the inner ring arc surface is an inner ring arc line, the inner ring arc line is formed by sequentially connecting a first section, a second section and a third section, the first section is an arc line with a corresponding radius of 29.3mm, the second section is an arc line with a corresponding radius of 41mm, the third section is an arc line with a corresponding radius of 29.3mm, and the first section and the third section are symmetrically arranged, the circle center corresponding to the first section and the circle center corresponding to the third section are symmetrically arranged along the circle center corresponding to the second section, one side of the inner ring facing the outer ring is provided with a concave outer ring arc surface, a line cut by any radial surface of the outer ring arc surface is an outer ring arc line, the outer ring arc line is formed by sequentially connecting a fourth section, a fifth section and a sixth section, the fourth section is a corresponding arc line with the radius of 57.2mm, the fifth section is a corresponding arc line with the radius of 100.6mm, the sixth section is a corresponding arc line with the radius of 57.2mm, the fourth section and the sixth section are symmetrically arranged, the circle center corresponding to the fourth section and the circle center corresponding to the sixth section are symmetrically arranged along the circle center corresponding to the fifth section, the blades are provided with blade outer ring ends connected to the inner ring arc surface and blade inner ring ends connected to the outer ring arc surface.
Optionally, the arc radius of the outer ring end of the blade corresponding to the inlet side and the arc radius of the outer ring end of the blade corresponding to the outlet side are both 110.5mm, the inlet angle of the outer ring end of the blade is 80 ° ± 5 ° and the outlet angle is 48 ° ± 2 °, the length of the streamline of the outer ring end of the blade is 49.1mm, the thickness of the outer ring end of the blade corresponding to the inlet side is 8.36mm ± 1mm, and the thickness of the outer ring end of the blade corresponding to the outlet side is 1.27mm ± 1 mm.
Optionally, the arc radius of the inner ring end of the blade corresponding to the inlet side and the arc radius of the inner ring end of the blade corresponding to the outlet side are both 74.4mm, the inlet angle of the inner ring end of the blade is 130 ° ± 5 °, the outlet angle is 33 ° ± 2 °, the length of the streamline of the inner ring end of the blade is 64.6mm, the thickness of the inner ring end of the blade corresponding to the inlet side is 8.64mm ± 1mm, and the thickness of the inner ring end of the blade corresponding to the outlet side is 1.2mm ± 1 mm.
Optionally, the end surface of the blade corresponding to the inlet side is in arc transition with the side surface of the blade.
Optionally, an end surface of the vane corresponding to the outlet side is in arc transition with a side surface of the vane.
Optionally, a projection of the end face of the blade outer ring end in a plane of the end face of the blade inner ring end falls within the end face of the blade inner ring end.
Optionally, the outer ring, the inner ring and the cascade are of an aluminum alloy integrally-formed structure.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: the outer ring and the inner ring of the guide wheel are of segmented arc structures, the width of the guide wheel is shortened, the guide wheel blade is of a space streamline structure, internal impact loss is reduced, the projection of the end face of the outer ring end of the blade falls into the end face of the inner ring end of the blade, the die drawing is easy, the manufacturability of the blade is improved, the capacity of the hydraulic torque converter adopting the guide wheel structure is improved, and therefore the performance of the hydraulic torque converter is improved.
Drawings
FIG. 1 is a schematic view of a guide wheel structure of a hydraulic torque converter of an engineering machine according to the present invention;
FIG. 2 is an axial cross-sectional view of a construction machine torque converter stator structure according to the present invention;
FIG. 3 is a drawing showing the radius of each arc line in the guide wheel structure of the torque converter of the construction machine according to the present invention;
FIG. 4 is a first schematic view of a blade in a guide wheel structure of a hydraulic torque converter of an engineering machine according to the present invention;
FIG. 5 is a schematic view of a second blade in the guide wheel structure of the hydraulic torque converter of the construction machine according to the present invention;
FIG. 6 is a schematic projection view of a blade in a guide wheel structure of a hydraulic torque converter of an engineering machine according to the present invention;
FIG. 7 is an expanded view of the idler taken along a design streamline profile.
In the drawings: 1-outer ring, 11-inner ring cambered surface, 111-first section, 112-second section, 113-third section,
2-inner ring, 21-outer ring cambered surface, 211-fourth section, 212-fifth section, 213-sixth section,
3-cascade, 31-blade, 311 blade outer ring end, 312 blade inner ring end.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
As shown in fig. 1 to 6, the guide wheel structure of the hydraulic torque converter of the construction machinery of the present embodiment includes an outer ring 1 and an inner ring 2 which are concentrically arranged, and a cascade 3 connected between the outer ring 1 and the inner ring 2, a circular cavity is formed between the outer ring 1 and the inner ring 2, the cascade 3 includes n blades 31 which are uniformly arranged in the circumferential direction, n is equal to or greater than 12 and equal to or less than 16, n is an integer, the present embodiment adopts a form of 14 blades 31, that is, n =14, a fluid flow channel having an inlet and an outlet is formed between adjacent blades 31, one side of the outer ring 1 facing the inner ring 2 has an arched inner ring arc surface 11, a line obtained by cutting any radial surface of the inner ring arc surface 11 is an outer ring 1 arc line, the outer ring 1 arc line is formed by sequentially connecting a first section 111, a second section 112 and a third section 113, the first section 111 is a corresponding arc line with a radius of 29.3mm, the second section 112 is a corresponding arc line with a radius, the third segment 113 is a corresponding arc line with a radius of 29.3mm, the first segment 111 and the third segment 113 are symmetrically arranged, the circle center corresponding to the first segment 111 and the circle center corresponding to the third segment 113 are symmetrically arranged along the circle center corresponding to the second segment 112, the vertical distance between the corresponding circle center and the symmetry axis is 6mm, one side of the inner ring 2 facing the outer ring 1 is provided with a concave outer ring arc surface 21, a line formed by cutting any radial surface of the outer ring arc surface 21 is an inner ring 2 arc line, the inner ring 2 arc line is formed by sequentially connecting a fourth segment 211, a fifth segment 212 and a sixth segment 213, the fourth segment 211 is a corresponding arc line with a radius of 57.2mm, the fifth segment 212 is a corresponding arc line with a radius of 100.6mm, the sixth segment 213 is a corresponding arc line with a radius of 57.2mm, the fourth segment 211 and the sixth segment 213 are symmetrically arranged, the circle center corresponding to the fourth segment 211 and the circle center corresponding to the sixth segment 213 are symmetrically arranged along the circle center corresponding to the fifth segment 212, and the vertical distance from the corresponding circle center to the symmetry axis is 6mm, and the blade 31 is provided with a blade outer ring end 311 connected to the inner ring arc surface 11 and a blade inner ring end 312 connected to the outer ring arc surface 21.
Referring to FIG. 1, the direction of flow is into the plane of the paper.
Furthermore, the arc radius of the blade outer ring end 311 corresponding to the inlet side and the arc radius of the blade outer ring end corresponding to the outlet side are both 110.5mm, the inlet angle of the blade outer ring end 311 is 80 ° ± 5 °, the outlet angle is 48 ° ± 2 °, the streamline length of the blade outer ring end 311 is 49.1mm, the thickness of the blade outer ring end 311 corresponding to the inlet side is 8.36mm ± 1mm, and the thickness of the blade outer ring end 311 corresponding to the outlet side is 1.27mm ± 1 mm; the arc radius of the blade inner ring end 312 corresponding to the inlet side and the arc radius of the blade inner ring end corresponding to the outlet side are both 74.4mm, the inlet angle of the blade inner ring end 312 is 130 degrees +/-5 degrees, the outlet angle is 33 degrees +/-2 degrees, the streamline length of the blade inner ring end 312 is 64.6mm, the thickness of the blade inner ring end 312 corresponding to the inlet side is 8.64mm +/-1 mm, and the thickness of the blade inner ring end corresponding to the outlet side is 1.2mm +/-1 mm. Referring to fig. 7, wherein: β n1 is the inlet angle, β n2 is the outlet angle, Rn1 is the inlet radius, Rn2 is the outlet radius, δ n1 is the inlet thickness, δ n2 is the outlet thickness.
Moreover, the end surface of the blade 31 corresponding to the inlet side is in arc transition with the side surface of the blade 31; the end surface of the corresponding outlet side of the blade 31 and the side surface of the blade 31 are in arc transition, so that the impact loss is reduced; the projection of the end face of the blade outer ring end 311 in the plane of the end face of the blade inner ring end 312 falls in the end face of the blade inner ring end 312, so that the die drawing difficulty is reduced, and the yield is improved; the outer ring 1, the inner ring 2 and the blade grids 3 are of an aluminum alloy integrated structure.
The original characteristic parameters of the hydraulic torque converter adopting the guide wheel structure are shown in the following table:
original characteristic parameter table of torque converter
| i | K | Mbg（Nm） | η |
| 0 | 2.171 | 321.541 | 0 |
| 0.1 | 2.031 | 326.765 | 20.3％ |
| 0.2 | 1.892 | 326.207 | 37.8％ |
| 0.3 | 1.757 | 324.081 | 52.7％ |
| 0.4 | 1.612 | 318.259 | 64.5％ |
| 0.5 | 1.484 | 302.689 | 74.2％ |
| 0.6 | 1.336 | 277.355 | 80.2％ |
| 0.7 | 1.200 | 236.126 | 84.0％ |
| 0.8 | 1.050 | 191.457 | 84.0％ |
| 0.9 | 0.913 | 136.262 | 82.2％ |
| 1.0 | 0.631 | 32.142 | 63.1％ |
Known from the original characteristic parameter table of the hydraulic torque converter, K is under the stall condition0=2.171, Mbg =321.5n.m, torque converter maximum efficiency 84%, high efficiency zone close to 2; in the low speed ratio (0-0.4) interval, the hydraulic torque converter is approximately not penetrated, and in the 0.5-1 speed ratio interval, the hydraulic torque converter is penetrated. When the hydraulic torque converter and the engine work together in a low speed ratio range, if the external load changes, the hydraulic torque converter can adapt to the load change by adjusting the speed ratio due to the non-penetration characteristic, and the working condition of the engine cannot change greatly, so that the engine can be ensuredThe machine always works in the best state, and further the power performance and the economical efficiency of the whole machine are improved.
Compared with the prior art, the advantage of the engineering machine tool torque converter guide wheel of this embodiment lies in:
the outer ring and the inner ring of the guide wheel structure designed by the invention both adopt a segmented arc structure, the width of the guide wheel is shortened, the guide wheel blade adopts a space streamline structure, the internal impact loss is reduced, the projection of the end surface of the outer ring end of the blade falls in the end surface of the inner ring end of the blade, the die drawing is easy, the manufacturability of the blade is improved, the capacity of the hydraulic torque converter adopting the guide wheel structure is improved, the mixed penetration characteristic is realized, and the use requirement of the working condition of a grader is met.
The above detailed description should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The guide wheel structure of the hydraulic torque converter of the engineering machinery is characterized by comprising an outer ring and an inner ring which are arranged concentrically and a cascade connected between the outer ring and the inner ring, wherein a circular cavity is formed between the outer ring and the inner ring, the cascade comprises n blades which are uniformly arranged in the circumferential direction, n is more than or equal to 12 and less than or equal to 16, n is an integer, a liquid flow channel with an inlet and an outlet is formed between the adjacent blades,
one side of the outer ring, which faces the inner ring, is provided with an arched inner ring arc surface, a line cut by any radial surface of the inner ring arc surface is an inner ring arc line, the inner ring arc line is formed by sequentially connecting a first section, a second section and a third section, the first section is a corresponding arc line with the radius of 29.3mm, the second section is a corresponding arc line with the radius of 41mm, the third section is a corresponding arc line with the radius of 29.3mm, the first section and the third section are symmetrically arranged, the circle center corresponding to the first section and the circle center corresponding to the third section are symmetrically arranged along the circle center corresponding to the second section,
one side of the inner ring, which faces the outer ring, is provided with a concave outer ring arc surface, the outer ring arc surface is formed by sequentially connecting a fourth section, a fifth section and a sixth section, the fourth section is a corresponding arc line with the radius of 57.2mm, the fifth section is a corresponding arc line with the radius of 100.6mm, the sixth section is a corresponding arc line with the radius of 57.2mm, the fourth section and the sixth section are symmetrically arranged, the circle center corresponding to the fourth section and the circle center corresponding to the sixth section are symmetrically arranged along the circle center corresponding to the fifth section,
the blades are provided with blade outer ring ends connected to the inner ring arc surface and blade inner ring ends connected to the outer ring arc surface.
2. The guide wheel structure of the hydraulic torque converter of engineering machinery according to claim 1, wherein the arc radius of the outer ring end of the blade corresponding to the inlet side and the arc radius of the outer ring end corresponding to the outlet side are both 110.5mm, the inlet angle of the outer ring end of the blade is 80 ° ± 5 °, the outlet angle is 48 ° ± 2 °, the streamline length of the outer ring end of the blade is 49.1mm, the thickness of the outer ring end of the blade corresponding to the inlet side is 8.36mm ± 1mm, and the thickness of the outer ring end corresponding to the outlet side is 1.27mm ± 1 mm.
3. The guide wheel structure of the hydraulic torque converter of engineering machinery according to claim 1, wherein the arc radius of the blade inner ring end corresponding to the inlet side and the arc radius of the blade inner ring end corresponding to the outlet side are both 74.4mm, the inlet angle of the blade inner ring end is 130 ° ± 5 °, the outlet angle is 33 ° ± 2 °, the streamline length of the blade inner ring end is 64.6mm, the thickness of the blade inner ring end corresponding to the inlet side is 8.64mm ± 1mm, and the thickness of the blade inner ring end corresponding to the outlet side is 1.2mm ± 1 mm.
4. The guide wheel structure of the hydraulic torque converter of engineering machinery as claimed in claim 1, wherein the end surface of the blade corresponding to the inlet side is in arc transition with the side surface of the blade.
5. The guide wheel structure of the hydraulic torque converter of engineering machinery as claimed in claim 1, wherein the end surface of the blade corresponding to the outlet side is in arc transition with the side surface of the blade.
6. The guide wheel structure for the hydraulic torque converter of engineering machinery according to claim 1, wherein a projection of an end face of the blade outer ring end in a plane in which an end face of the blade inner ring end is located falls within an end face of the blade inner ring end.
7. The guide wheel structure of the hydraulic torque converter of engineering machinery as claimed in claim 1, wherein the outer ring, the inner ring and the cascade are formed integrally of aluminum alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110774105.2A CN113374850B (en) | 2021-07-08 | 2021-07-08 | Guide wheel structure of hydraulic torque converter of engineering machinery |
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| CN202110774105.2A CN113374850B (en) | 2021-07-08 | 2021-07-08 | Guide wheel structure of hydraulic torque converter of engineering machinery |
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| CN113374850B CN113374850B (en) | 2023-12-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2931943Y (en) * | 2006-07-20 | 2007-08-08 | 中国船舶重工集团公司第七一一研究所 | Cascade structure of hydrodynamic torque-converter used in bulldozer |
| WO2007110025A2 (en) * | 2006-03-24 | 2007-10-04 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Blade wheel or guide wheel for a hydrodynamic torque converter, method for producing a guide wheel of said type, and hydrodynamic torque converter having a guide wheel of said type |
| CN201190773Y (en) * | 2008-03-21 | 2009-02-04 | 常林股份有限公司 | Hydrodynamic torque converter cascade for engineering machinery |
| EP2146115A1 (en) * | 2008-07-19 | 2010-01-20 | ZF Friedrichshafen AG | Hydrodynamic torque converter |
| CN204186916U (en) * | 2014-10-17 | 2015-03-04 | 广西柳工机械股份有限公司 | Hydraulic single-turbine torque converter |
| CN106202711A (en) * | 2016-07-08 | 2016-12-07 | 同济大学 | The parametric method of fluid torque-converter runner model |
-
2021
- 2021-07-08 CN CN202110774105.2A patent/CN113374850B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007110025A2 (en) * | 2006-03-24 | 2007-10-04 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Blade wheel or guide wheel for a hydrodynamic torque converter, method for producing a guide wheel of said type, and hydrodynamic torque converter having a guide wheel of said type |
| CN2931943Y (en) * | 2006-07-20 | 2007-08-08 | 中国船舶重工集团公司第七一一研究所 | Cascade structure of hydrodynamic torque-converter used in bulldozer |
| CN201190773Y (en) * | 2008-03-21 | 2009-02-04 | 常林股份有限公司 | Hydrodynamic torque converter cascade for engineering machinery |
| EP2146115A1 (en) * | 2008-07-19 | 2010-01-20 | ZF Friedrichshafen AG | Hydrodynamic torque converter |
| CN204186916U (en) * | 2014-10-17 | 2015-03-04 | 广西柳工机械股份有限公司 | Hydraulic single-turbine torque converter |
| CN106202711A (en) * | 2016-07-08 | 2016-12-07 | 同济大学 | The parametric method of fluid torque-converter runner model |
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