CN103115139B - Lubricating oil inner cavity self-filtering speed reducer used on lorry-mounted crane lifting hoist - Google Patents
Lubricating oil inner cavity self-filtering speed reducer used on lorry-mounted crane lifting hoist Download PDFInfo
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- CN103115139B CN103115139B CN201310040881.5A CN201310040881A CN103115139B CN 103115139 B CN103115139 B CN 103115139B CN 201310040881 A CN201310040881 A CN 201310040881A CN 103115139 B CN103115139 B CN 103115139B
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Abstract
The invention discloses a lubricating oil inner cavity self-filtering speed reducer used on a lorry-mounted crane lifting hoist, and relates to engineering machinery. A two-way inner gearing gear pump is arranged in a large flange inner hole. The gear pump is connected with a brake connection shaft through an internal spline to obtain power. The gear pump is provided with an oil inlet A and an oil outlet B. When the lifting hoist goes up and down, the gear pump is steered along the positive direction and the negative direction. For the gear pump, under the control of a one-way valve, functions of the oil inlet A and the oil outlet B change. Two filters are connected outside the speed reducer to filter lubricating oil in an uninterrupted mode. The filtered lubricating oil enters into a variable speed component (11) box body through a pipe. The filtering effect is good, and the service life of the speed reducer is prolonged greatly. The early failure response rate is reduced effectively. The volume of the speed reducer is not increased basically. The structure is compact, the manufacture and the installation are convenient, the cost is low, and the popularization is convenient.
Description
Technical field
The present invention relates to a kind of engineering machinery, be specifically related to the lubricant oil inner chamber inherent filtration formula speed reducer that a kind of mobile crane hoisting winding uses.Also may be used for the hoisting of the engineering machinery such as crawler crane, excavator, luffing, revolution and traveling retarding mechanism.
Background technique
The speed reducer that mobile crane hoisting winding uses, gear in the course of the work, due to the fricative iron filings of gears meshing, scale etc., if removed not in time, affects the life-span of bearing and rotary oil seal.Especially, during heavy duty, bearing enclose and gear can be made to occur spot corrosion too early, accelerate the defects such as tooth surface abrasion.The speed reducer that current mobile crane hoisting winding uses, the lubricant oil of pinion cavity adopts the way of periodic replacement, needs to shut down when its deficiency is and changes oil, and excessive fuel consumption recovery operation amount is large, and lubricating oil consumption is large, improves operating cost.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the lubricant oil inner chamber inherent filtration formula speed reducer that a kind of mobile crane hoisting winding uses, at external two filters of speed reducer, by two-way crescent gear pump pump oil, controlled the break-make of itself and filler opening by one-way valve, make lubricant oil circulating filtration incessantly when speed reducer works.
The present invention is achieved through the following technical solutions: the lubricant oil inner chamber inherent filtration formula speed reducer that a kind of mobile crane hoisting winding uses, and it comprises: large flange dish, brake assemblies, braking coupling shaft, speed change assembly and oil hydraulic motor.Described brake assemblies is self-coupling type face contact friction sheet arrestment mechanism, and the moving plate of brake strip is connected with braking coupling shaft by spline, and the still of brake strip is connected with large flange dish.Described speed change assembly is planet-gear speed reducer, and the output terminal of star gear reduction unit is bull gear, and described bull gear one end connects hoisting winding reel, and the bull gear the other end is bolted on bearing support.Described bearing support is connected with large flange dish with large bearing by outside framework oil seal; Braking coupling shaft one end is connected with the output shaft of oil hydraulic motor by internal spline, and the braking coupling shaft the other end is connected with the central gear of planetary gear reducing mechanism by internal spline.It is characterized in that: in the endoporus of described large flange dish end, two-way crescent gear pump is set.Described two-way crescent gear pump is made up of small gear, pump cover, internal gear and the pump housing.Described pump cover and pump housing two ends are fixed on large flange dish with hole back-up ring respectively.Described small gear is connected by internal spline with braking coupling shaft and obtains power; Described two-way crescent gear pump has oil inlet and outlet A and oil inlet and outlet B, and along with the change of gear pump positive and reverse steering, oil inlet and outlet A and B function change thereupon; Oil pump filler opening, oil pump return opening, oil pump oil outlet A and oil pump oil outlet B are set in large flange dish end.Large flange dish inner chamber also arranges pump oil one-way valve A and pump oil one-way valve B.Described oil pump filler opening is connected the oil inlet and outlet A of two-way crescent gear pump with triplate line by pump oil one-way valve A; Oil pump filler opening is also connected the oil inlet and outlet B of two-way crescent gear pump with triplate line by pump oil one-way valve B; The oil inlet and outlet A of oil pump is connected by the filler opening of pipeline with filter A; The oil inlet and outlet B of oil pump is connected with the filler opening of filter B by pipeline.Described filter A and the oil outlet of filter B are connected to oil pump return opening by pipeline, and described oil pump return opening enters speed change assembly casing by pipeline.
Described filter A and filter B are arranged on outside machine.Difference mounting filter one-way valve on the in-line of filter A and filter B, described filter one-way valve stops the oil return after filter to oil pump filler opening.
The invention has the beneficial effects as follows:
1, two-way crescent gear pump is adopted, gear pump has two oil outlets, connect two filters respectively, the break-make of itself and filler opening is controlled by one-way valve, when making the positive and negative work of motor, two filters are continual to be filtered lubricant oil, good filtration effect, the working life of speed reducer significantly improves, and effectively reduces initial failure feedback rates.
2, two-way crescent gear pump and speed reducer become one, and enough become the oil circuit that closed, make speed reducer while use, realize inner chamber lubricant oil and filtered.Speed reducer volume does not increase substantially, and result is compact, make, easy for installation, with low cost, be convenient to promote the use of.
3, without the need to regularly replacing lubricant oil, only needing periodic cleaning filter core or more renew cartridge, reducing user cost.
Accompanying drawing explanation
The present invention is further described with enforcement with reference to the accompanying drawings below.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is asphalt principle figure of the present invention.
Fig. 4 is the oil circuit schematic diagram of motor when turning clockwise.
Fig. 5 is the oil circuit schematic diagram of motor when being rotated counterclockwise.
In figure: 1, oil hydraulic motor, 2, two-way crescent gear pump, 2-1, small gear, 2-2, pump cover, 2-3, internal gear, 2-4, the pump housing, 3, hole back-up ring, 4, large flange dish, 5, adjustment packing ring, 6, outside framework oil seal, 7, large bearing, 8, bearing support, 9, brake assemblies, 9-1, brake strip, 10, braking coupling shaft, 11, speed change assembly, 12, bull gear, 13, oil pump filler opening, 14, pump oil one-way valve A, 15, pump oil one-way valve B, 16, oil pump oil outlet A, 17, oil pump oil outlet B, 18, oil pump return opening, 19, filter A, 20, filter B, 21, filter one-way valve.
Embodiment
As shown in Figure 1 and Figure 2: the lubricant oil inner chamber inherent filtration formula speed reducer that a kind of mobile crane hoisting winding uses, it comprises: large flange dish 4, brake assemblies 9, braking connection 10, speed change assembly 11 and oil hydraulic motor 1.Described brake assemblies 9 is self-coupling type face contact friction sheet arrestment mechanism, and the moving plate of brake strip 9-1 is connected with braking coupling shaft 10 by spline, and the still of brake strip 9-1 is connected with large flange dish 4.Described speed change assembly 11 is planet-gear speed reducer, and the output terminal of star gear reduction unit is bull gear 12, and described bull gear 12 one end connects hoisting winding reel, and bull gear 12 the other end is bolted on bearing support 8.Described bearing support 8 is connected with large flange dish 4 with large bearing 7 by outside framework oil seal 6.Braking coupling shaft 10 one end is connected by the output shaft of internal spline with oil hydraulic motor 1, and braking coupling shaft 10 the other end is connected with the central gear of planetary gear reducing mechanism by internal spline.It is characterized in that: in the endoporus of described large flange dish 4 end, two-way crescent gear pump 2 is set; Described two-way crescent gear pump 2 is made up of small gear 2-1, pump cover 2-2, internal gear 2-3 and pump housing 2-4.Described pump cover 2-2 and pump housing 2-4 two ends are fixed on large flange dish 4 with hole back-up ring 3 respectively.Described small gear 2-1 is connected by internal spline with braking coupling shaft 10 and obtains power.Described two-way crescent gear pump 2 has oil inlet and outlet A and oil inlet and outlet B, along with the change of gear pump positive and reverse steering,
As shown in Figure 1, Figure 2, Figure 3 shows: large flange dish 4 inner chamber also arranges pump oil one-way valve A14 and pump oil one-way valve B15.Described oil pump filler opening 13 is connected the oil inlet and outlet A of two-way crescent gear pump 2 with triplate line by pump oil one-way valve A14; Oil pump filler opening 13 is also connected the oil inlet and outlet B of two-way crescent gear pump 2 with triplate line by pump oil one-way valve B15; The oil inlet and outlet A of oil pump is connected by the filler opening of pipeline with filter A19; The oil inlet and outlet B of oil pump is connected by the filler opening of pipeline with filter B 20.Described filter A19 and the oil outlet of filter B 20 are connected to oil pump return opening 18 by pipeline, and described oil pump return opening 18 enters speed change assembly 11 casing by pipeline.
Described filter A19 and filter B 20 are arranged on outside machine.Difference mounting filter one-way valve 21 on the in-line of filter A19 and filter B 20, described filter one-way valve 21 stops the oil return after filter to oil pump filler opening 13.
As shown in Figure 1, Figure 2, Figure 3 shows: in using process, when oil hydraulic motor 1 rotates, motor drive shaft drives braking coupling shaft 10 to rotate, because the small gear 2-1 of two-way crescent gear pump 2 is connected with braking coupling shaft 14 by spline with the central gear of speed change assembly 11, oil hydraulic motor 1 drives two-way crescent gear pump 2 and speed change assembly 1 run-in synchronism.
As shown in Figure 4: when oil hydraulic motor 1 rotates clockwise, two-way crescent gear pump 2 also rotates in the direction of the clock.The oil inlet and outlet A side of gear pump is oil sucting cavity, and this place's fluid forms negative pressure, pump oil one-way valve A14 is opened, makes the filtration one-way valve 21 in filter A19 close simultaneously, make fluid enter oil sucting cavity; Oil inlet and outlet B15 side is pumping cavity, and pump oil one-way valve B15 closes under the effect of pressure oil, and the oil circuit between filler opening 13 and oil inlet and outlet B is cut off, and fluid is flowed out from oil inlet and outlet B, returns speed reducer inner chamber through filter B 20 and return opening.
As shown in Figure 5: when oil hydraulic motor 1 inhour rotates, two-way crescent gear pump 2 also rotates counter clockwise.The oil inlet and outlet B side of gear pump is oil sucting cavity, and this place's fluid forms negative pressure, pump oil one-way valve B15 is opened, makes the filtration one-way valve 21 in filter B 20 close simultaneously, make fluid enter oil sucting cavity; Oil inlet and outlet A14 side is pumping cavity, and pump oil one-way valve A14 closes under the effect of pressure oil, and the oil circuit between filler opening 13 and oil inlet and outlet A is cut off, and fluid is flowed out from oil inlet and outlet A, returns speed reducer inner chamber through filter A19 and return opening.
During oil hydraulic motor 1 positive and negative work, two filters are continual to be filtered lubricant oil, and good filtration effect, the working life of speed reducer significantly improves, and effectively reduces initial failure feedback rates.
Claims (3)
1. a lubricant oil inner chamber inherent filtration formula speed reducer mobile crane hoisting winding used, it comprises: large flange dish (4), brake assemblies (9), braking coupling shaft (10), speed change assembly (11) and oil hydraulic motor (1); Described brake assemblies (9) is self-coupling type face contact friction sheet arrestment mechanism, the moving plate of brake strip (9-1) is connected with braking coupling shaft (10) by spline, and the still of brake strip (9-1) is connected with large flange dish (4); Described speed change assembly (11) is planet-gear speed reducer, the output terminal of planet-gear speed reducer is bull gear (12), described bull gear (12) one end connects hoisting winding reel, and bull gear (12) the other end is bolted on bearing support (8); Described bearing support (8) is connected with large flange dish (4) with large bearing (7) by outside framework oil seal (6); Braking coupling shaft (10) one end is connected by the output shaft of internal spline with oil hydraulic motor (1), and braking coupling shaft (10) the other end is connected with the central gear of planet-gear speed reducer by internal spline; It is characterized in that: in the endoporus of described large flange dish (4) end, two-way crescent gear pump (2) is set; Described two-way crescent gear pump (2) is made up of small gear (2-1), pump cover (2-2), internal gear (2-3) and the pump housing (2-4); Described pump cover (2-2) and the pump housing (2-4) two ends are fixed on large flange dish (4) with hole back-up ring (3) respectively; Described small gear (2-1) is connected by internal spline with braking coupling shaft (10) and obtains power; Described two-way crescent gear pump (2) has oil inlet and outlet A and oil inlet and outlet B, and along with the change of gear pump positive and reverse steering, oil inlet and outlet A and B function change thereupon; Oil pump filler opening (13), oil pump return opening (18), oil pump oil outlet A (16) and oil pump oil outlet B (17) are set in large flange dish (4) end; Large flange dish (4) inner chamber also arranges pump oil one-way valve A (14) and pump oil one-way valve B (15); Described oil pump filler opening (13) is connected the oil inlet and outlet A of two-way crescent gear pump (2) with triplate line by pump oil one-way valve A (14); Oil pump filler opening (13) is also connected the oil inlet and outlet B of two-way crescent gear pump (2) with triplate line by pump oil one-way valve B (15); The oil inlet and outlet A of oil pump is connected by the filler opening of pipeline with filter A (19); The oil inlet and outlet B of oil pump is connected by the filler opening of pipeline with filter B (20); Described filter A (19) and the oil outlet of filter B (20) are connected to oil pump return opening (18) by pipeline, and described oil pump return opening (18) enters speed change assembly (11) casing by pipeline.
2. lubricant oil inner chamber inherent filtration formula speed reducer mobile crane hoisting winding according to claim 1 used, is characterized in that: described filter A (19) and filter B (20) are arranged on outside machine.
3. lubricant oil inner chamber inherent filtration formula speed reducer mobile crane hoisting winding according to claim 1 used, it is characterized in that: described filter A (19) and the in-line of filter B (20) distinguish mounting filter one-way valve (21), described filter one-way valve (21) stops the oil return after filter to oil pump filler opening (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040881.5A CN103115139B (en) | 2013-02-01 | 2013-02-01 | Lubricating oil inner cavity self-filtering speed reducer used on lorry-mounted crane lifting hoist |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040881.5A CN103115139B (en) | 2013-02-01 | 2013-02-01 | Lubricating oil inner cavity self-filtering speed reducer used on lorry-mounted crane lifting hoist |
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| Publication Number | Publication Date |
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| CN103115139A CN103115139A (en) | 2013-05-22 |
| CN103115139B true CN103115139B (en) | 2015-07-15 |
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| CN201310040881.5A Expired - Fee Related CN103115139B (en) | 2013-02-01 | 2013-02-01 | Lubricating oil inner cavity self-filtering speed reducer used on lorry-mounted crane lifting hoist |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246471B (en) * | 2016-12-13 | 2022-06-03 | 惠阳航空螺旋桨有限责任公司 | Lubricating device for fan reduction gearbox |
| CN109807929B (en) * | 2017-11-21 | 2021-09-17 | 沈阳新松机器人自动化股份有限公司 | Active cam type lubricating self-cleaning mechanism |
| CN114776793B (en) * | 2022-03-14 | 2023-03-28 | 无锡天昀新能源科技有限公司 | High radial load rotary speed reducer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016839A (en) * | 2007-03-07 | 2007-08-15 | 煤炭科学研究总院太原分院 | Shortwall mining forklift in underground mine |
| DE102006030791A1 (en) * | 2006-06-30 | 2008-01-03 | Zf Friedrichshafen Ag | Hydrodynamic retarder |
| CN201961935U (en) * | 2011-01-07 | 2011-09-07 | 台州长城机械制造有限公司 | Speed reducer for traction machine |
| CN203146783U (en) * | 2013-02-01 | 2013-08-21 | 徐州科源液压股份有限公司 | Self-filtration type decelerator for lubricating oil cavity for hoister of lorry-mounted crane |
-
2013
- 2013-02-01 CN CN201310040881.5A patent/CN103115139B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006030791A1 (en) * | 2006-06-30 | 2008-01-03 | Zf Friedrichshafen Ag | Hydrodynamic retarder |
| CN101016839A (en) * | 2007-03-07 | 2007-08-15 | 煤炭科学研究总院太原分院 | Shortwall mining forklift in underground mine |
| CN201961935U (en) * | 2011-01-07 | 2011-09-07 | 台州长城机械制造有限公司 | Speed reducer for traction machine |
| CN203146783U (en) * | 2013-02-01 | 2013-08-21 | 徐州科源液压股份有限公司 | Self-filtration type decelerator for lubricating oil cavity for hoister of lorry-mounted crane |
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| CN103115139A (en) | 2013-05-22 |
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