WO2015158902A2 - Coussinet pour un compresseur d'air d'un système d'amortissement pneumatique et compresseur à piston - Google Patents

Coussinet pour un compresseur d'air d'un système d'amortissement pneumatique et compresseur à piston Download PDF

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Publication number
WO2015158902A2
WO2015158902A2 PCT/EP2015/058404 EP2015058404W WO2015158902A2 WO 2015158902 A2 WO2015158902 A2 WO 2015158902A2 EP 2015058404 W EP2015058404 W EP 2015058404W WO 2015158902 A2 WO2015158902 A2 WO 2015158902A2
Authority
WO
WIPO (PCT)
Prior art keywords
connecting rod
piston
compressor
oscillating
oscillating piston
Prior art date
Application number
PCT/EP2015/058404
Other languages
German (de)
English (en)
Other versions
WO2015158902A3 (fr
Inventor
Uwe Folchert
Original Assignee
Continental Teves Ag & Co. Ohg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Publication of WO2015158902A2 publication Critical patent/WO2015158902A2/fr
Publication of WO2015158902A3 publication Critical patent/WO2015158902A3/fr

Links

Classifications

    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/04—Connecting-rod bearings; Attachments thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/053—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with an actuating element at the inner ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F04B39/041—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod
    • F04B39/042—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod sealing being provided on the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F04B39/041—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod
    • F04B39/044—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod sealing with a rolling diaphragm between piston and cylinder
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/44—Centrifugal pumps

Definitions

  • the invention relates to a connecting rod bearing, in particular for air supply units of air spring systems, comprising a crankpin and a plurality of oscillating piston, and a reciprocating compressor.
  • a multi-piston compressor in radial design is known.
  • a central connecting element is arranged, which serves to receive the respective piston rods.
  • the piston rods are movably mounted, but a piston rod is designed to be rigid as part of the connecting element.
  • the crank pin is arranged in a recess of a crank arm, which has a further crank pin and can be driven by a motor of the multi-piston compressor.
  • the ends of the movably mounted on the connecting element piston rods are formed such that they fit and after Keyring ⁇ sel-lock principle to respective bores on the connecting member to be inserted there. This is disadvantageous because the individual bearings of the piston rods must be put together with a high assembly cost. In addition, the construction requires a large amount of space.
  • a further object of the invention is to provide a connecting rod bearing as well as a piston compressor which requires as little installation space as possible.
  • the connecting rod bearing is formed by a connecting rod journal and a plurality of oscillating pistons, wherein the oscillating pistons are mounted centrally on the connecting rod journal via a roller bearing.
  • the central bearing of all oscillating pistons on a single connecting rod allows the oscillating pistons with their cylinders to be arranged in one plane. This results in a cost-effective and space-saving concept of a compressor of an air supply unit for air spring systems in power ⁇ vehicles.
  • the connecting rod bearing is used in a compressor for an air supply unit of an air spring system.
  • the oscillating pistons are preferably mounted on the rolling bearing via a respective sliding bearing.
  • a turned to the oscillating piston outer surface of the rolling bearing as a lubricant ⁇ surface and facing the connecting-rod pin end of the respective swing piston is used serves as the mating surface.
  • the outer surface of the outer ring of the rolling bearing serves as a sliding surface.
  • the rolling bearing facing the end of the oscillating piston is preferably made of a low-friction plastic. Due to the oscillatory motion, a sliding movement of the oscillating pistons on the rolling bearing of e.g. plus / minus 8 to 9 degrees. By means of the choice of plastic and the low sliding movement results in a very low friction for the sliding bearing.
  • separate Gleitschalt can be attached to the rolling bearing facing ends of the oscillating piston.
  • the oscillating piston via a securing element, preferably a locking ring, held together on the rolling bearing.
  • a securing element preferably a locking ring
  • a receptacle for the securing element is provided on each oscillating piston, wherein this is formed in the direction of the connecting rod.
  • the invention offers the advantage that fewer components are needed. Another advantage of the invention is that all pistons can be made identical. This eliminates different piston variants, which reduces the manufacturing cost.
  • the conrod bearing is preferably used in reciprocating compressors, which are used for air supply of air spring systems in motor vehicles.
  • the invention also relates to a reciprocating compressor having a connecting rod bearing according to the invention.
  • the piston compressor comprises an electric motor which drives a drive shaft, wherein the drive shaft drives a balance weight, on which the crankpin is arranged, wherein the crankpin drives the oscillating piston.
  • the connecting rod is fixedly connected to the balance weight or formed integrally therewith. Further preferred embodiments of the invention will become apparent from the subclaims and the following description of exemplary embodiments with reference to the figures.
  • FIG. 2 shows the exemplary two-piston compressor of FIG. 1 in side view
  • Fig. 3 shows an exemplary three-piston star compressor of an exemplary conrod bearing in plan view and Fig. 4 shows the exemplary three-piston star compressor of Fig. 3 in side view.
  • Fig. 1 shows a first embodiment of a piston compressor.
  • the exemplary two-piston compressor is shown in plan view and is preferably used for compressing air in air spring systems of vehicles.
  • the basic structure and the basic function of a compressor are well known.
  • a rolling bearing 2 is arranged.
  • oscillating piston 1 are mounted centrally movable bearings.
  • the rolling bearing 2 comprises an outer ring, an inner ring and arranged between the outer and inner ring rolling elements, wherein the inner ring is fixed to the connecting rod 6.
  • the oscillating piston 1 are held on the outer ring of the rolling bearing 2 by means of a securing element 7.
  • the fuse ⁇ element 7 is formed according to the example as a locking ring.
  • the two oscillating pistons 1 are mounted as friction-free as possible on a sliding bearing on the rolling bearing.
  • the outer surface of the outer ring of the rolling bearing 2 and the connecting rod 6 facing the end of the oscillating piston 1 serves as a counter sliding surface 3b. Furthermore, the two corresponding cylinder heads 8 of the oscillating piston 1 are shown.
  • FIG. 2 the exemplary two-piston compressor of FIG. 1 is shown in side view.
  • An electric motor 9 drives a drive shaft 4 in this case.
  • a balance weight 5 and the center of the drive shaft radially offset crank pin 6 are arranged.
  • the two oscillating piston 1 are movably mounted on the roller bearing 2. In this case, the oscillating piston 1 via the securing element 7 on the rolling bearing. 2 .
  • the conrod 6 facing the part of the oscillating piston 1 is formed such that it is formed on one side laterally of the rolling bearing 2 and a receptacle 10 is provided for the securing element 7.
  • the receptacles 10 can slide on the securing element 7.
  • Drive shaft 4 drives with the balance weight 5 the staggered connecting rod 6, which thus performs a circular movement about the drive shaft 4.
  • roller bearing 2 also performs the circular motion. Due to the combined storage by means of roller bearings 2 and slide bearings 3a, 3b and the leadership of the oscillating piston 1 in their cylinders, the circular motion of the connecting rod 6 is converted into a swinging movement of the oscillating piston 1.
  • conrod 6 In operation, conrod 6 must absorb different forces in two directions. During the upward movement of the oscillating piston 1 creates a compression force. As a result, a compressive force acts on the oscillating piston 1, which is supported on the rolling bearing 3a on the rolling bearing. During the downward movement, a suction force is created on the oscillating piston 1. The resulting tensile force is absorbed by means of the central securing element 7. Due to the fact that the tensile force is less than the compression force, a small sliding surface of the securing element 7 is sufficient to absorb the tensile force.
  • Fig. 3 shows a second embodiment of a piston ⁇ compressor.
  • the exemplary three-piston star compressor is shown in plan view and is preferably for compressing air in air spring systems of vehicles used.
  • 3 shows three cylinder heads 8 and three oscillating piston 1.
  • the oscillating piston 1 are held together by means of securing element 7 on the rolling bearing 2.
  • FIG. 4 for example of modern Dreikol ⁇ ben-Star compressor of FIG. Is shown in the side view 3.
  • An electric motor 9 drives drive shaft 4 with balance weight 5 at.
  • a rotary motion is transmitted to rolling bearings 2.
  • the outer ring of the rolling bearing 2 serves as a sliding surface 3a.
  • the counter sliding surface 3b is formed at the inner end of the respective oscillating piston 1.
  • Figure 4 illustrates the support of oscillating piston 1 on the rolling bearing 2 by means of securing element. 7
  • the arrangement and mode of operation of the conrod bearing of the three-piston star compressor essentially corresponds to that of the two-piston compressor which has been described with reference to FIGS. 1 and 2.
  • the two pistons of the first example are replaced from ⁇ guide by the three pistons of the second exporting ⁇ approximately example.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne un coussinet, notamment pour des unités d'alimentation en air de systèmes d'amortissement pneumatique, comprenant un maneton et plusieurs pistons oscillants, ces derniers étant montés de manière centrale sur le maneton par l'intermédiaire d'un palier à roulement. L'invention concerne également un compresseur à piston équipé d'un tel coussinet.
PCT/EP2015/058404 2014-04-17 2015-04-17 Coussinet pour un compresseur d'air d'un système d'amortissement pneumatique et compresseur à piston WO2015158902A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102014207512.2 2014-04-17
DE102014207512 2014-04-17
DE102015206868.4 2015-04-16
DE102015206868.4A DE102015206868A1 (de) 2014-04-17 2015-04-16 Pleuellagerung für einen Luftverdichter eines Luftfedersystems sowie Kolbenkompressor

Publications (2)

Publication Number Publication Date
WO2015158902A2 true WO2015158902A2 (fr) 2015-10-22
WO2015158902A3 WO2015158902A3 (fr) 2015-12-03

Family

ID=54250108

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/058404 WO2015158902A2 (fr) 2014-04-17 2015-04-17 Coussinet pour un compresseur d'air d'un système d'amortissement pneumatique et compresseur à piston

Country Status (2)

Country Link
DE (1) DE102015206868A1 (fr)
WO (1) WO2015158902A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6281853B1 (ja) * 2017-10-03 2018-02-21 有限会社ケイ・アールアンドデイ ロータリ式シリンダ装置
CN108843682A (zh) * 2018-07-06 2018-11-20 安徽思源三轻智能制造有限公司 一种高强度空压机连杆

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683422A (en) * 1950-05-19 1954-07-13 Jr Albert Z Richards Rotary engine or compressor
GB747449A (en) * 1953-04-02 1956-04-04 Ronald Percival Sewell Multi-cylinder pump
US2936632A (en) * 1955-06-27 1960-05-17 John E Palmer Anti-friction drive means
CH678881A5 (fr) * 1989-03-23 1991-11-15 Sulzer Ag
KR101432324B1 (ko) 2006-06-08 2014-08-20 래리 앨빈 슈츨 왕복운동식 압축기 또는 펌프 및 왕복운동식 압축기를 구비하는 휴대가능한 공구 전력 공급 시스템
US8128382B2 (en) * 2007-07-11 2012-03-06 Gast Manufacturing, Inc. Compact dual rocking piston pump with reduced number of parts

Also Published As

Publication number Publication date
DE102015206868A1 (de) 2015-10-22
WO2015158902A3 (fr) 2015-12-03

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