US3657972A - Crosshead arrangement for the drive mechanism of high-pressure compressors and pumps - Google Patents

Crosshead arrangement for the drive mechanism of high-pressure compressors and pumps Download PDF

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Publication number
US3657972A
US3657972A US51989A US3657972DA US3657972A US 3657972 A US3657972 A US 3657972A US 51989 A US51989 A US 51989A US 3657972D A US3657972D A US 3657972DA US 3657972 A US3657972 A US 3657972A
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US
United States
Prior art keywords
crosshead
frame
pressure compressor
parts
compressor machine
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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.)
Expired - Lifetime
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US51989A
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English (en)
Inventor
Albert Strebel
Oskar Habegger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BURGKHARDT AG MASCHF
MASCHINENFABRIK BURGKHARDT AG
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BURGKHARDT AG MASCHF
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • 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
    • 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
    • F16C5/00—Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads

Definitions

  • a second member, without crosshead pin may be disposed between the two principal parts in the region of the secondary shoe and be releasably connected to the piston rod of the other cylinder.
  • Crosshead arrangements equipped with a bypass linkage are known for this purpose wherein for the unhindered fitting and removing of the connecting rod, which is carried out through the upper frame aperture associated with the particular cylinder axis, the cylindrical crosshead pins with conical fixing ends, clamped in the main crosshead with or without clamping sleeves, are to be fitted and demounted from the side through the closable assembly apertures arranged laterally of the drive frame, without the crosshead and the cross-member constructed as a secondary crosshead having to be taken out in the process.
  • Crosshead arrangements in frame form are also known which permit fitting and demounting of the connecting rod and the crosshead pin in the case of drives having morethan two cranks in a row also.
  • crosshead arrangements each comprise an upper and a lower connecting member held together with screws, connecting the main and secondary crossheads and comprehending the circular path of the crank pin, the said member being subjected to the action of piston forces occurring during reciprocating movement.
  • the crosshead pin which is adapted to be clamped, e.g., with clamping sleeves and, separately therefrom, at the end, an intermediate member containing the piston rod or plunger coupling with plate-shaped crosshead shoes arranged on the centre axis at both sides, serving as the main crosshead, by means of bolts which hold the upper and lower connecting members together and are arranged at both sides of the crosshead pin in a horizontal plane.
  • the second intermediate member On the opposite side of the crosshead frame the second intermediate member is fixed, which also contains the piston rod or plunger coupling and has fixedly arranged plate-form crosshead shoes at both sides serving as a secondary crosshead.
  • the upper connecting member can be pulled through the upper frame aperture, thus giving an unhindered possibility of demounting the crosshead pin and connecting rod irrespective of the number of cranks in the drive frame.
  • the determining factor is the radialforce which is produced at the clamping of the crosshead pin end and acts within the housing boredivided into two halves, and the moment of force produced in the operation of the machine, determined by the maximum working piston force acting in the struts and a lever arm defined by the distance of the strut from the centre axis, taking into account the alternating stresses occuring at the time.
  • the dimensions of the bolts obtaining more particularly with high piston forces for reliably preventing spreading-out at the fixing points, and the number of such bolts result in heavy and involved constructions which, with the oscillatory movement of the crosshead frame, increase the inertia effect.
  • the connecting rod bearing at the crosshead side is also pivotably connected in a closed construction axially to the cylindrical crosshead pin, and re-adjustability is not possible in this case owing to the closed construction of the connecting rod head, nor is it possible to carry out an inspection of the crosshead pin and the crosshead pin bearing without dismantling the crosshead frame.
  • a crosshead arrangement comprises a lower part provided with two sliding shoes arranged fixedly or releasably and serving for receiving the normal force, and an upper part which is connected releasably to the said lower part, and that between the two parts there is ar ranged at the side of the main crosshead shoe the crosshead pin member which is constructed as a middle part and is connected releasably to the piston rod of the first cylinder.
  • FIG. 1 is a diagrammatic view of the crosshead frame arranged in a drive frame
  • FIG. 2 shows the crosshead pin member with a block-form middle part.
  • FIG. 1 shows a frame-form crosshead arrangement according to the invention which comprises an upper connecting part 1 and a lower connecting part 2, with a sliding shoe 3 which serves as a main crosshead guide and is arranged fixedly or releasably on the lower part of the drive frame, and a sliding shoe 4 which serves as a secondary crosshead guide and is arranged at the opposite side.
  • the crosshead pin member 5 having a block-form middle part 6, and guide studs or pins 7 fixed at both sides for pivotal connection to the forked connecting rod 16.
  • the piston rod or plunger 13 is secured axially to the end face of the block-form middle part 6 by means of the releasable coupling 14.
  • a plain block-form part 8 (i.e., one which does not have laterally arranged guide pins) is inserted, and to its end face the second piston rod or plunger 13', situated opposite from the main crosshead, is likewise releasably secured axially by means of a second coupling 14.
  • Arranging a block-form middle part 8 at the same height as the block-form middle part 6 of the crosshead pin member 5 affords the advantage from the manufacturing point of view that the bearing surfaces of the upper connecting member 1 and lower connecting member 2 can be machined in a single plane.
  • the block-form middle part 8 can be constructed with a different height from the block-form middle part 6 of the crosshead pin member 5 or the middle part 8 can be omitted entirely.
  • the upper connecting member 1 can be directly connected centrally or eccentrically of the frame to the lower connecting member 2, with appropriate formation of the connecting members.
  • the entire frame system is held together by vertically arranged fixing bolts 10 and nuts ll,or by appropriate headed screws, and force-transmitting element 9, 9 of adequate dimensions for receiving compression forces acting in the connecting struts, e.g., in the form of locating pins or keys, or disc-shaped fitting parts, are inserted between the joints of the connecting members 1 and 2 and the block-form middle parts 6 and 8 respectively.
  • the elements 9 also serve for adjustment so that the relative positions of the crosshead frame parts may be precisely determined at the assembly stage.
  • the circular part of the crank pin 18 is disposed between the two connecting struts 12.
  • the connecting struts When forked connecting rods 16 are fitted, the connecting struts are formed with an aperture 15 on the centre axis for the passage of the crank-side bearing block and bearing cap 17.
  • the aperture may be omitted when identical connecting rods articulated to the two crosshead pins 7 are fitted, in which case the struts 12 extend between the connecting rod bearing blocks and bearing caps in the crank region.
  • crosshead pin member 5 A particular advantage with this arrangement of the crosshead frame is obtained by the construction of the crosshead pin member 5.
  • the crosshead bearing in a closed construction is articulated axially to the through cylindrical crosshead pin, which is fixedly held in cylindrical bores of the side walls of the crosshead body or the connecting elements.
  • the crosshead pin member 5 has the advantage that under the action of forces its increased rigidity causes substantially reduced bending effects at the pins 7, which reduces the unilateral edge pressures in the mounting regions and in the crosshead pin bearings.
  • connection for the releasable piston rod or plunger coupling is arranged at the block-form middle part 6 of the crosshead pin member 5 in addition to the two crosshead pins 7, and thus crosshead pin member and piston rod coupling block can be regarded as a single unit, the clamping forces caused by the clamping connection with the cylindrical crosshead pins do not occur.
  • the frameform crosshead arrangement can use substantially simplified constructional elements of which good use is made, as regards force transmission.
  • the dimensions of the vertically arranged fixing bolts which serve for clamping the crosshead pin member 5 between the upper and lower connecting members 1 and 2 are in accordance with the moment of force resulting from the forces acting in the struts 12 and the spacing a between the upper edges of the block 6 and the struts 12.
  • An important advantage of the crosshead arrangement according to the invention is that with the frame-form construction the entire width of the crosshead shoes 3 and 4 can be fully utilized as a load-bearing width for sliding on the slideways, independently of the crosshead pin length.
  • a construction is obtained which makes it possible to reduce the spacings of the cylinder axes in the drive to only what is necessary for the cylinder dimensions, which gives substantial shortening of the overall lellfth in the direction of the crankshaft axis and a substantlal re uction in the moments of inertia as compared with known constructions.
  • a high-pressure compressor machine having a drive mechanism comprising a cross-head frame, a first and a second opposed cylinder each having a piston and piston rod connected to said frame, a crosshead arrangement in said frame located between said cylinders comprising a lower part, a main crosshead guide and a secondary cross-head guide spaced from one another and mounted on said lower part, an upper part, means accessible from the top surface of said upper part for releasably connecting said upper part to said lower part, a crosshead pin member forming a middle part of said main crosshead guide located between said lower and upper parts and means connecting said pin member releasably to the piston rod of said first cylinder.
  • a high-pressure compressor machine wherein a second, plain, middle part is arranged between said lower and upper parts adjacent said secondary crosshead guide and means connecting said second middle part releasably to the piston rod of said second cylinder.
  • a high-pressure compressor machine according to claim 1 wherein said connecting means connects said upper part and said lower part to one another adjacent said secondary crosshead guide.
  • a high-pressure compressor machine wherein said cylinders are horizontal and said middle parts are connected to said upper and lower parts at both sides of said crosshead frame by said connecting means which comprises vertical screw-threaded members.
  • a high-pressure compressor machine according to claim 2 wherein force-transmitting adjustable elements are interposed between said middle parts and said upper part and said lower part.
  • a high-pressure compressor machine according to claim 5 wherein said force-transmitting elements are interposed between said middle parts and said upper and said lower parts adjacent said main crosshead guide and said secondary crosshead guide.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Chairs Characterized By Structure (AREA)
  • Reciprocating Pumps (AREA)
  • Compressor (AREA)
US51989A 1969-07-04 1970-07-02 Crosshead arrangement for the drive mechanism of high-pressure compressors and pumps Expired - Lifetime US3657972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH684669A CH512017A (de) 1969-07-04 1969-07-04 Kreuzkopfeinrichtung für den mechanischen Antrieb von Hochdruck-Kompressoren oder -Pumpen

Publications (1)

Publication Number Publication Date
US3657972A true US3657972A (en) 1972-04-25

Family

ID=4315937

Family Applications (1)

Application Number Title Priority Date Filing Date
US51989A Expired - Lifetime US3657972A (en) 1969-07-04 1970-07-02 Crosshead arrangement for the drive mechanism of high-pressure compressors and pumps

Country Status (8)

Country Link
US (1) US3657972A (de)
JP (1) JPS4818162B1 (de)
BE (1) BE753004A (de)
CH (1) CH512017A (de)
DE (1) DE2032605C3 (de)
FR (1) FR2050506B1 (de)
GB (1) GB1312843A (de)
NL (1) NL142225B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230026A (en) * 1978-10-25 1980-10-28 Hartley E Dale Reciprocating piston device
US5228291A (en) * 1990-04-05 1993-07-20 Meyering Ralph A Motor with rotating mass induced vibration driving means
US5638738A (en) * 1996-01-24 1997-06-17 Ingersoll-Rand Company Air motor piston to crank linkage
US20040057842A1 (en) * 2002-09-25 2004-03-25 Hitachi Industries Co., Ltd. Reciprocating compressor
US9163617B2 (en) 2010-09-10 2015-10-20 Kmt Waterjet Systems Inc. High pressure pump including hollow stud

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826777A (zh) * 2019-01-29 2019-05-31 四川金星清洁能源装备股份有限公司 用于往复活塞式压缩机的双向十字头传动机构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR388025A (fr) * 1908-03-10 1908-07-31 Auguste Maurice Eudelin Pompe à air
US957920A (en) * 1910-01-19 1910-05-17 William J Wassmann Cross-head.
US1362422A (en) * 1919-09-29 1920-12-14 Miles D Joyner Crosshead
US1371745A (en) * 1920-07-20 1921-03-15 Joseph F Eischeid Adjustable crosshead
US2002200A (en) * 1931-10-03 1935-05-21 Cooper Bessemer Corp Engine compressor assembly
US2461056A (en) * 1943-03-29 1949-02-08 American Steel Foundries Connecting rod and plunger connection
US2956302A (en) * 1958-05-28 1960-10-18 Yale & Towne Mfg Co Door closer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR388025A (fr) * 1908-03-10 1908-07-31 Auguste Maurice Eudelin Pompe à air
US957920A (en) * 1910-01-19 1910-05-17 William J Wassmann Cross-head.
US1362422A (en) * 1919-09-29 1920-12-14 Miles D Joyner Crosshead
US1371745A (en) * 1920-07-20 1921-03-15 Joseph F Eischeid Adjustable crosshead
US2002200A (en) * 1931-10-03 1935-05-21 Cooper Bessemer Corp Engine compressor assembly
US2461056A (en) * 1943-03-29 1949-02-08 American Steel Foundries Connecting rod and plunger connection
US2956302A (en) * 1958-05-28 1960-10-18 Yale & Towne Mfg Co Door closer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230026A (en) * 1978-10-25 1980-10-28 Hartley E Dale Reciprocating piston device
US5228291A (en) * 1990-04-05 1993-07-20 Meyering Ralph A Motor with rotating mass induced vibration driving means
US5638738A (en) * 1996-01-24 1997-06-17 Ingersoll-Rand Company Air motor piston to crank linkage
US20040057842A1 (en) * 2002-09-25 2004-03-25 Hitachi Industries Co., Ltd. Reciprocating compressor
US7052250B2 (en) * 2002-09-25 2006-05-30 Hitachi Industries Co., Ltd. Reciprocating compressor
US9163617B2 (en) 2010-09-10 2015-10-20 Kmt Waterjet Systems Inc. High pressure pump including hollow stud

Also Published As

Publication number Publication date
DE2032605A1 (de) 1971-01-14
JPS4818162B1 (de) 1973-06-04
NL142225B (nl) 1974-05-15
CH512017A (de) 1971-08-31
FR2050506B1 (de) 1973-02-02
DE2032605B2 (de) 1977-09-08
DE2032605C3 (de) 1978-05-11
FR2050506A1 (de) 1971-04-02
GB1312843A (en) 1973-04-11
NL6911913A (de) 1970-11-09
BE753004A (fr) 1970-12-16

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