摘要:
A swash plate type piston pump includes a plurality of pistons, a cylinder block including a plurality of cylinders for housing the pistons, a swash plate for reciprocating the pistons to expand and contract volume chambers of the cylinders with the rotation of the cylinder block, a biasing mechanism for biasing the swash plate in a direction to increase a tilting angle, a first control pin for driving the swash plate in a direction to reduce the tilting angle according to a first load pressure, and a second control pin for driving the swash plate in a direction to reduce the tilting angle according to a second load pressure. The first and second control pins are connected in series.
摘要:
[Task] A resin-based coating layer on a swash plate of a swash-plate type compressor, particularly, a variable-displacement swash-plate type compressor should have wear resistance and low-friction property altogether. [Means for Solution] A swash plate (60) of a swash plate-type compressor is covered with a resin-based coating layer (112). The coating layer contains 5 to 60 mass% of spherical graphite particles (115b) having an average particle diameter of 5 to 50 µm, the balance being one or more species selected from polyimide resin and polyamide-imide resin. The spherical graphite particles (115b), excepting minute particles having a particle diameter 0.5 times or smaller the average particle diameter, have an average shape coefficient (Y AVE ), as defined below, falling within a range of 1 to 4, and further 70% or more in number of the spherical graphite particles have a shape coefficient (Y), as defined below, within a range of 1 to 1.5, wherein, "total" indicates that a value in [ ] is totalized for number "i", "PM" indicates the circumferential length of one particle, "A" indicates a cross sectional area of one particle, and "i" indicates the measurement number.
摘要:
Die Erfindung betrifft hydrostatische Axialkolbenmaschine (1) in Schrägachsenbauweise mit einer um eine Rotationsachse (R t ) drehbar angeordneten Triebwelle (4), die mit einem Triebflansch (3) versehen ist, und einer um eine Rotationsachse (R z ) drehbar angeordneten Zylindertrommel (7), wobei die Zylindertrommel (7) mit mehreren konzentrisch zur Rotationsachse (R z ) der Zylindertrommel (7) angeordneten Kolbenausnehmungen (8) versehen ist, in denen jeweils ein Kolben (10) längsverschiebbar angeordnet ist, wobei die Kolben (10) an dem Triebflansch (3) gelenkig befestigt sind, und wobei zwischen der Triebwelle (4) und der Zylindertrommel (7) ein Mitnahmegelenk (30) zur drehsynchronen Drehung der Zylindertrommel (7) und der Triebwelle (4) angeordnet ist. Das Mitnahmegelenk (30) ist als Kegelstrahl-Halbwalzengelenk (31) ausgebildet.
摘要:
A swash plate type compressor is arranged with a plurality of semispherical shoes 4 and a disc shaped swash plate 2. A resin coating 12 is formed on a surface 2A and a rear surface 2B (sliding surface) of the swash plate 2 which slides with the shoe 4. The resin coating 12 includes a structure whereby multiple hexagonal cylinder bodies 12B are fabricated on a surface of a substrate 11 and an end surface 12C of each cylinder body 12B forms a sliding surface which slides with the shoe 4. In addition, a honeycomb shaped groove 12A is formed at an adjacent position of each cylinder body 12B forming a storage part of a lubricant O and a container part for foreign objects 15. The swash plate 2 can be provided with excellent wear resistance, seizure resistance and lubrication retention.
摘要:
A variable displacement swash plate compressor includes a housing (1), a drive shaft (3), first (22a) and second (22b) radial bearings, a swash plate (5), and an actuator (13) capable of changing the inclination angle. The actuator includes a movable body (13a) and fixed body (13b). The movable body includes a main portion (130) and circumferential wall (131). The main portion includes an insertion hole (132). The housing includes an accommodation wall (210). A first clearance (X1) exists between the circumferential wall and fixed body. A second clearance (X2) exists between the drive shaft and wall of the insertion hole. A third clearance (X3) exists between the circumferential wall and accommodation wall. A fourth clearance (X4) exists between the drive shaft and first radial bearing. A fifth clearance (X5) exists between the drive shaft and second radial bearing. The first and second clearances differ in size. The sum of the third clearance (X3) and the smaller one of the first and second clearances is larger than the fourth and fifth clearances.
摘要:
A swash plate type piston pump includes a plurality of pistons, a cylinder block including a plurality of cylinders for housing the pistons, a swash plate for reciprocating the pistons to expand and contract volume chambers of the cylinders with the rotation of the cylinder block, a biasing mechanism for biasing the swash plate in a direction to increase a tilting angle, a first control pin for driving the swash plate in a direction to reduce the tilting angle according to a first load pressure, and a second control pin for driving the swash plate in a direction to reduce the tilting angle according to a second load pressure. The first and second control pins are connected in series.
摘要:
In order to increase the anti-seizing properties of a swash plate which is a sliding component of a swash plate type compressor, a copper alloy is sprayed onto the swash plate and the following texture/composition controls are performed as required: (a) to produce a mixed texture of a dissolved texture into which atomized bronze powder is dissolved during spraying and an atomized texture into which the same bronze powder is not dissolved, (b) to add no or a small amount of Pb to the dissolved texture, (c) to add Sn, P, Al, Ag, Si, Mn, Cr, Ni, Zn, Pb and/or Bi to copper, (d) to add a hard material to a copper alloy, and (e) to form an intermediate layer comprising an Ni alloy or the like between the sprayed layer and a substrate.
摘要:
A swash plate type compressor including: a plurality of pistons (14) each including a head portion (70) and an engaging portion (72) engaging a radially outer portion of opposite surfaces of the swash plate, each piston being reciprocated by the swash plate, and a plurality of shoes (76,78) each of which is disposed between one of the opposite surfaces of the swash plate and the engaging portion of each piston for sliding on both of the swash plate and each piston; and wherein the swash plate is formed of a ferrous material and has lubricating films (166) formed on sliding surfaces (140,142) thereof which slide on the shoes; and wherein each of at least one of the plurality of shoes is a nitrided shoe which is formed of a ferrous material and which has been subjected to a soft nitriding treatment on at least a sliding surface (138) thereof which slides on the swash plate.
摘要:
A swash plate type compressor is arranged with a plurality of semispherical shoes 4 and a disc shaped swash plate 2. A resin coating 12 is formed on a surface 2A and a rear surface 2B (sliding surface) of the swash plate 2 which slides with the shoe 4. The resin coating 12 includes a structure whereby multiple hexagonal cylinder bodies 12B are fabricated on a surface of a substrate 11 and an end surface 12C of each cylinder body 12B forms a sliding surface which slides with the shoe 4. In addition, a honeycomb shaped groove 12A is formed at an adjacent position of each cylinder body 12B forming a storage part of a lubricant O and a container part for foreign objects 15. The swash plate 2 can be provided with excellent wear resistance, seizure resistance and lubrication retention.