JPS58200086A - Fluidic rotary apparatus - Google Patents

Abstract

PURPOSE:To enable to prevent the rotation of an oscillating valve plate around its own axis that is used in a swash plate type piston pump or the like and driven eccentrically, by attaching a rotation preventing pin to the oscillating valve plate for preventing the rotation of the valve plate around its own axis, and moving and guiding the rotation preventing pin in a cylindrical hole formed in the fixed side of a valve chamber. CONSTITUTION:At least two or more rotation preventing pins 80 are fixed to an oscillating valve plate 62 or to a valve chamber having therein the oscillating valve plate 62, and a cylindrical hole 82 is formed in the fixed side facing the pin 80 or in the oscillating valve plate 62. By moving and guiding the rotation preventing pin 80 in the cylindrical hole 82, the oscillating valve plate 62 is revolved without causing rotation around its own axis.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to fluid rotation devices known as gerotor type hydraulic pumps or gerotor type hydraulic motors or swash plate type piston pumps or swash plate type piston motors, and in particular to fluid rotation devices for supplying fluid pressure converters. The present invention also relates to a distribution valve mechanism for a fluid rotation device that switches the flow path of fluid to be discharged.

Conventionally, in this type of fluid rotation device, for example, a gerotor type hydraulic pump or hydraulic motor, the stator member has internal teeth as a fluid pressure converting section, and the number of external teeth is one less than that of the stator internal teeth. The rotor members are engaged eccentrically,
A distribution system in which a group of small operating chambers that repeatedly expand and contract in sequence with the stator member is formed by the revolution of the rotor member due to the rotation of the rotary drive shaft, and fluid is sequentially supplied and discharged between the group of small operating chambers. The valve mechanism is provided with a valve plate that is eccentrically driven by a rotary drive shaft and swings, and the flow path for the operating chamber group of the output converter is opened and closed by the revolution and swing of the driven valve plate. A distribution valve mechanism using such a swinging valve plate is, for example,
In the gerotor-type fluid rotation device of No. 1325, an annular valve [J1 is provided on the end face of the valve plate. In this way, the reason why the valve is provided with an annular valve port is that when the valve plate is driven eccentrically by the rotational drive shaft, the valve plate causes rotational movement in the direction opposite to the revolution direction due to the sliding friction of the valve plate. In addition, independent valve ports are provided corresponding to the operating chamber groups of the fluid pressure converter (in order to prevent the position of the valve ports from changing due to the rotation of the valve plate, making it difficult to switch the flow path properly). It is.

However, by providing an annular valve port on the valve plate, it can rotate.

However, compared to the case where the valve port is provided independently, the annular valve port has a larger area relative to the sliding shell of the valve chamber, so the nB U between the valve body and the valve chamber is larger. ) When used in a hurry, there was a problem that the movement of the valve plate became difficult due to the fluid pressure applied to the valve plate side.

Therefore, the inventors of the present application proposed a gerotor-type fluid rotation device in which an independent valve port is provided in the swinging valve body by preventing the swinging valve body from rotating. However, it reduces liquid leakage in the distributing valve mechanism and prevents the valve plate from becoming loose even when used in a castle.

However, in the rotation prevention structure Fi of the swinging valve plate in the above device, a plurality of external teeth are formed on the outer periphery of the valve plate, and an inner rit consisting of the damage IEI of the valve plate + the envelope group of the external teeth due to the rotation.
The structure is formed on the inner periphery of the tm chamber stator, and the outer 11 is formed on the outer periphery of the valve plate. Because the shape of the internal teeth of the valve chamber stator, which are formed opposite to the external teeth and l'Jd, is complex, the machining at the manufacturing stage is complicated and it is difficult to obtain sufficient meshing accuracy, resulting in high costs. There was a problem that the KA value was high.

The present invention has been made with attention to such problems, and has a plurality of fluid flow paths for supplying and discharging fluid to a group of operating chambers that expand and contract and are formed around a rotational drive shaft. , in a fluid rotating device in which the fluid flow path is sequentially opened and closed by a valve port of a swinging valve plate that is eccentrically driven by the rotational drive shaft and revolves and swings in a state where rotation is locked, the swinging valve plate or The oscillating valve plate is housed, and at least two anti-rotation pins are installed on the side of the valve chamber, and a cylindrical hole is provided on the fixed side or the oscillating valve plate opposite to the anti-rotation pin, and inside this cylindrical hole By rotating the oscillating valve plate, which prevents rotation by guiding the rotation prevention bottle t, by making the rotation prevention structure simple, machining is easy, and the valve opening accuracy without play is achieved. It is an object of the present invention to provide a fluid rotating device with less leakage in the valve plate portion, which is equipped with a distribution valve mechanism having an anti-rotation pin that is easily obtained and is inexpensive in terms of cost. The explanation will be based on.

FIG. 1 is an axial cross-sectional view showing one embodiment of the present invention, taking a gerotor type fluid rotation device as an example.

First, to explain the configuration, the fluid rotation device has a rotation angle of 10° and 12°.
It is divided into five casing sections consisting of 14, 1, and 1g, and each casing section 10 to 18 is tightened in the axial direction by a through hole 20, and the casing section 12 has a built-in gerotor type fluid pressure converter. Built-in casing section 16KFi distribution valve mechanism.

The fluid pressure transducer built into the casing section 18 has 1
-As shown in Figure 2 with the Gourd II FI11i taken out,
In the stator member 24 having seven internal teeth 22, an internal f.
A rotor member 28 having one fewer external teeth 26 than the number of Ii22 is rotatably arranged on an eccentric axis 32t4 with respect to the axis 30 of the stator S member 24. A spline bearing 34 is cut into the shaft hole of the rotor member 28.
A spline 38 formed at one end of an intermediate drive shaft 36 meshes with the spline bearing 34, and the intermediate drive shaft 36 is housed with the spline 38 at an angle offset toward the plane of the drawing with respect to the axis 30. spline 4 orj casing section 10 formed at the other end of the intermediate drive shaft 36
The drive shaft 42 is engaged with a spline bearing in the shaft mounting portion 46 of the drive shaft 42 built into the drive shaft 42.

When the drive shaft 42 is used as a pump, it becomes a human power shaft for transmitting the rotational force of an electric motor, etc. When used as a motor, it becomes an output shaft for extracting the rotation of the rotor S material 28 to the outside.

Incidentally, the casing 48 has a shaft device m46 of the drive shaft 42 mounted in the casing 44 by bolts 50.
□.

(1) The action of the fluid pressure converter built in the casing section 12 is such that when the rotor member 28tM# shown in the second factor is rotated around the rotor member 28tM# shown in the second factor by the drive shaft 42 and the intermediate tIjAIIlil shaft 36, the rotor The member 28 engages with the internal teeth 22 of the stator member 24 and revolves around the axis 30 while drawing an eccentric orbit to the left. When the rotor member 28 revolves in this way, its eccentric axis 3
2, the number of internal teeth 22 of the stator member is 7, and the number of external teeth 26 of the rotor member 28 is 1.
In the illustrated embodiment, which includes six or fewer rotor members, when the rotor member 28 revolves clockwise six times, the rotor member 28 rotates once in the left direction.

When the rotor member 28 revolves in this way, the inner teeth 22 are located above the eccentric line 52 passing through the axis 30 and the eccentric axis 32.
The operating chamber # formed between the external teeth 26 contracts as the rotor member 28 rotates clockwise, while the
The operating chamber group formed between the inner tooth 22 and the outer tooth 26 shown on the lower side of z expands as the mouth member 28 rotates clockwise.

Therefore, when used as a pump, fluid is sucked in from the outside by the operating chambers that expand, and -h.

High-pressure fluid 111 is discharged from the contracting working chamber group to the outside, and when used as a motor, the rotor member 28 is rotationally driven by introducing high-pressure fluid into the expanding working chamber group.

Referring again to FIG. 1, the members comprising casing section 14 include stator member 24 and rotor member 28 of FIG.
Seven fluid flow passages 58' are arranged in an annular manner and open to the actuation channel group formed between the two.

Furthermore, a distribution valve mechanism with an anti-rotation function is incorporated in the casing section 16, and as is clear from FIG. 62° is arranged eccentrically with respect to the axis 30 of the key/nog 60 with the eccentric axis 66 as the rotation center,
The axis 68Fi of the swinging valve plate 62 passing through the axis 30 and the eccentric axis 66 is at a position shifted by 90 degrees with respect to the eccentric line 52 of the rotor member 28 shown in FIG.

The injury prevention valve plate 62 is independently provided with seven valve holes 70 corresponding to the fluid flow paths 58 of the casing section shown by broken lines, and the opening O portion of the valve holes 70 on the casing section 14 side is shown by broken lines. It is spread out in steps like this. Therefore, even if the swinging valve plate 62 rotates eccentrically, the opening sFi of the valve hole 70 which opens into the fluid flow path 58 is always in a state where it is closed to the body flow path 58.

On the other hand, rotation prevention bins 8 are provided at four locations on the outer periphery of the rocking valve plate 62.
0 is mounted in the axial direction, and the end 1iK on the side of the casing section 14 facing the anti-rotation pin 80 is fitted with a cylindrical hole 82.
is formed, and the swing valve plate 62 is deflected around the axis 3o.
, the anti-rotation bottle 80 is driven by the center of the cylindrical hole 82.
t(ll) begins to move tangentially.

Here, the diameter of the cylindrical hole 82 in which the anti-rotation via 8G is installed is the eccentricity of the swinging valve plate 62 with respect to the axis 30'.
02 times 2! plus the diameter R'fr of the anti-rotation bottle 80
It has a pore diameter of =2J+R. That is, the diameter of the cylindrical hole 82 is determined based on the orbit of the swinging valve plate 62 that revolves around the shaft center 30 with the fine shaft center 66.

By sliding the anti-rotation pin 80 attached to the swinging valve plate 62 in sliding contact with the inside of the cylindrical hole 82 formed on the fixed side and guiding it, it can be synchronized with the rotor member 28 of the fluid pressure converter. When the swinging valve plate 62 revolves with a predetermined phase difference, the rotation of the swinging valve plate 62 itself is prevented by the guided movement in the cylindrical hole 82 of the anti-rotation pin 800, and the swinging valve plate 62 is prevented from rotating. 62 performs only a relative eccentric movement while maintaining the valve plate posture shown in the figure. - As a result, the swinging valve plate 62d does not make any rotational movement, so it is , each of the independently provided valve holes 70 can maintain a one-to-one correspondence with the fluid flow path &8.

The machining of the swinging valve plate 62, which consists of the anti-rotation pin 80 attached to the swinging valve plate 62 and the cylindrical hole 82 formed in the fixing member 11, can be accomplished by simple cutting and drilling. This makes it easy to increase the machining accuracy so that there is no play in the anti-rotation pin 80 that slides in the cylindrical hole 8z, and because the structure is simple, the cost can be reduced.

Referring again to Fig. 1', the casing section 18 includes a lid member 84, which has two fluid connection ports 86.8.
8, the fluid connection port 86 communicates with an inner annular groove 90 provided in the sliding surface with the swinging valve plate 62, and the fluid connection port 88
communicates with an annular groove 92 formed on the outside of the annular groove 90. With respect to the annular shape m9 G, 92 of the lid member 84, among the valve holes 70 of the rocking valve plate 62 that performs a heart motion, the valve hole 70 located on the lower side shown in FIG. The upper valve hole 70 communicates with the inner annular groove 90 .

Father, in FIG. 1, the valve drive shaft 94 that eccentrically drives the swinging valve plate 62 is connected to the spline 3891 of the intermediate moving shaft 36 inside the casing 44! A pin 96vC is connected to the end of the rotor member 28, and transmits movement with a predetermined phase difference in synchronization with the revolution of the rotor member 28 to the swing valve plate 62.

That is, the valve drive shaft 94 returns the eccentric rotation of the bottle 96 to the rotation of the valve drive shaft 94 about the axis line 30, and the eccentric shaft portion 94m rotates the rotor member 28 of the fluid pressure converting portion of the swinging valve plate 62i. It is synchronized with the revolution of the earth and is transmitted by converting it into eccentric motion with a phase difference of % degrees.

Figure 4 is a sectional view showing another embodiment of the distribution valve mechanism of the fluid rotation device shown in Figure 1. In this embodiment, an anti-rotation bottle is attached to the fixed side of the valve mechanism, and a slider is attached to the anti-rotation bottle. It is characterized in that the adjacent cylindrical hole tm is provided on the valve recommendation plate side.

That is, the anti-rotation pin 80 is attached to the casing member forming the casing section 14, and the 1! @A cylindrical hole 82 is formed in the end of the valve plate 62, and the swinging valve plate 62 is eccentrically driven by the valve drive shaft 94 by the guided movement of the cylindrical hole 82 that is in sliding contact with the rotation prevention pin 80 on the fixed side. K is applied to prevent rotation. The hole diameter of the cylindrical hole 82 provided in the rocking valve plate 62 in this embodiment is also the diameter of the cylindrical hole 82 which is the sum of the eccentricity of the rocking valve plate 62 times 402 and the ti diameter of the rotation prevention bin 80, 80 can be accommodated and the cylindrical hole 82 can be formed by simple hole machining, so machining is easy and processing that does not cause play between the anti-rotation bottle 80 and the threshold of the cylindrical hole 82. Accuracy can be easily obtained.

In the above embodiment, four anti-rotation bins are installed on the fixed side of the welfare valve plate or distribution valve mechanism, but if the swinging valve plate 62 is positioned at at least 211 positions, Since rotation can be prevented, any number of anti-rotation bins and cylindrical holes can be used as long as they are at least two.

FIG. 5 is a sectional view showing another embodiment of the present invention in a piston-type fluid rotation device.

First, to explain the configuration, the piston-type fluid rotating device includes a plurality of pistons 104 in a cylinder 102a of a cylinder block disposed around an output shaft 100, and a swing valve plate 106 to supply and discharge fluid to and from the cylinder 102m. The reciprocating movement of the piston 104 (screw) 7104 is sequentially switched to restore the piston 104 to VE (screw).

In this piston tJ1tiL body rotation device, as well as the gerotor mm body rotation device, the sliding valve plate 1t) @#i
Mk constitutes a distribution valve mechanism that is rotated under control in synchronization with the output shaft 100 by an eccentric drive shaft 112,
The flow paths are sequentially switched so that the fluid is supplied and discharged at the threshold between the cylinder 102a and the cylinder 102a that contracts. Number of fluid channels 114t! Furthermore, the KI11 member 116 has the same structure as in the embodiment shown in FIG.
A fluid connection port 86,88 and an annular groove 90,92 are formed.

In such a piston-type fluid rotating device, at least two anti-rotation bins 80 are attached to one swinging valve plate 106, and a cylindrical hole 82 is formed in the cylinder block 102 facing the anti-rotation bins 80. Then, by eccentric driving of the swinging valve plate lθ6 by the central assembly shaft 112, the anti-rotation valve 80 is guided and moved into sliding contact with the inside of the cylindrical hole 82,
This prevents the swinging valve plate 106 from rotating, and allows the valve holes formed in the swinging valve plate 106 to correspond to the fluid passages 114 and 1fil of the cylinder block 102.

Father, the rotation prevention mechanism of the swinging valve plate ios is the rotation prevention bin 80
The machining is simple as it only requires installation of the cylindrical hole 82 and the formation of the cylindrical hole 82, and the highly precise machining that eliminates the play between the anti-rotation pin 8o and the cylindrical hole 82 can be done easily, and the cost is also low. Can be done.

Incidentally, the rotation of the piston type storage body ii in Fig. 5! Even in terms of value, J
II41p! Similarly to the embodiment J, the anti-rotation bottle 8o is fixed to the turtle member lid side, and a cylindrical hole 8 is formed on the swinging valve plate 106 side.
2 is formed and 4 is good.

As explained above, according to the present invention, the cocoon weight In a fluid rotating device in which the fluid flow path is opened and closed by a valve hole of a swinging valve plate that revolves with its rotation corrected by an eccentric drive field caused by a rotational drive shaft, the swinging valve plate or the valve housing is stored on the valve plate. At least two or more anti-rotation bins are installed on the fixed side of the valve chamber, and a tomoe restraint hole is installed on the fixed side of the valve chamber or the field plow valve side that corresponds to the anti-rotation bins.

By guiding and moving the anti-rotation bottle within this cylindrical hole, the rotation of the eccentrically driven swinging valve plate is prevented, which simplifies the anti-rotation structure of the valve plate in the distribution valve mechanism. It is easy to process, it is easy to obtain a highly accurate valve opening, and it is possible to significantly reduce costs by simplifying machining.
The effect is that it is possible to mass-produce a fluid rotation device equipped with a distribution valve mechanism having an anti-rotation function.

[Brief explanation of drawings]

111!1 is an axial cross-sectional view of a gerotor-type fluid rotating device showing an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line 1-1 in FIG. Cross-sectional view, Figure 4 is the first
A sectional view showing another embodiment of the distribution valve mechanism used in the embodiment shown in the figure, Figure 5 is an experimental th1 diagram showing another embodiment of the present invention to which a piston-type fluid rotation 1!1allK is applied. IQ, 12.14, 16.18 ... Cane/g division 20 ... Through bolt 22 ... Internal tooth 24 ... Stator member 26 ... Lateral tooth 28 ... Rotor member
30. Axis center line 32...Eccentric shaft center 34..Spline bearing 36..Intermediate drive shaft 38.40.Subfi.

Claims (1)

[Claims] It has a plurality of fluid channels for supplying and discharging fluid to a group of operating chambers that expand and contract formed around a rotation drive shaft, and has a rotational speed of 1ε%mrjIJ by an riI rotation axis. In a fluid rotating device that sequentially opens and closes a distributing fluid flow path by means of a valve port of a swinging valve plate that revolves in a rotating state, the swinging valve plate or the swinging valve plate is At least two or more anti-rotation bins are attached to either side of the stored valve chamber, and the anti-rotation bins are guided in contact with the end of the valve chamber or the swinging valve plate facing the skeleton anti-rotation bin. A cylindrical hole is provided, and the cylindrical hole has a hole diameter that is twice the eccentricity of the swinging valve plate eccentrically rotated by the rotational drive shaft plus the diameter of the IIQml anti-rotation bottle. Device.