JPH04165150A - Liquid-operated transmission - Google Patents

Abstract

PURPOSE:To enlarge application by providing two connecting ports communicated with an external liquid pressure passage via a first cylinder barrel provided with two liquid passages communicated with a first and a second common liquid passages and also via a rotary joint. CONSTITUTION:A fluid discharged from a second cylinder 13 in its forward stroke is sucked into a first cylinder in its backward stroke through a second cylinder port 30, the outer chamber of a cavity 61 and a first cylinder port 21. In a case of providing input from a second shaft 2 and fetching output from a first shaft 1, the torque outputted from the first shaft 1 and the rotating speed can be controlled by connecting the output shaft of a hydraulic motor 81 to the first shaft 1 by gears or the like so as to make addition to the capacity of the hydraulic motor 81 formed of a first cylinder barrel and the like or performing cut-off by the operation of a change-over valve 80 connected to outside connecting hydraulic ports 76, 77. This results in enlarging application fit for many uses by changing these external apparatus.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is a hydraulic transmission device, especially for changing the speed and transmitting the rolling force of one human-powered shaft to one -ζ output through hydraulic pressure. t
This invention relates to a suitable hydraulic transmission.

(Prior art and its problems) Power transmission efficiency is improved by dividing power into two parts: power transmitted mechanically and power transmitted via liquid, and greatly shifting the power transmitted mechanically during high loads. A hydraulic transmission device was proposed that would allow
-135651-).

The gist of this is the first rotating shaft.

- a second 101 rotation axis arranged concentrically with the first rotation axis; a first cylinder barrel connected to the first rotation axis; - the second l'i11 rotation axis; a second cylinder barrel arranged coaxially with the shaft and rotatable relative to the dirt; Disposed between; 6 and an integrated valve flock, and a circle centered on its axis from its outer end surface to
a plurality of first cylinders extending at predetermined intervals along the circumferential direction substantially from the axis 1'lii of ζ;
Around the tilting axis perpendicular to the rotational axis (rolling cylinder 2), the 2nd cylinder (end (1) A plurality of first pistons that reciprocate by sliding in contact with the inclined surface of the first swash plate as the cylinder bar of the translation brush (1) rotates, and (2) the second cylinder bar of the first swash plate. /) + A plurality of second cylinders extending substantially in the direction of the axis from the end surface of the bow at predetermined intervals along the circumference in a circle centered on the axis; a second swash plate integrated with the second co-rotating shaft; and a second swash plate integrated with the second co-rotating shaft; As the shaft rotates, a plurality of second pistons reciprocate as they come into sliding contact with the slope of the second 11 slope, and a plurality of second pistons reciprocate as the shaft rotates. 1 rotation ζ - LU and switched and the 1st Biff in the 7↑ stroke,
The first hole I that communicates with the first cylinder that was inserted
I-interport first! 1. 4. Connect to the liquid flow path.
A first switching valve that connects the first cylinder bow 1, which communicates with the first cylinder into which the first piston is not inserted during step J, to the second common liquid passage.

A second cylinder boat is inserted into the valve block and communicates with a second cylinder into which a second piston is inserted, which is in the backward stroke and is switched according to the relative rotation with the first rotating shaft. A second cylinder port that communicates with the first common liquid passage and a second screw I/N into which the second piston is inserted during the forward stroke is connected to the second common liquid passage. A second switching valve or the like is provided in communication with the first annular cavity and the first cylinder port is defined by the valve block.

The first annular cavity is inserted into the first annular cavity in a liquid-tight manner so as to be freely slidable, and the first annular cavity is partitioned into an outer chamber side and an inner chamber side, and the first annular cavity is eccentrically slid within the first annular cavity. a first switching valve that selectively communicates the first cylinder port with the outer chamber or the inner chamber;

1) a second annular cavity bounded by the valve block and having a second cylinder port open; A second switching device that partitions into an outer chamber and an inner chamber and selectively communicates the cylinder port of 1-translation brush 2 with the outer chamber or 4: the orientation side chamber by eccentrically swinging within this second annular cavity. a valve; a first common liquid flow path communicating between an outer chamber of the first annular cavity and an outer chamber of the second annular cavity; and an inner chamber of the first annular cavity and the second annular cavity; A hydraulic pressure L having a second common liquid passage, etc., which communicates with the inner chamber of the annular cavity of the transmission device, communicates the first common liquid passage and the second common liquid passage with the outside. There is no liquid passage (liquid)] The second communication is the rotating first cylinder barrel.

Since the valve was limited to the inside of the second cylinder barrel and the hydraulic pressure could not be taken out to the outside, it was necessary to construct a nosteno that was linked to external hydraulic equipment.

(Means for Solving the Problem) The present invention was devised to deal with this problem, and its gist is that the rotating balzozo 11
In order to provide a liquid passage connecting boat which can be connected to an external liquid passage which connects with the first and second common liquid passages in the package, the first 7 cylinder barrel described in 1iij and the first rotating The inside of the shaft is connected to an external connection boat via two independent liquid passages passing through 1' and a liquid-tight co-rotating rotary joint having two liquid passages.

(Negative Pressure) Since the first and second common liquid passages can be connected to the external liquid passage, a control valve 1 is connected to the liquid passage.

By connecting a hydraulic pump or a hydraulic motor, functions that can be used in a wide range of applications can be created. For example, each time a hydraulic motor is connected, it is possible to increase the torque generated by the transmission and expand the speed change range.

(Example) An embodiment of the invention is shown in FIGS. 1 and 2.

In FIG. 1, 1 is a first rotating shaft, and 2 is a second rotating shaft, which are arranged concentrically with the first rotating shaft. 3 is the first
The cylinder barrel is connected to the first co-rotating shaft 1. Reference numeral 4 denotes a second cylinder barrel, which is arranged coaxially with the second rotating shaft 2 and capable of rotating 11 J relative thereto. 5 is Barsov +: + 7ri.

It is held by the inner end surface of the first cylinder barrel 3 and the inner end surface of the second cylinder barrel 4 and is integrally fixed thereto via a pin or the like. 1st cylinder barrel; 3
A plurality of cylinders 6 extend from the outer end surface of the first cylinder barrel (3) in the axial direction of the first cylinder barrel (3) at predetermined intervals along the circumference of a circle 1 centered on the axis. A first piston 7 is inserted into each of these cylinders so as to be able to slide in a liquid-tight manner, and the spherical outer end of each of these first pistons 7 is held by a slipper pad 8 so as to be capable of sliding movement. These Surinova blades 1'8 are held by the tenor 9, and their 1g moving surface is in direct contact with the (ψ slope) of the first swash plate 10.The first swash plate 10 is perpendicular to the first axis. It rotates around a tilting shaft 11 and is held in a gauging 12 via this tilting shaft 11 with a rotation μJ function. A plurality of cylinders 13 extend substantially in the axial direction from the outer end surface of the second cylinder barrel 4 at predetermined intervals.In each of these cylinders 13, a second piston 14 is disposed in a fluid-tight manner. The spherical outer ends of the second pistons 14 are movably inserted into the slipper butts 5, respectively, and are held in a sliding movement by a retainer 16. The movement is brought into sliding contact with the inclined surface of the second swash plate 17. This second swash plate 17 is integrated with the second rotating shaft 2. An annular groove centered on the axis of the opposing surface is provided, and an annular cavity 60 is defined in the cylinder block 5) by this groove and one end surface of the first cylinder barrel. In addition, an annular groove centered on the axis is provided on the surface facing the second cylinder barrel 4, and this groove and the inner end surface of the second cylinder barrel 4 form a bulge. An annular cavity 61 is defined within 5.

A first cylinder port 2 is located in the radial center of the cavity 60.
1 and a second cylinder port 300) in the radial center of the cavity 61. The radial force supination end of the cavity 60 is connected to the radial force supination end of the cavity 61 via a plurality of first common liquid passages 27 provided in the valve block 5 at predetermined intervals along the circumferential direction. A second hole is formed in the valve block 5 at a predetermined interval along the circumference, and the radially inner end is in communication with the outer end.
It communicates with the radial direction/A end of the cavity 61 via the common liquid flow path 26 .

Inside the cavity 60, each oval opening Y' is arranged. Annular first switching valve 2
2 is along the tilt axis 11 from the axis of the pulsive t1 screw 5 △
The first switching valve 22 divides the cavity 60 into an outer chamber and an inner chamber.

Similarly, a circle having approximately the same diameter as Pino 1,000 yen, in which circular openings are arranged in the cavity 61, and having approximately the same wall thickness as the radial dimension of these oval openings. An annular second switching valve 23 is mounted in a liquid-tight slidable manner eccentrically by Δ along the direction of the neutral line of the inclined surface of the second swash plate 17 from the axis of the valve block 5. The cavity 61 is controlled by the switching valve 23 of
is divided into an outer chamber and an inner chamber.

On the outer surface of the first switching valve 22, the inner sides of a plurality of drive r1:I throats 24 of equal length abut at predetermined intervals along the circumferential direction, and these drive r1 throats 24 have holes in the valve block 5. Four of them are slidably slidable in a liquid-tight manner through holes that are opened and extend radially, and their outer ends abut against the inner surface of a cam ring consisting of the inner race of the bearing 19.

Further, on the inner surface of the second switching valve 23, a number of drive ports of equal length are provided at predetermined intervals along the circumferential direction.

The outsides of 1 and 25 collide with each other, and these driving rono F25 extend radially through the holes in the valve pro 5 and slide freely in a liquid-tight manner, and the inner ends of these drive rono F25 pass through the outer surface of the cam ring 28. There is a collision.

Then, the valve handle 1 5, the first cylinder barrel 3, and the second cylinder barrel are fastened to each other by a plurality of bolts 62 extending in the axial direction at predetermined intervals in the circumferential direction. ing.

The external liquid connection passage passes through a liquid passage 70.71 through the first cylinder barrel, through a liquid passage 72.73 passing through the first axis of rotation, and through a rotary joint "4-43" inserted and fixed in the gauging 12a. Via the external connection board I/76.77 of the casing 12,1, a switching block l which is an external device
``80'' and an output shaft are connected to a hydraulic motor 8 whose output shaft is connected to a first rotating shaft through a gear or the like.

Thus, when the first rotating shaft 1 is driven to rotate.

First cylinder barrel 3. The valve block 5 and the cylinder barrel 4 rotate, and the first piston 7 rotates accordingly.
It reciprocates in the axial direction within the cylinder 6 of. At the same time, the four ends of the plurality of drive rods 24 roll on the cam surface of the cam ring 19, and the drive port throat 24 reciprocates in the radial direction. An oblong opening 1' in the first cylinder bow I21, which communicates with the first cylinder 6 into which the first piston 7, which is undergoing eccentric rocking movement and is in the backward stroke '+j', is opened into the outer chamber. The first cylinder 6 into which the first piston 7 was inserted during the ζ movement 4j.
An oblong opening of the first cylinder port 21 that communicates with the other []
opens into the inner chamber. In addition, multiple drive ports 2 and 25
The inner end of the drive rod 25 rolls on the circular cam surface 28 of the cam ring 28, causing the drive rod 25 to reciprocate radially, and the second switching valve 23 eccentrically swings within the cavity 61. The second cylinder 1 into which the second piston 14 is inserted is in the forward stroke.
3, the oval opening of the second cylinder port 30 that communicates with the second cylinder 13 is opened to the outer chamber, and the second cylinder port 30 that communicates with the second cylinder 13 into which the second piston 14 is inserted is inserted. An oblong opening opens into the inner chamber.

Thus, the liquid Ij that was not discharged from the first cylinder 6 during the forward stroke is transferred to the first cylinder port 21, the inner chamber of the cavity 60, and the second common liquid passage 26. It passes through the inner chamber of the cavity 61, the second cylinder bow I.30, and is completely inhaled into the second cylinder 13 during the backward stroke.

The fluid discharged from the second cylinder 13 during the forward stroke is transferred to the second cylinder port 30. outer chamber of cavity 61;
It is sucked into the first cylinder 6 during the backward stroke through the first cylinder port 21. When the input is taken from the second rotary shaft 2 and the output is taken from the first rotary shaft 1, the switching valve 80 connected to the external hydraulic pressure bow 1-76.77 is used. The output shaft of the hydraulic motor 81 is connected to the first
The first cylinder barrel 3 is connected to the rotating shaft of the cylinder by a gear or the like.
It becomes possible to control the torque and rotational speed output from the first rotating shaft 1 by adding to the capacity of the hydraulic motor, etc., or by switching off by operating the switching valve 80. As a result, modification of these external devices expands its applicability to suit many applications.

(Effect of the invention) By connecting the first and second common liquid passages to the /AB connection port in a hydraulic transmission consisting of two cylinder barrels joined together, external equipment with fewer restrictions can be connected to this hydraulic transmission. Since it can be connected to a transmission system, it is possible to expand the transmission speed range and output torque range of the transmission, increasing its applicability.

[Brief explanation of drawings]

1 to 5 show examples, and FIG. 1 is a longitudinal sectional view;
Fig. 2 shows a cross section taken along the line X-X. First rotation axis・1. Second rotating shaft/2° first cylinder barrel/3. Second cylinder barrel 4. Valve funoroku 5, 'A 1 cylinder 6.
First screw 1-7. First swash plate・10. m2
Cylinder 13. Second piston・14. Second
Swash plate・17. First switching valve・22. Second switching valve・23. First drive I'1 throat 24. Second driving rondo・25. First common liquid passage・27. Second common liquid passage・26. First cam bearing 19.
2nd cup, 28, 1st annular cavity, 60.
Second annular cavity・61. Liquid passage connected to the first common liquid passage 70.73.75.43.77° Liquid passage connected to the second common liquid passage 71° 72.7, 1. ．．
43.76, Rotary joint ll 3, Cylinder barrel fastening bolt 62. Casing 12, 12a
, 33. Liller
9.16゜Slipper Pad・8,15 1. Thing A (Display of 1 1990 Patent Application No. 250
No. 480 No. 21 Title of invention Hydraulic transmission 3.9
What relationship does the old incident have with Yama + [i? Patent applicant address (residence) Nagato, 603 Oaza Harizuri, Chikushino City, Fukuoka Prefecture.
None 5, Roy of Amendment Order” 1991], J]22
Day 6, Subject of amendment: Description and drawings, Figure 5.”
The part written as "Figure 1 and Figure 2" has been corrected.

Claims (1)

[Claims] (1) a first rotating shaft; a second rotating shaft arranged concentrically with the first rotating shaft; a first cylinder barrel connected to the first rotating shaft; a second cylinder barrel disposed concentrically with the rotational axis of the cylinder so as to be relatively rotatable therewith; an inner end surface of the first cylinder barrel and the second cylinder barrel;
a valve block disposed between and integrated with the inner end surface of the first cylinder barrel; and a valve block disposed between and integrated with the inner end surface of the first cylinder barrel; a plurality of first cylinders extending substantially in the axial direction of the first cylinders at intervals of A first swash plate is slidably inserted into the first cylinder in a fluid-tight manner, and the outer end thereof slides against the inclined surface of the first swash plate as the first cylinder barrel rotates. a plurality of first
a plurality of second pistons extending from the outer end surface of the second cylinder barrel substantially in the axial direction of the second cylinder barrel at predetermined intervals along the circumferential direction on a circle centered on the axial center of the second cylinder barrel. and a second cylinder integrated with the second rotating shaft.
a swash plate, and the second cylinder is slidably inserted in a liquid-tight manner so that the outer end of the swash plate slides into contact with the inclined surface of the second swash plate as the second rotation shaft rotates. a plurality of second pistons that reciprocate; and a first cylinder that is built in the valve block and communicates with a first cylinder that is switched in response to the first rotation and into which the first pistons that are in the forward stroke are inserted. A first cylinder port that communicates with the first common liquid flow path and communicates with the first cylinder into which the first piston in the backward stroke is inserted.A first cylinder port that communicates with the second common liquid flow path. a switching valve, and a second cylinder that is built in the valve block and communicates with a second cylinder into which a second piston is inserted, which is in a backward stroke and is switched according to the relative rotation with the first rotating shaft. A second cylinder port that communicates with the first common liquid passageway and a second cylinder port that communicates with the second piston into which the second piston is inserted during the forward stroke, and a second cylinder port that communicates with the second common liquid passageway. a first annular cavity that is defined by the valve block and has a first cylinder port open therein; A first cylinder that partitions the cavity into an outer chamber side and an inner chamber side and selectively communicates the first cylinder port with the outer chamber or the inner chamber by eccentrically sliding within the first annular cavity. a switching valve; a second annular cavity bounded by the valve block and having a second cylinder port open; a second switching valve that partitions the space into an outer chamber and an inner chamber and selectively communicates the second cylinder port with the outer chamber or the inner chamber by swinging eccentrically within the second annular cavity; a first common liquid flow path communicating between the outer chamber of the first annular cavity and the outer chamber of the second annular cavity; and the inner chamber of the first annular cavity and the second annular cavity. A second chamber communicating with the inner chamber of the annular cavity.
a first cylinder barrel having a common liquid passage, etc., and having two independent liquid passages communicating with the first common liquid passage and the second common liquid passage; a first rotating shaft; 2 which communicates with an external hydraulic pressure passage provided in a fixed casing via a liquid-tight rotatable rotary joint having a connection passage;
A hydraulic transmission device characterized in that it has a number of connection ports.