JP2857039B2 - Automatic operating device for hydraulic shaft coupling - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic oil supply / discharge device for a hydraulic shaft coupling which is brought into a connected state by receiving and enclosing a pressurized oil and opened when the enclosed pressurized oil is discharged. The present invention relates to an automatic operating device in which a positioning pin is projected from a shaft around a pressure oil supply / discharge device, and a pressure oil supply device is provided so as to be able to advance and retreat according to the pin.

For example, in a rolling mill for continuously rolling iron or aluminum plates, it is often necessary to change rolling rolls depending on the type of the plate. Therefore, the drive shaft of the rolling roll and the spindle shaft connected to the driving device are connected via the shaft coupling, thereby facilitating replacement of only the rolling roll.

Various types of such shaft couplings are known, but attention has been paid to using a hydraulic shaft coupling which can be easily connected or disconnected and has a large capacity transmission torque. The hydraulic coupling is connected by receiving and sealing the supply of pressure oil, and is opened when the sealed pressure oil is discharged.

To supply and discharge the pressurized oil, a hydraulic shaft coupling is
For example, it is conceivable to connect a pressure oil supply / discharge device such as a pilot operated check valve. It is preferable that the supply of the pressure oil to the pressure oil supply / discharge device be performed not automatically but manually. For this purpose, it is conceivable to use an automatic operating device provided with a pressurized oil supply device which is provided to be able to move forward and backward with respect to the port of the pressure oil supply / discharge device.

[0005]

SUMMARY OF THE INVENTION
It must be at a predetermined position with respect to the shaft on which the pressure oil supply / discharge device is provided. However, although the stop position of the axis is controlled to stop at a predetermined position, the stop position is ±
There is an error of about 3 °. Then, when the automatic operation device is at the fixed position, there arises a problem that the port of the pressure oil supply / discharge device does not match the sheet of the pressure oil supply device, and high pressure oil cannot be sent.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a hydraulic oil supply / discharge device which is capable of controlling the pressure oil supply / discharge device even if there is an error in the stop position. It is an object of the present invention to provide an automatic operation device for a hydraulic shaft coupling, in which an automatic operation device provided with a pressure oil supply device for the supply / discharge device can follow a stop position of the pressure oil supply / discharge device.

[0007]

The automatic operating device for a hydraulic shaft coupling according to the present invention, which achieves the above-mentioned object, is connected by receiving and sealing the pressurized oil, and the sealed pressure oil is discharged. Then, a pressure oil supply / discharge device for the hydraulic shaft coupling that is opened is provided on the shaft side, a positioning pin is projected from a shaft around the pressure oil supply / discharge device, and the pressure oil supply device follows the pin. An automatic operation device provided to be able to advance and retreat, wherein a copying section for the pin and a pressure oil supply device are provided;
A second case that supports a substantially central portion of the case via a spherical bearing, a base having a slide member that supports the second case so as to be able to move forward and backward, and is provided between the base and the second case. The apparatus includes a cylinder device and biasing means provided on the second case and pressing the first case from all directions.

[0008]

A positioning pin protrudes around the pressure oil supply / discharge device on the shaft side, and a first case having a copying portion for this pin is pushed in by a cylinder device, and the posture of the first case is set to the pin. The pressure oil supply device provided in the first case and the pressure oil supply / discharge device on the shaft face each other at a predetermined position, and the seat of the pressure oil supply device and the port of the pressure oil supply / discharge device coincide with each other. I do. The first case is supported via a spherical bearing and a biasing means with respect to the second case so that the posture can be changed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a half sectional view from the side of the automatic operating device for a hydraulic shaft coupling of the present invention, and FIG. 2 is a sectional view taken along the line ZZ of FIG.
FIG. 3 is an overall front view of a hydraulic coupling apparatus to which the automatic operating device for hydraulic coupling of the present invention is applied, and FIG. 4 is an overall side view thereof.

First, referring to FIGS. 3 and 4, an entire hydraulic shaft coupling device to which the automatic operation device for a hydraulic shaft coupling of the present invention is applied will be described. In the drawing, reference numerals 1 and 2 denote upper and lower spindle shafts, which protrude from a speed reducer (not shown). 3,
Reference numeral 4 denotes a vertical drive shaft, which indicates the shaft end of a rolling roll (not shown). Reference numerals 5 and 6 denote hydraulic shaft joints 5 and 6, which are attached to ends of the upper and lower spindle shafts 1 and 2 via universal joints 7 and 8, respectively. Reference numerals 9 and 10 denote wheel portions fitted in the middle of the upper and lower spindle shafts 1 and 2, in which pressurized oil supply / discharge devices 11 and 12 are embedded. Reference numerals 13 and 14 denote automatic operation devices provided at positions facing the wheel portions 9 and 10, respectively. As shown in FIG. 4, the automatic operation device 13 is mounted on a gantry 15 and the automatic operation device 14 is installed on a pit 16 dug on the floor FL.

The hydraulic shaft couplings 5 and 6 shown in FIG. 3 have hollow cylindrical portions 17 and 18 into which vertical drive shafts 3 and 4 are fitted, and hollow cylindrical portions 1 and 6, respectively.
Hydraulic rings 19, 20 fitted on the outer circumference of 7, 18
And Hydraulic rings 19 and 20 are 1000kg
When the pressure oil of about / cm ² is supplied, the inner circumference expands so as to reduce the diameter, the hollow cylindrical portions 17 and 18 also reduce the diameter, and the upper and lower drive shafts 3 and 4 fitted therein are brought into a pressed state. Connect. The hydraulic rings 19 and 20 and the hydraulic oil supply / discharge devices 11 and 12 are connected by hydraulic pipes 21 and 22.

The automatic operating device 13 for a hydraulic shaft coupling according to the present invention,
When 14 advances toward wheel portions 9 and 10, pressure oil supply device 60 faces pressure oil supply and discharge devices 11 and 12. Incidentally, the stop positions of the spindle shafts 1 and 2 in FIG. 4 are controlled so that the pressure oil supply / discharge devices 11 and 12 are located directly above or directly below, as shown in FIG.
There is an error within 3 °. The automatic operation devices 11 and 12 absorb the error and are configured to be at predetermined positions with respect to the pressure oil supply / discharge devices 11 and 12.

As shown in FIG. 4, the pressure oil supply / discharge device 11, 1
Pins 86 and 87 are protrudingly provided on the wheel portions 9 and 10 on both sides of the automatic transmission 2.
Copying portions 88 and 89 for 87 are provided. The holding portion of the pressure oil supply device 60 and the hydraulic cylinder 85 is allowed to rotate in the θ direction and swing in the X direction, and the copying portions 88 and 89 follow the pins 86 and 87 to assume a predetermined posture.

Next, the detailed structure of such automatic operation devices 13 and 14 will be described with reference to FIGS. In the figure, reference numeral 60 denotes a pressure oil supply device, 85 denotes a hydraulic cylinder as a pressure oil discharge device, and 88 and 89 denote copying portions. These are attached to the holding unit 90. This holding part 90
A first square case 91 is provided upright, and the first square case 91 is located in the second square case 92.

As shown in FIG. 2, the second square case 9
A shaft 93 is horizontally mounted on 2, and a first square case 91 is supported via a spherical bearing 94 fitted in the center of the shaft 93. In addition, four pressing members 95 on the left, right, upper and lower sides are urged and pressed by springs 96 on each of the four side surfaces of the second square case 94. That is, the first square case 91 is settled at a position parallel to the second square case 92 around the point A. However, when an external force is applied to the first square case 91, the first square case 91 can rotate or swing around the point A. The protrusions 9 are provided at the four corners of the second square case 92.
The projection 97 is guided by a slide guide 98 so as to be slidable up and down.

As shown in FIG. 1, the slide guide 9
8 stands on the base 99. And base 99
The rod end 101 of the hydraulic cylinder 100 fixed to the second case engages with the receiving portion 102 of the second square case 92, and the second square case 92 moves up and down as the hydraulic cylinder 100 expands or contracts. The receiving portion 102 is provided with a side hole 103, and the stopper 105 of the hydraulic cylinder 104 is connected to the side hole 1
03, and the upper limit position of the second square case 92 is fixed.

Next, the automatic operating devices 13 and 14 described above are used.
1 will be described with reference to FIG. During operation, the spindle shafts 1 and 2 are rotating, and the stopper 105 is inserted into the lateral hole 103 by the extension of the hydraulic cylinder 104, and the second
The square case 92 is fixed to the base 99 at the position shown. Accordingly, it is possible to prevent the occurrence of an accident that the holding portion 90 is lowered due to a failure of the hydraulic system of the hydraulic cylinder 100 and the pins 86 and 87 are damaged.

When opening the hydraulic coupling, the spindles 1 and 2 stop at a predetermined position, but stop within an error range of the angle α shown in the figure. Further, the axes of the spindles 1 and 2 may be shifted in the angle θ direction. First, the hydraulic cylinder 10
4 shortens and the stopper 105 comes off as shown.
Then, the hydraulic cylinder 100 extends, and the second square case 92 descends along the slide guide 98. And
The copying portions 88 and 89 hit the pins 86 and 87, and the pin 8
The first square case 91 rotates and swings around the point A while resisting the urging force of the pressing member 95 to imitate the stop errors of the angles α and θ so as to follow 6, 87. as a result,
The axes of the pressure oil supply device 60 with respect to the pressure oil supply / discharge devices 11 and 12 completely match. Then, the supply and discharge of the pressure oil are performed in the order described above. The automatic operation device 14 located on the lower side of FIG. 3 operates in the same manner, except that the up and down operations are reversed.

Next, the pressure oil supply device 60 attached to the automatic operation devices 13 and 14 will be described with reference to FIG. A cylinder body 63 is fitted and fixed in a hole 62 of the holding plate 61.
A piston body 64 is slidably provided in the cylinder body 63, and a large rod 65 and a small rod 66 are protrudingly provided on both sides of the piston body 64. Further, a valve seat member 67 is screwed into the distal end of the large rod 65, and a throttle member 68 is fitted into a center hole of the valve seat member 67. Aperture member 6
Reference numeral 8 has an arcuate oil passage 70 through which pressure oil is passed through an oil passage 69 penetrating the rods 65 and 66, a throttle portion 71, and a tip oil passage 72. The valve seat member 67 can contact the hemisphere 36 through the hole 73 of the holding plate 61. A ring 75 that opens the air nozzle 74 is fitted into the outlet of the hole 73, and the direction of the air nozzle 74 is toward the spherical surface 36. 76 and 77 are ports for the cylinder body 63, and 78 and 79 are the piston bodies 6
4 is a switch for determining the sliding position.

In the above-described pressure oil supply device 60, when the pressure oil is supplied to the port 76, the piston body 64 and the valve seat member 67 are at the positions shown in the drawings. Port 77
Is supplied to the piston body 64, the piston body 64 and the valve seat member 67 advance, and the seat 67a of the valve seat member 67 is pressed against the spherical surface 36. When the valve seat member 67 moves forward, the air shower from the air nozzle 74 moves to the spherical surface 36.
And blows off the contaminants adhering to the surface of the spherical surface 36 to prevent the contaminants from entering the pressurized oil. When the valve seat member 67 is retracted as shown in the figure, the oil in the oil passage 69 is at atmospheric pressure, and the valve seat member 6
There is a possibility that air may enter the oil passage 69 by spilling from the tip of the oil passage 7. However, the flow of oil is blocked by the throttle 71 of the throttle member 68, and at the worst, only air enters the short tip oil passage 72, and the air mixed with the pressure oil does not hinder the sealing of the pressure oil. Can be minimized.

Further, the pressure oil supply / discharge devices 11 and 12 for the above-described pressure oil supply device 60 will be described with reference to FIGS. 6 is a sectional view of the pressure oil supply / discharge device, FIG. 7 is a view taken in the direction of arrow X in FIG. 6, and FIG. 8 is a sectional view taken along line YY in FIG. The pressure oil supply / discharge devices 11 and 12 supply and discharge pressure oil to and from the hydraulic rings 19 and 20 in FIG. 3, and include a check valve mechanism connected to a primary port (oil supply port) and a mechanical mechanism for the check valve mechanism. Opening means.

In FIG. 6 and FIG.
The first main body 31 and the second main body 32 are inserted into the through-hole 30 in an abutting state, and bolted, and a third main body 33 is further screwed into the second main body 32. .

A valve body 35 is inserted into a center hole 34 of the second main body 32 through a seal, and the second main body 32 and the third main body 33 are inserted.
It is tightened and fixed between. The front end of the valve body 35 is a hemisphere 36, and the rear end is a valve seat portion 3 having a spherical seat.
In the center of both 36 and 37, a through hole 39 connected to the first port 38 is formed. A poppet 41 for holding a ball 40 is inserted into the center hole 34 at the tip, and is held by a sleeve 42 in a state where the ball 40 can slide freely through a seal. A disc spring 44 is interposed between the sleeve 42 and the step 43 of the poppet 41, and presses the ball 40 against the valve seat 37. The pressing force of the disc spring 44 is larger than that of the helical spring, and the degree of the pressing force is set to be large enough to crush the contamination of the ball 40 between the valve seats 37 such as dust. The above-described valve seat portion 37, ball 40, and disc spring 44 constitute a check valve mechanism.

The shaft portion 45 of the poppet 41 extends to the first main body 31, and is slidably housed in the first main body 31 as an upper and lower tapered portion 46 and a piston 47. Also, the second
The valve seat 37 and the ball 4
A vertical hole 48 is opened at a position where the first main body 31 is located.
To the second port 49. The piston 47 of the poppet 41 receives the back pressure of the second port 49, and the pressure receiving diameter d1 of the piston 47 is larger than the pressure receiving diameter d2 of the shaft 45 supporting the ball 40.
In addition to the urging force of No. 4, a hydraulic pressing force obtained by multiplying the pressure receiving area difference by the pressure oil pressure acts.

The wheel parts 9, 10 and the first main body 31
Are provided with square holes 50, 51, and a vertical sliding body 52 is fitted into the square hole 51 via a spring 53 while being urged in the illustrated state. As shown in FIG. 8, the vertical sliding body 52 has a bifurcated tapered portion 54 (wedge member) that engages with the vertical tapered portion 46. In the state of FIG.
The upper and lower tapered portions 46 and the forked tapered portion 54 are in a non-engaged state with a slight gap. However, when the vertical sliding body 52 is lowered by an external force, the entire poppet 41 overcomes the pressing force of the disc spring 44 and moves in the anti-pressing direction on the left side of the drawing, forcing the ball 40 from the seating position of the valve seat portion 37. Are separated from each other. The upper and lower taper portions 46, the forked taper portion 54, and the upper and lower sliding members 52 constitute opening means of the check valve mechanism.

In the above-described pressure oil supply / discharge devices 11 and 12, the pressure oil supply device 60 described below is attached to the hemisphere 36 of the valve body 35.
Are press-contacted, and pressurized oil is supplied to the first port 38. At this time, the vertical sliding body 52 is lowered in the direction of the arrow by a cylinder device (not shown), and the ball 40 of the poppet 41 is separated from the valve seat portion 37 of the valve body 35. The pressure oil from the pressure oil supply device 60 reaches the second port 49 from the first port 38 via the vertical hole 48 and the like, and is supplied to the above-described hydraulic cylinder of the hydraulic shaft coupling via the hydraulic pipes 21 and 22. And
When the cylinder device (not shown) with respect to the vertical sliding body 52 is retracted, the vertical sliding body 52 is raised in the direction of the arrow by the urging force of the spring 53 to the position shown in the figure. In this state,
The upper and lower tapered portions 46 and the forked tapered portion 54 are separated from each other, and the ball 40 is pressed against the valve seat portion 37 at a high pressure by the urging force of the disc spring 44 and the hydraulic urging force based on the pressure receiving diameter difference between d1 and d2. Then, the pressure oil supply device 60 for the hemisphere 36 moves away in the direction.

The balls 40 of the pressurized oil supply / discharge devices 11 and 12 and the pressing portion of the valve seat 37 are contaminated and oil may leak, but the ball 40 is strongly pressed by the disc spring 44 against the valve seat 37. Therefore, the contaminants sandwiched between the pressing portions are crushed and the leakage is reduced. For example, a severe condition that the pressure drop of the pressurized oil in 24 hours is within 10% can be satisfied.

[0028]

The automatic operating device for a hydraulic shaft coupling according to the present invention
Even if there is some error in the stop position of the pressure oil supply / discharge device on the shaft side, the first case is connected to the positioning pin regardless of the second case by the automatic alignment operation by the spherical bearing and the urging means. The port of the pressure oil supply / discharge device exactly matches the seat of the pressure oil supply device, so that high pressure oil can be supplied / discharged without leakage.

[Brief description of the drawings]

FIG. 1 is a half sectional view from the side of an automatic operating device for a hydraulic shaft coupling according to the present invention.

FIG. 2 is a half sectional view taken along the line ZZ of FIG. 1;

FIG. 3 is an overall front view of a hydraulic coupling device using the automatic operating device for hydraulic coupling of the present invention.

FIG. 4 is an overall side view of a hydraulic shaft coupling device using the hydraulic shaft coupling automatic operation device of the present invention.

FIG. 5 is a sectional view of a pressure oil supply device.

FIG. 6 is a sectional view of a pressure oil supply / discharge device.

7 is a view as viewed in the direction of the arrow X in FIG. 6;

FIG. 8 is a sectional view taken along the line YY of FIG. 6;

[Explanation of symbols]

 1, 2 spindle shaft 5, 6 hydraulic shaft coupling 11, 12 pressure oil supply / discharge device 60 pressure oil supply device 86, 87 pin 88, 89 copying section 91 first square case 92 second square case 94 spherical bearing 95 push member ( Biasing means) 96 spring (biasing means) 98 slide member 99 base 100 hydraulic cylinder (cylinder device)

Claims (1)

(57) [Claims] 1. A pressure oil supply / discharge device for a hydraulic shaft coupling, which is brought into a connected state by receiving and sealing a supply of pressure oil and opened when the sealed pressure oil is discharged, is provided on the shaft side. An automatic operation device in which a positioning pin protrudes from a shaft around a pressure oil supply / discharge device, and a pressure oil supply device is provided so as to be able to advance and retreat according to the pin. A first case provided with a supply device, a second case supporting a substantially central portion of the first case via a spherical bearing, and a base having a slide member for supporting the second case so as to be able to move forward and backward; An automatic operating device for a hydraulic shaft coupling, comprising: a cylinder device provided between the base and the second case; and a biasing means provided on the second case and pressing the first case from all directions.