JPH034723Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is applicable to steam turbines, gas turbines, and gas turbines having screw gears on the driving side and wheel gears on the driven side.
It is used in the technical field of turning devices that automatically engage and disengage turning devices of rotating bodies such as compressors.

Prior Art As a conventional device of this type, a device as shown in FIG. 7 has been used.

A rotating body having a wheel gear 01 is a screw gear 0
2, manually move the lever 03 in the direction of arrow A, bring the screw gear 02 into contact with the wheel gear 01, and then rotate it in the direction of arrow B.
It was caught in wheel gear 01.

If the mesh does not work well at this time, depending on the relative positional relationship between the wheel gear 01 and the screw gear 02, return the lever 03 to the direction C to adjust the mesh.
2 was separated from the wheel gear 01 and the screw gear 02 was manually rotated in the direction of arrow B or arrow D to change the relative position with respect to the wheel gear 01, and the biting operation was performed again. Screw gear 02
When the wheel was completely engaged with the wheel gear 01, the drive machine 07 was started and the rotating body was turned.

The disadvantages of this type of device are that when transmitting rotation from the driving side screw gear 02 to the driven side wheel gear 01 and when separating the driving side screw gear 02 from the driven side wheel gear 01, a pre-operation is required in each case. Because it requires manual operation, it is not suitable as a turning device for automatically operated rotating bodies.

Problems to be Solved by the Invention The present invention solves the drawbacks of the conventional methods and devices in the turning device for a rotating body having the structure described above, and adds a device that can automatically engage and disengage to reduce the cost. The purpose is to provide a turning device that is easy to use.

Means for Solving the Problems The present invention employs the following means to solve the above-mentioned problems. That is, the turning device includes a lever connected to the screw gear, a fluid pressure cylinder connected to the lever, and a control device that controls a rotation and position sensing device connected to the drive shaft.

Embodiment FIGS. 1 and 2 show the configuration of the device of the present invention. 1st
The figure shows a side sectional view of the device, and FIG. 2 shows a - sectional view of FIG.

The screw gear 2 moves on a drive shaft 6 supported by a gear box 5 via a bearing 4, and is rotated in the direction of arrow B by a drive machine 7 connected to the drive shaft 6 via a key 8 and the drive shaft 6. The other end of the shaft 6 is connected to a rotation and position sensing device 18 .

A pin 10 at the tip of the lever 3 is fitted into a groove of the screw gear 2, and the screw gear 2 slides on the drive shaft 6 due to the movement of the lever 3. The other end of the lever 3 is coupled to a shaft 11 supported by a cover 21.

The cylinder 9 is attached via a pin 19 to a mounting base 20 fixed to a cover 21, and is connected to the lever 3 via a rod 12.

The limit switch 16 is fixed to a cover 21, and a metal fitting 17 with a protrusion for switching the limit switch 16 is fixed to the shaft 11 so that it can come into contact with the limit switch 16 and be separated from it. The control circuit 22 is connected to the limit switch 16, the four-way switching valve 13, the three-way switching valve 14, and the rotation and position sensing device 18.

The four-way switching valve 13 and the three-way switching valve 14 are switched by a signal from a control circuit 22. The four-way switching valve 13 is connected to the cylinder 9 via a hose 15a, the three-way switching valve 14 is connected to the four-way switching valve 13 via a hose 15b, and the other side of the three-way switching valve 14 is connected to the fluid supply port 23. ing.

Examples of use of the device of the present invention will be described using FIGS. 1 to 6. FIG. 1 shows the configuration of the present invention.

Figure 2 is a - cross section of Figure 1, mainly gear box 5.
FIG.

FIG. 3 shows the gears before they start meshing and when they finish disengaging (while the rotating body is in operation).

FIG. 4 shows the state in which the gears are engaged.

FIG. 5 shows a state in which gear meshing has been completed and turning is in progress.

FIG. 6 shows the state in which the gear is being disengaged.

First, when an instruction to start turning is given from a remote location, the rotation and position detection device 18 detects that when the starting end of the teeth of the screw gear 2 comes into contact with the gear 1, the starting end of the screw gear 2 is engaged so that the starting end of the screw gear 2 does not become unable to engage. It is rotated in the direction of arrow B (FIG. 4) until it is in the proper position. When the teeth of the screw gear 2 are in the proper position for engagement, a signal is sent from the rotation and position detection device 18 to the four-way switching valve 13 via the control device 22.
The four-way switching valve 13 is switched, and the cylinder 9 is moved in the direction of arrow A, as shown in FIG. 4, to move the screw gear 2 in the direction of arrow A until it contacts the wheel gear 1.

The control circuit 22 is controlled by a timer that operates for a time longer than the time when the screw gear 2 hits the wheel gear 1.
A signal is sent to the rotation and position detection device 18, and the rotation and detection device 18 rotates the screw gear 2 in the direction of arrow B and meshes with the wheel gear 1. When it is fully engaged, press limit switch 1.
6 is actuated by the metal fitting 17, a signal is sent to the control circuit 22, and the drive machine 7 rotates.

At this time, the control circuit 22 simultaneously sends a signal to the four-way switching valve 13 and the three-way switching valve 14, so that the four-way switching valve 13 and the three-way switching valve 14 are switched as shown in FIG. The screw gear 2 maintains its position due to the reaction force caused by the rotation.

When the rotating body starts operating and the wheel gear 1 runs faster than the turning speed as shown in FIG.
direction, and use the metal fitting 17 to release the limit switch 1.
6 is switched, a signal is sent to the control circuit 22, and the drive machine 7 is stopped. At the same time, a signal is sent from the control circuit 22 to the three-way switching valve 14, the three-way switching valve 14 switches, the cylinder 9 moves in the direction of arrow C, and the screw gear 2
is removed from the wheel gear 1 and assumes the initial state shown in FIG.

Effects of the invention According to the above-described configuration, automatic engagement and disengagement is possible based on signals from a remote location, no manual operation is required on the machine side, and automatic operation of the turning device is possible.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of a turning device for a rotating body according to the present invention, and FIG. 2 is a -
3 is a sectional view showing the gears before they start meshing and the end of disengagement; FIG. 4 is a sectional view showing the gears in mesh; FIG. 5 is a sectional view when the gears are fully engaged. FIG. 6 is a cross-sectional view showing a state during turning, FIG. 6 is a cross-sectional view showing a gear being disengaged, and FIG. 7 is a cross-sectional view showing the configuration of a conventional turning device. 1...Wheel gear, 2...Screw gear, 3...
Lever, 4...Bearing, 5...Gear box, 6...Drive shaft, 7...Driver, 8...Key, 9...Cylinder, 10...Pin, 11...Shaft, 12...Rod, 13...Four-way switching valve, 14...Three-way switching valve,
15a, 15b...Hose, 16...Limit switch, 17...Metal fittings, 18...Rotation and position detection device, 19...Pin, 20...Mounting base, 21
... Cover, 22 ... Control device, 23 ... Fluid supply port.

Claims (1)

[Scope of utility model registration request] A wheel gear interlockingly connected to a rotated body, a screw gear that meshes with the teeth of the gear and is attached to a drive shaft connected to a drive device so as to be movable in the axial direction thereof, and one end of the drive shaft. A turning device for a rotating body comprising a rotation and position sensing device coupled to a lever, the lever coupled to the screw gear;
A turning device for a rotating body, comprising a fluid pressure cylinder connected to the lever, and a control device for controlling a rotation and position sensing device connected to the drive shaft.