JPS5937289Y2 - Roll yoke cleaning equipment for rolling mills - Google Patents

Description

[Detailed description of the invention] This invention is a roll chock cleaning device for a rolling mill.
The present invention relates to a cleaning device for a roll chock that is attached to both ends of a rolling roll via bearings.

Generally, a roll chock in a rolling mill is formed into a rectangular tube shape with a shaft hole in the center that receives the end of the roll, and dovetail-shaped sliding surfaces extending in the vertical direction on both sides. The end of the roll is rotatably supported through a bearing in the shaft hole of the roll chock, and the roll chock is supported freely vertically in a housing having a guide surface corresponding to the sliding surface, and the shaft hole Lubricant is supplied to the sliding surface portion and the sliding surface portion by an appropriate method to reduce friction and wear and prevent seizure.

However, the lubricant deteriorates due to long-term use and loses its lubrication life, so it is necessary to periodically clean the roll chock to wash off the lubricant that has adhered to the shaft hole and the slide surface. .

Therefore, when cleaning the roll chock, conventionally, a pair of conveyor rails is laid outside the roll in the axial direction, and on the side of the rail that is away from the rolling roll,
A cleaning device having an inverted U-shaped nozzle lance with a large number of nozzles arranged in a row is installed, and a pulling device pulls out the roll chock from the rolling roll, places the roll chock on a truck on the rail, and uses this truck to remove the roll chock from the rolling roll. transporting the roll chock into the cleaning device and cleaning the slide surface and top surface on both sides of the roll chock by reciprocating the roll chock with respect to the nozzle lance;
After that, the movement of the roll chock is stopped, and the shaft hole of the roll chock is cleaned by inputting with a bundler, and then by spraying high-pressure water with a nozzle, which requires a lot of effort. The cleaning efficiency was poor compared to what was needed.

By the way, the reason why it is necessary to clean the shaft hole of the roll chock while holding the bundler and nozzle is that a dustproof cover is attached to the outer surface of the shaft hole in the roll chock, and the reason why the shaft hole of the roll chock is cleaned after being pulled out from the rolling roll is cannot be turned over on the trolley in order to prevent the positional relationship with the bearing remaining on the rolling roll side from getting out of order, and furthermore, there is only limited space outside the rolling roll in the axial direction in the steelworks. Since the roll chock can be conveyed a predetermined distance only in the pulling direction, even if the cleaning device is provided with a nozzle for cleaning the shaft hole of the roll chock, the nozzle for cleaning the shaft hole will not work when the roll chock is moved for cleaning. It collides with the cover of the roll chock, making it impossible to clean the shaft hole at all.

The present invention was devised in view of the above-mentioned conventional problems, and enables efficient cleaning with less effort. A pair of first nozzle lances extending in the vertical direction are fixed to the movable frame at a predetermined interval in a direction perpendicular to the moving direction of the movable frame, and a horizontal axis in the same direction as the moving direction of the movable frame is fixed to the movable frame. The present invention is characterized in that a swingable arm is provided at the center, and a second nozzle lance that extends forward in the forward movement direction of the movable frame is rotatably provided at the tip of this arm.

Embodiments of the present invention will be described below based on the drawings.

In the figure, 1 is a box-shaped fixed frame with a roll-up shutter 2 on the front and an open bottom, and 3 is a movable frame that is supported in the upper part of the fixed frame 1 so as to be able to freely reciprocate. The fixed frame 1 has a sealed structure except for the bottom surface, and a pair of rails 4, 4 are installed on the upper part of the fixed frame 1, and two drive rails are installed near both longitudinal ends of these rails 4, 4. Sprockets 5, 5 and two UFJh sprockets 6, 6 are rotatably supported.

Two drive chains 77.7 are hung between the drive sprockets 5, 5 and the driven sprocket 6.6, and the support shafts 8 of the drive sprockets 5, -5 are connected to the intermediate sprockets 9 and the chain 10. The movable frame 3 is supported by the rails 4, 4 via four wheels 12, and a plurality of arms (four in the drawing) are connected to the output shaft of the drive device 11 through the movable frame 3. 13...
are provided protrudingly, and the tips of these arms 13 are attached to the drive chains 77, 7 by attachment means such as attachment pins, and the movable frame 3 is moved to the rails 4, 7 by the drive of the drive device 11. Furthermore, the fixed frame 1 is provided with support pieces 14, 14 extending along the drive chains 77, 7, and these support pieces 14.14
1st. Second limit switches 15 and 16 are provided at a predetermined interval in the moving direction of the movable frame 3, and the limit switches 15 and 16 are provided on the drive chains 77 and 7, respectively.
A hit (not shown) that contacts the 16 operating members is provided, and when the movable frame 3 moves forward a predetermined distance, the hit operates the first limit switch 15. When the movable frame 3 moves back a predetermined distance by causing the driving device 11 to reversely rotate in response to the signal, the second limit switch 16 is operated by the hit, and the second limit switch 16 is activated. The operation signal causes the driving device 11 to rotate in the forward direction, thereby causing the movable frame 3 to move forward.

Further, the movable frame 3 is formed by framing a section steel, and the wheels 12 are pivotally supported at the front and rear parts of the movable frame 3, and a frame extending in the vertical direction is provided at the rear part of the movable frame 3. A pair of first nozzle lances 17 and 18 are fixed at a predetermined interval in a direction perpendicular to the direction of movement of the movable frame 3, and a variable speed motor 19 and a rotary motor that outputs angular displacement motion are mounted on the upper part of the movable frame 3. The actuator 20 is supported, and a horizontal shaft 21 extending in the same direction as the moving direction of the movable frame 3 is rotatably supported at the lower part.

An arm 2 extending downwardly is attached to the horizontal axis 21.
2 in a non-rotatable manner, and the 1st. 2nd gear 23.
A rotary body 25 having a rotor 24 is freely rotatably supported,
A second nozzle lance 26 extending forward in the forward movement direction of the movable frame 3 (arrow X direction in FIG. 1) is rotatably supported at the tip of the arm 22, and a third gear is attached to the base of the second nozzle lance 26. 27 is fixed, and a chino 29. , 30 are hung so that the second nozzle lance 26 is rotated by the drive of the motor 19, while the output shaft 20a of the rotary actuator 20 and the water half shaft 21 are powered by a bevel gear. The actuator 2 is interlocked and connected via a transmission mechanism 31.
0 rotates the horizontal shaft 21 by a predetermined angle, causing the arm 22 to swing.

Note that the first nozzle lances 17, 18 and the second nozzle lance 26 have a large number of nozzles or injection holes arranged in their longitudinal direction, and high pressure is applied to the radially outward side of each nozzle lance 17, 18, 26. The nozzle lances 17, 18, 26 are connected to the water pipe 32.
33 to a teponf device (not shown).

Furthermore, although the illustrated first nozzle lances 17 and 18 have their upper ends communicatively connected by another nozzle lance 34, it is not necessary to communicably connect them.

However, as shown in the figure, there is an advantage that the upper surface of the roll chock C can be cleaned more easily by using the nozzle lance 34 and jetting high-pressure water from the nozzle lance 34.

Further, the rotary actuator 20 has an actuating body (not shown) such as a vane inside the housing 20b, which is equipped with a suction port and a discharge port that communicate with a hydraulic pressure or air supply device (not shown). By supplying hydraulic pressure or air to the operating body to operate the operating body, the output shaft 20a that supports the operating body is rotated by a predetermined angle.

In the figure, reference numeral 35 denotes an exhaust device that is attached to the upper part of the fixed frame 1 and exhausts the gas inside the frame 1 to the outside, and includes an exhaust pipe 35a that opens into the frame 1, and an exhaust pipe 35a that opens into the frame 1. A fan that freely rotates inside (not shown)
and a motor 35b of the fan.

Further, 36 is a take-up reel for winding up the middle portion of the water pipe 33, and 37 is a take-up motor for the shutter 2.

The cleaning device of the present invention is constructed as described above, and is in front of the roll chock C in the transport direction, which is transported in a direction away from the roll chock C by a trolley on the roll chock transport rail L laid outside in the axial direction of the roll. (Install the shutter 2 of the fixed frame 1 in the
The side faces the rolling rolls.

Before cleaning the roll chock, the arm 22 having the second nozzle lance 26 at its tip is in the raised position, and when the shutter 2 of the fixed frame 1 is opened, the roll chock C placed on the trolley on the transport rail is removed. without being obstructed by the arm 22 and the second nozzle lance 26,
It can be transported into the fixed frame 1.

When cleaning the roll chock, the shutter take-up motor 37 is driven in the forward rotation direction to open the shutter 2, and the roll chock C placed on the trolley is inserted into the fixed frame 1 through the opening by the shutter 2 of the fixed frame 1. conveyed and passed between the first nozzle lances 17 and 18,
After that, the motor 37 is reversely rotated to close the shutter 2 and close the abutment (not shown) provided on the truck.
to operate a limit switch (not shown) provided at the end of the conveyance rail L, and actuate the hydraulic pressure or air supply device in response to a signal from the limit switch;
Hydraulic pressure or air is supplied into the housing 20b of the actuator 20, and the output shaft 20a of the actuator 20 is
The horizontal shaft 21 interlocked with the output shaft 20a through the power transmission mechanism 31 is rotated in one direction by a predetermined angle, and the arm 22 non-rotatably attached to the horizontal shaft 21 is swung in the downward direction. A second nozzle lance 26 provided at the tip of the roll chock C is disposed behind the center of the shaft hole of the roll chock C, and then the variable speed motor 19 is driven to rotate the second nozzle lance 26, and the second nozzle lance 26 is rotated. A second solenoid valve (not shown) interposed in the water supply hose 33 for the lance 26 is opened to supply high-pressure water from the pump device to the second nozzle lance 26, and high-pressure water is supplied from the second nozzle lance 26. The second nozzle lance 26 is advanced into the shaft hole of the opening chock C by driving the drive device 11 to move the movable frame 3 forward along the rails 4, 4, and cleaning the hole, the second
At the position where the movable frame 3 is moved back by repeating the entry and exit of the nozzle lance 26 into and out of the shaft hole for a predetermined period of time,
A timer (not shown) temporarily stops the drive of the drive device, closes the second solenoid valve and stops the drive of the variable speed motor 19, and further stops the drive of the actuator 2.
The output shaft 20a of the actuator and the horizontal shaft 21 interlocked with the output shaft are switched by switching the switching valve installed in the oil pressure or air supply passage to be supplied to the No.
is rotated in the other direction by a predetermined angle to swing the arm 22 in the upward direction by a predetermined angle, and after the swinging of the arm 22 is completed, the 1 solenoid valve (not shown) is opened to supply high-pressure water from the pump device to the first nozzle lance 17, 18, and inject high-pressure water from the first nozzle lance 17, 18, and at the same time, the drive device 11 By driving the movable frame 3 to move forward and backward along the rails 4, 4, high pressure water injected from the first nozzle lances 17, 18 is sprayed onto both sides of the roll chock C, and the roll chock C is cleaning the sliding surface portions provided on both sides of the movable frame 3, repeating the reciprocating motion of the movable frame 3 for a predetermined period of time, and closing the first electromagnetic valve by a timer at the position where the movable frame 3 is reciprocated; The driving of the drive device 11 is stopped, and then the motor 37 is driven to wind up the shutter 2, the front surface of the fixed frame 1 is opened, and the roll chock C is taken out from inside the fixed frame 1.

In addition, when cleaning the roll chock, the first nozzle lance 17
The internal pressure inside the fixed frame 1 increases due to the high pressure water injected from the second nozzle lance 26 and the high pressure water injected into the fixed frame 1, and a part of the high pressure water injected into the fixed frame 1 leaks to the outside from the gap in the turning frame 1. The fan of the exhaust device 35 is rotated to exhaust the gas inside the fixed frame 1 to the outside, thereby lowering the internal pressure inside the fixed frame.

Further, the drive device 11, hydraulic or air supply device, variable speed motor 19, shutter take-up motor 37, limit switch, timer, solenoid valve, switching valve, exhaust device 35 described above
are electrically connected to each other so that the process from the start to the end of cleaning of the roll chock is automatically performed.

In the above description, after cleaning the shaft hole of the roll chock, both sides of the roll chock were cleaned, but the shaft hole and both sides may be cleaned at the same time.

As described above, the present invention supports a movable frame on a fixed frame so as to freely reciprocate, and a pair of first nozzle lances extending in the vertical direction are attached to the oT frame in a direction perpendicular to the moving direction of the movable frame. An arm is provided which is fixed at a predetermined interval and is swingable about a horizontal axis in the same direction as the moving direction of the movable frame, and at the tip of this arm, a groove extending forward in the forward movement direction of the movable frame is provided. By providing two nozzle lances that are freely rotatable and swinging the arm, the shaft hole of the roll chock whose outer surface is closed with a dustproof cover can be cleaned, while the movable frame is reciprocated. The slide surface portions on both sides of the roll chock are cleaned with high pressure water jetted from the first nozzle lance while the movable frame is reciprocated, and the high pressure water jetted from the second nozzle lance while rotating the 27th nozzle lance. Since the shaft hole of the roll chock is cleaned with water, the labor required for cleaning can be greatly reduced and the cleaning efficiency can be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is the same (rear view), Fig. 3 is a plan view, and Fig. 4 is an explanatory diagram of the mechanism for swinging the arm. 1. ...Fixed frame, 3...Movable frame, 17.18...First nozzle lance, 21
...Horizontal axis, 22...Arm, 26.
...Second nozzle lance.

Claims (1)

[Scope of utility model registration request] A movable frame is supported on a fixed frame for free reciprocation,
A pair of first nozzle lances extending in the vertical direction are fixed to the movable frame at a predetermined interval in a direction orthogonal to the moving direction of the movable frame, and a horizontal axis in the same direction as the moving direction of the movable frame. A roll chock cleaning device for a rolling mill, characterized in that an arm is provided that can swing around the center, and a second nozzle lance that extends forward in the forward movement direction of the movable frame is rotatably provided at the tip of the arm. .