JP3252312B2 - Rotary kiln slipper lubrication unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating apparatus for lubricating between a tire inner peripheral surface constituting a slipper portion of a rotary kiln and a shell-side slide block in contact with the inner peripheral surface.

[0002]

2. Description of the Related Art The body of a rotary kiln is a steel cylinder which is rotatable about its axis and is slightly inclined from horizontal, and is entirely or partially lined with a refractory material. The size of the kiln is, for example, several tens of meters (for example, 60
m), the inner diameter is several meters. The support is 3-4
At each support position, as shown in FIG.
A slide block 2 is provided on the outer periphery of a shell 1 of the rotary kiln body, and a tire 3 having an inner peripheral surface in contact with the slide block 2 is provided. The tire 3 is supported and rotated by a pair of rollers 4 in contact with the outer peripheral surface of the tire 3. It is. A large number of slide blocks 2 are provided with a gap e in the circumferential direction, are welded to the outer surface of the shell 1 together with the reinforcing ribs 5, and are formed on a surface facing the inner peripheral surface 3 a of the tire 3 and both side surfaces of the tire 3. It has a groove-like portion consisting of an opposing surface near the inner edge. The tire 3 has a width of about 1 m, a ring having a uniform cross section in the circumferential direction and a rectangular shape. The inner diameter is determined in consideration of thermal expansion. There is some room between the surface and the surface facing the surface. In the rotation of the rotary kiln body, slippage occurs between the slide block 2 and the tire 3, and the tire 3 also rotates. Such a rotary kiln is lubricated with oil or fat between the slide block 2 and the inner peripheral surface 3a of the tire.

A conventional technique of this type is disclosed in Japanese Utility Model Laid-Open No. 2-1.
No. 24492. The schematic configuration of the rotary kiln tire 10 is shown in FIG.
1, a base 102 fixed to the floor is arranged, an arm 103 is swingably provided on the base 102, and a lubricating oil injection nozzle 104 and a roller 105 are attached to the tip of the arm 103. The arm 103 is disposed at a position where the arm 103 abuts a slide block 107 intermittently provided on the outer periphery of a shell 106 of the rotary kiln,
A limiter 108 detects an intermittent swinging movement of the arm 103 accompanying the rotation of the rotary kiln, and operates a solenoid valve based on the detection signal to control a lubricating oil injection timing. Lubricating oil is supplied to the lubricating oil injection nozzle 104 from a pump.

[0004] The roller is a slide block 107.
When the arm 103 comes off, the arm 103
The stopper 1 is swung downward in FIG.
09 and stands by. The arm 103 at this standby position swings upward when the roller 105 comes into contact with the slide block 107 when the next slide block 107 turns and rotates,
The oscillating movement is detected by the limit switch 108, and the injection timing of the oil and fat can be detected.

[0005]

However, in the lubricating apparatus shown in FIG. 10, the rotary kiln is stopped due to, for example, a power failure or the like, and the shell 106 is moved in the opposite direction (the slide block 107 shown in FIG. 10) due to the imbalance of the weight of the rotary kiln. Is rotated downwards),
The slide block 107 collides with the roller 105 provided on the arm 103 at the standby position supported by the stopper 109, causing the arm 103 to bend, thereby damaging the arm 103 and, consequently, the greasing device. There is.

[0006] The present invention provides a greasing device that can prevent breakage of the swing arm and, consequently, the rotary kiln slipper greasing device when the rotary kiln rotates in a direction opposite to a predetermined forward rotation direction. The purpose is to do.

[0007]

According to a first aspect of the present invention, there is provided a rotary kiln slipper unit lubricating unit including a nozzle directed to a position through which a rotating predetermined lubricating part of the rotary kiln slipper unit passes, and a detector provided on the rotary kiln. Is turned in a predetermined positive direction to drive a swing arm provided at a fixed position in a predetermined direction to detect a period in which the nozzle is opposed to the greasing portion, and a detection unit detects the period. A valve for opening and channeling a passage between the nozzle and the pressurized lubricating oil source based on a rotary kiln slipper unit lubricating apparatus comprising:
A first for urging the swing arm, which is driven by the detection body in the predetermined direction and swings, in a direction toward the home position;
A biasing means for stopping the swing arm, which is disengaged from the detection body and is biased by the first biasing means and swings in a direction toward the home position, at the home position; And a safety means for avoiding interference between the detection body and the swing arm when the detection body turns in the opposite direction opposite to the predetermined forward direction.

[0008] In a second aspect of the present invention, in the first aspect of the invention, the safety means includes:
The swing arm is divided into a tip end on the side that comes into contact with the detection body and a base end on the center position side of the swing, and the tip is pressed by the detection body that turns in the opposite direction to detect the tip end. A second position is provided so as to be able to bend in the pressing direction from a detection position capable of contacting the body so as to avoid interference between the detection body and the front end portion, and to return the front end portion separated from the detection body to the detection position. The present invention is characterized in that it is configured to be provided with an urging means.

[0009]

According to the first and second aspects of the present invention, the swing arm provided at a fixed position is driven in a predetermined direction by the detection body provided in the rotary kiln turning in a predetermined forward direction. By this driving, the detecting means can detect a period in which the nozzle is facing the greasing portion that is sequentially swirled around. Then, the valve in the passage between the nozzle and the pressurized lubricating oil source is opened based on the detection by the detecting means, and the greasing is sequentially performed on the greasing portion.

[0010] When the swing arm is disengaged from the detection body that turns in the forward direction, the swing arm is returned to the direction toward the home position by the urging force of the first urging means, and is fixed by the stopping means. Stopped in position.

Next, when the rotary kiln turns in a direction opposite to the predetermined forward direction and the detection body turns in that direction, the safety means operates the swing arm which stops at a fixed position and the detection body. Avoid interference. Thereby, when the rotary kiln turns in the opposite direction, the swing arm,
Consequently, it is possible to prevent the rotary kiln slipper unit lubrication device from being damaged.

According to the second aspect of the invention, when the rotary kiln and the detection body turn in the opposite direction, the tip of the swinging arm that stops at a fixed position is pressed by the detection body, and the detection can be brought into contact with the detection body. The detection object is bent in the same direction in which the detection object moves from the position, whereby interference between the detection object and the swing arm can be avoided. Then, when the distal end comes off the detection body, the second urging means returns the position from the position avoiding the distal end to the detection position. In this manner, the tip of the swing arm that has returned to the detection position is bent so as to avoid mutual interference with the detection object that turns around in the reverse direction and turns around in the forward direction. The detection object that moves around is driven in the same direction (predetermined direction) as its forward direction, and as a result, a predetermined lubrication timing can be detected.

[0013]

An embodiment of the present invention will be described with reference to the drawings.
The lubricating apparatus of this embodiment is applied to lubricating a slipper portion of a rotary kiln, and the rotary kiln is used for firing cement, and the rotary kiln shown in FIG. 11 (hereinafter sometimes referred to as kiln only). Is a lubrication device for the slipper section. As shown in FIG. 1, the lubricating apparatus includes an integrally formed shot valve unit 15, and each of four slippers at first to fourth fulcrums supporting the rotation of the long kiln in the middle. The shot valve units 15 are permanently installed near the sections, and are operated at appropriate time intervals. Hereinafter, one shot valve unit 15 will be described in detail.

The shot valve unit 15 includes the nozzle 1
0, detecting means 11 and valve 12. The detecting means 11 is provided with a safety means which is a feature of the present invention. The shot valve unit 15 is provided on a base 20, as shown in FIGS. 1 and 2, and the base 20 is provided on a support suitable for the site indicated by an imaginary line at an appropriate position close to the slipper portion, and attached to the support. is there. The direction of the nozzle 10 provided on the base 20 at the fixed position is indicated by an arrow 30.
As shown in FIG. 1, a predetermined lubricating portion (slide block 2,
Between the outer peripheral surface of the shell 1 and the inner peripheral surface 3a of the tire)
The grease 21 is directed to a position where the grease 21 passes, and is provided so as to be able to grease the predetermined greasing portion 21.

The detecting means 11 detects a period in which the nozzle 10 faces the greasing portion 21 and applies a force to open the valve to the valve 12 during the detecting period. As shown in FIG. 1, FIG. 2, FIG. 9 and FIG. The detection body 41 is located at an outer end with respect to the kiln center with respect to the reinforcing ribs 5 provided two by two on the slide blocks 2 of the kiln on the rear side in the kiln rotation direction (indicated by an arrow 44 in FIG. 1). Round rods were welded so as to be parallel to the central axis of the kiln. The position of each of the detectors 41 is determined by the slide block 2 with respect to the kiln center axis.
Is the outermost part, and the tip protrudes to the side opposite to the tire 3. Each of the detectors 41 is rotated at the same distance from the kiln central axis so that each detector 41 rotates together with the rotation of the shell 1 so as to draw the same rotation trajectory, and each detector 41 is located behind the shell (kiln) 1 in the rotation direction. Of the slide block 2 to the gap f (see FIG. 1)
Is the same. It should be noted that the detection member 41 is engaged with the reinforcing rib 5 in accordance with the mounting state of the shot valve unit 15 so that the detecting member 41 is connected to the reinforcing rib 5.
It may be.

As shown in FIGS. 1 and 2, the swing arm 42 has a base end 42b swingably supported by a shaft 45 on a base 20, and has a roller 46 at a tip end 42a.
The swing arm 42 is located within the rotation trajectory of the detection body 41 on which the roller 46 at the leading end rotates, and swings to one side so that the locked portion 114 at the lower end moves to the stopper 110. The tension spring 47 (the tension spring 47 is the first biasing means according to claim 1) is pulled to an initial position (position indicated by a virtual line in FIG. 1) in contact with the stop means. Have been. The swing arm 42 is driven by the detection body 41 by the rotation of the kiln, swings the angle θ0 and θ1 about the axis 45, and when the swing arm 42 deviates from the trajectory of the detection body 41, the swing arm 42 returns to the initial position by the action of the tension spring 47. Return. While the swing arm 42 swings the angle θ1, the nozzle 1
0 surely faces the greasing portion 21 (see FIGS. 1 and 3).

The swing arm 42 is provided with safety means 111 as shown in FIG. Safety measures 1
Reference numeral 11 denotes a distal end portion 42a and a proximal end portion 42b that constitute the swing arm 42, a connection shaft 112 that connects the distal end portion 42a and the proximal end portion 42b, and a tension spring 113. (This is the second biasing means described above.)
And, it consists of.

The tip 42a of the swing arm 42 has
As shown in FIG. 5, a through hole is provided, and a female screw 115 is provided in the through hole. A bolt 116 is screwed onto the female screw 115, and the bolt 116 is fastened to the tip portion 42a by a nut 117. The right end 116a of the fastened bolt 116 protrudes from the right opening of the through hole, and is in contact with the locking portion 118 formed on the base end 42b. Bolt 1
In a state where the right end portion 116a of the 16 is in contact with the locking portion 118 (the detection position according to claim 2), the tip portion 42a swings clockwise in FIG. Are regulated and locked. Therefore, when the detection body 41 turns around in the predetermined positive direction 44,
As shown in FIG. 3, the entirety of the roller 46, that is, the swing arm 42, is moved by the detection body 41 in a predetermined direction 119 (detection body 41).
In the direction in which it moves) and swings about the shaft 45.

However, the tip 42a can swing about the connecting shaft 112 in the counterclockwise direction in FIG.
That is, as shown in FIG. 4, when the detection body 41 turns around in the opposite direction 120 opposite to the predetermined forward direction 44, the roller 46, that is, the tip end portion 42a of the swing arm 42, The direction 121 opposite to the predetermined direction 119
(In the direction in which the detection body 41 moves) and the connection shaft 11 is driven.
Swing about 2 At this time, since the locked portion 114 provided on the base end portion 42b of the swing arm 42 is in contact with the stopper 110, the base end portion 4 of the swing arm 42
2b is stopped by the stopper 110 at the initial position.

As shown in FIG. 3, a protrusion 122 is provided on the right side of the upper end of the base end 42b of the swing arm 42.
The projection 122 and the tip 42a are
It is connected via a tension spring 113. These two
As shown in FIG. 4, the tension spring 113 swings when the distal end portion 42 a is driven counterclockwise by the detection body 41, and then, when the detection body 41 comes off the roller 46, It functions to return the portion 42a to the detection position shown in FIG.

The valve 12 is a shot valve of a poppet type, and is provided inside covers 91 and 92 for shielding heat. As shown in FIG. 8A, the valve 12 has a supply port 51 and a supply port 52 for oil and fat in a valve body 50, and a poppet valve body 53 is provided inside the valve body 50 so as to open and close the gap therebetween. It is. And poppet valve 5
3 has one end in a valve closing direction by a valve closing spring 54, as shown in FIG.
, And is provided so that one end of a rod-shaped driven portion 55 faces the other end. The driven portion 55 has the other end protruding from the outer surface of the main body 50, and the other end is pressed to drive the poppet valve body 53 to open. In the drawing, reference numeral 56 denotes a return spring of the driven portion,
The driven portion 55 is pressed in a direction away from the poppet valve body 53, and returns to the original projected state when the pressing force of the driven portion 55 is released. The valve 12 is fixed to the base 20, and the outlet 52 is connected to the nozzle 10 via a greasing pipe 57.

The transmission mechanism 43 is provided for the swing arm 42 and the driven portion 55, and includes a cam 58 and a one-handed lever 59, as shown in FIGS. The cam 58 is provided coaxially with the shaft 45 at the base of the swing arm 42, and is rotated by a predetermined angle (θ0 + θ2) together with the swing of the swing arm 42. The one-handed lever 59 has a hook-like shape and has a cam 5 at its tip.
8, the base portion of which is swingably supported by a shaft 61 provided on the valve body 50, and the bent portion is reduced to a smaller angle from a state of about 90 degrees, that is, the angle β ≒ 45 °
It is articulated and connected by a shaft so as to be able to bend, and a spring (not shown) is interposed so as to return to the state of 90 degrees. The portion between the bent portion and the base portion of the one-handed lever 59 comes into contact with the protruding end of the driven portion 55 of the shot valve 12.

When the swing arm 42 swings from the initial position by the angle θ0, the transmission mechanism 43 also moves the cam 58 to the angle θ0.
The roller 60 rotates and drives the roller 60 near the end of the rotation to swing the one-handed lever 59, so that the driven portion 55 is pressed and the shot valve 12 is opened. This swing arm 42
(The position indicated by the solid line in FIG. 1) is the valve opening position. Next, when the swing arm 42 reaches a position rotated by a slightly smaller angle θ1, the roller 60 is disengaged from the cam 58, the pressing of the driven portion 55 is released, and the shot valve 12 is closed. When the angle θ1 is reached, the roller 46 comes off the detection body 41. When the swing arm 42 swings by the angle θ1 and then returns to the original position, the roller 60 is pressed again by the cam 58, but the bending portion of the one-handed lever 59 is bent by receiving a component force in the bending direction, and the shot valve is bent. 12 does not open. That is, the configuration of this bent portion is such that the shot valve 12 does not open when the cam 36 rotates back.

The rotary kiln slipper greasing device configured as described above operates as follows. As shown in FIG. 3, when the detection body 41 provided in the rotary kiln turns in a predetermined forward direction 44, the entire swing arm 42 in which the detection body 41 stops at a fixed position is moved in a predetermined direction 119.
The swing of the swing arm 42 is transmitted by the transmission mechanism 43.
To the shot valve 12, the shot valve 12 is opened, oil and fat is injected from the nozzle 10, and the oil can be supplied to the oil supply portion 21 which turns and turns around one after another. As described above, when the detection body 41 turns in the forward direction 44 and the detection body 41 presses the roller 46 in the same direction, as shown in FIG. Locking part 1 formed on end 42b
18, the connecting shaft 112 of the distal end portion 42a
The clockwise swing in FIG. 3 is regulated and locked. Therefore, the detection body 41 is in the predetermined forward direction 4
4, as shown in FIG. 3, the roller 46, that is, the distal end portion 42 a and the proximal end portion 42 b of the swing arm 42 are moved by the detector 41 in a predetermined direction 119 (movement of the detector 41). Shaft 45 (see FIG. 1).
Oscillates about the center, thereby detecting the timing of lubrication. As a result, the greasing part 21
Can be sequentially lubricated. When the detection body 41 comes off the roller 46, the swing arm 42 is pulled by the tension spring 47 shown in FIG. 1 and swings about the shaft 45 in the counterclockwise direction in FIG. Move to the position indicated by. When the swing arm 42 moves to the position shown by the two-dot chain line, it is locked by the stopper 110 and stops at the initial position.

Next, for example, when the rotary kiln stops due to a power failure or the like and rotates in reverse due to the imbalance of the weight of the rotary kiln, that is, when the detector 41 is turned off as shown in FIG.
When the detector 41 turns in the reverse direction 120 and presses the roller 46 in the reverse direction, the roller 46, that is, the tip of the swing arm is driven in the reverse direction 121 by the detector to connect the connecting shaft. It swings counterclockwise about 112. At this time, the two tension springs 113
Although a counterforce is generated against the counterclockwise swing of FIG. 2a in FIG. 4, the distal end portion 42a swings counterclockwise against this counterforce. Then, the base end 42 of the swing arm 42
As shown in FIG. 1, the locked portion 114 of FIG.
10 so that the proximal end 42b is
The counterclockwise swing about the shaft 45 is locked and stopped at the initial position. Therefore, the detection body 41 is
Is pressed in the reverse direction 121, the base end 42b of the swing arm 42 remains stopped at the initial position, and only the distal end 42a swings counterclockwise about the connecting shaft 112. As described above, when the detection body 41 pivots in the opposite direction 121, the distal end portion 42 a of the swing arm 42 can swing in the opposite direction about the connection shaft 112, so that the detection body 41 Damage to the swing arm 42 due to a collision can be prevented. The damage to the swing arm 42 and the damage to the rotary kiln slipper portion greasing device can be prevented.
1, it is possible to continue to perform the lubrication reliably, and as a result, it is possible to prevent the rotary kiln from being damaged.

When the detection body 41 moves in the reverse direction 120 and comes off the roller 46, the tip end portion 42a is pulled by the tension spring 113 and swings clockwise about the connecting shaft 112 in FIG. It returns to the detection position shown in FIG. When the tip end 42a returns to the detection position, the swing arm 42 becomes the home position (initial position), and when the detector 41 moves in the forward direction 44, it is driven by the detector 41 to detect the lubrication timing. can do.

By thus providing the safety means 111 with a purely mechanical structure as shown in FIG. 4, malfunctions due to heat can be reduced as compared with the case where the safety means 111 has an electric means using an electric motor. It does not require a power source and is economical.

Next, the nozzle angle changing means 14 and the arm retracting means 13 provided in the shot valve unit 15 of the above embodiment will be described. As shown in FIG.
0 is directed to a position where the rotating predetermined greasing portion 21 of the rotary kiln slipper portion passes, as indicated by an arrow 30 in the figure, and another greasing portion (slide block 2). , 3 sides of the tire between 2)
The nozzle angle changing means 14 is provided so that the nozzle 22 can be changed by a certain angle α set within an angle range of about 20 ° so as to supply oil. That is, as shown in FIGS. 6 and 7, the nozzle 10 is bent and opened by 90 ° with respect to the axis of the nozzle base 23 fixed at a fixed position on the base 20 side. Rotatable holder 24
By fixing the holder 24 to the base 23 with a set screw 25 at an arbitrary rotation position, the nozzle 10 is attached to the base 2 at the fixed position with respect to the holder 24.
It is configured to be changeable around the axis 3 within an angle range of about 20 °, and the change is performed by the air cylinder 26.

In the air cylinder 26, as shown in FIG. 6, the outer end of a piston rod 27 is connected to a holder 24 via a shaft 28, and the head side of the cylinder 29 is connected to the nozzle 10 in the injection direction (arrow). 30) It is connected by a shaft 32 to an extension 31 extending rearward. When the air cylinder 26 expands and contracts, the nozzle 10 rotates around the axis of the nozzle base 23 by an angle α with respect to the holder 24. In the figure, reference numeral 33 denotes a compressed air supply port, which communicates with the head side pressure chamber via a passage formed in the piston rod 27. The compressed air supply port 33 has an air cylinder 2
A flexible portion or a flexible air supply pipe is connected so as not to hinder the movement of the air supply tube 6. In order to adjust the angle α, an adjusting screw 34 and an adjusting nut 35 are provided as shown in FIGS. The adjusting screw 34 is screwed into a female screw portion 36 provided on the holder 24, and the tip is opposed to the head side of the cylinder 29, and the adjusting nut 35 is screwed into a male screw portion 37 provided on the piston rod 27. Is opposed to the rod-side end of the cylinder 29. By adjusting these, the angle α can be adjusted, and the state is indicated by a scale plate 38 provided on the holder 24 shown in FIG.
It is displayed by a pointer 39 fixed to the rear extension. The configuration that can be displayed on the scale plate 38 can be adjusted before installation at the site if the nozzle position and the greasing location are determined, and the adjustment work in a high-temperature atmosphere can be omitted or simplified. The air cylinder 26
In the state where compressed air is not supplied, 40, 40 in FIG.
Are drawn between the shafts 28 and 32 by the tension spring shown in FIG.
0, and when compressed air is supplied, the nozzle ejection direction is changed by an angle α. In addition, at the site where the apparatus of this embodiment was installed, by changing α to about 12 ° and changing the angle, it was possible to change from the state toward the greasing part 21 to the state toward the greasing part 22.

The arm retracting means 13 includes the swing arm 4
2 is provided with an evacuation drive unit so as to rotate to the evacuation position deviating from the rotation locus of the detection body 41. The construction is as shown in FIG.
The cylinder part 66 is fixed to the base 20 and the rod part 6 is fixed.
7 is opposed to a rotation-side portion 71 that is separated from the axis of a portion that rotates integrally with the shaft 45 that fixes the cam 58 and the swing arm 42, and the other end of the rod portion 67. 6
A tension spring 70 is provided between the cylinder 9 and an appropriate portion of the cylinder portion 66. The tension spring 70 is stronger than the tension spring 47. When the compressed air is not supplied to the air cylinder 65, the tension spring 70
7, the tip 68 abuts against the rotating portion 71 and pushes it against the tension spring 47 to rotate the swing arm 42 to the angle θ2 larger than the angle θ1, that is, to the retracted position. The detection unit 41 is moved to ensure that the roller 46 deviates from the turning trajectory of the detection body 41. This state is the arm retreat state. When the compressed air is supplied to the pressure chamber 72 of the air cylinder 65, the rod portion 67 retreats against the tension spring 70 and the tip 68 moves away from the rotating portion 71. At this time, the swing arm 42 returns to the angle θ2 by the tension spring 47,
Further, it returns to the angle θ0 and contacts the stopper 110 and stops.
This state is the arm operation state. When the compressed air in the pressure chamber 72 is removed, the arm retracts due to the action of the tension spring 70. The range between the angles θ0 and θ1 is the arm operation position, and the position moved to θ2 beyond the angle θ1 is the arm retreat position.

When the swing arm 42 swings to the retracted position by the arm retracting means 13, the cam 58 is moved as described above.
Swings in the range of the angle θ0 + θ1.
1, the valve 12 is opened and the nozzle 10
There is a possibility that the oil and fat is injected from the nozzle 10 even though the oil is not directed to the greasing parts 21 and 22. In order to prevent the oil or fat from being sprayed to a portion other than the greasing portion as described above, a device that stops the greasing when the arm is retracted is provided in conjunction with the arm retracting means 13. The greasing stop device includes a grooved cam 74 supported by a shaft 73 on the base 20 side.
A pin 76 provided on a rod portion 67 of both rod air cylinders 65 and engaging with a groove 75 of a grooved cam 74;
A drive unit 77 drives the roller 60 of the one-way lever 69 formed on the grooved cam 74 so that the one-way lever 59 is bent. As a result, when the rod portion 67 moves forward, the pin 76 rotates the grooved cam 74, and the rotation causes the driving portion 77 to bend the one-way lever 59 so that the cam 58 prevents the one-way lever 59 from opening. . In the drawing, portions indicated by 90, 91, and 92 are heat shielding covers formed of a metal plate. According to experiments, the inner part is approximately 200 ° C by this cover.
The air cylinder 65 can be used without any trouble by appropriately selecting a sealing material.

As shown in FIG. 9, for example, the rotary kiln slipper unit lubricating device of the rotary kiln slipper configured as described above includes a pressurized fixed-quantity supplying device 80 for oil and fat, a greasing pump 81, a compressed air source 82, a timer 83, and the like. And a control unit 84 composed of The oil / fat fixed-pressure pressurizing / supplying device 80 is composed of a small cylinder portion and a large cylinder portion which is a driving portion thereof. The small cylinder portion serves as a storage chamber. Is supplied and stored until a predetermined amount is reached, and the large cylinder section is operated by an air pressure signal 89 from the control section 84 to pressurize and send out a predetermined amount of oil and fat in the small cylinder section. . In the figure, reference numeral 86 denotes a greasing line, which is a supply port 51 of the shot valve 12.
87 is an air pipe which is connected to the pressure chamber 72 of both rod cylinders 65 of the arm retreating means 13; 88 is an air pipe which is the nozzle angle changing means 1
4 is connected to the compressed air supply port 33 of the cylinder 29, and 89 is an air conduit connected to the large cylinder portion.

The control unit 84 includes, for example, the greasing pump 8
1 is activated when the pressure on the greasing line 85 side decreases, and the timer 83 is set to greasing once at a predetermined time of the day. The compressed air is supplied and discharged with an appropriate time difference through an electromagnetic valve (not shown) so that the greasing device performs one greasing operation. Immediately before the greasing device performs greasing, the air pressure signal is not sent from the control unit 84, and the rod portions 67 of both rod air cylinders 65 of the arm retreating means 13 are advanced by the action of the spring 70. Therefore, the swing arm 42 is in the retracted position, and the cylinder 26 of the nozzle angle changing means 14 is shortened by the tension spring 40, so that the nozzle 10 is directed to the greasing portion 21 and the fixed pressure supply device 80 Is filled with oils and fats, but is not in a pressurized supply state.

At the greasing time, the greasing operation is performed as follows. Compressed air is sent through air lines 87, 88, 89. As a result, the compressed air is supplied to the pressure chambers 72 of both rod air cylinders 65, so that the rod portion 67 moves backward, and the swing arm 42 swings from the retracted position to the operating position. Further, since the compressed air is supplied to the pressure chamber of the cylinder 26, the cylinder 26 expands and the directing direction of the nozzle 10 is changed from the greasing portion 21 to 22. Further, since the compressed air is supplied to the large cylinder portion of the fixed-pressure pressurizing and supplying device 80, the fixed-pressure pressurizing and supplying device 80 is in a pressurized supply state of the oil and fat to the greasing line 86. This state is a greasing state, in which the detecting means 11 by the detecting body 41 and the swing arm 42 detects the greasing part 22 which goes around according to the rotation of the rotary kiln, and operates the valve 12 during the detecting period. It is opened to inject and supply oil and fat from the nozzle 10. After a predetermined amount of greasing is performed on the greasing portion 22, the compressed air in the air pipe 88 is discharged by the control section 84. As a result, the pressure in the pressure chamber of the cylinder 26 is reduced.
Is changed to the direction in which the greasing portion 21 passes. Therefore, after the greasing to the greasing part 21 is performed and the fixed amount of greasing is performed, the air line 87,
89 compressed air is discharged. As a result, the rod portions 67 of both rod air cylinders 65 move forward and the oscillating arm is in a retracted state, and the air pressure in the large cylinder portion of the fixed-pressure pressurizing and supplying device 80 disappears, and the pressure in the greasing line 85 decreases. The oil supply pump 81 is operated to fill the storage chamber with oil and fat, and one oil supply operation is completed.

According to this device, the swing arm 42 can be retracted from the operating position driven by the detector 41 to the retracted position not driven by the detector 41, and the compressed air is not supplied to both rod air cylinders 65. In this state, since the swing arm 42 is held in the state of swinging to the retreat position, there is no portion that idles when the greasing is not performed. Therefore, even if the greasing device is of a permanent type that is always fixed at a fixed position, unnecessary wear due to idling is eliminated. In addition, since the retracted position is maintained even if the compressed air is not continuously supplied, even if the compressed air source cannot supply the air, the compressed air source does not enter the operating position and does not inject the oil or fat. Further, when the swing arm 42 is swung to the retreat position, a device is provided to stop the lubrication in conjunction with the arm retreat operation, so that the oil is sprayed to a portion other than the greasing portion during the retreat of the arm. Never do. Therefore, there is no need to contaminate the vicinity of the greasing part with fats and oils, and there is no waste of fats and oils. Also,
Since this device can be remotely operated by pneumatic pressure, it can be automatically controlled by an appropriate control unit, and can automate a dangerous greasing operation by hand. In addition, this device is provided with a detector 4
1, the swing arm 42, the cam 58, and the one-handed lever are purely mechanical, so that appropriate timing for opening and closing the shot valve 12 can be obtained. Eliminates the need for electrical wiring and has excellent heat resistance.

However, in the above embodiment, the nozzle 10
Is not moved to the retracted position when the direction of the nozzle 10 is changed, but this is because the lubrication parts 21 and 22 are adjacent to each other and the detecting body 41 is moved while the direction of the nozzle 10 is changed. Is driven, that is, even if the oil or fat is injected during the change, the oil is always supplied to the greasing portion. However, even if the lubrication parts are not adjacent to each other as described above, the swing arm 42 is once retracted to the retracted position, the direction of the nozzle 10 is changed, and then the swing arm 42 is returned to the operating position again. By controlling as described above, it is possible to prevent the oil and fat from being sprayed to portions other than the respective greasing portions.

In the above-described embodiment, the case where the greasing portion covers two places or a relatively wide range has been described. However, when there is only one place or a relatively narrow range, there is no need to provide a nozzle angle changing means. Omitted. In addition, when there are three or more lubrication sites or in a wider range,
Grease can be supplied by operating the cylinders in multiple stages or by using a plurality of cylinders. Furthermore,
The configuration may be such that a large nozzle angle can be changed by using a cylinder with a long stroke.

Although the arm retracting means 13 is provided in the above embodiment, it may be omitted.

[0039]

According to the first and second aspects of the present invention, when the rotary kiln turns in a direction opposite to a predetermined forward direction and the detection object turns in that direction, the safety means stops swinging at a fixed position. This is a configuration for avoiding interference between the moving arm and the rotating detection body. Therefore, for example, when the drive of the rotary kiln is stopped due to a power failure or the like, and the rotary kiln turns in the opposite direction due to its own weight,
This has the effect of preventing the swing arm and, consequently, the rotary kiln slipper unit lubrication device from being damaged. As a result, lubrication can be reliably performed at a predetermined lubrication site, and there is an effect that damage to the rotary kiln can be prevented.

According to the safety means of the second aspect of the present invention, the tip of the swinging arm is pressed by the detecting body and bent in the same direction with respect to the detecting body turning around in the opposite direction. It is possible to avoid mutual interference, and to detect the predetermined lubrication timing by being driven in the same direction (predetermined direction) as the positive direction of the detection object turning around in the positive direction. It is a configuration that can be performed. As described above, by using a purely mechanical configuration for the safety means, a malfunction does not occur due to heat as compared with a configuration having electric means such as an electric motor, and a power source is unnecessary and economical. There is an effect that there is.

[Brief description of the drawings]

FIG. 1 is a partially broken front view of one embodiment of the present invention.

FIGS. 2A and 2B are diagrams corresponding to FIG. 1, wherein FIG. 2A is a partially broken right side view, and FIG.

FIG. 3 is an enlarged front view showing the safety means of the embodiment.

FIG. 4 is an enlarged front view showing a state in which the safety means of the embodiment operates.

5A and 5B show both rod cylinders of the arm retracting means of the embodiment, wherein FIG. 5A is an enlarged plan view, and FIG.

FIG. 6 is an enlarged partial cross-sectional side view of a nozzle portion of FIG.

FIG. 7 is an enlarged partial cutaway front view of a nozzle portion of FIG. 1;

FIG. 8 shows a valve and a one-handed lever of the embodiment;
(A) is an enlarged partial sectional front view, and (b) is a side view corresponding to (a).

FIG. 9 is a block diagram showing a schematic configuration of the shot valve unit of the embodiment and an example of its use.

FIG. 10 is a perspective view showing a conventional rotary kiln slipper unit lubrication device.

FIG. 11 is a schematic cross-sectional view of a rotary kiln to which the embodiment is applied, taken at right angles to an axis, near a tire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary kiln main body (revolving body) 2 Slide block 3 Tire 3a Tire inner peripheral surface 4 Roller 5 Reinforcement rib 10 Nozzle 11 Detecting means 12 Valve 13 Arm retreating means 14 Nozzle angle changing means (Nozzle direction changing means) 21 Greasing part 22 Supply Grease part 26 Air cylinder (fluid pressure cylinder) 40 Tension spring 41 Detector 42 Swing arm 44 Positive turning direction of detector 47 Tension spring (first biasing means) 57 Greasing pipe (greasing passage) 58 Cam 59 One-sided lever 65 Double rod air cylinder (fluid pressure cylinder) 70 Tension spring (Return spring) 80 Quantitative pressure supply device for oil and fat (Pressure greasing source) 85 Greasing pipe line (Grease passage) 110 Stopper (Stopping means) 111 Safety means 112 Connecting shaft 113 Tension spring (second biasing means) 114 Locked part 16 volts 118 backward turning direction of the predetermined direction 120 detector that swings the locking portion 119 roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F27B ⁷ /00-7/42 F16N 7/38

Claims (2)

(57) [Claims] 1. A nozzle directed to a position where a rotating predetermined greasing portion of a rotary kiln slipper portion passes, and a swing arm provided at a fixed position by rotating a detection body provided in the rotary kiln in a predetermined forward direction. Is driven in a predetermined direction to detect a period in which the nozzle faces the greasing portion, and opens a passage between the nozzle and the pressurized lubricating oil source based on the detection of the detecting device. A rotary kiln slipper unit lubricating device comprising: a valve for lubricating the rotary arm; and a detecting unit configured to attach the rocking arm, which is driven by the detecting body in the predetermined direction and rocks, in a direction toward the fixed position. First biasing means for biasing, and the swing arm, which is deviated from the detection body and is biased by the first biasing means and swings in a direction toward the home position, is stopped at the home position. Stopping means for stopping the detection body and safety means for avoiding interference between the detection body and the swing arm when the detection body turns in a direction opposite to the predetermined forward direction. Rotary kiln slipper lubrication unit. 2. The rotary kiln slipper unit lubricating device according to claim 1, wherein the safety means includes a tip end on a side where the swing arm contacts the detection body and a base end on a center position side of the swing. And the tip is pressed by the detector rotating in the opposite direction so that the tip is bent in the pressing direction from a detection position where the tip can abut on the detector, and the detector and the tip are provided. A rotary kiln slipper unit lubricating device, wherein a second urging means is provided for returning the tip end portion separated from the detection body to the detection position so as to avoid interference with the detection body.