JP3564518B2 - Rotary kiln slipper lubrication unit - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a lubricating device for supplying lubrication between a tire inner peripheral surface constituting a slipper portion of a rotary kiln and a shell-side block in contact with the inner peripheral surface.
[0002]
[Prior art]
The body of the rotary kiln is a steel cylinder which can be rotated about its axis and is slightly inclined from the horizontal, lined over the entire length or partially with a refractory. The size of the kiln is, for example, several tens of meters in length and several meters in inner diameter for cement firing. There are three to four support positions in the longitudinal direction. At each of the support positions, as shown in FIG. 10, a slide block 2 is provided on the outer periphery of a shell 1 of the rotary kiln body, and an inner peripheral surface contacts the slide block. A tire 3 is provided, and is supported and rotated by a pair of rollers 4 in contact with the outer peripheral surface of the tire 3. A large number of slide blocks 2 are provided in the circumferential direction with a gap e therebetween, fixed by reinforcing ribs 5 welded to the outer surface of the shell 1, and a surface facing the inner peripheral surface 3 a of the tire 3 and the tire 3. It has a groove-like portion consisting of opposing surfaces near the inner edges of both side surfaces. The tire 3 is a ring having a width of about 1 m and a uniform rectangular cross section in the circumferential direction. The inner diameter of the tire 3 is determined in consideration of thermal expansion. There is some allowance between the surface facing the peripheral surface 3a. In the rotation of the rotary kiln body, a slip occurs between the slide block 2 and the tire 3, and the tire 3 also rotates.
In such a rotary kiln, lubrication with oil is performed between the slide block 2 and the inner peripheral surface 3a of the tire.
[0003]
A conventional technique of this kind is disclosed in Japanese Utility Model Laid-Open No. 2-124492. The schematic configuration is such that a swingable arm is provided on a base near the rotary kiln tire, a lubricating oil injection nozzle and a roller are attached to the tip of the arm, and the roller is provided intermittently on the outer periphery of the rotary kiln shell. The arm is disposed at a position in contact with the (slide block), intermittent swinging movement of the arm caused by rotation of the rotary kiln is detected by a limit switch, and a solenoid valve is operated by a detection signal to inject the lubricating oil. A controller for controlling the timing is provided. Lubricating oil is supplied to the lubricating oil injection nozzle from a pump.
[0004]
[Problems to be solved by the invention]
In the conventional oil supply device, the oil injection nozzle is configured to detect the intermittent swinging movement of the arm with a limit switch, and operate the solenoid valve based on the detection signal to control the injection timing of the lubricating oil. There is no clear idea as to when to inject. Further, since the oil / fat injection nozzle is integrally formed with the protrusion detecting roller, it always moves with the roller. That is, when the roller detects a protrusion, the roller moves according to the outer shape of the protrusion, and the nozzle performs the same movement. For this reason, it is impossible to make the nozzle perform a movement different from the movement of the roller. Therefore, no matter how the injection timing is selected, the trajectory of the position where the nozzle is directed follows the movement of the roller, and thus becomes constant.
For this reason, the conventional greasing device cannot greasing a large area so that there is no fouling due to peripheral fats and oils.
[0005]
However, it is desirable that the oil or fat be supplied to the entire sliding surface. In addition, in the conventional greasing device, one grease spray nozzle is provided on one side, and it is necessary to greasing from both sides for greasing a wide tire, and in that case, greasing the respective nozzles. A greasing unit is needed.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary kiln slipper unit greasing device in which greasing is performed over a wider range.
[0006]
[Means for Solving the Problems]
Means of the first invention is a detecting means for detecting a greasing portion between the slide blocks of the rotary kiln, a first nozzle directed from one side of the tire to the greasing portion, and a grease connected to the first nozzle to remove grease. A rotary kiln slipper unit lubricating apparatus including a supplying pump and a valve provided between the first nozzle and the pump and configured to receive and detect a detection signal of the detecting unit; Providing a three-way valve between the nozzle and the valve, providing a second nozzle directed to the lubrication site between the slide block on the opposite side of the first nozzle from the first nozzle, the second nozzle and the three-way switching valve And the valve side is switched to a first nozzle and a second nozzle.
[0007]
In the means, a check valve having a forward direction from the valve toward the injection port is provided near the injection port between the injection port of the second nozzle and the valve, and the valve opening pressure of the check valve is reduced. It is preferable that the pressure is set slightly lower than the supply pressure supplied from the pump.
[0008]
Means of the second invention is a detecting means for detecting a greasing portion between slide blocks of a rotary kiln, a nozzle directed from the side of a tire to the greasing portion, and a pump connected to the nozzle to supply oil and fat. And a rotary kiln slipper unit lubricating apparatus including a greasing unit including a valve provided between the nozzle and the pump and configured to receive and detect a detection signal of the detection unit, wherein the nozzle injects oil and fat. A nozzle angle changing means for changing a position of the nozzle in the axial direction of the rotary kiln is provided therein.
[0009]
In the means of the second invention, the detection means is a swing arm that is swung by turning of the slide block, and is configured to open and close the valve based on the swing of the swing arm. A configuration in which the nozzle angle changing means supports the nozzle so that the direction of the nozzle can be changed, and is provided with a transmission mechanism connected to the nozzle side for transmitting an acting force for changing the nozzle angle; It is preferable to provide interlocking means for operating the nozzle angle changing means in conjunction with the opening and closing drive of the nozzle.
[0010]
In the means of the second invention, the interlocking means is configured to apply an operating force for opening and closing the valve and changing a nozzle angle by a cam provided on a swing center axis of the swing arm. It is better to do. Two cams may be provided for opening and closing the valve and for changing the nozzle angle, but one cam may be used in common.
[0011]
[Action]
According to the first aspect of the present invention, by switching the three-way valve, it is possible to switch and supply grease from two places of the first nozzle and the second nozzle separately provided on both sides of the tire.
[0012]
Since the first nozzle and the second nozzle are arranged on both sides of the tire, if the first nozzle is arranged at a position close to the valve, the distance between the injection port of the second nozzle and the valve becomes longer. If the piping distance from the valve to the injection port is long, the amount of air that enters the pipe will increase accordingly, so the compressed air will expand even after the valve is closed, and the oil and fat will be pushed out from the nozzle injection port. In addition, since the injection force after the valve is closed gradually decreases, there is a possibility that the fuel may be injected into a portion that does not require greasing, or may drip and stain the surroundings. In order to solve this problem, the configuration in which the check valve is provided near the injection port between the injection port of the second nozzle and the valve, the closing pressure of the valve reduces the supply pressure of the oil and fat in the pipe from the valve to the second nozzle. When the pressure starts dropping, when the pressure becomes slightly lower than the supply pressure in the early stage, the check valve closes to stop the pushing of the oil and fat due to the expansion of the air. Therefore, there is no need to spray or drip into a location that does not require lubrication.
[0013]
In the means of the second invention, the nozzle angle is changed during the nozzle injection, and the spray position of the oil and fat is spread in the axial direction of the rotary kiln, that is, in the width direction of the tire. Grease can be widely used.
[0014]
In the configuration in which the interlocking means for operating the nozzle angle changing means in conjunction with the opening and closing of the valve is provided, the timing of the valve opening and the angle change can be surely matched.
[0015]
Since the structure in which the interlocking means is a cam provided on the swing center shaft of the swing arm is a purely mechanical structure, failures due to heat of the rotary kiln can be reduced as compared with electrical ones.
[0016]
【Example】
An embodiment of the present invention will be described with reference to FIGS. The lubricating apparatus of this embodiment is applied to lubricating a slipper portion of a rotary kiln, and the rotary kiln is for firing cement, and the rotary kiln shown in FIG. 10 (hereinafter sometimes referred to as only kiln). Is a lubricating device for the slipper section. The grease supply device, which is integrally formed as the shot valve unit 15, is disposed near each slipper portion of each support portion that supports the rotation of the long kiln in the middle, and is supported by the following means 16, It is operated at an appropriate time interval. Hereinafter, one shot valve unit 15 and the following means 16 will be described.
[0017]
The shot valve unit 15 includes a first nozzle 10a, a second nozzle 10b, a detecting unit 11, a valve 12, an arm retreating unit 13, and nozzle angle changing units 14a and 14b, as shown in FIGS. The shot valve unit 15 is provided in the follower 16 as shown in FIGS. The first nozzle 10a, the detecting means 11, the valve 12, the arm retracting means 13, and the nozzle angle changing means 14a of the shot valve unit 15 are provided on one of the substrates 20, and the remaining second nozzle 10b, the nozzle angle changing means 14b is provided on the other support column 122.
[0018]
As shown in FIG. 1, the nozzles 10a and 10b are provided with a predetermined lubricating portion (the outer peripheral surface of the shell 1 between the slide blocks 2 and the inner peripheral surface of the tire) of the rotary kiln slipper, as shown in FIG. The tire 3 is directed from both sides of the tire 3 to a position where a gap 21 with the surface 3a passes, and can be lubricated to another lubrication site (tire side surface between the slide blocks 2 and 2) 22. Nozzle angle changing means 14a and 14b are provided so that the angle can be changed by a fixed angle α set within an angle range of about 20 °. The nozzle 10a has a simple injection hole, whereas the nozzle 10b has a check valve inside. As shown in FIG. 4, the nozzle 10a has a main body 31, a check valve 32, a valve opening pressure setting spring 33, and a base having an injection hole 34 connected to a nozzle base 23 following a greasing pipe 57b described later. 35. In the figure, reference numeral 36 denotes a notch forming an oil passage. The valve opening pressure setting spring 33 is set to a value slightly smaller than the greasing pressure supplied via the valve 12. When the distance from the valve 12 becomes long, it is preferable to use the nozzle 10a provided with the above-mentioned check valve inside.
[0019]
Since the nozzle angle changing units 14a and 14b have the same configuration, only the nozzle angle changing unit 14a will be described, and the description of the nozzle angle changing unit 14b will be omitted. The nozzle 10a is bent 90 ° in the middle, and as shown in FIG. 2, is rotatably connected to a nozzle base 23 fixed at a fixed position on the side of the base 20, and extends slightly from the connection position to an axis. On the other hand, it is bent 90 ° and opened. The bent and extended distal end is supported by a holder 24 attached to the base 23 via an air cylinder 26. In FIG. 2, the tip is backward and slightly upward, and the injection direction of the nozzle 10a is set to the axis of the base 23. The air cylinder 26 is configured so as to be changeable, and the change is performed by the air cylinder 26.
[0020]
When the air cylinder 26 expands and contracts, the nozzle 10a rotates around the axis of the nozzle base 23 by an angle α (see FIG. 1). Although a detailed description is omitted, an air cylinder that can adjust the stroke is used as the air cylinder 26, and the angle α can be changed and adjusted by changing the stroke. When the compressed air is not supplied, the air cylinder 26 is in a shortened state by a tension spring indicated by 40 in FIG. 2, and the ejection direction of the nozzle 10a is the direction of the arrow 30a (the ejection direction of the nozzle 10b is the arrow 30b). When compressed air is supplied, the nozzle ejection direction is changed by the 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 nozzle angle changing means 14b having the same configuration as the nozzle angle changing means 14a and the nozzle 10b are attached to a support 122, and the support 122 is fixedly supported by a right-hand follow-up portion 112b of the follow-up means 16 described later.
[0021]
The detecting means 11 is configured to detect a period in which the nozzle 10 faces the greasing parts 21 and 22, and to apply a force to open the valve to the valve 12 during the detecting period. As shown in FIG. 2 and FIG. 3, it is configured by a detection body 41, a swing arm 42, an opening / closing drive unit 43, and the like.
The detection body 41 is provided at the outer end with respect to the kiln center with respect to the rear side in the kiln rotation direction (indicated by an arrow 44) of two reinforcing ribs 5 provided on each of the slide blocks 2 of the kiln. The round rods are welded so that they are parallel to each other. The position of each of the detectors 41 is the portion of the slide block 2 that is the most outwardly located with respect to the kiln center axis, and the tip protrudes to the side opposite to the tire 3. Each detector 41 is rotated at the same distance from the kiln center axis so that each detector 41 rotates together with the rotation of the kiln so as to draw the same rotation trajectory. The same applies to the distance f (see FIG. 1).
[0022]
As shown in FIGS. 2 and 3, the swing arm 42 has a base end pivotally supported by a shaft 45 on the base 20 and has a roller 46 at a tip end. The swing arm 42 supported by the base 20 is located within the rotation trajectory of the detection body 41 in which the roller 46 at the tip rotates, and swings to one side to contact the stopper (in FIG. (The position shown) by the tension spring 47. The swing arm 42 is driven by the detection body 41 by the rotation of the kiln and swings the angle θ0 and θ1 about the axis 45, and when it comes out of the trajectory of the detection body 11, the swing arm 42 hits the stopper by the action of the tension spring 47. Return to the initial contact position. While the swing arm 42 is swinging by the angle θ1, the nozzle 10 is surely opposed to the greasing portion 21.
[0023]
The valve 12 is a shot valve, which is a poppet type, has a supply port 51 and a supply port 52 for oil and fat in a valve body, and a driven part 55 projects to the outer surface of the main body, and the driven part 55 is pressed. As a result, the poppet valve element is driven to open the valve. When the pressing force of the driven portion 55 is released, the protrusion returns to the original projected state by the built-in return spring. The valve 12 is fixed to the base 20, and the outlet 52 is connected to the nozzles 10a and 10b via a greasing line 57, a three-way switching valve 56, and greasing lines 57a and 57b. Although not shown in detail, the three-way switching valve 56 drives the switching lever by an air cylinder 54 (see FIG. 3), and supplies compressed air to the air cylinder 54 to supply a greasing line. 57 is connected to the greasing line 57b, and exhausting connects the greasing line 57 to the greasing line 57a.
[0024]
The opening / closing drive section 43 is provided for the swing arm 42 and the driven section 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-shaped bent shape, has a roller 60 at its tip in contact with the cam 58, and has a base pivotally supported by a shaft 61 provided on the valve body, and has a bent portion of about 90 degrees. The joint is articulated by a shaft so as to be able to bend at a further smaller angle, for example, about 45 ° from the state described above, and a spring (not shown) is interposed to return to the state of 90 °. 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.
[0025]
When the swing arm 42 swings by the angle θ0 from the initial position, the cam 58 also rotates by the angle θ0, and drives the roller 60 near the end of the rotation to swing the one-handed lever 59. Then, the driven part 55 is pressed, and the shot valve 12 is opened. The position of the swing arm 42 (the position indicated by the solid line in FIG. 1) is defined as a valve opening position. Next, when the swing arm 42 reaches a position further rotated by an angle slightly smaller than the 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 θ <b> 1 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. However, 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 the bent portion is such that the shot valve 12 does not open when the cam 36 rotates back.
[0026]
The arm retracting means 13 is provided with a retracting drive unit such that the swing arm 42 rotates to a retracted position deviating from the rotation locus of the detection body 41. As shown in FIGS. 2 and 3, the configuration is such that the cylinder portions 66 of both rod air cylinders 65 are fixed to the base 20, and one end 68 of the rod portions 67 is fixed to the cam 58 and the swing arm 42. A tension spring 70 is provided between the other end 69 of the rod portion 67 and a proper position of the cylinder portion 66 so as to face a rotation side portion 71 that is separated from the axis of a portion that rotates integrally with the shaft 45. is there. The tension spring 70 is stronger than the tension spring 47. When the compressed air is not supplied to the air cylinder 65, the rod portion 67 advances by the tension spring 70, and the tip 68 abuts the rotating portion 71 and pushes this against the tension spring 47, and the swing arm 42. Is rotated to the angle θ2 larger than the angle θ1, that is, to the retracted position, so that the roller 46 can surely deviate 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, returns to the angle θ0, abuts against the stopper, and stops. 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.
[0027]
When the swing arm 42 swings to the retreat position by the arm retreating means 13, the cam 58 also rotates as described above, so that the swing in the range of the angle θ0 + θ1 requires the valve 12 to swing like the swing by the detector 41. There is a possibility that the fat or oil is sprayed from the nozzle 12 even when the nozzle 10 is opened and the nozzle 10 is not directed to the greasing parts 21 and 22. In order to prevent oil and fat from being sprayed to a portion other than the greasing portion in this manner, a device is provided which interlocks with the arm retracting means 13 and stops greasing when the arm is retracted. As shown in FIG. 2, the greasing stop device includes a grooved cam 74 supported by a shaft 73 on the base 20 side and a groove 75 of the grooved cam 74 provided on the rod portions 67 of both rod air cylinders 65. It comprises an engaging pin 76 and a drive unit 77 that drives the roller 60 of the one-way lever 59 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 drawings, portions indicated by 90, 91, and 92 are heat shielding covers formed of a metal plate.
[0028]
The rotary kiln expands and contracts in the axial direction, for example, due to a temperature change during operation (at the time of hot) and at the time of stop (at the time of cold). At this time, the greasing portion also moves in the expansion and contraction direction of the rotary kiln. For this purpose, follow-up means 16 is provided. As shown in FIG. 1, the follower 16 comprises a shaft 111 as a guide, left and right followers 112a and 112b, and left and right rollers 113a and 113b.
[0029]
Two shafts 111 are provided in parallel with each other. The two shafts 111 are parallel to the axial direction (left and right directions in FIG. 1) of the shell 1 of the rotary kiln main body, and are located below the shell 1. It is supported by a support post 114 and fixed to a floor surface 115. The two shafts 111 are provided with left follow-up portions 112a and 112b. The left side of the shell 1 shown in FIG. 1 is the upstream side of the kiln, and the right side is the downstream side.
[0030]
As shown in FIG. 1, each of the left and right follow-up portions 112a and 112b is provided with two through-holes 116, and a shaft 111 is inserted into each of the through-holes 116. Is movable along. The left follower 112a is arranged on the left side of the tire 3, and the right follower 112b is arranged on the right of the tire 3. The left and right followers 112a, 112b are connected to each other via a connecting body, for example, a connecting plate 117. The left follower 112a is provided with a first nozzle 10a, a detecting means 11, a valve 12, an arm retracting means 13, and a nozzle angle changing means 14a, which are most of the shot valve unit 15 supported by the base 20 described above. The right follower 112b is provided with a second nozzle 10b supported by a support column 122 and a nozzle angle changing means 14b. Therefore, the valve unit 15 having the first and second nozzles 10a and 10b can always move right and left in FIG. 1 along the two shafts 111 integrally with the follower 112. In addition, 119 shown in FIG. 1 is a dustproof cover.
[0031]
As shown in FIG. 1, a left roller 113 a and a right roller 113 b are provided. The left roller 113 a is rotatably provided at an upper end of a left roller shaft 120 a with a predetermined gap from a left side surface of the tire 3. is there. The left roller shaft 120 a is provided fixed to the upper surface of the connecting plate 117 in a state parallel to the left side surface of the tire 3 and toward the central axis of the shell 1. The right roller 113b is rotatably provided at the upper end of the right roller shaft 120b with a predetermined gap from the right side surface of the tire 3. The right roller shaft 120b is fixed to the upper surface of the connecting plate 117 so as to be parallel to the right side surface of the tire 3 and toward the central axis of the shell 1. The left and right rollers 113a and 113b are provided with a predetermined gap from each corresponding side surface of the tire 3 because of the run-out of the tire 3, the rollers 113a and 113b, and the follower 112a having the rollers 113a and 113b, This is to prevent the tire 112b and the like from moving left and right each time the tire 3 makes one rotation so as not to swing. When the tire 3 moves, for example, rightward (or leftward) in FIG. 1 by extending (or shortening) the shell 1 of the rotary kiln in the axial direction, the right side surface (or left side surface) of the tire 3 becomes the right roller 113b (or The followers 112a and 112b are moved by contacting the left roller 113a).
[0032]
The rotary kiln slipper unit lubricating device configured as described above, for example, as shown in FIG. 3, includes a control system including a pressurized quantitative supply device 80 for oil and fat, a greasing pump 81, a compressed air source 82, a timer 83, and the like. A portion 84 is provided and used. In the drawing, reference numeral 85 denotes an air pipe which is connected to the air cylinder 54 of the three-way switching valve 56, and reference numeral 86a denotes a greasing pipe connecting the greasing pump 81 and the pressurized and fixed oil supply device 80 for grease. Reference numeral 86b denotes a grease supply line connecting the pressurized and fixed amount supply device 80 for oil and fat to the supply port 51 of the shot valve 12. Reference numeral 87 denotes an air line, which is a pressure of both rod cylinders 65 of the arm retreating means 13. An air line 88 is connected to the compressed air supply port of the cylinder 26 of the nozzle angle changing means 14a, 14b, and an air line 89 is a pressurized fixed amount supply of oil and fat. It is connected to the device 80.
[0033]
The control unit 84 is configured such that, for example, the greasing pump 81 operates when the pressure on the greasing pipe line 86a side decreases, and the timer 83 is set to greasing once at a predetermined time of day. At that time, the compressed air from the compressed air source 82 is supplied and discharged with an appropriate time difference via an electromagnetic valve (not shown), and the greasing device performs one greasing operation.
[0034]
At the greasing time, the greasing operation is performed as follows. Compressed air is sent through air lines 85, 87, 88, 89. As a result, the three-way switching valve 56 performs a switching operation to connect the greasing line 57 to the 57b, the compressed air is supplied to the pressure chambers 72 of both rod air cylinders 65, the rod portion 67 retreats, and the swing arm 42 Swings from the retracted position to the operating position. Further, since compressed air is supplied to the pressure chamber of the cylinder 26, the respective cylinders 26 of the nozzle angle changing means 14a, 14b extend and the direction of the nozzles 10a, 10b is directed from the greasing portion 21 to 22, respectively. Be changed. Further, since the compressed air is supplied to the fixed-quantity pressurizing and supplying device 80, the fixed-quantity pressurizing and supplying device 80 is in a state of pressurizing and supplying oil and fat to the greasing line 86b. This state is a greasing state for the greasing portion 22. The detecting means 11 by the detecting body 41 and the swing arm 42 detects the greasing portion 22 that is encircled by the rotation of the rotary kiln, and the detection is performed. During the period, the valve 12 is opened to inject and supply oil and fat from the nozzle 10a. After a predetermined amount of greasing is performed from the right side of the tire 3 in FIG. 1 to the greasing portion 22, the compressed air in the air line 85 is discharged by the control unit 84, whereby the three-way switching valve 56 is switched. Since the greasing line 57 is connected to 57a, the grease is injected and supplied from the nozzle 10a. The injection supply from the nozzle 10a is a greasing from the left side of the tire 3 in FIG.
[0035]
After a predetermined amount of greasing from the left side of the tire 3 in FIG. 1 to the greasing portion 22 is performed, compressed air is supplied again by the control unit 84 via the air pipe 85, and the three-way switching valve 56 is supplied. The oil pipe 57 is connected to 57b, and at the same time, the compressed air in the air pipe 88 is discharged. Since the pressure in the pressure chamber of the cylinder 26 is reduced by the exhaust of the air line 88, the cylinder 26 of the nozzle angle changing means 14a, 14b is shortened by the action of the tension spring 40 to supply the directional directions of the nozzles 10a, 10b. It changes so that it may go to the direction (arrow 30a, 30b) which the fat part 21 passes. Therefore, subsequently, the greasing to the greasing portion 21 is first performed from the nozzle 10b, and after a predetermined amount of greasing is performed, the compressed air in the air line 85 is discharged by the control unit 84, and the three-way is performed in the same manner as described above. Since the switching valve 56 is switched and the greasing line 57 is connected to 57a, the oil is injected and supplied from the nozzle 10a. After a predetermined amount of greasing is performed, the compressed air in the air pipes 87 and 89 is discharged. As a result, the rod portions 67 of both rod air cylinders 65 move forward and the swing arm is in a retracted state, and the air pressure of the constant-pressure pressurizing supply device 80 disappears, and the pressure of the greasing line 85 decreases. Is operated to fill the storage chamber with oil and fat, and one greasing operation is completed.
[0036]
In the device of this embodiment, the greasing is performed by the nozzles 10a and 10b provided on both sides of the tire 3, so that even if the tire 3 is wide, the greasing portion can be reliably lubricated. In this case, even if the greasing line 57b is long, since the check valve 32 is provided, the injection and dripping from the nozzle 10b due to the expansion of the internal air after the supply of the oil to the nozzle 10b is stopped can be prevented. . Therefore, oil and fat can be supplied from one shot valve to two nozzles.
Further, in the apparatus of this embodiment, since the shot valve unit 15 follows the expansion and contraction of the kiln body 1 by the following means 16, the relative positions of the nozzles 10a and 10b and the predetermined positions through which the greasing parts 21 and 22 pass are provided. There is no displacement, and therefore, continuous operation can be performed with the nozzle angle adjusted at the time of installation, and there is no need to adjust the nozzle angle displacement due to the expansion and contraction of the kiln.
Further, in the device of this embodiment, the swing arm 42 can be retracted from the operating position driven by the detection body 41 to the retracted position not driven by the detection body 41, and the compressed air is supplied to both rod air cylinders 65. In the absence state, the swing arm 42 is held in the state of swinging to the retreat position, so that there is no portion that idles when the greasing is not performed. Therefore, even if the greasing device is of a permanent type provided on a specific kiln support portion, unnecessary wear due to idling is eliminated. In addition, since the retracted position is maintained even if the supply of compressed air is not continued, even if the compressed air source cannot supply air, the compressed air source does not enter the operating position and does not inject oil or fat.
Further, since the direction of the nozzles 10a and 10b can be changed, it is possible to supply grease to the tire inner peripheral surface side and both side surfaces of the rotary kiln with one greasing device.
In addition, 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. I can't. Therefore, there is no need to contaminate the vicinity of the greasing portion with fats and oils, and there is no waste of fats and oils.
In addition, 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 a purely mechanical device that can obtain appropriate timing for opening and closing the shot valve 12 with the detection body 41, the swing arm 42, the cam 58, and the one-handed lever. It does not use any components, does not require electrical wiring, and has excellent heat resistance.
[0037]
A second embodiment will be described with reference to FIGS. In this embodiment, the nozzle angle changing means 14a of the first nozzle 10a of the first embodiment is different, and mainly the different points will be described, and the same parts will be denoted by the same reference numerals and description thereof will be omitted. .
[0038]
The nozzle angle changing means 130 of this embodiment changes the nozzle angle by the rotational force when the swing arm 42 of the detection means 11 described in the first embodiment is swung by the detection body 41 to open and close the shot valve 12. In this case, the oil and fat are injected and supplied over a wide range by changing the injection direction of the nozzle during the injection by the nozzle.
[0039]
The nozzle angle changing means 130 includes a protruding shaft 131 formed by extending and protruding the pivot of the bent portion of the one-handed lever 59 driven by the cam 58 provided on the swing arm 42, and a rotating member driven by the shaft 131. 132, a connecting rod 133 for transmitting the movement of the rotating member 132, a driven part 135 for rotating the nozzle extending from the main body 134 of the nozzle 10a and connected to the connecting rod 133, and the like. The protruding shaft 131, the rotating member 132, and the connecting rod 133 are a transmission mechanism that transmits the driving action of the cam 58 to the driven portion 135. As shown in FIGS. 6 and 7, the rotating member 132 has a bell crank shape and is rotatably supported on the main body of both rod air cylinders 65 by a shaft 136. The protruding shaft 131 is opposed to the protruding shaft 131 so as to be driven by the movement when the valve is opened, and the other end is connected to the lower end of the connecting rod 133 via a spherical bearing 137. Note that the swing arm 42 in this embodiment is different from the first embodiment in that the mounting position with respect to the shaft 45 is provided at the shaft end opposite to that in the first embodiment. This is done in order to prevent the nozzle 10a from interfering with the detector 41 because the nozzle 10a is provided close to the surface side of the shell 1 of the kiln as shown in FIG.
[0040]
The main body portion 134 of the nozzle 10a has a passage 138 for oils and fats inside, and is formed in a curved tube with a 90 ° bend in the middle, and the base end is rotatably connected to the greasing line 57a via a connection portion 139 and supported. In addition, the other end extends upward and has a jet port 140 at one end in a direction perpendicular to the bent surface of the bent portion. The driven portion 135 for rotation of the main body portion 134 is formed to extend from near the bent portion in a direction substantially opposite to the ejection direction of the nozzle 10a. The upper end of the connecting rod 133 is connected to the tip of the driven part 135 via a spherical bearing 141. In FIGS. 6 and 7, reference numeral 142 denotes a tension spring, which is a return spring for returning the nozzle to its original position after being driven to change the nozzle angle.
[0041]
As shown in FIG. 5, the upper end of the nozzle 10 a is close to the surface of the shell 1 of the kiln body, and the directing direction is the direction toward the greasing portion 22 but directly toward the inner surface 3 a of the tire 3. When the nozzle angle changing means 130 is not operating, the nozzle 10a is directed toward the back of the greasing part 21 as indicated by an arrow 125, and the nozzle angle changing means 130 operates to change the angle. As shown by the arrow 126, it is toward the near side of the greasing part. The direction indicated by the arrow 125 of the nozzle 10a is determined so that no oil or fat flows on the opposite side when the oil or fat is injected and supplied. Further, the nozzle angle changing means 130 is driven by the swing of the swing arm 42 provided only on the side of the base 20 provided with the nozzle 10a, and is not provided on the other nozzle 10b. The nozzle 10b provided on the opposite side to the tire 3 is exactly the same as that in the first embodiment. Since the angle is changed by the nozzle angle changing means 14b using the air cylinder 26, the air pipe 88 shown in FIG. 9 is connected only to the air cylinder 26 of the nozzle angle changing means 14b.
[0042]
The difference from the first embodiment is that the valve opening characteristics of the shot valve 12 and the shape of the cam 58 are slightly different. The valve 12 is opened at the beginning of the entire stroke of the driven portion 55, and the driven portion 55 is pushed in after the valve is opened. The cam 58 has a shape in which the outer peripheral surface slightly increases in radius in the rotation direction at the time of valve-opening drive. With this configuration, even when the driven part 55 is gradually pushed in with the rotation when the cam 58 drives the one-handed lever 59, the valve is opened at the initial stage, and the rotating member 132 is gradually rotated to rotate the nozzle 10a. Gradually change the directional angle.
[0043]
For example, as shown in FIG. 9, the rotary kiln slipper unit lubricating device configured as described above includes a pressurized and fixed oil supplying device 80, a greasing pump 81, and a compressed air A source 82 and a control unit 84 including a timer 83 and the like are provided and used. In the drawing, reference numeral 85 denotes an air pipe which is connected to the air cylinder 54 of the three-way switching valve 56, and reference numeral 86a denotes a greasing pipe connecting the greasing pump 81 and the pressurized and fixed oil supply device 80 for grease. Reference numeral 86b denotes a grease supply line connecting the pressurized and fixed amount supply device 80 for oil and fat to the supply port 51 of the shot valve 12. Reference numeral 87 denotes an air line, which is a pressure of both rod cylinders 65 of the arm retreating means 13. An air line 88 is connected to the compressed air supply port of the cylinder 26 of the nozzle angle changing means 14b, and an air line 89 is a pressurized and fixed supply device 80 for oil and fat. Connected to
[0044]
At the greasing time, for example, a greasing operation is performed as follows. Compressed air is sent through air lines 85, 87, 88, 89. As a result, the three-way switching valve 56 performs a switching operation to connect the greasing line 57 to the 57b, the compressed air is supplied to the pressure chambers 72 of both rod air cylinders 65, the rod portion 67 retreats, and the swing arm 42 Swings from the retracted position to the operating position. In addition, since the compressed air is supplied to the pressure chamber of the cylinder 26, the cylinder 26 of the nozzle angle changing means 14b performs the extending operation, and the directing direction of the nozzle 10b is changed from the greasing portion 21 to 22. Further, since the compressed air is supplied to the fixed-quantity pressurizing and supplying device 80, the fixed-quantity pressurizing and supplying device 80 is in a state of pressurizing and supplying oil and fat to the greasing line 86b. In this state, the nozzle 10a side is a greasing state with respect to the greasing part 21, the nozzle 10b side is a greasing state with respect to the greasing part 22, and the greasing part 22 circulates with the rotation of the rotary kiln. This is detected by the detection means 11 including the detection body 41 and the swing arm 42, and during the detection period, the valve 12 is opened to inject and supply oil and fat from the nozzle 10b. After a predetermined amount of greasing is performed from the right side (not shown in the figure) of the tire 3 in FIG. 6 to the greasing portion 22, the compressed air in the air line 88 is discharged by the control unit 84, and thereby the nozzle The pointing direction of 10b is changed from the greasing portion 22 to 21. Then, after a predetermined amount of greasing is performed from the right side to the greasing portion 21, the compressed air in the air line 85 is discharged by the control unit 84, whereby the three-way switching valve 56 is switched to connect the greasing line 57. Since it is connected to 57a, oil and fat is injected and supplied from nozzle 10a.
[0045]
The injection supply from the nozzle 10a is a lubrication from the left side of the tire 3 in FIG. 6, and the angle of the nozzle 10a is changed during the injection of the fat. In other words, when the shot valve 12 is opened by being driven by the cam 58 and the one-way lever 59 by the swing of (θ0 + θ1) of the swing arm 42 that has detected the greasing portion, the nozzle angle changing means 14a of the nozzle 10a is simultaneously opened. Driven by the protruding shaft 131 of the one-handed lever 59, the driven part 135 is driven via the rotating member 132 and the connecting rod 133, and the direction of the nozzle 10a is changed from the direction of arrow 125 to the direction of arrow 126. More specifically, the nozzle angle starts changing after the shot valve 12 is opened, and is directed in the direction of arrow 126 when the shot valve 12 is closed. Therefore, the shape of the cam 58 is such that the driven portion 55 is continuously pushed in even after the shot valve 12 is opened. When the swing arm 42 comes off from the detection body 41 and returns, the one-handed lever 59 is released from the driving force, so that the valve 12 is closed and the direction of the nozzle 14a is in the direction of the arrow 25. Have returned. This operation is repeated to end the predetermined amount of lubrication.
[0046]
After the predetermined amount of greasing is performed, the compressed air in the air pipes 87 and 89 is discharged by the control unit 84. As a result, the rod portions 67 of both rod air cylinders 65 move forward and the swing arm is in a retracted state, and the air pressure of the constant-pressure pressurizing supply device 80 disappears, and the pressure of the greasing line 85 decreases. Is operated to fill the storage chamber with oil and fat, and one greasing operation is completed.
[0047]
In the second embodiment, the angle range in which the nozzle 10a is changed may be widened to include the greasing portion 22. Thereby, lubrication of the inner surface 3a and both side surfaces of the tire 3 becomes possible.
In the second embodiment, the nozzle 10b may be an angle-fixed injection nozzle having no angle changing means and directed toward the greasing portion 21. This is a configuration in which only lubrication to the inner surface 3a of the tire is performed from both sides.
In addition, since the nozzle 10a in the second embodiment can change the nozzle angle during spraying and can supply grease in a wide range, the tire 3 having a relatively narrow width can supply necessary grease only from one side. In such a case, the nozzle 10b and the angle changing means 14b may be omitted.
In the first and second embodiments, the three-way switching valve 56 is switched by the air cylinder 54. However, if the control unit 84 is simplified or manually controlled, the three-way switching valve 56 is switched. May be manually operated.
In short, it is preferable to select and adopt as appropriate according to the situation of the grease supply site.
[0048]
In the second embodiment, the interlocking mechanism in which the rotating member 132 is driven by the cam 58 via the one-way lever 59 and the protruding shaft 131 has been described. However, another cam may be provided on the shaft 45 in some cases. The rotating member 132 may be driven. In this case, the valve 12 and the angle changing means 130 can be driven separately, so that preferable operations can be performed respectively.
[0049]
The device of the second embodiment has substantially the same effects as the device of the first embodiment. Since the nozzle angle changing means 130 can change the nozzle angle during the injection of the oil and fat to supply the oil in a wide range, one nozzle can cope with the entire width of the inner surface of one tire. .
[0050]
【The invention's effect】
According to the first aspect of the present invention, the three-way switching valve is switched so that the greasing can be performed from one greasing portion by the first nozzle on one side and the second nozzle on the other side of the tire. A device that can grease can be formed in one unit, and one grease supply unit can supply grease to the tire inner surface of a wide tire. In addition, since one valve (shot valve), the detecting unit, and the greasing unit can be shared by the first nozzle and the second nozzle, the cost of the apparatus can be reduced. In addition, Since it is no longer sprayed or dripped on a portion that does not require grease, contamination of the periphery with grease can be prevented.
[0051]
Claim 2 According to the invention described in the above, since the spraying position of the oil and fat spreads in the width direction of the tire, it becomes possible to supply more oil to the surface requiring oiling. Grease can be supplied to the entire width of the tire inner surface.
Claim 3 According to the invention described in (1), the timing of opening the valve and the timing of changing the angle can be surely matched.
Claim 4 According to the invention described in (1), since failure due to heat is small, durability is excellent.
[Brief description of the drawings]
FIG. 1 is a partially omitted front view showing a schematic configuration of a first embodiment of the present invention.
FIG. 2 is an enlarged side view of a main part of the embodiment.
FIG. 3 is a block diagram showing a schematic configuration of a shot valve unit of the embodiment and an example of its use.
FIG. 4A is an enlarged longitudinal sectional view of a nozzle portion of the embodiment, and FIG. 4B is a sectional view taken along line AA of FIG.
FIG. 5 is a partially omitted front view showing a schematic configuration of a second embodiment of the present invention.
FIG. 6 is an enlarged side view of a main part of the embodiment.
FIG. 7 is an enlarged view of a main part of FIG. 6;
FIG. 8 is a front view corresponding to FIG. 7;
FIG. 9 is a block diagram showing a schematic configuration of a portion of the shot valve unit of the embodiment in which the nozzle 10b side is omitted and an example of its use.
FIG. 10 is a schematic cross-sectional view of a rotary kiln to which the first and second embodiments of the present invention are applied, taken at right angles to an axis, near a tire;
[Explanation of symbols]
1 Rotary kiln body
2 slide blocks
3 tires
3a Tire inner circumference
4 rollers
5 Reinforcement rib
10a nozzle
10b nozzle
11 Detecting means
12 valve (shot valve)
13 Arm retraction means
14a Nozzle angle changing means
14b nozzle angle changing means
16 Tracking means
20 Substrate
21 Greasing area (tire inner surface)
22 Greasing part (tire side)
26 Air cylinder
32 check valve
33 Valve opening pressure setting spring
41 Detector
42 Swing arm
47 Tension spring
56 Three-way switching valve
57 Greasing pipeline (greasing passage)
58 cams
59
81 Greasing pump
130 Nozzle angle changing means
131 Projection axis
132 Rotating member
133 connecting rod

Claims (4)

Detecting means for detecting a greasing portion between the slide blocks of the rotary kiln; a first nozzle directed from one side of the tire to the greasing portion; a pump connected to the first nozzle to supply grease; In a rotary kiln slipper unit lubricating apparatus including a greasing unit including a valve provided between a nozzle and the pump and configured to receive and detect a detection signal of the detection unit, Providing a three-way switching valve , providing a second nozzle directed to a lubrication site between the slide block on the side opposite to the first nozzle with respect to the tire, connecting a second nozzle to the three-way switching valve, the configured to switch connected to the first nozzle and the second nozzle, the direction from the valve into the injection port of the injection port side of the between the second nozzle of the injection port valve and forward That it is provided with the check valve, a rotary kiln slipper portion lubricator and wherein the valve opening pressure of the check valve is set slightly lower than the supply pressure supplied from the pump. Detecting means for detecting a greasing portion between the slide blocks of the rotary kiln, a nozzle directed from the side of the tire to the greasing portion, a pump connected to the nozzle to supply grease, and a nozzle and the pump A rotary kiln slipper unit lubricating apparatus including a greasing unit including a valve provided between the nozzle and the valve for receiving and detecting the detection signal of the detection unit, wherein the nozzle is directed during a period in which the nozzle injects oil and fat. A rotary kiln slipper unit lubrication device, comprising a nozzle angle changing unit for changing a position along an axial direction of the rotary kiln. 3. The rotary kiln slipper greasing device according to claim 2, wherein the detecting unit is a swing arm that is swung by turning the slide block, and opens and closes the valve based on the swing of the swing arm. The nozzle angle changing means is configured to be driven, and the nozzle angle changing means supports the nozzle so that the direction of the nozzle can be changed, and is provided with a transmission mechanism that is connected to the nozzle side and transmits an acting force for changing the nozzle angle. A rotary kiln slipper unit greasing device, wherein the interlocking means operates the nozzle angle changing means in conjunction with the opening and closing drive of the valve. 4. The rotary kiln slipper greasing device according to claim 3, wherein the interlocking means applies an operating force for opening and closing the valve and changing a nozzle angle by a cam provided on a swing center axis of the swing arm. A rotary kiln slipper unit lubrication device, characterized in that:

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