JP2001181640A - Oven lid detaching equipment for coke oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve such a problem that two coke oven moving machines are required in detaching an oven lid in a coke oven having a new and an old oven lids. SOLUTION: This oven lid detaching equipment for coke oven is provided with a bar pressing cylinder 19 set as stretchable in back and forth on the position corresponding to bars 2, 11 of an old and a new lid, a hook 20 for taking up oven lid capable of engaging to oven lid lifting shafts 8, 11 for the old and new lids, a lifting cylinder 21 for vertically driving the bar pressing cylinder 19 and the oven lid taking up hook 20 along a machine axis 15a, a pressing force switching mean switching the pressing force of the bar pressing cylinder 19 to a high pressure operation and a low pressure operation and a pressure stroke switching mean capable of changing the pressure stroke of the bar pressing cylinder 19. Thus, single coke oven moving machine can detach and attach all the oven lids of a coke oven to which new and old oven lids are mixedly attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coke oven removal device for use in a coke oven moving machine (coke oven guide car, extruder, etc.).

[0002]

2. Description of the Related Art Conventionally, coke ovens have been changed from an old type to a new type in order to prevent pollution of the coke oven and prevent gas leakage. The method for setting the furnace lid on the furnace frame and the method for removing the furnace lid differ from each other due to the structural difference of the furnace lid, and the pressing force of the furnace lid against the furnace frame at the time of removal differs between the new method and the old method.

For example, as shown in FIG. 10, the furnace lid 1 of the old type is a so-called bedal type having a bar-pressing pedal 7 for removing the bar 2 from the bar bar provided on the furnace side. 1 is removed by using a furnace lid attaching / detaching machine 27 having a pressing arm 26 having a roller 25 at the tip, and rotating the pressing arm 26 in the direction of the bar-tacking pedal 7 to retract the pedal 7. Therefore, it is necessary to retract the bar 2 against the urging force of the spring 4 and release the engagement with the bar bar receiver on the furnace side. On the other hand, as shown in FIG. 5, the furnace lid 10 of the new type is a so-called direct-push type which does not have the pedal 7 but directly presses the bar 11 with a pressing cylinder.
Can not be removed by the furnace lid detacher 27, so that it has to be performed by another furnace lid detacher equipped with a direct pressing cylinder.

[0004]

By the way, conventionally,
In order to replace all furnace lids in a coke oven where both new and old furnace lids are mixed, a coke oven moving machine equipped with an old furnace lid detacher and a coke oven equipped with a new We needed to operate two furnace movers,
Operating two mobile units in one coke oven is extremely inefficient and has a problem in terms of safety.

[0005] The present invention, in order to solve the above-mentioned problems, provides a furnace lid attaching / detaching apparatus capable of attaching and detaching any of the old and new furnace lids. This enables the entire coke oven to be attached and detached by the mobile unit.

[0006]

To achieve the above object, the present invention firstly comprises disposing a furnace lid detacher on the front side of a furnace lid to be detached, and detaching the furnace lid with the detacher. In a furnace cover removing device for a coke oven, a bar pressing cylinder opposite to a bar of the furnace cover and a shaft for lifting a furnace cover of the furnace cover can be engaged with a shaft of the remover. A hook is provided, and the cylinder for bar press and the hook for removing the furnace lid are configured to be vertically slidable along the machine axis of the furnace lid detacher, and these cylinders and hooks are driven vertically along the machine axis. A lifting cylinder, a pressing force switching means for switching the pressing force of the bar pressing cylinder between a high pressure operation and a low pressure operation, and a stroke switching means for changing a pressing stroke of the bar pressing cylinder. Features It is formed using the coke oven of the furnace lid desorption apparatus.

Therefore, for example, even when two kinds of old and new furnace lids having different bar pressing forces and different pressing strokes are mixed in each operating furnace of the coke oven, for example, when removing the old type furnace lid, By switching the pressing force of the bar pressing cylinder to, for example, the low pressure side by pressing force switching means, and setting the pressing stroke of the cylinder to, for example, a long stroke by the stroke switching means, the bar of the old furnace lid is pressed by the pressing cylinder. Pressing can surely release the bar and take out the old furnace lid. Also, for example, when removing the furnace lid of the new type, the pressing force of the bar press cylinder is switched to, for example, the high pressure side by the pressing force switching means, and the pressing stroke of the cylinder is set to, for example, a short stroke by the stroke switching means. Thereby, the bar of the new furnace lid is pressed by the pressing cylinder, the bar is reliably released, and the new furnace lid can be taken out.

Second, the lifting stroke of lifting the furnace lid upward by the above-mentioned lifting cylinder is set to a distance at which the bar can be released from the engagement portion of the bar receiver in at least two types of furnace lids. The coke oven according to the first aspect of the present invention is characterized in that it is constituted by a furnace lid attaching / detaching apparatus.

Therefore, for example, even in a coke oven in which two types of furnace lids having different lifting strokes for releasing the engagement of the bar from the engaging portion of the bar receiver are mixed, the lifting stroke of the furnace lid is set to at least the two types of furnace lids. In the above, the bar is set to a distance that can be released from the engaging portion of the bar receiver. Therefore, even when two types of furnace lids are mixed, the furnace lid can be removed without any trouble.

Third, when the first furnace lid is removed, the bar pressing cylinder is switched to the low pressure side by the pressing force switching means, and the stroke of the cylinder is made longer by the stroke switching means. The invention according to the first or second aspect, wherein when the lid is removed, the bar pressure cylinder is switched to the high pressure side by the pressing force switching means, and the stroke of the cylinder is shortened by the stroke switching means. Of the coke oven.

Accordingly, for example, in a coke oven in which two types of old and new furnace lids are mixed, the old type furnace lid has a low pressing force of a bar and a long pressing stroke, and the new type furnace lid has a high pressing force of a bar. Even if the pressing stroke is short, by switching the pressing force of the bar pressing cylinder and the pressing stroke for each furnace lid, any furnace lid can be taken out without trouble by one furnace lid detacher. it can.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First, the configuration of the old and new furnace lids will be described.

In FIG. 3, reference numeral 1 denotes an old type furnace lid,
Bars 2 and 2 are provided at upper and lower portions of the furnace cover 1, respectively. These bars 2 are constantly urged in the direction of arrow B by a bar spring 4 provided in a spring case 3, and are mounted on a coke oven operation kiln 5 while being attached to a coke oven side. Both ends 2a of the engaging portion 6a of the receiving member 6 (see FIG.
Are engaged in a state of being urged by the urging force. Therefore, by pressing the front end 2b of the bar 2 in the direction of arrow A against the urging force of the spring 4, the bar 2 can be retracted and disengaged from the engaging portion 6a. Is configured.

Reference numeral 7 denotes a bar-pressing pedal, which is configured to be rotatable in the direction of the operating kiln 5 with a shaft 7a as a fulcrum, and an arm 7b extending from the pedal 7 at the time of rotation. The bar 2 is engaged with the case 3 to retreat in the direction of arrow A. The pedal 7 is used when the furnace lid 1 is removed by the old furnace lid detacher 27 (see FIG. 10). In the later-described detacher 15 of the present invention, the front end of the bar 2 is used. The pedal 7 is not used because it is performed by pressing 2b. It has been confirmed that there is no structural problem if the front end 2b of the bar 2 instead of the bed 7 is directly pressed when removing the bar 2 of the furnace lid 1 of the old method.

Reference numerals 8 denote furnace lid lifting shafts provided in the front left and right directions of the furnace lid 1, and engage with a furnace lid removing hook 20 of a furnace lid detacher 15 described later when the furnace lid 1 is attached and detached. The furnace lid 1
In order to lift up.

The bar 2, the spring case 3, the shaft 8 for lifting the furnace lid, and the bar press pedal 7 of the old furnace lid 1 are all provided in a single housing 9. The housing 9 is attached to the storage section 1a of the furnace lid 1 such that the entire housing 9 can be slid upward by 90 mm.

In order to remove the old furnace lid 1, it is necessary to press the front end 2b of the bar 2 and slide the bar 2 backward to release the engagement between the bar receiver 6 and the bar 2. However, the spring pressing force at that time is 8600 kg (low pressure), the upward sliding allowance of the bar 2 (upward sliding allowance of the housing 9) is 90 mm, and the spring pressing stroke in the arrow A direction of the bar 2 is 20 mm (long stroke). (See FIG. 7).

FIG. 5 shows a new type of furnace lid 10 having two upper and lower parts 11 and 11.
Is provided. These bars 11 are constantly urged in the direction of arrow B by a bar spring 12 provided at the rear thereof, and when mounted on the coke oven operating kiln 5, the bar bars 13 provided on the coke oven side are provided. Engagement part 13
a (see FIG. 6), both end portions 11a, 11a are engaged from the rear while being urged by the urging force of the spring 12. Therefore, by pressing the front end 11b of the bar 11 in the direction of arrow A against the urging force of the spring 12, the bar 11 is retracted, and the engaging portion 13a
And the bar 11 can be disengaged.

Reference numeral 14 denotes a furnace cover lifting shaft provided in the front left and right directions of the furnace cover 10, and a furnace cover removing hook 20 of a furnace cover attaching / detaching machine 15 described later engages when the furnace cover 10 is attached or detached. , For raising the furnace lid 10 upward. In addition, there is no upward sliding allowance on the bar 11 of the furnace lid 10 and the shaft 14 for lifting the furnace lid of the new method, and the furnace lid 10 is fixed to the body of the furnace lid 10 in the vertical direction.

In order to take out the furnace lid 10 of the new type, the front end 11b of the bar 11 is pressed in the direction of arrow A, and both ends 11a, 11a of the bar 11 engage with the engaging portions 13a of the bar receiver 13. Is released, the furnace cover removing hook 20 is connected to the furnace cover lifting shaft 14.
, And the furnace lid 10 must be slid upward. At this time, the spring pressing force is 15400 kg (high pressure), there is no upward sliding allowance of the bar 11, and the spring pressing in the direction of the arrow A of the bar 11 is performed. The stroke is 15 mm (short stroke) (see FIG. 8).

FIG. 1 and FIG. 2 show a furnace lid attaching / detaching apparatus according to the present invention. The furnace lid attaching / detaching apparatus comprises a furnace lid attaching / detaching machine 15 and a detacher attaching machine frame 16 supporting the detaching machine 15. It consists of. The detacher 15 is supported by upper and lower support portions 16a and 16b of the detacher mounter frame 16 on support shafts 17a and 17b, so that the support shafts 17a and 17b are used as central axes in the direction of arrow C. It is rotatably mounted.

Reference numeral 18 designates the frame 16 of the detacher mounting machine as indicated by an arrow D,
This is a forward / backward moving cylinder for moving forward / backward in the direction E, and extends forward (in the direction of arrow D) when the furnace lid 1 or 10 is taken out, so that the furnace lid attaching / detaching machine 15 is located on the front side of the furnace lid 1 or 10. After the furnace lid 1 or 10 is taken out, the detacher 15 is retracted (in the direction of arrow E).

Reference numerals 19, 19 denote the above-mentioned bar pressing cylinder, 2
Reference numerals 0 and 20 denote hooks for removing the furnace lid.
9 and a furnace cover removing hook 20 are provided so as to be vertically slidable with respect to a machine shaft 15a of the furnace cover attaching / detaching machine 15, and a lifting cylinder 21 provided on the machine shaft 15a.
As a result, it is configured to be able to ascend to a position shown by a two-dot chain line in FIG. 1 and to descend to a solid line position.

The cylinders 19 and 19 for pressing the bar are provided at two upper and lower positions corresponding to the bars 2 and 11 of the old and new furnace lids 1 and 10, respectively. The front ends 2b, 2b of the bars 1 and 2, and the front ends 11b and 1 of the bars 11 and 11 of the furnace lid 10 of the new type described above.
1b. In this case, since the spring pressing force of the bar of the new type and the old type of lid differ from each other as described above, the cylinder 19 is hydraulically driven (see FIG. 9), and the pressure is low (old furnace lid 1, 8400 kg) and high pressure (New furnace lids 10, 15
400 kg) is switched by a solenoid valve (pressing force switching means) 22 for use.

The spring pressing stroke of the bar 2 of the old furnace lid 1 and the bar 11 of the new furnace lid 10 (the old furnace lid is 20 m).
m, the new furnace lid is 15 mm) is adjusted by detecting with a limit switch 24 provided on the stroke detecting cylinder 23. That is, a long stroke detection limit switch 24a and a short stroke detection limit switch 24b are provided close to the stroke detection cylinder 23, and by switching these limit switches,
The stroke of the bar press cylinder 19 is determined. One limit switch is provided in place of the two limit switches 24a and 24b. When the limit switch is turned on by the detection cylinder, the timer starts counting, and the bar is pressed after a predetermined time has elapsed from the start of the timing. By stopping the sliding of the cylinder 19, the movement stroke of the cylinder 19 can be determined. In this case, by setting the predetermined time from the start of the time measurement of the timer to two types of long and short, that is, for a long stroke, the predetermined time is set long, and for a short stroke, the predetermined time is set short. Thus, two types of movement strokes can be set in the bar press cylinder 19. In the present embodiment, the stroke switching means can be constituted by the stroke detecting cylinder 23 and the limit switches 24a and 24b in the former example, and can be constituted by the stroke detecting cylinder, the limit switch and the timer in the latter example.

The furnace cover removing hook 20 is engaged with the furnace cover lifting shaft 8 or 14 of the new or old furnace cover 1 or 10 to engage the furnace cover 1.
Alternatively, the lifting stroke of the furnace lid 1 or 10 in the furnace lid attaching / detaching machine 15 is 140 mm for both new and old furnace lids. In this case, the old furnace lid 10
In the case of, there is an upward sliding allowance of 90 mm for the above-mentioned housing 9, but as shown in FIGS.
By setting the length to 40 mm, the room for extracting the bar 2 from the bar receiver 6 in the old type furnace cover 1 is 45 mm (see FIG. 7), and the room for extracting the furnace cover 10 in the new system from the bar receiver 13 is 40 mm (see FIG. 8). ), And there is no problem in extracting the bar 2 or 11 from the bar receiver 6 or 13. That is, the lifting stroke in which the furnace lid is lifted upward by the lifting cylinder 21 is performed by engaging the bars 2 and 11 of at least two kinds of furnace lids 1 and 10 with the engaging portions 6a and 13a of the bar stoppers 6 and 13. Is set to a distance that can be released from

Since the present invention is configured as described above, when the old furnace lid 1 is taken out by the furnace lid detacher 15 of the present invention, first, the moving machine is moved in parallel to the coke oven, and the old furnace lid 1 is removed. The moving machine is stopped at the center of the furnace cover. First, the machine frame 16 for the furnace cover detacher is advanced in the direction of the furnace cover 1 (the direction of arrow D) by the forward / backward moving cylinder 18, and the cylinders 19, 19
Is brought into contact with the front ends 2b, 2b of the bars 2, 2 of the old furnace lid 1 (the position indicated by the two-dot chain line in FIG. 2). After that, the solenoid valve 22 is switched to the old furnace lid side (low pressure side), and the
Is driven at 8600 kg, and based on the detection of the limit switch 24 a, the bar 2 is moved 20 m against the urging force of the spring 4.
By pressing the stroke m (in the direction of arrow D in FIG. 2 and the direction of arrow A in FIG. 3), the engagement between both ends 2a of the bar 2 and the engaging portion 6a of the bar bar 6 is released. Then, the lifting cylinder 21 is driven to raise the furnace cover removing hook 20, and the hook 2
0 is engaged with the furnace lid lifting shaft 8 of the furnace lid 1, and the ascent is further continued. The lifting cylinder 21 is to be lifted by 140 mm.
In the case of 0 mm, only the housing 9 of the old furnace lid 1 slides upward in the storage portion 1a, and in the subsequent ascent process of 50 mm, the furnace lid 1 is engaged with the hook 20 and the lifting shaft 8 in an engaged state. Lift up. 1 lifting stroke
At 40 mm, both ends 2a of the bar 2 are positioned 45 mm above the engaging portion 6a of the bar receiver 6 (the position indicated by the two-dot chain line in FIG. 7), so that there is no problem in taking out the furnace lid 1. At this position, the forward / backward moving cylinder 18 is retracted (the direction of arrow E in FIG. 2 and the direction of arrow B in FIG. 3), and
From the operation kiln 5. Thereafter, with the furnace cover 1 held by the furnace cover removing hook 20, the detacher 15 is rotated by 90 degrees around the support shafts 17 a and 17 b, and the process proceeds to a step of cleaning the furnace cover 1. When the furnace lid 1 is mounted on the operating kiln 5, the furnace lid 1 can be mounted on the operating kiln 5 in the reverse process.

Next, the new furnace cover 1 is removed by the furnace cover detacher 15 of the present invention.
In order to remove 0, the moving machine is first moved parallel to the coke oven, the moving machine is stopped at the center of the furnace cover of the new furnace cover 10, and the furnace cover detacher mounting machine frame 16 is firstly moved by the forward / backward moving cylinder 18. In the direction of the furnace lid 10 (the direction of arrow D), and the cylinders 19, 19
1 is brought into contact with the front ends 11b, 11b. Then, the solenoid valve 22 is switched to the new furnace lid side (high pressure side), the cylinder 19 is driven at 15400 kg, and the bar 11 is pressed against the urging force of the spring 12 by 15 mm based on the detection of the limit switch 24b. Press the stroke (arrow D in FIG. 2).
Direction (arrow A direction in FIG. 5), the engagement between the both ends 11a of the bar 11 and the engaging portion 13a of the bar bar 13 is released. Then, the lifting cylinder 21 is driven to raise the furnace cover removing hook 20, and the hook 20 is connected to the furnace cover lifting shaft 1 of the furnace cover 10.
4 and continues to ascend. The lifting cylinder 21 rises 140 mm, but the bar 11 of the new furnace lid 10 has no upward sliding allowance.
From the beginning of the ascent, the furnace lid 10 is lifted upward with the hook 20 and the lifting shaft 14 engaged. When the lifting cylinder 21 rises 140 mm, both ends 11a of the bar 11 are engaged with the engaging portions 13 of the bar receiver 13 at that time.
Since it is located 40 mm above (a position indicated by a two-dot chain line in FIG. 8), there is no problem in removing the furnace lid 10. Then, in the ascending position, the forward-reverse cylinder 1
8 is taken to the rear end (in the direction of arrow E in FIG. 2 and in the direction of arrow B in FIG. 5), and the furnace lid 10 is taken out of the operating kiln 5. Thereafter, with the furnace cover 10 held by the furnace cover removing hook 20, the detacher 15 is rotated by 90 degrees about the support shafts 17 a and 17 b, and the process proceeds to the process of cleaning the furnace cover 10. When the furnace lid 10 is mounted on the operating kiln 5, the furnace lid 10 can be mounted on the operating kiln 5 in the reverse process.

As described above, according to the present invention, the old and new two types differing in the pressing force and the pressing stroke of the bar and the lifting stroke of the furnace lid.
In a coke oven in which various types of furnace lids 1 and 10 are mixed, the pressing force and the pressing stroke of the bar pressing cylinder 19 of the furnace lid attaching / detaching machine 15 are configured to be switchable.
By setting the lifting stroke of 0 to a distance at which the bars 2 and 11 of the furnace lids 1 and 10 can be released from the respective bar receivers 6 and 13, any one of the furnace lids 1 and 10 can be
Is configured to be removable.
Even in a coke oven where old and new oven lids 1 and 10 of different types coexist, both oven lids can be removed without any trouble with only one oven lid detacher 15, and two coke oven moving machines as in the prior art can be removed. It is not necessary to perform the operation, and the work of replacing the furnace lid can be performed extremely efficiently.

[0030]

As described above, the present invention should be removed even if, for example, two types of old and new furnace lids having different bar pressing forces and pressing strokes are mixed in each operating furnace of a coke oven. By switching the pressing force and pressing stroke of the bar pressing cylinder according to the furnace lid, a plurality of types of furnace lids can be removed with a single furnace lid detacher, and as in the prior art, two types of furnace lids can be removed.
There is no need to operate the two coke oven movers, and the furnace lid can be removed very efficiently.

Also, for example, in a coke oven in which two types of furnace lids having different lifting strokes for releasing engagement of the bar from the engaging portion of the bar receiver are mixed, the lifting stroke of the furnace lid is set to at least the two types of furnace lids. In the above, the bar is set to the distance that can be released from the bar engaging part, so that even if two types of furnace lids with different lifting strokes are mixed, the furnace lid can be removed without any trouble, and the furnace lid can be extremely efficiently Can be removed.

[Brief description of the drawings]

FIG. 1 is a side view of an apparatus for attaching and detaching a furnace lid of a coke oven according to the present invention.

FIG. 2 is a side view showing a state in which a furnace lid is removed by the desorption device.

FIG. 3 is a side sectional view of an old type furnace lid.

FIG. 4 is a front view of an upper half of a furnace lid of an old method.

FIG. 5 is a side sectional view of a new type furnace lid.

FIG. 6 is a front view of an upper half of a new type furnace lid.

FIG. 7 is a diagram showing the relationship between the bar of the furnace lid and the bar receiver of the old system.

FIG. 8 is a diagram showing the relationship between the bar of the furnace lid and the bar receiving of the new system.

FIG. 9 is a conceptual diagram of a hydraulic system showing a switching configuration of a pressing force and a pressing stroke of a bar pressing cylinder.

FIG. 10 is a side view of the conventional furnace lid attaching / detaching machine, showing a state where the furnace lid is detached.

[Explanation of symbols]

 Reference Signs List 1 Furnace lid of old method 10 Furnace lid of new method 2, 11 Bar 8, 14 Furnace lid lifting shaft 15 Furnace lid detacher 19 Barber pressing cylinder 20 Furnace lid removal hook 21 Lifting cylinder 22 Solenoid valve 23 Stroke detection cylinder 24a, 24b Limit switch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Yukio Muramura, Inventor 958-23, Ariyasu, Shonai-cho, Kaho-gun, Fukuoka F-term in Kobukuro Works, Ltd. (reference) 4H012 EA00

Claims (3)

[Claims] An oven lid detacher is disposed on the front side of a furnace lid to be detached, and the oven lid is attached to and detached from the furnace lid by the detacher. A bar pressing cylinder facing the bar of the lid and a furnace lid removing hook that can be engaged with the furnace lid lifting shaft of the furnace lid are provided, and the bar pressing cylinder and the furnace lid removing hook are connected to the furnace. It is configured to be vertically slidable along the machine axis of the lid removal machine, and a lifting cylinder that drives these cylinders and hooks vertically along the machine axis is provided. An apparatus for removing a lid from a coke oven, comprising: a pressing force switching means for switching between an operation and a low pressure operation; and a stroke switching means for changing a pressing stroke of the bar press cylinder. 2. A lifting stroke for lifting the furnace lid upward with the lifting cylinder is set at a distance at which the bar can be released from the engagement portion of the bar receiver in at least two types of furnace lids. The apparatus for removing a furnace lid from a coke oven according to claim 1, wherein: 3. When the first furnace lid is removed, the bar pressure cylinder is switched to a low pressure side by the pressing force switching means, and the stroke of the cylinder is set to a long stroke by the stroke switching means. 3. The system according to claim 1, wherein when the lid is removed, the bar pressure pressing cylinder is switched to a high pressure side by the pressing force switching means, and the stroke of the cylinder is shortened by the stroke switching means. The furnace lid removal device for a coke oven described in the above.