EP2031041A1

EP2031041A1 - Red-hot coke receiving device

Info

Publication number: EP2031041A1
Application number: EP07737777A
Authority: EP
Inventors: Takashi Fukuoka; Akio Inoue
Original assignee: Nittetsu Plant Designing Corp; Nippon Steel Engineering Co Ltd
Current assignee: Nippon Steel Engineering Co Ltd; Nippon Steel Plant Designing Corp
Priority date: 2006-03-10
Filing date: 2007-03-05
Publication date: 2009-03-04
Also published as: WO2007105513A1; JP5191881B2; KR20080102428A; EP2031041A4; UA96439C2; CN101400764B; RU2008140027A; RU2430139C2; JPWO2007105513A1; CN101400764A

Abstract

A red hot coke receiving apparatus is provided which can receive red hot coke while only a conveying bucket placed on a bucket truck is rotated and which is applicable to small coke ovens.

The red hot coke receiving apparatus includes: a coke conveying bucket 13 that includes a discharge gate 11 provided in the bottom portion thereof and a conical portion 12 provided in the lower portion thereof; and a hoisting frame mechanism 15 that includes an outer frame portion 14 surrounding the conical portion 12 of the conveying bucket 13 and has a function of hoisting the conveying bucket 13 and a function of opening and closing the discharge gate 11 of the conveying bucket 13. When the bucket is hoisted, the discharge gate 11 is brought into contact with the lower surface of the conical portion 12 and lifts the conveying bucket 13. When the red hot coke receiving apparatus is placed on a bucket truck 44, the outer frame portion 14 is lowered, and hoisting rollers 40 secured to the outer frame portion 14 are separated away from recessed portions 39 of door engaging members 38, so that the conveying bucket 13 can rotate independent of the hoisting frame mechanism 15. In the red hot coke receiving apparatus, portions of the outer frame portion 14 of the hoisting frame mechanism 15 that are located on opposite sides of the conveying bucket 13 are prevented from being raised above the conical portion 12.

Description

TECHNICAL FIELD

The present invention relates to a red hot coke receiving apparatus that receives red hot coke from a coke oven and conveys it to a coke dry quenching facility.

BACKGROUND ART

Conventionally, a red hot coke receiving apparatus including a cylindrical conveying bucket that can be hoisted by a hoisting frame mechanism is used to receive red hot coke discharged from a coke oven and to carry and charge it into a coke dry quenching facility (see, for example, Patent Document 1). In such a red hot coke receiving apparatus, the conveying bucket, together with the hoisting frame mechanism, is placed on a rotary table of a bucket truck, and the rotary table is driven to rotate. In this manner, the red hot coke discharged from the coke oven can be received while the conveying bucket is rotated. Therefore, the conveying bucket can uniformly receive the red hot coke, and the volume efficiency of the coke can be higher than that in a rectangular non-rotary conveying bucket. In addition, the weight of the apparatus can be reduced.
A description will be given of a red hot coke receiving apparatus described in Patent Document 1 with reference to Fig. 7. Fig. 7 shows the red hot coke receiving apparatus placed on a bucket truck. The red hot coke receiving apparatus 9 includes: a conveying bucket 91 having a discharge gate provided in the bottom portion thereof; and a hoisting frame mechanism 92 having a function of hoisting the conveying bucket 91 which has received coke and a function of opening-closing the discharge gate. The hoisting frame mechanism 92 is divided into two parts. One includes hooks 95 and hoisting rods 94 each having an engagement pin 93 to be engaged with a hoisting crane hook (not shown). The other includes catching blocks 97 and discharge gate opening-closing mechanisms 96 provided on the side surfaces of the barrel portion of the conveying bucket 91. When the hoisting frame mechanism 92 is hoisted, the hooks 95 engage with the catching blocks 97, and the two parts of the hoisting frame mechanism are integrated into a single body. When the red hot coke receiving apparatus 9 is placed on the bucket truck, the hooks 95 are released from the catching blocks 97, and the hoisting frame mechanism 92 is divided into the two parts.
[Patent Document 1] Japanese Examined Patent Application Publication No. Sho 63-14032 .

DISCLOSURE OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

However, if the conveying bucket is rotated together with the hoisting frame mechanism, the required rotation radius is greater than that required when the conveying bucket alone is rotated. In this case, a large coke-receiving space for the bucket must disadvantageously be provided in front of the coke oven, and the driving force required for the rotation must be increased. Therefore, in the structure of the red hot coke receiving apparatus described in Patent Document 1, the conveying bucket is provided separately from the hoisting frame mechanism so that only the conveying bucket can rotate at the time of receiving red hot coke. Moreover, the hoisting frame mechanism is divided into two parts, and the conveying bucket is hoisted while being supported at both sides thereof. However, since the hoisting frame mechanism is divided into two parts, the strength of the hoisting frame mechanism is disadvantageously reduced, and a difficulty arises in holding the conveying bucket stably. In view of the above, an apparatus is used which includes a hoisting frame mechanism having an outer frame portion provided with four hoisting rollers for holding a conveying bucket. In this apparatus, the outer frame portion can be separated from the conveying bucket when the conveying bucket is rotated. However, a space for placing the outer frame portion must be provided on the outer circumferential side of the conveying bucket. If a small coke oven, for example, is used, the width and height of a coke-receiving space in front of the coke oven are small. In this case, the conveying bucket cannot be used together with the hoisting frame mechanism having the outer frame portion and disposed on the outer circumferential side of the conveying bucket because the outer wall of the coke oven interferes with the outer frame portion.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a red hot coke receiving apparatus that can receive red hot coke from a coke oven while only a conveying bucket placed on a bucket truck is rotated and that is applicable to small coke ovens.

MEANS FOR SOLVING THE PROBLEMS

A red hot coke receiving apparatus according to the present invention which achieves the above object includes: a conveying bucket for coke that includes a discharge gate provided in a bottom portion thereof and a conical portion provided in a lower portion thereof; and a hoisting frame mechanism that includes an outer frame portion surrounding the conical portion of the conveying bucket and has a function of hoisting the conveying bucket and a function of opening and closing the discharge gate of the conveying bucket. When the conveying bucket is hoisted, the bucket is lifted while the discharge gate is brought into contact with the lower surface of the conical portion. When the red hot coke receiving apparatus is placed on a bucket truck, the outer frame portion is separated away from the conical portion to allow the conveying bucket to rotate independently of the hoisting frame mechanism. In the red hot coke receiving apparatus, portions of the outer frame portion of the hoisting frame mechanism that are located on the left and right sides of the conveying bucket are prevented from being raised above the conical portion.
In the red hot coke receiving apparatus according to the present invention, the outer dimension of the outer frame portion at the left and right portions that are prevented from being raised above the conical portion is preferably equal to or less than a maximum diameter of the conveying bucket.
In the red hot coke receiving apparatus according to the present invention, it is preferable to directly attach the hoisting roller for opening and closing the discharge gate to the outer frame portion. The hoisting roller is provided to push up and close the discharge gate when the hoisting frame mechanism is hoisted and to downwardly open the discharge gate when the hoisting frame mechanism is placed on a coke charging hopper.
In the red hot coke receiving apparatus according to the present invention, it is preferable that the outer frame portion be vertically movable in the height direction of the conical portion. Furthermore, the outer frame portion is preferably movable to a raised position in which the discharge gate is pushed up and brought into contact with the lower surface of the conical portion to close an opening, to a first lowered position in which, when the conveying bucket is placed on a coke charging hopper, the discharge gate is supported so as to be opened at a predetermined degree of opening, and to a second lowered position in which, when the red hot coke receiving apparatus is placed on the bucket truck, the outer frame portion is separated away from the discharge gate.

EFFECTS OF THE INVENTION

In the red hot coke receiving apparatus according to claims 1 to 4, the outer frame portion of the hoisting frame mechanism is prevented from being raised above the conical portion of the conveying bucket. Therefore, even when the outer frame portion is disposed on the outer circumferential side of the conveying bucket, the outer dimension of the outer frame in the left-right direction can be equal to or less than the outer dimension of the conveying bucket. Accordingly, even in a small coke oven, red hot coke can be received from the coke oven while the conveying bucket placed on a bucket truck is rotated.
In particular, in the red hot coke receiving apparatus according to claim 2, the outer dimension of the outer frame in the left-right direction is equal to or less than the maximum diameter of the conveying bucket. Therefore, the red hot coke receiving apparatus is applicable to small coke ovens in which the width and height of a coke-receiving space in front of the coke oven are small, so long as a space large enough to install the conveying bucket itself is provided.
In the red hot coke receiving apparatus according to claim 3, the hoisting roller for opening and closing the discharge gate is directly attached to the outer frame portion. Therefore, by lowering or raising the outer frame portion relative to the conveying bucket, the hoisting roller can be lowered or raised to open and close the discharge gate. As a result, the function of opening and closing the discharge gate can be simply configured, and the production cost of the red hot coke receiving apparatus can be reduced.
In the red hot coke receiving apparatus according to claim 4, the outer frame portion is provided so as to be vertically movable in the height direction of the conical portion. The outer frame portion is movable to the raised position in which the discharge gate is pushed up and brought into contact with the lower surface of the conical portion to close the opening, to the first lowered position in which, when the conveying bucket is placed on the coke charging hopper, the discharge gate is supported so as to be opened at a predetermined degree of opening, and to a second lowered position in which, when the red hot coke receiving apparatus is placed on the bucket truck, the outer frame portion is separated away from the discharge gate. Therefore, the discharge gate can be opened and closed only by the operation of the hoisting frame, i.e., by changing the height of the outer frame portion, and the conveying bucket can be rotated independently.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a partially cut-away front view of a red hot coke receiving apparatus according to an embodiment of the present invention.
Fig. 2 is a partially cut-away side view of the red hot coke receiving apparatus.
Fig. 3 is a bottom view of the red hot coke receiving apparatus.
Fig. 4 is a front view illustrating the state in which the hoisting of the red hot coke receiving apparatus from a bucket truck is started.
Fig. 5 is a partially cut-away front view illustrating the state in which red hot coke is discharged from the red hot coke receiving apparatus to a coke charging hopper in a coke dry quenching facility.
Fig. 6 is a partially cut-away side view illustrating the state in which the red hot coke is discharged from the red hot coke receiving apparatus to the coke charging hopper in the coke dry quenching facility.
Fig. 7 illustrates the configuration of a conventional red hot coke receiving apparatus.

DESCRIPTION OF THE REFERENCE NUMERALS

10: red hot coke receiving apparatus, 11: discharge gate, 12: conical portion, 13: conveying bucket, 14: outer frame portion, 15: hoisting frame mechanism, 16: flange portion, 17: barrel portion, 18, 19: door, 20: rotation arm portion, 21: attaching member, 22: pin, 23, 24: first grasping member, 25, 26: second grasping member, 27: connecting member, 28, 29: pillar member, 30, 31: beam member, 32: frame body, 33: hoisting crane hook, 34: engagement pin, 35: hoisting yoke, 36: hoisting guide roller, 37: reinforcing member, 38: door engaging member, 39: recessed portion, 40: hoisting roller, 41: coke charging hopper, 42: hopper receiving block, 43: bucket receiving seat, 44: bucket truck, 45: rotary table, 46: running track, 47: rail, 48: carbonizing chamber

BEST MODE FOR CARRYING OUT THE INVENTION

Next, with reference to the accompanying drawings, an embodiment embodying the present invention is described to provide an understanding of the invention.
Fig. 1 is a partially cut-away front view of a red hot coke receiving apparatus according to the embodiment of the present invention; Fig. 2 is a partially cut-away side view of the red hot coke receiving apparatus; Fig. 3 is a bottom view of the red hot coke receiving apparatus; Fig. 4 is a front view illustrating the state in which the hoisting of the red hot coke receiving apparatus from a bucket truck is started; Fig. 5 is a partially cut-away front view illustrating the state in which red hot coke is discharged from the red hot coke receiving apparatus to a coke-charging hopper in a coke dry quenching facility; and Fig. 6 is a partially cut-away side view illustrating the state in which the red hot coke is discharged from the red hot coke receiving apparatus to the coke-charging hopper in the coke dry quenching facility.
As shown in Figs. 1 to 3, the red hot coke receiving apparatus 10 according to the embodiment of the present invention includes: a coke conveying bucket 13 that includes a discharge gate 11 provided in the bottom portion thereof and a conical portion 12 provided in the lower portion thereof; and a hoisting frame mechanism 15 that includes an outer frame portion 14 surrounding the conveying bucket 13 and has a function of hoisting the conveying bucket 13 and a function of opening and closing the discharge gate 11 of the conveying bucket 13. Hereinafter, a detailed description is given of these components.
The conveying bucket 13 includes: a large diameter annular flange portion 16 having a coke receiving opening formed in the upper portion thereof; and a cylindrical barrel portion 17 formed so as to be continuous with the lower end of the flange portion 16. The conical portion 12 having a gradually decreasing diameter is provided so as to be continuous with the lower end of the barrel portion 17, and a coke discharge opening is formed at an end portion of the conical portion 12. As shown in Figs. 1 and 3, the discharge gate 11 includes a pair of flat plate- like doors 18 and 19 which, when closed, externally cover and close the coke discharge opening and, when opened (see Fig. 5), are separated at the central portion toward left and right sides to expose the coke discharge opening. Each of the doors 18 and 19 has rotation arm portions 20 formed in the base portions thereof in the front and rear directions, and the rotation arm portions 20 are inserted into recessed portions of attaching members 21 provided in the left and right side surfaces of the conical portion 12 and are secured with pins 22.
As shown in Fig. 3, the outer frame portion 14 includes: a pair of first grasping members 23 and 24 that sandwich the conical portion 12 in its left-right direction to place it in position and are provided such that the distance between their outer end surfaces is less than the outer diameter of the flange portion 16 of the conveying bucket 13 (i.e., the maximum diameter of the conveying bucket 13) ; a pair of second grasping members 25 and 26 that sandwich the conical portion 12 in its front-rear direction and are provided such that the distance between their outer end surfaces is greater than the outer diameter of the flange portion 16 of the conveying bucket 13; and connection members 27 that connect adjacent end portions of the first and second grasping members 23 to 26. As shown in Fig. 1, the width of the upper end of each of the first grasping members 23 and 24 is smaller than the width of the lower end thereof, as viewed in cross-section. This allows the inner surfaces of the first grasping members 23 and 24 to be disposed in place with respect to the left and right side surfaces of the conical portion 12.
As shown in Figs. 1 and 2, frame bodies 32 are formed on the upper portions of the second grasping members 25 and 26. Each of the frame bodies 32 includes: pillar members 28 and 29 vertically extending on opposite sides of the second grasping member 25 (26) ; and beam members 30 and 31, the beam member 30 connecting the intermediate portions of the pillar members 28 and 29, the beam member 31 connecting the upper end portions of the pillar members 28 and 29. A hoisting yoke 35 provided with an engagement pin 34 to be engaged with a hoisting crane hook 33 is provided on the upper end of each of the frame bodies 32. A hoisting guide roller 36 is attached to the central portion of the outer surface of each of the beam members 30 and 31 and serves as a guide when the red hot coke receiving apparatus 10 is hoisted by a hoisting apparatus of a coke dry quenching facility (not shown). Reference numeral 37 represents a reinforcing member used when the pillar members 28 and 29 are vertically disposed on opposite sides of the second grasping member 25 (26).
As shown in Figs. 1 to 3, hoisting rollers 40 for opening and closing the discharge gate 11 are attached to opposite end portions of the inner surface of each of the second grasping members 25 and 26. The hoisting rollers 40 push up and close the discharge gate 11 when the hoisting frame mechanism 15 is hoisted, and pull down and open the discharge gate 11 when the hoisting frame mechanism 15 is placed on a coke charging hopper 41 (see Fig. 5) . Door engaging members 38 are attached to front and rear end portions of each of the doors 18 and 19. The door engaging member 38 has a recessed portion 39 formed in the central portion thereof, the recessedportion 39 having openings on its outer side and lower side. When the outer frame portion 14 is raised, the end portion of the hoisting roller 40 can enter the recessed portion 39 from the lower opening thereof. Since the upper surface of the recessed portion 39 is inclined downwardly toward the outer side as shown in Fig. 1, the upward and downward stroke of the roller 40 can be advantageously reduced. Moreover, as shown in Figs. 2 and 3, bucket receiving seats 43 are attached to the central portions of the front and rear side surfaces of the conical portion 12. When red hot coke is discharged to the coke charging hopper 41 of the coke dry quenching facility, the bucket receiving seats 43 is in contact with the upper surfaces of hopper receiving blocks 42 (see Figs. 4 and 5) provided in upper end portions of the coke charging hopper 41 and support the conveying bucket 13.
With the above configuration, the outer frame portion 14 outwardly surrounding the conical portion 12 of the conveying bucket 13 can be raised by engaging the hoisting crane hooks 33 with the engagement pins 34 of the hoisting yokes 35 of the frame bodies 32 and raising the hoisting crane hook 33. In this case, the hoisting rollers 40 secured to the outer frame portion 14 are in contact with the recessed portions 39 of the door engaging members 38, and the conveying bucket 13 can thereby be hoisted through the discharge gates 18 and 19. In this manner, the function of hoisting the conveying bucket 13 is provided in the hoisting frame mechanism 15. Since the first grasping members 23 and 24 are disposed such that the distance between their outer end surfaces is less than the outer diameter of the flange portion 16 of the conveying bucket 13, the outer frame portion 14 can be prevented from being raised above the conical portion 12 even when the outer frame portion 14 is raised.
Moreover, when the outer frame portion 14 is raised, the hoisting rollers 40 are raised. Then, the hoisting rollers 40 are brought into contact with the upper surfaces of the recessed portions 39 of the door engaging members 38 and push up the door engaging members 38, so that the rotation arm portions 20 are rotated about the pins 22. Accordingly, the doors 18 and 19 externally cover the coke discharge opening of the conical portion 12, and the coke discharge opening can thereby be closed. When the outer frame portion 14 is lowered, the hoisting rollers 40 are lowered. As the hoisting rollers 40 are lowered, the doors 18 and 19 are rotationally moved by gravity about the pins 22 through the rotation arm portions 20 while the upper surfaces of the recessed portions 39 of the door engaging members 38 are brought into contact with the hoisting rollers 40. Therefore, the doors 18 and 19 are opened toward the left and right sides to expose the coke discharge opening of the conical portion 12. In this manner the function of opening and closing the discharge gate 11 is provided in the hoisting frame mechanism.
The red hot coke receiving apparatus 10 is hoisted by engaging the hoisting crane hooks 33 with the engagement pins 34 of the hoisting yokes 35 provided in the front and rear portions of the hoisting frame mechanism 15 and can be lowered and placed on a rotary table 45 provided in the central portion of a bucket truck 44 by lowering the hoisting crane hooks 33. In this case, the red hot coke receiving apparatus 10 is placed on the rotary table 45 with the lower surface of the discharge gate 11 being in contact with the rotary table 45. When the hoisting crane hooks 33 are further lowered, only the hoisting frame mechanism 15 is lowered. In this case, the outer frame portion 14 is separated away from the conical portion 12, and the hoisting rollers 40 move out of the recessed portions of the door engaging members 38. Therefore, the conveying bucket 13 is separated from the hoisting frame mechanism 15. When the hoisting crane hooks 33 are lowered by a predetermined distance, for example, L1 measured from the point where the lower surface of the discharge gate 11 is in contact with the rotary table 45, the hoisting frame mechanism 15 is placed on the bucket truck 44 with the lower surface of the outer frame portion 14 being in contact with the outer circumference of the bucket truck 44. In this manner, the conveying bucket 13 and the hoisting frame mechanism 15 can be separately placed on the bucket truck 44. Therefore, when the conveying bucket 13 receives the red hot coke, the conveying bucket 13 can be driven to rotate independently of the hoisting frame mechanism 15 by rotating the rotary table 45.
Next, a description is given of the operation of the red hot coke receiving apparatus 10 according to the embodiment of the present invention. First, as shown in Fig. 1, the conveying bucket 13 is hoisted and moved with the recessed portions 39 of the door engaging members 38 being in contact with the hoisting rollers 40 of the hoisting frame mechanism 15 provided in the red hot coke receiving apparatus 10, and thereby the red hot coke receiving apparatus 10 is placed on the bucket truck 44. Subsequently, the bucket truck 44 is allowed to run on rails 47 disposed in a running track 46 and is moved to a coke-receiving space provided beside a carbonizing chamber 48 from which the coke is discharged.
Then, the rotary table 44 is driven to rotate, and the conveying bucket 13 receives the red hot coke discharged from the carbonizing chamber 48 while being rotated. Since the conveying bucket 13 is rotated, the red hot coke receiving position in the conveying bucket 13 is continuously changed. Therefore, the level of the received red hot coke is maintained uniformly in the entire conveying bucket 13. After completion of receiving the red hot coke, the rotation of the rotary table 45 is stopped, and the bucket truck 44 is moved to and stopped at a red hot coke receiving apparatus-receiving gate in the coke dry quenching facility.
When the bucket truck 44 is stopped at the red hot coke receiving apparatus-receiving gate in the coke dry quenching facility, the hoisting crane hooks 33 are engaged with the hoisting yokes 35 provided on the front and rear sides of the hoisting frame mechanism 15, as shown in Fig. 4, and the hoisting frame mechanism 15 is hoisted. As the hoisting frame mechanism 15 is raised, the hoisting rollers 40 disposed in the outer frame portion 14 enter the recessed portions 39 of the door engaging members 38. When the outer frame portion 14 is raised from the bucket truck 44 by the predetermined distance L1, the hoisting rollers 40 is brought into contact with the upper surfaces of the recessed portions 39 of the door engaging members 38, and the discharge gate is brought into contact with the lower surface of the conical portion 12 of the conveying bucket 13.
Specifically, when the hoisting frame mechanism 15 is hoisted, the hoisting rollers 40 push up the door engaging members 38. Then, the doors 18 and 19 are brought into pressure contact with the coke discharge opening of the conical portion 12 from the outer side, and the coke discharge opening is thereby closed. At the same time, the outer frame portion 14 is raised, whereby the conveying bucket 13 is hoisted. Therefore, the conveying bucket 13 and the hoisting frame mechanism 15 are raised in an integrated manner. Since the hoisting guide rollers 36 are disposed on the frame bodies 32 of the hoisting frame mechanism 15 so as to outwardly protrude therefrom, the red hot coke receiving apparatus 10 is hoisted along a hoisting passage (not shown) of the coke dry quenching facility while the horizontal movement is prevented. At this time, since the conveying bucket is raised by the four hoisting rollers 40 secured to the outer frame portion 14 surrounding the conical portion 12, the conveying bucket can be held stably. In addition, since the hoisting frame mechanism is not divided into two parts as in Patent Document 1, the hoisting frame mechanism can have sufficient strength.
The red hot coke receiving apparatus 10 hoisted at a predetermined height is laterally moved to a position above the coke charging hopper 41 of the coke dry quenching facility. Then, the hoisting crane hooks 33 are lowered to lower the red hot coke receiving apparatus 10. When the red hot coke receiving apparatus 10 is brought close to the coke charging hopper 41, the bucket receiving seats 43 disposed in the front and rear portions of the conveying bucket 13 first are brought into contact with and are seated on the upper surfaces of the hopper receiving blocks 42 disposed on the upper end portions of the coke charging hopper 41, as shown in Figs. 5 and 6. In this manner, the conveying bucket 13 is supported by the upper end portions of the coke charging hopper 41, and only the hoisting frame mechanism 15 is lowered when the hoisting crane hook 33 is lowered.
When the hoisting frame mechanism 15 is lowered, the hoisting rollers 40 disposed in the outer frame portion 14 are also lowered. At this time, the doors 18 and 19 are rotationally moved by gravity about the pins 22 through the rotation arm portions 20 according to the lowered amount of the hoisting rollers 40 while the upper surfaces of the recessed portions 39 of the door engaging members 38 are brought into contact with the hoisting rollers 40. Therefore, the doors 18 and 19 are opened toward the left and right sides to gradually expose the coke discharge opening of the conical portion 12. In this manner, the discharge of the red hot coke is started. Then, when the outer frame portion 14 is lowered by a predetermined distance, for example, L2 measured from the point where the bucket receiving seats 43 are seated on the hopper receiving block 42, the lower end of the outer frame portion 14 is in contact with and placed on the upper surface of the coke charging hopper 41, and the movement of the doors 18 and 19 is stopped. In this state, the entire amount of the red hot coke is discharged to the coke charging hopper 41. Preferably, the doors 18 and 19 are opened at an inclination angle of about 40 degrees or more, as shown in Fig. 5. In this manner, the coke is allowed to smoothly fall.
After completion of the discharge of the red hot coke, the hoisting crane hooks 33 are raised to hoist the hoisting frame mechanism 15. As the hoisting frame mechanism 15 is raised, the hoisting rollers 40 disposed in the outer frame portion 14 push up the door engaging members 38, and the doors 18 and 19 are gradually closed. When the outer frame portion 14 is raised by a predetermined distance L2 measured from the upper end of the coke charging hopper 41, the four hoisting rollers 40 secured to the outer frame portion 14 push up the door engaging members 38. Then, the doors 18 and 19 are brought into pressure contact with the coke discharge opening of the conical portion 12 from the lower side, and the coke discharge opening is closed. When the hoisting crane hook 33 is further raised, the empty conveying bucket 13 is raised together with the hoisting frame mechanism 15, and the red hot coke receiving apparatus 10 is separated from the upper end of the coke charging hopper 41.
The red hot coke receiving apparatus 10 hoisted at a predetermined height is laterally moved to a position above an outlet in a hoisting passage. Then, the hoisting crane hooks 33 are lowered to lower the red hot coke receiving apparatus 10 in the hoisting passage, and the red hot coke receiving apparatus 10 is placed on the bucket truck 44 stopped at the red hot coke receiving apparatus-receiving gate of the coke dry quenching facility. Next, the bucket truck 44 having the empty conveying bucket 13 placed thereon is moved toward the carbonizing chamber to which the red hot coke is discharged.
While the embodiment of the present invention has been described, the present invention is not limited to the embodiment. Various modifications may be made without changing the gist of the invention, and red hot coke receiving apparatuses configured by combining part or all of the above embodiment and modified embodiments of the present invention are included in the scope of right of the present invention. For example, the outer dimension of the outer frame portion of the hoisting frame mechanism of the red hot coke receiving apparatus is less than the maximum diameter of the conveying bucket in the above embodiment but may be substantially the same as the maximum diameter of the conveying bucket.

Claims

A red hot coke receiving apparatus, comprising: a conveying bucket for coke that includes a discharge gate provided in a bottom portion thereof and a conical portion provided in a lower portion thereof; and a hoisting frame mechanism that includes an outer frame portion surrounding the conical portion of the conveying bucket and has a function of hoisting the conveying bucket and a function of opening and closing the discharge gate of the conveying bucket, a hoisting roller of the hoisting mechanism entering a recess of a door-engaging member when the conveying bucket is hoisted and lifts the conveying bucket and that, the hoisting roller of the hoisting frame mechanism being separated away from a recessed portion to allow the conveying bucket to rotate independently of the hoisting frame mechanism when the red hot coke receiving apparatus is placed on a bucket truck, wherein portions of the outer frame portion of the hoisting frame mechanism that are located on left and right sides of the conveying bucket are prevented from being raised above the conical portion.
The red hot coke receiving apparatus according to claim 1, wherein an outer dimension of the outer frame portion at the left and right portions that are prevented from being raised above the conical portion is equal to or less than a maximum diameter of the conveying bucket.
The red hot coke receiving apparatus according to any one of claims 1 and 2, wherein the hoisting roller is directly attached to the outer frame portion, the hoisting roller being provided to downwardly open the discharge gate when the conveying bucket is placed on a coke charging hopper and to push up and close the discharge gate.
The red hot coke receiving apparatus according to any one of claims 1 and 2, wherein the outer frame portion is vertically movable in a height direction of the conical portion to a raised position in which the discharge gate is pushed up and brought into contact with a lower surface of the conical portion to close a coke discharge opening, to a first lowered position in which, when the conveying bucket is placed on a coke charging hopper, the discharge gate is supported so as to be opened at a predetermined degree of opening, and to a second lowered position in which, when the red hot coke receiving apparatus is placed on the bucket truck, the outer frame portion is separated away from the discharge gate.