A coke oven flue bend pipe precise installation and positioning device and use method

Abstract

The present invention provides a device for accurately installing and positioning a flue bend of a coke oven and a method for using the device, comprising a pre-embedded fixing part and a hoisting part, characterized in that: the pre-embedded fixing part is arranged in the flue side wall for fixing the flue bend; the hoisting part is used for hoisting and positioning the flue bend. The beneficial effect of the present invention is to effectively solve the problems of the flue bend being eccentric after hoisting, the flue bend easily knocking against the fixing frame and refractory bricks when entering the reserved hole, the inconvenience of removing the hoist after installation, and the potential safety hazards.

Description

Technical Field

[0001] The invention belongs to the field of coke oven construction and installation, and in particular relates to a coke oven flue bend pipe precise installation and positioning device and a use method thereof. Background Art

[0002] The flue bends of modern coke ovens with a carbonization chamber height of 6.25 meters or more weigh several hundred kilograms and are made of cast iron. The construction technology used in the past first fixed the flue bends, then poured concrete, and finally laid the refractory materials inside the flue. This method cannot guarantee the construction quality and is not conducive to future construction production.

[0003] During hoisting, the flue bend was installed by tying and locking the upper eaves of the flue bend with a wire rope, and then hoisting it into place. The problem with this hoisting method is that the hoisting point is located at one or two points outside the upper eaves of the flue bend. After hoisting, the flue bend is eccentric and tilted. Installation holes are reserved for the branch flues during arch masonry. Due to stability limitations, the diameter of the reserved hole is only 80mm larger than the lower end of the flue bend. It is difficult to hoist the flue bend into the reserved hole, and it is easy to bump against the fixing frame and the refractory bricks around the reserved hole, causing safety hazards. In addition, when installed in place, the flue bend needs to fall on the channel steel or angle steel production surface of the fixing frame. There is a hoisting wire rope between the underside of the upper eaves of the flue bend and the surface of the steel fixing frame. After falling, the wire rope is squeezed and difficult to remove. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a precise installation and positioning device for a coke oven flue bend and a method for using the same, which effectively solves the problems of the flue bend being eccentric after lifting, the flue bend easily bumping against a fixing frame and refractory bricks when entering a reserved hole, the inconvenience of removing the lifting device after installation, and the potential safety hazards.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a precise installation and positioning device for a coke oven flue bend, comprising: embedded fixings and hanging parts, characterized in that: the embedded fixings are arranged in the side wall of the flue for fixing the flue bend; the hanging parts are used for hanging and positioning the flue bend.

[0006] Preferably, the embedded fixings include supporting steel bars and fixing frames, wherein the supporting steel bars are embedded in the flue side walls for supporting the fixing frames; and the fixing frames are arranged on the tops of the supporting steel bars for fixing the flue elbow.

[0007] Preferably, the lifting component includes a lifting crossarm, a concentric clamp and a steel wire rope. The lifting crossarm is arranged at the bottom of the flue bend to support the flue bend; the concentric clamp is arranged at the top of the flue bend to stabilize the flue bend; the bottom end of the steel wire rope is connected to the lifting crossarm, passes through the concentric clamp in the middle, and is connected to a crane at the top, so as to connect the lifting component and the crane.

[0008] Preferably, the lifting cross arm is also provided with a lifting ring connected to the steel wire rope, and the lifting ring is arranged at the midpoint of the lifting cross arm.

[0009] Preferably, the hoisting cross arm is further provided with a first stopper, which is arranged on both sides of the hoisting cross arm and is used to fix the hoisting cross arm.

[0010] Preferably, the concentric fixture comprises a frame, a second stop iron and a top screw locking rod, wherein the second stop iron is arranged at the bottom of the frame for fixing the concentric fixture; the top screw locking rod is arranged at both ends of the frame for locking the concentric fixture.

[0011] A method for using a coke oven flue bend precise installation and positioning device as claimed in claim 1, characterized in that: the embedded fixing frame fixes the position of the flue bend, and the lifting component cooperates with the crane to lift the flue bend.

[0012] Preferably, the lifting component includes a lifting crossarm, a concentric clamp and a steel wire rope. The lifting crossarm is arranged at the bottom of the flue bend to support the flue bend; the concentric clamp is arranged at the top of the flue bend to stabilize the flue bend; the bottom end of the steel wire rope is connected to the lifting crossarm, the middle passes through the concentric clamp, and the top end is connected to the crane to connect the lifting component and the crane. When in use, the lifting crossarm supports the bottom of the flue bend, the concentric clamp is clamped at the top of the flue bend, and the steel wire rope passes through the middle of the concentric clamp and is connected to the top of the lifting crossarm.

[0013] Preferably, the lifting crossarm is also provided with a lifting ring connected to the steel wire rope and a first stopper for fixing the lifting crossarm, the lifting ring is arranged at the midpoint of the lifting crossarm, and the first stopper is arranged on both sides of the lifting crossarm. When in use, the steel wire rope is connected to the lifting ring, and the first stopper is inserted into the lower pipe opening of the flue bend to prevent the crossarm from moving and causing unilateral falling off.

[0014] Preferably, the concentric clamp includes a frame, a second stop iron and a top screw locking rod. The second stop iron is arranged at the bottom of the frame to fix the center of the concentric clamp; the top screw locking rod is arranged at both ends of the frame to lock the concentric clamp. When in use, the second stop iron is inserted into the upper pipe opening of the flue elbow to ensure that the center position of the frame remains unchanged, and the top screw locking rod is tightened to prevent the bracket from falling off.

[0015] The use of the above solution solves the problems of eccentricity of the flue bend after lifting, easy collision of the flue bend with the fixing frame and refractory bricks when entering the reserved hole, inconvenience in removing the lifting device after installation, and easy safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the flue bend precision fixing frame according to the embodiment of the present invention

[0017] Figure 2 Schematic diagram of the flue elbow hanger according to the embodiment of the present invention

[0018] Figure 3 Schematic diagram of the cross arm iron parts of the embodiment of the present invention

[0019] Figure 4 Schematic diagram of concentric fixture parts according to an embodiment of the present invention

[0020] Figure 5 Schematic diagram of the cross section of the concentric fixture of the embodiment of the present invention

[0021] In the figure:

[0022] 1. Flue elbow 2. Hoisting cross arm iron 3. Concentric clamp

[0023] 4. Wire rope 5. Lifting ring 6. Flue side wall

[0024] 7. Support steel bar 8. Fixing frame 9. Top screw locking rod

[0025] 10. First stopper 11, second stopper 12, frame DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with embodiments and drawings:

[0027] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] In one embodiment of the present invention, Figure 1 Schematic diagram of the flue bend precision fixing frame and Figure 2 As shown in the plan schematic diagram of the flue bend hanger, a coke oven flue bend precise installation and positioning device includes: embedded fixing parts and hanging parts, the embedded fixing parts are arranged in the flue side wall 6, and are used to fix the flue bend 1; the hanging parts are used to hang and position the flue bend 1.

[0029] Specifically, the embedded fixings include supporting steel bars 7 and fixing frames 8. The supporting steel bars 7 are made of large-diameter threaded steel bars, embedded in the flue side wall 6, with an embedded length of not less than 300 mm, a steel bar diameter of not less than 25 mm, and an exposed height of 20 mm higher than the flue top elevation, for supporting the fixing frames 8; the fixing frames 8 are angle steels, welded to the top of the supporting steel bars 7, and a welding position 20 mm higher than the flue top elevation. The upper section of the flue bend 1 is just mounted on the fixing frames 8 to ensure the stability of the flue bend 1. A center line is carved on the surface of the angle steel to facilitate adjustment of the flue bend 1 to the center.

[0030] The lifting parts include a lifting cross arm 2, a concentric clamp 3 and a steel wire rope 4. Figure 3 As shown in the schematic diagram of the lifting crossarm parts, the lifting crossarm 2 is made of channel steel and placed at the bottom of the flue bend 1 to support the flue bend 1. A lifting ring 5 is also provided. The lifting ring 5 is made of round steel and welded to the midpoint of the lifting crossarm 2. A first stopper is also provided on the lifting crossarm 1. The first stopper is welded to both sides of the lifting crossarm 1 to prevent the lifting crossarm 1 from shifting and causing unilateral falling off.

[0031] like Figure 4 Concentric fixture parts diagram and Figure 5As shown in the cross-sectional schematic diagram of the concentric fixture, the concentric fixture 3 is cross-shaped, including a frame 12, a second stopper 11 and a top screw locking rod 9. The frame 12 is made of threaded steel with a diameter of 20 mm. The second stopper is welded to the bottom of the frame 12 and inserted into the upper opening of the flue bend 1 to form a mutually restrictive relationship with the inner wall of the upper opening to ensure that the center position of the cross concentric fixture 3 remains unchanged; the top screw locking rod 9 is a bolt, and 16 mm thick steel plates are used to transition the M20 nuts to the bracket at both ends of the frame 12. The bracket is positioned and locked at the lower opening of the flue bend with M20 bolts to prevent the concentric fixture 3 from escaping from the upper opening. The bottom end of the wire rope 4 is connected to the lifting ring 5, the middle passes through the center hole of the concentric fixture 3, and the top is connected to the crane for connecting the lifting parts and the crane.

[0032] When in use, first embed supporting steel bars 7 in the flue side wall, weld a fixing frame 8 on the top of the supporting steel bars 7, position the fixing frame 8 in advance according to the position of the flue bend 1, mark the four center points of the flue bend 1 on the fixing frame 8, and then start preparing for lifting.

[0033] When hoisting, first place the hoisting crossarm iron 2 at the lower end of the flue bend 1, place the concentric clamp 3 at the upper end of the flue bend 1, and use the second stopper 11 on the concentric clamp 3 to clamp the inner edge of the flue bend to ensure that the center hole of the concentric clamp 3 is concentric with the upper end of the flue bend 1. At the same time, use the top screw lock rod 9 to position and lock the concentric clamp 3 to prevent the concentric clamp 3 from escaping from the upper end of the bend. The wire rope 4 is inserted through the center hole of the concentric clamp 3 and connected to the lifting ring 5, and then the crane is started. After lifting, the flue bend 1 is installed vertically and stably. After installation, remove the hoist, pour concrete, and remove the fixing frame 8 after curing.

[0034] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A coke oven flue bend pipe precise installation and positioning device, comprising: The embedded fixing part and the hanging part are characterized in that: the embedded fixing part is arranged in the side wall of the flue for fixing the flue bend; the hanging part is used for hanging and positioning the flue bend; the hanging part includes a hanging cross arm, a concentric clamp and a steel wire rope, the hanging cross arm is arranged at the bottom of the flue bend for holding up the flue bend; the concentric clamp is arranged at the top of the flue bend for stabilizing the flue bend; the bottom end of the steel wire rope is connected to the hanging cross arm, and the middle passes through the The concentric clamp is connected to the crane at the top end and is used to connect the lifting part and the crane; the concentric clamp includes a frame, a second stop iron and a top screw locking rod, the second stop iron is arranged at the bottom of the frame and is used to fix the concentric clamp; the top screw locking rod is arranged at both ends of the frame and is used to lock the concentric clamp, and the concentric clamp is cross-shaped; the concentric clamp is arranged at the upper end of the flue elbow and is used to form a mutually restrictive relationship with the inner wall of the upper opening to ensure that the center position of the concentric clamp remains unchanged.

2. The device for accurately installing and positioning a coke oven flue bend according to claim 1, characterized in that: The embedded fixings include supporting steel bars and fixing frames. The supporting steel bars are embedded in the flue side walls for supporting the fixing frames. The fixing frames are arranged on the tops of the supporting steel bars for fixing the flue elbow.

3. The device for accurately installing and positioning a coke oven flue bend according to claim 1, characterized in that: The hoisting cross arm is also provided with a lifting ring connected with the steel wire rope, and the lifting ring is arranged at the midpoint of the hoisting cross arm.

4. A coke oven flue bend accurate installation and positioning device according to claim 1 or 3, characterized in that: The hoisting cross arm is also provided with a first stopper, which is arranged at both ends of the hoisting cross arm and is used to fix the hoisting cross arm.

5. A method for using the coke oven flue bend accurate installation and positioning device as claimed in claim 1, characterized in that: The embedded fixing frame fixes the position of the flue bend, and the hoisting member cooperates with the crane to hoist the flue bend.

6. The method for using the device for accurately installing and positioning a coke oven flue bend according to claim 5, characterized in that: The lifting component includes a lifting crossarm, a concentric clamp and a steel wire rope. The lifting crossarm is arranged at the bottom of the flue bend to support the flue bend; the concentric clamp is arranged at the top of the flue bend to stabilize the flue bend; the bottom end of the steel wire rope is connected to the lifting crossarm, the middle passes through the concentric clamp, and the top end is connected to the crane to connect the lifting component and the crane. When in use, the lifting crossarm supports the bottom of the flue bend, the concentric clamp is clamped at the top of the flue bend, and the steel wire rope passes through the middle of the concentric clamp and is connected to the top of the lifting crossarm.

7. The method for using the device for accurately installing and positioning a coke oven flue bend according to claim 6, characterized in that: The lifting crossarm is also provided with a lifting ring connected to the steel wire rope and a first stopper for fixing the lifting crossarm. The lifting ring is arranged at the midpoint of the lifting crossarm, and the first stopper is arranged at both ends of the lifting crossarm. When in use, the steel wire rope is connected to the lifting ring, and the first stopper is inserted into the lower pipe opening of the flue bend to prevent the crossarm from moving and causing one side to fall off.

8. The method for using the device for accurately installing and positioning a coke oven flue bend according to claim 6, characterized in that: The concentric fixture includes a frame, a second stop iron and a top screw locking rod. The second stop iron is arranged at the bottom of the frame for fixing the center of the concentric fixture. The top screw locking rod is arranged at both ends of the frame for locking the concentric fixture. When in use, the second stop iron is inserted into the upper pipe opening of the flue elbow to ensure that the center position of the frame remains unchanged, and the top screw locking rod is tightened to prevent the bracket from falling off.

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