A type of coke oven door frame disassembly clamp for maintenance

Abstract

This application relates to a coke oven door frame disassembly fixture for coke oven maintenance, belonging to the technical field of coke oven maintenance tools. To solve the problem of complex disassembly of the coke oven door frame, it includes a fixture body arranged in the inner groove of the coke oven door frame. The fixture body includes two sets of outer frames, two sets of inner rods, and connecting rods. The two sets of inner rods are respectively connected to the bottom ends of corresponding outer frames, and the length of the inner rods is adapted to the length of the inner groove of the coke oven door frame. The connecting rods are all connected between the two sets of outer frames. Opposing plate assemblies are symmetrically arranged on both sides of the coke oven door frame. Each set of outer frames has a positioning plate at its bottom end for cooperating with the corresponding opposing plate assembly. A pin is provided between the positioning plate and the opposing plate assembly for connection. This application effectively prevents damage to spare parts such as the coke oven frame due to the large weight of the coke oven door and excessive traction force, greatly improving the efficiency of maintenance operations.

Description

Technical Field

[0001] This application relates to the field of coke oven maintenance tools, and in particular to a coke oven door frame disassembly clamp for coke oven maintenance. Background Technology

[0002] A coke oven is an industrial kiln for producing coke. Its carbonization chamber receives coal and isolates it from air for dry distillation. At both ends are furnace door frames embedded in the furnace body. Cast iron furnace doors lined with refractory material are assembled on the furnace frames to seal the furnace body.

[0003] During normal coke oven production, the hook bolt lugs of the furnace door frame are fixed to the protective plate with specific bolts, and the furnace door is hung on the hook of the furnace door frame by the furnace door horizontal bolt, without the need for hinges. When repairing damaged or aging furnace door frames, it is difficult to directly lift and remove them in a conventional manner because the frame has no direct lifting anchor points and uses embedded fixing. The commonly used method is to use the furnace door as an intermediate carrier, utilizing its cooperation with the furnace door frame, and to complete the lifting, hook bolt removal, horizontal movement and backward movement of the door trolley using a coke pusher car or coke catcher car to remove the furnace door and furnace door frame together. However, this method is complicated due to the large weight of the furnace door, the large traction force, and the stress concentration during horizontal movement, which makes the disassembly and installation of the furnace door frame complicated and prone to problems such as hook deformation and breakage, and furnace door frame damage and deformation. Utility Model Content

[0004] To address the complexities of disassembling furnace door frames, this application provides a furnace door frame disassembly fixture for coke oven maintenance.

[0005] The technical solution for disassembling a coke oven door frame for maintenance provided in this application is as follows:

[0006] A coke oven door frame disassembly fixture for maintenance includes a fixture body arranged in the inner groove of the door frame. The fixture body includes two sets of outer frames, two sets of inner rods, and connecting rods. The two sets of inner rods are respectively connected to the bottom end of the corresponding outer frames. The length of the inner rods is adapted to the length of the inner groove of the door frame. The connecting rods are all connected between the two sets of outer frames. Opposing plate groups are symmetrically arranged on both sides of the door frame. The bottom end of each set of outer frames is respectively provided with a positioning plate for cooperating with the corresponding opposing plate group. A pin is provided between the positioning plate and the opposing plate group for connection.

[0007] Because removing the furnace door and frame together is a complex process due to the large mass and traction of the furnace door, stress concentration during translation, and the risk of hook deformation and breakage, as well as damage and deformation of the furnace door frame, the above-mentioned technical solution includes a clamp body installed in the inner groove of the furnace door frame. The clamp body includes two sets of outer frames, two sets of inner rods, and connecting rods. The inner rods are adapted to the inner groove of the furnace door frame. The opposing plate assemblies are welded to both sides of the furnace door frame, and a positioning plate is welded to the bottom of the outer frame. The positioning plate is connected to the opposing plate assemblies by a pin.

[0008] When the aluminum door frame needs to be disassembled and repaired, the clamp body is embedded in the inner groove. At this time, the inner rod is vertically inserted into the inner grooves on both sides of the furnace door frame to ensure that the inner rod is completely in contact with the bottom surface of the inner groove. The positioning plate at the bottom of the outer frame is inserted into the opposing plate assembly, and the pin is inserted through the positioning plate and the opposing plate assembly to complete the fixing of the clamp to the furnace door frame. Use lifting straps or wire ropes to tie the middle of the crossbar and connect it to the traction hook of the door removal platform of the coke pusher car / coke quencher car to completely remove the furnace door frame for inspection.

[0009] By configuring the clamp body, opposing plate, positioning plate assembly, and pin shaft, the inner rod of the clamp body fits into the inner groove of the furnace door frame, and the positioning plate at the bottom of the outer frame is connected to the pin shaft of the opposing plate, forming a multi-point fixing structure. This evenly distributes the traction force to the entire length of the furnace door frame, effectively avoiding problems such as hook deformation and breakage and furnace door frame damage caused by stress concentration in traditional methods. The clamp forms a unified force-bearing whole with the furnace door frame through the crossbar, outer frame, and opposing plate, replacing the original complex process that relied on the furnace door as an intermediate carrier. This eliminates the phenomenon of easy damage to spare parts such as the furnace frame due to the large mass of the furnace door and excessive traction force, greatly improving the efficiency of maintenance operations.

[0010] Optionally, there are multiple sets of opposing plates on both sides of the furnace door frame. These multiple sets of opposing plates are arranged at equal intervals along the length of the furnace door frame, and the number of positioning plates is the same as the number of opposing plates.

[0011] By adopting the above technical solution, there are multiple sets of opposing plate groups on both sides of the furnace door frame, and the number of positioning plates is the same as the number of opposing plate groups. By setting the number of opposing plate groups and positioning plates, multiple opposing plate groups are equidistantly distributed with corresponding number of positioning plates, which can form multiple evenly distributed connection nodes in the length direction of the furnace door frame. This evenly distributes the traction force during disassembly to each node, effectively avoiding the stress concentration problem caused by traditional single-point or local connection, and further reducing the risk of furnace door frame deformation and frame damage.

[0012] Optionally, each of the opposing plate groups includes two opposing plates, and a positioning plate insertion area is formed between the two opposing plates. The opposing plates are provided with a plurality of positioning holes at equal intervals along the height direction.

[0013] By adopting the above technical solution, an area for inserting the positioning plate is formed between the two pairs of upright plates, and several positioning holes are opened through the surface of the upright plates. Through the setting of the two pairs of upright plates and multiple positioning holes, the combination structure of multiple sets of two opposing plates is adopted to improve the contact effect and fixing function with the positioning plate. The equidistantly distributed positioning holes can flexibly adjust the connection position according to the actual size of the furnace door frame, which significantly improves the adaptability of the fixture to furnace door frames of different specifications.

[0014] Optionally, a base plate is provided at the bottom end of any of the opposing plate groups, and the base plate and the opposing plate group form an inverted T-shaped structure.

[0015] By adopting the above technical solution, the base plate is welded and fixed to the bottom end of the opposing plate assembly, and the base plate and the opposing plate assembly form an inverted T-shaped structure. Through the setting of the base plate, the inverted T-shaped structure significantly enhances the structural strength of the bottom of the opposing plate assembly, effectively resists the bending moment generated by the traction force during disassembly, and avoids deformation or breakage of the bottom end of the opposing plate assembly due to stress concentration.

[0016] Optionally, a through hole is provided through the base plate.

[0017] By adopting the above technical solution, through holes are opened through the bottom plate; through holes provide additional fixing points for the furnace door frame connection, adapting to the adjustment needs of complex on-site working conditions.

[0018] Optionally, the top of both sets of outer frames are provided with two crossbars, which are respectively located at both ends of the outer frame in the length direction.

[0019] By adopting the above technical solution, the crossbar is welded and fixed to the top of the outer frame; by setting the crossbar, the crossbar serves as the traction force point at the top of the clamp, which significantly enhances the connection rigidity between the outer frames, avoids deformation of the outer frame due to uneven traction force during disassembly, simplifies the connection operation of the traction equipment, and improves work efficiency.

[0020] Optionally, the number of connecting rods is multiple sets, and the multiple sets of connecting rods are arranged at equal intervals along the length direction of the outer frame.

[0021] By adopting the above technical solution, the number of connecting rods is multiple sets; through the setting of multiple sets of connecting rods, multiple sets of connecting rods form uniform lateral support, significantly enhancing the structural rigidity between the outer frames, effectively resisting the bending deformation caused by the traction force during disassembly, ensuring that the outer frame remains in a parallel state, avoiding the risk of outer frame breakage caused by local stress concentration, and ensuring the safety of the disassembly process.

[0022] Optionally, the outer frame, inner rod, and connecting rod are all made of square steel, and the inner rod and connecting rod are hollow structures.

[0023] By adopting the above technical solution, the outer frame, inner rods and connecting rods are all made of square steel, and the inner rods and connecting rods are hollow structures. Through the selection of materials and structures, square steel has the characteristics of high strength and corrosion resistance, ensuring that the fixture maintains structural stability in the high temperature and high traction environment of the coke oven. At the same time, the hollow structure ensures the bending resistance of the square steel section while reducing the weight of the fixture, making it easier for operators to quickly move and adjust it.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up the clamp body, the opposing plate, the positioning plate and the pin, the inner rod of the clamp body fits into the inner groove of the furnace door frame, and the positioning plate at the bottom of the outer frame is connected to the pin of the opposing plate to form a multi-point fixing structure. This distributes the traction force evenly to the entire length of the furnace door frame, effectively avoiding problems such as hook deformation and breakage and furnace door frame damage caused by stress concentration in the traditional method. The clamp forms a unified force-bearing whole with the furnace door frame through the crossbar-outer frame-opposing plate, replacing the original complex process that relied on the furnace door as an intermediate carrier. This eliminates the phenomenon that spare parts such as the furnace frame are easily damaged due to the large weight of the furnace door and the excessive traction force, and greatly improves the efficiency of maintenance operations.

[0026] 2. By setting two pairs of upright plates and multiple positioning holes, a combination structure of multiple sets of two pairs of upright plates is adopted to improve the contact effect and fixing function with the positioning plates. The equidistantly distributed positioning holes can flexibly adjust the connection position according to the actual size of the furnace door frame, significantly improving the adaptability of the fixture to furnace door frames of different specifications.

[0027] 3. By setting up the crossbar, which serves as the traction force point at the top of the clamp, the connection rigidity between the outer frames is significantly enhanced, avoiding deformation of the outer frame due to uneven traction force during disassembly. At the same time, it simplifies the connection operation of the traction equipment and improves work efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a coke oven door frame disassembly fixture for coke oven maintenance, as described in an embodiment of this application.

[0029] Figure 2 This is a structural schematic diagram illustrating the fixture body in the embodiments of this application.

[0030] Figure 3 This is a structural schematic diagram used in the embodiments of this application to illustrate the opposing plate and the base plate.

[0031] Figure 4 This is a structural schematic diagram illustrating the positioning plate and the pin in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Furnace door frame; 11. Inner groove; 12. Bottom plate; 13. Opposing plate; 131. Positioning hole; 2. Fixture body; 21. Outer frame; 22. Inner rod; 23. Connecting rod; 24. Crossbar; 25. Positioning plate; 26. Pin. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a coke oven door frame disassembly clamp for coke oven maintenance. (Refer to...) Figure 1 and Figure 2The coke oven door frame disassembly fixture for maintenance includes a fixture body 2. In this embodiment, the fixture body 2 is installed in the inner groove 11 of the coke oven door frame 1. The aluminum door frame has an inner groove 11, which can be designed to match the fixture body 2.

[0035] Reference Figure 2 The clamp body 2 includes two sets of outer frames 21, two sets of inner rods 22, and connecting rods 23. The two sets of inner rods 22 are welded and fixed to the bottom end of the corresponding outer frames 21. The length of the inner rods 22 is adapted to the length of the inner groove 11 of the furnace door frame 1. In this embodiment, there are multiple sets of connecting rods 23. The multiple sets of connecting rods 23 are arranged at equal intervals along the length direction of the outer frames 21. The two ends of each connecting rod 23 are welded and fixed between the two sets of outer frames 21. The multiple sets of connecting rods 23 form uniform lateral support, which significantly enhances the structural rigidity between the outer frames 21, effectively resists the bending deformation caused by the traction force during disassembly, ensures that the outer frames 21 remain parallel, avoids the risk of the outer frames 21 breaking due to local stress concentration, and ensures the safety of the disassembly process.

[0036] Reference Figure 2 The outer frame 21, inner rod 22 and connecting rod 23 are all made of square steel. The inner rod 22 and connecting rod 23 are hollow structures. Square steel has high strength and corrosion resistance, which ensures that the fixture maintains structural stability in the high temperature and high traction coke oven environment. At the same time, the hollow structure ensures the bending resistance of the square steel section while reducing the weight of the fixture, making it easy for operators to quickly move and adjust it.

[0037] Reference Figure 2 and Figure 3 Two crossbars 24 are welded to the top of the two outer frames 21. Each crossbar 24 is in the shape of a "door". The two crossbars 24 are respectively set at both ends of the length direction of the outer frame 21. The crossbars 24 serve as the traction force points at the top of the clamp, which significantly enhances the connection rigidity between the outer frames 21, avoids deformation of the outer frame 21 due to uneven traction force during disassembly, simplifies the connection operation of the traction equipment, and improves the work efficiency.

[0038] Reference Figure 2 and Figure 3 The furnace door frame 1 has symmetrically welded opposing plate groups on both sides. There are multiple opposing plate groups on both sides of the furnace door frame 1. The multiple opposing plate groups are arranged at equal intervals along the length of the furnace door frame 1. Each outer frame 21 has a positioning plate 25 welded and fixed at its bottom end for cooperating with the corresponding opposing plate group. The number of positioning plates 25 is the same as the number of opposing plate groups.

[0039] Reference Figure 3 and Figure 4Each pair of opposing plates includes two opposing plates 13, with a positioning plate 25 inserted between the two opposing plates 13. At the same time, the opposing plates 13 are provided with a plurality of positioning holes 131 at equal intervals along the height direction. A pin 26 is installed between the positioning plate 25 and the opposing plates 13. In this embodiment, the positioning plate 25 is provided with a through hole for the pin 26 to pass through. The positioning plate 25 at the bottom of the outer frame 21 is inserted between the two opposing plates 13. According to the actual size of the furnace door frame 1, a suitable positioning hole 131 is selected, and the pin 26 is inserted through the positioning hole 131 of the positioning plate 25 and the opposing plate 13 to complete the fixing of the clamp to the furnace door frame 1.

[0040] Reference Figure 3 A base plate 12 is welded and fixed to the bottom end of any of the opposing plate groups. The base plate 12 and the opposing plate groups form an inverted T-shaped structure. A through hole is opened through the base plate 12. The inverted T-shaped structure significantly enhances the structural strength of the bottom of the opposing plate 13, effectively resists the bending moment generated by the traction force during disassembly, and avoids deformation or breakage of the bottom end of the opposing plate 13 due to stress concentration.

[0041] The implementation principle of a coke oven door frame disassembly fixture according to an embodiment of this application is as follows: When the aluminum door frame needs to be disassembled and repaired, the fixture body 2 is embedded in the inner groove 11. At this time, the inner rod 22 is vertically inserted into the inner groove 11 on both sides of the door frame 1, ensuring that the inner rod 22 is completely in contact with the bottom surface of the inner groove 11. The positioning plate 25 at the bottom of the outer frame 21 is inserted between the two opposing plates 13. According to the actual size of the door frame 1, a suitable positioning hole 131 is selected (for short-sized door frames 1, a positioning hole near the bottom is selected to reduce the traction arm; for long-sized door frames 1, a positioning hole 131 in the middle and upper part is selected to enhance the bending resistance). The pin 26 is inserted, passing through the positioning hole 131 of the positioning plate 25 and the opposing plate 13, thus completing the fixing of the fixture to the door frame 1. The middle part of the crossbar 24 is tied with a hoisting strap or wire rope and connected to the traction hook of the door removal platform of the coke pusher / coke queuing car to completely remove the door frame 1 for inspection.

[0042] By setting up the clamp body 2, the opposing plate 13, the positioning plate 25 and the pin 26, the inner rod 22 of the clamp body 2 is adapted to fit into the inner groove 11 of the furnace door frame 1, and the positioning plate 25 at the bottom of the outer frame 21 is connected to the pin 26 of the opposing plate 13 to form a multi-point fixing structure, which evenly distributes the traction force to the entire length of the furnace door frame 1, effectively avoiding problems such as hook deformation and breakage and furnace door frame 1 damage caused by stress concentration in the traditional method. The clamp forms a unified force-bearing whole with the furnace door frame 1 through the crossbar 24-outer frame 21-opposing plate 13, replacing the original complex process of relying on the furnace door as an intermediate carrier, eliminating the phenomenon of easy damage to spare parts such as the furnace frame due to the large mass of the furnace door and excessive traction force, and greatly improving the efficiency of maintenance operations.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coke oven door frame dismounting jig for coke oven repair, comprising a jig body arranged in an inner groove of a door frame, characterized in that: The fixture body includes two sets of outer frames, two sets of inner rods, and connecting rods. The two sets of inner rods are respectively connected to the bottom end of the corresponding outer frames. The length of the inner rods is adapted to the length of the inner groove of the furnace door frame. The connecting rods are all connected between the two sets of outer frames. Opposing plate groups are symmetrically arranged on both sides of the furnace door frame. The bottom end of each set of outer frames is respectively provided with a positioning plate for cooperating with the corresponding opposing plate group. A pin is provided between the positioning plate and the opposing plate group for connection.

2. The coke oven door frame dismounting clamp for maintenance of a coke oven according to claim 1, characterized in that: The number of opposing plate groups on both sides of the furnace door frame is multiple, and the multiple opposing plate groups are arranged at equal intervals along the length direction of the furnace door frame, and the number of positioning plates is the same as the number of opposing plate groups.

3. The coke oven door frame dismounting clamp for maintenance of a coke oven according to claim 2, characterized in that: Each of the opposing plate groups includes two opposing plates, and a positioning plate insertion area is formed between the two opposing plates. The opposing plates are provided with a plurality of positioning holes at equal intervals along the height direction.

4. The coke oven door frame dismounting clamp for maintenance of a coke oven according to claim 2, characterized in that: Each of the opposing plate groups is provided with a base plate at its bottom end, and the base plate and the opposing plate group form an inverted T-shaped structure.

5. The coke oven door frame dismounting clamp for maintenance of a coke oven according to claim 4, characterized in that: A through hole is provided on the base plate.

6. The door frame dismounting clamp for maintenance of coke oven according to claim 1, characterized in that: The top of both sets of outer frames are provided with two crossbars, which are respectively located at both ends of the length direction of the outer frame.

7. The coke oven door frame dismounting clamp for maintenance of a coke oven according to claim 1, characterized in that: The number of connecting rods is multiple sets, and the multiple sets of connecting rods are arranged at equal intervals along the length direction of the outer frame.

8. The door frame dismounting clamp for maintenance of a coke oven according to claim 7, characterized in that: The outer frame, inner rod, and connecting rod are all made of square steel, and the inner rod and connecting rod are hollow structures.

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