A coke oven door frame dismounting clamp for coke oven maintenance and a use method thereof

Abstract

The present application relates to coke oven maintenance tool technical field, mainly disclose a kind of coke oven maintenance oven door frame dismounting clamp and use method, the clamp includes clamp body and fixed pin, clamp body includes vertical frame, connecting plate, cross bolt and door bolt, vertical frame is provided with cross support between interval, at least one pair of connecting plate is provided in the upper and lower ends of vertical frame, the position of connecting plate corresponds with the position of the hook head bolt lug of oven door frame, cross support is provided on the upper end and lower end of vertical frame Door bolt, the position of two door bolts corresponds with the position of the oil cylinder on the door taking trolley, each cross bolt is provided on the vertical frame below the door bolt, the distance between two cross bolts corresponds with the distance between the upper and lower big hook on the door taking trolley, connecting plate is provided with fixed trunnion, fixed pin is fixed on the hook head bolt lug of oven door frame by fixed pin, the clamp is light, simple structure, easy to make, the use method greatly improves the overhaul efficiency.

Description

Technical Field

[0001] This invention relates to the field of coke oven maintenance tools, specifically a coke oven door frame disassembly clamp and its usage method. Background Technology

[0002] A coke oven is an industrial kiln for producing coke. The carbonization chamber is the furnace chamber that receives coal and performs dry distillation in the absence of air. At both ends of the carbonization chamber are furnace door frames embedded in the furnace body. Cast iron furnace doors lined with refractory material are fitted onto the furnace frames to seal the furnace body and isolate it from air. During normal coke oven production, the hook bolt lugs of the coke oven door frame are fixed to the coke oven protective plate using T-bolts or hook bolts. The coke oven door is hung on hooks on the furnace door frame via door bolts, without the need for hinges. When the furnace door frame is damaged or aged and requires repair, the furnace door usually needs to be removed before proceeding to the next step. Because the furnace door frame structure is relatively simple, such as... Figure 3 As shown (the hooks on both sides of the furnace door frame are not drawn), there are no anchor points on the frame for direct mounting of lifting equipment, making direct lifting difficult. Furthermore, the furnace door frame is fixed to both ends of the coke oven in the carbonization chamber using an embedded method, making it impossible to remove using conventional methods. The commonly used method is to use the furnace door as an intermediate carrier, utilizing the cooperation between the furnace door and the furnace door frame. The lifting action is completed by a coke pusher car or coke catcher car door retrieval platform. Then, all the hook bolts on both sides of the furnace frame are removed, and the door retrieval platform is moved backward to remove the furnace door and furnace door frame together. Chinese invention patent CN206799530U discloses a clamp for quickly, safely, and reliably removing the entire furnace door frame using a door removal machine. While this method can remove the furnace door frame, the large mass of the furnace door and the high traction force mean that the stress is mainly concentrated on the hooks on both sides of the furnace door frame during translation. In actual operation, the disassembly and installation of the furnace door frame is complicated, and the furnace door frame hooks are prone to deformation and breakage, and the furnace door frame is easily damaged and deformed. Summary of the Invention

[0003] The purpose of this invention is to provide a coke oven door frame disassembly fixture and its usage method for coke oven maintenance. The coke oven door frame disassembly fixture provided by this invention is lightweight, simple in structure, and easy to manufacture. It replaces the original method of relying on the oven door as an intermediate tool, and eliminates the phenomenon that spare parts such as the oven frame are easily damaged due to the large weight of the oven door and excessive traction force, thus greatly improving the efficiency of maintenance operations.

[0004] To achieve the above objectives, the technical solution of this invention is as follows: a coke oven door frame disassembly fixture for maintenance, comprising a fixture body and fixing pins. The fixture body includes a vertical frame, connecting plates, horizontal bolts, and door bolts. Several horizontal supports are spaced apart between the vertical frames. At least one pair of connecting plates is provided at the upper outer end and lower outer end of the vertical frame in the width direction, and the pair of connecting plates are symmetrically arranged along the centerline of the vertical frame in the width direction. The position of the connecting plates corresponds to the position of the hook bolt lug of the door frame. Door bolts are provided on the upper and lower horizontal supports in the length direction of the vertical frame, and the positions of the two door bolts correspond to the positions of the hydraulic cylinders on the door retrieval trolley. A horizontal bolt is provided on each vertical frame below the door bolts, and the distance between the two horizontal bolts corresponds to the distance between the upper and lower hooks on the door retrieval trolley. A fixing trunnion is provided on the connecting plate, and the fixing trunnion is fixed to the hook bolt lug of the door frame by fixing pins.

[0005] Furthermore, the length and width of the vertical frame of the clamp body are both smaller than the length and width of the furnace door frame, so as to fit more flexibly with the furnace door frame and not affect the disassembly of the furnace door frame due to being too long or too wide.

[0006] Furthermore, the vertical frame consists of two parallel square steel bars, with a horizontal support positioned between the two square steel bars, and the horizontal support is also made of square steel.

[0007] Furthermore, there should be at least two horizontal supports, preferably four or more.

[0008] Furthermore, the bolt is made of round steel, with one end connected to the middle of the horizontal support, and the other end of the bolt is provided with a square steel plate.

[0009] Furthermore, the horizontal bolt comprises two vertical round steel bars and a horizontal round steel bar welded to the top of the two vertical round steel bars, with the bottom ends of the two vertical round steel bars respectively spanning the upper surfaces of the two square steel bars of the vertical frame.

[0010] Furthermore, at least one pair of connecting plates are symmetrically arranged at the outer end or the middle of the outer end of the vertical frame in the width direction, and the position of the connecting plates corresponds to the position of the hook bolt lug in the middle of the furnace door frame.

[0011] Furthermore, the fixing trunnion is welded to the outside of the connecting plate, and the end of the fixing trunnion is provided with a pin hole. The pin hole cooperates with the fixing pin. When the fixing trunnion passes through the hook bolt lug, the pin hole at the end of the fixing trunnion is fully exposed, and the fixing pin is inserted into the pin hole to achieve a firm fit.

[0012] Furthermore, the center-to-center spacing of the pin holes in the horizontal and vertical directions is consistent with the center-to-center spacing of the corresponding hook bolt lugs on the furnace frame, so as to facilitate better installation during the fitting process;

[0013] The steps for dismantling the furnace door frame using the above technical solution are as follows: First, install the clamp body of this invention onto the door removal trolley of the coke pusher or coke quencher car. The horizontal bolt engages with the upper and lower hooks of the door removal trolley, and the door bolt pressing cylinder of the door removal trolley engages tightly with the door bolt. Under the action of the door bolt hooks and the door bolt pressing cylinder, the clamp body is firmly fixed to the door removal trolley. After fixing, remove the hook bolts around the furnace door frame that need to be replaced. The door removal trolley moves forward, and the fixing trunnion is inserted into the corresponding hook bolt lug gap. When the vertical frame is tightly fitted with the outer surface of the furnace door frame, the pin holes of the fixing trunnion are fully exposed above the hook bolt lugs. At this point, the fixing pin is inserted into the fixing trunnion pin hole for positioning and fixing. After all fixing is complete, the door removal trolley reverses, and the furnace door frame is safely dismantled.

[0014] Installation steps for the furnace door frame: First, install the clamp body of this invention onto the door-retrieving trolley of the coke pusher or coke quencher car. The horizontal bolt engages with the upper and lower hooks of the door-retrieving trolley, and the door bolt-pressing cylinder of the door-retrieving trolley engages tightly with the door bolt. Under the action of the door bolt hooks and the door bolt-pressing cylinder, the clamp body is firmly fixed to the door-retrieving trolley. Next, install the new furnace door frame onto the clamp body. Move the door-retrieving trolley to embed the furnace door frame into the carbonization chamber furnace body. At this point, secure all the hook bolt lugs around the new furnace door frame with hook bolts. After securing, remove the fixing pins, and retract the door-retrieving trolley to complete the installation.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Compared with the prior art, the coke oven door frame disassembly fixture provided by the present invention is lightweight, simple in structure and easy to manufacture. It replaces the original method of relying on the furnace door as an intermediate tool, and eliminates the phenomenon that spare parts such as the furnace frame are easily damaged due to the large weight of the furnace door and excessive traction force, thus greatly improving the efficiency of maintenance operations.

[0017] 2. Compared with the prior art, the coke oven door frame disassembly fixture provided by the present invention is ingeniously designed, can completely fit the furnace frame, and can also cooperate well with the door trolley, so as to easily realize disassembly, installation, adjustment and other work.

[0018] 3. Compared with the prior art, the coke oven door frame disassembly fixture provided by the present invention can be adjusted to realize the disassembly and installation of different types of coke oven door frames, which is convenient and quick. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the connecting plate structure of the present invention.

[0022] Figure 3 This is a reference diagram showing the usage state of the present invention.

[0023] Figure 4 This is a schematic diagram of the fixing pin of the present invention.

[0024] In the figure: 1. Fixture body, 101. Connecting plate, 1011. Fixing trunnion, 102. Vertical frame, 103. Horizontal support, 104. Horizontal bolt, 105. Door bolt, 2. Fixing pin, 3. Furnace door frame, 301. Hook bolt lug. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1-4 As shown, a coke oven door frame disassembly clamp for maintenance includes a clamp body 1 and a fixing pin 2. The clamp body 1 includes a vertical frame 102, a connecting plate 101, a horizontal bolt 104, and a door bolt 105. Several horizontal supports 103 are spaced apart between the vertical frames 102. Specifically, as shown... Figure 1As shown, the vertical frame 102 consists of two parallel square steel bars, and the horizontal support 103 is positioned between the two square steel bars. The horizontal support 103 is also made of square steel, and there are at least two horizontal supports 103, preferably four or more. In this embodiment, five horizontal supports are used. At least one pair of connecting plates 101 are provided at the upper outer end and lower outer end of the vertical frame 102 in the width direction, and the pair of connecting plates 101 are symmetrically arranged along the centerline of the width direction of the vertical frame 102. The position of the connecting plates 101 is related to the position of the hook bolt lug 301 of the furnace door frame 3. Correspondingly, this arrangement meets the most basic requirements for the installation of the furnace door frame 3. A connecting plate 101 is welded to each of the four corners of the vertical frame 102, corresponding to the four corners of the furnace door frame 3. Door bolts 105 are installed on the uppermost and lowermost horizontal supports 103 along the length of the vertical frame 102. The door bolts 105 are made of round steel, with one end connected to the middle of the horizontal support 103, and the other end fitted with a square steel plate. The positions of the two door bolts 105 correspond to the positions of the hydraulic cylinders on the door trolley. Each of the vertical frames 102 below the door bolt 105 is provided with a horizontal bolt 104. Each horizontal bolt 104 is welded together from two vertical round steel bars and a horizontal round steel bar placed at the top of the two vertical round steel bars. The bottom ends of the two vertical round steel bars respectively cross the upper end faces of the two square steel bars of the vertical frame 102. The distance between the two horizontal bolts 104 corresponds to the distance between the upper and lower hooks on the door trolley. The connecting plate 101 is provided with a fixing trunnion 1011, which is fixed to the furnace door by a fixing pin 2. On the hook bolt lug 301 of frame 3, the fixing trunnion 1011 is welded to the outer side of the connecting plate 101. The end of the fixing trunnion 1011 is provided with a pin hole, which mates with the fixing pin 2. When the fixing trunnion 1011 passes through the hook bolt lug 301, the pin hole at the end of the fixing trunnion 1011 is fully exposed, and the fixing pin 2 is inserted into the pin hole to achieve a firm fit. The horizontal and vertical center distances of the pin holes are consistent with the horizontal and vertical center distances of the corresponding hook bolt lugs 301 on the furnace frame, so as to facilitate better installation during the fit process.

[0028] The length and width of the vertical frame 102 of the clamp body 1 are both smaller than the length and width of the furnace door frame 3, so as to fit more flexibly with the furnace door frame 3 and not affect the disassembly of the furnace door frame 3 due to being too long or too wide.

[0029] Example 2

[0030] Based on Embodiment 1, a further improvement is that, in order to enhance the supporting strength of the vertical frame 102 and make the force between the furnace door frame 3 and the connecting plate 101 of the vertical frame 102 more even and balanced, at least one pair of connecting plates 101 are symmetrically arranged at the outer end or the middle of the outer end of the vertical frame 102 in the width direction. That is, the position of the connecting plate 101 also corresponds to the position of the hook bolt lug 301 in the middle of the furnace door frame 3.

[0031] The steps for dismantling the furnace door frame 3 using the above technical solution are as follows: First, install the clamp body 1 of this invention onto the door removal platform of the coke pusher or coke catcher. The horizontal bolt 104 engages with the upper and lower hooks of the door removal platform, and the door bolt cylinder of the door removal platform engages tightly with the door bolt 105. Under the action of the hooks and the cylinder, the clamp body 1 is firmly fixed to the door removal platform. After fixing, remove the hook bolts around the furnace door frame 3 that need to be replaced. The door removal platform moves forward, and the fixing trunnion 1011 is inserted into the gap of the corresponding hook bolt lug 301. When the vertical frame 102 is tightly fitted to the outer surface of the furnace door frame 3, the pin hole of the fixing trunnion 1011 is fully exposed above the hook bolt lug 301. At this point, the fixing pin 2 is inserted into the pin hole of the fixing trunnion 1011 for positioning and fixing. After all fixing is complete, the door removal platform moves backward, safely removing the furnace door frame 3.

[0032] Installation steps for furnace door frame 3: First, install the clamp body 1 of this invention onto the door-retrieving platform of the coke pusher or coke catcher. The horizontal bolt 104 engages with the upper and lower hooks of the door-retrieving platform, and the door bolt cylinder of the door-retrieving platform tightly engages with the door bolt 105. Under the action of the hooks and the cylinder, the clamp body 1 is firmly fixed to the door-retrieving platform. Next, install the new furnace door frame 3 onto the clamp body. Move the door-retrieving platform to embed the furnace door frame 3 into the carbonization chamber furnace body. At this point, secure all the hook bolt lugs 301 around the new furnace door frame 3 with hook bolts. After securing, remove the fixing pins 2, and retract the door-retrieving platform to complete the installation.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coke oven door frame disassembly clamp for coke oven maintenance, characterized in that: The fixture includes a clamp body (1) and a fixing pin (2). The clamp body (1) includes a vertical frame (102), a connecting plate (101), a horizontal bolt (104), and a door bolt (105). Several horizontal supports (103) are spaced apart between the vertical frames (102). At least one pair of connecting plates (101) is provided at the upper outer end and the lower outer end of the vertical frame (102) in the width direction. The pair of connecting plates (101) are symmetrically arranged along the center line of the width direction of the vertical frame (102). At least one pair of connecting plates (101) is also symmetrically arranged at the outer end or the middle of the outer end in the width direction of the vertical frame (102). The position of the connecting plate (101) corresponds to the position of the hook bolt lug (301) of the furnace door frame (3). 02) Door bolts (105) are provided on the upper and lower horizontal supports (103) in the length direction. The positions of the two door bolts (105) correspond to the positions of the oil cylinders on the door retrieval trolley. A horizontal bolt (104) is provided on the vertical frame (102) below the door bolts (105). The distance between the two horizontal bolts (104) corresponds to the distance between the upper and lower hooks on the door retrieval trolley. A fixing trunnion (1011) is provided on the connecting plate (101). The fixing trunnion (1011) is welded to the outer side of the connecting plate (101). A pin hole is provided at the end of the fixing trunnion (1011). The pin hole cooperates with the fixing pin (2). The fixing trunnion (1011) is fixed to the hook bolt lug (301) of the furnace door frame (3) by the fixing pin (2).

2. The coke oven door frame disassembly clamp for maintenance according to claim 1, characterized in that: The length and width of the vertical frame (102) of the fixture body (1) are both smaller than the length and width of the furnace door frame (3).

3. The coke oven door frame disassembly clamp for maintenance according to claim 1, characterized in that: The vertical frame (102) consists of two parallel square steel bars, and the horizontal support (103) is located between the two square steel bars. The material of the horizontal support (103) is also square steel.

4. A coke oven door frame disassembly clamp for maintenance according to claim 3, characterized in that: There are at least two horizontal supports (103).

5. A coke oven door frame disassembly clamp according to any one of claims 1-4, characterized in that: The bolt (105) is a round steel bar. One end of the bolt (105) is connected to the middle of the horizontal support (103), and the other end of the bolt (105) is provided with a square steel plate.

6. A coke oven door frame disassembly clamp for maintenance according to claim 5, characterized in that: The horizontal bolt (104) is made of two vertical round steel bars and a horizontal round steel bar set at the top of the two vertical round steel bars. The bottom ends of the two vertical round steel bars cross the upper surfaces of the two square steel bars of the vertical frame (102).

7. A method of using the coke oven door frame disassembly clamp as described in any one of claims 1-6, characterized in that: Includes the following steps: S1. Install the clamp body (1) onto the gate car of the coke pusher or coke catcher; wherein, the horizontal bolt (104) cooperates with the upper and lower hooks of the gate car, and the gate car pressing bolt cylinder is tightly cooperated with the bolt (105). Under the action of the gate car hook and the pressing bolt cylinder, the clamp body (1) can be firmly fixed on the gate car. S2. When disassembling the furnace door frame (3), remove the hook bolts on the hook bolt lugs (301) of the furnace door frame (3) that needs to be replaced; S3. Move the door trolley forward and insert the fixing trunnion (1011) into the gap of the corresponding hook bolt lug (301). When the vertical frame (102) is tightly attached to the outer surface of the furnace door frame (3), the pin hole of the fixing trunnion (1011) is just fully exposed in the hook bolt lug (301). At this time, insert the fixing pin (2) into the pin hole of the fixing trunnion (1011) for positioning and fixing. S4. After all is secured, the door trolley moves backward and the furnace door frame (3) is safely removed.

8. The method of using a coke oven door frame disassembly clamp for maintenance according to claim 7, characterized in that: After completing S1, in S5, when installing the furnace door frame (3), the new furnace door frame (3) is installed on the fixture body (1), the door trolley is moved, and the furnace door frame (3) is embedded into the furnace body of the carbonization chamber. S6. Fix all the hook bolt lugs (301) around the new furnace door frame (3) with hook bolts. After fixing, remove the fixing pins (2). S7. Reverse the trolley to complete the installation.

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