Trolley for assisting in replacing tuyere small sleeve

Abstract

The utility model discloses a trolley for assisting in replacing a tuyere small sleeve, which belongs to the field of blast furnace equipment and comprises a base, the tuyere small sleeve and an auxiliary structure. The tuyere small sleeve is movably mounted at the top of the base; the auxiliary structure comprises supporting frames, movable wheels, a sleeve and an iron chisel, the supporting frames are fixedly installed on the left side and the right side of the top of the base, the movable wheels are arranged on the front face and the back face of the left side and the right side of the base, the sleeve is arranged on the top between the opposite sides of the supporting frames, and the bottom end of the iron chisel penetrates through and extends to the outer portion of the tuyere small sleeve. According to the trolley for assisting in replacing the tuyere small sleeve, the lever principle is mainly adopted in an auxiliary structure, after the iron chisel is inserted into an inner barrel of the tuyere small sleeve, the stop iron clamps the lower end of the small sleeve, the iron chisel is tilted to be clamped into the groove to play a fixing role, the tail end of the iron chisel is pressed down with force, the front section is tilted under the lever principle, the trolley is manually pushed to advance, and the tuyere small sleeve is gradually embedded into a tuyere middle sleeve; after the tuyere small sleeve is embedded, the iron chisel can be taken out after the lower cushion brick stabilizes the small sleeve.

Description

Technical Field

[0001] The utility model relates to the field of blast furnace equipment, in particular to a small trolley for assisting in replacing a tuyere sleeve. Background Art

[0002] The blast furnaces used in modern steel enterprises have many tuyere for blowing air into the furnace, and each tuyere is equipped with a tuyere sleeve. During normal production, the ambient temperature in the blast furnace is as high as about 1800℃, and wear and burning of the small sleeves of the blast furnace tuyere are inevitable. Therefore, the small sleeves are vulnerable parts in blast furnace production and must be replaced in time if they are damaged. At present, domestic blast furnaces are large-scale, and air supply devices are large-scale. The small tuyere sleeves are large and bulky. During the replacement process, the furnace front and piping operators have a large workload, high labor intensity, long replacement time, low work efficiency, and there are also safety hazards. The small sleeves are heavy, and the installation process depends entirely on dragging and moving them at the post, and it takes multiple people to get on the stage, which poses a large safety hazard and is prone to bumps and wear.

[0003] The small air inlet cover is heavy, and the transportation process requires the cooperation of multiple people, which consumes manpower. The replacement process requires tools such as drills, which is very dangerous. The small cover is bulky and difficult to move, and the labor intensity is high. The space is limited during installation, and it is difficult to operate. Safety accidents are prone to occur under improper operation, and the equipment is easily damaged by bumps. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a small trolley for assisting in replacing the tuyere sleeve, and the technical solution is as follows:

[0005] The auxiliary trolley for replacing the tuyere cover comprises a base, a tuyere cover and an auxiliary structure; the tuyere cover is movably installed on the top of the base;

[0006] The auxiliary structure includes a support frame, a movable wheel, a sleeve and an iron rod. The support frame is fixedly installed on the left and right sides of the top of the base, the movable wheels are arranged on the front and back sides of the left and right sides of the base, the sleeve is arranged at the top between the opposite sides of the support frame, and the bottom end of the iron rod penetrates and extends to the outside of the air outlet sleeve.

[0007] Preferably, the number of the support frames is two and they are symmetrically distributed, and the two support frames are composed of a straight plate and an inclined plate, and the two straight plates are fixedly installed on the left and right sides of the back of the top of the base respectively.

[0008] Preferably, the two inclined plates are fixedly installed on the left and right sides of the top front of the base, and the backs of the two inclined plates are fixedly connected to the tops of the fronts of the two straight plates, respectively, and the two straight plates and the inclined plate form a right-angled triangle structure with the base.

[0009] Preferably, the number of the movable wheels is four and they are symmetrically distributed, and fixed shafts movably connected to the movable wheels are provided on both the left and right sides of the base.

[0010] Preferably, the tops of opposite sides of the support frame are provided with rotation grooves, the two ends of the sleeve extend into the two rotation grooves respectively, the two ends of the sleeve are movably connected to the two support frames through the two rotation grooves respectively, and the middle section of the sleeve is arc-shaped.

[0011] Preferably, the auxiliary structure further comprises a stopper iron and a short section, wherein the stopper iron is arranged at the bottom of the outer surface of the iron brazing rod, the stopper iron is in the shape of a semi-circular disk, and the short section is arranged at the top of the outer surface of the iron brazing rod.

[0012] Preferably, a groove is provided in the middle of the front side of the middle section of the sleeve, and the groove corresponds to the position of the iron bar and is adapted in size.

[0013] Preferably, a fixing hole is provided in the middle of the front side of the base, the fixing hole is located at the top of the fixing hole, and the iron brazing rod and the stop iron both pass through the fixing hole.

[0014] Beneficial effects:

[0015] The beneficial effects produced by adopting the technical solution of the utility model are as follows:

[0016] 1. The auxiliary trolley for replacing the small sleeve of the tuyere mainly adopts the lever principle as the auxiliary structure. After the iron bar is inserted into the inner tube of the small sleeve of the tuyere, the iron stop clamps the lower end of the small sleeve, and the iron bar is lifted to make it fit into the groove to fix it. The end of the iron bar is pressed down with force, and the front end is lifted under the action of the lever principle. The trolley is pushed forward by manpower, and the small sleeve of the tuyere is gradually embedded in the middle sleeve of the tuyere. After the small sleeve of the tuyere is embedded, the lower brick is placed to stabilize the small sleeve and the iron bar can be taken out.

[0017] 2. The auxiliary trolley for replacing the tuyere cover can greatly shorten the time of moving the base, thus minimizing the potential safety hazards of workers moving the tuyere cover and solving the problem of workers having difficulty in operating in the narrow space of the tuyere area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a side structural diagram of the utility model;

[0021] Figure 3 It is a three-dimensional structural diagram of the utility model.

[0022] In the figure, 1. base; 2. small air outlet sleeve; 3. support frame; 4. movable wheel; 5. sleeve; 6. iron rod; 7. iron stop; 8. short section; 9. groove; 10. fixing hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] like Figure 1-3 As shown, the auxiliary trolley for replacing the tuyere cover comprises a base 1, a tuyere cover 2 and an auxiliary structure;

[0025] The air outlet sleeve 2 is movably installed on the top of the base 1;

[0026] The auxiliary structure includes a support frame 3, a movable wheel 4, a sleeve 5 and an iron rod 6. The support frame 3 is fixedly installed on the left and right sides of the top of the base 1, the movable wheel 4 is arranged on the front and back sides of the left and right sides of the base 1, the sleeve 5 is arranged at the top between the opposite sides of the support frame 3, and the bottom end of the iron rod 6 penetrates and extends to the outside of the air outlet sleeve 2.

[0027] In this embodiment, the auxiliary structure utilizes the lever principle to conveniently move and replace the tuyere cover 2, thereby solving the problem that the tuyere area is narrow and difficult for workers to operate.

[0028] In addition, there are four movable wheels 4 which are symmetrically distributed, and fixed shafts movably connected to the movable wheels 4 are provided on both the left and right sides of the base 1, which facilitates the overall movement.

[0029] like Figure 1-3 As shown, there are two support frames 3 and they are symmetrically distributed. The two support frames 3 are composed of a straight plate and an inclined plate. The two straight plates are respectively fixedly installed on the left and right sides of the back side of the top of the base 1, and the inclined plates are respectively fixedly installed on the left and right sides of the front side of the top of the base 1. The backs of the two inclined plates are respectively fixedly connected to the tops of the fronts of the two straight plates, and the two straight plates and the inclined plate form a right-angled triangle structure with the base 1.

[0030] In this embodiment, the right-angled triangle structure formed between the two straight plates and the inclined plate and the base 1 greatly enhances the stability of the overall structure and can prevent tipping as much as possible.

[0031] like Figure 1-3 As shown, rotation grooves are provided at the tops of opposite sides of the support frame 3, and both ends of the sleeve 5 extend to the insides of the two rotation grooves respectively. Both ends of the sleeve 5 are movably connected to the two support frames 3 through the two rotation grooves respectively. The middle section of the sleeve 5 is arc-shaped, and a groove 9 is provided in the middle of the front side of the middle section of the sleeve 5. The groove 9 corresponds to the position of the iron bar 6 and is adapted in size.

[0032] In this embodiment, the iron bar 6 is inserted into the groove 9 at the end of the tilting, which plays a good fixing role and prevents the iron bar 6 from deflecting or shaking during the tilting process.

[0033] like Figure 1-3 As shown, the auxiliary structure also includes a stopper iron 7 and a short section 8. The stopper iron 7 is arranged at the bottom of the outer surface of the iron bar 6. The stopper iron 7 is semi-disc-shaped, and the short section 8 is arranged at the top of the outer surface of the iron bar 6.

[0034] In this embodiment, the short section 8 facilitates the rotation, pushing and tilting of the iron rod 6, making it more convenient to use. The iron stop 7 can clamp the tuyere sleeve 2 to prevent the tuyere sleeve 2 from slipping during the tilting process.

[0035] like Figure 3 As shown, a fixing hole 10 is provided in the middle of the front side of the base 1, the fixing hole 10 is located at the top of the fixing hole, the iron brazing 6 and the iron stop 7 both pass through the fixing hole 10, and a fixing hole 10 is provided in the middle of the front side of the base 1, the fixing hole 10 is located at the top of the fixing hole, and the iron brazing 6 and the iron stop 7 both pass through the fixing hole 10.

[0036] In this embodiment, the fixing hole 10 is disposed so as not to affect the normal use of the iron soldering iron 6 .

[0037] The method of using the utility model is as follows:

[0038] Insert the iron bar 6 into the inner tube of the tuyere small sleeve 2, and twist the short section 8 to make the iron stop 7 clamp the lower end of the small sleeve, then lift the iron bar 6 to make it clamp into the groove 9, press down the end of the iron bar 6 with force, and under the action of the lever principle, the iron bar 6 will drive the tuyere small sleeve 2 to lift, and then push the trolley forward to make the tuyere small sleeve 2 gradually embedded in the tuyere middle sleeve. After the tuyere small sleeve 2 is embedded, the lower part of the brick is placed to stabilize the small sleeve, and then the iron bar 6 can be taken out, the trolley is pushed out and the tuyere small sleeve 2 is fixed.

[0039] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A small trolley for assisting in replacing a small air outlet sleeve, characterized in that: include: A base (1), a tuyere sleeve (2) and an auxiliary structure; The air outlet small sleeve (2) is movably mounted on the top of the base (1); The auxiliary structure comprises a support frame (3), a movable wheel (4), a sleeve (5) and an iron bar (6); the support frame (3) is fixedly mounted on the left and right sides of the top of the base (1); the movable wheel (4) is arranged on the front and back sides of the left and right sides of the base (1); the sleeve (5) is arranged on the top between the opposite sides of the support frame (3); and the bottom end of the iron bar (6) penetrates and extends to the outside of the air outlet sleeve (2).

2. The auxiliary trolley for replacing the air inlet sleeve according to claim 1 is characterized in that: The number of the support frames (3) is two and they are symmetrically distributed. The two support frames (3) are both composed of a straight plate and an inclined plate. The two straight plates are respectively fixedly mounted on the left and right sides of the back of the top of the base (1).

3. The auxiliary trolley for replacing the air vent cover according to claim 2 is characterized in that: The two inclined plates are respectively fixedly mounted on the left and right sides of the top front of the base (1); the backs of the two inclined plates are respectively fixedly connected to the tops of the fronts of the two straight plates; the two straight plates and the inclined plate form a right-angled triangle structure with the base (1).

4. The auxiliary trolley for replacing the air inlet sleeve according to claim 1 is characterized in that: The movable wheels (4) are four in number and are symmetrically distributed, and fixed shafts movably connected to the movable wheels (4) are provided on both the left and right sides of the base (1).

5. The auxiliary trolley for replacing the air inlet sleeve according to claim 1 is characterized in that: The tops of the opposite sides of the support frame (3) are provided with rotation grooves, and the two ends of the sleeve (5) extend into the inside of the two rotation grooves respectively. The two ends of the sleeve (5) are movably connected to the two support frames (3) through the two rotation grooves respectively, and the middle section of the sleeve (5) is in an arc shape.

6. The auxiliary trolley for replacing the air inlet sleeve according to claim 1 is characterized in that: The auxiliary structure also includes a stopper iron (7) and a short section (8), wherein the stopper iron (7) is arranged at the bottom of the outer surface of the iron bar (6), the stopper iron (7) is in the shape of a semicircular disk, and the short section (8) is arranged at the top of the outer surface of the iron bar (6).

7. The auxiliary trolley for replacing the air inlet cover according to claim 5 is characterized in that: A groove (9) is provided in the middle of the front side of the middle section of the sleeve (5), and the groove (9) corresponds to the position of the iron bar (6) and is matched in size.

8. The auxiliary trolley for replacing the air inlet sleeve according to claim 1 is characterized in that: A fixing hole (10) is provided in the middle of the front side of the base (1), the fixing hole (10) is located at the top of the fixing hole, and the iron brazing rod (6) and the iron stop (7) both pass through the fixing hole (10).

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