Limiting protection device of dry quenching elevator

Abstract

The utility model relates to a limit protection device of a dry quenching elevator, which belongs to the technical field of coking dry quenching equipment and is used for protecting the limit of the dry quenching elevator. According to the technical scheme, a base is a rectangular plate, a fixing support is perpendicularly welded to the plate face of the base, an adjusting movable plate is connected with the fixing support through an adjusting fastening bolt, a limiting fixing plate is perpendicularly welded to the front end of the adjusting movable plate, and a U-shaped limiting plate is fixed to the plate face of the limiting fixing plate through a limiting fixing bolt; the two upper limiting guide plates and the two lower limiting guide plates are located on the two sides of the U-shaped limiting device respectively and are perpendicularly connected with the plate face of the limiting fixing plate in a welded mode respectively, and the upper limiting guide plates and the lower limiting guide plates on the two sides of the U-shaped limiting device respectively form two V-shaped guide grooves. The elevator limiting device is simple in structure and reliable in work, the elevator can be protected from being damaged due to the fact that the elevator is scratched by the running elevator, safety and equipment hidden dangers are effectively eliminated, and normal running of the elevator is guaranteed.

Description

Technical Field

[0001] This utility model is a protection device for limiting the position of a dry quenching coke elevator, belonging to the technical field of coking dry quenching equipment. Background Technology

[0002] In modern coking production, dry quenching is a crucial process. It involves using nitrogen to cool the nearly 1200°C coke produced from the coke oven, recovering waste heat for power generation. The elevator is a vital piece of equipment in the dry quenching process. Its function is to lift coke cans filled with coke to the top of the elevator tower, then transport them to the upper part of the loading device via a traveling mechanism, where the coke is loaded into the dry quenching furnace. The entire operation of the elevator is automatically controlled. This automation relies heavily on limit switches. The elevator has 17 limit switches, including hook open, bed release acceleration / deceleration, standby position, standby position acceleration / deceleration, and upper limit. These limit switches control the elevator's actions at each position, including lifting start, acceleration / deceleration, lifting stop, traveling start, traveling acceleration / deceleration, traveling stop, and descent start. These 17 limit switches are key to the elevator's automatic operation.

[0003] The limit switch of the hoist is a U-shaped limit switch, installed on the guide rail of the hoist. During hoist operation, the limit baffle installed on the moving part of the hoist inserts into the limit switch at each position to determine the location, thereby controlling various actions of the hoist. Originally, the hoist limit switches were directly fixed to the limit plate at each position using two screws at the bottom of the U-shaped limit switch. During hoist lifting or lowering, the guide rail width of the hoist guide frame is 320mm, and the diameter of the guide wheel is 290mm. The hoist's wire rope is lifting a nearly 100-ton coke can, inevitably causing swaying. The U-shaped limit switch has a U-shaped opening width of only 20mm. This means that sometimes the limit baffle cannot fit into the groove of the U-shaped limit switch when the hoist is swaying. This not only damages the limit switch but also prevents the hoist from performing the actions it should perform at that position, leading to serious production and safety accidents. Therefore, ensuring that the limit baffle can smoothly enter the U-shaped limit groove during the operation of the hoist without scraping the limit is an urgent problem to be solved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a limit protection device for a dry quenching coke elevator. This limit protection device allows the limit baffle to enter the U-shaped limit groove of the elevator and perform a predetermined limit action, thereby preventing the limit baffle from scratching the U-shaped limit and eliminating the production and safety hazards caused by the limit baffle not sensing the U-shaped limit due to the shaking of the elevator, and ensuring the normal operation of the elevator.

[0005] The technical solution to the above technical problem is:

[0006] A limit protection device for a dry quenching coke elevator includes a base, a fixed bracket, an adjusting movable plate, adjusting fastening bolts, a limit fixing plate, limit fixing bolts, an upper limit guide plate, a lower limit guide plate, and a U-shaped limit. The base is a rectangular plate, welded and fixed to the surface of the lifting or traveling fixed steel structure. The fixed bracket is an L-shaped plate, with the shorter plate of the L-shaped plate perpendicularly welded to the base plate surface, and the longer plate of the L-shaped plate pointing vertically downwards. The adjusting movable plate is a rectangular plate, with its length direction perpendicular to the longer plate of the L-shaped plate of the fixed bracket. The surface of the adjusting movable plate is flush with the surface of the longer plate of the L-shaped plate of the fixed bracket. The adjusting movable plate and the longer plate of the L-shaped plate of the fixed bracket are connected by adjusting fastening bolts for limit fixing. The plate is rectangular. The rear plate of the limiting and fixing plate is vertically welded to the front end of the adjusting and moving plate. The limiting and fixing plate has a limiting installation hole in the middle of its plate surface. The limiting and fixing bolts fix the U-shaped limiter to the front plate surface of the limiting and fixing plate through the limiting installation hole. The upper and lower limiting guide plates are rectangular plates. The two upper limiting guide plates are located on the upper part of both sides of the U-shaped limiter, and the two lower limiting guide plates are located on the lower part of both sides of the U-shaped limiter. One side of the plate surface of the two upper and two lower limiting guide plates is vertically welded to the plate surface of the limiting and fixing plate. The upper and lower limiting guide plates on both sides of the U-shaped limiter form two V-shaped guide grooves. The small end openings of the two V-shaped guide grooves are respectively opposite to the upper and lower edges of the middle U-groove of the U-shaped limiter.

[0007] The aforementioned limit protection device for the dry quenching coke elevator has two parallel fixed elongated holes along the length direction on the long plate of the L-shaped plate of the fixed bracket, and two parallel adjusting elongated holes along the length direction on the plate of the adjusting moving plate. The fixed elongated holes of the L-shaped plate of the fixed bracket and the adjusting elongated holes of the adjusting moving plate are perpendicular to each other. Four adjusting fastening bolts are respectively inserted at the intersection of the fixed elongated holes of the L-shaped plate of the fixed bracket and the adjusting elongated holes of the adjusting moving plate to fix the L-shaped plate of the fixed bracket and the adjusting moving plate.

[0008] In the aforementioned limit protection device for the dry quenching coke elevator, the distance between the outer ends of the upper limit guide plate and the lower limit guide plate on both sides of the U-shaped limit is greater than the maximum amount of left and right sway of the elevator; the distance between the inner ends of the upper limit guide plate and the lower limit guide plate on both sides of the U-shaped limit is equal to the width of the U-groove in the middle of the U-shaped limit.

[0009] The aforementioned limit protection device for the dry quenching coke elevator has limit guide plate supports between the upper and lower limit guide plates of the two V-shaped guide grooves on both sides of the U-shaped limit. The limit guide plate supports are trapezoidal plates, and the shape of the trapezoidal plates matches the inner cavity groove of the V-shaped guide groove formed by the upper and lower limit guide plates. The plate surfaces of the two limit guide plate supports are parallel to the plate surfaces of the limit fixing plate. The front ends of the two limit guide plate supports are located on both sides of the U-shaped limit. The upper end of the limit guide plate support is welded to the inner surface of the upper limit guide plate, and the lower end of the limit guide plate support is welded to the inner surface of the lower limit guide plate.

[0010] The beneficial effects of this utility model are:

[0011] The fixed bracket and the adjusting movable plate of this utility model are connected by elongated holes and adjusting fastening bolts, respectively. The position of the V-shaped guide groove connected to the adjusting movable plate can be adjusted to ensure that the limiting baffle can smoothly enter the V-shaped guide groove without touching the U-shaped limit. When the hoist replaces the wire rope or when the hoist shifts forward, backward, left, or right, the position of the U-shaped limit can be adjusted by adjusting the movable plate, which greatly reduces maintenance time and workload. The outer opening of the V-shaped guide groove formed by the upper and lower limiting guide plates ensures that the limiting baffle can enter the upper opening of the V-shaped guide groove when the hoist's left and right sway is at its maximum. The width of the inner opening of the V-shaped guide groove is equal to the width of the middle U-groove of the U-shaped limit, ensuring that the limiting baffle can enter the limit sensing range.

[0012] This utility model has a simple structure, stable performance, reliable operation, low cost, and high cost-effectiveness. The limit baffle can accurately trigger the U-shaped limit, avoiding damage caused by the limit baffle touching the U-shaped limit. It also eliminates the safety hazards caused by the limit baffle not sensing the limit due to the shaking of the elevator during operation, ensuring the normal operation of the elevator. It is suitable for promotion and application in dry quenching elevators. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] The following are marked in the diagram: 1. Base; 2. Fixed bracket; 3. Adjustable moving plate; 4. Fixed elongated hole; 5. Adjustable elongated hole; 6. Adjustable fastening bolt; 7. Limiting fixed plate; 8. Limiting fixed bolt; 9. Upper limit guide plate; 10. Lower limit guide plate; 11. V-shaped guide groove; 12. Limiting guide plate support; 13. U-shaped limit. Detailed Implementation

[0015] This utility model consists of a base 1, a fixed bracket 2, an adjusting movable plate 3, an adjusting fastening bolt 6, a limiting fixing plate 7, a limiting fixing bolt 8, an upper limiting guide plate 9, a lower limiting guide plate 10, a limiting guide plate support 12, and a U-shaped limit 13.

[0016] As shown in the figure, base 1 is a rectangular plate, which is welded and fixed to the surface of the lifting or traveling fixed steel structure.

[0017] As shown in the figure, the fixed bracket 2 is an L-shaped plate. The short plate of the L-shaped plate of the fixed bracket 2 is welded vertically to the plate surface of the base 1. The long plate of the L-shaped plate of the fixed bracket 2 is vertically downward. There are two parallel fixed holes 4 along the length direction on the plate surface of the long plate of the L-shaped plate of the fixed bracket 2, which are used to connect and adjust the moving plate 3.

[0018] As shown in the diagram, the adjusting movable plate 3 is a rectangular plate. The length of the adjusting movable plate 3 is perpendicular to the longer plate of the L-shaped plate of the fixed bracket 2, and the surface of the adjusting movable plate 3 is flush with the surface of the longer plate of the L-shaped plate of the fixed bracket 2. Two parallel adjusting holes 5 are located on the surface of the adjusting movable plate 3 along its length. These adjusting holes 5 are perpendicular to the fixing holes 4 of the L-shaped plate of the fixed bracket 2. Four adjusting bolts 6 are inserted at the intersections of the fixing holes 4 of the L-shaped plate of the fixed bracket 2 and the adjusting holes 5 of the adjusting movable plate 3, thus securing the L-shaped plate of the fixed bracket 2 to the adjusting movable plate 3. Loosening the adjusting bolts 6 allows the adjusting movable plate 3 to move in four directions: up, down, left, and right.

[0019] As shown in the figure, the limiting and fixing plate 7 is a rectangular plate. The limiting and fixing plate 7 is vertically welded to the front end of the adjusting and moving plate 3. The limiting and fixing plate 7 has a limiting installation hole in the middle of its surface. The U-shaped limiter 13 is placed in front of the limiting and fixing plate 7. The limiting and fixing bolt 8 fixes the U-shaped limiter 13 to the surface of the limiting and fixing plate 7 through the limiting installation hole.

[0020] As shown in the figure, in order to ensure that the limiting baffle can pass accurately through the U-shaped groove in the middle of the U-shaped limit 13 without touching the upper and lower parts of the U-shaped limit 13, V-shaped guide grooves 11 are respectively provided on both sides of the U-shaped limit 13.

[0021] As shown in the figure, the V-shaped guide grooves 11 on both sides of the U-shaped limit 13 are composed of upper limit guide plates 9 and lower limit guide plates 10, respectively. The upper limit guide plates 9 and lower limit guide plates 10 are rectangular plates. The two upper limit guide plates 9 and the two lower limit guide plates 10 are located on both sides of the upper part and the lower part of the U-shaped limit 13, respectively. One side of the plate surface of the two upper limit guide plates 9 and the two lower limit guide plates 10 is perpendicularly welded to the plate surface of the limit fixing plate 7, respectively. The outer ends of the plate surfaces of the two upper limit guide plates 9 and the two lower limit guide plates 10 are above and below the U-shaped limit 13, respectively, and the inner ends of the plate surfaces are inclined downward and upward, respectively, opposite to the upper and lower surfaces of the U-shaped limit 13.

[0022] As shown in the figure, the distance between the outer ends of the upper limit guide plate 9 and the lower limit guide plate 10 on both sides of the U-shaped limit 13 is greater than the width of the V-shaped guide groove 11 formed by the upper limit guide plate 9 and the lower limit guide plate 19 when the hoist's left and right sway is at its maximum. This width ensures that the limit baffle can enter the outer opening of the V-shaped guide groove 11 when the hoist's left and right sway is at its maximum. The distance between the inner ends of the upper limit guide plate 9 and the lower limit guide plate 10 on both sides of the U-shaped limit 13 is equal to the width of the middle U-groove of the U-shaped limit 13, which ensures that the limit baffle enters the sensing area of ​​the U-shaped limit 13.

[0023] As shown in the figure, there is also a limiting guide plate support 12 between the upper limit guide plate 9 and the lower limit guide plate 10 of the V-shaped guide groove 11 for support and fixation. The limiting guide plate support 12 is a trapezoidal plate, and the shape of the trapezoidal plate matches the inner cavity groove of the V-shaped guide groove 11 formed by the upper limit guide plate 9 and the lower limit guide plate 10. The plate surface of the two limiting guide plate supports 12 is parallel to the plate surface of the limiting fixing plate 7. The front ends of the two limiting guide plate supports 12 are respectively located on both sides of the U-shaped limit 13. The upper end of the limiting guide plate support 12 is welded to the inner surface of the upper limit guide plate 9, and the lower end of the limiting guide plate support 12 is welded to the inner surface of the lower limit guide plate 10.

[0024] In use, the U-shaped limit 13 is first fixed to the plate surface of the limit fixing plate 7 using the limit fixing bolts 8. After fixing, the front ends of the two V-shaped guide grooves 11 are opposite to the middle U-grooves on both sides of the U-shaped limit 13. Then, the four adjusting fastening bolts 6 are respectively inserted into the intersection of the fixing elongated hole 4 of the L-shaped plate of the fixed bracket 2 and the adjusting elongated hole 5 of the adjusting moving plate 3 to fix the L-shaped plate of the fixed bracket 2 and the adjusting moving plate 3. When the hoist is rising or falling, when the limit baffle is about to approach the limit, it first enters the V-shaped guide groove 11, then passes through the V-shaped guide groove 11 and then passes through the middle U-grooves of the U-shaped limit 13. This ensures that the limit baffle can normally trigger the U-shaped limit 13. After the U-shaped limit 13 senses the limit baffle, it sends a signal of the position to the control mechanism, and the control mechanism executes the action of the position.

[0025] When replacing the wire rope of the hoist or when the hoist shifts forward, backward, left, or right, loosen the adjusting bolt 6 and move the adjusting plate 3 in the four directions (up, down, left, and right). The position of the U-shaped limit 13 can be adjusted by adjusting the adjusting plate 3, avoiding the need to cut off the limit frame, align it, and re-weld it, which greatly reduces maintenance time and workload.

[0026] An embodiment of this utility model is as follows:

[0027] The base 1 is 150mm long, 100mm wide, and 5mm thick;

[0028] The width of the fixed bracket 2 is 80mm, the thickness is 5mm, the length of the short plate is 100mm, the length of the long plate is 200mm, and the length of the fixed long hole 4 is 120mm and the width is 8mm.

[0029] Adjust the length of the movable plate 3 to 200mm, the width to 80mm, and the thickness to 5mm; adjust the length of the long hole 5 to 120mm and the width to 8mm.

[0030] The diameter of the adjusting fastening bolt 6 is 6mm and the length is 50mm;

[0031] The limiting and fixing plate 7 is 240mm long, 100mm wide, and 5mm thick;

[0032] The diameter of the limiting fixing bolt 8 is 6mm and the length is 70mm;

[0033] The upper limit guide plate 9 and the lower limit guide plate 10 are 100mm long, 90mm wide, and 5mm thick;

[0034] The V-shaped guide groove 11 has a front opening width of 20mm and a rear opening width of 80mm;

[0035] The length of the limiting guide plate support 12 is 80mm, the front width is 20mm, the rear width is 80mm, and the thickness is 5mm.

[0036] The model number of the U-shaped limit switch 13 is SJ30-A2.

Claims

1. A limit protection device for a dry quenching coke elevator, characterized in that: It includes a base (1), a fixed bracket (2), an adjusting moving plate (3), adjusting fastening bolts (6), a limiting fixed plate (7), a limiting fixed bolt (8), an upper limit guide plate (9), a lower limit guide plate (10), and a U-shaped limit (13). The base (1) is a rectangular plate, which is welded and fixed to the surface of the lifting or traveling fixed steel structure. The fixed bracket (2) is an L-shaped plate, with the short plate of the L-shaped plate of the fixed bracket (2) welded perpendicularly to the plate surface of the base (1). The long plate of the L-shaped plate of the fixed bracket (2) is vertically downward. The adjusting moving plate (3) is a rectangular plate, with its length direction perpendicular to the long plate of the L-shaped plate of the fixed bracket (2). The plate surface of the adjusting moving plate (3) is close to the plate surface of the long plate of the L-shaped plate of the fixed bracket (2). The adjusting moving plate (3) and the long plate of the L-shaped plate of the fixed bracket (2) are connected by adjusting fastening bolts (6). The limiting fixed plate (7) is a rectangular plate, which is a U-shaped limit. The rear plate of the positioning plate (7) is vertically welded to the front end of the adjusting moving plate (3). A positioning mounting hole is located in the middle of the plate surface of the positioning plate (7). The positioning bolt (8) fixes the U-shaped limiter (13) to the front plate surface of the positioning plate (7) through the positioning mounting hole. The upper limit guide plate (9) and lower limit guide plate (10) are rectangular plates. The two upper limit guide plates (9) are located on the upper parts of both sides of the U-shaped limiter (13), and the two lower limit guide plates (10) are rectangular plates. The plates (10) are located at the lower part of both sides of the U-shaped limit (13). The two upper limit guide plates (9) and the two lower limit guide plates (10) are respectively welded vertically to the plate surface of the limit fixing plate (7). The upper limit guide plates (9) and the lower limit guide plates (10) on both sides of the U-shaped limit (13) form two V-shaped guide grooves (11). The small end openings of the two V-shaped guide grooves (11) are respectively opposite to the upper and lower edges of the middle U-groove of the U-shaped limit (13).

2. The limit protection device for the dry quenching coke elevator according to claim 1, characterized in that: The L-shaped plate of the fixed bracket (2) has two parallel fixed long holes (4) along the length direction on its long plate surface, and the adjusting moving plate (3) has two parallel adjusting long holes (5) along the length direction on its plate surface. The fixed long holes (4) of the L-shaped plate of the fixed bracket (2) and the adjusting long holes (5) of the adjusting moving plate (3) are perpendicular to each other. Four adjusting fastening bolts (6) are respectively inserted at the intersection of the fixed long holes (4) of the L-shaped plate of the fixed bracket (2) and the adjusting long holes (5) of the adjusting moving plate (3) to fix the L-shaped plate of the fixed bracket (2) and the adjusting moving plate (3) in place.

3. The limit protection device for the dry quenching coke elevator according to claim 1, characterized in that: The distance between the outer ends of the upper limit guide plate (9) and the lower limit guide plate (10) on both sides of the U-shaped limit (13) should be greater than the maximum amount of left and right sway of the hoist; the distance between the inner ends of the upper limit guide plate (9) and the lower limit guide plate (10) on both sides of the U-shaped limit (13) should be equal to the width of the U-groove in the middle of the U-shaped limit (13).

4. The limit protection device for the dry quenching coke elevator according to claim 1, characterized in that: The upper limit guide plate (9) and lower limit guide plate (10) of the two V-shaped guide grooves (11) on both sides of the U-shaped limit (13) are respectively supported by limit guide plate (12). The limit guide plate support (12) is a trapezoidal plate. The shape of the trapezoidal plate matches the inner cavity groove of the V-shaped guide groove (11) formed by the upper limit guide plate (9) and the lower limit guide plate (10). The plate surface of the two limit guide plate supports (12) is parallel to the plate surface of the limit fixing plate (7). The front ends of the two limit guide plate supports (12) are located on both sides of the U-shaped limit (13). The upper end of the limit guide plate support (12) is welded to the inner surface of the upper limit guide plate (9), and the lower end of the limit guide plate support (12) is welded to the inner surface of the lower limit guide plate (10).

Images