CN216585049U

CN216585049U - Auxiliary vehicle for replacing blast furnace tuyere small sleeve

Info

Publication number: CN216585049U
Application number: CN202122526507.9U
Authority: CN
Inventors: 吴虹利; 李超
Original assignee: Hebei Xinda Iron and Steel Group Co Ltd
Current assignee: Hebei Xinda Iron and Steel Group Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-05-24
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses an auxiliary vehicle for replacing a blast furnace tuyere small sleeve, which comprises a vehicle body, a supporting circular tube, a rotating rod, a telescopic circular tube and a small sleeve support, wherein the supporting circular tube is arranged on the vehicle body; the upper part of the vehicle body is rotatably connected with a rotating shaft; the supporting circular tube is of a tubular structure with two open ends, and the middle part of the supporting circular tube is fixedly connected with the rotating shaft; the telescopic circular tube is of a tubular structure with an opening at the rear end, and the front end of the supporting circular tube is inserted into the rear end of the telescopic circular tube; the rotating rod is of a round rod-shaped structure, the rotating rod is inserted into and rotatably connected into the supporting round tube, and the front end of the rotating rod is inserted into the telescopic round tube forwards; the front end of the rotating rod is provided with an external thread, and an internal thread matched with the external thread is arranged in the telescopic circular tube; the small sleeve support is fixedly connected to the front end of the telescopic circular tube. The auxiliary vehicle can effectively shorten the time for replacing the small sleeve, reduces the labor intensity of workers, and has the characteristics of simple structure, strong applicability, convenient use and the like.

Description

Auxiliary vehicle for replacing blast furnace tuyere small sleeve

Technical Field

The utility model relates to a blast furnace auxiliary tool, in particular to an auxiliary vehicle for replacing a blast furnace tuyere small sleeve.

Background

The blast furnace air inlet system comprises a large sleeve, a middle sleeve and a small sleeve; the large sleeve is connected with the furnace shell and sleeved with the middle sleeve, the middle sleeve is sleeved with the small sleeve, the small sleeve sends hot air into the blast furnace, and the tuyere small sleeve has the function of sending the hot air into the blast furnace; generally, the temperature of hot air is about 1200 ℃, the front end of the tuyere small sleeve is in a high-temperature environment close to 2000 ℃, and the temperature of the slag iron melt is above 1400 ℃; moreover, in the iron-making production process, the tuyere small sleeve bears the erosion of materials and the erosion of chemical elements; therefore, the working environment of the tuyere small sleeve is extremely severe, so that the tuyere small sleeve is extremely easy to damage and needs to be replaced regularly. At present, the domestic blast furnace is large-scale, the air supply device is large-scale, the tuyere small sleeve is large and heavy, and the stokehole and the piping operators have large workload, high labor intensity, long replacement time and low working efficiency in the replacement process and have potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an auxiliary vehicle which is convenient to use and used for replacing a blast furnace tuyere small sleeve.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the device comprises a vehicle body, a supporting circular tube, a rotating rod, a telescopic circular tube and a small sleeve support; the upper part of the vehicle body is rotatably connected with a rotating shaft; the supporting circular tube is of a tubular structure with two open ends, and the middle part of the supporting circular tube is fixedly connected with the rotating shaft; the telescopic circular tube is of a tubular structure with an opening at the rear end, and the front end of the support circular tube is inserted into the rear end of the telescopic circular tube; the rotary rod is of a round rod-shaped structure, the rotary rod is inserted into and rotatably connected in the supporting round tube, and the front end of the rotary rod is inserted forwards into the telescopic round tube; the front end of the rotating rod is provided with an external thread, and an internal thread matched with the external thread is arranged in the telescopic circular tube; the small sleeve support is fixedly connected to the front end of the telescopic circular tube.

A baffle is arranged between the small sleeve support and the telescopic circular tube.

The pipe of the supporting circular pipe is internally provided with a positioning convex ring, and the rotating rod is provided with a positioning groove which is in rotating fit with the positioning convex ring.

A limiting convex protrusion is arranged outside the front end pipe of the supporting circular pipe, and a limiting convex protrusion is arranged inside the rear end pipe of the telescopic circular pipe.

The upper part of the vehicle body is rotatably connected with a rotating shaft, and the supporting circular tube is fixedly connected with the rotating shaft.

The vehicle body comprises wheels and a wheel shaft; the wheels adopt a carrier roller structure rotating around a wheel shaft.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the telescopic circular tube is in threaded connection with the rotary rod, can be extended and shortened, and can directly convey the small sleeve into the tuyere; the rotating shaft can rotate, the whole height can be adjusted, and the adaptability of the trolley is strong; the small sleeve support extends to the inner diameter of the small sleeve, so that the outer edge of the tuyere small sleeve can be effectively protected, and the smoothness of a contact surface is ensured. The utility model can effectively shorten the time for replacing the small sleeve, reduce the labor intensity of workers, and has the characteristics of simple structure, strong applicability, convenient use and the like.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a partially enlarged view of a portion B in fig. 2.

In the figure: rotating the handle 1; a rotating rod 2; a support circular tube 3; a support frame 4; a rotating shaft 5; a bearing 6; a load-bearing support 7; a wheel shaft 8; a wheel 9; a telescopic circular tube 10; a baffle plate 11; a small sleeve holder 12; a threaded segment 13; a positioning convex ring 14; a positioning groove 15; a limiting inner bulge 16; a limiting bulge 17.

Detailed Description

As shown in fig. 1 and 2, the auxiliary vehicle for replacing a blast furnace tuyere small sleeve comprises a vehicle body, a supporting circular tube 3, a rotating rod 2, a telescopic circular tube 10 and a small sleeve support 12. The vehicle body comprises wheels 9, a wheel shaft 8 and a bearing bracket 7; the wheels 9 are arranged in front and at the back and adopt carrier roller structures or the front wheels adopt carrier roller structures, and the wheels 9 roll by taking the wheel shaft 8 as an axis; the carrier roller structure is adopted, so that the carrier roller has good trafficability, heat resistance and air tightness, and can be better adapted to the use environment; the two bearing supports 7 are of triangular structures, and are good in stability; two lower corners of the bearing support 7 are respectively connected to wheel shafts 8 on two sides of a wheel 9, and each bearing support 7 is respectively connected with a front wheel shaft 8 and a rear wheel shaft 8 on the same side. The top of the bearing support 7 is connected with a bearing 6, preferably a ball bearing; a rotary shaft 5 is connected between the two bearings 6 so that the rotary shaft 5 can rotate on the vehicle body.

As shown in figures 1 and 2, the auxiliary vehicle for replacing the blast furnace tuyere small sleeve is characterized in that a support frame 4 is fixedly connected to a rotating shaft 5, and the middle part of a support circular pipe 3 is fixedly connected above the support frame 4. The supporting circular tube 3 is a circular tube structure with openings at two ends, is arranged in the front-back direction and is fixedly connected above the supporting frame 4. The telescopic circular tube 10 is of a tubular structure with an opening at the rear end, the front end of the support circular tube 3 is inserted into the telescopic circular tube 10 from back to front, and the telescopic circular tube 10 can slide on the support circular tube 3 back and forth. As shown in fig. 4, a limiting protrusion 17 protruding outwards is arranged outside the front end pipe of the supporting circular pipe 3, and a limiting protrusion 16 protruding inwards is arranged inside the rear end pipe of the telescopic circular pipe 10; the limiting convex 17 and the limiting convex 16 are matched with each other to prevent the telescopic circular tube 10 from falling off from the support circular tube 3.

As shown in fig. 1 and 2, the rotary rod 2 of the auxiliary vehicle for replacing a blast furnace tuyere small sleeve is of a round rod-shaped structure, the rotary rod 2 is inserted into and rotatably connected with the supporting round pipe 3, and the front end of the rotary rod 2 forwards penetrates through the supporting round pipe 3 and is inserted into the telescopic round pipe 10; as shown in fig. 3, a circle of positioning convex rings 14 protruding inwards is arranged in the supporting circular tube 3, and a circle of positioning grooves 15 is arranged on the rotating rod 2; the positioning convex ring 14 and the positioning groove 15; therefore, the rotating rod 2 can rotate in the supporting circular tube 3, and the front and back relative displacement cannot be generated. The front end of the rotating rod 2 is provided with an external thread, a thread section 13 is arranged in the telescopic circular tube 10, and the thread section 13 is in threaded connection with the external thread of the rotating rod 2; thus, the rotating rod 2 is rotated, and the telescopic circular tube 10 can be driven by the thread to move back and forth on the supporting circular tube 3, so that the telescopic circular tube 10 can be stretched on the supporting circular tube 3. The rear end of the rotating rod 2 is connected with a rotating handle 1 so as to conveniently rotate the rotating rod 2.

As shown in fig. 1 and 2, a small sleeve support 12 is connected to the front end of a telescopic circular tube 10 of the auxiliary vehicle for replacing a blast furnace tuyere small sleeve; the small sleeve support 12 is made of round steel, the size of the small sleeve support just extends into the inner hole of the small sleeve, and the small sleeve can be effectively fixed. A disc-shaped baffle 11 is connected between the small sleeve support 12 and the telescopic circular tube 10; the baffle 11 can also be annular and is sleeved at the front end of the telescopic circular tube 10; the baffle 11 plays a role in fixing the small sleeve and preventing the small sleeve from sliding.

The method for replacing the small sleeve of the auxiliary vehicle for replacing the small sleeve of the blast furnace tuyere comprises the following steps:

(1) one end of the small sleeve support 12 is adjusted to a proper height through the rotation of the rotating shaft 5, and the small sleeve support 12 extends into the inner diameter of the small sleeve to be replaced.

(2) Only one person needs to hold the rotating handle 1 by hand to push the trolley to the front of the air opening of the small sleeve to be replaced.

(3) The position of the trolley is aligned with the tuyere, the rotating shaft 5 is rotated to enable the height of the small sleeve to be proper, and then the rotating handle 1 is rotated to enable the telescopic circular tube 10 to extend forwards to send the small sleeve into the tuyere.

(4) After the tuyere small sleeve reaches the manufacturing position, the rotating shaft 5 is rotated to separate the small sleeve support 12 from the small sleeve, the rotating handle 1 is rotated to enable the telescopic circular tube 10 to be contracted to the shortest position, and the trolley is withdrawn.

Claims

1. The utility model provides an auxiliary vehicle for changing blast furnace tuyere small sleeve which characterized in that: which comprises a vehicle body, a supporting round tube (3), a rotating rod (2), a telescopic round tube (10) and a small sleeve support (12); the upper part of the vehicle body is rotatably connected with a rotating shaft (5); the supporting circular tube (3) is of a tubular structure with openings at two ends, and the middle part of the supporting circular tube is fixedly connected with the rotating shaft (5); the telescopic circular tube (10) is of a tubular structure with an opening at the rear end, and the front end of the support circular tube (3) is inserted into the rear end of the telescopic circular tube (10); the rotating rod (2) is of a round rod-shaped structure, the rotating rod (2) is inserted into and rotatably connected with the supporting round pipe (3), and the front end of the rotating rod (2) is inserted into the telescopic round pipe (10) forwards; the front end of the rotating rod (2) is provided with an external thread, and an internal thread matched with the external thread is arranged in the telescopic circular tube (10); the small sleeve support (12) is fixedly connected to the front end of the telescopic circular tube (10).

2. The auxiliary cart for replacing a blast furnace tuyere small sleeve according to claim 1, characterized in that: a baffle (11) is arranged between the small sleeve support (12) and the telescopic circular tube (10).

3. The auxiliary cart for replacing a blast furnace tuyere small sleeve according to claim 1, characterized in that: the pipe of support pipe (3) is equipped with location bulge loop (14) in, be equipped with on rotary rod (2) with location bulge loop (14) normal running fit's positioning groove (15).

4. The auxiliary cart for replacing a blast furnace tuyere small sleeve according to claim 1, characterized in that: a limiting convex bulge (17) is arranged outside the front end pipe of the supporting circular pipe (3), and a limiting convex bulge (16) is arranged inside the rear end pipe of the telescopic circular pipe (10).

5. An auxiliary cart for replacing a blast furnace tuyere small sleeve according to any one of claims 1 to 4, characterized in that: the vehicle body comprises a wheel (9) and a wheel shaft (8); the wheels (9) adopt a carrier roller structure rotating around a wheel shaft (8).