Auxiliary overhauling device for blast-furnace tuyere

Abstract

The utility model discloses a blast furnace tuyere auxiliary maintenance device which comprises an electric hoist guide rail and an electric hoist installed on the electric hoist guide rail, the electric hoist guide rail is annular and is fixedly installed on an annular main air supply pipeline of a blast furnace tuyere, a support is fixedly installed on a machine body of the electric hoist, and a sliding contact is installed on the support. The sliding contact is connected with a power line of the electric hoist, a support is fixedly installed on the upper end face of the electric hoist guide rail, an annular conductive guide rail is fixedly installed on the support, and the sliding contact is in contact fit with the annular conductive guide rail. The annular conductive guide rail is additionally arranged, the sliding contact is matched with the annular conductive guide rail, an access is formed between the sliding contact and the annular conductive guide rail, the electric hoist is driven to move in the circumferential direction, a power supply line only needs to be connected to the static annular conductive guide rail, a long power supply line is not needed, and the safety of the equipment maintenance process is improved.

Description

Technical Field

[0001] This utility model relates to an electric hoist for blast furnace tuyere maintenance, specifically to an auxiliary maintenance device for blast furnace tuyeres. Background Technology

[0002] In the blast furnace production system of the steel industry, the blast furnace tuyere platform is a critical area for ensuring the stable operation of the blast furnace, and its maintenance work directly affects the continuity of steel production. Maintenance devices based on electric hoists suspended on circular guide rails mainly consist of a ring-shaped electric hoist guide rail, which is fixed to the main air supply duct of the blast furnace tuyere by a support frame. The electric hoist is installed on this guide rail and connected to the power supply interface of the tuyere platform via a power cable. This type of structure, with its flexible movement along the circular guide rail, has become an important tool for the installation and maintenance of tuyere platform equipment. However, in practical applications, because the power supply interface is in a fixed location, the circular movement of the electric hoist requires long-distance wiring, which brings many challenging problems.

[0003] As electric hoists run on long-stroke circular guide rails, the length of the power supply lines increases significantly, making them prone to tangling and twisting. When the electric hoist frequently changes its direction and position, the power supply lines easily become tangled and knotted, which not only hinders the normal movement of the electric hoist but may also damage the outer sheath of the lines due to excessive pulling, causing safety hazards such as leakage, and even leading to power outages and interruptions to the maintenance process. Summary of the Invention

[0004] This utility model provides an auxiliary maintenance device for blast furnace tuyeres. Based on a traditional electric hoist combined with a circular electric hoist guide rail, it adds a circular conductive guide rail and uses a sliding contact to cooperate with the circular conductive guide rail. A passage is formed between the sliding contact and the circular conductive guide rail, driving the electric hoist to move in the circumferential direction. The power supply line only needs to be connected to the stationary circular conductive guide rail, eliminating the need for a long power supply line and improving the safety of the equipment maintenance process.

[0005] The technical solution disclosed in this utility model is as follows: A blast furnace tuyere auxiliary maintenance device includes an electric hoist guide rail and an electric hoist installed thereon. The electric hoist guide rail is circular and is fixedly installed on the circular main air supply pipe of the blast furnace tuyere. A support is fixedly installed on the body of the electric hoist, and a sliding contact is installed on the support. The sliding contact is connected to the power line of the electric hoist. A bracket is fixedly installed on the upper end face of the electric hoist guide rail, and a circular conductive guide rail is fixedly installed on the bracket. The sliding contact is in contact with the circular conductive guide rail.

[0006] Based on the above scheme, as a preferred embodiment, the sliding contact includes a live wire contact and a neutral wire contact. The live wire contact is connected to the live wire end of the power supply line of the electric hoist, and the neutral wire contact is connected to the neutral wire end of the power supply line of the electric hoist.

[0007] Based on the above scheme, as a preferred option, the sliding contact is L-shaped, including a horizontal section and a vertical section. The horizontal section is fixedly connected to the upper end of the vertical section, and the lower end of the vertical section is fixedly connected to the support.

[0008] Based on the above scheme, as a preferred option, the lower end face of the horizontal section has a contact, both the horizontal and vertical sections are pipes and have electrical insulation, and the wire passes through the pipes and connects to the contact.

[0009] Based on the above scheme, as a preferred embodiment, the annular conductive rail includes an electrically insulating outer shell, which includes a left side plate, a right side plate, a top plate, and a support plate. The upper ends of the left side plate and the right side plate are fixed to the top plate. A support plate is fixedly installed on the opposite side of the left side plate and the right side plate. A conductive sheet is fixedly installed on the upper surface of the support plate, and the contact is in contact with the conductive sheet.

[0010] Based on the above scheme, as a preferred embodiment, the two support plates have upward flanges on opposite sides, and the conductive sheet is located inside the flanges.

[0011] Based on the above scheme, as a preferred option, the lower end face of the horizontal section and the outer side face of the vertical section have ball sockets, and ball bearings are installed in the ball sockets. The depth of the ball sockets is at least greater than half the diameter of the ball bearings, and the ball bearings are in contact with the flange.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Based on the traditional electric hoist combined with the circular electric hoist guide rail, a circular conductive guide rail is added. The sliding contact works in conjunction with the circular conductive guide rail, forming a path between the sliding contact and the circular conductive guide rail, driving the electric hoist to move in the circumferential direction. The power supply line only needs to be connected to the stationary circular conductive guide rail, eliminating the need for a long power supply line and improving the safety of equipment maintenance.

[0014] Through the design of the ball bearings, during the movement of the sliding contact, the flange provides support for the sliding contact, and the friction between the two is rolling friction, which has low friction and improves service life.

[0015] The live and neutral wires of the power supply line interface can be connected to the conductive plates on the two support plates in the same vertical plane, and their projections in the vertical direction do not overlap. This design makes the resistance generated by the conductive plates relatively stable and reduces losses. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a physical image of the utility model;

[0018] Figure 3 This is a real-world image of the utility model (view 1);

[0019] Figure 4 This is a photograph of the actual product of this utility model (view 2). Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0021] like Figure 1-4 As shown, an auxiliary maintenance device for blast furnace tuyeres includes an electric hoist guide rail and an electric hoist mounted thereon. The electric hoist guide rail is circular, encircling the blast furnace tuyere and fixedly installed on the annular main air supply pipe of the blast furnace tuyere. A support 1 is fixedly installed on the body of the electric hoist, and a sliding contact is installed on the support. The sliding contact is connected to the power line of the electric hoist. A bracket is fixedly installed on the upper end face of the electric hoist guide rail. An annular conductive guide rail 3 is fixedly installed on the bracket 2, and the sliding contact is in contact with the annular conductive guide rail.

[0022] In this application, the electric hoist and its cooperation with the guide rail are existing technologies and will not be further explained here.

[0023] The bracket is specifically a number of angle steels fixed to the upper end face of the electric hoist guide rail. The two sides of the annular conductive guide rail have inwardly recessed grooves 4. The grooves are at least flat at the upper end. The two ends of the C-shaped steel clamps 5 are clamped in the grooves, and the other end is fixed to the connecting plate 6 on the angle steel by bolts. The connecting plate can be fixed to the angle steel by welding or bolting.

[0024] The C-shaped clamp consists of two C-shaped steel plates, with the other end locked by bolts. On one hand, it can fix the annular conductive rail, and on the other hand, the open end of the clamp creates tension on the annular conductive rail to separate it to both sides, ensuring that the opening of the annular conductive rail does not deform and improving its service life.

[0025] The sliding contact specifically includes a live wire contact 7 and a neutral wire contact 8. The live wire contact is connected to the live wire end of the power supply line of the electric hoist, and the neutral wire contact is connected to the neutral wire end of the power supply line of the electric hoist.

[0026] The sliding contact has an L-shaped shape, including a horizontal section 9 and a vertical section 10. The horizontal section is fixedly connected to the upper end of the vertical section, and the lower end of the vertical section is fixedly connected to the support.

[0027] The horizontal section has a contact 11 at its lower end. Both the horizontal and vertical sections are pipes and are electrically insulated. The conductor 12 passes through the pipes and connects to the contact.

[0028] A circular conductive rail surrounds the blast furnace tuyeres and includes an electrically insulating outer shell. The outer shell comprises a left side plate 13, a right side plate 14, a top plate 15, and a support plate 16. The upper ends of the left and right side plates are fixed to the top plate. A support plate is fixedly installed on the opposite sides of each of the left and right side plates. A conductive sheet 17 is fixedly installed on the upper surface of the support plate, with contacts in contact with the conductive sheet. The opposite sides of the two support plates have upward-facing flanges 18, with the conductive sheet located within these flanges. The conductive sheet on one support plate is connected to the live wire, and the conductive sheet on the other support plate is connected to the neutral wire. The electrically insulating outer shell, horizontal section, and vertical section prevent overcurrent and improve electrical safety.

[0029] The lower end face of the horizontal section and the outer surface of the vertical section have ball sockets, in which ball bearings 19 are installed. The depth of the ball socket is at least greater than half the diameter of the ball bearing between the ball bearing and the upper end face and outer surface of the flange. The ball bearing engages with the flange. Through the design of the ball bearings, during the movement of the sliding contact, the flange provides support for the sliding contact, and the friction between the two is rolling friction, which results in low friction and improved service life.

[0030] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A blast furnace tuyere auxiliary maintenance device, comprising an electric hoist guide rail and an electric hoist installed thereon, characterized in that, The electric hoist guide rail is annular and is fixedly installed on the annular main air supply pipeline of the blast furnace tuyere. The machine body of the electric hoist is fixedly installed with a support. The support is installed with a sliding contact head. The sliding contact head is connected with the power line of the electric hoist. The upper end surface of the electric hoist guide rail is fixedly installed with a bracket. The bracket is fixedly installed with an annular electrically conductive guide rail. The sliding contact head is in contact with the annular electrically conductive guide rail.

2. The auxiliary repair device for the tuyere of the blast furnace according to claim 1, characterised in that, The sliding contact head comprises a live wire contact head and a zero line contact head. The live wire contact head is connected with the live wire end of the power line of the electric hoist. The zero line contact head is connected with the zero line end of the power line of the electric hoist.

3. The auxiliary repair device for the tuyere of the blast furnace according to claim 1, characterised in that, The sliding contact head is L-shaped and comprises a horizontal section and a vertical section. The horizontal section is fixedly connected with the upper end of the vertical section. The lower end of the vertical section is fixedly connected with the support.

4. The auxiliary repair device for the tuyere of the blast furnace according to claim 3, characterised in that, The lower end surface of the horizontal section is provided with a contact head. The horizontal section and the vertical section are both pipe fittings and have electrical insulation. The wire is connected with the contact head by penetrating through the pipe fitting.

5. The furnace tuyere assisted service device of claim 1, wherein, The annular electrically conductive guide rail comprises an electrically insulating shell. The shell comprises a left side plate, a right side plate, a top plate and a support plate. The upper ends of the left side plate and the right side plate are fixedly connected with the top plate. The opposite surfaces of the left side plate and the right side plate are both fixedly installed with a support plate. The upper end surface of the support plate is fixedly installed with an electrically conductive sheet. The contact head is in contact with the electrically conductive sheet.

6. The auxiliary repair device for the tuyere of the blast furnace according to claim 5, characterised in that, The opposite sides of the two support plates are provided with upward flanges. The electrically conductive sheet is located in the flanges.

7. The auxiliary repair device for the tuyere of the blast furnace according to claim 6, characterised in that, The lower end surface of the horizontal section and the outer side surface of the vertical section are provided with ball sockets. The ball sockets are installed with balls. The depth of the ball socket is at least greater than one half of the diameter of the ball. The ball is in contact with the flange.

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