Chute hanging arm and blast furnace gear box

Abstract

The utility model discloses a chute hanging arm and a blast furnace gear box, and relates to the technical field of ironmaking equipment, the chute hanging arm comprises a hanging arm main body, a first shaft pin hole is formed in the hanging arm main body, and a second shaft pin hole is formed in the hanging arm main body; the guide block is connected with one end, far away from the gear box, of the hanging arm main body, and a second shaft pin hole is formed in the guide block; the shaft pin sequentially penetrates through the second shaft pin hole and the first shaft pin hole to be connected with the gear box; the replacement assembly is detachably connected with the hanging arm main body and is used for replacing the hanging arm; by arranging the guide block, the assembly direction can be accurately guided, and the situation that the chute hanging arm is difficult to quickly reach a replacement position due to lack of a fixed direction in the installation process is avoided; the chute hanging arm is fixed through the shaft pin, the hanging arm body and the guide block can be fixed and separated by inserting and pulling out the fixing pin shaft in the overhauling process, and the chute hanging arm can be rapidly replaced through the replacement assembly.

Description

Technical Field

[0001] The present application belongs to the technical field of ironmaking equipment, and in particular relates to a chute hanging arm and a blast furnace gear box. Background Art

[0002] The chute arm is installed in the gear box on the top of the blast furnace. The chute arm can realize rotation, swing and coupled rotation and swing around the center line of the blast furnace through the power transmission of the transmission mechanism inside the gear box. The blast furnace charging chute is fixed on the chute arm in a way of constraining the freedom of both sides, thereby realizing multiple charging methods such as multi-ring, single-ring, fan-shaped, fixed-point, spiral charging, etc., which is an important means to meet the upper adjustment of the blast furnace. Since the chute arm is located at the upper part of the blast furnace throat, this position is in a harsh environment of high-temperature thermal radiation and high-speed coal gas flow all year round. In particular, when a large blast furnace faces material change conditions, in order to stabilize the furnace condition, it is necessary to open the center of the blast furnace appropriately, and the center coking operation mode is often adopted. In this mode, the temperature at the center of the upper throat often exceeds 600°C; the chute arm often burns, deforms, cracks and fails due to ultra-high temperature under this operating condition. Safe, reliable, fast and convenient online replacement of the chute arm is of great significance to shortening the equipment maintenance cycle, ensuring the production operation of the blast furnace and reducing the risk of fluctuations caused by long-term wind stoppage to the blast furnace. It is also a technical problem that technical personnel in this field need to solve. Summary of the invention

[0003] The purpose of the present application is to provide a chute hanging arm and a blast furnace gear box, aiming to solve the technical problem that the chute hanging arm is inconvenient to replace to at least a certain extent.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] A first aspect of an embodiment of the present application provides a chute arm for transmitting a gear box on a blast furnace roof, the chute arm comprising: an arm body, a first axle pin hole being provided on the arm body; a guide block connected to an end of the arm body away from the gear box, a second axle pin hole being provided on the guide block; an axle pin passing through the second axle pin hole and the first axle pin hole in sequence and connected to the gear box; and a replacement assembly, detachably connected to the arm body, for replacing the arm.

[0006] In some embodiments, a connecting boss is provided on the guide block, and a connecting groove cooperating with the connecting boss is provided on the hanging arm body.

[0007] In some embodiments, a mounting groove is provided on one end of the guide block away from the arm body, and the mounting groove is used to clamp the nut of the shaft pin.

[0008] In some embodiments, the replacement assembly includes: a replacement bracket, which is detachably connected to the hanging arm body; and a lifting device for transporting the replacement bracket.

[0009] In some embodiments, a clamping slot is provided on the replacement bracket, and a clamping block connected to the clamping slot is provided on the hanging arm body.

[0010] In some embodiments, the replacement assembly further includes a positioning unit, and the positioning unit is used to assist in positioning when installing the arm body.

[0011] In some embodiments, the positioning unit includes: a first positioning block fixed on the outer wall of the gear box, the lower end of the first positioning block is provided with a concave first arc surface; a second positioning block fixed to the upper end of the replacement bracket, the upper end of the second positioning block is provided with a convex second arc surface, when the replacement bracket is lifted to the point where the first arc surface and the second arc surface are in contact, the first axle pin hole on the hanging arm body is aligned with the installation position of the gear box.

[0012] In some embodiments, the lifting equipment is an overhead crane.

[0013] In some embodiments, the arm body is made of heat-resistant steel.

[0014] A second aspect of an embodiment of the present application provides a blast furnace gear box, wherein the power output ends on both sides of the blast furnace gear box are connected to the chute hanging arms.

[0015] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0016] A chute arm in the present application can accurately guide the assembly direction by setting a guide block, thereby preventing the chute arm from being difficult to quickly reach the replacement position due to the lack of a fixed direction during the installation process; by setting an axle pin for fixing, the arm body and the guide block can be fixed and separated by plugging and pulling out the fixing pin during maintenance, and the chute arm can be quickly replaced by setting a replacement component; the present application has an innovative structural design for the installation method of the chute arm, which can be quickly disassembled and assembled, the operation plan is fast and convenient, the replacement effect is safe and reliable, and good economic benefits are obtained in blast furnace maintenance.

[0017] A blast furnace gearbox in the present application can be quickly disassembled and assembled by providing a chute hanging arm, the operation scheme is fast and convenient, the replacement effect is safe and reliable, and good economic benefits are obtained in blast furnace maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a chute hanging arm in an embodiment of the present application;

[0020] Figure 2 It is a side view of a guide block of a chute hanging arm of the present application;

[0021] Figure 3 It is a front view of a guide block of a chute hanging arm of the present application.

[0022] The description of the accompanying drawings is as follows: 1. Guide block; 11. Connecting boss; 12. Second axle pin hole; 13. Mounting groove; 2. Axle pin; 3. Hanging arm body; 31. Connecting groove; 32. First axle pin hole; 33. Snap-in block; 4. Replacement bracket; 41. Second positioning block; 42. Snap-in groove; 44. First positioning block. DETAILED DESCRIPTION

[0023] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] Figure 1 is a schematic diagram of the structure of a chute hanging arm in an embodiment of the present application, such as Figure 1As shown, the chute arm is used to drive the gearbox of the blast furnace roof, and the chute arm includes: an arm body 3, on which a first axle pin hole 32 is provided; a guide block 1, connected to the end of the arm body 3 away from the gearbox, and a second axle pin hole 12 is provided on the guide block 1; an axle pin 2, which passes through the second axle pin hole 12 and the first axle pin hole 32 in sequence and is connected to the gearbox; a replacement component, which is detachably connected to the arm body and is used to replace the arm. By setting the guide block 1, the assembly direction can be accurately guided to avoid the chute arm from being difficult to quickly reach the replacement position due to the lack of a fixed direction during the installation process; by setting the axle pin 2 for fixing, the arm body 3 and the guide block 1 can be fixed and separated by plugging and pulling out the fixed pin shaft during maintenance, and the chute arm can be quickly replaced by setting the replacement component; the present application makes a structural innovation design for the installation method of the chute arm, which can be quickly disassembled and assembled, the operation scheme is fast and convenient, the replacement effect is safe and reliable, and good economic benefits are obtained in the maintenance of the blast furnace.

[0025] In some embodiments, the shaft pin 2 is conical, and the pin shaft is located at the center of the guide block 1 and the arm body, and will not be deformed due to the external high temperature environment, thereby achieving the purpose of rapid replacement.

[0026] See also Figure 2 and Figure 3 , Figure 2 It is a side view of a guide block 1 of a chute hanging arm of the present application; Figure 3 It is a front view of a guide block 1 of a chute hanging arm of the present application.

[0027] In some embodiments, the guide block 1 is provided with a connecting boss 11, and the arm body 3 is provided with a connecting groove 31 that cooperates with the connecting boss 11. The guide block 1 is used to accurately guide the assembly direction to prevent the chute arm from being difficult to quickly reach the replacement position due to the lack of a fixed direction during the installation process.

[0028] In some embodiments, a mounting groove 13 is provided on one end of the guide block 1 away from the arm body 3 , and the mounting groove 13 is used to clamp the nut of the shaft pin. Specifically, the mounting groove 13 is an internal spline keyway.

[0029] In some embodiments, the replacement assembly includes: a replacement bracket 4, which is detachably connected to the arm body 3; a lifting device, used to transport the replacement bracket 4; when the arm body needs to be disassembled, the axle pin is taken out, and the replacement bracket 4 is connected to the arm body, and then lifted away by the lifting device, which can be quickly disassembled and assembled. The operation plan is fast and convenient, the replacement effect is safe and reliable, and good economic benefits are obtained during blast furnace maintenance. It is a new method for replacing the blast furnace chute arm.

[0030] In some embodiments, a clamping slot 42 is provided on the replacement bracket 4 , and a clamping block 33 connected to the clamping slot 42 is provided on the hanging arm body.

[0031] In some embodiments, the replacement assembly further includes a positioning unit, and the positioning unit is used to assist in positioning when installing the arm body.

[0032] In some embodiments, the positioning unit includes: a first positioning block 44, fixed on the outer wall of the gear box, and a concave first arc surface is provided at the lower end of the first positioning block 44; a second positioning block 41, fixed on the upper end of the replacement bracket 4, and a convex second arc surface is provided at the upper end of the second positioning block 41. When the replacement bracket 4 is lifted to the point where the first arc surface and the second arc surface are in contact, the first axle pin hole 32 on the hanging arm body is aligned with the installation position of the gear box.

[0033] In some embodiments, the lifting equipment is an overhead crane.

[0034] In some embodiments, the arm body is made of heat-resistant steel.

[0035] A second aspect of an embodiment of the present application provides a blast furnace gear box, wherein the power output ends on both sides of the blast furnace gear box are connected to the chute hanging arms.

[0036] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0037] A chute arm in the present application can accurately guide the assembly direction by setting a guide block, thereby preventing the chute arm from being difficult to quickly reach the replacement position due to the lack of a fixed direction during the installation process; by setting an axle pin for fixing, the arm body and the guide block can be fixed and separated by plugging and pulling out the fixing pin during maintenance, and the chute arm can be quickly replaced by setting a replacement component; the present application has an innovative structural design for the installation method of the chute arm, which can be quickly disassembled and assembled, the operation plan is fast and convenient, the replacement effect is safe and reliable, and good economic benefits are obtained in blast furnace maintenance.

[0038] A blast furnace gearbox in the present application can be quickly disassembled and assembled by providing a chute hanging arm, the operation scheme is fast and convenient, the replacement effect is safe and reliable, and good economic benefits are obtained in blast furnace maintenance.

[0039] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A chute arm, used for driving a gear box on a blast furnace roof, characterized in that: The chute hanging arm comprises: The arm body is provided with a first shaft pin hole A guide block connected to an end of the hanging arm body away from the gear box, and a second shaft pin hole is provided on the guide block; An axle pin, passing through the second axle pin hole and the first axle pin hole in sequence and connected to the gear box; A replacement component is detachably connected to the hanging arm body and is used for replacing the hanging arm.

2. The chute hanging arm according to claim 1, characterized in that: The guide block is provided with a connecting boss, and the hanging arm body is provided with a connecting groove matched with the connecting boss.

3. The chute hanging arm according to claim 1, characterized in that: An installation groove is arranged on one end of the guide block away from the hanging arm body, and the installation groove is used for clamping the nut of the shaft pin.

4. The chute hanging arm according to claim 1, characterized in that: The replacement assembly includes: A replacement bracket is detachably connected to the hanging arm body; A lifting device is provided for transporting the replacement bracket.

5. The chute hanging arm according to claim 4, characterized in that: The replacement bracket is provided with a clamping groove, and the hanging arm body is provided with a clamping block connected with the clamping groove.

6. The chute hanging arm according to claim 4, characterized in that: The replacement assembly also includes a positioning unit, which is used for auxiliary positioning when installing the hanging arm body.

7. The chute hanging arm according to claim 6, characterized in that: The positioning unit includes: A first positioning block is fixed on the outer wall of the gear box, and a first concave arc surface is provided at the lower end of the first positioning block; The second positioning block is fixed to the upper end of the replacement bracket. The upper end of the second positioning block is provided with a protruding second arc surface. When the replacement bracket is lifted until the first arc surface and the second arc surface are in contact, the first axle pin hole on the hanging arm body is aligned with the installation position of the gear box.

8. The chute hanging arm according to claim 4, characterized in that: The lifting equipment is an overhead crane.

9. The chute hanging arm according to claim 1, characterized in that: The hanging arm body is made of heat-resistant steel.

10. A blast furnace gearbox, characterized in that: The power output ends on both sides of the blast furnace gear box are connected to the chute hanging arms as described in any one of claims 1 to 9.

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