A cover furnace cover guide column positioning device and positioning method

Abstract

This invention relates to a positioning device and method for guide columns of a bell-type furnace outer cover. This positioning device can accurately position the guide columns using the sealing groove of the bell-type furnace base as a reference, facilitating the universality of bell-type furnace outer covers. The positioning device includes a horizontal support assembly, a vertical adjustment column, and a positioning assembly. The positioning assembly is positioned above the horizontal support assembly, and the vertical adjustment column is positioned below the horizontal support assembly. In use, the horizontal support assembly and the vertical adjustment column work together to accurately position the guide columns, and laser indicators at both ends of the positioning assembly directly mark the position of the guide columns. With the assistance of this positioning device, the guide columns of multiple bell-type furnace units on a rolling mill line can be positioned, enabling the bell-type furnaces on the rolling mill line to share a common outer cover.

Description

Technical Field

[0001] This invention belongs to the field of industrial equipment installation engineering technology, and in particular relates to a positioning device and positioning method for a guide column of a bell-type furnace outer cover. Background Technology

[0002] A bell-type furnace is an intermittent heat treatment device characterized by a movable bell. The furnace structure is available in circular and rectangular forms, primarily consisting of a base, heating bell, cooling bell, furnace platform, inner shroud, and forced convection system. It uses hydrogen as the protective medium, with a maximum furnace temperature reaching 900℃, and is applied in the oxygen-free bright annealing process for steel wire, steel pipe, cold-rolled strip, copper strip, and silicon steel sheets. Traditional bell-type furnaces use a nitrogen-hydrogen mixture as the protective medium. Hydrogen, compared to nitrogen, has advantages such as better thermal conductivity, lower density, lower dynamic viscosity, and stronger reducing properties, and has gradually replaced the nitrogen-hydrogen mixture as the protective gas. However, hydrogen, as a special gas with a leakage risk, places extremely stringent requirements on the furnace's airtightness, thus demanding higher standards for the installation precision of the bell-type furnace's outer shroud. To ensure continuous production on a rolling mill line, bell-type furnace units typically have 30-50 furnace platforms. The connection between the outer cover and the guide columns needs to be positioned and welded on-site according to the guide column positions. To ensure the versatility of the outer cover, the two guide columns of each bell-type furnace must be accurately positioned. Therefore, the relative dimensions and spatial relationship between the guide columns and the sealing groove of the bell-type furnace base must be strictly controlled, and their installation accuracy must meet the requirements.

[0003] The existing conventional installation method is as follows: First, a measuring tape is used to mark the horizontal and vertical centers inside the base sealing cover. Then, a theodolite is used to extend the centers to the outer guide column mounting surface of the base and mark them. Subsequently, auxiliary lines are drawn from the horizontal and vertical center lines on the base surface to the two guide column mounting points at opposite corners of the base. The installation centers of the guide columns are measured and marked using these auxiliary lines. This conventional method involves a cumbersome measurement process, multiple manual operations, and is prone to introducing human error. Moreover, the error accumulation effect is significant, and the combined errors from each step make it difficult to meet the required accuracy. Furthermore, rework is often required due to substandard accuracy, increasing construction costs and time, resulting in low installation efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a positioning device and positioning method for the guide column of a bell-type furnace outer cover.

[0005] The technical solution adopted in this invention is: a positioning device for guide columns of a bell-type furnace hood, comprising,

[0006] The horizontal support assembly is cross-shaped and symmetrical around the center, with a horizontal adjustment structure at the end;

[0007] The vertical adjustment column is located below the horizontal support components;

[0008] The positioning component, located above the horizontal support component, includes a strip-shaped positioning plate and clamps at both ends. The center of the positioning component is coaxial with the center of the horizontal support component.

[0009] Preferably, the horizontal support assembly includes a first horizontal support plate and a second horizontal support plate that are vertically connected. The first horizontal support plate has horizontal adjustment structures at both ends, and the second horizontal support plate has horizontal adjustment structures at both ends.

[0010] Preferably, the horizontal adjustment structure is a telescopic screw structure, and the screw of the telescopic screw structure is provided with a scale.

[0011] Preferably, the clamp is C-shaped, with a fixing plate extending outward from the opening, and bolts can fix and clamp the fixing plate.

[0012] Preferably, it also includes laser pointers, with two laser pointers respectively clamped in two fixtures, the laser emission direction is vertically downward, and the landing point is the center of the guide post installation.

[0013] Preferably, the vertical adjustment column is a screw rod, and the four vertical adjustment columns are respectively set below the four ends of the horizontal support assembly, and the two symmetrical vertical adjustment columns are equidistant from the center of the horizontal support assembly.

[0014] Preferably, it further includes a horizontal calibration component, which is disposed at the center of the positioning component; the horizontal calibration component is a universal circular level bubble.

[0015] Preferably, the length of the horizontal support plate is longer than the maximum width of the horizontal support assembly.

[0016] A method for positioning guide columns, using a bell-type furnace outer cover guide column positioning device, comprises the following steps:

[0017] Step 1: Check whether the bell-type furnace base has been adjusted and ensure that the bell-type furnace base and the sealing groove above it are stable;

[0018] Step 2: Place the bell-shaped furnace outer cover guide column positioning device within the sealing groove range, and adjust the vertical adjustment component to make the bell-shaped furnace outer cover guide column positioning device horizontal;

[0019] Step 3: Adjust the horizontal adjustment structure at the end of the horizontal support component so that the end of the horizontal adjustment structure fits against the inner wall of the sealing groove, and control the symmetrical horizontal adjustment structures to have the same protruding length; return to step 2 until the hood-type furnace outer cover guide column positioning device is adjusted to the center of the sealing groove and kept horizontal;

[0020] Step 4: Fix the laser pointer in the clamps at both ends of the positioning component, mark the laser landing point as the center point of the guide post, and guide the installation of the guide post.

[0021] The advantages and positive effects of this invention are as follows: by adjusting the length of the support component, the tool is positioned at the center of the sealing groove; by finely adjusting the leveling component, the tool is kept horizontal; the laser pointer used in the fixture is a universal device, characterized by extremely small laser beam collimation and coaxiality errors, concentrated light spot with high recognition, no need for additional lighting in low light conditions, and the spot point completely coincides with the instrument's measurement baseline, achieving millimeter-level aiming and positioning, and completely solving problems such as visual deviation in ordinary measurements. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0023] Figure 2 This is a side view structural diagram of an embodiment of the present invention;

[0024] Figure 3 This is a side view structural diagram of an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a fixture structure according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of a horizontal calibration component according to an embodiment of the present invention;

[0027] In the diagram: 11. Second horizontal support plate, 12. First horizontal support plate, 13. Horizontal adjustment structure, 21. Positioning plate, 22. Fixture, 3. Vertical adjustment column, 4. Horizontal calibration component. Detailed Implementation

[0028] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0029] This invention relates to a positioning device and method for guide columns of a bell-shaped furnace outer cover. This positioning device allows for precise positioning of the guide column using the sealing groove of the bell-shaped furnace base as a reference, facilitating the universality of bell-shaped furnace outer covers. Figure 1-3 As shown, the bell-type furnace outer cover guide column positioning device includes a horizontal support assembly, a vertical adjustment column, and a positioning assembly. The positioning assembly is positioned above the horizontal support assembly, and the vertical adjustment column is positioned below the horizontal support assembly. In use, the horizontal support assembly and the vertical adjustment column work together to accurately position the guide column, and then laser indicators at both ends of the positioning assembly directly mark the position of the guide column. With the assistance of the bell-type furnace outer cover guide column positioning device, the guide columns of multiple bell-type furnace units on a rolling line are positioned, enabling the bell-type furnaces on the rolling line to share a common outer cover.

[0030] For easy positioning, the horizontal support assembly is cross-shaped and symmetrically arranged, including a first horizontal support plate and a second horizontal support plate connected vertically. When suitable for rectangular or elliptical bell-shaped furnace bases, the first horizontal support plate is longer than the second horizontal support plate, and their centers overlap, arranged symmetrically. Both ends of the first and second horizontal support plates are equipped with horizontal adjustment structures, specifically telescopic screw structures. Adjusting the screws allows the ends of the first and second horizontal support plates to abut against the inner wall of the sealing groove. Adjustment requires symmetrical adjustment to maintain the center of the horizontal support assembly coinciding with the center of the sealing groove. Symmetrical adjustment of the screws at both ends of the first or second horizontal support plate is necessary. Scales can be provided on the screws for accurate measurement of the horizontal adjustment structure. The end face of the horizontal adjustment structure can be curved to protect the inner wall of the sealing groove.

[0031] A positioning component is provided above the horizontal support assembly, including a strip-shaped positioning plate and clamps at both ends. The center of the positioning component is coaxial with the center of the horizontal support assembly, and the clamps at both ends of the positioning plate are also symmetrically arranged relative to the center of the horizontal support assembly. The positioning plate is longer than the first and second horizontal support plates, and the clamp positions correspond to the outer side of the sealing groove. Figure 4 As shown, the clamp, shaped like a "C," is used to fix the laser pointer. A fixing plate extends outward from the opening, and bolts secure and clamp the fixing plate. The laser pointer is held in the clamp, and its fixation is achieved by tightening the bolts on the fixing plate. The laser emission direction is vertically downward, with the landing point at the center of the guide column installation. The positioning plate is angled relative to the first horizontal support plate, specifically based on the guide column of the bell-type furnace. The length of the positioning plate and the angle between the positioning plate and the first horizontal support plate are designed according to the bell-type furnace parameters of different rolling lines. The positioning plate is securely connected to the horizontal support assembly, maintaining the relative position of the horizontal support assembly and the positioning assembly, facilitating consistent positioning of different bell-type furnace guide columns during repeated operations. The equipped laser pointer is a general-purpose device characterized by extremely small laser beam collimation and coaxiality errors, concentrated beam spot, high recognition, no need for additional lighting in low-light conditions, and high beam spot accuracy.

[0032] To facilitate precise adjustment of the horizontal support assembly relative to the bell-shaped furnace sealing groove and maintain its horizontal state, a horizontal calibration component is installed at the center of the positioning assembly. Vertical adjustment columns are installed below the horizontal support assembly, specifically symmetrically positioned at both ends of the first and second horizontal support plates. The two symmetrical vertical adjustment columns are equidistant from the center of the horizontal support assembly; a screw structure may be used. During adjustment, the vertical adjustment columns are adjusted to ensure the horizontal support assembly is horizontal, using the horizontal calibration component as a reference. Figure 5 As shown, the horizontal calibration component can be a universal circular level bubble.

[0033] In use, first place the bell-type furnace outer cover guide column positioning device within the sealing groove range, adjust the position so that the device axis overlaps with the center of the sealing groove. After determining the position, use the laser indicator on the positioning component to position the guide column. The specific positioning method is as follows:

[0034] Step 1: Check whether the bell-type furnace base has been adjusted, including the base being firmly connected to the foundation or steel platform below, and ensuring that the base and the sealing groove above it are stable and will not shake or deform due to construction.

[0035] Step 2: Place the bell-shaped furnace outer cover guide column positioning device within the sealing groove range. Using the horizontal calibration component as a reference, adjust the four vertical adjustment components respectively to make the bell-shaped furnace outer cover guide column positioning device horizontal.

[0036] Step 3: Adjust the horizontal adjustment structure at the end of the horizontal support assembly so that the end of the horizontal adjustment structure fits against the inner wall of the sealing groove; first adjust the horizontal adjustment structures at both ends of the first horizontal support plate, controlling the symmetrically set horizontal adjustment structures to have the same protruding length, so that the end faces of both ends of the first horizontal support plate fit against the inside of the sealing groove; then adjust the horizontal adjustment structures at both ends of the second horizontal support plate, similarly controlling the protruding length of the horizontal adjustment structures to have the same protruding length, so that the end faces of both ends of the second horizontal support plate fit against the inside of the sealing groove; during adjustment, the first and second horizontal support plates can be adjusted multiple times respectively; during the adjustment process, you can return to step 2 and adjust multiple times until the guide column positioning device of the outer cover of the bell furnace is adjusted to the center of the sealing groove, and the center of the horizontal support assembly is aligned with the center of the sealing groove and kept horizontal;

[0037] Step 4: Fix the laser pointer in the clamps at both ends of the positioning component, mark the laser landing point as the center point of the guide post, and guide the installation of the guide post.

[0038] Given the high precision required for manufacturing the internal sealing groove of the bell-type furnace, this positioning device is designed based on the precise dimensions of the sealing groove. Furthermore, it leverages the fact that the center of the guide column and the geometric center of the furnace base are aligned on the same straight line. By adjusting the device's center position and levelness, and utilizing the high-precision pointing of the laser positioning component, a unified standard positioning of the guide columns is achieved. This ensures that all guide columns within the unit have consistent dimensions, enabling high-precision positioning of the guide columns. This reduces the relative dimensional error between the outer cover and the sealing groove, meeting the universal interchangeability requirements of the outer cover. This solves the technical problems of insufficient positioning accuracy of existing guide columns and poor interchangeability of outer covers, enabling rapid and precise installation of the guide columns and ensuring the furnace's airtightness.

[0039] The present invention will be further described below through specific embodiments.

[0040] Example 1:

[0041] A positioning device for a guide column of a bell-type furnace hood includes a horizontal support assembly, a vertical adjustment column, a positioning assembly, and a horizontal calibration assembly. Figure 1-3 As shown, the horizontal support assembly is cross-shaped and symmetrically centered, including a first horizontal support plate 12 and a second horizontal support plate 11 connected vertically. The first horizontal support plate has horizontal adjustment structures 13 at both ends, and the second horizontal support plate also has horizontal adjustment structures at both ends. The horizontal adjustment structures are telescopic screw structures, with graduations on the screws. A positioning assembly is positioned above the horizontal support assembly, including a strip-shaped positioning plate 21 and clamps 22 at both ends. The length of the horizontal support plate is longer than the maximum width of the horizontal support assembly, and the center of the positioning assembly is coaxial with the center of the horizontal support assembly. The clamps 22 are C-shaped, with a fixing plate extending outward from the opening. Bolts can fix and clamp the fixing plate. Two laser pointers are respectively clamped in the two clamps 22, with the laser emission direction vertically downwards, landing at the guide post mounting center. The vertical adjustment columns 3 are screws positioned below the horizontal support assembly. Four vertical adjustment columns 3 are respectively positioned below the four ends of the horizontal support assembly, and the distance from the center of the horizontal support assembly is the same for any two symmetrical vertical adjustment columns 3. The horizontal calibration component 4 is a universal circular level bubble, which is set at the center of the positioning component.

[0042] Example 2:

[0043] The bell-shaped furnace outer cover guide column positioning device disclosed in Example 1 is used to position the bell-shaped furnace guide column.

[0044] Preparation before installation: Check whether the bell-type furnace base has been adjusted, including the base being firmly connected to the foundation or steel platform below, and ensure that the base and the sealing groove above it are stable and will not shake or deform due to construction.

[0045] Guide post positioning operation steps:

[0046] 1) Initial adjustment: Adjust the length of the horizontal support assembly to the minimum size to facilitate tool hoisting and placement;

[0047] 2) Tool placement: Hoist the positioning device into the sealed groove of the already installed bell-shaped furnace base, and initially place it in the corresponding positioning area of ​​the double furnace platform;

[0048] 3) Horizontal calibration: Adjust the placement of the positioning device, observe the central circular level bubble, and fine-tune the height of the column by adjusting the vertical adjustment to center the bubble and ensure that the device is in a horizontal state;

[0049] 4) Support Positioning (I): Adjust the length of the horizontal adjustment structure at both ends of the first horizontal support plate so that the arc-shaped contact head at its end is in close contact with the inner side of the sealing groove of the bell-type furnace. Measure the distance from the center bubble to the contact surface at both ends of the first horizontal support plate to ensure that the two distances are equal.

[0050] 5) Support Positioning (II): Adjust the length of the horizontal adjustment structure at both ends of the second horizontal support plate in the same way, so that the arc-shaped contact head at its end is in close contact with the inner side of the sealing groove of the bell furnace, ensuring that the distance from the central bubble to the contact surface at both ends of the second horizontal support plate is equal;

[0051] 6) Accuracy verification: Check the state of the circular level bubble again. If there is any deviation, fine-tune the height of the vertical adjustment column until the bubble is centered; at the same time, re-measure the distance from the center bubble to the four contact surfaces of the horizontal support component.

[0052] 7) Laser positioning: Install and lock the laser sight in the fixture. After turning on the laser, the point where the laser lands on the ground is the center of the installation position of the guide post. After marking the landing point, the guide post installation operation can be carried out.

[0053] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A positioning device for guide columns of a bell-type furnace hood, characterized in that: include, The horizontal support assembly is cross-shaped and symmetrical around the center, with a horizontal adjustment structure at the end; A vertically adjustable column is positioned below the horizontal support assembly; A positioning component is disposed above the horizontal support component, including a strip-shaped positioning plate and clamps at both ends, with the center of the positioning component coaxial with the center of the horizontal support component.

2. The bell-type furnace outer cover guide column positioning device according to claim 1, characterized in that: The horizontal support assembly includes a first horizontal support plate and a second horizontal support plate that are vertically connected. The first horizontal support plate has the horizontal adjustment structure at both ends, and the second horizontal support plate has the horizontal adjustment structure at both ends.

3. The bell-type furnace outer cover guide column positioning device according to claim 2, characterized in that: The horizontal adjustment structure is a telescopic screw structure, and the screw of the telescopic screw structure is provided with a scale.

4. The positioning device for the guide column of the bell-type furnace hood according to claim 1, characterized in that: The clamp is C-shaped, with a fixing plate extending outward from the opening, and bolts can fix and clamp the fixing plate.

5. The bell-type furnace outer cover guide column positioning device according to claim 4, characterized in that: It also includes laser pointers, with two laser pointers respectively clamped in two fixtures, the laser emission direction is vertically downward, and the landing point is the center of the guide post installation.

6. The bell-type furnace outer cover guide column positioning device according to claim 1, characterized in that: The vertical adjustment column is a screw rod, and the four vertical adjustment columns are respectively arranged below the four ends of the horizontal support component, and the distance from the center of the horizontal support component to the two symmetrical vertical adjustment columns is the same.

7. The bell-type furnace outer cover guide column positioning device according to any one of claims 1-6, characterized in that: It also includes a horizontal calibration component, which is located at the center of the positioning component; the horizontal calibration component is a universal circular level bubble.

8. The bell-type furnace outer cover guide column positioning device according to claim 7, characterized in that: The length of the horizontal support plate is longer than the maximum width of the horizontal support assembly.

9. A method for positioning a guide post, characterized in that: Using the bell-type furnace outer cover guide column positioning device according to any one of claims 1-8, the following steps are performed: Step 1: Check whether the bell-type furnace base has been adjusted and ensure that the bell-type furnace base and the sealing groove above it are stable; Step 2: Place the bell-shaped furnace outer cover guide column positioning device within the sealing groove range, and adjust the vertical adjustment component to make the bell-shaped furnace outer cover guide column positioning device horizontal; Step 3: Adjust the horizontal adjustment structure at the end of the horizontal support component so that the end of the horizontal adjustment structure fits against the inner wall of the sealing groove, and control the symmetrical horizontal adjustment structures to have the same protruding length; return to step 2 until the hood-type furnace outer cover guide column positioning device is adjusted to the center of the sealing groove and kept horizontal; Step 4: Fix the laser pointer in the clamps at both ends of the positioning component, mark the laser landing point as the center point of the guide post, and guide the installation of the guide post.

Images