Long-pitch concentric flange and shaft sleeve positioning device and assembly method

Abstract

A long-pitch concentric flange and shaft sleeve positioning device and assembly method belong to the technical field of chemical containers. The present application comprises a laser emitter, an upper flange, a positioning adjustment support, a shell, a shaft sleeve center block, a shaft sleeve, an inner swing rod sheath and a lower flange; the front and rear sides of the shell are respectively provided with the upper flange and the lower flange, the center of the upper flange and the lower flange is provided with the laser emitter, the inside of the shell is provided with the inner swing rod sheath, the inner swing rod sheath is connected with the inner wall of the shell through the positioning adjustment support, and the front and rear ends of the inner swing rod sheath are connected with the shaft sleeve center block through the shaft sleeve. The present application aims to solve the problem of ensuring the concentricity of each part of the petrochemical container with a long-pitch concentric flange and shaft sleeve structure, improving the assembly efficiency and reducing the secondary machining workload. The present application not only realizes the concentricity requirement of the flange and the shaft sleeve, but also avoids the secondary machining workload, thereby improving the production efficiency.

Description

Technical Field

[0001] This invention relates to a long-spacing concentric flange and bushing positioning device and assembly method, belonging to the field of chemical container technology. Background Technology

[0002] Among the supporting products for Lurgi gasifiers, the ash lock is a key piece of equipment in the coal pressurized gasification unit. During operation, the upper valve of the ash lock opens, and the ash produced after coal gasification is discharged from the rotating grate into the ash lock. Inside the ash lock, it is cooled and pulverized, and after being depressurized by an expansion condenser, it is discharged into the ash hopper. The ash lock mainly consists of a shell, upper flange, lower flange, inner swing rod cover, and bushings. During operation, the upper and lower valve stems and valve seats are opened and closed by hydraulic power within the bushings at both ends of the upper and lower flanges and the inner swing rod cover. Therefore, there are strict coaxiality requirements between the upper flange on the ash lock shell and the bushings on the inner swing rod cover, as well as between the lower flange and the bushings on the inner swing rod cover. The ash lock is approximately 5 meters long, with the upper flange about 1.1 meters from the bushing and the lower flange about 1.5 meters from the bushing. Due to the large distance between the upper and lower flanges and the bushings, the coaxiality requirements between the upper and lower flanges and the bushings cannot be achieved through conventional machining.

[0003] To reduce secondary machining workload, existing technology typically uses a laser fixed to a flange bracket via a flange cover, a target fixed to a bushing bracket, and a bearing driving the laser to rotate, causing the laser projection point to trace a circular trajectory on the target. The distance from the target's center point to the circular trajectory is observed and measured. A manual hoist fixing the inner swing arm sleeve is adjusted to make the center of the laser projection point's circular trajectory coincide with the target's center. At this point, the upper and lower flanges and the bushing on the inner swing arm sleeve are concentric. However, in actual production, the center of the laser's circular trajectory using this method is a virtual position, making accurate judgment impossible. After assembly, the concentricity error between the flange and the bushing is large, easily leading to assembly errors and a high rework rate.

[0004] Therefore, there is an urgent need to propose a new long-spacing concentric flange and bushing positioning device and assembly method to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning device and assembly method for long-spacing concentric flanges and bushings, applicable to petrochemical container products with concentric flange and bushing assembly structures. This solves the problem of ensuring the concentricity of various parts of petrochemical containers with long-spacing concentric flange and bushing structures, improving assembly efficiency, and reducing secondary machining work. A brief overview of the invention is provided below to offer a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.

[0006] The technical solution of the present invention:

[0007] Option 1: A long-spacing concentric flange and bushing positioning device, comprising a laser emitter, an upper flange, a positioning adjustment support, a housing, a bushing center block, a bushing, an inner swing rod sleeve, and a lower flange;

[0008] The front and rear sides of the housing are respectively equipped with upper flange and lower flange. A laser emitter is installed at the center of both upper flange and lower flange. An inner swing rod sleeve is installed inside the housing. The inner swing rod sleeve is connected to the inner wall of the housing through positioning adjustment support. The front and rear ends of the inner swing rod sleeve are connected to the central block of the bushing through bushing.

[0009] Preferably, the upper flange is equipped with an upper flange center block via an upper flange bracket, and the lower flange is equipped with a lower flange center block via a lower flange bracket. Both the upper flange bracket and the lower flange bracket have laser emitters mounted at their centers via laser emitter connection bases.

[0010] Preferably, the center of the bushing center block is machined with a horizontally arranged bushing center through hole, and the center of both the upper flange center block and the lower flange center block are machined with a horizontally arranged flange center through hole.

[0011] Preferably, the laser beam emitted by the laser emitter on the upper flange bracket passes through the central through hole of the bushing, through the inner swing rod sleeve, and then irradiates the central through hole of the lower flange central block.

[0012] Preferably, the laser beam emitted by the laser emitter on the lower flange bracket passes through the central through hole of the bushing, through the inner swing rod sleeve, and then irradiates the central through hole of the upper flange central block.

[0013] Preferably, the positioning and adjusting support consists of multiple threaded screws at both ends, which are arranged circumferentially along the inner swing arm sleeve, and each screw is connected at both ends to the inner sidewall of the housing and the outer sidewall of the inner swing arm sleeve, respectively.

[0014] Option 2, an assembly method for a long-spacing concentric flange and bushing positioning device, is based on the long-spacing concentric flange and bushing positioning device described in Option 1, and includes:

[0015] Step 1: Install the bushing center block at both ends of the inner swing rod sleeve through the bushing, and put it into the housing before the housing assembly is closed. Then weld the housing assembly together, and finally perform overall heat treatment on the housing.

[0016] Step 2: After the overall heat treatment of the shell, place the shell on the roller frame;

[0017] Step 3: Connect the housing and the inner swing arm sleeve through the positioning adjustment support, and coarsely adjust the position of the inner swing arm sleeve by adjusting the positioning adjustment support;

[0018] Step 4: The upper flange bracket is connected to the upper flange by bolts, and the lower flange bracket is connected to the lower flange by bolts.

[0019] Step 5: The upper flange center block is connected to the upper flange support, and the lower flange center block is connected to the lower flange support. The laser emitter is installed at the center of both the upper flange support and the lower flange support via a laser emitter connection to the fixing seat.

[0020] Step 6: Open the laser emitter on the upper flange. The laser passes through the central through hole of the bushing located in front of the inner swing arm sleeve. Based on the projection point of the laser beam onto the central block of the bushing in front of the inner swing arm sleeve, determine the offset direction of the inner swing arm sleeve. Adjust the positioning adjustment support connected to the front of the inner swing arm sleeve to adjust the position of the inner swing arm sleeve until the laser beam can pass through the central through hole of the flange in the central block of the lower flange. When the concentricity is properly adjusted, lock the positioning adjustment support.

[0021] Step 7: Open the laser emitter on the lower flange. The laser beam passes through the central through hole of the bushing located behind the inner swing arm sleeve. Determine the offset direction of the inner swing arm sleeve based on the projection point of the laser beam onto the central block of the bushing behind the inner swing arm sleeve. Adjust the positioning adjustment support connected to the rear of the inner swing arm sleeve to adjust its position until the laser beam can pass through the central through hole of the flange of the upper flange. The concentricity is then properly adjusted. At the same time, observe the laser beam projection of the lower flange central block. If the laser beam is offset and does not pass through the central through hole of the flange of the lower flange central block, make fine adjustments until it is properly adjusted. At this time, the inner swing arm sleeve and the upper and lower flanges of the housing are concentric. Weld the inner swing arm sleeve to the housing and fix it.

[0022] The present invention has the following beneficial effects:

[0023] 1. This invention provides a novel approach to the assembly and positioning of flanges and bushings, which is convenient to assemble, highly efficient, highly accurate, and low in cost;

[0024] 2. Compared with conventional mandrel positioning, this invention greatly improves production efficiency, reduces labor intensity, and improves product assembly accuracy;

[0025] 3. The overall structure of this invention is simple and easy to use, does not rely on cranes, thus improving production efficiency; it is also inexpensive, reducing tooling costs.

[0026] 4. This invention not only achieves the concentricity requirement of the flange and bushing, but also avoids secondary machining work, thus improving production efficiency. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a long-spacing concentric flange and bushing positioning device;

[0028] Figure 2 yes Figure 1 Enlarged view of point A;

[0029] Figure 3 This is a side view of a long-spacing concentric flange and bushing positioning device.

[0030] In the diagram: 1-Upper flange bracket, 2-Upper flange center block, 3-Laser emitter connection fixing seat, 4-Laser emitter, 5-Upper flange, 6-Positioning adjustment support, 7-Housing, 8-Sleeve center block, 9-Sleeve, 10-Inner swing rod sleeve, 11-Lower flange, 12-Lower flange bracket, 13-Lower flange center block, 14-Sleeve center through hole, 15-Flange center through hole, 16-Screw. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0032] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0033] Specific implementation method one: Combining Figures 1-3 This embodiment describes a long-spacing concentric flange and bushing positioning device, which includes a laser emitter 4, an upper flange 5, a positioning adjustment support 6, a housing 7, a bushing center block 8, a bushing 9, an inner swing rod sleeve 10, and a lower flange 11.

[0034] Upper flange 5 and lower flange 11 are respectively installed on the front and rear sides of the housing 7. The upper flange 5 is mounted with an upper flange center block 2 through an upper flange bracket 1, and the lower flange 11 is mounted with a lower flange center block 13 through a lower flange bracket 12. Laser emitters 4 are installed at the center of both the upper flange bracket 1 and the lower flange bracket 12 through laser emitter connecting fixing seats 3. A horizontally arranged bushing center through hole 14 is machined at the center of the bushing center block 8. A horizontally arranged flange center through hole 15 is machined at the center of both the upper flange center block 2 and the lower flange center block 13. An inner swing rod sleeve 10 is provided inside the housing 7. The inner swing rod sleeve 10 is connected to the inner wall of the housing 7 through a positioning adjustment support 6. The front and rear ends of the inner swing rod sleeve 10 are connected to the bushing center block 8 through bushings 9.

[0035] The laser beam emitted by the laser emitter 4 on the upper flange bracket 1 passes through the central through hole 14 of the bushing, passes through the inner swing rod sleeve 10, and then irradiates the central through hole 15 of the flange of the lower flange central block 13.

[0036] The laser beam emitted by the laser emitter 4 on the lower flange bracket 12 passes through the central through hole 14 of the bushing, passes through the inner swing rod sleeve 10, and then irradiates the central through hole 15 of the flange of the upper flange central block 2.

[0037] The positioning and adjustment support 6 consists of multiple threaded screws 16 at both ends. These screws 16 are arranged circumferentially along the inner swing arm sleeve 10, and each screw 16 is connected at both ends to the inner wall of the housing 7 and the outer wall of the inner swing arm sleeve 10, respectively. Figure 1 and 2 As shown, the four corners of the inner rocker arm sleeve 10 are all threadedly connected inside the housing 7 via screws 16. This allows for adjustment of the relative fixed position of the inner rocker arm sleeve 10 within the housing 7 by controlling the length of the screws 16. The screws 16 actually serve as the connection support between the inner rocker arm sleeve 10 and the housing 7. The inner rocker arm sleeve 10 and the housing 7 are connected by the screws 16. After proper adjustment and positioning, the screws 16 are welded and fixed. The diameter range of the bushing center through hole 14 and the flange center through hole 15 is 0.5mm to 0.1mm.

[0038] Specific Implementation Method Two: Combining Figures 1-3 This embodiment describes a method for assembling a long-spacing concentric flange and bushing positioning device based on the long-spacing concentric flange and bushing positioning device described in Embodiment 1. The method includes:

[0039] Step 1: The front and rear ends of the machined inner swing rod sleeve 10 are fitted with bushing center blocks 8 through bushings 9. Before the housing 7 is assembled and sewn together, the housing 7 is placed inside the housing 7. Then the housing 7 is assembled and sewn together and welded. Finally, the housing 7 is subjected to overall heat treatment.

[0040] Step 2: After the overall heat treatment of the shell 7, the upper flange 5 and the lower flange 11 are machined, and the shell 7 is placed on the roller frame.

[0041] Step 3: Connect the housing 7 and the inner swing arm sleeve 10 through the positioning adjustment support 6, and coarsely adjust the position of the inner swing arm sleeve 10 by adjusting the positioning adjustment support 6.

[0042] Step 4: The upper flange bracket 1 is connected to the upper flange 5 by bolts, and the lower flange bracket 12 is connected to the lower flange 11 by bolts.

[0043] Step 5: The upper flange center block 2 is connected to the upper flange support 1, and the lower flange center block 13 is connected to the lower flange support 12. The center of both the upper flange support 1 and the lower flange support 12 is connected to the fixing seat 3 and a laser emitter 4 is installed.

[0044] Step 6: Open the laser emitter 4 on the upper flange 5. The laser passes through the central through hole 14 of the bushing located in front of the inner swing arm sleeve 10. Based on the projection point of the laser beam illuminating the central block 8 of the bushing in front of the inner swing arm sleeve 10, determine the offset direction of the inner swing arm sleeve 10. Adjust the positioning adjustment support 6 connected to the front of the inner swing arm sleeve 10 to adjust the position of the inner swing arm sleeve 10 until the laser beam can pass through the central through hole 15 of the flange in the lower flange central block 13. When the concentricity is properly adjusted, lock the positioning adjustment support 6.

[0045] Step 7: Open the laser emitter 4 on the lower flange 11. The laser beam passes through the central through hole 14 of the bushing located behind the inner swing rod sleeve 10. Based on the projection point of the laser beam onto the central block 8 of the bushing behind the inner swing rod sleeve 10, determine the offset direction of the inner swing rod sleeve 10. Adjust the positioning adjustment support 6 connected to the rear of the inner swing rod sleeve 10 to adjust the position of the inner swing rod sleeve 10 until the laser beam can pass through the central through hole 15 of the flange of the upper flange central block 2. The concentricity is then properly adjusted. At the same time, observe the laser beam projection of the lower flange central block 13. If the laser beam is offset and does not pass through the central through hole 15 of the flange of the lower flange central block 13, make fine adjustments until it is properly adjusted. At this time, the inner swing rod sleeve and the upper and lower flanges of the housing are concentric. Weld the inner swing rod sleeve to the housing for fixation.

[0046] This not only achieved the concentricity requirement of the flange and bushing, but also avoided secondary machining work, thus improving production efficiency.

[0047] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A long-spacing concentric flange and bushing positioning device, characterized in that: It includes a laser emitter (4), an upper flange (5), a positioning and adjustment support (6), a housing (7), a bushing center block (8), a bushing (9), an inner swing arm sleeve (10), and a lower flange (11). The front and rear sides of the housing (7) are respectively equipped with an upper flange (5) and a lower flange (11). A laser emitter (4) is installed at the center of both the upper flange (5) and the lower flange (11). An inner swing rod sleeve (10) is provided inside the housing (7). The inner swing rod sleeve (10) is connected to the inner wall of the housing (7) through a positioning adjustment support (6). The front and rear ends of the inner swing rod sleeve (10) are connected to a bushing center block (8) through a bushing (9). The upper flange (5) is equipped with an upper flange center block (2) via an upper flange bracket (1), and the lower flange (11) is equipped with a lower flange center block (13) via a lower flange bracket (12). Both the upper flange bracket (1) and the lower flange bracket (12) are equipped with laser emitters (4) via laser emitter connection fixing seats (3). The bushing center block (8) has a horizontally arranged bushing center through hole (14) at its center, and the upper flange center block (2) and the lower flange center block (13) both have horizontally arranged flange center through holes (15) at their centers. The laser beam emitted by the laser emitter (4) on the upper flange bracket (1) passes through the central through hole (14) of the bushing, passes through the inner swing rod sleeve (10), and then irradiates the central through hole (15) of the flange center block (13) of the lower flange. The laser beam emitted by the laser emitter (4) on the lower flange bracket (12) passes through the central through hole (14) of the bushing and through the inner swing rod sleeve (10) before irradiating the central through hole (15) of the upper flange central block (2). The positioning adjustment support (6) consists of multiple screws (16) with threads at both ends. The multiple screws (16) are arranged circumferentially along the inner swing arm sleeve (10), and the two ends of each screw (16) are respectively connected to the inner sidewall of the housing (7) and the outer sidewall of the inner swing arm sleeve (10).

2. An assembly method for a long-spacing concentric flange and bushing positioning device, implemented based on the long-spacing concentric flange and bushing positioning device as described in claim 1, characterized in that, include: Step 1: Install the bushing center block (8) on the front and rear ends of the inner swing rod sleeve (10) through the bushing (9), put it into the housing (7) before the housing (7) is assembled and welded, and finally heat treat the housing (7) as a whole. Step 2: After the overall heat treatment of the housing (7), place the housing (7) on the roller frame; Step 3: Connect the housing (7) and the inner swing arm sleeve (10) through the positioning adjustment support (6), and roughly adjust the position of the inner swing arm sleeve (10) by adjusting the positioning adjustment support (6); Step 4: The upper flange bracket (1) is connected to the upper flange (5) by bolts, and the lower flange bracket (12) is connected to the lower flange (11) by bolts; Step 5: The upper flange center block (2) is connected to the upper flange bracket (1), and the lower flange center block (13) is connected to the lower flange bracket (12). The upper flange bracket (1) and the lower flange bracket (12) are both connected to the laser emitter fixed seat (3) and a laser emitter (4) is installed at the center of the laser emitter. Step 6: Open the laser emitter (4) on the upper flange (5). The laser passes through the central through hole (14) of the bushing located in front of the inner swing rod sleeve (10). Based on the projection point of the laser beam onto the central block (8) of the bushing in front of the inner swing rod sleeve (10), determine the offset direction of the inner swing rod sleeve (10). Adjust the positioning adjustment support (6) connected to the front of the inner swing rod sleeve (10) to adjust the position of the inner swing rod sleeve (10) until the laser beam can pass through the central through hole (15) of the flange central block (13) of the lower flange. When the concentricity is properly adjusted, lock the positioning adjustment support (6). Step 7: Open the laser emitter (4) on the lower flange (11). The laser passes through the central through hole (14) of the bushing located behind the inner swing rod sleeve (10). Based on the projection point of the laser beam onto the central block (8) of the bushing behind the inner swing rod sleeve (10), determine the offset direction of the inner swing rod sleeve (10). Adjust the positioning adjustment support (6) connected to the rear of the inner swing rod sleeve (10) to adjust the position of the inner swing rod sleeve (10) until the laser beam can pass through the central through hole (15) of the flange of the upper flange central block (2). The concentricity is adjusted appropriately. At the same time, observe the laser beam projection of the lower flange central block (13). If the laser beam is offset and does not pass through the central through hole (15) of the flange of the lower flange central block (13), make fine adjustments until it is adjusted appropriately. At this time, the inner swing rod sleeve and the upper and lower flanges of the housing are concentric. Weld the inner swing rod sleeve to the housing.

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