A kind of flat welding flange reaming device
By designing an adjustable reaming device, the problem that existing flange reaming devices cannot adapt to flanges of different sizes is solved, realizing efficient and precise multi-hole synchronous reaming, and improving the equipment's versatility and production flexibility.
Patent Information
- Application Number
- CN202521820736.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-08-26
AI Technical Summary
Existing flange reaming devices are difficult to adapt flexibly to the simultaneous reaming of multiple holes in flanges of different sizes, resulting in cumbersome and time-consuming operation, and failing to meet the high-efficiency processing needs of multi-variety, small-batch production.
A hole-expanding device for flat-welded flanges, comprising a base shell, a hole-expanding assembly, an adjusting assembly, and a motor-driven assembly, was designed. The device achieves flexible adjustment of the distance of the hole-expanding assembly through a combination of bevel gears and bidirectional screws. Combined with a motor-driven three-jaw chuck and a worm gear mechanism, it enables synchronous multi-hole expansion of the flange.
It enables efficient and precise enlargement of flanges with different outer diameters and pitch circle diameters, simplifies the adjustment process, and improves the equipment's versatility and production flexibility.
Smart Images
Figure CN224938924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hole expansion devices, specifically a hole expansion device for flat welding flanges. Background Technology
[0002] In industries such as petrochemicals, power, and shipbuilding, flat-face flanges are key connecting components in pipeline systems. The evenly distributed bolt holes on them are used to ensure reliable fastening between flanges. Due to design changes, equipment upgrades, or on-site installation requirements, it is sometimes necessary to enlarge the holes of manufactured flanges to accommodate bolts of larger diameters or to meet new connection standards. Enlarging not only requires ensuring the dimensional accuracy and surface finish of each bolt hole, but also the relative positional accuracy between the holes to avoid assembly difficulties or reduced connection strength due to hole position deviations. Therefore, efficient and precise enlarging of flanges is an important part of ensuring the safe operation of pipeline systems.
[0003] Currently, there are some devices on the market for flange reaming. Some of these devices can simultaneously ream multiple bolt holes, thereby improving processing efficiency and ensuring hole position consistency. However, most of these devices are designed for flanges of specific specifications. Their clamping and positioning mechanisms and reaming cutters have a fixed pitch circle diameter and hole diameter range, making it difficult to adapt to flange products with different outer diameters, different numbers of bolt holes, and different pitch circle diameters. When faced with flanges of various specifications, existing equipment often requires complex structural adjustments or replacement of special molds. This is not only cumbersome and time-consuming, but also cannot achieve simultaneous reaming of multiple holes on flanges of different sizes without replacing core components. This limits the versatility and production flexibility of the equipment, making it difficult to meet the high-efficiency processing needs of multi-variety, small-batch production modes. Therefore, we propose a flat-welded flange reaming device. Utility Model Content
[0004] The purpose of this utility model is to provide a device for expanding the bore of a flat-welded flange, so as to solve the problem mentioned in the background art that the existing equipment cannot flexibly adapt to the synchronous expansion of multiple bores of flanges of different sizes.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a flat welding flange expansion device, comprising: a base shell, with an outer shell fixedly connected to the upper end of the base shell; It also includes: two reaming assemblies, which are located inside the housing cavity and are used to ream the flange; An adjustment assembly, located within the inner cavity of the housing, is used to adjust the distance between the two enlarging assemblies. The adjustment assembly includes a connecting shell, a first bevel gear rotatably connected to the center of the inner cavity of the connecting shell, a second bevel gear meshing with one side of the outer surface of the first bevel gear, a bidirectional screw rotatably connected to the center of the connecting shell, the bidirectional screw being fixedly connected to the second bevel gear, and second sliders symmetrically slidably connected to the inner cavity of the connecting shell. The bidirectional screw is threadedly connected to two second sliders, and the second sliders on the same side are fixedly connected to the enlarging assembly.
[0006] The connecting shell has a support plate symmetrically fixedly connected to the middle of the inner cavity. The upper and lower parts of the support plate are symmetrically fixedly connected to support rods, and the support rods are slidably connected to the adjacent second slider.
[0007] The hole-expanding assembly includes a connecting block fixedly connected to the second slider. A gear 1 is rotatably connected to one side of the connecting block, and a gear 2 is meshed with the lower part of the gear. The connecting block is rotatably connected to the gear 2. A third motor is provided on the upper part of the connecting block. The output shaft of the third motor is fixedly connected to the adjacent gear 1. A hole expander is fixedly connected to the lower end of the gear 2.
[0008] The base shell has a support column fixedly connected to its upper end, a first slider slidably connected to the inner cavity of the support column, a threaded rod rotatably connected to the inner cavity of the support column, the first slider and the threaded rod being threadedly connected, and a second motor is provided at the upper end of the support column, with the output shaft of the second motor fixedly connected to the threaded rod.
[0009] The first slider is T-shaped, and the side of the first slider away from the support column is fixedly connected to the connecting shell.
[0010] The base shell contains a first motor, a worm gear is rotatably connected to the base shell, the output shaft of the first motor is fixedly connected to the worm gear, a worm wheel is meshed with one side of the worm gear, a connecting rod is fixedly connected to the middle of the worm wheel, the connecting rod is rotatably connected to the base shell, a turntable is fixedly connected to the upper end of the connecting rod, and a three-jaw chuck is fixedly connected to the upper end of the turntable.
[0011] The worm gear has a connecting groove at its lower part, and a support platform is rotatably connected to the inner cavity of the connecting groove. The lower end of the support platform is fixedly connected to the bottom wall of the inner cavity of the base shell.
[0012] This utility model has at least the following beneficial effects: By rotating the first bevel gear, it meshes with the adjacent second bevel gear, which in turn drives the bidirectional screw to rotate. Since the bidirectional screw is fixedly connected to the second bevel gear, its rotation drives the bidirectional screw to rotate as well. Because the bidirectional screw is threadedly connected to the second slider, its rotation causes the second slider to slide within the connecting housing, thus moving the two reaming assemblies. This allows for adjustment of the distance between the two reaming assemblies, enabling the device to ream flanges with different outer diameters and pitch circle diameters. Adjusting the distance between the two reaming assemblies is simple, saves adjustment time, and improves the equipment's versatility and production flexibility. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the adjustment component of this utility model; Figure 4 This is a schematic diagram of the hole-expanding assembly of this utility model; Figure 5 This is a schematic diagram of the support column of this utility model; Figure 6 This is a schematic diagram of the turntable of this utility model; Figure 7 This is a schematic diagram of the support platform of this utility model.
[0014] In the diagram: 1. Base shell; 2. Outer shell; 3. Turntable; 31. First motor; 32. Worm gear; 33. Worm wheel; 331. Connecting groove; 332. Support platform; 34. Connecting rod; 4. Three-jaw chuck; 5. Support column; 51. Second motor; 52. First slider; 53. Threaded rod; 6. Adjustment assembly; 61. Connecting shell; 62. First bevel gear; 63. Second bevel gear; 64. Bidirectional screw; 65. Support rod; 66. Second slider; 67. Support plate; 7. Hole reaming assembly; 71. Connecting block; 72. Gear one; 73. Gear two; 74. Third motor; 75. Hole reamer. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Example 1 Please see Figures 1 to 7 The present invention provides a technical solution: a flat welding flange expansion device, comprising: a base shell 1, and an outer shell 2 fixedly connected to the upper end of the base shell 1; It also includes: two reaming assemblies 7, which are located in the inner cavity of the housing 2 and are used to ream the flange; Adjustment component 6 is located inside the outer shell 2. Adjustment component 6 is used to adjust the distance between the two hole-expanding components 7. Adjustment component 6 includes a connecting shell 61. A first bevel gear 62 is rotatably connected to the middle of the inner cavity of the connecting shell 61. A second bevel gear 63 is meshed with one side of the outer surface of the first bevel gear 62. A bidirectional screw 64 is rotatably connected to the middle of the connecting shell 61. The bidirectional screw 64 is fixedly connected to the second bevel gear 63. Second sliders 66 are symmetrically slidably connected to the inner cavity of the connecting shell 61. The bidirectional screw 64 is threadedly connected to the two second sliders 66. The second sliders 66 on the same side are fixedly connected to the hole-expanding components 7.
[0017] By rotating the first bevel gear 62, it can mesh with the adjacent second bevel gear 63, which in turn drives the bidirectional screw 64 to rotate. Since the bidirectional screw 64 is fixedly connected to the second bevel gear 63, the rotation of the second bevel gear 63 drives the bidirectional screw 64 to rotate. Since the bidirectional screw 64 is threadedly connected to the second slider 66, the rotation of the bidirectional screw 64 drives the second slider 66 to slide within the cavity of the connecting shell 61, thereby moving the two expanding assemblies 7. This allows the distance between the two expanding assemblies 7 to be adjusted, enabling the device to expand flanges with different outer diameters and pitch circle diameters. Adjusting the distance between the two expanding assemblies 7 is simple to operate, saves adjustment time, and improves the versatility and production flexibility of the equipment.
[0018] A support plate 67 is symmetrically fixedly connected to the middle of the inner cavity of the connecting shell 61. Support rods 65 are symmetrically fixedly connected to the upper and lower parts of the support plate 67. The support rods 65 are slidably connected to the adjacent second slider 66. The hole enlarging assembly 7 includes a connecting block 71 fixedly connected to the second slider 66. A gear 72 is rotatably connected to one side of the connecting block 71. A gear 73 is meshed with the lower part of the gear 72. The connecting block 71 is rotatably connected to the gear 73. A third motor 74 is provided on the upper part of the connecting block 71. The output shaft of the third motor 74 is fixedly connected to the adjacent gear 72. A hole expander 75 is fixedly connected to the lower end of the gear 73. A support column 5 is fixedly connected to the upper end of the base shell 1. A first slider 52 is slidably connected to the inner cavity of the support column 5. A threaded rod 53 is rotatably connected to the inner cavity of the support column 5. The first slider 52 is threadedly connected to the threaded rod 53. A second motor 51 is provided at the upper end of the support column 5. The output shaft of the second motor 51 is fixedly connected to the threaded rod 53. The first slider 52 is T-shaped. The side of the first slider 52 away from the support column 5 is fixedly connected to the connecting shell 61.
[0019] When the distance between the two expanding assemblies 7 needs to be adjusted according to the flange size, the first bevel gear 62 is rotated, which in turn drives the first bevel gear 62 to mesh with the adjacent second bevel gear 63, thereby driving the bidirectional screw 64 to rotate. Since the bidirectional screw 64 and the second bevel gear 63 are fixedly connected, the rotation of the second bevel gear 63 drives the bidirectional screw 64 to rotate. Since the bidirectional screw 64 and the second slider 66 are threadedly connected, the rotation of the bidirectional screw 64 drives the second slider 66 to slide in the inner cavity of the connecting shell 61, thereby driving the two expanding assemblies 7 to move, thus adjusting the distance between the two expanding assemblies 7. During the movement of the second slider 66, the support rod 65 supports and limits the second slider 66. The support plate 67 supports the support rod 65 and limits the movement of the second slider 66, preventing the second slider 66 from colliding with the second bevel gear 63. After adjusting the distance between the two reaming assemblies 7, the flange is clamped using a three-jaw chuck 4. Then, the second motor 51 is controlled by the controller to rotate, and the output shaft of the second motor 51 drives the threaded rod 53 to rotate. Since the first slider 52 is threadedly connected to the threaded rod 53, the rotation of the threaded rod 53 drives the first slider 52 to move downward. Then, the first slider 52 drives the adjusting assembly 6 to move downward, thereby moving the two reaming assemblies 7 towards the flange. Then, the third motor 74 is controlled by the controller to rotate, and the output shaft of the third motor 74 drives the gear 1 72 to rotate. Then, the gear 1 72 meshes with the adjacent gear 2 73, thereby driving the gear 2 73 to rotate. This allows the reamer 75 to rotate, and the reamer 75 to ream the flange.
[0020] Example 2 A first motor 31 is installed inside the base shell 1. A worm gear 32 is rotatably connected to the base shell 1. The output shaft of the first motor 31 is fixedly connected to the worm gear 32. A worm wheel 33 is meshed with one side of the worm gear 32. A connecting rod 34 is fixedly connected to the middle of the worm wheel 33. The connecting rod 34 is rotatably connected to the base shell 1. A turntable 3 is fixedly connected to the upper end of the connecting rod 34. A three-jaw chuck 4 is fixedly connected to the upper end of the turntable 3. A connecting groove 331 is opened at the lower part of the worm wheel 33. A support platform 332 is rotatably connected to the inner cavity of the connecting groove 331. The lower end of the support platform 332 is fixedly connected to the bottom wall of the inner cavity of the base shell 1.
[0021] When enlarging the flange using the reaming assembly 7, the flange needs to be rotated to facilitate enlarging multiple holes. The controller controls the first motor 31 to run, and the output shaft of the first motor 31 drives the worm gear 32 to rotate. When the worm gear 32 rotates, it meshes with the adjacent worm wheel 33, causing the worm wheel 33 to rotate. Since the connecting rod 34 is fixedly connected to the worm wheel 33, the rotation of the worm wheel 33 drives the connecting rod 34 to rotate, which in turn drives the turntable 3 to rotate. Since the upper end of the turntable 3 is fixedly connected to the lower end of the three-jaw chuck 4, the rotation of the turntable 3 drives the three-jaw chuck 4 to rotate, which in turn drives the flange to rotate, facilitating the reaming assembly 7 to enlarge the flange. The cooperation between the support platform 332 and the connecting groove 331 supports and connects the worm wheel 33.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for expanding the bore of a flat-face welding flange, comprising: A base shell, with an outer shell fixedly connected to its upper end; Its characteristic is that it further includes: two reaming assemblies, the reaming assemblies being located in the inner cavity of the housing, the reaming assemblies being used to ream the flange; An adjustment assembly, located within the inner cavity of the housing, is used to adjust the distance between two enlarging assemblies. The adjustment assembly includes a connecting shell, a first bevel gear rotatably connected to the center of the inner cavity of the connecting shell, a second bevel gear meshing with one side of the outer surface of the first bevel gear, a bidirectional screw rotatably connected to the center of the connecting shell, the bidirectional screw being fixedly connected to the second bevel gear, and two second sliders symmetrically slidably connected to the inner cavity of the connecting shell. The bidirectional screw is threadedly connected to two second sliders, and the second sliders on the same side are fixedly connected to the enlarging assembly.
2. The flange expansion device according to claim 1, characterized in that: A support plate is symmetrically fixedly connected to the middle of the inner cavity of the connecting shell. Support rods are symmetrically fixedly connected to the upper and lower parts of the support plate, and each support rod is slidably connected to the adjacent second slider.
3. The flange expansion device according to claim 1, characterized in that: The hole enlarging assembly includes a connecting block fixedly connected to the second slider. A gear one is rotatably connected to one side of the connecting block, and a gear two is meshed with the lower part of the gear. The connecting block and gear two are rotatably connected. A third motor is provided on the upper part of the connecting block. The output shaft of the third motor is fixedly connected to the adjacent gear one. A hole enlarging device is fixedly connected to the lower end of gear two.
4. The device for expanding the bore of a flat-face welding flange according to claim 1, characterized in that: A support column is fixedly connected to the upper end of the base shell. A first slider is slidably connected to the inner cavity of the support column. A threaded rod is rotatably connected to the inner cavity of the support column. The first slider and the threaded rod are threadedly connected. A second motor is provided at the upper end of the support column. The output shaft of the second motor is fixedly connected to the threaded rod.
5. The device for expanding the bore of a flat-face welding flange according to claim 4, characterized in that: The first slider is T-shaped, and the side of the first slider away from the support column is fixedly connected to the connecting shell.
6. The device for expanding the bore of a flat-face welding flange according to claim 1, characterized in that: The base shell cavity is equipped with a first motor, and the base shell cavity is rotatably connected to a worm gear. The output shaft of the first motor is fixedly connected to the worm gear. A worm wheel is meshed with one side of the worm gear. A connecting rod is fixedly connected to the middle of the worm wheel. The connecting rod is rotatably connected to the base shell. A turntable is fixedly connected to the upper end of the connecting rod. A three-jaw chuck is fixedly connected to the upper end of the turntable.
7. The flange enlarging device according to claim 6, characterized in that: The worm gear has a connecting groove at its lower part, and a support platform is rotatably connected to the inner cavity of the connecting groove. The lower end of the support platform is fixedly connected to the bottom wall of the inner cavity of the base shell.