High-precision flange ovality correcting device

Abstract

The utility model belongs to the technical field of flange ovality correction, and particularly relates to a high-precision flange ovality correction device which comprises a base and a flange body, the flange body is placed above the base, a fixing device is arranged on the base, and a correction device is arranged in the flange body. According to the high-precision flange ovality correcting device, a bidirectional motor is started to drive a transmission part to rotate, so that a connecting rod at the top of the transmission part is driven to relatively move along the inner wall of a limiting sliding groove, two clamping assemblies are driven to relatively move, a flange body is clamped and fixed, and the phenomenon that the flange body rolls in the correcting process is avoided; when the rubber fixing block gradually gets close to the outer surface of the flange body, the outer side radian of the rubber fixing block is attached to the outer surface of the flange body, correction thrust generated by contact of the rubber fixing block and the flange body drives the rotating shaft to rotate and adjust on the supporting base, and therefore the device adapts to flange bodies with different diameters, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of flange ovality correction, in particular to a high-precision flange ovality correction device. Background Art

[0002] The height of an onshore wind tower is generally 80 to 160 meters. Considering the difficulty of transportation and production, the tower is generally divided into 3 to 6 sections, and each section of the tower is connected to a forged flange by high-strength bolts. Since the shape of the wind tower is cylindrical or conical, the production process is generally horizontal. Therefore, due to the shape structure of the tower and the influence of gravity, the inner diameter ovality of the flange of each section of the tower that has been welded generally has deviations. When the ovality of the flange exceeds the standard, it can only be corrected through mechanical repair.

[0003] For example, Chinese patent announcement No. CN215543906U discloses a flange ovality correction device. The universal tooling of the jack provided can meet the requirements of fixed installation of jacks of various sizes and the center of gravity of the jack at the center of the inner diameter of the flange, which is convenient for timely replacement when the jack fails or according to production needs, and reduces the invalid force generated by the correction device during operation. The limit members hinged on both sides of the base and the limit plates provided on the top of the main support rod can effectively improve the stability of the entire correction device and facilitate installation. The first arc plate and the second arc plate are provided in a detachable structure, which can be replaced and adjusted according to flanges of different inner diameter sizes, thereby improving the versatility of the correction device. The positioning seat and the arc plate cooperate to play a certain anti-fool effect when replacing the arc plate. A rubber pad is fixedly provided on the edge of the arc plate close to the flange to prevent the arc plate from scratching the flange, thereby protecting the flange. The splicing structure of the main support rod can adapt to flanges of different sizes by adjusting the size of the support rod, thereby improving the versatility of the correction device.

[0004] However, the flange ovality correction device in the above application does not have a corresponding limit fixing device when correcting the flange, which may cause the flange to rotate during the correction process, posing certain safety hazards. Therefore, it has certain limitations.

[0005] Therefore, we urgently need to provide a high-precision flange ovality correction device. Utility Model Content

[0006] The purpose of the utility model is to provide a high-precision flange ovality correction device to solve the problem that the flange ovality correction device proposed in the above-mentioned background technology does not have a corresponding limiting and fixing device when correcting the flange, which may cause the flange to rotate during the correction process, posing certain safety hazards.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision flange ovality correction device, comprising a base and a flange body, the flange body is placed above the base, a fixing device is arranged on the base, and a correction device is arranged inside the flange body.

[0008] The fixing device includes a bidirectional motor, a transmission member, a connecting rod, and a clamping assembly. The bidirectional motor is installed at the inner center of the base, two groups of the transmission members are respectively connected to the output ends on both sides of the bidirectional motor, the two connecting rods are respectively fixedly connected to the top of the transmission member, and the two groups of the clamping assemblies are respectively installed on the top of the connecting rod.

[0009] A further improvement is that limiting grooves are respectively provided on the left and right sides of the upper surface of the base, the transmission member is installed inside the limiting groove, the connecting rod is slidably connected to the inner wall of the limiting groove, the flange body is hoisted on the base, and then the bidirectional motor is started to drive the screw in the transmission member to rotate, thereby driving the threaded sleeve on the screw and the connecting rod on its top to move relative to each other along the inner wall of the limiting groove, thereby driving the two groups of clamping components to move relative to each other, clamping and fixing the flange body, and preventing the flange body from rolling during the correction process.

[0010] A further improvement is that the clamping assembly includes a support seat, a rotating shaft, and a rubber fixing block. The support seat is fixedly connected to the top of the connecting rod, the rotating shaft is rotatably connected to the top of the back side of the support seat, and the rubber fixing block is fixedly connected to the outer end of the rotating shaft and is tightly attached to the outer surface of the flange body. When the rubber fixing block gradually approaches the outer surface of the flange body, its outer curvature fits the outer surface of the flange body. The correction thrust generated by the contact between the two drives the rotating shaft to rotate and adjust on the support seat, thereby adapting to flange bodies of different diameters, thereby improving the applicability of the device.

[0011] A further improvement is that the correction device includes a jack, a base, an arc-shaped pad, and a limit assembly, the jack is installed inside the flange body, the base is fixedly connected to the bottom of the jack, the arc-shaped pad is placed on the bottom wall of the flange body, and the limit assembly is installed on the top of the jack.

[0012] A further improvement is that threaded holes are respectively provided at the four corners of the outer surface of the base and the four corners of the upper surface of the arc-shaped pad. The internal threads of the threaded holes are connected with connecting bolts, and the base at the bottom of the jack and the arc-shaped pad are connected by connecting bolts, thereby improving the safety during correction and avoiding the arc-shaped pad from being collapsed and flying away due to force during correction, which would cause safety hazards.

[0013] A further improvement is that the limit assembly includes a limit column, a connecting plate, and a top plate. The limit column is installed above the jack, and the two connecting plates are respectively fixedly connected to the top of the jack and the bottom of the limit column, and the top plate is fixedly connected to the top of the limit column.

[0014] A further improvement is that bolt holes are respectively opened at the four corners of the outer surfaces of the two connecting plates, and the internal threads of the bolt holes are connected with fastening bolts. Threaded holes are also respectively opened at the four corners of the upper surface of the top plate, and an arc-shaped pad is also connected to the top of the top plate by connecting bolts. Similarly, the limit column, the jack and the arc-shaped pad are connected to avoid the limit column from tilting or even tipping over during correction, thereby injuring the operator. After the three are connected, the jack is started to push the limit column connected to the top of the connecting plate upward, thereby pushing the arc-shaped pad on the top of the limit column to rise until it is in contact with the top wall of the flange body. Subsequently, according to the flange body deviation value measured by the distance meter and the flange BCD, the jack is selectively pressurized to correct the flange body until the ovality of the flange body measured by the distance meter is qualified.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The high-precision flange ovality correction device starts the bidirectional motor to drive the transmission part to rotate, thereby driving the connecting rod on its top to move relatively along the inner wall of the limiting slide groove, thereby driving the two sets of clamping components to move relatively, clamping and fixing the flange body to prevent the flange body from rolling during the correction process.

[0017] 2. In this high-precision flange ovality correction device, when the rubber fixing block gradually approaches the outer surface of the flange body, its outer curvature fits the outer surface of the flange body. The correction thrust generated by the contact between the two drives the rotating shaft to rotate and adjust on the support seat, thereby adapting to flange bodies of different diameters, thereby improving the application range of the device.

[0018] 3. The high-precision flange ovality correction device starts the jack and pushes the limit column connected to the top of the limit column through the connecting plate to move upward, thereby pushing the arc-shaped pad on the top of the limit column to rise until it fits the top wall of the flange body. Then, according to the flange body deviation value measured by the distance meter and the flange BCD, the jack is selectively pressurized to correct the flange body until the ovality of the flange body is qualified as measured by the distance meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of the utility model;

[0020] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the independent bottom-up structure of the correction device of the utility model;

[0022] Figure 4 It is a schematic diagram of the rear cross-sectional split structure of the utility model.

[0023] In the figure: 1. base; 2. flange body; 301. bidirectional motor; 302. transmission member; 303. connecting rod; 304. clamping assembly; 3041. support seat; 3042. rotating shaft; 3043. rubber fixing block; 401. jack; 402. base; 403. arc-shaped pad; 404. limit assembly; 4041. limit column; 4042. connecting plate; 4043. top plate; 405. connecting bolt; 406. fastening bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution: Example

[0026] A high-precision flange ovality correction device comprises a base 1 and a flange body 2. The flange body 2 is placed above the base 1, and a correction device is arranged inside the flange body 2.

[0027] The correction device includes a jack 401, a base 402, an arc-shaped pad 403, and a limit assembly 404. The jack 401 is installed inside the flange body 2, the base 402 is fixedly connected to the bottom of the jack 401, the arc-shaped pad 403 is placed on the bottom wall of the flange body 2, and the limit assembly 404 is installed on the top of the jack 401.

[0028] Threaded holes are respectively provided at the four corners of the outer surface of the base 402 and the four corners of the upper surface of the arc-shaped pad 403. The internal threads of the threaded holes are connected with connecting bolts 405. The base 402 and the arc-shaped pad 403 at the bottom of the jack 401 are connected by connecting bolts 405 to improve the safety during correction and avoid the arc-shaped pad 403 from collapsing due to force during correction, which would cause a safety hazard.

[0029] The limiting assembly 404 includes a limiting column 4041, a connecting plate 4042, and a top plate 4043. The limiting column 4041 is installed above the jack 401. The two connecting plates 4042 are fixedly connected to the top of the jack 401 and the bottom of the limiting column 4041 respectively. The top plate 4043 is fixedly connected to the top of the limiting column 4041.

[0030] Bolt holes are respectively provided at the four corners of the outer surfaces of the two connecting plates 4042, and fastening bolts 406 are connected to the inner threads of the bolt holes. Threaded holes are also respectively provided at the four corners of the upper surface of the top plate 4043, and an arc-shaped pad 403 is also connected to the top plate 4043 through connecting bolts 405. Similarly, the limit column 4041 is connected to the jack 401 and the arc-shaped pad 403 to prevent the limit column 4041 from tilting or even falling during correction, thereby injuring the operator. After the three are connected, start the jack 401 to push the limit column 4041 connected to the top through the connecting plate 4042 to move upward, thereby pushing the arc-shaped pad 403 on the top of the limit column 4041 to rise until it is in contact with the top wall of the flange body 2. Then, according to the deviation value of the flange body 2 measured by the distance meter and the flange BCD, the jack 401 is selectively pressurized to correct the flange body 2 until the ovality of the flange body 2 measured by the distance meter is qualified. Example

[0031] On the basis of Example 1, a fixing device is arranged on the base 1, and the fixing device includes a bidirectional motor 301, a transmission member 302, a connecting rod 303, and a clamping assembly 304. The bidirectional motor 301 is installed at the inner center of the base 1, and two groups of transmission members 302 are respectively connected to the output ends on both sides of the bidirectional motor 301, and two connecting rods 303 are respectively fixedly connected to the top of the transmission member 302, and two groups of clamping assemblies 304 are respectively installed on the top of the connecting rod 303.

[0032] Limiting grooves are respectively provided on the left and right sides of the upper surface of the base 1, the transmission member 302 is installed inside the limiting groove, the connecting rod 303 is slidably connected to the inner wall of the limiting groove, and the flange body 2 is hoisted on the base 1, and then the bidirectional motor 301 is started to drive the screw in the transmission member 302 to rotate, thereby driving the threaded sleeve on the screw and the connecting rod 303 on its top to move relative to each other along the inner wall of the limiting groove, thereby driving the two sets of clamping components 304 to move relative to each other, clamping and fixing the flange body 2 to prevent the flange body 2 from rolling during the correction process.

[0033] The clamping assembly 304 includes a support seat 3041, a rotating shaft 3042, and a rubber fixing block 3043. The support seat 3041 is fixedly connected to the top of the connecting rod 303, the rotating shaft 3042 is rotatably connected to the back top of the support seat 3041, and the rubber fixing block 3043 is fixedly connected to the outer end of the rotating shaft 3042 and is tightly attached to the outer surface of the flange body 2. When the rubber fixing block 3043 gradually approaches the outer surface of the flange body 2, its outer curvature fits the outer surface of the flange body 2. The correction thrust generated by the contact between the two drives the rotating shaft 3042 to rotate and adjust on the support seat 3041, thereby adapting to flange bodies 2 of different diameters, thereby improving the application range of the device.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A high-precision flange ovality correction device, comprising a base (1) and a flange body (2), wherein the flange body (2) is placed above the base (1), and is characterized in that: A fixing device is arranged on the base (1), and a correcting device is arranged inside the flange body (2); The fixing device comprises a bidirectional motor (301), a transmission member (302), a connecting rod (303), and a clamping assembly (304); the bidirectional motor (301) is installed at the inner center of the base (1); two groups of the transmission members (302) are respectively connected to the output ends on both sides of the bidirectional motor (301); two connecting rods (303) are respectively fixedly connected to the top of the transmission member (302); and two groups of the clamping assemblies (304) are respectively installed on the top of the connecting rod (303).

2. A high-precision flange ovality correction device according to claim 1, characterized in that: The upper surface of the base (1) is provided with limited sliding grooves on both sides, respectively. The transmission member (302) is installed inside the limited sliding groove, and the connecting rod (303) is slidably connected to the inner wall of the limited sliding groove.

3. The high-precision flange ovality correction device according to claim 1, characterized in that: The clamping assembly (304) comprises a support seat (3041), a rotating shaft (3042), and a rubber fixing block (3043); the support seat (3041) is fixedly connected to the top of the connecting rod (303); the rotating shaft (3042) is rotatably connected to the top of the back side of the support seat (3041); and the rubber fixing block (3043) is fixedly connected to the outer end of the rotating shaft (3042) and is closely attached to the outer surface of the flange body (2).

4. The high-precision flange ovality correction device according to claim 1, characterized in that: The correction device comprises a jack (401), a base (402), an arc-shaped pad (403), and a limit assembly (404); the jack (401) is installed inside the flange body (2); the base (402) is fixedly connected to the bottom of the jack (401); the arc-shaped pad (403) is placed on the bottom wall of the flange body (2); and the limit assembly (404) is installed on the top of the jack (401).

5. A high-precision flange ovality correction device according to claim 4, characterized in that: Threaded holes are respectively provided at the four corners of the outer surface of the base (402) and the four corners of the upper surface of the arc-shaped pad (403), and the internal threads of the threaded holes are connected to connecting bolts (405).

6. A high-precision flange ovality correction device according to claim 5, characterized in that: The limiting assembly (404) comprises a limiting column (4041), a connecting plate (4042), and a top plate (4043); the limiting column (4041) is installed above the jack (401); the two connecting plates (4042) are respectively fixedly connected to the top of the jack (401) and the bottom of the limiting column (4041); and the top plate (4043) is fixedly connected to the top of the limiting column (4041).

7. A high-precision flange ovality correction device according to claim 6, characterized in that: Bolt holes are respectively provided at the four corners of the outer surfaces of the two connecting plates (4042), and the internal threads of the bolt holes are connected to fastening bolts (406). Threaded holes are also respectively provided at the four corners of the upper surface of the top plate (4043), and an arc-shaped pad (403) is also connected to the top plate (4043) via connecting bolts (405).

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