A flange plate installation aligner

Abstract

This invention relates to the field of flange installation technology, specifically providing a flange installation alignment device, comprising: a first support mechanism and a second support mechanism. The first support mechanism supports the flange and maintains the central axis of the flange aligned with the central axis of the first support mechanism. The second support mechanism is coaxially connected to the first support mechanism and provides tension support to the inner wall of the pipeline. When the second support mechanism is in a tensioned state, its axis coincides with the axis of the pipeline and it can move along the axial direction of the pipeline. This invention effectively solves the problems of difficult flange installation alignment and low pipeline installation efficiency in the prior art.

Description

Technical Field

[0001] This invention relates to the field of flange installation technology, and more particularly to a flange installation alignment device. Background Technology

[0002] Flange welding is a common fixing method for connecting flanges to pipes. In traditional technology, when welding flanges to pipes, a spirit level is needed to level both the pipe and the flange. After leveling, one person needs to hold the flange while another person welds, and the person holding the flange needs to be very stable in order to weld the flange correctly. However, this method is inefficient, time-consuming and labor-intensive. When faced with batch welding, it is impossible to complete the installation of each pipe and each flange efficiently and with high quality. Summary of the Invention

[0003] This invention provides a flange installation alignment tool to solve the problems of difficult flange installation alignment and low pipeline installation efficiency in the prior art.

[0004] A flange mounting alignment device, comprising:

[0005] The first support mechanism is used to support the flange and can keep the central axis of the flange coincident with the central axis of the first support mechanism.

[0006] The second support mechanism is coaxially connected to the first support mechanism and is used to provide tension support on the inner wall of the pipe. When the second support mechanism is in the tensioned state, its axis coincides with the axis of the pipe and it can move along the axial direction of the pipe.

[0007] According to the flange mounting aligner provided by the present invention, the first support mechanism includes:

[0008] Main shaft;

[0009] The flange support claw body has at least three claws, which are equally distributed about the axis of rotation of the main rod. One end is fixed to the main rod, and the other end is fixed with a through section. The through section is arranged parallel to the main rod and is used to pass through the mounting hole of the flange.

[0010] The number of support rods is the same as the number of flange support claw bodies. One end is fixed to the main rod body, and the other end is fixed to the flange support claw body, which is used to support the flange support claw body.

[0011] According to the flange mounting aligner provided by the present invention, the first support mechanism includes:

[0012] Main shaft;

[0013] The first hinge seat is coaxially fixed to the main rod body;

[0014] The second hinge seat is coaxially and movably sleeved on the main rod body;

[0015] The flange support claw body has at least three claws, which are equally distributed about the axis of rotation of the main rod body. One end is hinged to the first hinge seat, and the other end is hinged to a through section for passing through the mounting hole of the flange.

[0016] The number of support rods is the same as the number of flange support claw bodies. One end is hinged to the second hinge seat, and the other end is hinged to the flange support claw body for supporting the flange support claw body.

[0017] A first locking mechanism is disposed between the flange support claw body and the through section, for restraining the rotation of the through section;

[0018] The second locking mechanism is disposed on the second hinge seat and is used to constrain the sliding of the second hinge seat.

[0019] The flange mounting aligner provided according to the present invention:

[0020] The first locking mechanism includes:

[0021] A ratchet is fixedly installed on the end of the flange support claw body;

[0022] The pawl is elastically and telescopically installed inside the through section, and can engage with the ratchet when not subjected to external force, thereby restraining the rotation of the through section;

[0023] The second locking mechanism includes:

[0024] The set screw is threaded onto the second hinge seat and can press against the main rod body.

[0025] According to the flange mounting aligner provided by the present invention, the through section includes:

[0026] The base rod is hinged to the flange support claw body;

[0027] The first limiting plate is fixedly connected to the other end of the base rod;

[0028] The threaded insert is coaxially fixed to the first limiting plate;

[0029] A sleeve having internal and external threads is threadedly fitted onto the threaded insert.

[0030] The first locking nut is threaded onto the sleeve.

[0031] According to the flange mounting aligner provided by the present invention, the second support mechanism includes:

[0032] A rotating threaded rod is coaxially mounted at one end of the main rod body;

[0033] The auxiliary rod body is coaxially rotatably mounted at the other end of the rotating threaded rod;

[0034] The third hinge seat has an internal threaded through hole along the axial direction and is threaded onto the rotating threaded rod;

[0035] The fourth hinge seat is coaxially fixedly sleeved on the secondary rod body;

[0036] There are at least three first connecting rods, which are equally distributed about the axis of rotation of the secondary rod body, and one end is hinged to the third hinge seat.

[0037] There are at least three second connecting rods, and the number of them is equal to that of the first connecting rods. They correspond one-to-one with the first connecting rods to form multiple sets of connecting rods, and one end of each rod is hinged to the fourth hinge seat.

[0038] The pulley assembly consists of multiple pulleys, each hinged to the other end of a connecting rod.

[0039] A drive mechanism, connected to the rotating threaded rod, is used to provide rotational power to the rotating threaded rod.

[0040] According to the flange mounting aligner provided by the present invention, the driving mechanism includes:

[0041] The rotating shaft is axially disposed in the rotating cavity opened in the main rod body, and one end is coaxially fixed to the rotating threaded rod;

[0042] There are multiple bearings, each disposed within the main shaft body, used to support the rotating shaft;

[0043] The third connecting rod is coaxially fixed to the other end of the rotating shaft and passes through the main rod body. The part extending to the outside is provided with external threads.

[0044] The handle is coaxially fixed to the third connecting rod.

[0045] The second locking nut is threaded onto the third connecting rod.

[0046] According to the flange mounting aligner provided by the present invention, the third connecting rod includes:

[0047] The second limiting plate is located inside the rotating cavity;

[0048] The connecting rod body is coaxially fixed to the second limiting plate;

[0049] A ball bearing groove and multiple balls are provided between the second limiting plate and the inner wall of the main rod.

[0050] The flange installation alignment device provided by this invention supports the flange through a first support mechanism, ensuring that the central axis of the flange coincides with the central axis of the first support mechanism. This ensures the flange is centered within the first support mechanism. Simultaneously, the second support mechanism allows for contraction or tension within the pipeline, accommodating pipes of different diameters. When tensioned, the central axis of the second support mechanism always coincides with the central axis of the pipeline. This ensures that the central axes of the flange, the first support mechanism, and the second support mechanism are all aligned, guaranteeing the flange is always in the correct position. This effectively solves the problems of difficult flange installation alignment and low pipeline installation efficiency in existing technologies, especially in batch alignment scenarios, saving manpower and time.

[0051] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0053] Figure 1 This is a three-dimensional structural diagram of the flange mounting aligner provided by the present invention;

[0054] Figure 2 This is one of the three-dimensional structural schematic diagrams of the first locking mechanism provided by the present invention;

[0055] Figure 3 This is the second three-dimensional structural schematic diagram of the first locking mechanism provided by the present invention;

[0056] Figure 4 This is the third three-dimensional structural schematic diagram of the first locking mechanism provided by the present invention;

[0057] Figure 5 This is a schematic diagram of the three-dimensional structure of the through section provided by the present invention;

[0058] Figure 6 This is a schematic diagram of the longitudinal cross-sectional structure of the drive mechanism provided by the present invention;

[0059] Figure 7 yes Figure 6 Enlarged view at point B;

[0060] Figure 8 yes Figure 6 Enlarged view at point A;

[0061] Figure 9 This is a schematic diagram of the flange support position provided by the present invention;

[0062] Figure 10 This is a schematic diagram of a flange installed on a pipeline according to the present invention;

[0063] Figure 11 This is a schematic diagram of the second support mechanism provided by the present invention in the state of being inside the pipe.

[0064] Figure label:

[0065] 1. The primary supporting institution;

[0066] 101. Main rod body; 1011. Rotating cavity;

[0067] 102. Flange support claw body;

[0068] 103. Through section; 1031. Base rod; 1032. First limiting plate; 1033. Threaded insert; 1034. Sleeve; 1035. First locking nut;

[0069] 104. Support rod; 105. First hinge seat; 106. Second hinge seat; 107. Second locking mechanism;

[0070] 108. First locking mechanism; 1081. Ratchet; 1082. Pawl; 1083. Slide bar; 1084. Upper limit block; 1085. Lower limit block; 1086. Compression spring; 1087. Lever;

[0071] 2. Second support mechanism; 201. Rotary threaded rod; 202. Secondary rod body; 203. Third hinge seat; 204. Fourth hinge seat; 205. Pulley assembly; 206. Second connecting rod;

[0072] 207. Drive mechanism; 2071. Rotating shaft; 2072. Bearing; 2073. Third connecting rod; 2074. Second locking nut; 2075. Handle; 2076. Vertical ball bearing; 2077. Horizontal ball bearing;

[0073] 3. Flange;

[0074] 4. Pipelines; Detailed Implementation

[0075] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0076] The following is combined with Figures 1-11 The illustrated embodiments describe the technical solution of the present invention:

[0077] This invention provides a flange mounting alignment tool, such as... Figure 1 As shown, it includes: a first support mechanism 1 and a second support mechanism 2, wherein the first support mechanism 1 is used to support the flange 3 and can keep the central axis of the flange 3 coincident with the central axis of the first support mechanism 1; the second support mechanism 2 is coaxially connected to the first support mechanism 1 and is used to provide tension support on the inner wall of the pipe 4. When the second support mechanism 2 is in the tensioned state, its axis coincides with the axis of the pipe 4 and can move along the axial direction of the pipe 4.

[0078] Understandably, as long as the flange 3 can be supported and the axes of the first support mechanism 1, the second support mechanism 2, and the flange 3 are all on the same straight line, it is acceptable.

[0079] The flange installation alignment device provided in this embodiment of the invention supports the flange 3 through a first support mechanism 1, ensuring that the central axis of the flange 3 coincides with the central axis of the first support mechanism 1. This ensures that the flange 3 is positioned at the exact center of the first support mechanism 1. Simultaneously, the second support mechanism 2 allows for contraction or tension within the pipe 4, accommodating pipes of different diameters. When tensioned, the central axis of the second support mechanism 2 always coincides with the central axis of the pipe 4. This ensures that the central axes of the flange 3, the first support mechanism 1, and the second support mechanism 2 are all on the same straight line, thus guaranteeing that the flange 3 is always in the correct position. This effectively solves the problems of difficult flange 3 installation alignment and low installation efficiency with the pipe 4 in the prior art, especially in the case of batch alignment, saving manpower and time.

[0080] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 1As shown, the first support mechanism 1 includes: a main rod 101, a flange support claw body 102, and support rods 104. There are at least three flange support claw bodies 102, which are equiangularly distributed about the axis of rotation of the main rod 101. One end is fixed to the main rod 101, and the other end is fixed with a through section 103. The through section 103 is arranged parallel to the main rod 101 and is used to pass through the mounting hole of the flange 3. The number of support rods 104 is the same as the number of flange support claw bodies 102. One end is fixed to the main rod 101, and the other end is fixed to the flange support claw body 102, which is used to support the flange support claw body 102.

[0081] In this embodiment, the flange support claw body 102 has six claws, which are equally distributed around the central axis of the main rod 101. One end is directly fixed to the main rod 101 (not shown in the figure), and the other end is fixed with a through section 103 arranged parallel to each other. The diameter of the through section 103 should be equivalent to the diameter of the through hole on the flange 3, so that it can just pass through the through hole. This ensures that the flange 3 does not wobble and can be coaxial with the main rod 101. Similarly, one end of the support rod 104 is fixed to the flange support claw body 102, and the other end is fixed to the main rod 101 (not shown in the figure). In this way, flanges 3 of the same specification can be supported in batches, which is highly efficient when installing flanges 3 of the same specification in batches. However, this structure is not very versatile. When it comes to pipes 4 or flanges 3 of different specifications, the support structure given in this embodiment has certain limitations.

[0082] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 1 As shown, the first support mechanism 1 includes: a main rod 101, a first hinge seat 105, a second hinge seat 106, a flange support claw body 102, a support rod 104, a first locking mechanism 108, and a second locking mechanism 107. The first hinge seat 105 is coaxially fixed to the main rod 101; the second hinge seat 106 is coaxially movably sleeved on the main rod 101; there are at least three flange support claw bodies 102, which are equiangularly distributed about the axis of rotation of the main rod 101. One end is hinged to the first hinge seat 105, and the other end is hinged to a through section 103 for passing through the mounting hole of the flange 3; the number of support rods 104 is the same as the number of flange support claw bodies 102, one end is hinged to the second hinge seat 106, and the other end is hinged to the flange support claw body 102 for supporting the flange support claw body 102; the first locking mechanism 108 is disposed between the flange support claw body 102 and the through section 103 for constraining the rotation of the through section 103;

[0083] The second locking mechanism 107 is disposed on the second hinge seat 106 and is used to constrain the sliding of the second hinge seat 106.

[0084] In this embodiment, the flange support claw body 102 has six claws, which are equally distributed around the central axis of the main rod 101 as the rotation axis. One end is hinged to the first hinge seat 105, and the other end is hinged to a through section 103. That is, the angle of the through section 103 is adjustable. As the opening of the flange support claw body 102 changes, the through section 103 must always remain parallel to the main rod 101 so that flanges 3 of different sizes can be coaxial with the main rod 101. Of course, in order to accommodate the through hole diameter of flanges 3 of different sizes, the through section 103 in this embodiment adopts a movable sleeve 1034 structure to meet the requirement that the diameter of the through section 103 is slightly smaller than the through hole diameter. The specific structure will be described in the following embodiments.

[0085] The flange mounting alignment device provided in this embodiment, by designing the first support mechanism 1 as a variable diameter support mechanism, can meet the installation requirements of flanges 3 of different sizes, effectively solving the defects caused by the fixed support in the above embodiment.

[0086] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 2 , 3 As shown in Figure 4, the first locking mechanism 108 includes a ratchet 1081 and a pawl 1082, wherein the ratchet 1081 is fixedly installed on the end of the flange support claw body 102; the pawl 1082 is elastically telescopically installed in the through section 103, and can engage with the ratchet 1081 when not subjected to external force, thereby constraining the rotation of the through section 103; the second locking mechanism 107 includes a set screw, which is threadedly installed on the second hinge seat 106 and can press against the main rod body 101.

[0087] In this embodiment, the ratchet 1081 is an incomplete gear, meaning its teeth are normal involute teeth without any bevel. This design ensures that it locks in place and cannot slide in one direction. The angle range of the teeth is within the adjustable range of the through section 103. The elastic telescopic structure of the pawl 1082 mainly includes: the pawl 1082 and a slide rod 1083 fixedly connected to it. The slide rod 1083 passes through an upper limit block 1084. 1084 is fixedly connected to the through section 103, and the lower limit block 1085 is fixedly connected to the slide rod 1083. A compression spring 1086 is sleeved between the upper limit block 1084 and the lower limit block 1085 to give the slide rod 1083 a constant moving force to the ratchet 1081. A lever 1087 is also horizontally installed in the upper part of the slide rod 1083 to facilitate the operator to unlock and adjust the angle of the through section 103. Of course, the through section 103 must be parallel to the main rod body 101 in the end.

[0088] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 5As shown, the through section 103 includes: a base rod 1031, a first limiting plate 1032, a threaded insert 1033, a sleeve 1034, and a first locking nut 1035. The base rod 1031 is hinged to the flange support claw body 102; the first limiting plate 1032 is fixedly connected to the other end of the base rod 1031; the threaded insert 1033 is coaxially fixed to the first limiting plate 1032; the sleeve 1034 has internal and external threads and is threadedly sleeved on the threaded insert 1033; the first locking nut 1035 is threadedly connected to the sleeve 1034.

[0089] In this embodiment, the diameter and specifications of the threaded insert 1033 can be the same, while the sleeve 1034 can have different outer diameters to match the through-hole diameter of flanges 3 of different specifications. This arrangement allows for flexible application to flanges 3 of different sizes.

[0090] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 1 As shown, the second support mechanism 2 includes: a rotating threaded rod 201, a secondary rod body 202, a third hinge seat 203, a fourth hinge seat 204, a first connecting rod, a second connecting rod 206, a pulley assembly 205, and a drive mechanism 207. The rotating threaded rod 201 is coaxially rotatably mounted at one end of the main rod body 101; the secondary rod body 202 is coaxially rotatably mounted at the other end of the rotating threaded rod 201; the third hinge seat 203 has an internal threaded through hole along the axial direction and is threadedly sleeved on the rotating threaded rod 201.

[0091] The fourth hinge seat 204 is coaxially fixedly sleeved on the secondary rod body 202; there are at least three first connecting rods, which are equally distributed about the axis of rotation of the secondary rod body 202, and one end is hinged to the third hinge seat 203; there are at least three second connecting rods, which are equal in number to the first connecting rods, and correspond one-to-one with the first connecting rods to form multiple sets of connecting rods, one end of which is hinged to the fourth hinge seat 204; there are multiple pulley assemblies 205, which are respectively hinged to the other end of each set of connecting rods; the drive mechanism 207 is connected to the rotating threaded rod 201 and is used to provide rotational power to the rotating threaded rod 201.

[0092] In this embodiment, there are three first connecting rods and three second connecting rods 206, all of equal length. One end is hinged to the third hinge seat 203 and the fourth hinge seat 204, respectively, and the other end is hinged to the pulley assembly 205. The overall diameter of the second support mechanism 2 is changed by varying the distance of the third hinge seat 203 to accommodate pipes 4 with different inner diameters. When in tension, its axis coincides with the central axis of the mechanism.

[0093] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 6 , 7As shown in Figure 8, the drive mechanism 207 includes: a rotating shaft 2071, a bearing 2072, a third connecting rod 2073, a handle 2075, and a second locking nut 2074. The rotating shaft 2071 is axially disposed in the rotating cavity 1011 opened in the main rod body 101, and one end is coaxially fixed to the rotating threaded rod 201. There are multiple bearings 2072, which are respectively disposed in the main rod body 101 to support the rotating shaft 2071. The third connecting rod 2073 is coaxially fixed to the other end of the rotating shaft 2071 and passes through the main rod body 101. The part extending to the outside is provided with external threads. The handle 2075 is coaxially fixed to the third connecting rod 2073. The second locking nut 2074 is threadedly sleeved on the third connecting rod 2073.

[0094] In this embodiment, the coaxial connection of the rotating shaft 2071, the third connecting rod 2073, and the handle 2075 allows the diameter change of the second support mechanism 2 to be controlled from outside the pipe 4, thereby tensioning or contracting the second support mechanism 2. At the same time, the external thread on the third connecting rod 2073 and the second locking nut 2074 that engages with the external thread ensure that the rotation of the rotating shaft 2071 is fixed when the second support mechanism 2 is tensioned, thereby fixing the tension state.

[0095] The flange mounting alignment device provided in the embodiments of the present invention, such as Figure 7 and Figure 8 As shown, the third connecting rod 2073 includes: a second limiting plate and a connecting rod body, wherein the second limiting plate is located in the rotating cavity 1011; the connecting rod body is coaxially fixed to the second limiting plate; a ball bearing groove and a plurality of balls are provided between the second limiting plate and the inner wall of the main rod body 101.

[0096] In this embodiment, a plurality of vertical balls 2076 are provided between the second limiting plate and the inner wall of the rotating cavity 1011. Of course, two annular ball grooves are correspondingly opened on the opposite surfaces of the second limiting plate and the inner wall of the rotating cavity 1011 to provide rolling guidance for the vertical balls 2076. A plurality of horizontal balls 2077 are provided between the connecting rod body and the through hole. Similarly, two pairs of ball grooves are correspondingly opened on the inner wall of the hole and the outer wall of the connecting rod body to provide guidance for the horizontal balls 2077.

[0097] The purpose of this design is to reduce the friction between the third connecting rod 2073 and the main rod 101, thereby increasing the service life. At the same time, the second limiting plate prevents the rotating shaft 2071, the third connecting rod 2073, and the rotating threaded rod 201 from moving axially, thus ensuring the stability of the mechanism.

[0098] Figure 9 This example illustrates a flange being supported by an adjustable first support mechanism; Figure 10The example illustrates the state of the second support mechanism 2 being placed inside the pipe 4. Once placed, turning the handle 2075 will cause the second support mechanism 2 to be tensioned inside the pipe 4. Figure 11 This example illustrates the tension state of the second support mechanism 2 within the pipe 4. After tensioning, welding can be performed, allowing for operation by a single person. This device is highly efficient, convenient, and versatile.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flange plate installation aligner characterized by, include: The first support mechanism is used to support the flange and can keep the central axis of the flange coincident with the central axis of the first support mechanism. The second support mechanism is coaxially connected to the first support mechanism and is used to provide tension support on the inner wall of the pipe. When the second support mechanism is in the tensioned state, its axis coincides with the axis of the pipe and it can move along the axial direction of the pipe. The first support mechanism includes: a main rod; The first hinge seat is coaxially fixed to the main rod body; The second hinge seat is coaxially and movably sleeved on the main rod body; The flange support claw body has at least three claws, which are equally distributed about the axis of rotation of the main rod. One end is hinged to the first hinge seat, and the other end is hinged to a through section for passing through the mounting hole of the flange. The number of support rods is the same as the number of flange support claw bodies. One end is hinged to the second hinge seat, and the other end is hinged to the flange support claw body for supporting the flange support claw body. A first locking mechanism is disposed between the flange support claw body and the through section, for restraining the rotation of the through section; The second locking mechanism is disposed on the second hinge seat and is used to constrain the sliding of the second hinge seat; The second support mechanism includes: a rotating threaded rod, which is coaxially rotatably mounted at one end of the main rod body; The auxiliary rod body is coaxially rotatably mounted at the other end of the rotating threaded rod; The third hinge seat has an internal threaded through hole along the axial direction and is threaded onto the rotating threaded rod; The fourth hinge seat is coaxially fixedly sleeved on the secondary rod body; There are at least three first connecting rods, which are equally distributed about the axis of rotation of the secondary rod body, and one end is hinged to the third hinge seat. There are at least three second connecting rods, and the number of them is equal to that of the first connecting rods. They correspond one-to-one with the first connecting rods to form multiple sets of connecting rods, and one end of each rod is hinged to the fourth hinge seat. The pulley assembly consists of multiple pulleys, each hinged to the other end of a connecting rod. A drive mechanism, connected to the rotating threaded rod, is used to provide rotational force to the rotating threaded rod; The first locking mechanism includes: A ratchet is fixedly installed on the end of the flange support claw body; The pawl is elastically and telescopically installed inside the through section, and can engage with the ratchet when not subjected to external force, thereby restraining the rotation of the through section; The second locking mechanism includes: The set screw is threaded onto the second hinge seat and can press against the main rod body.

2. The flange plate set-up aligner of claim 1, wherein, The through section includes: a base rod, which is hinged to the flange support claw body; The first limiting plate is fixedly connected to the other end of the base rod; The threaded insert is coaxially fixed to the first limiting plate; A sleeve having internal and external threads is threadedly fitted onto the threaded insert. The first locking nut is threaded onto the sleeve.

3. The flange mount aligner of claim 1, wherein, The drive mechanism includes: a rotating shaft, which is axially disposed in the rotating cavity opened in the main rod body, and one end is coaxially fixed to the rotating threaded rod; There are multiple bearings, each disposed within the main shaft body, used to support the rotating shaft; A third connecting rod is coaxially fixed to the other end of the rotating shaft and penetrates the main rod body, and the part extending to the outside is provided with external threads; A handle is coaxially fixed to the third connecting rod; A second locking nut is threadedly sleeved on the third connecting rod.

4. The flange plate set-up aligner of claim 3, wherein, The third connecting rod comprises a second limiting plate in the rotating cavity; A connecting rod body is coaxially fixed to the second limiting plate; A ball sliding groove and a plurality of balls are arranged between the second limiting plate and the inner wall of the main rod body.

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