Pressing and positioning tool for flange

Abstract

The pressing and positioning tool comprises a base, a supporting frame, a rotating assembly and a plurality of positioning assemblies suitable for being matched with the flange in a clamped mode, the supporting frame is arranged on the upper end face of the base and suitable for moving telescopically along the base, the rotating assembly comprises a rotating ring and an installation disc, the installation disc is fixedly installed on one side of the supporting frame, and the positioning assemblies are arranged on the supporting frame. The rotating ring is rotatably arranged on the outer side of the mounting disc in a sleeving mode, the flange is separably arranged on the side, away from the supporting frame, of the mounting disc, and the positioning assemblies are arranged on the rotating ring in the circumferential direction of the flange and suitable for being arranged in one-to-one correspondence with the corners of the flange; according to the flange welding device, the positioning assemblies are arranged on the mounting disc, so that each positioning assembly corresponds to the corner of the flange and is clamped and matched with the corner of the flange, the flange is fixed to the mounting disc, the flange is attached to the exhaust pipe or the rear axle housing to complete welding of the flange while the flange is clamped, operation is convenient, shaking is not likely to happen, and the welding effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of installation equipment, in particular to a pressing and positioning tool for a flange. Background Art

[0002] Flange, also known as flange flange or flange. Flange is a part that connects various pipelines to each other. It is used to connect the ends of pipes. It is also used as flange on the inlet and outlet of equipment, used to connect two equipments, such as reducer flange. Flange is widely used and is loved by all walks of life. In the automotive field, the rear axle housing and exhaust pipe are important parts.

[0003] For the rear axle housing of a car, the flange is an important component that connects the entire axle and the wheel. When the car is driving, the road reaction force and torque borne by the wheel are transmitted to the entire axle through the wheel, etc., so the flange welding requirements of the rear axle housing are very strict. For the exhaust pipe of a car, the exhaust pipe is composed of a flange and a functional section, and the various parts are mainly connected by welding. Among them, the connection between the flange and the air pipe is the key to the entire welding, which is related to the normal use of the entire exhaust pipe.

[0004] In the prior art, the positioning of the flange, the exhaust pipe and the rear axle housing is inconvenient, the operation is troublesome, and the welding effect is affected.

[0005] Therefore, the utility model is dedicated to providing a clamping and positioning tool for flanges to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to provide a clamping and positioning tool for a flange, which can fix the flange on a support frame through a plurality of positioning components, eliminating the need for workers to hold the flange for welding, and can also make the flange fit tightly with the exhaust pipe or the rear axle housing by moving the support frame, thereby reducing the shaking of the flange during welding and ensuring the welding effect.

[0007] The technical solution provided by the utility model is as follows:

[0008] A clamping and positioning tool for a flange, comprising a base, a support frame, a rotating assembly and a plurality of positioning assemblies suitable for clamping and cooperating with the flange, wherein the support frame is arranged on the upper end surface of the base and is suitable for telescopic movement along the base;

[0009] The rotating assembly comprises a rotating ring and a mounting plate, wherein the mounting plate is fixedly mounted on one side of the supporting frame, the rotating ring is rotatably sleeved on the outer side of the mounting plate, and the flange is detachably arranged on a side of the mounting plate away from the supporting frame;

[0010] The positioning components are arranged on the rotating ring along the circumference of the flange and are suitable for being arranged one-to-one with the corners of the flange, wherein the rotating ring is braked so that each of the positioning components corresponds to the corners of the flange respectively and snaps into fit to fix the flange on the mounting plate.

[0011] In some embodiments, a first handle is further included, wherein the first handle is disposed on the rotating ring and uses a preset force to push the rotating ring to rotate;

[0012] and / or

[0013] It also includes a second handle arranged on the support frame, which uses a preset force to push the support frame to move telescopically along the base.

[0014] In some embodiments, a pushing assembly for applying force to the support frame is further included, wherein the pushing assembly is disposed on the base and connected to the support frame so that the flange is tightly attached to the external device.

[0015] In some embodiments, the support frame includes a frame body and a connection plate disposed on one side of the frame body, and the frame body is movably disposed on the base;

[0016] A circular extension portion is arranged on a side of the connection plate away from the frame body, the installation plate is arranged on a side of the extension portion away from the connection plate, and the rotating ring is rotatably sleeved on the outer sides of the extension portion and the installation plate.

[0017] In some embodiments, a limited notch is provided on a side of the rotating ring away from the supporting frame, and the positioning assembly includes a gasket, a pressing block and a locking member;

[0018] The gasket is arranged on the bottom wall of the limiting notch, one end of the pressing block is arranged on a side of the gasket away from the bottom wall of the limiting notch, and the other end of the pressing block is located in the inner ring of the rotating ring and is suitable for contacting and extruding with the corner of the flange;

[0019] The locking piece is used to fix the gasket and the pressing block in the limiting notch.

[0020] In some embodiments, a driving assembly is further included, and the driving assembly is drivingly connected to the rotating ring to drive the rotating ring to rotate, thereby separating the positioning assembly from the flange.

[0021] In some embodiments, the pushing assembly includes a first cylinder and a transmission arm, the first cylinder is disposed on the base and located on one side of the support frame, the transmission arm is vertically disposed at the output end of the first cylinder, and one end of the transmission arm away from the output end of the first cylinder is connected to the support frame.

[0022] In some embodiments, the driving assembly includes a second cylinder, a first connecting member, a second connecting member and a horizontally arranged support plate, one end of the first connecting member is arranged on the outer side wall of the rotating ring, and one end of the support plate is arranged on a side of the frame body away from the rotating assembly;

[0023] One end of the second cylinder is hinged to the other end of the first connecting member, one end of the second connecting member is hinged to the end of the support plate away from the frame body, and the other end of the second connecting member is hinged to the end of the second cylinder away from the first connecting member.

[0024] In some embodiments, a limiting protrusion is provided on a side of the connecting plate away from the frame body, and an arc-shaped slide rail matching with the limiting protrusion is provided on the rotating ring, and one end of the limiting protrusion extends into the arc-shaped slide rail.

[0025] In some embodiments, a mounting groove matched with the flange is provided on a side of the mounting plate away from the support frame, and a depth of the mounting groove is slightly smaller than a thickness of the flange.

[0026] The clamping and positioning tool for flange provided by the utility model has the following beneficial effects:

[0027] 1. The utility model provides a clamping and positioning tool for a flange. Rotating the rotating ring can drive the positioning component to rotate, so that the corners of the positioning component and the flange are locked with each other, and the flange is fixed on the mounting plate without shaking easily, avoiding the staff from holding the flange by hand. Moreover, the flange can be easily fitted on the exhaust pipe or the rear axle frame by moving the support frame, which reduces the labor intensity of the staff, reduces the shaking of the flange in the welding project, and ensures the welding effect.

[0028] 2. The utility model provides a clamping and positioning tool for a flange. During welding, the support frame can be pushed to move by the second handle. During welding, the staff always applies a suitable force to the second handle to make the flange fit tightly.

[0029] 3. The utility model provides a clamping and positioning tool for the flange, which not only applies force to the second handle to ensure the flange fits tightly, but also applies force to the support frame through the pushing assembly to ensure the flange fits tightly, further reducing the labor intensity of the staff.

[0030] 4. The utility model provides a clamping and positioning tool for flanges, wherein the locking member is suitable for fixing the gasket and the clamping block in the limiting notch, and the staff can replace gaskets of different thicknesses to make the positioning assembly suitable for flanges of different thicknesses.

[0031] 5. The utility model provides a clamping and positioning tool for a flange. After the flange welding is completed, the second cylinder can drive the rotating ring to rotate to release the limit of the positioning component on the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution.

[0033] Figure 1 This is a structural schematic diagram of a compression and positioning tool for a flange provided by the utility model;

[0034] Figure 2 This is a rear view of a compression and positioning tool for a flange provided by the utility model;

[0035] Figure 3 The utility model is a cross-sectional view of a rotating ring of a flange pressing and positioning tool.

[0036] Description of Figure Numbers:

[0037] Base 1, support frame 2, second handle 21, connecting plate 22, extension portion 221, mounting plate 23, limiting protrusion 231, rotating assembly 3, rotating ring 31, first handle 311, arc-shaped slide rail 312, positioning assembly 4, gasket 41, clamping block 42, pushing assembly 5, first cylinder 51, transmission arm 52, driving assembly 6, second cylinder 61, first connecting member 62, second connecting member 63, support plate 64, flange 7. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0039] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0040] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0042] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

[0043] In one embodiment, a clamping and positioning tool for a flange is described, which arranges a positioning assembly 4 on a rotating ring 31 so that the rotating ring 31 rotates and contacts and squeezes the flange 7, thereby fixing the flange 7 on the support frame 2, and by pushing the support frame 2 to move, the flange 7 is kept in contact with the exhaust pipe or the rear axle housing, thereby achieving welding and fixation of the two, with good welding effect and easy operation.

[0044] Specifically, see the attached drawings of the specification Figures 1 to 3 A clamping and positioning tool for a flange includes a base 1, a support frame 2, a rotating assembly 3 and a positioning assembly 4, wherein the positioning assembly 4 is provided in a plurality and is suitable for engaging with a flange 7. The support frame 2 is provided on the upper end surface of the base 1 and is suitable for telescopic movement along the base 1, thereby adjusting the distance between the support frame 2 and the exhaust pipe or the rear axle housing. Accordingly, the rotating assembly 3 includes a rotating ring 31 and a mounting plate 23, wherein the mounting plate 23 is provided on one side of the support frame 2 and is connected and fixed to the support frame 2. The rotating ring 31 is rotatably provided and sleeved on the outer side of the mounting plate 23, and the flange 7 is detachably provided on the side of the mounting plate 23 away from the support frame 2.

[0045] The positioning components 4 are arranged on the rotating ring 31, and can rotate with the rotation of the rotating ring 31 to adjust the positional relationship of each positioning component 4 relative to the flange 7. Among them, a plurality of positioning components 4 are suitable for being arranged corresponding to the corners of the flange 7, that is, the number of the positioning components 4 is the same as the number of the corners of the flange 7, and each positioning component 4 can correspond to the corner of the flange 7.

[0046] Several positioning components 4 are arranged along the circumference of the flange 7, and the projections of several positioning components 4 on the mounting plate 23 are suitable for coinciding with the corners of the flange 7. In this way, the rotating ring 31 is rotated so that the rotating ring 31 rotates relative to the mounting plate 23 and the flange 7, thereby adjusting the positional relationship of each positioning component 4 relative to the flange 7. When the projections of several positioning components 4 on the mounting plate 23 coincide with the corners of the flange 7, several positioning components 4 are respectively engaged with one corner of the flange 7, thereby fixing the flange 7 on the mounting plate 23.

[0047] It is understandable that in the prior art, when welding the flange, the worker usually holds the flange and then places the flange on the exhaust pipe or the rear axle frame, and then welds the flange. However, in this process, the worker needs to hold the flange for a long time, which easily leads to fatigue, resulting in inaccurate positioning of the flange, which results in poor welding effect between the flange and the exhaust pipe or the rear axle frame.

[0048] In this embodiment, when in use, the flange 7 is first set on the side of the mounting plate 23 away from the support frame 2, and then the rotating ring 31 is rotated until the positioning assembly 4 is engaged with the corner of the flange 7, thereby completing the compression installation of the flange 7. In this process, the worker is prevented from holding the flange 7. Then the support frame 2 is pushed toward the exhaust pipe or the rear axle housing until the flange 7 contacts the exhaust pipe or the rear axle housing. During the welding process, the worker can always apply force to the support frame 2 to ensure that the flange 7 is tightly attached to the exhaust pipe or the rear axle housing. Compared with the worker holding the flange 7 and attaching it to the exhaust pipe or the rear axle housing, the worker's fatigue can be reduced and the welding effect can be ensured.

[0049] In addition, in the instruction manual Figure 1 In the figure, flange 7 is a triangular flange. In actual production applications, the clamping and positioning tooling can also be applied to other types of regular polygonal flanges. After ensuring that the positioning component 4 is in contact and limited with the corners of the flange 7, it does not engage with other parts of the flange 7. It is not described in detail here and is within the protection scope of the present utility model.

[0050] In one embodiment, referring to the accompanying drawings, Figures 1 to 3This embodiment further illustrates a clamping and positioning tool for a flange, and also includes a first handle 311. The first handle 311 is arranged on the rotating ring 31, so that the staff can use a preset force to push the first handle 311, thereby pushing the rotating ring 31 to rotate, so that the positioning component 4 and the flange 7 are engaged at an angle.

[0051] Correspondingly, the clamping and positioning tool can also include a second handle 21, which is arranged on the support frame 2, so that the staff can use a preset force to push the second handle 21 and continue to apply force to the second handle 21 to press the flange 7 tightly against the exhaust pipe or the rear axle housing. The operation is convenient and the labor intensity of the staff is reduced.

[0052] Furthermore, a clamping and positioning tool for a flange also includes a push assembly 5 capable of applying force to the support frame 2. The push assembly 5 is arranged on the base 1 and connected to the support frame 2 so that the flange 7 is tightly attached to the external device.

[0053] It is understandable that after the flange 7 is fixed on the mounting plate 23 through the positioning assembly 4 by setting the second handle 21, the staff can push the second handle 21 to make the flange 7 fit on the external device (exhaust pipe or rear axle housing), and then continue to apply force to the second handle 21 to ensure that the flange 7 is tightly attached to the external device (exhaust pipe or rear axle housing). Of course, after the staff can push the second handle 21 to make the flange 7 fit on the external device (exhaust pipe or rear axle housing), the pushing assembly 5 can be used to apply force to the support frame 2 to ensure that the flange 7 is tightly attached to the external device (exhaust pipe or rear axle housing), without the need for the staff to push manually, further reducing the labor intensity of the staff, and can effectively reduce the possibility of shaking of the support frame 2 caused by human factors, further ensuring the stability and effect of welding.

[0054] Furthermore, the pushing assembly 5 includes a first cylinder 51 and a transmission arm 52. The first cylinder 51 is arranged on the base 1 and is located on one side of the support frame 2. The transmission arm 52 is vertically arranged at the output end of the first cylinder 51. One end of the transmission arm 52 away from the output end of the first cylinder 51 is connected to the support frame 2.

[0055] When in use, gas is injected into the first cylinder 51 so that the first cylinder 51 applies force to the support frame 2 through the transmission arm 52, thereby making the flange 7 close to the exhaust pipe or the rear axle housing.

[0056] In one embodiment, referring to the accompanying drawings, Figures 1 to 3, this embodiment further describes the support frame 2. The support frame 2 includes a frame body and a connection plate 22 disposed on one side of the frame body, that is, the connection plate 22 is disposed on a side of the frame body close to the exhaust pipe or the rear axle housing. Accordingly, the frame body is movably disposed on the base 1, and an extension portion 221 is disposed on a side of the connection plate 22 away from the frame body, and the extension portion 221 is circular.

[0057] In addition, the mounting plate 23 is arranged on a side of the extension portion 221 away from the connection plate 22, and the rotating ring 31 is rotatably mounted on the outer side of the extension portion 221 and the mounting plate 23, so that the rotating ring 31 can rotate relative to the mounting plate 23. The second handle 21 is arranged on the frame body, and the push assembly 5 is connected to the frame body.

[0058] Furthermore, the rotating ring 32 is provided with limiting notches corresponding to a plurality of positioning components 4, so that each positioning component 4 is respectively arranged in the limiting notch. The positioning component 4 includes a gasket 41, a clamping block 42 and a locking member. The limiting notch is arranged on the side of the rotating ring 31 away from the support frame 2, the gasket 41 is arranged on the bottom wall of the limiting notch, one end of the clamping block 42 is arranged on the side of the bottom wall of the gasket 41 away from the limiting notch, and the other end of the clamping block 42 extends out of the limiting notch and is located in the inner ring of the rotating ring 31. Accordingly, a gap is left between one end of the clamping block 42 and the mounting plate 23. When the rotating ring 31 rotates, the corner end of the flange 7 extends into the gap, and then the clamping block 41 contacts and squeezes the corner end of the flange 7, thereby fixing the flange 7 on the mounting plate 23.

[0059] Preferably, a friction plate is provided on the other end of the clamping block 42 close to the mounting plate 23 to increase the friction force between the clamping block 42 and the flange 7 , thereby improving the matching effect between the positioning assembly 4 and the flange 7 .

[0060] Correspondingly, the locking member is suitable for fixing the gasket 41 and the pressing block 42 in the limiting notch.

[0061] Specifically, the locking member is configured as a bolt, and threaded holes that are interconnected are provided on the mounting plate 23 , the gasket 41 and the clamping block 42 . The bolt penetrates into the threaded hole to thereby realize the installation and fixation of the mounting plate 23 , the gasket 41 and the clamping block 42 .

[0062] It is understandable that, when dealing with flanges 7 of different thicknesses, the staff can remove the bolts and replace the gaskets 41 of different thicknesses to satisfy the extrusion contact of the pressing block 42 on the flange 7 .

[0063] Of course, in actual production applications, the locking member can also be set to other structures to achieve the purpose of being suitable for different flanges 7, which are not described here one by one and are all within the protection scope of the present utility model.

[0064] In one embodiment, this embodiment further describes a clamping and positioning tool for a flange, wherein the positioning and clamping tool further includes a driving assembly 6, which is in transmission connection with the rotating ring 31 to drive the rotating ring 31 to rotate, thereby separating the positioning assembly 4 from the flange 7.

[0065] It should be pointed out that after the staff rotates the rotating ring 31 by pulling the handle, the positioning assembly 4 is connected and matched with the flange 7. After the flange 7 is welded to the exhaust pipe or the rear axle housing, the driving assembly 6 drives the rotating ring 31 to rotate, so that the positioning assembly 4 is separated from the flange 7, thereby removing the flange 7 from the mounting plate 23, which is easy to operate.

[0066] Further, the driving assembly 6 includes a second cylinder 61, a first connecting member 62, a second connecting member 63 and a support plate 64, the support plate 64 is arranged horizontally, and one end of the support plate 64 is arranged on the side of the frame body away from the rotating assembly 3. Correspondingly, one end of the first connecting member 62 is arranged on the outer side wall of the rotating ring 31, one end of the second cylinder 61 is hingedly arranged with the other end of the first connecting member 62, one end of the second connecting member 63 is hingedly arranged with one end of the support plate 64 away from the frame body, and the other end of the second connecting member 63 is hingedly arranged with one end of the second cylinder 61 away from the first connecting member 62. In this way, the second cylinder 61 telescopically moves to drive the rotating ring 31 to rotate.

[0067] Preferably, a limiting protrusion 231 is provided on the side of the connecting plate 22 away from the frame body, an arc-shaped slide rail 312 matching with the limiting protrusion 231 is provided on the rotating ring 31, and one end of the limiting protrusion 313 away from the mounting plate 23 extends into the arc-shaped slide rail 312.

[0068] It is understandable that the arrangement of the arc-shaped slide rail 312 and the limiting protrusion 231 can ensure that the rotating ring 31 rotates within a certain angle range, prevent the rotating ring 31 from rotating too much, and ensure that the second cylinder 61 smoothly drives the rotating ring 31 to rotate.

[0069] In one embodiment, a mounting groove matching with the flange 7 is provided on one side of the mounting plate 23 away from the support frame 2, and the depth of the mounting groove is slightly less than the thickness of the flange 7, so as to enhance the connection strength between the positioning assembly 4 and the clamping block 42. It is understandable that the other end of the clamping block 42 does not contact the mounting plate 23, and when the clamping block 42 corresponds to the end of the flange 7, the other end of the clamping block 42 contacts and squeezes with the side of the flange 7 away from the bottom of the mounting groove.

[0070] Of course, a plurality of positioning posts may be provided in the installation groove, and positioning holes matching with the positioning posts may be provided on the flange 7, and the positioning posts may be inserted into the positioning holes to install the flange 7 in the installation groove.

[0071] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A clamping and positioning tool for a flange, characterized in that: It comprises a base, a support frame, a rotating assembly and a plurality of positioning assemblies suitable for clamping with the flange, wherein the support frame is arranged on the upper end surface of the base and is suitable for telescopic movement along the base; The rotating assembly comprises a rotating ring and a mounting plate, wherein the mounting plate is fixedly mounted on one side of the supporting frame, the rotating ring is rotatably sleeved on the outer side of the mounting plate, and the flange is detachably arranged on a side of the mounting plate away from the supporting frame; The positioning components are arranged on the rotating ring along the circumference of the flange and are suitable for being arranged one-to-one with the corners of the flange, wherein the rotating ring is braked so that each of the positioning components corresponds to the corners of the flange respectively and snaps into fit to fix the flange on the mounting plate.

2. A clamping and positioning tool for flange according to claim 1, characterized in that: It also includes a first handle, which is disposed on the rotating ring and uses a preset force to push the rotating ring to rotate; and / or It also includes a second handle arranged on the support frame, which uses a preset force to push the support frame to move telescopically along the base.

3. A clamping and positioning tool for flange according to claim 2, characterized in that: It also includes a pushing assembly for applying force to the support frame, wherein the pushing assembly is arranged on the base and connected to the support frame so that the flange is tightly attached to the external device.

4. A clamping and positioning tool for flange according to any one of claims 1 to 3, characterized in that: The support frame includes a frame body and a connection plate arranged on one side of the frame body, and the frame body is movably arranged on the base; A circular extension portion is arranged on a side of the connection plate away from the frame body, the installation plate is arranged on a side of the extension portion away from the connection plate, and the rotating ring is rotatably sleeved on the outer sides of the extension portion and the installation plate.

5. A clamping and positioning tool for flange according to claim 4, characterized in that: A limiting notch is provided on one side of the rotating ring away from the supporting frame, and the positioning assembly includes a gasket, a pressing block and a locking piece; The gasket is arranged on the bottom wall of the limiting notch, one end of the pressing block is arranged on a side of the gasket away from the bottom wall of the limiting notch, and the other end of the pressing block is located in the inner ring of the rotating ring and is suitable for contacting and extruding with the corner of the flange; The locking piece is used to fix the gasket and the pressing block in the limiting notch.

6. A clamping and positioning tool for flange according to claim 5, characterized in that: It also includes a driving component, which is in driving connection with the rotating ring to drive the rotating ring to rotate, thereby separating the positioning component from the flange.

7. A clamping and positioning tool for flange according to claim 3, characterized in that: The pushing assembly includes a first cylinder and a transmission arm. The first cylinder is arranged on the base and located on one side of the support frame. The transmission arm is vertically arranged at the output end of the first cylinder. One end of the transmission arm away from the output end of the first cylinder is connected to the support frame.

8. A clamping and positioning tool for flange according to claim 6, characterized in that: The driving assembly includes a second cylinder, a first connecting member, a second connecting member and a horizontally arranged supporting plate, one end of the first connecting member is arranged on the outer side wall of the rotating ring, and one end of the supporting plate is arranged on a side of the frame body away from the rotating assembly; One end of the second cylinder is hinged to the other end of the first connecting member, one end of the second connecting member is hinged to the end of the support plate away from the frame body, and the other end of the second connecting member is hinged to the end of the second cylinder away from the first connecting member.

9. A clamping and positioning tool for flange according to claim 8, characterized in that: A limiting protrusion is arranged on one side of the connection plate away from the frame body, and an arc-shaped slide rail matched with the limiting protrusion is arranged on the rotating ring, and one end of the limiting protrusion extends into the arc-shaped slide rail.

10. A pressing and positioning tool for flange according to claim 4, characterized in that: A mounting groove matched with the flange is arranged on one side of the mounting plate away from the supporting frame, and the depth of the mounting groove is slightly smaller than the thickness of the flange.

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