Flange fixing device for welding flange

Abstract

The utility model relates to the technical field of flange clamping and fixing, and discloses a flange fixing device for welding a flange, which comprises a base and a flange body, the flange body is placed on the top side of the base, a plurality of clamping arms are respectively and rotatably mounted on the top side of the base through a plurality of rotating shafts, one end of each clamping arm is provided with a wheel groove, and the other end of each clamping arm is provided with a wheel groove. A wheel body anti-skid mechanism is arranged in a wheel groove in one end of the clamping arm, a plurality of arc-shaped deflection grooves are formed in the top side of the base, and deflection wheels are movably installed in the arc-shaped deflection grooves; according to the utility model, the plurality of clamping arms synchronously deflect around the corresponding rotating shafts, and the rubber layers of the round wheels on the plurality of clamping arms are respectively propped against the outer surface of the periphery of the flange body, so that the position of the flange body is clamped and fixed, and the clamping stability of the flange body is improved; the situation that the flange body is loosened or dislocated when the flange body is welded is avoided, and normal welding operation on the flange body is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange clamping and fixing technical field, especially a kind of flange fixing device for welding flange. BACKGROUND

[0002] Flange is a kind of mechanical assembly for connecting pipeline, valve, pump and other equipment, usually made of metal material (such as steel, stainless steel, etc.); The main function of flange is to connect the end of two devices or pipelines by bolts to form a stable sealing connection to prevent fluid leakage; In the processing and production of welding flange, flange fixing device is needed to fix flange.

[0003] The prior art flange fixing device for welding flange (its authorized announcement number is CN203579071U), which is pushed to the fixed position by the connecting rod under the action of the air pump, so as to clamp the flange and facilitate the welding operation of the flange; But the clamping method of the air pump on the flange, the air pressure fluctuation or unstable air source may cause uneven clamping force of the air pump, thereby affecting the stability of the flange clamping, causing the flange to loosen or dislocation, thereby affecting the normal welding operation of the flange; Therefore, a flange fixing device for welding flange is proposed to solve the above problems. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a flange fixing device for welding flange to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A flange fixing device for welding flange, comprising a base and a flange body, the flange body is placed on the top side of the base, a plurality of clamping arms are rotatably installed on the top side of the base through a plurality of rotating shafts, a wheel groove is formed at one end of each clamping arm, a wheel body anti-skid mechanism is arranged in the wheel groove at one end of the clamping arm, a plurality of arc deflection grooves are formed on the top side of the base, a deflection wheel is movably installed in each arc deflection groove, the top side of each deflection wheel is fixedly connected to the bottom side of one end of the corresponding clamping arm, two translation cavities are formed in the base, a translation mechanism for the corresponding two deflection wheels is arranged in each translation cavity in the base, and a screw rod transmission mechanism for the two translation mechanisms is arranged in the base.

[0007] Preferably, the number of clamping arms is four, and the clamping arms are arranged in L-shaped structure; It is convenient for a plurality of clamping arms to produce deflection around the corresponding rotating shaft.

[0008] Preferably, the wheel body anti-skid mechanism comprises a round wheel and a rubber layer, the round wheel is rotatably installed in the wheel groove at one end of the clamping arm, the outer surface of the round wheel is provided with a rubber layer, and the rubber layer on the round wheel abuts against the outer surface of the flange body; when the rubber layers of the plurality of round wheels respectively abut against the outer surfaces of the flange body around, the flange body is clamped and fixed in position.

[0009] Preferably, the number of the arc-shaped deflection grooves is four, and the deflection wheels are matched with the arc-shaped deflection grooves; the deflection wheels are deflected in the arc-shaped deflection grooves.

[0010] Preferably, the two translation cavities are respectively communicated with the two corresponding arc-shaped deflection grooves, and the two arc-shaped deflection grooves on the translation cavity are symmetrically arranged.

[0011] Preferably, the translation mechanism comprises a translation plate and two U-shaped movable openings, the translation plate is movably installed in the translation cavity, two U-shaped movable openings are respectively formed in the translation plate, and the two deflection wheels are respectively sleeved in the two U-shaped movable openings on the translation plate; when the translation plate slides in the translation cavity, the two deflection wheels in the two U-shaped movable openings on the translation plate are deflected in the corresponding arc-shaped deflection grooves.

[0012] Preferably, the screw transmission mechanism comprises a bidirectional threaded rod, a disc and a handle, one end of the bidirectional threaded rod is rotatably installed on the inner wall of one side of the translation cavity in the base, the other end of the bidirectional threaded rod is respectively threadedly penetrated through the two translation plates and penetrates out of the base and is fixedly installed with the disc, and one side of the disc is fixedly installed with the handle.

[0013] Preferably, two threaded grooves are respectively formed in the bidirectional threaded rod, the threaded directions of the two threaded grooves on the bidirectional threaded rod are opposite, and the two threaded grooves on the bidirectional threaded rod are respectively threadedly penetrated through the two translation plates; since the threaded directions of the two threaded grooves on the bidirectional threaded rod are opposite, when the bidirectional threaded rod rotates, the two translation plates can be synchronously driven to slide in the corresponding translation cavities.

[0014] The flange fixing device for welding flanges has the advantages that:

[0015] The flange fixing device for welding flanges has the advantages that: the handle on the disc is screwed to drive the bidirectional threaded rod to rotate, synchronously drive the two deflection wheels in the two U-shaped movable openings on the two sets of translation plates to be outwardly deflected in the corresponding arc-shaped deflection grooves, so that the plurality of clamping arms are synchronously deflected around the corresponding rotation shafts, and the rubber layers of the round wheels on the plurality of clamping arms abut against the outer surfaces of the flange body around, so that the flange body is clamped and fixed in position, the stability of clamping the flange body is improved, the flange body is prevented from loosening or mispositioning during welding operation, and normal welding operation of the flange body is ensured. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a side sectional view of the structure of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the translation cavity of this utility model.

[0019] Figure 4 This is a structural schematic diagram of the bidirectional threaded rod of this utility model from a perspective.

[0020] In the diagram: 1. Base; 2. Flange body; 3. Clamping arm; 4. Wheel groove; 5. Round wheel; 6. Rubber layer; 7. Arc-shaped deflection groove; 8. Deflection wheel; 9. Translation cavity; 10. Translation plate; 11. U-shaped movable port; 12. Two-way threaded rod; 13. Threaded groove; 14. Disc; 15. Handle. Detailed Implementation

[0021] 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.

[0022] Example: Refer to Figures 1-4 A flange fixing device for welding flanges includes a base 1 and a flange body 2. The flange body 2 is placed on the top side of the base 1. Multiple clamping arms 3 are rotatably mounted on the top side of the base 1 via multiple rotating shafts. One end of each clamping arm 3 is provided with a wheel groove 4. A wheel anti-slip mechanism is provided in the wheel groove 4 at one end of the clamping arm 3. Multiple arc-shaped deflection grooves 7 are provided on the top side of the base 1. Deflection wheels 8 are movably mounted in each of the multiple arc-shaped deflection grooves 7. The top side of each of the multiple deflection wheels 8 is fixedly connected to the bottom side of one end of the corresponding clamping arm 3. Two translation cavities 9 are provided in the base 1. Each of the two translation cavities 9 of the base 1 is provided with a translation mechanism for the two corresponding deflection wheels 8. A screw drive mechanism for the two translation mechanisms is provided in the base 1.

[0023] Furthermore, the number of clamping arms 3 is set to four, and the clamping arms 3 are arranged in an L-shaped structure; this facilitates the multiple clamping arms 3 to deflect around the corresponding rotating axis.

[0024] Specifically, the wheel body anti-skid mechanism comprises the circular wheel 5 and the rubber layer 6, the circular wheel 5 is rotatably installed in the wheel groove 4 at one end of the clamping arm 3, the outer surface of the circular wheel 5 is provided with the rubber layer 6, and the rubber layer 6 on the circular wheel 5 abuts against the outer surface of the flange body 2; when the rubber layers 6 of the plurality of circular wheels 5 abut against the outer surfaces of the flange body 2 around the flange body 2 respectively, the position clamping and fixing of the flange body 2 are realized.

[0025] Further, the number of the arc-shaped deflection grooves 7 is four, and the deflection wheels 8 are matched with the arc-shaped deflection grooves 7; the deflection wheels 8 are deflected in the arc-shaped deflection grooves 7.

[0026] Specifically, the two translation cavities 9 are respectively connected with the corresponding two arc-shaped deflection grooves 7, and the two arc-shaped deflection grooves 7 on the translation cavity 9 are symmetrically arranged.

[0027] Specifically, the translation member mechanism comprises the translation plate 10 and the U-shaped movable port 11, the translation plate 10 is movably installed in the translation cavity 9, two U-shaped movable ports 11 are respectively formed in the translation plate 10, and the corresponding two deflection wheels 8 are respectively sleeved in the two U-shaped movable ports 11 on the translation plate 10; when the translation plate 10 slides in the translation cavity 9, the two deflection wheels 8 in the two U-shaped movable ports 11 on the translation plate 10 are deflected in the corresponding arc-shaped deflection grooves 7.

[0028] Specifically, the screw transmission mechanism comprises the bidirectional threaded rod 12, the disc 14 and the handle 15, one end of the bidirectional threaded rod 12 is rotatably installed on the inner wall of one side of the translation cavity 9 in the base 1, the other end of the bidirectional threaded rod 12 is respectively threadedly penetrated through the two translation plates 10 and penetrates to the outside of the base 1 and is fixedly installed with the disc 14, and one side of the disc 14 is fixedly installed with the handle 15.

[0029] Specifically, two threaded grooves 13 are respectively formed in the bidirectional threaded rod 12, the threaded directions of the two threaded grooves 13 on the bidirectional threaded rod 12 are opposite, and the two threaded grooves 13 on the bidirectional threaded rod 12 are respectively threadedly penetrated through the two translation plates 10; because the threaded directions of the two threaded grooves 13 on the bidirectional threaded rod 12 are opposite, when the bidirectional threaded rod 12 rotates, the two translation plates 10 are synchronously driven to slide in the corresponding translation cavities 9.

[0030] In use: when fixing the flange body 2 to be welded, the worker places the flange body 2 to be welded on the top side of the base 1, rotates the two-way threaded rod 12 by screwing the handle 15 on the disc 14, and synchronously drives the two translation plates 10 to slide away from each other in the corresponding translation cavities 9 due to the opposite rotation direction of the two threaded grooves 13 on the two-way threaded rod 12, and drives the two deflection wheels 8 in the two U-shaped movable mouths 11 on the two translation plates 10 to deflect outward in the corresponding arc-shaped deflection grooves 7, so that the plurality of clamping arms 3 are synchronously deflected around the corresponding rotating shafts, and the rubber layers 6 of the plurality of clamping arms 3 are respectively abutted on the outer surfaces of the flange body 2, so as to realize the position clamping and fixing of the flange body 2, avoid the loosening or misplacement of the flange body 2 during the welding operation of the flange body 2, and ensure the normal welding operation of the flange body 2.

[0031] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application.

Claims

1. A flange fixture for welding a flange, comprising a base (1) and a flange body (2), characterized in that, The flange body (2) is placed on the top side of the base (1), the top side of the base (1) is rotatably provided with a plurality of clamping arms (3) through a plurality of rotating shafts, one end of the plurality of clamping arms (3) is provided with a wheel groove (4), the wheel groove (4) at one end of the clamping arm (3) is provided with a wheel body anti-skid mechanism, the top side of the base (1) is provided with a plurality of arc deflection grooves (7), the arc deflection grooves (7) are movably provided with a deflection wheel (8), the top side of the plurality of deflection wheels (8) is fixedly connected with one end of the corresponding clamping arm (3), the base (1) is provided with two translation cavities (9), the two translation cavities (9) in the base (1) are provided with a translation mechanism for the corresponding two deflection wheels (8), and the base (1) is provided with a screw rod transmission mechanism for the two translation mechanisms.

2. A flange fixture for welding flanges as defined in claim 1, wherein The number of clamping arms (3) is four, and the clamping arms (3) are provided in an L-shaped structure.

3. A flange fixture for welding flanges according to claim 2, wherein The wheel body anti-skid mechanism comprises a circular wheel (5) and a rubber layer (6), the wheel groove (4) at one end of the clamping arm (3) is rotatably provided with a circular wheel (5), the outer surface of the circular wheel (5) is provided with a rubber layer (6), and the rubber layer (6) on the circular wheel (5) abuts against the outer surface of the flange body (2).

4. The flange fixture for welding a flange according to claim 1, wherein The number of arc deflection grooves (7) is four, and the deflection wheel (8) is matched with the arc deflection groove (7).

5. A flange fixture for welding flanges as defined in claim 4, wherein The two translation cavities (9) are respectively connected with the corresponding two arc deflection grooves (7), and the two arc deflection grooves (7) on the translation cavity (9) are symmetrically arranged.

6. A flange fixture for welding flanges according to claim 5, wherein The translation mechanism comprises a translation plate (10) and a U-shaped movable port (11), the translation plate (10) is movably arranged in the translation cavity (9), two U-shaped movable ports (11) are respectively formed in the translation plate (10), and the corresponding two deflection wheels (8) are respectively sleeved in the two U-shaped movable ports (11) on the translation plate (10).

7. A flange fixture for welding flanges according to claim 6, characterized in that The screw rod transmission mechanism comprises a bidirectional threaded rod (12), a disc (14) and a handle (15), one end of the bidirectional threaded rod (12) is rotatably arranged on the inner wall of the translation cavity (9) in the base (1), the other end of the bidirectional threaded rod (12) is respectively threaded through the two translation plates (10) and penetrates out of the base (1) and is fixedly provided with a disc (14), and one side of the disc (14) is fixedly provided with a handle (15).

8. A flange fixture for welding flanges according to claim 7, characterized in that Two threaded grooves (13) are respectively formed in the bidirectional threaded rod (12), the threads of the two threaded grooves (13) on the bidirectional threaded rod (12) are opposite in direction, and the two threaded grooves (13) on the bidirectional threaded rod (12) are respectively threaded through the two translation plates (10).

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