Fixing clamp for welding

Abstract

The utility model relates to the technical field of welding auxiliary equipment, in particular to a fixing clamp for welding, which comprises two groups of mounting plates, moving plates are respectively arranged below the two groups of mounting plates, threaded shafts are rotatably mounted on the lower sides of the mounting plates, the lower ends of the threaded shafts are matched with threads to rotatably penetrate through the moving plates and are provided with hand wheels, and sliding rods are respectively and rotatably mounted at four corners of the upper sides of the moving plates. Meshed gears are installed on the outer sides of the lower portions of the two sets of sliding rods correspondingly, and a set of motors is installed on the lower side of the movable plate. And a positioning shaft is installed on the upper side of the limiting block, the outer side of the positioning shaft is slidably sleeved with a fixed clamping cylinder, and a supporting roller is installed in the middle of the upper side of the installation plate. Compared with the prior art, the pipeline conveying device has the advantages that the fixing clamping barrels have various sizes and can be selectively installed according to the size of a pipeline, installation and detachment are convenient, and the upper portions of the two fixing clamping barrels are pressed on the upper portion of the outer side of the pipeline, so that stable conveying of the pipeline can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding auxiliary equipment, in particular to a fixing fixture for welding. Background Art

[0002] At present, when pipes are butt-welded, if they are not limited and fixed during welding, they are prone to shaking, thereby affecting the welding at the butt-welding point. Therefore, a fixed clamp is used to fix the butt-welded pipes during butt welding.

[0003] The existing fixing clamps for pipe butt welding have a fixed installation structure. The distance between the two sets of clamps is inconvenient to adjust, and it is also inconvenient to replace the clamps according to the pipe size. As a result, the adaptability width of the fixing clamps is limited, and it is impossible to effectively fix and clamp pipes of different diameters, and the scope of application is limited.

[0004] In view of this, a welding fixing jig which is easy to replace is proposed to deal with the above-mentioned problem. Utility Model Content

[0005] 1. Technical Problems Solved

[0006] The technical problem to be solved by the utility model is that the clamp is a fixed installation structure, the distance between two groups of clamps is inconvenient to adjust, and the clamps are inconvenient to replace according to the size of the pipeline.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the technical solution provided by the utility model is: a fixing fixture for welding, comprising two groups of mounting plates, movable plates are respectively provided under the two groups of mounting plates, a threaded shaft is rotatably installed on the lower side of the mounting plate, the lower end of the threaded shaft cooperates with the thread to rotate through the movable plate and is installed with a handwheel, sliding rods are rotatably installed at the four corners of the upper side of the movable plate, meshing gears are respectively installed on the outer sides of the lower parts of the two groups of sliding rods, and a group of motors driving the sliding rods are installed on the lower side of the movable plate.

[0009] The upper end of the sliding rod slides through the mounting plate and is installed with a limit block, a positioning shaft is installed on the upper side of the limit block, a fixed clamp is slidingly sleeved on the outer side of the positioning shaft, a positioning nut is threadedly installed on the outer side of the upper part of the positioning shaft, and a supporting roller is installed on the middle part of the upper side of the mounting plate.

[0010] As an improvement, the upper radius of the fixed clamp is larger than the lower radius, and the upper side surface is an arc-shaped structure.

[0011] As an improvement, two groups of mounting blocks are installed on the upper side of the mounting plate, the supporting roller is rotatably installed between the two groups of mounting blocks, and the side surface of the supporting roller is an arc-shaped structure.

[0012] As an improvement, a groove is provided on the upper side of the mounting plate and between the two groups of mounting blocks, and the lower part of the supporting roller is located inside the groove.

[0013] As an improvement, the gear is installed on the outside of the slide rod installed on the upper sides of the two corners close to the two sets of moving plates, and the motor is connected to the lower end of a set of slide rods on the outside of which the gear is installed.

[0014] As an improvement, a plurality of groups of limiting insert strips are provided on the outer side of the positioning shaft, and a plurality of groups of limiting sliding grooves for the limiting insert strips to slide through are provided on the inner wall of the fixed clamping cylinder.

[0015] As an improvement, an anti-slip sleeve is installed on the outer wall of the fixed clamp.

[0016] As an improvement, a U-shaped mounting frame is connected between the lower sides of the two groups of mounting plates, and the U-shaped mounting frame is provided with multiple groups of mounting holes.

[0017] 3. Beneficial Effects

[0018] Compared with the prior art, the utility model has the following advantages: the pipeline is clamped by two groups of fixed clamps and supporting rollers; the fixed clamps are sleeved on the outside of the positioning shaft and are easy to install and disassemble; the fixed clamps are available in various sizes and can be selected and installed according to the size of the pipeline; the fixed clamps can be adjusted up and down; the upper parts of the two groups of fixed clamps are pressed on the upper part of the outer side of the pipeline, thereby ensuring that the pipeline can be transported stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of the upper structure of a fixing fixture for welding.

[0020] Figure 2 The utility model is a schematic diagram of the lower structure of a fixing fixture for welding.

[0021] Figure 3 The utility model is a schematic diagram of a sliding rod connection structure of a welding fixing fixture.

[0022] Figure 4 The utility model is a schematic diagram of the structure of a fixing clamp of a welding fixing fixture.

[0023] Figure 5 The utility model is a schematic diagram of a mounting plate connection structure of a fixing fixture for welding.

[0024] As shown in the figure: 1. Mounting plate; 2. U-shaped mounting frame; 3. Moving plate; 4. Threaded shaft; 5. Handwheel; 6. Slide rod; 7. Limit block; 8. Positioning shaft; 9. Fixed clamp; 10. Limit insert; 11. Limit slide groove; 12. Anti-slip sleeve; 13. Positioning nut; 14. Gear; 15. Motor; 16. Groove; 17. Mounting block; 18. Support roller; 19. Mounting hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] As attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, a fixing fixture for welding comprises two groups of mounting plates 1, and movable plates 3 are respectively provided under the two groups of mounting plates 1, and a threaded shaft 4 is rotatably installed on the lower side of the mounting plate 1. The lower end of the threaded shaft 4 rotates through the movable plate 3 in cooperation with the thread and is installed with a handwheel 5, and sliding rods 6 are rotatably installed at the four corners of the upper side of the movable plate 3, and meshing gears 14 are respectively installed on the outer sides of the lower parts of the two groups of sliding rods 6, and a group of motors 15 for driving the sliding rods 6 are installed on the lower side of the movable plate 3.

[0027] The upper end of the slide rod 6 slides through the mounting plate 1 and is installed with a limit block 7, a positioning shaft 8 is installed on the upper side of the limit block 7, a fixed clamp 9 is slidably sleeved on the outer side of the positioning shaft 8, a positioning nut 13 is threadedly installed on the outer side of the upper part of the positioning shaft 8, and a support roller 18 is installed in the middle of the upper side of the mounting plate 1.

[0028] Through the above structure, the fixed clamp 9 is sleeved on the outside of the positioning shaft 8, and is installed on the outside of the upper part of the positioning shaft 8 through the positioning nut 13. The fixed clamp 9 is fixedly installed on the outside of the positioning shaft 8, and the hand wheel 5 is turned to drive the threaded shaft 4 to rotate, and the threaded shaft 4 drives the moving plate 3 to move up and down, and the moving plate 3 drives the slide bar 6 and the fixed clamp 9 on the outside of the positioning shaft 8 to move up and down;

[0029] The motor 15 drives one set of slide bars 6 to rotate, and the gears 14 outside the two sets of slide bars 6 are engaged to drive the other set of slide bars 6 to rotate. The two sets of slide bars 6 drive the two sets of fixed clamps 9 to rotate, and the fixed clamps 9 are used to transport the pipes so that the welding ends of the two sets of pipes are in contact and aligned. The specific structure is as follows:

[0030] Combined with Figure 4 and attached Figure 5As shown, the upper radius of the fixed clamp 9 is larger than the lower radius, and the upper side surface is an arc-shaped structure, the outer wall of the fixed clamp 9 is installed with an anti-slip sleeve 12, two groups of mounting blocks 17 are installed on the upper side of the mounting plate 1, the support roller 18 is rotatably installed between the two groups of mounting blocks 17, the side surface of the support roller 18 is an arc-shaped structure, a groove 16 is provided on the upper side of the mounting plate 1 and located between the two groups of mounting blocks 17, and the lower part of the support roller 18 is located inside the groove 16.

[0031] Through the above structure, when the fixed clamp 9 moves downward, the arc shape of the upper part of the fixed clamp 9 fits with the outer wall of the welded steel pipe, and the support roller 18 with the arc structure can stably clamp the steel pipe. The anti-slip sleeve 12 will not slide when the fixed clamp 9 transports the steel pipe. The two ends of the support roller 18 are rotated and inserted into the two groups of mounting blocks 17, and the lower side is placed in the groove 16. The support roller 18 can be easily replaced to match the size of the steel pipe.

[0032] Combined with Figure 1 , Attachment Figure 3 and attached Figure 4 As shown, the gear 14 is installed on the outside of the slide bar 6 installed on the upper sides of the two corners close to each other of the two groups of moving plates 3, the motor 15 is connected to the lower end of a group of slide bars 6 on which the gear 14 is installed on the outside, a plurality of groups of limit strips 10 are provided on the outside of the positioning shaft 8, and a plurality of groups of limit grooves 11 are provided on the inner wall of the fixed clamp 9 for the limit strips 10 to slide through.

[0033] Through the above structure, multiple groups of limiting inserts 10 are inserted into the corresponding limiting slide grooves 11 to prevent the fixed clamping cylinder 9 from rotating outside the positioning shaft 8. When the two groups of slide bars 6 and the positioning shaft driven by the motor 15 rotate, the fixed clamping cylinder 9 rotates accordingly, and the two groups of fixed clamping cylinders 9 are located on both sides of the steel pipe, which can clamp and transport the steel pipe.

[0034] Combined with Figure 5 As shown, a U-shaped mounting frame 2 is connected between the lower sides of the two groups of mounting plates 1, and a plurality of mounting holes 19 are provided on the U-shaped mounting frame 2.

[0035] Through the above structure, the two sets of mounting plates 1 are connected through the U-shaped mounting frame 2 to ensure that the components installed on the two mounting plates 1 are aligned, and the U-shaped mounting frame 2 can be installed through the multiple sets of mounting holes 19 on the U-shaped mounting frame 2.

[0036] The specific method of use is as follows: select corresponding fixed clamps 9 and supporting rollers 18 according to the sizes of the two groups of steel pipes to be welded and install them, place the two groups of steel pipes to be welded on the supporting rollers 18 respectively and between the two groups of fixed clamps 9, turn the hand wheel 5, drive the threaded shaft 4 to rotate through the hand wheel 5, drive the movable plate 3 to move downward through the threaded shaft 4, drive the sliding rod 6 and the fixed clamps 9 on the outside of the positioning shaft 8 to move downward through the movable plate 3, the arc of the upper part of the fixed clamps 9 fits with the outer wall of the welded steel pipe, and cooperates with the supporting rollers 18 with an arc structure to stably clamp the steel pipe, start the two groups of motors 15, drive one group of sliding rods 6 to rotate through the motor 15, and drive the other group of sliding rods 6 to rotate through the engagement of the gears 14 on the outside of the two groups of sliding rods 6, and drive the two groups of fixed clamps 9 to rotate through the two groups of sliding rods 6, and transport the pipeline through the fixed clamps 9, so that the welding ends of the two groups of pipelines are in contact and aligned.

[0037] 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.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0039] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A welding fixture, comprising two sets of mounting plates (1), characterized in that: A movable plate (3) is respectively provided below the two groups of mounting plates (1), a threaded shaft (4) is rotatably mounted on the lower side of the mounting plate (1), the lower end of the threaded shaft (4) cooperates with the thread to rotatably pass through the movable plate (3) and is equipped with a hand wheel (5), sliding rods (6) are rotatably mounted at the four corners of the upper side of the movable plate (3), and meshing gears (14) are respectively mounted on the outer sides of the lower parts of the two groups of sliding rods (6), and a group of motors (15) for driving the sliding rods (6) are mounted on the lower side of the movable plate (3); The upper end of the slide rod (6) slides through the mounting plate (1) and is installed with a limit block (7); a positioning shaft (8) is installed on the upper side of the limit block (7); a fixed clamp (9) is slidably sleeved on the outer side of the positioning shaft (8); a positioning nut (13) is threadedly installed on the outer side of the upper part of the positioning shaft (8); and a supporting roller (18) is installed in the middle of the upper side of the mounting plate (1).

2. A welding fixture according to claim 1, characterized in that: The upper radius of the fixed clamp (9) is greater than the lower radius, and the upper side surface is an arc-shaped structure.

3. A welding fixture according to claim 1, characterized in that: Two groups of mounting blocks (17) are installed on the upper side of the mounting plate (1), and the supporting roller (18) is rotatably installed between the two groups of mounting blocks (17). The side surface of the supporting roller (18) is an arc-shaped structure.

4. A welding fixture according to claim 3, characterized in that: A groove (16) is provided on the upper side of the mounting plate (1) and between the two groups of mounting blocks (17), and the lower part of the supporting roller (18) is located inside the groove (16).

5. A welding fixture according to claim 1, characterized in that: The gear (14) is mounted on the outside of a slide bar (6) mounted on the upper sides of two adjacent corners of two sets of moving plates (3), and the motor (15) is connected to the lower end of a set of slide bars (6) on which the gear (14) is mounted on the outside.

6. A welding fixture according to claim 1, characterized in that: The outer side of the positioning shaft (8) is provided with a plurality of groups of limiting inserting strips (10), and the inner wall of the fixed clamping cylinder (9) is provided with a plurality of groups of limiting sliding grooves (11) for the limiting inserting strips (10) to slide through.

7. A welding fixture according to claim 1, characterized in that: An anti-slip sleeve (12) is installed on the outer wall of the fixed clamping cylinder (9).

8. A welding fixture according to claim 1, characterized in that: A U-shaped mounting frame (2) is connected between the lower sides of the two groups of mounting plates (1), and the U-shaped mounting frame (2) is provided with a plurality of groups of mounting holes (19).

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