Build-up welding steel pipe welding clamp

Abstract

The utility model discloses a surfacing steel pipe welding clamp, and relates to the technical field of steel pipe welding, the surfacing steel pipe welding clamp comprises a base, the input end of a planetary transmission of the base is provided with a stepping motor, and the output end of the planetary transmission is provided with an L-shaped connecting plate; the base is connected with the L-shaped connecting plate; the supporting frames are symmetrically arranged on the base, and the distance between the supporting frames can be adjusted; the clamping assemblies are arranged between the corresponding supporting frames and the base respectively, each clamping assembly comprises an upper clamping block and a lower clamping block, the upper clamping blocks are movably installed on the supporting frames, and the lower clamping blocks are installed on the supporting frames; and the clamping driving assembly is arranged between the base and the pair of supporting frames. According to the pipe fitting fixing device, pipe fittings with different diameters can be fixed, pipe fittings with different lengths can also be fixed, and the use range is widened.

Description

Technical Field

[0001] The present application relates to the field of steel pipe welding, and in particular to a welding fixture for cladding steel pipes. Background Art

[0002] The cladding steel pipe is a composite steel pipe composed of a wear-resistant alloy layer and an integral steel pipe. A corrosion-resistant coating is formed on the inner surface of the steel pipe through the cladding process, making the steel pipe have excellent corrosion resistance.

[0003] Usually in corrosion-resistant pipe fittings, in order to enhance the corrosion resistance of the pipe fittings, it is necessary to apply a corrosion-resistant coating to the inner wall of the short pipe fittings before welding the pipe fittings.

[0004] At present, steel pipes are clad by using chucks of conventional equipment. Conventional equipment is generally used for longer pipe fittings. Conventional equipment is not suitable for short pipe fittings in pipeline fittings and is very inconvenient to use. Therefore, a cladding steel pipe welding fixture is developed for cladding the inner wall of short pipe fittings in pipeline fittings. The cladding steel pipe welding fixture is used to clamp the pipe fittings for rotation, so as to facilitate cladding the inner wall of the short pipe fittings. Utility Model Content

[0005] In view of this, the present application provides a cladding steel pipe welding fixture that can clamp and fix pipes of different diameters and lengths to meet the technical problem of the cladding fixture required for the inner wall of short pipes.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cladding steel pipe welding fixture, comprising:

[0008] A base, wherein a stepping motor is installed at the input end of the planetary transmission of the base, and an L-shaped connecting plate is installed at the output end of the planetary transmission;

[0009] A base connected to the L-shaped connecting plate;

[0010] A pair of support frames, symmetrically arranged on the base and capable of adjusting the distance between them;

[0011] A pair of clamping assemblies are respectively arranged on corresponding support frames, the clamping assemblies comprising: an upper clamping block and a lower clamping block, the upper clamping block is movably mounted on the support frame, and the lower clamping block is connected to the support frame;

[0012] A clamping drive assembly is arranged between the base and a pair of support frames.

[0013] Furthermore, it also includes four lower end adjustment components arranged on the base, and the lower end adjustment components include a nut seat installed at the lower end of the support frame and an adjustment screw rotatably arranged on the base, and the adjustment screw is threadedly connected to the nut seat.

[0014] Furthermore, the support frame includes a pair of vertical plates slidably arranged on the base and a horizontal plate connected between the pair of vertical plates, a shaft sleeve is installed on the horizontal plate, and a connecting rod that slidably cooperates with the shaft sleeve is provided on the upper clamping block.

[0015] Furthermore, both the upper clamping block and the lower clamping block are provided with V-shaped grooves.

[0016] Furthermore, a protective pad is provided in each of the two V-shaped grooves, and a plurality of protrusions are provided on the pressing surface of the protective pad, and the protrusions are in conflict with the outer wall of the pipe.

[0017] Furthermore, the clamping drive assembly includes a fixed plate and a first screw rod, the fixed plate is installed on the upper end of the base, a slide groove is opened on the base, a slider is slidably arranged in the slide groove, and the first screw rod is rotatably arranged on the fixed plate and is threadedly connected to the slider.

[0018] Furthermore, sliding rods are fixed on both sides of the sliding block, and sleeves are provided between the sliding rods and the corresponding connecting rods.

[0019] Furthermore, one end of the sliding rod extends into the sleeve and is slidably matched with the sleeve.

[0020] Furthermore, it also includes an adjustment mechanism, which includes a movable plate slidably connected between a pair of lower clamping blocks, a second screw rod rotatably mounted on the base, and a pair of guide columns fixed to the lower end of the movable plate, the guide columns slidingly cooperate with the guide holes on the base, and the second screw rod is threadedly connected to the movable plate.

[0021] It can be seen from the above technical solution that the advantages of the utility model are:

[0022] 1. In the present application, a pair of support frames are provided on the base, and a lower end adjustment component is provided between the vertical plate of each support frame and the base. By adjusting the lower end adjustment component, the pair of support frames can be moved closer and farther away. When the pair of support frames are close to each other, a pair of upper clamping blocks and a pair of lower clamping blocks can clamp short pipe fittings; when the pair of support frames are away from each other, a pair of upper clamping blocks and a pair of lower clamping blocks can clamp long pipe fittings, thereby fixing pipe fittings of different lengths and expanding the scope of use.

[0023] 2. The first screw can drive the connecting rod to drive the upper clamping block to move up and down relative to the central axis of the welding fixture, and the second screw can drive the movable plate to drive the lower clamping block to move up and down relative to the central axis of the welding fixture, so that the upper clamping block and the lower clamping block can clamp pipes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0025] Figure 1 This is a schematic diagram of the structure of this application.

[0026] Figure 2 This is a schematic diagram of the local structure of this application.

[0027] Figure 3 This is a schematic diagram of the connection relationship between the support frame and the clamping assembly of the present application.

[0028] Figure 4 for Figure 3 A local enlarged schematic diagram of point D in the middle.

[0029] Figure 5 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0030] Figure 6 This is a cross-sectional view of the connection between the sliding rod and the sleeve of the present application.

[0031] Figure 7 This is a structural diagram of another implementation method of the present application.

[0032] Figure 8 This is a schematic diagram of the connection relationship between the support frame and the clamping assembly in another embodiment of the present application.

[0033] Explanation of the reference numerals: 1-base; 11-mounting groove; 12-guide hole; 2-support frame; 21-vertical plate; 211-side groove; 22-horizontal plate; 23-sleeve; 24-connecting rod; 3-clamping assembly; 31-upper clamping block; 32-lower clamping block; 321-side plate; 322-V-shaped groove; 323-middle groove; 35-protective pad; 351-protrusion; 4-clamping drive assembly; 41-slider; 42-fixed plate; 43-slide groove; 44-first screw rod; 45-slide rod; 46-sleeve; 5-base; 51-planetary transmission; 52-stepping motor; 53-L-type connecting plate; 6-lower end adjustment assembly; 61-nut seat; 62-adjusting screw; 7-adjusting mechanism; 71-movable plate; 72-second screw rod; 73-guide column; 10-pipe fitting. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the implementation modes and the accompanying drawings. Here, the illustrative implementation modes and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0035] Example 1

[0036] refer to Figures 1 to 6 ,like Figure 1 and Figure 2 As shown, this embodiment provides a welding fixture for surfacing steel pipes, which includes: a base 5, a base 1, a pair of support frames 2, a pair of clamping assemblies 3 and a clamping drive assembly 4, a planetary transmission 51 is installed on the upper end of the base 5, a stepper motor 52 is installed on the input end of the planetary transmission 51, and an L-shaped connecting plate 53 is installed on the output end of the planetary transmission 51; the stepper motor 52 drives the input end of the planetary transmission 51 to rotate, and the power is transmitted inside the planetary transmission 51 and finally output by the output end of the planetary transmission 51, the base 1 is connected to the L-shaped connecting plate 53, so that the stepper motor 52 can drive the base 1 to rotate; a pair of support frames 2 are symmetrically arranged on the base 1, and the distance between the pair of support frames can be adjusted; a pair of clamping assemblies 3 are respectively arranged on the corresponding support frames 2; the clamping drive assembly 4 is arranged between the base 1 and the pair of support frames 2.

[0037] like Figure 3 As shown, the clamping assembly 3 includes: an upper clamping block 31 and a lower clamping block 32, the upper clamping block 31 is movably mounted on the support frame 2, and the lower clamping block 32 is fixedly mounted on the support frame 2 through a pair of side plates 321, and the upper clamping block 31 and the lower clamping block 32 can clamp the pipe fitting 10.

[0038] Preferably, if Figure 3 As shown, the support frame 2 includes a pair of vertical plates 21 slidably arranged on the base 1 and a horizontal plate 22 connected between the pair of vertical plates 21, a shaft sleeve 23 is installed on the horizontal plate 22, and a connecting rod 24 that slides with the shaft sleeve 23 is installed on the upper clamping block 31. By setting the shaft sleeve 23, the connecting rod 24 can slide smoothly, and the upper clamping block 31 is threadedly connected to the connecting rod 24. The threaded connection makes it easy to install and disassemble the connecting rod 24 and the upper clamping block 31.

[0039] like Figure 3 and Figure 4 As shown, both the upper clamping block 31 and the lower clamping block 32 are provided with a V-shaped groove 322 .

[0040] Preferably, a protective pad 35 is provided on the surface of the two V-shaped grooves 322, and a plurality of protrusions 351 are provided on the pressing surface of the protective pad 35, and the protrusions 351 are in contact with the outer wall of the pipe fitting 10. The protective pad 35 can improve the protection of the pipe fitting 10, and the protrusions 351 can increase the friction between the pipe fitting 10, thereby making the clamping more secure.

[0041] like Figure 2As shown, the clamping drive assembly 4 includes a fixed plate 42 and a first screw rod 44. The fixed plate 42 is installed on the upper end of the base 1. A slide groove 43 is opened on the base 1. A slider 41 is slidably arranged in the slide groove 43. The first screw rod 44 is rotatably arranged on the fixed plate 42, and the first screw rod 44 is threadedly connected to the slider 41.

[0042] like Figure 2 and Figure 6 As shown, sliding rods 45 are fixed on both sides of the slider 41, and a sleeve 46 is provided between the sliding rod 45 and the corresponding connecting rod 24. One end of the sliding rod 45 extends into the sleeve 46 and slides with the sleeve 46. Through the sliding cooperation between the sliding rod 45 and the sleeve 46, when the adjustment component 6 adjusts a pair of support frames 2 to move closer and farther, the sleeve 46 will move relative to the sliding rod 45.

[0043] In the embodiment of the present application, rotating the first screw rod 44 can cause the slider 41 to drive a pair of slide rods 45 and a pair of sleeves 46 to move up and down synchronously, so that the pair of connecting rods 24 drive the pair of upper clamping blocks 31 to move up and down, so that the pair of upper clamping blocks 31 can clamp or release the left and right ends of the pipe fitting 10 placed on the pair of lower clamping blocks 32.

[0044] like Figure 5 As shown, the cladding steel pipe welding fixture also includes four lower end adjustment components 6, and the adjustment components 6 are arranged in the corresponding installation grooves 11 on the base 1. The lower end adjustment components 6 include a nut seat 61 installed at the lower end of the vertical plate 21 and an adjustment screw 62 rotatably arranged on the corresponding installation groove 11. The adjustment screw 62 is threadedly connected to the nut seat 61, and the vertical plate 21 and the installation groove 11 are slidably matched to make the support frame 2 move smoothly. Rotating the adjustment screw 62 can make the nut seat 61 drive the vertical plate 21 to move horizontally. Therefore, adjusting the two front and rear relative adjustment screws 62 can drive the support frame 2 on one side to move horizontally, and the same is true for the support frame 2 on the other side. Therefore, the present application can adjust the distance between a pair of support frames 2 to adapt to the clamping of pipe fittings 10 of different lengths.

[0045] Working process: place the steel pipe 10 to be clamped on a pair of lower clamping blocks 32, rotate the first screw rod 44, and make the slider 41 drive the two connecting rods 24 on both sides to move downward synchronously through a pair of sliding rods 45 and a pair of sleeves 46, so that the two upper clamping blocks 31 spaced from each other move downward synchronously, and finally press on the two ends of the pipe fitting 10 to achieve the clamping of the pipe fitting 10.

[0046] When a shorter pipe 10 is to be clamped, the four adjusting screws 62 at both ends of the base 1 are rotated (or the two adjusting screws 62 at one end of the base 1 are rotated) to bring the pair of support frames 2 closer to each other, so that the pair of upper clamping blocks 31 are axially closer to each other, and the pair of lower clamping blocks 32 are axially closer to each other, and the shorter pipe 10 can be clamped. When clamping a longer pipe 10, the adjusting screws 62 are rotated in the opposite direction to achieve the pair of support frames 2 moving away from each other, so that the pair of upper clamping blocks 31 are axially away from each other, and the pair of lower clamping blocks 32 are axially away from each other, so that the longer pipe 10 is clamped.

[0047] After the pipe 10 is clamped, the stepper motor 52 drives the planetary transmission 51 to drive the L-shaped connecting plate 53 to rotate, thereby driving the base 1 to rotate, thereby realizing the rotation of the pipe 10.

[0048] When the pipe 10 rotates, the cladding welding gun is driven by the linear drive mechanism to achieve cladding of the corrosion-resistant coating on the inner wall of the pipe 10 .

[0049] Example 2

[0050] As another embodiment of the present application, in order to clamp pipes 10 of different diameters, as Figure 7 and Figure 8 As shown, this embodiment adds an adjustment mechanism 7 on the basis of embodiment 1, and the adjustment mechanism 7 includes a movable plate 71 slidably connected between a pair of lower clamping blocks 32, a second screw rod 72 rotatably mounted on the base 1, and a pair of guide columns 73 fixed to the lower end of the movable plate 71, the guide columns 73 are slidably matched with the guide holes 12 on the base 1, the second screw rod 72 is threadedly connected to the movable plate 71, and the movable plate 71 is slidably matched with the middle groove 323 of the lower clamping block 32.

[0051] The difference from Example 1 is that in this embodiment, the lower clamping block 32 is slidably matched with a corresponding pair of vertical plates 21. Specifically, side plates 321 are provided on both sides of the lower clamping block 32, and the side plates 321 are slidably matched with the side grooves 211 on the corresponding vertical plates 21.

[0052] Working process:

[0053] Different from the above embodiment, in the embodiment of the present application, the lower clamping block 32 is installed in sliding cooperation with a pair of vertical plates 21, and is slidably connected with the movable plate 71. By rotating the second screw rod 72, the movable plate 71 can drive the pair of lower clamping blocks 32 to move up or down, and combined with the first screw rod 44 to drive the pair of upper clamping blocks 31 to move up or down, so as to adapt to the clamping of pipe fittings 10 of different diameters. By setting the adjustment mechanism 7, the clamping drive assembly 4 and the lower end adjustment assembly 6, not only pipe fittings 10 of different diameters can be clamped, but also pipe fittings 10 of different lengths can be clamped, thereby having a wider range of applications.

[0054] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A welding fixture for cladding steel pipe, characterized in that: include: A base (5), wherein a stepping motor (52) is installed at the input end of a planetary transmission (51) of the base (5), and an L-shaped connecting plate (53) is installed at the output end of the planetary transmission (51); A base (1) connected to the L-shaped connecting plate (53); A pair of support frames (2) symmetrically arranged on the base (1) and capable of adjusting the distance between them; A pair of clamping assemblies (3) are respectively arranged on corresponding support frames (2), the clamping assemblies (3) comprising: an upper clamping block (31) and a lower clamping block (32), the upper clamping block (31) being movably mounted on the support frame (2), and the lower clamping block (32) being connected to the support frame (2); A clamping drive assembly (4) is arranged between the base (1) and the pair of support frames (2).

2. The cladding steel pipe welding fixture according to claim 1, characterized in that: It also includes four lower end adjustment components (6) arranged on the base (1), the lower end adjustment components (6) including a nut seat (61) mounted on the lower end of the support frame (2) and an adjustment screw (62) rotatably arranged on the base (1), the adjustment screw (62) being threadedly connected to the nut seat (61).

3. The cladding steel pipe welding fixture according to claim 1, characterized in that: The support frame (2) comprises a pair of vertical plates (21) slidably arranged on the base (1) and a horizontal plate (22) connected between the pair of vertical plates (21), a shaft sleeve (23) being mounted on the horizontal plate (22), and a connecting rod (24) slidably matched with the shaft sleeve (23) being provided on the upper clamping block (31).

4. The cladding steel pipe welding fixture according to claim 1, characterized in that: The upper clamping block (31) and the lower clamping block (32) are both provided with a V-shaped groove (322).

5. The cladding steel pipe welding fixture according to claim 4, characterized in that: A protection pad (35) is provided in each of the two V-shaped grooves (322), and a plurality of protrusions (351) are provided on a pressing surface of the protection pad (35), wherein the protrusions (351) are in contact with the outer wall of the pipe (10).

6. The cladding steel pipe welding fixture according to claim 1, characterized in that: The clamping drive assembly (4) comprises a fixed plate (42) and a first screw rod (44); the fixed plate (42) is mounted on the upper end of the base (1); a slide groove (43) is provided on the base (1); a slider (41) is slidably arranged in the slide groove (43); the first screw rod (44) is rotatably arranged on the fixed plate (42) and is threadedly connected to the slider (41).

7. The cladding steel pipe welding fixture according to claim 6, characterized in that: Sliding rods (45) are fixed on both sides of the sliding block (41), and a sleeve (46) is provided between the sliding rod (45) and the corresponding connecting rod (24).

8. The cladding steel pipe welding fixture according to claim 7, characterized in that: One end of the sliding rod (45) extends into the sleeve (46) and is slidably engaged with the sleeve (46).

9. The cladding steel pipe welding fixture according to claim 1, characterized in that: The invention also comprises an adjusting mechanism (7), the adjusting mechanism (7) comprising a movable plate (71) slidably connected between a pair of lower clamping blocks (32), a second screw rod (72) rotatably mounted on the base (1), and a pair of guide pillars (73) fixed to the lower end of the movable plate (71), the guide pillars (73) slidably engaging with guide holes (12) on the base (1), and the second screw rod (72) being threadedly connected to the movable plate (71).

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