Flange welding equipment for plastic-coated steel pipe

Abstract

The utility model discloses plastic-coated steel pipe welding flange equipment, which relates to the technical field of steel pipe welding, and comprises a workbench, four supporting legs are fixedly mounted at the bottom of the workbench, a limiting structure is arranged at the top of the workbench, the limiting structure comprises two bases, the two bases are both fixedly mounted at the top of the workbench, and the supporting legs are fixedly mounted at the bottom of the workbench. According to the plastic-coated steel pipe welding flange equipment, a first bevel gear is driven by a first connecting shaft to rotate so as to drive a second bevel gear to rotate in an engaged mode, then a first gear is driven by a rotating shaft to rotate along with the first gear, and therefore two first racks are driven to move in the opposite directions; and a plurality of connecting blocks and a plurality of limiting blocks at the tops of the two first racks are driven to move along with the two first racks, so that a plurality of plastic-coated steel pipes are clamped and fixed, it is effectively guaranteed that the central axis position where the steel pipes are located cannot be changed when the steel pipes are clamped, a flange does not need to be additionally adjusted when being fixed, and the machining efficiency is improved. And the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe welding technology, specifically a welding flange device for plastic-coated steel pipes. Background Technology

[0002] Plastic-coated steel pipe welding flange equipment is a connection mechanism that welds flanges to the ends of plastic-coated steel pipes and other pipes to form a connection between the pipes. During the welding process, the flanges and plastic-coated steel pipes are usually fixed to ensure the tightness of the weld between the flanges and the steel pipes and to avoid cracks in the weld.

[0003] The present publication number CN208289292U discloses a steel pipe rod flange welding device, including a table, bolts, a second limiting block and a screw. A fixing frame is welded to the bottom of the table, and a first limiting block is embedded and fixed on the table. A first threaded hole is opened in the first limiting block, and the bolt is screwed and fixed in the first threaded hole. A fixing plate is fixed on the table, and a sliding groove is opened in the fixing plate. A guide groove is opened at the top of the sliding groove.

[0004] While the above solution offers many advantages, it also has the following drawbacks: When fixing the steel pipe, since the fourth limiting block is fixed, the axial position of the clamping limit will vary when clamping and limiting steel pipes of different sizes. This means that when the flange is clamped and fixed with bolts, the operator needs to make corresponding adjustments based on the axial position of the steel pipe to ensure that the flange and the steel pipe are on the same axis. This is cumbersome to operate and the effect is not very good. Utility Model Content

[0005] The purpose of this utility model is to provide a welding flange device for plastic-coated steel pipes, so as to solve the problem in the prior art that when clamping and limiting steel pipes of different sizes, the axial position of the clamping and limiting may be different. This causes the operator to make corresponding adjustments according to the axial position of the steel pipe when clamping and fixing the flange with bolts to ensure that the flange and the steel pipe are on the same axis, which is more troublesome to operate and the effect is not very good.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic-coated steel pipe welding flange equipment, including a workbench, four support legs fixedly installed at the bottom of the workbench, and a limiting structure provided at the top of the workbench. The limiting structure includes two bases, both of which are fixedly installed at the top of the workbench. A first fixing frame is fixedly installed at the top of the two bases. A first gear is rotatably installed on the inner side of the first fixing frame. Two first racks are meshed with the outer side of the first gear. The two first racks are both located on the inner side of the first fixing frame and slide in contact with the first fixing frame. Several connecting blocks are fixedly installed at the top of the two first racks. Limiting blocks are fixedly installed at the top of the several connecting blocks. Several sliding grooves are opened at the top of the first fixing frame. The several connecting blocks are respectively located inside the several sliding grooves and slide in contact with the first fixing frame. The first racks being located on the inner side of the first fixing frame and sliding in contact with the first fixing frame can effectively limit the movement of the first racks, preventing them from deviating and disengaging from the first gear.

[0007] Preferably, a connecting shaft is rotatably mounted between the two bases, a bevel gear is fixedly mounted on the outer side of the connecting shaft, a rotating shaft is fixedly mounted on the bottom of the bevel gear, one end of the rotating shaft passes through the first fixing frame and is rotatably connected to the first fixing frame, and a second bevel gear is fixedly mounted on the bottom end of the rotating shaft, and the first bevel gear and the second bevel gear are meshed together.

[0008] Preferably, one end of the first connecting shaft passes through one of the bases and is fixedly installed with a first worm gear. Two first fixing seats are fixedly installed on one side of one of the first worm gears. A first worm is rotatably installed between the two first fixing seats. One end of the first worm passes through one of the first fixing seats and is fixedly installed with a first throttle. The first worm gear and the first worm are meshed and connected.

[0009] Preferably, a fixing structure is provided on one side of the workbench. The fixing structure includes a second fixing frame, which is fixedly installed on one side of the workbench. Several vertical plates are fixedly installed on the top of the second fixing frame. Each of the vertical plates is threaded with a screw at the middle position. A washer is fixedly installed at one end of each screw. The thread directions of adjacent screws are opposite.

[0010] Preferably, two support seats are fixedly installed on the top of the second fixing frame, and a second connecting shaft is rotatably installed between the two support seats. Several L-shaped plates are fixedly installed on the top of the second fixing frame. The second connecting shaft passes through the several L-shaped plates and is rotatably connected to the several L-shaped plates. Several first sprockets are fixedly installed on the outer side of the second connecting shaft. Second sprockets are rotatably installed on one side of each of the several L-shaped plates. Chains are sleeved on the outer sides of the several first sprockets and the several second sprockets. The several first sprockets and the several second sprockets are respectively connected by several chain drives.

[0011] Preferably, a polygonal strip is rotatably mounted on one side of each of the L-shaped plates, a polygonal slot is opened at one end of each of the screws, the polygonal strips are respectively disposed inside the polygonal slots of the screws and slide in contact with the screws, a connecting post is fixedly mounted on one side of each of the polygonal strips, one end of each connecting post passes through the L-shaped plates and is fixedly connected to the second sprockets, one end of the second connecting shaft passes through one of the support seats and is fixedly mounted with a second worm gear, two second fixed seats are fixedly mounted on one side of one of the support seats, a second worm is rotatably mounted between the two second fixed seats, one end of the second worm passes through one of the second fixed seats and is fixedly mounted with a second throttle, and the second worm gear and the second worm are meshed together.

[0012] Preferably, the bottom of the workbench is provided with a lifting structure, which includes two base frames. Both base frames are fixedly installed on the top of the workbench. A second gear is rotatably installed on the inner side of each of the two base frames. A second rack is meshed with the outer side of each of the two second gears. The two second racks are respectively located on the inner side of the two base frames and slide in contact with the two base frames. The two base frames are fixedly installed at the bottom of the second fixed frame. A third connecting shaft is rotatably installed between the two base frames. Both ends of the third connecting shaft pass through the two base frames and are fixedly connected to the two second gears. One end of the third connecting shaft passes through one of the base frames and is fixedly installed with a third worm gear. Two third fixed seats are fixedly installed on one side of one of the base frames. A third worm is rotatably installed between the two third fixed seats. One end of the third worm passes through one of the third fixed seats and is fixedly installed with a third throttle. The third worm gear and the third worm are meshed together.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application uses a first connecting shaft to drive a first bevel gear to rotate, which in turn drives a second bevel gear to mesh and rotate. Then, a rotating shaft drives the first gear to rotate, thereby causing the two first racks to move in opposite directions. This causes several connecting blocks and several limiting blocks on the top of the two first racks to move accordingly, thereby clamping and fixing several plastic-coated steel pipes. This effectively ensures that the central axis position of the placed steel pipes does not change when they are clamped, so that the flanges do not need to be adjusted during fixing, thus improving the practicality of the equipment.

[0015] 2. This application uses several chains to drive several No. 2 sprockets to rotate, which in turn drive several polygonal bars to rotate, thereby driving several screws to rotate. When the screws rotate, they move due to the threaded connection between them and several vertical plates. This, in turn, uses several gaskets to clamp and fix the flanges placed between the vertical plates. This eliminates the need for workers to fix the flanges one by one with bolts, reducing the fixing time for the flanges, improving work efficiency, and ensuring that the center axis of the flange and the steel pipe are in the same position, preventing the steel pipe and the flange from deviating. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a plastic-coated steel pipe welding flange equipment according to the present invention;

[0017] Figure 2 This is a sectional view of the limiting structure of a plastic-coated steel pipe welding flange equipment according to this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the No. 1 gear, the first rack connecting block, and the limiting block of a plastic-coated steel pipe welding flange equipment according to this utility model.

[0019] Figure 4 This is a schematic diagram of the fixing structure of a plastic-coated steel pipe welding flange equipment according to the present invention;

[0020] Figure 5 This is a schematic diagram of the separate structure of the screw, gasket, and polygonal strip of a plastic-coated steel pipe welding flange equipment according to this utility model;

[0021] Figure 6 This is a schematic diagram of the lifting structure of a plastic-coated steel pipe welding flange equipment according to this utility model.

[0022] Numbered in the diagram: 1. Workbench; 2. Support leg; 3. Base; 4. Fixing frame 1; 5. Gear 1; 6. First rack; 7. Connecting block; 8. Limiting block; 9. Connecting shaft 1; 10. Bevel gear 1; 11. Rotating shaft; 12. Bevel gear 2; 13. Worm gear 1; 14. Fixing seat 1; 15. Worm gear 1; 16. Throttle 1; 17. Fixing frame 2; 18. Vertical plate; 19. Screw; 20. Washer; 2 1. Support base; 22. Second connecting shaft; 23. L-shaped plate; 24. First sprocket; 25. Chain; 26. Second sprocket; 27. Polygonal bar; 28. Second worm gear; 29. ​​Second fixed base; 30. Second worm; 31. Second throttle; 32. Base frame; 33. Second gear; 34. Second rack; 35. Third connecting shaft; 36. Third worm gear; 37. Third fixed base; 38. Third worm; 39. Third throttle. Detailed Implementation

[0023] 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.

[0024] Example: Figure 1 - Figure 6 As shown, this utility model provides a technical solution for a plastic-coated steel pipe welding flange equipment, including a workbench 1. Four support legs 2 are fixedly installed at the bottom of the workbench 1. A limiting structure is provided at the top of the workbench 1. The limiting structure includes two bases 3, both of which are fixedly installed at the top of the workbench 1. A first fixing frame 4 is fixedly installed at the top of the two bases 3. A first gear 5 is rotatably installed on the inner side of the first fixing frame 4. Two first racks 6 are meshed and connected to the outer side of the first gear 5. Both first racks 6 are located on the inner side of the first fixing frame 4 and slide in contact with the first fixing frame 4. Several connecting blocks 7 are fixedly installed at the top of each of the two first racks 6. Limiting blocks 8 are fixedly installed at the top of each of the several connecting blocks 7. Several sliding grooves are opened at the top of the first fixing frame 4. Several connecting blocks 7 are respectively located inside the several sliding grooves and slide in contact with the first fixing frame 4.

[0025] A connecting shaft 9 is rotatably installed between the two bases 3. A bevel gear 10 is fixedly installed on the outside of the connecting shaft 9. A rotating shaft 11 is fixedly installed at the bottom of the gear 5. One end of the rotating shaft 11 passes through the first fixing frame 4 and is rotatably connected to the first fixing frame 4. A second bevel gear 12 is fixedly installed at the bottom of the rotating shaft 11. The first bevel gear 10 and the second bevel gear 12 are meshed and connected.

[0026] One end of the No. 1 connecting shaft 9 passes through one of the bases 3 and is fixedly installed with a No. 1 worm gear 13. Two No. 1 fixed seats 14 are fixedly installed on one side of one of the No. 1 worm gear 13. A No. 1 worm 15 is rotatably installed between the two No. 1 fixed seats 14. One end of the No. 1 worm 15 passes through one of the No. 1 fixed seats 14 and is fixedly installed with a No. 1 throttle 16. The No. 1 worm gear 13 and the No. 1 worm 15 are meshed and connected.

[0027] A fixing structure is provided on one side of the workbench 1. The fixing structure includes a second fixing frame 17, which is fixedly installed on one side of the workbench 1. Several vertical plates 18 are fixedly installed on the top of the second fixing frame 17. Screws 19 are threadedly connected to the middle of the several vertical plates 18. Washers 20 are fixedly installed at one end of the several screws 19.

[0028] Two support seats 21 are fixedly installed on the top of the second fixed frame 17. A second connecting shaft 22 is rotatably installed between the two support seats 21. Several L-shaped plates 23 are fixedly installed on the top of the second fixed frame 17. The second connecting shaft 22 passes through the several L-shaped plates 23 and is rotatably connected to the several L-shaped plates 23. Several first sprockets 24 are fixedly installed on the outside of the second connecting shaft 22. A second sprocket 26 is rotatably installed on one side of each of the several L-shaped plates 23. Chains 25 are sleeved on the outside of the several first sprockets 24 and the several second sprockets 26. The several first sprockets 24 and the several second sprockets 26 are respectively connected by several chains 25.

[0029] A polygonal strip 27 is rotatably mounted on one side of several L-shaped plates 23. A polygonal slot is opened at one end of several screws 19. The polygonal strips 27 are respectively set inside the polygonal slots of several screws 19 and slide in contact with several screws 19. A connecting post is fixedly mounted on one side of several polygonal strips 27. One end of several connecting posts passes through several L-shaped plates 23 and is fixedly connected to several second sprockets 26. One end of the second connecting shaft 22 passes through one of the support seats 21 and is fixedly mounted with a second worm gear 28. Two second fixing seats 29 are fixedly mounted on one side of one of the support seats 21. A second worm 30 is rotatably mounted between the two second fixing seats 29. One end of the second worm 30 passes through one of the second fixing seats 29 and is fixedly mounted with a second throttle 31. The second worm gear 28 and the second worm 30 are meshed together.

[0030] The bottom of the workbench 1 is equipped with a lifting structure, which includes two base frames 32. Both base frames 32 are fixedly installed on the top of the workbench 1. A second gear 33 is rotatably mounted on the inner side of each base frame 32. A second rack 34 is meshed with the outer side of each second gear 33. The two second racks 34 are respectively located on the inner side of the two base frames 32 and slide in contact with them. The two base frames 32 are fixedly installed on the bottom of a second fixed frame 17. A third connecting shaft 35 is rotatably mounted between the two base frames 32. Both ends of the connecting shaft 35 pass through two base frames 32 and are fixedly connected to two No. 2 gears 33. One end of the third connecting shaft 35 passes through one of the base frames 32 and one of the No. 2 gears 33 and is fixedly installed with a No. 3 worm gear 36. Two No. 3 fixing seats 37 are fixedly installed on one side of one of the base frames 32. A No. 3 worm 38 is rotatably installed between the two No. 3 fixing seats 37. One end of the No. 3 worm 38 passes through one of the No. 3 fixing seats 37 and is fixedly installed with a No. 3 throttle 39. The No. 3 worm gear 36 and the No. 3 worm 38 are meshed and connected.

[0031] It should be noted that this utility model is a welding flange device for plastic-coated steel pipes. In use, the plastic-coated steel pipes are placed between several limiting blocks 8 in pairs. Then, the first throttle handle 16 is rotated to drive the first worm gear 15 to rotate, thereby driving the first worm wheel 13 to mesh and rotate. Then, the first connecting shaft 9 drives the first bevel gear 10 to rotate, thereby driving the second bevel gear 12 to mesh and rotate. Then, the rotating shaft 11 drives the first gear 5 to rotate, thereby driving the two first racks 6 to move in opposite directions, thereby driving several connecting blocks 7 and several limiting blocks 8 at the top of the two first racks 6 to move accordingly. This clamps and fixes the placed plastic-coated steel pipes, effectively ensuring that the central axis position of the placed steel pipes does not change when clamped, so that the flange does not need to be adjusted during fixing, thus improving the practicality of the equipment.

[0032] When fixing the flange, place the flange between each pair of vertical plates 18, then turn the second throttle 31 to drive the second worm gear 30 to rotate, which in turn drives the second worm wheel 28 to rotate, which in turn drives the second connecting shaft 22 to rotate, which in turn drives the first sprocket 24 to rotate, and then drives the second sprocket 26 to rotate through the chains 25, which in turn drives the polygonal strips 27 to rotate, which in turn drives the screws 19 to rotate. When the screws 19 rotate, they will move due to the threaded connection between them and the vertical plates 18, thereby clamping and fixing the flange placed between the vertical plates 18 through the gaskets 20. This eliminates the need for workers to fix the flange one by one with bolts, reducing the fixing time and improving work efficiency. It also ensures that the center axis of the flange and the steel pipe are in the same position, and there will be no deviation between the steel pipe and the flange. After the flange is fixed, the injection-molded steel pipe and the flange can be welded.

[0033] When fixing flanges of different sizes, rotating the No. 3 throttle 39 drives the No. 3 worm gear 38 to rotate, which in turn drives the No. 3 worm wheel 36 to mesh and rotate, thereby driving the No. 3 connecting shaft 35 to rotate, which in turn drives the two No. 2 gears 33 to rotate, causing the two No. 2 racks 34 to mesh and move, thereby causing the height of the No. 2 fixing bracket 17 to change accordingly. This allows for corresponding adjustment of the clamping position of the screw 19 and the gasket 20 to accommodate flanges of different sizes.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A welding flange equipment for plastic-coated steel pipes, characterized in that: The workbench (1) is provided with four support legs (2) fixedly installed at the bottom. The top of the workbench (1) is provided with a limiting structure, which includes two bases (3). The two bases (3) are fixedly installed on the top of the workbench (1). A first fixing frame (4) is fixedly installed on the top of the two bases (3). A first gear (5) is rotatably installed on the inner side of the first fixing frame (4). Two first racks (6) are meshed on the outer side of the first gear (5). The two first racks (6) are both located on the inner side of the first fixing frame (4) and slide in contact with the first fixing frame (4). Several connecting blocks (7) are fixedly installed on the top of the two first racks (6). Limiting blocks (8) are fixedly installed on the top of the several connecting blocks (7). Several sliding grooves are opened on the top of the first fixing frame (4). Several connecting blocks (7) are respectively located inside the several sliding grooves and slide in contact with the first fixing frame (4).

2. The welding flange equipment for plastic-coated steel pipes according to claim 1, characterized in that: A connecting shaft (9) is rotatably installed between the two bases (3). A bevel gear (10) is fixedly installed on the outside of the connecting shaft (9). A rotating shaft (11) is fixedly installed at the bottom of the gear (5). One end of the rotating shaft (11) passes through the first fixing frame (4) and is rotatably connected to the first fixing frame (4). A second bevel gear (12) is fixedly installed at the bottom of the rotating shaft (11). The first bevel gear (10) and the second bevel gear (12) are meshed together.

3. The welding flange equipment for plastic-coated steel pipes according to claim 2, characterized in that: One end of the first connecting shaft (9) passes through one of the bases (3) and is fixedly installed with a first worm gear (13). Two first fixing seats (14) are fixedly installed on one side of one of the first worm gears (13). A first worm (15) is rotatably installed between the two first fixing seats (14). One end of the first worm (15) passes through one of the first fixing seats (14) and is fixedly installed with a first throttle (16). The first worm gear (13) and the first worm (15) are meshed and connected.

4. The welding flange equipment for plastic-coated steel pipes according to claim 1, characterized in that: A fixing structure is provided on one side of the workbench (1). The fixing structure includes a second fixing frame (17). The second fixing frame (17) is fixedly installed on one side of the workbench (1). Several vertical plates (18) are fixedly installed on the top of the second fixing frame (17). Screws (19) are threadedly connected to the middle of the several vertical plates (18). A washer (20) is fixedly installed at one end of the several screws (19).

5. The welding flange equipment for plastic-coated steel pipes according to claim 4, characterized in that: Two support seats (21) are fixedly installed on the top of the second fixed frame (17). A second connecting shaft (22) is rotatably installed between the two support seats (21). Several L-shaped plates (23) are fixedly installed on the top of the second fixed frame (17). The second connecting shaft (22) passes through several L-shaped plates (23) and is rotatably connected to several L-shaped plates (23). Several first sprockets (24) are fixedly installed on the outside of the second connecting shaft (22). A second sprocket (26) is rotatably installed on one side of several L-shaped plates (23). Chains (25) are sleeved on the outside of several first sprockets (24) and several second sprockets (26). Several first sprockets (24) and several second sprockets (26) are respectively connected by several chains (25).

6. The welding flange equipment for plastic-coated steel pipes according to claim 5, characterized in that: A polygonal strip (27) is rotatably mounted on one side of each of the L-shaped plates (23). A polygonal slot is opened at one end of each of the screws (19). The polygonal strips (27) are respectively disposed inside the polygonal slots of the screws (19) and slide in contact with the screws (19). A connecting post is fixedly mounted on one side of each of the polygonal strips (27). One end of each connecting post passes through the L-shaped plates (23) and is fixedly connected to the second sprockets (26). The connection is fixed, with one end of the second connecting shaft (22) passing through one of the support seats (21) and a second worm gear (28) fixedly installed. Two second fixed seats (29) are fixedly installed on one side of one of the support seats (21). A second worm (30) is rotatably installed between the two second fixed seats (29). One end of the second worm (30) passes through one of the second fixed seats (29) and a second throttle (31) is fixedly installed. The second worm gear (28) and the second worm (30) are meshed and connected.

7. The welding flange equipment for plastic-coated steel pipes according to claim 4, characterized in that: The bottom of the workbench (1) is provided with a lifting structure, which includes two base frames (32). Both base frames (32) are fixedly installed on the top of the workbench (1). A second gear (33) is rotatably installed on the inner side of each of the two base frames (32). A second rack (34) is meshed with the outer side of each of the two second gears (33). The two second racks (34) are respectively located on the inner side of the two base frames (32) and slide in contact with the two base frames (32). The two base frames (32) are fixedly installed on the bottom of a second fixed frame (17). A third connecting shaft (35) is rotatably installed between the two base frames (32). The two ends of the No. 3 connecting shaft (35) pass through two base frames (32) respectively and are fixedly connected to two No. 2 gears (33). One end of the No. 3 connecting shaft (35) passes through one of the base frames (32) and one of the No. 2 gears (33) and is fixedly installed with a No. 3 worm gear (36). Two No. 3 fixing seats (37) are fixedly installed on one side of one of the base frames (32). A No. 3 worm (38) is rotatably installed between the two No. 3 fixing seats (37). One end of the No. 3 worm (38) passes through one of the No. 3 fixing seats (37) and is fixedly installed with a No. 3 throttle (39). The No. 3 worm gear (36) and the No. 3 worm (38) are meshed and connected.

Images