A pipeline flange assembly device

Abstract

The utility model belongs to the technical field of pipeline flange welding, and particularly relates to a pipeline flange assembly device. A pipeline flange assembly device includes a support block, a support rod is threadedly connected to the support block, and a fastening nut is fixedly sleeved in the middle of the support rod; a guide cylinder is horizontally fixedly connected to one end of the support block, a slider is slidably inserted in the guide cylinder, a support bolt is vertically arranged and threaded in the slider, a limit block is fixedly embedded in the guide cylinder away from one end of the support block, and the adjustment bolt is threadedly connected in the limit block and can abut against the slider. The utility model has a simple structure, is easy to install, has high assembly accuracy, and can realize flange assembly adjustment of various sizes.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline flange welding, and in particular relates to a pipeline flange assembly device. Background Art

[0002] In the pipeline system, the extensive use of flanges is indispensable. In the process of welding pipelines and flanges, the matching accuracy of flanges and pipelines is very high. There are strict requirements for the misalignment, the maximum gap, and the horizontality and verticality of flanges. The general deviation is required to reach the millimeter level. For the existing matching of small-sized flanges (below 32"), due to their light weight, workers usually hold the flanges by hand and match them with pipelines before spot welding them. For large-sized flanges above 32", due to their heavy weight, they need to be lifted with the help of lifting tools before matching the flanges with pipelines. However, during the matching process, the flange needs to be supported by someone because of its unstable center. In addition, someone needs to control the lifting tools to adjust it before electric welding can be performed, resulting in low matching efficiency and limited matching accuracy.

[0003] In the prior art, the Chinese invention patent with application number 201110188683.4 discloses a flange assembly device, which is provided with a bottom plate and two vertical support arms corresponding to each other and fixed on the bottom plate; a plurality of support rollers are installed at the lower part of the bottom plate, and a first screw hole is provided on the bottom plate adjacent to the support roller, and a screw rod cooperates with the first screw hole and passes through the first screw hole; a second screw hole is provided on one side of each vertical support arm, and an adjustment screw rod cooperates with the second screw hole and passes through the second screw hole; an adjustment long hole is provided on each vertical support arm, and a horizontal support device is installed in the adjustment long hole, and the horizontal support device includes: a horizontal support arm, a vertical adjustment screw rod and a vertical support plate are fixed on the top of the horizontal support arm, and a horizontal long hole is provided on the vertical support plate, and a plurality of flange support screw rods and nut pairs are installed in the long hole. Due to the adoption of the above technical scheme, the present invention has a simple structure and is easy to operate; at the same time, it reduces the production cost and the labor intensity of the operator, and improves the efficiency of flange assembly.

[0004] However, the above existing technologies still have the following technical problems: the existing assembly equipment is relatively large in size, and the flange assembly in the station will be limited by the site. The temporary working zone of the line welding is generally uneven, which makes it inconvenient to move the equipment. It is still difficult to achieve universal welding for flanges of different sizes and the assembly accuracy is limited. Utility Model Content

[0005] In order to solve at least one technical problem existing in the prior art, the present application provides a pipeline flange assembly device which has a simple structure, is easy to install, has high assembly accuracy and can realize flange assembly adjustment of various sizes.

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

[0007] A pipe flange assembly device comprises a support block, a support rod is threadedly connected to the support block, and a fastening nut is fixedly sleeved in the middle of the support rod; a guide cylinder is horizontally fixedly connected to one end of the support block, a slider is slidably inserted in the guide cylinder, a support bolt is vertically arranged and threaded in the slider, a limit block is fixedly embedded in the guide cylinder away from one end of the support block, and the adjustment bolt is threadedly connected in the limit block and can abut against the slider.

[0008] Preferably, a ratchet wrench is further included, wherein the ratchet wrench is arranged on the fastening nut, and the ratchet wrench can drive the fastening nut to drive the support rod to rotate.

[0009] Preferably, a limit nut is fixedly connected to the support rod below the ratchet wrench.

[0010] Preferably, external threads with opposite rotation directions are provided at both ends of the support rod, one end of the support rod is threadedly connected in the support block and the other end of the support rod is threadedly connected in the sleeve.

[0011] Preferably, the spring is axially arranged in the guide cylinder and has two ends fixedly connected to the slider and the limit block respectively. When the adjusting bolt abuts against the slider, the spring is in a stretched state.

[0012] Preferably, an adjusting nut is threadedly connected to the adjusting bolt on the outer side of the guide cylinder.

[0013] Preferably, a rotating handle is provided at the end of the adjusting bolt outside the guide cylinder.

[0014] Preferably, a bubble level is horizontally fixedly connected to the support block.

[0015] Preferably, a gap adjustment plate is vertically embedded on the support block.

[0016] Preferably, two detachable gap adjustment plates are vertically embedded on the support block, and the two gap adjustment plates are fixedly connected in the support block by fastening bolts.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model is provided with a support rod and a support block, and the support rod can be rotated to make the ends of the support block and the support rod abut against the inner wall of the pipeline, so that the utility model is fixedly installed in the pipeline, and can be fixedly installed according to different pipeline sizes; when the flange and the pipeline are assembled, the inner wall of the flange can be hung on the support bolt, and the height of the flange can be adjusted by rotating the support bolt, and the gap between the flange and the pipeline can be adjusted by pushing the slider, the support bolt and the flange by adjusting the bolt; the utility model has a simple structure and is easy to install in the pipeline, can adapt to different sizes of pipelines and flanges, has strong versatility, and is easy to carry, is not easily restricted by the site, and has high assembly accuracy.

[0019] 2. The utility model provides a ratchet wrench and a fastening nut, and the support rod can be quickly rotated by the ratchet wrench to make the support rod and the support block press against the inner wall of the pipe; by providing a limit nut, the ratchet wrench can be limited and supported to prevent the ratchet wrench from detaching from the fastening nut; by providing a sleeve, the adjustment range between the support rod and the support block can be increased to adapt to the assembly of large-diameter pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0021] Figure 2 It is a half-section structural schematic diagram of the utility model when assembling pipes and flanges.

[0022] Figure 3 It is a schematic diagram of the connection structure between the support block and the guide cylinder of the utility model.

[0023] Figure 4 It is a schematic diagram of the connection structure between the support rod, the fastening nut and the limit nut of the utility model.

[0024] Figure 5 The utility model is a schematic diagram of the connection structure of the support bolt, the sliding block, the spring, the adjustment bolt and the adjustment nut.

[0025] Figure 6 The utility model is a schematic diagram of the installation structure when assembling pipes and flanges.

[0026] In the figure: 1. support block, 11. support block threaded hole, 12. bubble level, 13. support block slot, 14. gap adjustment plate, 15. fastening bolt, 2. support rod, 21. sleeve, 22. fastening nut, 23. ratchet wrench, 24. limit nut, 3. pipe, 4. guide cylinder, 41. slider, 42. guide cylinder through groove, 43. support bolt, 44. limit block, 45. adjustment bolt, 46. spring, 47. adjustment nut, 48. rotating handle, 5. flange. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] Example

[0030] See also Figures 1 to 6 As shown, a pipeline flange assembly device includes a support block 1, which can be a cubic structure. A support block threaded hole 11 is provided on the support block 1 and penetrates the support block 1. A support rod 2 is threadedly connected in the support block threaded hole 11. By screwing the support rod 2 in or out relative to the support block 1, the distance between the upper end surface of the support block 1 and the lower end of the support rod 2 is realized, so that the support block 1 and the support rod 2 can be pressed against the inner wall of the pipeline 3 to fix the support block 1 and the support rod 2 on the inner wall of the pipeline 3. In this embodiment, in order to adapt to the large-diameter pipeline 3, the two ends of the support rod 2 are provided with external threads with opposite rotation directions, that is, the support rod 2 is a stud bolt structure, one end of the support rod 2 is threadedly connected in the support block threaded hole 11 of the support block 1 and the other end is threadedly connected in the sleeve 21. Therefore, when the support rod 2 rotates clockwise or counterclockwise, the movement of the support block 1 and the sleeve 21 in the direction of moving toward or away from each other can be realized. By setting the sleeve 21, the utility model can be fixed on a pipeline with a larger inner diameter.

[0031] Based on this, in order to facilitate the rotation of the support rod 2, a fastening nut 22 is provided in the middle of the support rod 2 by welding and fixing, and a ratchet wrench 23 is sleeved on the fastening nut 22. The ratchet wrench 23 can use an existing wrench with a ratchet structure that can adjust the direction of force application, and the ratchet wrench 23 can quickly drive the support rod 2 to rotate by driving the fastening nut 22. In order to prevent the ratchet wrench 23 from detaching from the fastening nut 22, a limit nut 24 is fixedly connected to the support rod 2 below the ratchet wrench 23 by welding. Therefore, during installation, the ratchet wrench 23 can be inserted from the upper part of the support rod 2 and sleeved on the fastening nut 22. Since the outer size of the limit nut 24 is larger than the fastening nut 22, the ratchet wrench 23 cannot pass over the limit nut 24 and fall to the lower part of the support rod 2.

[0032] A guide cylinder 4 is integrally formed and fixedly connected with the support block 1 on one side vertical end face of the support block 1, and the axis of the guide cylinder 4 is perpendicular to the corresponding end face of the support block 1. A cylindrical slider 41 is slidably penetrated in the guide cylinder 4, and a guide cylinder through groove 42 penetrating the outer circumference of the guide cylinder 4 is provided along its axial direction, the guide cylinder through groove 42 is vertically provided, and a slider through hole penetrating the slider 41 is provided on the outer circumference, and a support bolt 43 is vertically upward and threadedly connected in the slider through hole, and the support bolt 43 is also penetrated in the guide cylinder through groove 42. Through the above structure, the inner wall of the flange 5 can be placed on the upper part of the support bolt 43, and the height of the flange 5 can be adjusted by rotating the support thread 43 in the forward or reverse direction.

[0033] In order to facilitate the adjustment of the gap between the flange 5 and the pipe 3, in this embodiment, a limit block 44 is fixedly embedded in the guide cylinder 4 at one end away from the support block 1 by welding or threaded connection, and the adjusting bolt 45 is threadedly connected in the limit block 44 and can abut against the slider 41. In order to facilitate the slider 41 to drive the support bolt 43 to move to the initial position (i.e., the side close to the limit block 44), the spring 46 is axially arranged in the guide cylinder 4 and its two ends are respectively fixedly connected to the slider 41 and the limit block 44 by welding or clamping. When the adjusting bolt 45 abuts against the slider 41, the spring 46 is in a tension state. By providing the spring 46, when the adjusting bolt 46 is rotated to push the slider 41, the damping effect during pushing is improved, the stability during pushing is improved to improve the gap accuracy between the flange 5 and the pipe 3, and after the flange 5 and the pipe 3 are assembled and welded on the pipe 3, the adjusting bolt 46 is rotated in the opposite direction, and the slider 41 can automatically return to the initial position under the tension of the spring 46.

[0034] In order to limit the position of the slide block 41, an adjusting nut 47 is threadedly connected to the adjusting bolt 45 outside the guide cylinder 4. Of course, the adjusting nut 47 can also be fixed on the adjusting bolt 45 by welding.

[0035] Furthermore, in order to facilitate the rotation of the adjusting bolt 45 , a rotating handle 48 is provided at the end of the adjusting bolt 45 outside the guide cylinder 4 .

[0036] Further, in order to ensure that the support block 1 is in a horizontal state, a bubble level 12 is horizontally fixedly embedded on the support block 1. The bubble level 12 can be an existing structure, which will not be described in detail here.

[0037] Furthermore, two support block slots 13 are vertically provided on the end surface of the support block 1 where the guide cylinder 4 is provided, and a gap adjustment plate 14 is detachably and vertically provided in each support block slot 13. When the flange 5 is assembled with the pipe 3, the end surfaces of the pipe 3 and the flange 5 opposite to each other respectively abut against the gap adjustment plate 14, thereby ensuring the welding gap between the pipe 3 and the flange 5. Different welding gaps can be adjusted by providing gap adjustment plates 14 of different thicknesses. In this embodiment, two detachable gap adjustment plates 14 are vertically embedded in the support block slot 13, and the two gap adjustment plates 14 are stacked. The fastening bolt 15 is threadedly connected in the support block 1 near the support block slot 13, and the nut cover of the fastening bolt 15 is pressed on the outer gap adjustment plate 14, thereby fixing the gap adjustment plate 14 in the support block slot 13. Furthermore, in order to avoid the lower part of the gap adjustment plate 14 from interfering with the ratchet wrench 23, thereby making the ratchet wrench 23 difficult to operate, the length of the gap adjustment plate 14 is less than the height of the fish support block slot 13.

[0038] The working process of the embodiment of the utility model is as follows:

[0039] First, the gap adjustment plate 14 is adjusted according to the reserved welding gap designed between the flange 5 and the pipe 3. If the small gap mode is selected, the gap adjustment plate 14 on the inner side of the slot of the support block 13 is higher than the gap adjustment plate 14 on the outer side, and the inner gap adjustment plate 14 is adjusted to a height that can abut against the flange 5; conversely, if the large gap mode is selected, the gap adjustment plate 14 on the outer side of the slot of the support block 13 is higher than the gap adjustment plate 14 on the inner side, and the outer gap adjustment plate 14 is adjusted to a height that can abut against the flange 5;

[0040] When the sleeve 21 is not installed, the support block 1 is held and the ratchet wrench 23 is turned to drive the fastening nut 22 and the support rod 2 to reverse, so that the support rod 2 is gradually screwed out of the support block 1 until the upper part of the support block 1 and the lower part of the support rod 2 respectively abut against the inner wall of the pipe 3. During this process, the angle of the support block 1 is adjusted by the bubble level 12 to keep it in a horizontal state; through the above operation, the support block 1 and the support rod 2 are finally clamped on the inner wall of the pipe 3;

[0041] The flange 5 is hung on the upper end of the support bolt 43, and the height of the flange 5 is adjusted by rotating the support bolt 43; the adjusting bolt 45 is driven to rotate by rotating the handle 48, thereby pushing the slider 41, the support bolt 43, and the flange 5 to move toward the pipe 3 until the flange 5 abuts against the gap adjustment plate 14, and the flange 5 can be spot welded on the pipe 3 at this time; after the spot welding is completed, the support rod 2 is rotated forwardly by the ratchet wrench 23 to make the support rod 2 drop until the gap adjustment plate 14 is separated from the flange 5, and the adjusting bolt 45 is rotated to move the support bolt 43 to the initial position;

[0042] When installing the sleeve 21, both hands are required to fix the support block 1 and the sleeve 21 respectively, and another person uses the ratchet wrench 23 to rotate the support rod 2 in the opposite direction until the support block 1 and the sleeve 21 are respectively pressed against the inner wall of the pipe 3. The subsequent process is the same as the process without installing the sleeve 21, and will not be repeated here.

[0043] 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.

Claims

1. A pipeline flange assembly device, characterized in that: It includes a support block, a support rod is threadedly connected to the support block, and a fastening nut is fixedly sleeved in the middle of the support rod; a guide cylinder is horizontally fixedly connected to one end of the support block, a slider is slidably inserted in the guide cylinder, a support bolt is vertically arranged and threaded in the slider, a limit block is fixedly embedded in the guide cylinder away from one end of the support block, and the adjustment bolt is threadedly connected in the limit block and can abut against the slider.

2. According to claim 1, a pipeline flange assembly device is characterized in that: It also includes a ratchet wrench, which is arranged on the fastening nut. The ratchet wrench can drive the fastening nut to drive the support rod to rotate.

3. According to claim 2, a pipeline flange assembly device is characterized in that: A limit nut is fixedly connected to the support rod below the ratchet wrench.

4. The pipeline flange assembly device according to claim 1, characterized in that: External threads with opposite rotation directions are provided at both ends of the support rod. One end of the support rod is threadedly connected in the support block and the other end of the support rod is threadedly connected in the sleeve.

5. The pipeline flange assembly device according to claim 1, characterized in that: The spring is arranged in the guide cylinder along the axial direction of the guide cylinder and its two ends are respectively fixedly connected to the slider and the limit block. When the adjusting bolt abuts against the slider, the spring is in a stretched state.

6. The pipeline flange assembly device according to claim 1, characterized in that: An adjusting nut is threadedly connected to the adjusting bolt on the outer side of the guide cylinder.

7. The pipeline flange assembly device according to claim 1, characterized in that: A rotating handle is arranged at the end of the adjusting bolt outside the guide cylinder.

8. The pipeline flange assembly device according to claim 1, characterized in that: A bubble level is horizontally fixedly connected to the support block.

9. The pipeline flange assembly device according to claim 1, characterized in that: A gap adjustment plate is vertically embedded on the support block.

10. The pipeline flange assembly device according to claim 9, characterized in that: Two detachable gap adjustment plates are vertically embedded on the support block, and the two gap adjustment plates are fixedly connected in the support block by fastening bolts.

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