CN116214174A - Pump is with water return bend welding marking complete sets - Google Patents

Abstract

The invention relates to a complete device for welding and scribing a water outlet elbow for a pump, which comprises a working platform, a first installation component and a second installation component, wherein the first installation component comprises a first support frame arranged on the working platform and a plurality of positioning fixtures used for clamping and positioning the periphery of a round bottom plate on an elbow body, the first support frame is provided with a guide rail capable of lifting and positioning in the vertical direction, the guide rail is connected with a chuck through a central slide bar, the central slide bar is rotationally connected with a scribing sleeve, the scribing sleeve is connected with one end of a scribing rod, and the scribing rod is connected with a scribing needle capable of lifting and moving in the vertical direction. The method has the advantages that projection circles can be accurately drawn on the curved wall on the upper side of the bent pipe body so that holes at the filler parts and stuffing box jackets are welded, good coaxiality of the assembled stuffing box jackets and water inlet flanges and the like can be guaranteed, production efficiency is improved, and product quality is improved; the whole structure is relatively simple, and compared with the auxiliary processing of using high-precision numerical control equipment, the cost is greatly saved and the use is convenient.

Description

Pump is with water return bend welding marking complete sets

Technical Field

The invention belongs to the field of production and processing of bent pipes of pumps and similar structures, and particularly relates to a complete device for welding and scribing a water outlet bent pipe for a pump.

Background

The water outlet elbow for the pump is large in size, heavy in weight and complex in shape, and is difficult to process, and particularly the water outlet elbow for the vertical long-axis pump comprises an elbow body, a bottom plate, a water inlet flange, a water outlet flange, a stuffing box and other structural members. The traditional casting production mode has the problems of high difficulty, high secondary rejection rate and high cost, so the cold work welding production process is generally adopted at present, and flanges are required to be welded at two ends of the bent pipe body and holes are formed at the stuffing box part for the rotating shaft of the motor to extend downwards into the bent pipe body and then enter the inner pipe of the pump body during the cold work welding process. In order to ensure higher quality of products, concentricity of corresponding parts must be ensured during welding production and scribing and perforating, and the cost and difficulty for developing a high-precision numerical control machining center specially suitable for the water outlet elbow pipe fitting are high, so that a welding and scribing complete device which has a relatively simple structure and can meet the production precision requirement is necessary to be designed.

Disclosure of Invention

The invention aims to solve the technical problems of high processing difficulty and difficult guarantee of concentricity of corresponding parts in the process of part welding, scribing and perforating when the water outlet elbow pipe is produced in the prior art.

The technical scheme for solving the technical problems is as follows: the utility model provides a pump is with play water return bend welding marking off integrated equipment, its includes work platform, is used for packing position to mark a line and packing box overcoat to place welded first installation component and be used for play water flange to place welded second installation component, first installation component is including locating first support frame on the work platform and be used for right circular bottom plate periphery centre gripping location on the return bend body, be equipped with lift positioning mechanism in the middle of the first support frame top, lift positioning mechanism includes a central slide bar that can go up and down in vertical direction and fix a position, the central slide bar lower extreme is fixed with the chuck that is used for pressing from both sides tight packing box overcoat, the central slide bar rotates and is connected with the cover of marking off, the cover of marking off is connected with the one end of outside extension marking off pole, the interval is equipped with a plurality of marking off holes on the marking off pole, the marking off needle is selected one and is inserted in the marking off hole and can be relative the lifting movement in vertical direction is located the second support frame on the work platform, be equipped with the lifting positioning mechanism that is used for placing water flange on the second support frame.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the lifting positioning mechanism comprises a guide rail, the guide rail is a round guide rail, a plurality of sliding blocks of the round guide rail are fixed on the first support frame at intervals up and down, a rack is fixed on the mounting surface of the round guide rail, a gear meshed with the rack is connected with a bearing seat fixed on the first support frame through a central shaft, one end of the central shaft is fixed with an adjusting hand wheel, a brake positioning mechanism is further arranged on the first support frame, and after the guide rail moves upwards or downwards for a certain distance by rotating the adjusting hand wheel, the guide rail can be positioned through the brake positioning mechanism.

Further, the lifting positioning mechanism comprises a plurality of guide plates which are fixedly arranged on the first support frame at intervals up and down, a flat key which extends along the axial direction is arranged on the outer wall of the central slide rod, a through hole which is in sliding fit with the central slide rod and the flat key is formed in the guide plate, a lifting ring is fixed on the upper end face of the central slide rod, and the lifting ring is connected with a bidirectional self-locking hand winch which is fixed on the first support frame after bypassing a plurality of pulleys through a steel wire rope.

Further, the brake positioning mechanism comprises a brake pressure lever, two bearing seats are arranged at intervals from front to back, the central shaft penetrates through the two bearing seats and is in interference fit with an inner ring of the bearing in the bearing seats, the central shaft is located at a shaft section between the two bearing seats, one end of the brake pressure lever is hinged to a hinge lug fixed on the first support frame, the other end of the brake pressure lever is connected with the first support frame through a locking screw, a brake block is arranged on the upper surface of the middle of the brake pressure lever, and after the locking screw is screwed in and locked in place, the brake block compresses the anti-slip patterns to enable the central shaft to be locked and positioned.

Further, the chuck is a three-jaw self-centering chuck.

Further, the upper end and the lower end of the scribing sleeve are respectively abutted with a limiting ring, the limiting rings are locked and fixed on the central sliding rod, and the scribing rod extends along the horizontal direction.

Further, the upper surface of the working platform is characterized by a crisscross central line, the central axis of the central slide rod is aligned with the intersection point of the central line in the vertical direction, a plurality of groups of positioning parts which are uniformly arranged at intervals in the circumferential direction by taking the intersection point of the central line as the center of a circle are also arranged on the working platform, each group of positioning parts comprises a plurality of positioning holes with gradually increased distance from the intersection point of the central line in the radial direction, and each group of positioning parts is connected with one positioning clamp.

Further, lifting positioning mechanism includes crane and lift drive, the crane is located in the second support frame, lift drive locates on the second support frame or on the work platform and follow the bottom of crane drives the crane is ascending or descending in vertical direction, the second support frame includes the base and is fixed in two vertical pillars of base left and right sides, two the pillar top is through transverse connecting rod fixed connection, the crane is followed the pillar goes up and down.

Further, the crane includes a vertical backplate and is fixed in two horizontal poles of backplate trailing flank upper and lower part, the horizontal pole is located two between the pillar, the backplate is located two the pillar leading flank outside, stop gear is including seting up in the location kidney-shaped hole on backplate upper portion and be fixed in the layer board of backplate leading flank lower part, be equipped with two location screw on the layer board, go out water flange downside compress tightly in the layer board upper edge and by threaded connection in the bolt of location screw makes flange downside back with backplate leading flank compress tightly the laminating, pass the bolt that location kidney-shaped hole and front and back set up the splint relatively makes go out water flange upside the back with backplate leading flank compress tightly the laminating.

Further, the lifting driving device is a jack, and the jack is arranged on the base, and the telescopic end of the jack is tightly propped against the cross rod at the lower part of the lifting frame.

Further, the upper portion of the positioning clamp is provided with a supporting flat plate, the upper portion of the outer side of the supporting flat plate is fixedly provided with a jacking nut, the central axis of the jacking nut is in the horizontal direction, the jacking nut is in threaded connection with a jacking bolt, and the outer edge end face of the bottom plate can be compressed when the jacking bolt is screwed.

The beneficial effects of the invention are as follows:

1) The bottom plate of the water outlet elbow is clamped from the periphery through the plurality of positioning clamps fixed on the plurality of groups of positioning parts, the intersection point of the bottom plate and the central line on the working platform is automatically aligned, and meanwhile, each group of positioning parts is provided with a plurality of pairs of positioning holes, so that the bottom plate with different specifications and sizes can be clamped, and the applicability is good; the lower end of the lifting guide rail is connected with a scribing sleeve, a chuck and the like through a central slide bar, when scribing and perforating are performed, a scribing needle is movably connected in a scribing hole of the scribing bar, and when scribing is performed, the scribing needle automatically lifts along with the change of the height of the curved surface of the upper surface of the water outlet bent pipe, the distance between the scribing needle and the central line of the central slide bar is kept unchanged (the radius is unchanged) in the process, so that a projection circle can be conveniently and accurately drawn on the curved surface, then a tool can be used for perforating a stuffing box part along the scribed line, and the circle center of the projected circle of the scribed hole in the horizontal direction obviously coincides with the central axis of the central slide bar, namely coincides with the center of the bottom plate and the center of the water inlet flange at the lower end; the stuffing box holes and stuffing box jackets corresponding to the water outlet bent pipes with different specifications are different in mounting height, the water outlet bent pipes with different specifications can be mounted with the stuffing box holes and the stuffing box jackets through lifting and positioning of the guide rails, the lower end of the central sliding rod is connected with the chuck, the chuck can clamp and automatically align with the center from the inner wall of the opening of the stuffing box jacket, and the center of the stuffing box is aligned with the center of the water outlet flange after the stuffing box jackets are welded at the holes.

2) After the water outlet elbow is clamped and positioned on the working platform, the lifting frame on the second supporting frame can be used for placing and limiting the water outlet flange, and the lifting driving device can enable the water outlet flange to be lifted or lowered along with the lifting frame so as to be aligned with the water outlet end of the water outlet elbow and spliced, so that the water outlet flange can be welded on the water outlet elbow conveniently. The water outlet flange does not need to be manually lifted and righted, the labor intensity is low, and meanwhile, the water outlet flange can be conveniently aligned with a water outlet of the water outlet elbow fixed on the working platform in a positioned manner through the lifting driving device, so that the operation difficulty is reduced, and the efficiency is higher.

3) The whole set of device structural design is exquisite, can be better be arranged in production processes such as go out water return bend welding marking, improves production efficiency and makes the quality of product effectively promote, does not need to use the auxiliary processing of large-scale high accuracy numerical control equipment, can make the product precision satisfy the requirement, low in production cost.

Drawings

FIG. 1 is a front view (guide rails not all shown) of a pump outlet elbow welding and scribing kit provided by the invention;

FIG. 2 is an isometric view of the work platform, elbow body and first mounting assembly of FIG. 1, as viewed from the left front side;

FIG. 3 is an isometric view of the work platform, elbow body and first mounting assembly of FIG. 1, as viewed from the left rear side;

FIG. 4 is a front view of the device of FIG. 2;

FIG. 5 is a top view of the device of FIG. 2;

FIG. 6 is an isometric view of the assembled rail, center slide bar, scribe line sleeve, etc. of FIG. 2;

FIG. 7 is a front view of the structural component shown in FIG. 6;

FIG. 8 is a top view of the structural member shown in FIG. 6;

FIG. 9 is a left side view of the work platform and second mounting assembly of FIG. 1;

FIG. 10 is a top view of the work platform of FIG. 1;

FIG. 11 is an isometric view of the second mounting assembly of FIG. 1;

FIG. 12 is an isometric view of the positioning fixture of FIG. 2 (a jack bolt not shown);

FIG. 13 is an isometric view of a pump water outlet elbow welding and scribing complete set device for realizing the lifting of a central slide bar through a two-way self-locking hand winch;

fig. 14 is an isometric view of a center slide bar with flat keys and its lower end related components in the device shown in fig. 13.

In the drawings, the list of components represented by the various numbers is as follows:

1. a working platform; 2. a first support frame; 3. a bent pipe body; 4. a bottom plate; 5. positioning a clamp; 6. a guide rail; 7. a central slide bar; 8. a chuck; 9. a scribing sleeve; 10. a scribing rod; 11. scribing holes; 12. a scribing needle; 13. a second support frame; 14. a water outlet flange; 15. a slide block; 16. a rack; 17. a gear; 18. a central shaft; 19. a bearing seat; 20. an adjusting hand wheel; 21. anti-skid lines; 22. a brake lever; 23. a hinge ear; 24. a brake pad; 25. locking the screw; 26. a center line; 27. a positioning part; 28. a base; 29. a support post; 30. a back plate; 31. a cross bar; 32. positioning the kidney-shaped hole; 33. a supporting plate; 34. positioning screw holes; 35. a support plate; 36. tightly pushing the nut; 37. a limiting plate; 38. a guide plate; 39. a flat key; 40. a hanging ring; 41. a wire rope; 42. a pulley; 43. two-way self-locking hand winch.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings and specific embodiments, the examples being provided for illustration only and not for the purpose of limiting the invention.

In the description of the present invention, if terms indicating orientations such as "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are used, the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present invention.

As shown in fig. 1 to 14, the invention provides a complete set of welding and marking device for a water outlet elbow pipe for a pump, which comprises a working platform 1, a first installation component for marking a filler part and placing and welding a filler box jacket, and a second installation component for placing and welding a water outlet flange 14, wherein the first installation component comprises a first support frame 2 arranged on the working platform 1 and a plurality of positioning fixtures 5 used for clamping and positioning the periphery of a circular bottom plate 4 on the elbow pipe body 3, a lifting positioning mechanism is arranged in the middle of the top of the first support frame 2, the lifting positioning mechanism comprises a central slide rod 7 capable of lifting and positioning in the vertical direction, a chuck 8 used for clamping the filler box jacket is fixed at the lower end of the central slide rod 7, the central slide rod 7 is rotatably connected with a marking sleeve 9, the marking sleeve 9 is connected with one end of a marking rod 10 extending outwards, a plurality of marking holes 11 are formed in the marking rod 10 at intervals, a marking needle 12 is alternatively inserted into the marking holes 11 and can move up and down in the vertical direction relative to the marking holes 11, the second installation component comprises a second support frame 13 arranged on the working platform 1, and the second support frame 13 is provided with a lifting positioning mechanism used for placing the water outlet flange 13.

The production and welding assembly of the bent pipe body, the bottom plate and the water inlet flange are completed before the complete equipment is used, and the assembled parts after the welding assembly of the bent pipe body, the bottom plate and the water inlet flange are placed on the complete equipment for clamping and positioning, scribing, perforating, stuffing box placement welding, water outlet flange alignment welding and other procedures. The holes on the upper and lower surfaces of the bottom plate can be cut into hole lines on the upper and lower planes of the bottom plate by using the bottom plate hole template in a factory, and the bottom plate hole is cut according to the lines, so that the production and the assembly of the bottom plate and the elbow body, and the assembly of the elbow body and the water inlet flange are well known to those skilled in the art, and the complete set of the device provided by the invention is not needed to be repeated here. When the scribing needle is used for scribing, the lower needle point can be attached to the curved surface wall of the bent pipe body by means of self weight, and the lower needle point can automatically lift along with the height change of the curved surface.

In one embodiment of the present invention, as shown in fig. 6 to 8, the lifting positioning mechanism includes a guide rail 6, the guide rail 6 is a circular guide rail, a plurality of sliding blocks 15 of the circular guide rail are fixed on the first support frame 2 at intervals up and down, a rack 16 is fixed on a mounting surface of the circular guide rail, a gear 17 meshed with the rack 16 is connected with a bearing seat 19 fixed on the first support frame 2 through a central shaft 18, one end of the central shaft 18 is fixed with an adjusting hand wheel 20, a brake positioning mechanism is further provided on the first support frame 2, and after the guide rail 6 is moved up or down by a distance by rotating the adjusting hand wheel 20, the guide rail 6 can be positioned by the brake positioning mechanism.

It should be noted that, the number of the sliding blocks is preferably two, as shown in fig. 2 to 4, the two sliding blocks are fixed on two transverse rods on the first supporting frame at intervals up and down, the guide rail is in sliding fit with the sliding blocks, and the guide rail has a degree of freedom of sliding in the vertical direction up and down relative to the sliding blocks.

In one embodiment of the present invention, the brake positioning mechanism includes a brake lever 22, the bearing blocks 19 are arranged at intervals in front and back, the central shaft 18 penetrates through the two bearing blocks 19 and is in interference fit with the inner ring of the bearing in the bearing block 19, an anti-slip pattern 21 is arranged on a shaft section of the central shaft 18 between the two bearing blocks 19, one end of the brake lever 22 is hinged with a hinge lug 23 fixed on the first support frame 2, the other end is connected with the first support frame 2 through a locking screw 25, a brake block 24 is arranged on the upper surface of the middle part of the brake lever 22, and after the locking screw 25 is screwed in and locked in place, the brake block 24 compresses the anti-slip pattern 21 to fix the central shaft 18 in a rotation stopping manner.

It should be noted that, the brake positioning mechanism is not limited to the above-mentioned form of hinging through brake depression bar one end, and the other end adjusts the compressive force between brake block and the anti-skid pattern through the locking screw, but can also be other modes, for example adjust the tight brake block of top and brake depression bar together move along spout limit structure through the bolt in order to compress tightly the anti-skid pattern.

In one embodiment of the invention, the chuck 8 is a three-jaw self-centering chuck.

The three-jaw self-centering chuck is a commercial product, and when a rotating piece in a side hole rotates to drive a fluted disc in the chuck to rotate, three jaws are synchronously far away from or close to the center of the chuck, so that when the three jaws clamp the opening inner diameter of a target object (a stuffing box outer sleeve), the center of the opening of the target object is overlapped with the center axes of the center of the chuck and a center sliding rod, and self-centering alignment is realized.

In one embodiment of the present invention, the upper and lower ends of the scribing sleeve 9 are respectively abutted against a limiting ring, the limiting rings are locked and fixed on the central sliding rod 7, and the scribing rod 10 extends along the horizontal direction.

It should be noted that the scribing sleeve is not movable relative to the central slide rod in the axial direction, but can rotate relative to the central slide rod by 360 degrees only in the circumferential direction, so that the scribing needle can rotate around the central axis of the central slide rod, and the precise scribing work is completed.

In one embodiment of the present invention, as shown in fig. 13 and 14, the lifting positioning mechanism includes a plurality of guide plates 38 fixedly disposed on the first support frame 2 at intervals up and down, a flat key 39 extending along an axial direction is disposed on an outer wall of the central slide bar 7, a through hole slidingly engaged with the central slide bar 7 and the flat key 39 is formed on the guide plate 38, a hanging ring 40 is fixed on an upper end surface of the central slide bar 7, and the hanging ring 40 bypasses a plurality of pulleys 42 through a wire rope 41 and is connected with a bidirectional self-locking hand winch 43 fixed on the first support frame 2. The main components of the bidirectional self-locking hand winch used in the invention are as follows: model 1800LB, rated lifting weight 300kg, steel wire rope diameter 5mm, reliable bidirectional ratchet self-locking function, handle operating force 19kg under full load.

It should be noted that, for the structure that realizes the lift location of center slide bar through guide rail and brake positioning mechanism, through establishing the flat key on the center slide bar in this embodiment to the spacing direction of deflector, connect two-way auto-lock hand capstan winch through wire rope simultaneously, realized the lift and the location of center slide bar equally, the structure is simpler relatively, can effectively save the cost.

In one embodiment of the present invention, a crisscrossed center line 26 is carved on the upper surface of the working platform 1, the central axis of the central slide rod 7 is aligned with the intersection point of the center line 26 in the vertical direction, a plurality of groups of positioning portions 27 are uniformly arranged on the working platform 1 at intervals in the circumferential direction by taking the intersection point of the center line 26 as a center, each group of positioning portions 27 comprises a plurality of positioning holes with gradually increasing distance from the intersection point of the center line 26 in the radial direction, and each group of positioning portions 27 is connected with one positioning fixture 5.

It can be understood that the plurality of positioning holes arranged on each group of positioning parts are arranged according to the diameters of the bottom plates of the water outlet elbows with a plurality of specifications, which are required to be assembled and produced in a factory, so that after each positioning fixture is arranged at the corresponding positioning hole, the bottom plates of the water outlet elbows with the corresponding specifications can be clamped and positioned better. The left and right side plates and the rear side plate of the bottom of the first support frame shown in fig. 1, fig. 2, fig. 13 and the like are provided with marking lines or positioning backing plates for aligning with the center line on the workbench. As shown in fig. 13, the positioning pad plates are three, and are respectively located at the bottoms of the left side plate, the right side plate and the rear side plate of the bottom of the first support frame (the three positioning pad plates are distributed in a triangle shape), and the side edges of the positioning pad plates are aligned with the center line, so that the intersection point of the central axis of the central slide rod and the center line is ensured to be aligned in the vertical direction. Likewise, a marking line or a positioning backing plate which is used for aligning with the center line on the workbench is also arranged on the base of the second support frame.

In one embodiment of the present invention, the lifting positioning mechanism includes a lifting frame and a lifting driving device, the lifting frame is disposed in the second supporting frame 13, the lifting driving device is disposed on the second supporting frame 13 or the working platform 1 and drives the lifting frame to lift or descend in a vertical direction from a bottom of the lifting frame, the second supporting frame 13 includes a base 28 and two vertical struts 29 fixed on left and right sides of the base 28, top ends of the two struts 29 are fixedly connected through transverse links, and the lifting frame lifts along the struts 29. The base can be formed by welding and fixing a plurality of square steel pipes, and reinforcing rib plates can be arranged at necessary positions for ensuring stability.

It should be noted that, the stop gear on the crane can guarantee that the posture of play water flange on the crane keeps unchanged, keeps to vertical state promptly, neither can appear rocking the turnover back and forth in the lift in-process, also can not appear circumference rotation.

In one embodiment of the present invention, the lifting frame includes a vertical back plate 30 and two cross bars 31 fixed on the upper and lower parts of the back side of the back plate 30, the cross bars 31 are located between the two support posts 29, the back plate 30 is located outside the front side of the two support posts 29, the limiting mechanism includes a positioning kidney-shaped hole 32 formed on the upper part of the back plate 30 and a supporting plate 33 fixed on the lower part of the front side of the back plate 30, two positioning screw holes 34 are formed on the supporting plate 33, the lower side of the water outlet flange 14 is pressed on the upper edge of the supporting plate 33, and the back surface of the lower side of the flange is pressed and jointed with the front side of the back plate 30 by bolts screwed to the positioning screw holes 34, and the back surface of the upper side of the water outlet flange 14 is pressed and jointed with the front side of the back plate 30 by bolts passing through the positioning kidney-shaped hole 32 and the front and rear opposite clamping plates. The upper part of the supporting plate 14 is provided with an inverted trapezoid groove which is convenient for the lower edge of the water outlet flange 8 to be put in.

It should be noted that the clamping plate and the bolt, however, those skilled in the art will understand from the above description that, for example, the bolt is screwed to the positioning screw hole on the lower side of the flange, and the other end of the bolt may extend upward through an angle of the pad (the bolt passes through the pad) to be pressed against the front side of the lower side of the water outlet flange when the bolt is screwed.

In one embodiment of the invention, the lifting drive is a jack, which is placed on the base 28 and the telescopic end is pressed against the cross bar 31 in the lower part of the lifting frame.

The lifting driving device is used for lifting the lifting frame relative to the support, and is not necessarily a jack, and can also drive lifting in a manner of winding and unwinding the pull rope in a mode of matching a motor, a stranded wire wheel, the pull rope, a fixed pulley and the like.

In one embodiment of the present invention, two ends of the cross bar are abutted against inner side surfaces of two upright posts, and the front and rear side surfaces of the upright posts are fixed with limiting plates 37, and the cross bar moves up and down in limiting grooves formed by the two limiting plates 16.

It can be understood that, in order to avoid the forward and backward shaking or tipping of the lifting frame during lifting, the limiting plate can realize the functions, but the limiting plate is not necessarily realized, and the two opposite sides of the two support posts are provided with sliding grooves, two ends of the sliding grooves are provided with cross bars to extend in, the two ends of the cross bars can move up and down in the sliding grooves, and the cross bars have no freedom degree in the forward and backward directions relative to the sliding grooves.

In one embodiment of the present invention, the upper portion of the positioning fixture 5 is provided with a supporting plate 35, and a tightening nut 36 is fixed on the upper portion of the outer side of the supporting plate 35, the central axis of the tightening nut 36 is in the horizontal direction, and a tightening bolt is screwed on the tightening nut 36, and when the tightening bolt is screwed, the tightening bolt can compress the outer edge end surface of the bottom plate 4.

The application method of the pump water outlet elbow welding and scribing complete device provided by the invention is briefly described as follows:

the first support frame is arranged on the working platform, alignment and positioning are carried out to enable the central axis of the central slide bar to be aligned with the intersection point of the central line on the working platform, the bent pipe body which is assembled with the water inlet flange and the bottom plate in a preliminary way is arranged in the area enclosed by each positioning clamp of the working platform, then the jacking bolts are screwed, the screwing turns of the jacking bolts on each positioning clamp are guaranteed to be basically the same, and therefore the bottom plate is clamped, and the centers of the bottom plate and the water inlet flange are aligned with the intersection point of the central line which is marked on the working platform in the vertical direction. And then a lifting scribing needle on the first support frame is used for scribing an open hole line of the filler part on the bent pipe body (the guide rail is adjusted to be lifted to a proper height in advance according to the specification of the bent pipe body and locked by the brake block, and then the scribing rod and the scribing sleeve are rotated to scribe the open hole line), and cutting is performed after the open hole line is scribed. Then the self-centering three-jaw chuck at the lower end of the central slide rod is used for clamping the stuffing box outer sleeve, the stuffing box outer sleeve is inserted into the cut hole, an intersecting line is drawn after the height is adjusted, then cutting is carried out, and assembling and welding are carried out after the completion of the cutting. And finally, arranging the water outlet flange on the water outlet of the bent pipe body by using a second support frame, and welding and assembling after lifting adjustment and alignment.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The utility model provides a go out water return bend welding and draw complete equipment for pump, its characterized in that, including work platform (1), be used for packing position marking off and packing box overcoat place welded first installation component and be used for play water flange (14) place welded second installation component, first installation component is including locating first support frame (2) on work platform (1) and be used for right circular bottom plate (4) peripheral centre gripping location on return bend body (3) a plurality of positioning fixture (5), be equipped with elevating locating mechanism in the middle of first support frame (2) top, elevating locating mechanism includes a center slide bar (7) that can go up and down in vertical direction and fix a position, center slide bar (7) lower extreme is fixed with chuck (8) that are used for pressing from both sides tight packing box overcoat, center slide bar (7) rotate and are connected with marking off cover (9), marking off cover (9) are connected with the one end of outside extension marking off pole (10), the interval is equipped with a plurality of marking off holes (11) on marking off pole (10), marking off needle (12) alternative insert in hole (11) and can be located in the vertical direction (11) and can be equipped with in second support frame (13) relative elevating mechanism (13) are located on the second support frame (13).

2. The pump water outlet elbow welding and scribing complete equipment according to claim 1, characterized in that the lifting positioning mechanism comprises a guide rail (6), the lower end of the guide rail (6) is fixed with the upper end of a central sliding rod (7), the guide rail (6) is a round guide rail, a plurality of sliding blocks (15) which are in sliding fit with the round guide rail are fixed on the first support frame (2) at intervals up and down, a rack (16) is fixed on the installation surface of the round guide rail, a gear (17) meshed with the rack (16) is connected with a bearing seat (19) fixed on the first support frame (2) through a central shaft (18), one end of the central shaft (18) is fixed with an adjusting hand wheel (20), a brake positioning mechanism is further arranged on the first support frame (2), and the guide rail (6) can be positioned through the brake positioning mechanism after the guide rail (6) moves up or down a certain distance.

3. The water outlet elbow welding and scribing complete equipment for the pump according to claim 2, wherein the brake positioning mechanism comprises brake pressure rods (22), two bearing seats (19) are arranged at intervals in the front-back direction, the central shaft (18) penetrates through the two bearing seats (19) and is in interference fit with an inner ring of the bearing in the bearing seats (19), anti-skid patterns (21) are arranged on a shaft section of the central shaft (18) between the two bearing seats (19), one end of each brake pressure rod (22) is hinged with a hinge lug (23) fixed on the first support frame (2), the other end of each brake pressure rod is connected with the first support frame (2) through a locking screw (25), a brake block (24) is arranged on the upper surface of the middle part of each brake pressure rod (22), and after the locking screw (25) is screwed in place, the brake block (24) compresses the anti-skid patterns (21) to enable the central shaft (18) to be positioned in a rotation stopping mode.

4. The water outlet elbow welding and scribing complete device for the pump according to claim 1, wherein the lifting positioning mechanism comprises a plurality of guide plates (38) which are fixedly arranged on the first support frame (2) at intervals up and down, a flat key (39) which extends along the axial direction is arranged on the outer wall of the central slide rod (7), through holes which are in sliding fit with the central slide rod (7) and the flat key (39) are formed in the guide plates (38), a lifting ring (40) is fixed on the upper end surface of the central slide rod (7), and the lifting ring (40) is connected with a bidirectional self-locking hand winch (43) which is fixed on the first support frame (2) after bypassing a plurality of pulleys (42) through steel ropes (41).

5. The complete set of the welding and scribing device for the water outlet bent pipe for the pump according to claim 1, wherein the chuck (8) is a three-jaw self-centering chuck, the upper end and the lower end of the scribing sleeve (9) are respectively abutted with a limiting ring, the limiting rings are locked and fixed on the central sliding rod (7), and the scribing rod (10) extends along the horizontal direction.

6. The pump water outlet elbow welding and scribing complete equipment according to claim 1, wherein a crisscross central line (26) is marked on the upper surface of the working platform (1), the central axis of the central sliding rod (7) is aligned with the cross point of the central line (26) in the vertical direction, a plurality of groups of positioning parts (27) which are uniformly arranged at intervals in the circumferential direction by taking the cross point of the central line (26) as a circle center are further arranged on the working platform (1), each group of positioning parts (27) comprises a plurality of positioning holes with gradually increased distance from the cross point of the central line (26) in the radial direction, and each group of positioning parts (27) is connected with one positioning clamp (5).

7. The water outlet elbow welding and scribing complete equipment for the pump according to claim 1, wherein the lifting and positioning mechanism comprises a lifting frame and a lifting driving device, the lifting frame is arranged in the second supporting frame (13), the lifting driving device is arranged on the second supporting frame (13) or the working platform (1) and drives the lifting frame to lift or descend in the vertical direction from the bottom of the lifting frame, the second supporting frame (13) comprises a base (28) and two vertical supporting columns (29) fixed on the left side and the right side of the base (28), the top ends of the two supporting columns (29) are fixedly connected through transverse connecting rods, and the lifting frame lifts along the supporting columns (29).

8. The pump water outlet elbow welding and scribing complete set according to claim 7, wherein the lifting frame comprises a vertical backboard (30) and two cross bars (31) fixed on the upper and lower parts of the rear side surface of the backboard (30), the cross bars (31) are positioned between the two support posts (29), the backboard (30) is positioned on the outer sides of the front side surfaces of the two support posts (29), the limiting mechanism comprises a positioning waist-shaped hole (32) formed in the upper part of the backboard (30) and a supporting plate (33) fixed on the lower part of the front side surface of the backboard (30), two positioning screw holes (34) are formed in the supporting plate (33), the lower side of the water outlet flange (14) is pressed on the upper edge of the supporting plate (33), and bolts connected with the positioning screw holes (34) through threads enable the lower side back surface of the flange to be pressed and attached to the front side surface of the backboard (30), and the clamping plate (14) is arranged through the positioning waist-shaped hole (32) and the bolts oppositely arranged in the front and back side.

9. The pump water outlet elbow welding and scribing complete equipment according to claim 8, wherein the lifting driving device is a jack, the jack is arranged on the base (28) and the telescopic end is tightly propped against the cross rod (31) at the lower part of the lifting frame.

10. The water outlet elbow welding and scribing complete set for the pump according to any one of claims 1 to 9, wherein a supporting flat plate (35) is arranged on the upper portion of the positioning clamp (5), a tightening nut (36) is fixed on the upper portion of the outer side of the supporting flat plate (35), the central axis of the tightening nut (36) is in the horizontal direction, a tightening bolt is in threaded connection with the tightening nut (36), and the outer edge end face of the bottom plate (4) can be compressed when the tightening bolt is screwed.

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