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

Abstract

The invention relates to a complete set of equipment for welding and scribing of water outlet elbows for pumps, which includes a working platform, a first installation assembly and a second installation assembly. The first installation assembly includes a first support frame on the work platform and a A plurality of positioning fixtures are clamped and positioned around the circular bottom plate on the elbow body. A guide rail that can be lifted and positioned in the vertical direction is provided on the first support frame. The guide rail is connected to the chuck through the center slide bar, and the center slide bar rotates. A scribing sleeve is connected, and the scribing sleeve is connected with one end of the scribing rod, and the scribing rod is connected with a scribing needle that can move up and down in the vertical direction. The advantage is that it can accurately draw a projected circle on the curved wall of the upper side of the elbow body so that the opening of the packing part and the outer casing of the stuffing box can be placed and welded, and it can ensure a good fit between the outer casing of the stuffing box and the water inlet flange after assembly. Concentricity improves production efficiency and product quality; the overall structure is relatively simple, which greatly saves costs and is easy to use compared to using high-precision CNC equipment for auxiliary processing.

Description

A complete set of equipment for welding and scribing of water outlet elbows for pumps

technical field

The invention belongs to the field of production and processing of pumps and elbows with similar structures, and in particular relates to a complete set of equipment for welding and scribing of water outlet elbows for pumps.

Background technique

Outlet elbows for pumps are usually large in size and weight and complex in shape, and are difficult to process, especially for outlet elbows for vertical long-axis pumps, which include elbow bodies, bottom plates, inlet flanges, and outlet methods. There are multiple structural parts such as flange and stuffing box. The traditional casting production method has the problems of high difficulty, high scrap rate and high cost. Therefore, cold work welding is generally used for production and processing. Hole is inserted in the pipe in the pump inner body after the rotating shaft of power supply motor extends downward into the elbow body. In order to ensure the high quality of the product, the concentricity of the corresponding parts must be guaranteed during welding production and scribing and opening. It is costly and difficult to develop a high-precision CNC machining center specially suitable for outlet elbow fittings, so it is necessary to design The utility model relates to a complete set of welding and scribing devices with a relatively simple structure and which can meet the requirements of production precision.

Contents of the invention

The technical problem to be solved by the present invention is to provide a complete set of welding and scribing devices for outlet elbows for pumps, which aims to overcome the difficult processing of parts welding and scribing and opening processes in the production of outlet elbows in the prior art. The technical defect that the concentricity is not easy to guarantee.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a complete set of equipment for welding and scribing of water outlet elbows for pumps, which includes a working platform, a first installation assembly for scribing the packing part and placing and welding the outer casing of the stuffing box, and a The flange is placed on the second installation assembly welded, and the first installation assembly includes a first support frame set on the working platform and a plurality of brackets for clamping and positioning the periphery of the circular bottom plate on the elbow body. Positioning fixture, the middle of the top of the first support frame is provided with a lifting and positioning mechanism, the lifting and positioning mechanism includes a center slide bar that can be lifted and positioned in the vertical direction, and the lower end of the center slide bar is fixed with a The chuck of the letter jacket, the center slide bar is rotatably connected with a marking sleeve, and the marking sleeve is connected with one end of a marking rod extending outward, and a plurality of marking holes are arranged at intervals on the marking rod. One of the scribing needles is inserted into the scribing hole and can move up and down in the vertical direction relative to the scribing hole. The second installation assembly includes a second support frame arranged on the working platform, and the first The second supporting frame is provided with a lifting and positioning mechanism for placing the water outlet flange.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the lifting and positioning mechanism includes a guide rail, the guide rail is a circular guide rail, a plurality of sliders of the circular guide rail are fixed on the first support frame at intervals up and down, and the mounting surface of the circular guide rail is fixed There is a rack, and the gear meshed with the rack is connected with the bearing seat fixed on the first support frame through the central shaft. One end of the central shaft is fixed with an adjustment handwheel, and the first support frame is also A brake positioning mechanism is provided, and after turning the adjusting hand wheel to move the guide rail up or down for a certain distance, the guide rail can be positioned through the brake positioning mechanism.

Further, the lifting and positioning mechanism includes a plurality of guide plates fixed up and down on the first support frame at intervals, a flat key extending in the axial direction is provided on the outer wall of the central sliding rod, and a set of guide plates is provided on the guide plate A through hole that slides and fits with the center slide bar and the flat key. A suspension ring is fixed on the upper end surface of the center slide bar. Self-locking hand winch connection.

Further, the brake positioning mechanism includes a brake pressure rod. There are two bearing seats spaced apart from each other. The central shaft runs through the two bearing seats and is in interference fit with the inner ring of the bearing in the bearing seat. The central shaft is provided with anti-slip lines on the shaft section between the two bearing seats, one end of the brake lever is hinged to the hinge ear fixed on the first support frame, and the other end is connected to the The first support frame is connected, and the upper surface of the middle part of the brake lever is provided with a brake pad. After the locking screw is screwed in and locked in place, the brake pad presses the anti-skid pattern to prevent the rotation of the central shaft.

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

Further, the upper and lower ends of the scribe sleeve abut against a limit ring respectively, the limit ring is locked and fixed on the central slide bar, and the scribe bar extends along the horizontal direction.

Further, the upper surface of the working platform is marked with a cross centerline, the intersection point of the central axis of the center slide bar and the centerline is vertically aligned, and the working platform is also provided with the The intersection point of the center line is a plurality of sets of positioning parts whose center is evenly spaced in the circumferential direction, and each set of positioning parts includes a plurality of positioning holes whose distance from the intersection point of the center line in the radial direction gradually increases. One positioning fixture is connected to each positioning part.

Further, the lifting and positioning mechanism includes a lifting frame and a lifting drive device, the lifting frame is arranged in the second support frame, and the lifting drive device is arranged on the second support frame or the working platform and moves from The bottom of the lifting frame drives the lifting frame to rise or fall in the vertical direction. The second support frame includes a base and two vertical pillars fixed on the left and right sides of the base. The connecting rod is fixedly connected, and the lifting frame is lifted and lowered along the pillar.

Further, the lifting frame includes a vertical backboard and two crossbars fixed on the upper and lower parts of the rear side of the backboard, the crossbar is located between the two pillars, and the backboard is located between the two pillars. On the outer side of the front side, the limit mechanism includes a positioning waist-shaped hole opened on the upper part of the backboard and a supporting plate fixed on the lower part of the front side of the backboard. The supporting plate is provided with two positioning screw holes. The lower side of the water outlet flange is pressed against the upper edge of the supporting plate and is threadedly connected to the positioning screw hole so that the back side of the flange is pressed against the front side of the back plate and passes through the positioning screw hole. The waist-shaped hole and the bolts of splints oppositely arranged front and back make the back of the upper side of the water outlet flange tightly fit with the front side of the back plate.

Further, the lifting driving device is a jack, and the jack is placed on the base, and the telescopic end of the jack is tightly pressed against the cross bar at the lower part of the lifting frame.

Further, the upper part of the positioning jig has a support plate and a jacking nut is fixed on the upper outside of the support plate, the central axis of the jacking nut is along the horizontal direction and a jacking bolt is threadedly connected to the jacking nut, and the jacking nut When the tightening bolts are tightened, the outer edge end surface of the base plate can be compressed.

The beneficial effects of the present invention are:

1) Through multiple positioning fixtures fixed on multiple sets of positioning parts, the bottom plate of the water outlet elbow is clamped from the periphery and the intersection point of the bottom plate and the center line on the working platform is automatically aligned. At the same time, each set of positioning parts has multiple pairs of positioning The hole can be used for clamping the bottom plates of different specifications and sizes, and has good applicability; the lower end of the liftable guide rail is connected to the marking sleeve and the chuck through the central slide bar. The curved wall on the upper side of the main body draws a circle, so the present invention movably connects the scribing needle to the scribing hole of the scribing rod. During this process, the distance from the center line of the center slide rod remains unchanged (the radius remains unchanged), so that it is more convenient and accurate to draw a projected circle on the surface, and then use tools to align the stuffing box along the drawn line. Open the hole, the center of the projection circle of the hole in the horizontal direction obviously coincides with the central axis of the center slide rod, that is, coincides with the center of the bottom plate and the center of the water inlet flange at the lower end; the outlet elbows of different specifications correspond to The opening of the stuffing box and the installation height of the stuffing box cover are different. Through the lifting and positioning of the guide rails, the opening of the stuffing box and the installation of the cover of the stuffing box can be carried out for outlet elbows with different height specifications. The lower end of the center slide rod is connected to the chuck. The disk can be clamped and clamped from the inner wall of the opening of the stuffing box jacket and automatically aligned to the center to ensure that after the stuffing box jacket is welded at the opening, the center of the stuffing box is aligned with the center of the outlet flange.

2) After the water outlet elbow is clamped and positioned on the working platform, the lifting frame on the second support frame can place and limit the water outlet flange, and the lifting drive device can make the water outlet flange rise or fall with the lifting frame to align with the water outlet bend. The water outlet end of the pipe is aligned and assembled, so as to facilitate subsequent welding of the water outlet flange to the water outlet elbow. There is no need to manually lift and straighten the water outlet flange, and the labor intensity is low. At the same time, the lifting of the water outlet flange by the lifting drive device can be more conveniently aligned with the water outlet of the water outlet elbow that has been positioned and fixed on the working platform, and the operation difficulty is reduced and the efficiency is higher. high.

3) The structure design of the whole set of equipment is exquisite, which can be better used in production processes such as welding and scribing of water outlet elbows to improve production efficiency and effectively improve product quality. It does not need to use large-scale high-precision CNC equipment for auxiliary processing. The precision of the product meets the requirements, and the production cost is low.

Description of drawings

Fig. 1 is a front view of a complete set of equipment for welding and scribing of outlet elbows for pumps provided by the present invention (not all guide rails are shown);

Fig. 2 is an axonometric view of the working platform, the bent pipe body and the first installation assembly in Fig. 1 viewed from the left front side;

Fig. 3 is an axonometric view of the working platform, the bent pipe body and the first mounting assembly in Fig. 1 viewed from the left rear side;

Fig. 4 is the front view of device shown in Fig. 2;

Fig. 5 is the top view of device shown in Fig. 2;

Fig. 6 is an axonometric view after assembly of components such as the guide rail, the center slide bar, and the marking sleeve in Fig. 2;

Figure 7 is a front view of the structural components shown in Figure 6;

Fig. 8 is a top view of the structural components shown in Fig. 6;

Fig. 9 is a left view of the working platform and the second installation assembly in Fig. 1;

Fig. 10 is the top view of working platform in Fig. 1;

Figure 11 is an axonometric view of the second mounting assembly in Figure 1;

Fig. 12 is an axonometric view of the positioning fixture in Fig. 2 (tightening bolts are not shown);

Fig. 13 is an axonometric view of the pump outlet elbow welding and scribing complete set for lifting and lowering the central sliding rod through a two-way self-locking hand winch provided by the present invention;

Figure 14 is an isometric view of the center slide bar with the flat key and its lower end relative parts in the device shown in Figure 13 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Working platform; 2. First support frame; 3. Bend pipe body; 4. Bottom plate; 5. Positioning fixture; 6. Guide rail; 7. Center slide rod; 8. Chuck; Marking rod; 11, marking hole; 12, marking needle; 13, second support frame; 14, water outlet flange; 15, slider; 16, rack; 17, gear; 18, central shaft; 19, Bearing seat; 20. Adjusting hand wheel; 21. Anti-slip pattern; 22. Brake lever; 23. Hinged ear; 24. Brake pad; 25. Locking screw; 26. Center line; 27. Positioning part; 28. Base; 29 , pillar; 30, backboard; 31, cross bar; 32, positioning waist-shaped hole; 33, supporting plate; 34, positioning screw hole; 35, supporting plate; 36, jacking nut; 37, limit plate; 38, Guide plate; 39, flat key; 40, suspension ring; 41, wire rope; 42, pulley; 43, two-way self-locking hand winch.

Detailed ways

The principles and features of the present invention will be described below in conjunction with the accompanying drawings and specific embodiments. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, if terms such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" are used to indicate orientation, the indicated The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be configured in a specific orientation, and operation, and therefore should not be construed as limiting the invention.

As shown in Figures 1 to 14, the present invention provides a complete set of equipment for welding and scribing of outlet elbows for pumps, which includes a working platform 1, a first installation assembly for scribing the packing part and placing and welding the outer casing of the stuffing box, and for The outlet flange 14 places the second installation assembly welded, and the first installation assembly includes the first support frame 2 on the working platform 1 and the circumference of the circular bottom plate 4 on the elbow body 3. A plurality of positioning fixtures 5 for clamping and positioning, a lifting and positioning mechanism is provided in the middle of the top of the first support frame 2, and the lifting and positioning mechanism includes a center slide bar 7 that can be lifted and positioned in the vertical direction. The lower end of the slide bar 7 is fixed with a chuck 8 for clamping the outer cover of the stuffing box. The center slide bar 7 is rotatably connected with a marking sleeve 9, and the marking sleeve 9 is connected with one end of the marking rod 10 extending outwards. The marking rod 10 is provided with a plurality of marking holes 11 at intervals, and one of the marking needles 12 is inserted into the marking hole 11 and can move up and down in the vertical direction relative to the marking hole 11. The second installation assembly includes a second support frame 13 arranged on the working platform 1 , and the second support frame 13 is provided with a lifting and positioning mechanism for placing the water outlet flange 14 .

It should be noted that the production and welding assembly of the elbow body, the bottom plate and the water inlet flange are completed before using the complete set of the present invention, and the assembled parts after the welding and assembly of the three are placed on the complete set of the present invention for clamping and positioning , scribing, opening, stuffing box placement welding, outlet flange alignment welding and other processes. Among them, the openings on the upper and lower surfaces of the base plate can be used in the factory to draw the opening line on the upper and lower planes of the base plate, and complete the cutting of the base plate hole according to the line, the production and processing of the base plate and its assembly with the elbow body, The assembly of the elbow body and the water inlet flange is well known to those skilled in the art and may not rely on the above-mentioned complete set provided by the present invention, so details are not repeated here. When the scribing needle is scribing, it can rely on its own weight to make the lower tip of the needle stick to the curved wall of the elbow body and automatically rise and fall as the height of the curved surface changes.

In one embodiment of the present invention, as shown in Figures 6 to 8, the lifting positioning mechanism includes a guide rail 6, the guide rail 6 is a circular guide rail, and a plurality of sliders 15 of the circular guide rail are fixed on the upper and lower intervals. On the first supporting frame 2, a rack 16 is fixed on the installation surface of the circular guide rail, and the gear 17 meshing with the rack 16 is connected with the gear fixed on the first supporting frame 2 through the central shaft 18. The bearing seat 19 is connected, and one end of the central shaft 18 is fixed with an adjustment handwheel 20, and the first support frame 2 is also provided with a brake positioning mechanism, and the rotation of the adjustment handwheel 20 makes the guide rail 6 move up or down. After moving a certain distance, the guide rail 6 can be positioned by the brake positioning mechanism.

It should be noted that the number of sliders is preferably two, as shown in Figures 2 to 4, the two sliders are spaced up and down and fixed on the two transverse rods on the first support frame, and the guide rail is slidably matched with the slider , relative to the slider, the guide rail has and only has the freedom to slide vertically up and down.

In one embodiment of the present invention, the brake positioning mechanism includes a brake lever 22, and there are two bearing seats 19 spaced front and rear, the central shaft 18 runs through the two bearing seats 19 and is connected to the bearing The inner ring of the bearing in the seat 19 is interference fit, the central shaft 18 is provided with anti-slip lines 21 on the shaft section between the two bearing seats 19, and one end of the brake lever 22 is fixed to the first The hinge ear 23 on the support frame 2 is hinged, and the other end is connected with the first support frame 2 through a locking screw 25. The upper surface of the middle part of the brake lever 22 is provided with a brake pad 24, and the locking screw 25 is screwed into and locked. After being in place, the brake pads 24 press against the anti-slip grooves 21 so that the central shaft 18 is locked and positioned.

It should be noted that the brake positioning mechanism is not limited to the above-mentioned form where one end of the brake lever is hinged, and the other end adjusts the pressing force between the brake pad and the anti-skid pattern through a locking screw, and other methods can also be used, such as adjusting by bolts The top-tightened brake pad and the brake lever move up along the chute limit structure to compress the anti-skid pattern.

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

It should be noted that the three-jaw self-centering chuck is a commercially available product. When the rotating part in the square hole on the side of the rotation drives the inner tooth plate of the chuck to rotate, the three jaws move away from or approach the center of the chuck synchronously. Therefore, when the three jaws When the jaws clamp the inner diameter of the opening of the target (stuffing box jacket), the center of the opening of the target coincides with the center of the chuck and the central axis of the center slide rod, realizing self-centering alignment.

In one embodiment of the present invention, the upper and lower ends of the marking sleeve 9 abut against a limit ring, and the limit ring is locked and fixed on the central sliding rod 7, and the marking rod 10 extends horizontally.

It should be noted that the scribe sleeve cannot move axially relative to the center slide bar, but can only rotate 360 degrees relative to the center slide bar in the circumferential direction, so as to realize the rotation of the scribe needle around the central axis of the center slide bar. Precise line work.

In one embodiment of the present invention, as shown in Fig. 13 and Fig. 14, the lifting and positioning mechanism includes a plurality of guide plates 38 fixedly arranged on the first support frame 2 at intervals up and down, and the center sliding rod 7 The outer wall is provided with a flat key 39 extending in the axial direction, and the guide plate 38 is provided with a through hole slidingly matched with the central sliding rod 7 and the flat key 39, and the upper end surface of the central sliding rod 7 is fixed with a The suspension ring 40 is connected with the two-way self-locking hand winch 43 fixed on the first support frame 2 after passing around several pulleys 42 through the wire rope 41 . The main parameters of the two-way self-locking hand winch used in the present invention are as follows: model 1800LB, rated lifting capacity 300kg, wire rope diameter 5mm, reliable two-way ratchet self-locking function, handle operating force 19kg under full load.

It should be noted that, compared with the structure in which the lifting and positioning of the center sliding rod is realized by the guide rail and the brake positioning mechanism, in this embodiment, a flat key is set on the center sliding rod, and the guide plate is used to limit the guidance, and at the same time, it is connected by a wire rope. The two-way self-locking hand winch also realizes the lifting and positioning of the center sliding rod. The structure is relatively simpler and can effectively save costs.

In one embodiment of the present invention, the upper surface of the working platform 1 is marked with a cross center line 26, and the center axis of the center slide bar 7 is aligned with the intersection point of the center line 26 in the vertical direction, The working platform 1 is also provided with a plurality of sets of positioning parts 27 evenly spaced in the circumferential direction with the intersection point of the center line 26 as the center of the circle. There are a plurality of positioning holes with gradually increasing distances between points, and one positioning fixture 5 is connected to each set of positioning parts 27 .

It can be understood that the multiple positioning holes set on each set of positioning parts are set according to the bottom plate diameters of the outlet elbows of multiple specifications that need to be assembled and produced in the factory, so as to ensure that each positioning fixture is installed at the corresponding positioning hole. Finally, it can better clamp and position the bottom plate of the outlet elbow of the corresponding specification. Figure 1, Figure 2 and Figure 13 and other accompanying drawings are provided with marking lines or positioning pads for aligning with the center line on the workbench on the left and right side panels and rear side panels at the bottom of the first support frame. As shown in Figure 13, there are three positioning pads, which are respectively located at the bottom of the left and right sides of the bottom of the first support frame and the bottom of the rear side plate (the three positioning pads are distributed in a triangular shape), and the side edges of the positioning pads and the center Line alignment, so as to ensure that the intersection point of the center axis of the center slide bar and the center line is aligned in the vertical direction. Similarly, the base of the second support frame is also provided with marking lines or positioning pads for aligning with the center line on the workbench.

In one embodiment of the present invention, the lifting and positioning mechanism includes a lifting frame and a lifting drive device, the lifting frame is set in the second support frame 13, and the lifting drive device is set in the second support frame 13 or on the working platform 1 and drives the lifting frame to rise or fall in the vertical direction from the bottom of the lifting frame. Two vertical pillars 29, the top ends of the two pillars 29 are fixedly connected by a transverse link, and the elevating frame moves up and down along the pillars 29. The base can be welded and fixed by a plurality of square steel pipes. In order to ensure stability, reinforcing ribs can be set at necessary positions.

It should be noted that the limit mechanism on the lifting frame can ensure that the attitude of the water outlet flange on the lifting frame remains unchanged, that is, it remains in a vertical state, and it will neither shake back and forth during the lifting process nor overturn it. Circumferential rotation occurs.

In one embodiment of the present invention, the lifting frame includes a vertical backboard 30 and two crossbars 31 fixed on the upper and lower parts of the rear side of the backboard 30, and the crossbars 31 are located between the two pillars 29. Between, the backboard 30 is located on the outside of the front side of the two pillars 29, and the limit mechanism includes a positioning waist-shaped hole 32 opened on the upper part of the backboard 30 and a hole fixed on the lower part of the front side of the backboard 30. The supporting plate 33 is provided with two positioning screw holes 34, and the lower side of the water outlet flange 14 is pressed against the upper edge of the supporting plate 33 and is threadedly connected to the bolts of the positioning screw holes 34 The back side of the lower side of the flange is pressed and fitted with the front side of the back plate 30, and the bolts passing through the positioning waist-shaped hole 32 and the front and rear relative splints make the back side of the water outlet flange 14 upper side and the back side of the back plate 30 The front side of the backboard 30 is press-fitted. The upper part of the supporting plate 14 is provided with an inverted trapezoidal groove for the lower edge of the outlet flange 8 to be inserted.

It should be noted that the splint and the bolt, but those skilled in the art should be able to understand according to the above description, such as the bolt that is threadedly connected to the positioning screw hole on the lower side of the flange, when it is tightened, the other end can pass through the backing plate (bolt) A corner that passes through the backing plate) extends upwards and is pressed against the front side of the lower side of the water outlet flange.

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

It should be noted that the lifting drive device is used to lift the lifting frame relative to the support. It is not necessarily a jack. It can also be a motor, a twisting wheel, a pulley and a fixed pulley in the form of cooperation to drive the lift by retracting the pulley. .

In one embodiment of the present invention, the two ends of the cross bar abut against the inner surfaces of the two uprights, the front and rear sides of the uprights are fixed with limiting plates 37, and the cross bar is fixed between the two limiting plates 16 Move up and down in the limit groove formed.

It can be understood that in order to prevent the lifting frame from shaking back and forth or overturning, the limit plate can realize the above function in response to its limit, but it does not have to be realized by the limit plate, and it can also be set on the sides of the two pillars facing each other. The chute is used for the two ends of the cross bar to extend into the chute, and the two ends of the cross bar can move up and down in the chute, and the cross bar has no degree of freedom in the front and rear direction relative to the chute.

In one embodiment of the present invention, the upper part of the positioning jig 5 has a support plate 35 and the top outer side of the support plate 35 is fixed with a tightening nut 36, the central axis of the tightening nut 36 is along the horizontal direction and the tightening nut 36 is The nut 36 is threadedly connected with a tightening bolt, which can compress the outer edge end surface of the bottom plate 4 when the tightening bolt is tightened.

The method of using the pump outlet elbow welding and scribing complete set provided by the present invention is briefly described as follows:

Place the first support frame on the working platform, and carry out alignment and positioning so that the central axis of the center slide bar is aligned with the intersection point of the centerline on the working platform, and the elbow body that has been preliminarily assembled with the water inlet flange and the bottom plate is placed In the area surrounded by each positioning fixture of the working platform, and then screw the jacking bolts, the number of screwing in of the jacking bolts on each positioning fixture is basically the same, so that not only the bottom plate is clamped but also the bottom plate and the water inlet flange are clamped. The center is aligned with the intersection of the centerline drawn on the working platform in the vertical direction. Then use the liftable marking needle on the first support frame to mark the opening line of the filler part on the elbow body (in advance, adjust the guide rail to a suitable height according to the specifications of the elbow body and lock it with the brake pad, and then turn it Scribing rod and scribing sleeve for scribing), after the opening line is marked, cut. Then use the self-centering three-jaw chuck at the lower end of the center slide bar to clamp the stuffing box jacket, insert it into the hole cut above, adjust the height and draw the intersecting line, then cut, and assemble and weld after completion. Finally, the water outlet flange is placed on the water outlet of the elbow body with the second support frame, and after the lifting adjustment and alignment, welding and assembly are carried out.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. A complete set of equipment for welding and scribing of outlet elbows for pumps, characterized in that it includes a working platform (1), a first installation assembly for scribing of packing parts and placing and welding of stuffing box jackets, and a water outlet flange ( 14) Place the welded second installation assembly, the first installation assembly includes the first support frame (2) arranged on the working platform (1) and the circle for aligning the elbow body (3) A plurality of positioning fixtures (5) clamped and positioned around the bottom plate (4), the middle of the top of the first support frame (2) is provided with a lifting and positioning mechanism, and the lifting and positioning mechanism includes a lifting and positioning mechanism that can be lifted in the vertical direction and Positioned center slide bar (7), the lower end of the center slide bar (7) is fixed with a chuck (8) for clamping the outer casing of the stuffing box, and the center slide bar (7) is rotatably connected with a scoring sleeve (9) , the marking sleeve (9) is connected with one end of the marking rod (10) extending outwards, the marking rod (10) is provided with a plurality of marking holes (11) at intervals, and the marking needle (12 ) is inserted into the scribe hole (11) and can move up and down in the vertical direction relative to the scribe hole (11), and the second installation component includes a first Two supporting frames (13), the second supporting frame (13) is provided with a lifting and positioning mechanism for placing the water outlet flange (14). 2. A complete set of welding and scribing devices for pump outlet elbows according to claim 1, characterized in that the lifting and positioning mechanism includes a guide rail (6), and the lower end of the guide rail (6) is connected to the center sliding rod ( 7) The upper end is fixed, the guide rail (6) is a circular guide rail, and a plurality of sliders (15) slidingly matched with the circular guide rail are fixed on the first support frame (2) at intervals up and down, the A rack (16) is fixed on the mounting surface of the circular guide rail, and the gear (17) meshing with the rack (16) passes through the central shaft (18) and the bearing seat fixed on the first support frame (2). (19) connection, one end of the central shaft (18) is fixed with an adjustment handwheel (20), and the first support frame (2) is also provided with a brake positioning mechanism, and the rotation of the adjustment handwheel (20) makes After the guide rail (6) moves up or down for a certain distance, the guide rail (6) can be positioned by the brake positioning mechanism. 3. A complete set of equipment for welding and scribing a water outlet elbow for a pump according to claim 2, characterized in that the brake positioning mechanism includes a brake lever (22), and the bearing seat (19) has two and The central shaft (18) runs through the two bearing seats (19) and is interference fit with the inner ring of the bearing in the bearing seat (19), and the central shaft (18) is located between the two bearing seats. Anti-slip lines (21) are provided on the shaft section between the seats (19), and one end of the brake lever (22) is hinged to the hinge ear (23) fixed on the first support frame (2). One end is connected to the first support frame (2) through a locking screw (25), the upper surface of the middle part of the brake lever (22) is provided with a brake pad (24), and the locking screw (25) is screwed in and locked in place Finally, the brake pads (24) press against the anti-skid lines (21) so that the central shaft (18) is locked and positioned. 4. A complete set of equipment for welding and scribing a water outlet elbow for a pump according to claim 1, characterized in that the lifting and positioning mechanism includes a plurality of blocks fixedly arranged on the first support frame (2) at intervals up and down. The guide plate (38), the outer wall of the center slide rod (7) is provided with a flat key (39) extending in the axial direction, and the guide plate (38) is provided with a key (39) sliding fit through hole, the upper end surface of the center slide bar (7) is fixed with a suspension ring (40), and the suspension ring (40) is fixed with a number of pulleys (42) by a wire rope (41) It is connected with the two-way self-locking hand winch (43) on the first support frame (2). 5. A pump outlet elbow welding and marking complete set according to claim 1, characterized in that the chuck (8) is a three-jaw self-centering chuck, and the marking sleeve (9) The upper and lower ends of each abut against a limit ring, the limit ring is locked and fixed on the central sliding rod (7), and the marking rod (10) extends along the horizontal direction. 6. A complete set of welding and scribing devices for outlet elbows for pumps according to claim 1, characterized in that, the upper surface of the working platform (1) is depicted with a cross center line (26), and the center slide The central axis of the rod (7) is aligned with the intersection point of the center line (26) in the vertical direction, and the work platform (1) is also provided with a center line with the intersection point of the center line (26) A plurality of sets of positioning portions (27) arranged at uniform intervals in the circumferential direction, each set of positioning portions (27) includes a plurality of positioning holes whose distance from the intersection point of the central line (26) in the radial direction gradually increases, each set of positioning holes One positioning fixture (5) is connected to each of the positioning parts (27). 7. A complete set of welding and scribing devices for pump outlet elbows according to claim 1, characterized in that the lifting and positioning mechanism includes a lifting frame and a lifting drive device, and the lifting frame is set on the second support frame (13), the lifting drive device is arranged on the second support frame (13) or on the working platform (1) and drives the lifting frame from the bottom of the lifting frame to rise in the vertical direction or Descending, the second support frame (13) includes a base (28) and two vertical pillars (29) fixed on the left and right sides of the base (28), and the tops of the two pillars (29) pass through the transverse connecting rod Fixedly connected, the lifting frame lifts along the pillar (29). 8. A complete set of welding and scribing devices for pump outlet elbows according to claim 7, characterized in that the lifting frame includes a vertical back plate (30) and is fixed behind the back plate (30). Two crossbars (31) on the upper and lower parts of the side, the crossbars (31) are located between the two pillars (29), and the backboard (30) is located outside the front side of the two pillars (29). The position-limiting mechanism includes a positioning waist-shaped hole (32) on the top of the backboard (30) and a supporting plate (33) fixed on the lower part of the front side of the backboard (30). The supporting plate (33) There are two positioning screw holes (34), the lower side of the water outlet flange (14) is pressed against the upper edge of the supporting plate (33) and the bolts threaded to the positioning screw holes (34) make the The back side of the lower side of the flange is pressed and fitted to the front side of the back plate (30), and the bolts passing through the positioning waist hole (32) and the splints oppositely arranged front and back make the water outlet flange (14) The back side of the side is pressed and fitted with the front side of the backboard (30). 9. A complete set of equipment for welding and scribing lines for pump outlet elbows according to claim 8, characterized in that the lifting drive device is a jack, and the jack is placed on the base (28) and the telescopic end is connected to the The cross bar (31) at the lower part of the lifting frame is tightened. 10. A pump outlet elbow welding and scribing complete set according to any one of claims 1 to 9, characterized in that, the upper part of the positioning fixture (5) has a supporting plate (35) and the supporting plate ( 35) The upper part of the outer side is fixed with a jacking nut (36), the central axis of the jacking nut (36) is along the horizontal direction and the jacking nut (36) is threaded with a jacking bolt, and the jacking bolt is tightened Can compress the outer edge end face of described base plate (4) during.

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