Temporary welding jig for electromagnetic water meter body and connecting pipe

Abstract

The utility model relates to a welding jig, in particular to a temporary welding jig for an electromagnetic water meter body and a connecting pipe. Comprising a workbench, a base is fixedly arranged on the upper side wall of the workbench, and a center positioning column is fixedly arranged in the center of the upper side wall of the base. According to the electromagnetic water meter, after the central positioning column is inserted into the electromagnetic water meter body, the two shells in the closed state are sleeved and locked on the outer side of the electromagnetic water meter body, and then the two flange positioning pins penetrate through the two mounting holes from top to bottom and are inserted into the corresponding positioning holes; therefore, displacement of the flange plate and the connecting pipe in the horizontal direction is limited, the concentricity of the connecting pipe and the preset welding position on the electromagnetic water meter body in the welding process is guaranteed, the positions of the connecting pipe and the electromagnetic water meter body are fixed, and an operator can conveniently weld the inner side of the joint of the connecting pipe and the electromagnetic water meter body; and the welding quality of the connecting pipe on the electromagnetic water meter body is ensured.

Description

Technical Field

[0001] This utility model relates to a welding fixture, specifically, to a temporary welding fixture for the electromagnetic water meter body and the connecting pipe. Background Technology

[0002] An electromagnetic water meter is a water meter that uses the principle of electromagnetic induction to measure water flow and water consumption. An existing electromagnetic water meter consists of an electromagnetic water meter body 4, a meter head device 41, a connecting pipe 42, and a flange 43. The connecting pipe 42 and the flange 43 are welded and fixed as a combination. When producing this type of electromagnetic water meter, the two connecting pipes 42 need to be welded and fixed to the opposite sides of the electromagnetic water meter body 4.

[0003] For small-diameter electromagnetic water meters, which are relatively lightweight and easy to rotate, rotational welding is performed on the outside of the joint between the electromagnetic water meter body 4 and the connecting pipe 42. However, for large-diameter electromagnetic water meters, which are heavier and not easy to rotate, welding is performed on the inside of the joint between the electromagnetic water meter body 4 and the connecting pipe 42. For the inside welding, the electromagnetic water meter body 4 does not need to be rotated; the operator can simply move the welding torch.

[0004] Since the connecting pipe 42 and the electromagnetic water meter body 4 cannot be fixed by pressing down during internal welding, it is necessary to design a welding fixture that can fix the connecting pipe 42 and the electromagnetic water meter body 4 from the outside, and also meet the requirement that the welding fixture can ensure the concentricity of the connecting pipe 42 and the electromagnetic water meter body 4. Utility Model Content

[0005] The purpose of this invention is to provide a temporary welding fixture for the electromagnetic water meter body and the connecting pipe, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, one objective of this utility model is to provide a temporary welding fixture for an electromagnetic water meter body and a connecting pipe, including a workbench. A base is fixedly mounted on the upper side wall of the workbench, and a central positioning post is fixedly mounted at the center of the upper side wall of the base. The electromagnetic water meter body is mounted on the upper side of the base, and the upper end of the central positioning post is located inside the electromagnetic water meter body. A fixture body is mounted on the upper side of the base. The fixture body includes two identical outer shells, one side of which is hinged to each other. When the side walls of the two outer shells are fitted together, the sides that are close to each other are provided with a body fixing groove that penetrates the top and bottom of the outer shells. When the two outer shells are closed, the two body fixing grooves form a vertically arranged cylindrical cavity. The electromagnetic water meter body is located inside the vertical cylindrical cavity. A locking mechanism is provided on the two outer shells in the closed state at a position away from the hinge point of the two outer shells. The locking mechanism is used to fix the state of the two outer shells that are closed together. A positioning component is provided on the upper side of each of the two outer shells. When the flange and the connecting pipe are mounted on the upper side of the electromagnetic water meter body, the positioning component is used to fix the position of the flange on the upper side of the electromagnetic water meter body.

[0007] As a further improvement to this technical solution, a meter head fixing ring is fixedly provided on the side of the outer shell away from the hinge of the other outer shell. When the two outer shells are closed, the two meter head fixing rings form a horizontally arranged circular tube, and the meter head device is located inside the horizontally arranged circular tube.

[0008] As a further improvement to this technical solution, the locking mechanism includes two perforated plates symmetrically fixed on one side of the two outer shells away from the hinge and close to each other. The perforated plates are provided with threaded holes. One of the outer shells is threaded with a bolt near the top. When the two outer shells are closed, the two perforated plates at the same height contact each other, and the axis of the threaded holes on the two perforated plates at the same height is on the same straight line. The bolt is threadedly connected to the two threaded holes located above.

[0009] As a further improvement to this technical solution, the positioning component includes a positioning hole opened on the top of the housing, and a flange positioning pin is inserted into the inside of the positioning hole. Several mounting holes are arranged in a ring array near the edge of the flange. When the flange and the connecting pipe are set on the upper side of the electromagnetic water meter body, the flange positioning pin is inserted into one of the mounting holes on the flange.

[0010] As a further improvement to this technical solution, the locking mechanism includes a latch plate rotatably mounted on one of the housings. The latch plate is located above the head fixing ring. A locking groove is provided on one side of the latch plate away from the hinge position with the housing. A locking pin is fixed on one side of the other housing. When the two housings are closed, the locking pin is located inside the locking groove.

[0011] As a further improvement to this technical solution, the locking mechanism also includes a baffle that is slidably disposed inside the lock groove near the bottom. When the lock pin is inside the lock groove, the baffle contacts the bottom of the lock pin. The latch plate has a movable groove inside. One end of the baffle passes through one side of the lock groove and extends into the movable groove. Two springs are fixedly disposed between the end of the baffle inside the movable groove and the inner wall of the movable groove. The springs drive the baffle away from the movable groove.

[0012] As a further improvement to this technical solution, the locking mechanism also includes a through groove on the side of the latch plate away from the outer casing. The through groove is connected to the movable groove, and a movable block is slidably disposed inside the through groove. The movable block is fixed to one end of the baffle located inside the movable groove.

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

[0014] The temporary welding fixture for the electromagnetic water meter body and connecting pipe involves inserting the central positioning pin into the electromagnetic water meter body, then fitting and locking the two closed outer shells onto the outside of the electromagnetic water meter body. Two flange positioning pins are then inserted from top to bottom through the two mounting holes and into the corresponding positioning holes. This restricts horizontal displacement of the flange and connecting pipe, ensuring the concentricity of the connecting pipe with the predetermined welding position on the electromagnetic water meter body during welding. This fixes the position of the connecting pipe and the electromagnetic water meter body, facilitating welding on the inside of the joint between the connecting pipe and the electromagnetic water meter body, and ensuring the quality of the welding of the connecting pipe to the electromagnetic water meter body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention in Embodiment 1;

[0016] Figure 2 This is a cross-sectional view of the overall structure of the present invention in Embodiment 1;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention in Embodiment 1;

[0018] Figure 4 This is one of the structural schematic diagrams of the main body of the fixture of this utility model in Embodiment 1;

[0019] Figure 5 This is a schematic diagram of the electromagnetic water meter body in Example 1;

[0020] Figure 6 This is a schematic diagram of the structure after the connecting pipe and flange are combined in Example 1;

[0021] Figure 7 This is the second schematic diagram of the main body of the fixture of this utility model in Embodiment 1;

[0022] Figure 8 This is a schematic diagram of the main body of the fixture of this utility model after it has been opened in Embodiment 1;

[0023] Figure 9 This is a schematic diagram of the main body of the fixture of this utility model in Embodiment 2;

[0024] Figure 10 This is a schematic diagram of the locking mechanism of the present invention in Embodiment 2;

[0025] Figure 11 This is a cross-sectional view of the locking mechanism of the present invention in Embodiment 2.

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Workbench;

[0028] 2. Base; 21. Central positioning post;

[0029] 3. Fixture body; 31. Outer shell; 32. Body fixing groove; 33. Head fixing ring; 35. Positioning hole; 36. Locking mechanism; 361. Latch plate; 362. Lock groove; 363. Baffle; 364. Movable groove; 365. Through groove; 366. Spring; 367. Moving block; 37. Locking pin; 38. Hole plate; 39. Bolt;

[0030] 4. Electromagnetic water meter body; 41. Meter head device; 42. Connecting pipe; 43. Flange;

[0031] 5. Flange locating pin. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] Please see Figures 1-8As shown, one of the objectives of this embodiment is to provide a temporary welding fixture for the electromagnetic water meter body and the connecting pipe, including a workbench 1. A base 2 is fixedly installed on the upper side wall of the workbench 1. A central positioning post 21 is fixedly installed at the center of the upper side wall of the base 2. The electromagnetic water meter body 4 is installed on the upper side of the base 2. The upper and lower side walls of the electromagnetic water meter body 4 are provided with channels corresponding to the central positioning post 21. After the operator places the electromagnetic water meter body 4 on the upper side of the base 2, the upper end of the central positioning post 21 is located inside the channel on the electromagnetic water meter body 4. At this time, the central positioning post 21 restricts the horizontal movement of the electromagnetic water meter body 4, thereby ensuring the stability of the electromagnetic water meter body 4 when welding the connecting pipe 42. The electromagnetic water meter body 4 can rotate around the central positioning post 21 to facilitate the operator to rotate and adjust the position of the electromagnetic water meter body 4, and to weld different positions at the joint between the electromagnetic water meter body 4 and the connecting pipe 42, so as to improve the efficiency of the operator in welding the connecting pipe 42.

[0035] To facilitate the operator in pre-fixing the connecting pipe 42 to the welding point on the upper side of the electromagnetic water meter body 4, a fixture body 3 is provided on the upper side of the base 2. The fixture body 3 includes two identical outer shells 31, with one side of the two outer shells 31 hinged together. When the side walls of the two outer shells 31 are fitted together, the sides that are close to each other are provided with a body fixing groove 32 that passes through the top and bottom of the outer shell 31. When the two outer shells 31 are closed, the two body fixing grooves 32 form a vertically arranged cylindrical cavity. The vertical cylindrical cavity has the same shape as the electromagnetic water meter body 4. In use, the electromagnetic water meter body 4 is located inside the vertical cylindrical cavity, making the vertical... The cylindrical cavity fixes the position of the electromagnetic water meter body 4. Simultaneously, a meter head fixing ring 33 is fixedly installed on the side of the outer shell 31 away from the hinge joint of the other outer shell 31. When the two outer shells 31 are closed, the two meter head fixing rings 33 form a horizontally arranged circular tube. The meter head device 41 is located inside the horizontally arranged circular tube, which clamps and positions the meter head device 41. Furthermore, a locking mechanism 36 is installed on the two outer shells 31 in the closed state, away from the hinge joint. The locking mechanism 36 is used to fix the state of the two closed outer shells 31. The structure of the locking mechanism 36 is detailed below, referring to... Figure 8The locking mechanism 36 includes two perforated plates 38 symmetrically fixed on the side of the two outer shells 31 away from the hinge and close to each other. The perforated plates 38 have threaded holes. A bolt 39 is threadedly connected to one of the outer shells 31 near its top. When the two outer shells 31 are closed, the two perforated plates 38 at the same height contact each other, and the axes of the threaded holes on the two perforated plates 38 at the same height are on the same straight line. At this time, the operator uses a screwdriver or wrench to tighten the bolt 39, making the bolt 39 threadedly connected to the two upper threaded holes. The bolt 39 then restricts the two perforated plates 38 from moving away from each other, thereby locking the two outer shells 31 in a closed state. This allows the two body fixing grooves 32 to position the electromagnetic water meter body 4, and the two meter head fixing rings 33 to position the meter head device 41. Furthermore, the two outer shells 31 are fixed to the outside of the electromagnetic water meter body 4, positioning the electromagnetic water meter body 4 in the fixture. Inside the main body 3, the operator places the assembly consisting of the connecting pipe 42 and the flange 43 on the upper side of the two outer shells 31. After inserting the lower end of the connecting pipe 42 into the vertical cylindrical cavity formed by the two main body fixing grooves 32, the lower end of the connecting pipe 42 contacts the predetermined welding position on the upper side of the electromagnetic water meter body 4. At this time, the flange 43 contacts the upper side of the outer shell 31, and the connecting pipe 42 and the channel on the electromagnetic water meter body 4 are connected. Positioning components are provided on the upper side of both outer shells 31. When the flange 43 and the connecting pipe 42 are placed on the upper side of the electromagnetic water meter body 4, the positioning components fix the position of the flange 43 on the upper side of the electromagnetic water meter body 4, thereby limiting the change of position of the connecting pipe 42. This ensures that the connecting pipe 42 is always precisely aligned with the predetermined welding position on the upper side of the electromagnetic water meter body 4 during the welding process, thereby ensuring the welding quality of the connecting pipe 42.

[0036] The structure of the positioning component is detailed below, refer to Figure 6 and Figure 7 The positioning component includes a positioning hole 35 on the top of the outer casing 31. A flange positioning pin 5 is inserted into the positioning hole 35. When the positioning component is idle, the flange positioning pin 5 is separated from the outer casing 31. Several mounting holes are arranged in a ring array near the edge of the flange 43. When the flange 43 contacts the upper side of the outer casing 31, the operator rotates and adjusts the position of the flange 43 so that two of the mounting holes on the flange 43 correspond to the two positioning holes 35 respectively. Then, the operator inserts two flange positioning pins 5 from top to bottom through the two mounting holes and into the corresponding positioning holes 35, so that the flange positioning pins 5 are inserted into the mounting holes. At this time, the positioning hole 35 restricts the horizontal movement of the flange positioning pin 5. The flange positioning pin 5 and the mounting hole cooperate to restrict the horizontal movement of the flange 43 and the connecting pipe 42, thereby ensuring the concentricity of the connecting pipe 42 with the predetermined welding position on the electromagnetic water meter body 4 during the welding process, thereby ensuring the quality of the operator welding the connecting pipe 42 onto the electromagnetic water meter body 4.

[0037] Example 2

[0038] This embodiment is an adjustment based on Embodiment 1, reducing the difficulty of connecting the two outer shells 31 together. However, the threaded holes on the perforated plate 38 are prone to stripping after repeated tightening of the bolts 39. Therefore, another locking mechanism 36 is proposed to fix the two outer shells 31, as described in the following figure. Figures 9-11 The locking mechanism 36 includes a latch plate 361 rotatably mounted on one of the housings 31. The latch plate 361 is located above the meter head fixing ring 33. A locking groove 362 is provided on one side of the latch plate 361 away from the position where it is hinged to the housing 31. A locking pin 37 is fixed on one side of the other housing 31. When the two housings 31 are closed, the operator rotates the latch plate 361 toward the axis of the meter head fixing ring 33 until the locking groove 362 is rotated to the outside of the locking pin 37, so that the locking pin 37 is located inside the locking groove 362. At this time, the latch plate 361 is rotated to a horizontal state. At this time, the locking groove 362 and the locking pin 37 cooperate to restrict the opening of the two housings 31, thereby fixing the housings 31 to the outside of the electromagnetic water meter body 4.

[0039] The locking mechanism 36 also includes a baffle 363 slidably disposed inside the lock groove 362 near the bottom end. A movable groove 364 is formed inside the latch plate 361. One end of the baffle 363 passes through one side of the lock groove 362 and extends into the movable groove 364. Two springs 366 are fixedly disposed between the end of the baffle 363 inside the movable groove 364 and the inner wall of the movable groove 364. The springs 366 drive the baffle 363 away from the movable groove 364. The locking mechanism 36 also includes a through groove 365 formed on the side of the latch plate 361 away from the outer casing 31. The through groove 365 communicates with the movable groove 364. A movable block 367 is slidably disposed inside the through groove 365. The movable block 367 is fixed to the baffle 363 located inside the movable groove 364. At one end, when the operator rotates the latch plate 361, the moving block 367 is pushed away from the locking groove 362, causing the moving block 367 to drive the baffle 363 into the interior of the movable groove 364, causing the two springs 366 to contract elastically in sync until the baffle 363 moves out of the interior of the locking groove 362. After the locking pin 37 enters the interior of the locking groove 362, the operator releases the moving block 367, causing the spring 366 to rebound and push the baffle 363 into the interior of the locking groove 362. At this time, the baffle 363 contacts the bottom of the locking pin 37, and the baffle 363 prevents the locking pin 37 from moving out of the interior of the locking groove 362, thereby restricting the rotation of the latch plate 361 and ensuring the locking effect of the locking groove 362 and the locking pin 37 on the two outer shells 31 in the closed state.

[0040] After the operator welds a connecting pipe 42 to one side of the electromagnetic water meter body 4, the operator needs to open the two outer shells 31, remove the electromagnetic water meter body 4 from the two outer shells 31, and then turn the electromagnetic water meter body 4 upside down to weld another connecting pipe 42 to the other end of the electromagnetic water meter body 4. The welding steps are the same as above. In this embodiment, when it is necessary to open the two outer shells 31, the operator pushes the moving block 367 away from the locking groove 362, so that the moving block 367 drives the baffle 363 into the interior of the movable groove 364. Then, the latch plate 361 is rotated upward, so that the locking groove 362 moves out from the outside of the locking pin 37, thereby releasing the locking mechanism 36 from the two outer shells 31, allowing the operator to open the two outer shells 31 to remove the electromagnetic water meter body 4. Then, another connecting pipe 42 is welded to the other side of the electromagnetic water meter body 4 to complete the connection between the electromagnetic water meter body 4 and the connecting pipe 42.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temporary welding fixture for an electromagnetic water meter body and a connecting pipe, comprising a workbench (1), wherein a base (2) is fixedly disposed on the upper side wall of the workbench (1), characterized in that: A central positioning post (21) is fixedly installed at the center of the upper side wall of the base (2). The electromagnetic water meter body (4) is installed on the upper side of the base (2). The upper end of the central positioning post (21) is installed inside the electromagnetic water meter body (4). A fixture body (3) is installed on the upper side of the base (2). The fixture body (3) includes two identical outer shells (31). One side of the two outer shells (31) is hinged to each other. When the side walls of the two outer shells (31) are fitted together, the side that is close to each other is provided with a body fixing groove (32) that passes through the top and bottom of the outer shell (31). When the two outer shells (31) are closed, the two... The main body fixing groove (32) forms a vertically arranged cylindrical cavity. The electromagnetic water meter body (4) is located inside the vertical cylindrical cavity. Locking mechanisms (36) are provided on the two shells (31) in the closed state, away from the hinge of the two shells (31). The locking mechanism (36) is used to fix the state of the two shells (31) that are closed together. Positioning components are provided on the upper side of the two shells (31). When the flange (43) and the connecting pipe (42) are set on the upper side of the electromagnetic water meter body (4), the positioning components are used to fix the position of the flange (43) on the upper side of the electromagnetic water meter body (4).

2. The temporary welding fixture for the electromagnetic water meter body and the connecting pipe according to claim 1, characterized in that: A meter head fixing ring (33) is fixedly provided on the side of the outer shell (31) that is hinged away from the other outer shell (31). When the two outer shells (31) are closed, the two meter head fixing rings (33) form a horizontally arranged circular tube, and the meter head device (41) is located inside the horizontally arranged circular tube.

3. The temporary welding fixture for the electromagnetic water meter body and the connecting pipe according to claim 1, characterized in that: The locking mechanism (36) includes two perforated plates (38) symmetrically fixed on one side of the two outer shells (31) away from the hinge and close to each other. The perforated plates (38) are provided with threaded holes. One of the outer shells (31) is threaded with a bolt (39) near the top. When the two outer shells (31) are closed, the two perforated plates (38) at the same height are in contact with each other, and the axis of the threaded holes on the two perforated plates (38) at the same height is on the same straight line. The bolt (39) is threadedly connected to the two threaded holes located above.

4. The temporary welding fixture for the electromagnetic water meter body and the connecting pipe according to claim 1, characterized in that: The positioning component includes a positioning hole (35) on the top of the housing (31), and a flange positioning pin (5) is inserted into the positioning hole (35). Several mounting holes are arranged in a ring array near the edge of the flange (43). When the flange (43) and the connecting pipe (42) are set on the upper side of the electromagnetic water meter body (4), the flange positioning pin (5) is inserted into one of the mounting holes on the flange (43).

5. The temporary welding fixture for the electromagnetic water meter body and the connecting pipe according to claim 1, characterized in that: The locking mechanism (36) includes a latch plate (361) rotatably mounted on one of the housings (31), the latch plate (361) being located above the head fixing ring (33), a locking groove (362) being provided on one side of the latch plate (361) away from the hinge position with the housing (31), and a locking pin (37) being fixed on one side of the other housing (31), the locking pin (37) being located inside the locking groove (362) when the two housings (31) are closed.

6. The temporary welding fixture for the electromagnetic water meter body and the connecting pipe according to claim 5, characterized in that: The locking mechanism (36) further includes a baffle (363) slidably disposed inside the lock groove (362) near the bottom. When the lock pin (37) is located inside the lock groove (362), the baffle (363) contacts the bottom of the lock pin (37). The latch plate (361) has a movable groove (364) inside. One end of the baffle (363) passes through one side of the lock groove (362) and extends into the movable groove (364). Two springs (366) are fixedly disposed between the end of the baffle (363) inside the movable groove (364) and the inner wall of the movable groove (364). The springs (366) drive the baffle (363) away from the movable groove (364).

7. The temporary welding fixture for the electromagnetic water meter body and the connecting pipe according to claim 6, characterized in that: The locking mechanism (36) further includes a through groove (365) on the side of the latch plate (361) away from the outer casing (31). The through groove (365) is connected to the movable groove (364). A movable block (367) is slidably disposed inside the through groove (365). The movable block (367) is fixed to one end of the baffle (363) located inside the movable groove (364).

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