Flowmeter dismounting tool

Abstract

The utility model discloses a flowmeter dismounting and mounting tool, it includes support leg, vertical fixed in the support leg's stand, set in the lift mechanism of stand, main hoist mechanism and auxiliary hoist mechanism, and the moving direction of lift mechanism lifting end is parallel to the height direction of stand, main hoist mechanism includes the main hoist arm of slip setting in the stand and the hoisting spare of rotation setting in the main hoist arm, and the main hoist arm is fixed in the lifting end of lift mechanism, and hoisting spare is used for hoisting the two end of flowmeter, auxiliary hoist mechanism includes the auxiliary hoist arm of vertical setting in the stand, the capstan of fixed in the stand, the lifting rope of winding in the capstan and at least two fixed pulleys, and at least two fixed pulleys are arranged along its length direction and set up in the auxiliary hoist arm, and the lifting rope passes at least two fixed pulleys simultaneously, and the one end of hoist arm away from the stand is provided with lifting hook, the length of auxiliary hoist arm is greater than the main hoist arm, the utility model discloses can more efficient and safely to flowmeter carry out dismounting and mounting.

Description

Technical Field

[0001] This utility model relates to the technical field of flow meter disassembly and assembly, and in particular to a flow meter disassembly and assembly tool. Background Technology

[0002] U-type flow meters are a type of direct mass flow meter. Their operation is based on the Coriolis effect in fluid mechanics. They are commonly used in the chemical industry, water treatment, environmental protection and power industry, as well as the food and beverage industry, and have a wide range of applications.

[0003] After use, the U-type flow meter needs to be disassembled and reassembled. The disassembly and reassembly include the following steps: close the inlet and outlet valves before and after the flow meter to isolate the flow meter from the operating system; then depressurize, and then open the drain port or vent plug of the flow meter itself to safely discharge the medium remaining in the flow meter into the designated container; then refill the flow meter with neutral cleaning fluid or inert gas for cleaning and pour it out again until it is confirmed that there is no residue.

[0004] Because the flow meters used in factory workshops are large and heavy, they are very troublesome to pour out and clean. In addition, since the liquid in the flow meters may be corrosive, special attention must be paid to safety, which makes it impossible to guarantee both the efficiency and safety of disassembly and assembly. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a flow meter disassembly and assembly tool that can disassemble and assemble the flow meter more efficiently and safely.

[0006] To solve the above-mentioned technical problems, the flow meter disassembly and assembly tooling provided by this utility model adopts the following technical solution: A flow meter assembly / disassembly fixture includes a support leg, a column vertically fixed to the support leg, a lifting mechanism mounted on the column, a main lifting mechanism, and an auxiliary lifting mechanism. The lifting mechanism's lifting end moves parallel to the height direction of the column. The main lifting mechanism includes a main boom slidably mounted on the column and a lifting component rotatably mounted on the main boom. The main boom is fixed to the lifting end of the lifting mechanism, and the lifting component is used to lift the two ends of the flow meter. The auxiliary lifting mechanism includes an auxiliary boom vertically mounted on the column, a winch fixed to the column, a lifting rope wound around the winch, and at least two fixed pulleys. The at least two fixed pulleys are located on the auxiliary boom and arranged along its length. The lifting rope passes through at least two fixed pulleys simultaneously. A hook is provided at the end of the boom furthest from the column. The auxiliary boom is longer than the main boom.

[0007] By adopting the above technical solution, the main boom is first lowered to its lowest position using a lifting mechanism, and the two ends of the flow meter are suspended on the lifting device. Then, the lifting mechanism raises the main boom and the flow meter to a designated height. Next, the winch is rotated to extend the lifting rope, and the operator pulls the rope to bring the hook close to the curved part of the flow meter, so that the hook hooks the curved part of the flow meter. Then, the winch is rotated in the opposite direction to shorten the lifting rope, so that the curved part of the flow meter is gradually raised until the flow meter is rotated 120 degrees (the curved part of the flow meter is higher than the end). Then, the lifting device is rotated relative to the main boom, so that one end of the flow meter is lower than the other end, allowing the liquid inside the flow meter to flow out from the lower end. The liquid can then be collected in a container. Using the above tooling, the flow meter can be easily tilted, and subsequent cleaning and emptying are easier and more convenient. Moreover, the tilting process does not require operator intervention, thus avoiding the safety problem caused by liquid splashing onto people, making the disassembly and assembly of the flow meter more efficient and safer.

[0008] Optionally, the auxiliary boom includes a fixed boom vertically mounted on the column and a telescopic boom slidably connected to the fixed boom. A pin for sliding locking is provided between the fixed boom and the telescopic boom, and at least two fixed pulleys are respectively provided on the rotating boom and the telescopic boom.

[0009] By adopting the above technical solution, since flow meters come in different specifications and sizes, and their overall heights also vary, it is necessary to adjust the length difference between the auxiliary boom and the main boom to accommodate the flipping of flow meters at different heights. Therefore, by sliding and locking the telescopic boom and the fixed boom against each other, the overall length of the auxiliary boom can be adjusted, thereby adjusting the length difference between the auxiliary boom and the main boom to accommodate the flipping of flow meters at different heights.

[0010] Optionally, the support leg includes a fixed support leg and a telescopic support leg slidably connected to the fixed support leg, the column is vertically fixed to the fixed support leg, and a pin for sliding locking is provided between the fixed support leg and the telescopic support leg.

[0011] By adopting the above technical solution, the increased length of the auxiliary boom causes the flow meter's center of gravity to gradually move away from the column after the hook lifts the curved part of the flow meter. This can lead to uneven stress and instability in the overall fixture. Therefore, by adjusting the mutual sliding and locking between the fixed and telescopic outriggers, the overall length of the outriggers can be adjusted to accommodate the length of the auxiliary boom. This increases the lever arm of the column, providing stable support for the flow meter's rotation.

[0012] Optionally, the lifting component includes a boom rotatably connected to the main boom via a rotating bearing and a ring assembly disposed on the boom. The rotation plane of the boom is perpendicular to the column. Each ring assembly includes two rings, which are disposed far apart. A sling is fixed to each ring, and the sling is used to fix the two ends of the flow meter to the ring.

[0013] By adopting the above technical solution, two slings are respectively fitted onto the two ends of the flowmeter and then fixed to two lifting rings to stably suspend the flowmeter on the boom. Since the curved part of the flowmeter is fixed, rotating the boom relative to the main boom through the rotating bearing can create a height difference between the two ends of the flowmeter, thereby allowing the liquid in the flowmeter to be poured out.

[0014] Optionally, the lifting ring group is configured as multiple groups, and the distance between the multiple lifting ring groups and the center of the lifting rod in the length direction decreases sequentially.

[0015] By adopting the above technical solution, the distance between the two ends of flow meters of different specifications and sizes is also different. By setting multiple sets of lifting rings with successively decreasing distances from the center of the rod length, it is possible to adapt to the hoisting of flow meters of different specifications and sizes, thereby improving practicality and applicability.

[0016] Optionally, the lifting mechanism includes a hydraulic cylinder fixed to the column, a sprocket rotatably connected to the piston rod of the hydraulic cylinder, and a chain meshing with the sprocket. The extension and retraction direction of the piston rod of the hydraulic cylinder is parallel to the column. One end of the chain is fixed to the column, and the main boom is fixedly connected to the other end of the chain.

[0017] By adopting the above technical solution, since one end of the chain is fixed to the column and the main boom is fixedly connected to the other end of the chain, the main boom can be raised and lowered by raising and lowering the sprocket through the piston rod of the hydraulic cylinder. When the sprocket rises, the chain drives the main boom to rise; when the sprocket falls, the chain drives the main boom to fall. Compared with the hydraulic cylinder directly lifting the main boom, the sprocket driving the high-tension reinforced transmission chain can lengthen the chain-to-axis distance when lifting the main boom, increase the lifting stroke of the main boom, and make the lifting and lowering more stable, thus making the installation of the flow meter more secure.

[0018] Optionally, the hydraulic cylinder is equipped with a lifting rocker arm and a release handle. The lifting rocker arm is used to control the extension and locking of the hydraulic cylinder piston rod. When descending, releasing the release handle can slowly lower the hoisted object.

[0019] Optionally, there are two sprockets and two chains. The piston rod of the hydraulic cylinder is vertically fixedly connected to a mounting rod. The two sprockets are rotatably connected to the two ends of the mounting rod. The two chains are respectively meshed with the two sprockets. The running paths of the two chains are parallel to each other. One end of each chain is fixedly connected to a column. The main boom is fixedly connected to the other end of the two chains.

[0020] By adopting the above technical solution and setting up two sprockets and chains, the lifting and lowering of the main boom can be made more stable.

[0021] Optionally, the column is a rectangular frame, and the number of the support legs is set to two, with the two support legs parallel to each other and both fixed perpendicularly to the column.

[0022] By adopting the above technical solution, the support for the flow meter can be made more stable.

[0023] Optionally, the outriggers are equipped with multiple traveling rollers, and the column is equipped with self-locking brake casters.

[0024] By adopting the above technical solution, multiple traveling rollers can facilitate the movement of the tooling more conveniently and quickly, and the self-locking brake swivel wheels can enable the tooling to change its direction of movement during the movement process.

[0025] Optionally, a support rod is provided between the auxiliary boom and the outrigger, with both ends of the support rod vertically connected to the auxiliary boom and the outrigger, respectively, and the support rod is located on the side of the main boom away from the column.

[0026] By adopting the above technical solution, the auxiliary boom can also be used to lift flow meters by supporting the support rod, thus improving its practicality and usability.

[0027] Optionally, the support rod is provided with adjusting sleeves at both ends. The adjusting sleeves at both ends of the support rod are respectively fitted and slidably connected to the auxiliary boom and the outrigger. The adjusting sleeve fitted to the outrigger is provided with a locking bolt, which is used to lock the sliding of the adjusting sleeve relative to the outrigger.

[0028] By adopting the above technical solution, the sliding lock of the sleeve relative to the outrigger and auxiliary boom is adjusted to achieve the sliding lock of the support rod relative to the outrigger and auxiliary boom, thereby adjusting the support rod to support different parts of the auxiliary boom.

[0029] In summary, this utility model has at least one of the following beneficial technical effects: 1. Using the above-mentioned tooling, the flow meter can be easily poured out, and subsequent cleaning and emptying are also easier and more convenient; moreover, the operation of pouring does not require the operator to move the flow meter, thus avoiding the safety problem caused by the liquid splashing onto people, thereby enabling more efficient and safer disassembly and assembly of the flow meter; 2. By sliding and locking the telescopic boom and the fixed boom together, the overall length of the auxiliary boom can be adjusted, thereby adjusting the length difference between the auxiliary boom and the main boom to accommodate the flipping of flow meters at different heights; 3. By sliding and locking the fixed outriggers and telescopic outriggers together, the overall length of the outriggers can be adjusted to adapt to the length of the auxiliary boom, thereby increasing the lever arm of the column and providing stable support for the rotation of the flow meter. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the flow meter assembly and disassembly tooling used in this utility model.

[0031] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0032] Explanation of reference numerals in the attached drawings: 1. Outrigger; 11. Fixed outrigger; 12. Telescopic outrigger; 2. Column; 3. Lifting mechanism; 31. Hydraulic cylinder; 311. Lifting rocker arm; 312. Unloading handle; 32. Sprocket; 33. Chain; 4. Main lifting mechanism; 41. Main boom; 42. Lifting component; 421. Lifting rod; 422. Lifting ring assembly; 423. Lifting strap; 43. Rotary bearing; 5. Auxiliary lifting mechanism; 51. Auxiliary boom; 511. Fixed boom; 512. Telescopic boom; 52. Winch; 53. Lifting rope; 54. Fixed pulley; 55. Hook; 551. Lifting frame; 6. Traveling roller; 7. Self-locking brake caster; 8. Support rod; 81. Adjusting sleeve; 82. Locking bolt; 9. Flow meter. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0034] Example 1: This utility model discloses a flow meter disassembly and assembly fixture. (Refer to...) Figure 1 The flow meter assembly / disassembly fixture includes support legs 1, column 2, lifting mechanism 3, main lifting mechanism 4, and auxiliary lifting mechanism 5. Column 2 is a rectangular frame and is vertically installed. There are two support legs 1, which are parallel to each other and vertically fixed to the bottom of column 2. Lifting mechanism 3, main lifting mechanism 4, and auxiliary lifting mechanism 5 are all located on column 2.

[0035] Reference Figure 1 Each of the two outriggers 1 is equipped with three traveling rollers 6. The traveling rollers 6 are heavy-duty widened polyurethane wheels with a core iron weight and a load-bearing capacity of 1.5 tons. The bottom of the column 2 is equipped with two self-locking brake casters 7. The self-locking brake casters 7 are polyurethane casters with a core iron weight and a self-locking brake, with a load-bearing capacity of 1.5 tons. The brake is locked when the foot is pressed and unlocked when the lever is pulled. The pulling resistance is low, and the casters are sturdy and corrosion-resistant.

[0036] Reference Figure 1 The lifting mechanism 3 includes a hydraulic cylinder 31, two sprockets 32, and a chain 33. The hydraulic cylinder 31 is fixedly installed on the column 2, and the extension and retraction direction of the piston rod of the hydraulic cylinder 31 is parallel to the column 2. The hydraulic cylinder 31 is a manual hydraulic cylinder, and it is equipped with a lifting rocker arm 311 and a release handle 312. The lifting rocker arm 311 is used to control the extension and locking of the piston rod of the hydraulic cylinder 31. When descending, the release handle 312 is released to depressurize the hydraulic cylinder 31. The descent speed can be adjusted according to its own characteristics, allowing for rapid descent or slow lowering of the hoisted object.

[0037] Reference Figure 1 A mounting rod is vertically fixed to the top of the piston rod of the hydraulic cylinder 31, and the center of the mounting rod along its length is connected to the piston rod of the hydraulic cylinder 31. Two sprockets 32 are rotatably connected to both ends of the mounting rod, and the planes of rotation of the two sprockets 32 are parallel to the length direction of the outrigger 1. Two chains 33 are respectively engaged with the two sprockets 32, and the running paths of the two chains 33 are parallel to each other. A crossbeam is fixedly installed on the column 2, and one end of each of the two chains 33 is fixedly connected to the crossbeam of the column 2.

[0038] Reference Figure 1 and Figure 2 The main lifting mechanism 4 includes a main boom 41 and a lifting component 42. The main boom 41 is vertically mounted on the column 2, and the lifting component 42 is located at the end of the main boom 41 away from the column 2. The lifting component 42 is used to lift the two ends of the flow meter 9. A sliding seat is fixedly connected to the end of the main boom 41 near the column 2. The sliding seat has a U-shaped plate structure and is fastened to the column 2. Vertically extending grooves are provided on both side walls of the column 2. The sliding seat is equipped with roller bearings, which are located and slide within the grooves to allow the sliding seat to smoothly slide and connect to the column 2. The sliding seat is also fixedly connected to the ends of two chains 33 away from the crossbeam.

[0039] Since one end of chain 33 is fixed to column 2, and the main boom 41 is fixedly connected to the other end of chain 33, the piston rod of hydraulic cylinder 31 extends and retracts to raise and lower sprocket 32. The raising and lowering of sprocket 32 ​​drives the end of chain 33 away from the crossbeam to rise and fall, thereby driving the main boom 41 to rise and fall. When sprocket 32 ​​rises, chain 33 drives the main boom 41 to rise; when sprocket 32 ​​falls, chain 33 drives the main boom 41 to fall. Compared to hydraulic cylinder 31 directly lifting the main boom 41, using sprocket 32 ​​to drive the high-tension reinforced transmission chain 33 can lengthen the chain-to-axis distance when lifting the main boom 41, increase the lifting stroke of the main boom 41, and make the lifting and lowering more stable, thus making the hoisting of flow meter 9 more secure.

[0040] Reference Figure 1 and Figure 2 The lifting component 42 includes a lifting rod 421 and multiple lifting ring assemblies 422 fixed to the lifting rod 421. The lifting rod 421 is horizontally positioned and rotatably connected to the main boom 41 via a rotating bearing 43. The rotation plane of the lifting rod 421 is horizontal. The rotating bearing 43 has a vertical load capacity of 1.5 tons, is made of 50Mn / 42CrMo national standard material, and undergoes overall tempering and quenching of the raceway. It can simultaneously withstand axial force, radial force, and tilting torque, and features a compact structure, high precision, and strong load-bearing capacity.

[0041] Reference Figure 2 A ring assembly 422 includes two rings, which are positioned far apart. Each ring is secured with a strap 423, which is used to fix the two ends of the flow meter 9 to the ring. The distance between the centers of the multiple ring assemblies 422 and the rod 421 along the length direction decreases sequentially.

[0042] By attaching two slings 423 to the two ends of the flowmeter 9 and then fixing the two slings 423 to two lifting rings, the flowmeter 9 is stably suspended on the lifting rod 421. The distance between the two ends of flowmeters 9 varies depending on their size. By setting multiple sets of lifting rings with progressively decreasing spacing from the center of the lifting rod 421 along its length, the system can accommodate flowmeters 9 of different sizes, thus improving practicality and applicability.

[0043] Reference Figure 1The auxiliary lifting mechanism 5 includes an auxiliary boom 51, a winch 52, a lifting rope 53, and two fixed pulleys 54. The auxiliary boom 51 is vertically fixed to the top of the column 2, and its length is greater than that of the main boom 41. The winch 52 is rotatably connected to the column 2, and its rotation plane is the plane of the column 2. The winch 52 is equipped with a crank for rotating it, and the lifting rope 53 is wound and stored in the winch 52. The two fixed pulleys 54 are rotatably connected to both ends of the auxiliary boom 51, and the lifting rope 53 passes through both pulleys 54 simultaneously. A hook 55 is fixedly connected to the end of the boom away from the column 2. The winch 52 is bidirectionally self-locking with double safety nuts. When not in operation, the brake automatically opens. It is integrally forged, and the all-metal high-temperature quenched gears are durable. The lifting rope 53 is a steel wire rope composed of multiple strands of steel wire, with strong load-bearing capacity and tensile strength, and is not easily broken. It is equipped with double pressure buckles and anti-wear sleeves at the front. The hook is 55mm thick and weld-free, made of one-piece high-strength forged and thickened material, with a humanized arc design to prevent it from coming off.

[0044] First, the main boom 41 is lowered to its lowest position using hydraulic cylinder 31, sprocket 32, and chain 33. The two ends of the flow meter 9 are then suspended on sling 423. Next, the main boom 41 and flow meter 9 are raised to the designated height. The winch 52 is rotated to extend the hoisting rope 53. The operator pulls the rope 53 so that the hook 55 approaches the curved part of the flow meter 9 and engages with it. Then, the winch 52 is rotated in the opposite direction to shorten the rope 53, gradually raising the curved part of the flow meter 9 until it is rotated 120 degrees (the curved part of the flow meter 9 is higher than the end). Since the curved part of the flow meter 9 is now fixed, rotating the boom 421 relative to the main boom 41 allows one end of the flow meter 9 to be lower than the other end, allowing the liquid inside the flow meter 9 to flow out from the lower end. The liquid can then be collected in a container. Using the above-mentioned tooling, the flow meter 9 can be easily tilted, and subsequent cleaning and emptying are easier and more convenient; moreover, the tilting process does not require any operator, thus avoiding the safety problem caused by the spilled liquid splashing onto people, thereby enabling more efficient and safer disassembly and assembly of the flow meter 9.

[0045] Reference Figure 1Since the flow meters 9 come in different sizes and have varying overall heights, an auxiliary boom 51 is provided to accommodate the flipping of flow meters 9 at different heights. The auxiliary boom 51 includes a fixed boom 511 and a telescopic boom 512. The fixed boom 511 is vertically mounted on the top of the column 2, and the telescopic boom 512 extends and retracts through it. Both the fixed boom 511 and the telescopic boom 512 have corresponding insertion holes. When the fixed boom 511 and the telescopic boom 512 extend to a specified length, they are locked in place by inserting pins into the corresponding insertion holes. Therefore, through the mutual sliding and locking between the telescopic boom 512 and the fixed boom 511, the overall length of the auxiliary boom 51 can be adjusted, thereby adjusting the length difference between the auxiliary boom 51 and the main boom 41 to accommodate the flipping of flow meters 9 at different heights.

[0046] Reference Figure 1 As the auxiliary boom 51 increases in length, the lifting hook 55 raises the curved part of the flow meter 9, causing the center of gravity of the flow meter 9 to gradually move away from the column 2. This can lead to uneven stress and instability in the overall fixture. The support leg 1 includes a fixed support leg 11 and a telescopic support leg 12. The column 2 is vertically fixed to the fixed support leg 11, and the telescopic support leg 12 is inserted through and slidably connected to the fixed support leg 11. The fixed support leg 11 and the telescopic support leg 12 are each provided with multiple insertion holes. When the fixed support leg 11 and the telescopic support leg 12 extend or retract to a specified length, they are locked in place by inserting pins into the aligned insertion holes. Through the mutual sliding and locking between the fixed support leg 11 and the telescopic support leg 12, the overall length of the support leg 1 can be adjusted to accommodate the length of the auxiliary boom 51, thereby increasing the lever arm of the column 2 and providing stable support for the rotation of the flow meter 9.

[0047] Reference Figure 1 A support rod 8 is provided between the telescopic outrigger 12 and the telescopic boom 512, and the support rod 8 is perpendicular to both the telescopic outrigger 12 and the telescopic boom 512. An adjusting sleeve 81 is fixedly installed at the upper end of the support rod 8, and two adjusting sleeves 81 are fixedly installed at the lower end of the support rod 8 via a connecting rod. The adjusting sleeve at the upper end of the support rod 8 is fitted and slidably connected to the telescopic boom 512, and the two adjusting sleeves at the lower end of the support rod 8 are respectively fitted and slidably connected to the two telescopic outriggers 12. The adjusting sleeve fitted to the telescopic outrigger 12 is provided with a locking bolt 82, which is used to lock the sliding of the adjusting sleeve relative to the outrigger 1.

[0048] The support rod 8 provides support for the telescopic boom 512, making the lifting of the curved part of the flow meter 9 by the auxiliary boom 51 more stable. It also allows the auxiliary boom 51 to be used for lifting the flow meter 9, improving its practicality and usability. By adjusting the sliding lock of the sleeve relative to the outrigger 1 and the auxiliary boom 51, the support rod 8 can be locked relative to the outrigger 1 and the auxiliary boom 51, thus adjusting the support rod 8's support for different parts of the auxiliary boom 51. The hook 55 can also be connected to a corresponding lifting frame 551, which is also used for lifting the flow meter 9.

[0049] The implementation principle of the flowmeter assembly / disassembly fixture according to this utility model embodiment is as follows: First, the main boom 41 is lowered to its lowest position using the hydraulic cylinder 31, sprocket 32, and chain 33. The two ends of the flowmeter 9 are then suspended on the sling 423. Next, the main boom 41 and the flowmeter 9 are raised to a designated height. The winch 52 is rotated to extend the sling 53, and the operator pulls the sling 53 so that the hook 55 approaches the curved part of the flowmeter 9 and hooks the curved part of the flowmeter 9. Then, the winch 52 is rotated in the opposite direction to shorten the sling 53, so that the curved part of the flowmeter 9 is gradually raised until the flowmeter 9 is rotated 120 degrees (the curved part of the flowmeter 9 is higher than the end). Since the curved part of the flowmeter 9 has been fixed, the boom 421 is rotated relative to the main boom 41 so that one end of the flowmeter 9 is lower than the other end, allowing the liquid inside the flowmeter 9 to flow out from the lower end. The liquid can then be collected in a container.

[0050] Example 2: This utility model discloses a flow meter assembly / disassembly fixture, which differs from Embodiment 1 in that: the fixed boom 511 is rotatably connected to the column 2, and a rotation locking component is provided at the rotatable connection between the fixed boom 511 and the column 2. The rotation locking component can be of various types; in this embodiment, a fixing bolt and a locking nut are used. By rotating the fixed boom 511 upwards and fixing it, the height of the end of the telescopic boom 512 can be adjusted, thereby enabling the telescopic boom 512 and the lifting rope 53 to lift the flow meter 9, which has a larger size.

[0051] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A flow meter disassembly and assembly tool, characterized in that: The system includes a support leg (1), a column (2) vertically fixed to the support leg (1), a lifting mechanism (3) installed on the column (2), a main lifting mechanism (4), and an auxiliary lifting mechanism (5). The lifting mechanism (3) moves in a direction parallel to the height of the column (2). The main lifting mechanism (4) includes a main boom (41) slidably installed on the column (2) and a lifting component (42) rotatably installed on the main boom (41). The main boom (41) is fixed to the lifting end of the lifting mechanism (3), and the lifting component (42) is used to lift the two ends of the flow meter (9). The auxiliary lifting mechanism (5) includes an auxiliary boom (51) vertically mounted on the column (2), a winch (52) fixed to the column (2), a lifting rope (53) wound around the winch (52), and at least two fixed pulleys (54). The at least two fixed pulleys (54) are located on the auxiliary boom (51) and arranged along its length. The lifting rope (53) passes through at least two fixed pulleys (54) simultaneously. A hook (55) is provided at the end of the main boom (41) away from the column (2). The length of the auxiliary boom (51) is greater than that of the main boom (41).

2. The flow meter disassembly and assembly fixture according to claim 1, characterized in that: The auxiliary boom (51) includes a fixed boom (511) vertically mounted on the column (2) and a telescopic boom (512) slidably connected to the fixed boom (511). A pin for sliding locking is provided between the fixed boom (511) and the telescopic boom (512). At least two fixed pulleys (54) are respectively provided on the rotating boom and the telescopic boom (512).

3. The flow meter disassembly and assembly fixture according to claim 2, characterized in that: The support leg (1) includes a fixed support leg (11) and a telescopic support leg (12) slidably connected to the fixed support leg (11). The column (2) is vertically fixed to the fixed support leg (11). A pin for sliding locking is provided between the fixed support leg (11) and the telescopic support leg (12).

4. The flow meter disassembly and assembly fixture according to claim 1, characterized in that: The lifting component (42) includes a boom (421) rotatably connected to the main boom (41) via a rotating bearing (43) and a ring assembly (422) disposed on the boom (421). The rotation plane of the boom (421) is perpendicular to the column (2). One ring assembly (422) includes two rings, which are disposed far apart. A sling (423) is fixed on the ring, and the sling (423) is used to fix the two ends of the flow meter (9) to the ring.

5. The flow meter disassembly and assembly fixture according to claim 4, characterized in that: The lifting ring group (422) is configured as multiple, and the distance between the multiple lifting ring groups (422) and the center of the lifting rod (421) in the length direction decreases sequentially.

6. The flow meter disassembly and assembly fixture according to claim 1, characterized in that: The lifting mechanism (3) includes a hydraulic cylinder (31) fixed to the column (2), a sprocket (32) rotatably connected to the piston rod of the hydraulic cylinder (31), and a chain (33) meshing with the sprocket (32). The extension and retraction direction of the piston rod of the hydraulic cylinder (31) is parallel to the column (2). One end of the chain (33) is fixed to the column (2), and the main boom (41) is fixedly connected to the other end of the chain (33).

7. A flow meter disassembly and assembly fixture according to claim 6, characterized in that: The sprockets (32) and chains (33) are both provided in pairs. The piston rod of the hydraulic cylinder (31) is vertically fixedly connected to the mounting rod. The two sprockets (32) are rotatably connected to the two ends of the mounting rod respectively. The two chains (33) are respectively meshed with the two sprockets (32). The running paths of the two chains (33) are parallel to each other. One end of each chain (33) is fixedly connected to the column (2). The main boom (41) is fixedly connected to the other end of the two chains (33).

8. A flow meter disassembly and assembly fixture according to any one of claims 1 or 7, characterized in that: The outrigger (1) is equipped with multiple walking rollers (6), and the column (2) is equipped with self-locking brake casters (7).

9. The flow meter disassembly and assembly fixture according to claim 1, characterized in that: A support rod (8) is provided between the auxiliary boom (51) and the outrigger (1). The two ends of the support rod (8) are vertically connected to the auxiliary boom (51) and the outrigger (1), respectively. The support rod (8) is located on the side of the main boom (41) away from the column (2).

10. A flow meter disassembly and assembly fixture according to claim 9, characterized in that: The support rod (8) is provided with adjusting sleeves (81) at both ends. The adjusting sleeves at both ends of the support rod (8) are respectively fitted and slidably connected to the auxiliary boom (51) and the outrigger (1). The adjusting sleeve fitted to the outrigger (1) is provided with locking bolts (82). The locking bolts (82) are used to lock the sliding of the adjusting sleeve relative to the outrigger (1).

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