Electromagnetic flowmeter assembling device and assembling method

Abstract

The invention relates to an electromagnetic flowmeter assembling device and method. The electromagnetic flowmeter assembling device comprises a moving mechanism, a rotating mechanism and a clamping mechanism. The rotating mechanism is used for clamping and driving the measuring conduit to rotate; the clamping mechanism is installed on the moving mechanism and comprises a clamping base, a centering assembly is horizontally installed on the clamping base, a plurality of clamping jaws are arranged on the periphery of the centering assembly, and the centering assembly can drive the multiple clamping jaws to synchronously get close to or synchronously get away from the axis of the centering assembly; the clamping jaw can reciprocate in the axial direction of the centering assembly. The linings are clamped and assembled through the clamping jaws, automatic assembly of the linings is achieved, the labor intensity is reduced, and the assembly efficiency is improved; flexible assembly of the lining is achieved by heating the lining in the clamping jaw, the lining can be conveniently assembled into the measuring guide pipe, the risk that the lining is broken due to a knocking type assembly method is avoided, and the assembly quality of the lining is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent equipment, and in particular to an electromagnetic flowmeter assembling device and method. BACKGROUND

[0002] The electromagnetic flowmeter is a kind of instrument for measuring the flow of conductive fluid according to the induced electromotive force generated when the conductive fluid passes through an applied magnetic field by applying the principle of electromagnetic induction. The electromagnetic flowmeter mainly consists of a magnetic circuit system, a measuring conduit, electrodes, a housing, a liner and a converter. The liner is laid on the inner side of the measuring conduit and the flange sealing surface, which is used to increase the corrosion resistance of the measuring conduit and prevent the induced potential from being short-circuited by the metal measuring conduit wall.

[0003] The existing electromagnetic flowmeter generally clamps the liner by a clamping mechanism and assembles it into the measuring conduit by extrusion when assembling the liner onto the measuring conduit. This assembly method is prone to cause poor fit between the liner and the inner wall of the measuring conduit, resulting in bulging of the liner and affecting the detection accuracy of the electromagnetic flowmeter. Even the liner is extruded and broken, which affects the service life of the electromagnetic flowmeter.

[0004] Based on the above technical problems, the present application provides an electromagnetic flowmeter assembling device and method. SUMMARY

[0005] The purpose of the present application is to provide an electromagnetic flowmeter assembling device and method to solve the technical problems mentioned in the background art. The purpose of the present application is achieved by the following technical solutions: An electromagnetic flowmeter assembling device, comprising a moving mechanism, a rotating mechanism and a clamping mechanism; the rotating mechanism is installed at one end of the moving mechanism, and the rotating mechanism is used to clamp and drive the measuring conduit to rotate, and the rotation axis of the measuring conduit is parallel to the moving direction of the moving mechanism; the clamping mechanism is installed on the moving mechanism, and the moving mechanism is used to drive the clamping mechanism to approach or move away from the rotating mechanism; the clamping mechanism comprises a clamping base, a centering assembly is horizontally installed on the clamping base, the centering assembly is coaxially arranged with the measuring conduit, a plurality of clamping claws are arranged on the outer periphery of the centering assembly, and the centering assembly can drive the plurality of clamping claws to synchronously approach or synchronously move away from the axis of the centering assembly; the clamping claws can reciprocate along the axial direction of the centering assembly, when the clamping claws move out of the centering assembly, the inscribed circle of the plurality of clamping claws forms a clamping space for clamping the liner; when the clamping claws move to coincide with the centering assembly, the circumscribed circle of the plurality of clamping claws forms a pressing surface for extruding the liner.

[0006] Furthermore, the centering assembly includes a first telescopic drive member, a first guide sleeve and a second guide sleeve. The first guide sleeve and the second guide sleeve are installed at intervals on the side of the clamping base close to the rotating mechanism. The first guide sleeve and the second guide sleeve are both coaxially arranged with the measuring tube. The periphery of the first guide sleeve is hinged with a plurality of first connecting rods, the periphery of the second guide sleeve is hinged with a number of second connecting rods equal to the number of the first connecting rods, a third connecting rod is hinged between the first connecting rod and the second connecting rod, and the third connecting rod is parallel to the axis of the measuring tube; the outer end face of the third connecting rod is installed with the second telescopic drive member, and the claw is installed on the second telescopic drive member; the first telescopic drive member is horizontally installed on the side of the clamping base away from the rotating mechanism, the telescopic end of the first telescopic drive member is fixed with a telescopic rod, the telescopic rod is slidably installed between the first guide sleeve and the second guide sleeve, a driving block is fixed on the telescopic rod, the driving block is located between the first guide sleeve and the second guide sleeve, and the driving rod is hinged between the driving block and the middle part of the second connecting rod.

[0007] Furthermore, the clamping claw is a cylindrical structure, a cavity is defined in the clamping claw, and a heating component is installed in the cavity.

[0008] Furthermore, an air inlet is provided at one end of the clamping claw away from the rotating mechanism, and the air inlet is communicated with the cavity; a plurality of air blowing ports are evenly provided on the circumference of the clamping claw, and the air blowing ports are communicated with the cavity.

[0009] Furthermore, the rotating mechanism includes an upper bracket and a lower bracket, and two pairs of driven wheels are installed on the upper end surface of the lower bracket, and the two pairs of driven wheels are respectively located at the two ends of the measuring tube; the upper bracket is installed above the lower bracket by a lifting drive member, and a pair of driving wheels are installed on the lower end surface of the upper bracket, and the pair of driving wheels are located in the middle of the measuring tube. A driving motor is installed on the upper bracket, and the output shaft of the driving motor is connected to the driving wheel.

[0010] Furthermore, the moving mechanism includes a base, on which two guide rails are installed in parallel, a moving platform is installed between the guide rails through sliders, and the clamping mechanism is installed on the moving platform; a moving drive component is installed between the base and the moving platform, and the moving drive component is used to drive the moving platform to move back and forth along the guide rails.

[0011] An assembly method using any of the above-mentioned electromagnetic flowmeter assembly devices comprises the following steps: Step S1. Install the measuring tube onto the rotating mechanism; adjust the clamping mechanism to the end of the moving mechanism away from the rotating mechanism, adjust the claws so that the claws extend out of the centering assembly, and place the liner in the clamping space surrounded by the claws; Step S2. The liner is heated, and the distance between the jaws and the axis of the centering assembly is slowly reduced through the centering assembly, so that the jaws clamp the liner and bend the liner inwardly until the circumscribed circle of the jaws is smaller than the inner diameter of the measuring tube; Step S3. The moving mechanism drives the clamping mechanism to move close to the rotating mechanism, so that the clamping jaw extends into the measuring conduit and the liner is sent into the measuring conduit; the control claw is withdrawn one by one, so that the liner is left in the measuring conduit; Step S4. The distance between the clamping jaw and the centering assembly axis is continuously reduced by the centering assembly, the clamping mechanism is driven by the moving mechanism to move close to the rotating mechanism, so that the clamping jaw and the centering assembly extend into the liner; the rotating mechanism drives the measuring conduit to rotate, the centering assembly increases the distance between the clamping jaw and the centering assembly axis, and the liner is extruded by the clamping jaw; Step S5. The moving mechanism drives the clamping mechanism to move away from the rotating mechanism, and the measuring conduit with the assembled liner is unloaded, and the steps S1-S4 are repeated.

[0012] Further, the heating temperature of the liner in step S2 is 100-120℃.

[0013] The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages: 1. The liner is clamped and assembled by the clamping jaw, so that the automatic assembly of the liner is realized, the labor intensity is reduced, and the assembly efficiency is improved; 2. The flexible assembly of the liner is realized by heating the liner in the clamping jaw, the liner can be conveniently assembled into the measuring conduit, the risk of liner breakage caused by the knocking assembly method is avoided, and the assembly quality of the liner is ensured; 3. After the liner is assembled after being heated, the air between the liner and the measuring conduit can be discharged by extrusion from the inner wall of the cylindrical clamping jaw, so that the connection strength of the liner and the measuring conduit is improved; at the same time, the extrusion can also improve the flatness of the inner surface of the liner, and improve the measurement accuracy of the electromagnetic flowmeter; 4. By installing the heating assembly in the clamping jaw, the liner can be directly heated by the clamping jaw; by opening the air blowing hole on the surface of the clamping jaw, the uniformity of the liner heating can be improved; in addition, closing the heating assembly during air blowing can also improve the cooling efficiency of the liner and improve the assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0015] Figure 1 It is a structural schematic diagram of the embodiment of the application; Figure 2 It is a schematic diagram of the connection between the clamping mechanism and the moving mechanism of the embodiment of the application; Figure 3 This is a schematic diagram of the centering mechanism structure of an embodiment of the present application; Figure 4 This is a schematic diagram of the claw structure of an embodiment of the present application; Figure 5 This is a schematic diagram of the clamping state of an embodiment of the present application; Figure 6 This is a schematic diagram of the extrusion state of an embodiment of the present application.

[0016] Figure numerals: 1. Moving mechanism; 11. Base; 12. Guide rail; 13. Slider; 14. Moving platform; 15. Moving drive member; 2. Rotating mechanism; 21. Upper bracket; 22. Lower bracket; 23. Driven wheel; 24. Driving wheel; 25. Driving motor; 3. Clamping mechanism; 31. Clamping base; 32. Centering assembly; 321. First telescopic drive member; 322. First guide sleeve; 323. Second guide sleeve; 324. First connecting rod; 325. Second connecting rod; 326. Third connecting rod; 327. Telescopic rod; 328. Driving block; 329. Driving rod; 33. Second telescopic drive member; 34. Claw; 4. Measuring catheter; 5. Lining. DETAILED DESCRIPTION

[0017] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0018] Example 1 like Figure 1 The electromagnetic flowmeter assembly device shown in the figure includes a moving mechanism 1, a rotating mechanism 2, and a clamping mechanism 3. The rotating mechanism 2 is mounted on the left end of the moving mechanism 1 and is used to clamp and drive the measuring tube 4 to rotate, with the measuring tube 4's rotation axis parallel to the movement direction of the moving mechanism 1. The clamping mechanism 3 is mounted on the moving mechanism 1 and is used to drive the clamping mechanism 3 toward or away from the rotating mechanism 2.

[0019] like Figure 2 As shown, the mobile mechanism 1 includes a base 11. Two guide rails 12 are mounted parallel to the upper end surface of the base 11. Two sliders 13 are mounted on each guide rail 12. A mobile platform 14 is movably mounted on the guide rails 12 via the sliders 13, allowing the mobile platform 14 to move back and forth along the guide rails 12. A mobile driver 15 is mounted between the base 11 and the mobile platform 14. The mobile driver 15 is a lead screw linear module that can drive the mobile platform 14 to move back and forth along the guide rails 12 and precisely control the position of the mobile platform 14 on the guide rails 12.

[0020] like Figure 1As shown, the rotating mechanism 2 includes an upper bracket 21 and a lower bracket 22. A V-shaped groove (not shown) extending horizontally is defined in the middle of the upper end surface of the lower bracket 22. Two pairs of driven pulleys 23 are mounted at either end of the V-shaped groove, one at each end of the measuring tube 4. The upper bracket 21 is mounted directly above the lower bracket 22 via a lifting cylinder (not shown). An inverted V-shaped groove (not shown) extending horizontally is defined in the middle of the lower end surface of the upper bracket 21. A pair of driving pulleys 24 are mounted in the middle of the inverted V-shaped groove, positioned centrally within the measuring tube 4. A drive motor 25 is mounted on the side of the upper bracket 21. The output shaft of the drive motor 25 is connected to the driving pulley 24 via a transmission gear.

[0021] When in use, the measuring tube 4 is placed on the driven wheel 23 of the lower bracket 22, and the upper bracket 21 is driven downward by the lifting cylinder to make the driving wheel 24 abut against the measuring tube 4. The driving motor 25 rotates to drive the driving wheel 24 to rotate, thereby driving the measuring tube 4 to rotate.

[0022] Preferably, the driven wheel 23 and the driving wheel 24 are both made of rubber to increase the friction with the outer wall of the measuring tube 4 and prevent the measuring tube 4 from slipping. The distance between the two pairs of driven wheels 23 is adjustable, so that measuring tubes 4 of different lengths can be clamped and rotated.

[0023] like Figure 2 、 Figure 3 As shown, the clamping mechanism 3 includes a clamping base 31, which is vertically mounted on the mobile platform 14. A centering assembly 32 is horizontally mounted on the clamping base 31, and the axis of the centering assembly 31 is coaxially arranged with the axis of the measuring tube 4. Three groups of claws 34 are mounted on the periphery of the centering assembly 32, and the centering assembly 32 can drive the three groups of claws 34 to synchronously approach or move away from the axis of the centering assembly 32. The claws 34 are mounted on the outside of the centering assembly 32 through a second telescopic drive member 33, so that the claws 34 can move back and forth along the axial direction of the centering assembly 32. When the claws 34 move out of the centering assembly 32, the inscribed circles of the three groups of claws 34 form a clamping space for clamping the liner 5; when the claws 34 move to coincide with the centering assembly 32, the circumscribed circles of the three groups of claws 34 form a pressing surface for squeezing the liner 5.

[0024] like Figure 2 、 Figure 3 As shown, the centering assembly 32 includes a first telescopic drive member 321, a first guide sleeve 322 and a second guide sleeve 323. The second guide sleeve 323 is installed on the left end face of the clamping base 31, and the first guide sleeve 322 is installed on the left side of the second guide sleeve 323 through a bracket, and the first guide sleeve 322 and the second guide sleeve 323 are both coaxially arranged with the measuring catheter 4.

[0025] Three first connecting rods 324 are hingedly connected to the outer periphery of the first guide sleeve 322. The three first connecting rods 324 are evenly distributed along the circumference of the first guide sleeve 322. Three second connecting rods 325 are hingedly connected to the outer periphery of the second guide sleeve 323. The second connecting rods 325 are evenly distributed along the circumference of the second guide sleeve 323, and the second connecting rods 325 correspond one-to-one with the first connecting rods 324. Third connecting rods 326 are hingedly connected between the ends of the corresponding first connecting rods 324 and second connecting rods 325. The third connecting rods 326 are parallel to the axis of the measuring catheter 4.

[0026] The first telescopic drive member 321 is mounted horizontally on the right end surface of the clamping base 31. A telescopic rod 327 is mounted on the telescopic end of the first telescopic drive member 321. The telescopic rod 327 extends through the clamping base 31 and extends between the first guide sleeve 322 and the second guide sleeve 323. A driving block 328 is fixed to the telescopic rod 327 and positioned between the first guide sleeve 322 and the second guide sleeve 323. The first telescopic drive member 321 can drive the telescopic rod 327 to reciprocate, causing the driving block 328 to reciprocate between the first guide sleeve 322 and the second guide sleeve 323. A driving rod 329 is hingedly connected between the driving block 328 and the middle portion of the second connecting rod 325. When the first telescopic drive member 321 pushes the telescopic rod 327 to the left, the driving block 328 moves leftward, and the driving rod 329 pulls the second connecting rod 325 to tilt leftward, causing the third connecting rod 326 to move inward toward the telescopic rod 327. When the first telescopic driving member 321 pushes the telescopic rod 327 to move right, the driving block 328 moves rightward, and the driving rod 329 pushes the second connecting rod 325 to tilt rightward, so that the third connecting rod 326 moves away from the telescopic rod 327. The first telescopic driving member 321 can be a cylinder, a hydraulic cylinder or an electric push rod.

[0027] like Figures 2-4 As shown, the second telescopic drive member 33 is mounted on the outer end surface of the third connecting rod 326, and the right end of the claw 34 is mounted on the second telescopic drive member 33 via a connecting block 331. When the second telescopic drive member 33 extends, the claw 34 extends to the left and staggers the third connecting rod 326; when the second telescopic drive member 33 contracts, the claw 34 retracts to the right and overlaps the third connecting rod 326.

[0028] Preferably, the jaw 34 is cylindrical in structure, with a cavity extending along its length. An electric heating assembly (not shown) is installed within the cavity. An air inlet 341 is provided at the right end of the jaw 34, communicating with the cavity. The air inlet 341 is connected to the air compressor via a pipe. Several air outlets 342, communicating with the cavity, are evenly distributed around the circumference of the jaw 34. During use, when both the air compressor and the electric heating assembly are activated simultaneously, the air outlets 342 of the jaw 34 eject hot air to heat the lining 5. When only the air compressor is activated, the air outlets 342 of the jaw 34 eject cold air to cool the lining 5.

[0029] Embodiment 2 As Figures 1-6 shown, an assembly method using any of the above electromagnetic flowmeter assembly devices, comprising the following steps: Step S1. Place the measuring conduit 4 between the two pairs of driven wheels 23 of the rotating mechanism 2, drive the upper bracket 21 down by the lifting cylinder, so that the measuring conduit 4 is clamped between the driving wheel 24 and the driven wheel 23.

[0030] As Figure 5 shown, adjust the moving mechanism 1 to move the clamping mechanism 2 to the right end of the moving mechanism 1. Drive the clamping jaws 34 to extend out by the second telescopic drive 33, place the liner 5 in the clamping space surrounded by the three clamping jaws 34, and adjust the distance between the three clamping jaws 34 and the axis of the telescopic rod 327 by the first telescopic drive 321, so that the diameter of the incircle of the three clamping jaws 34 is just equal to the outer diameter of the liner 5.

[0031] Step S2. Start the air compressor and the electric heating mechanism at the same time, heat the liner 5 to 100-120℃ by the clamping jaws 34, and soften the polytetrafluoroethylene liner. Slowly reduce the distance between the clamping jaws 34 and the telescopic rod 327 by the first telescopic drive 321, so that the clamping jaws 34 clamp the liner 5 and make the liner 5 bend and deform inward, until the circumscribed circle of the three clamping jaws 34 is smaller than the inner diameter of the measuring conduit 4.

[0032] By heating the liner in the clamping jaws, the liner is softened by heat, realizing flexible assembly of the liner, which on the one hand can conveniently assemble the liner into the measuring conduit, improving the assembly efficiency; on the other hand, it can also avoid the risk of liner breakage caused by extrusion assembly method, ensuring the assembly quality of the liner. By installing a heating assembly in the clamping jaws, the liner can be heated directly by the clamping jaws; by opening air blowing holes on the surface of the clamping jaws, the uniformity of the liner heating can be improved.

[0033] Step S3. Drive the clamping mechanism 3 to move left by the moving mechanism 1, so that the clamping jaws 34 extend into the measuring conduit 4, thereby sending the liner 5 into the measuring conduit 4. Control the clamping jaws 34 to be withdrawn one by one by the second telescopic drive 33, so that the liner 5 is left in the measuring conduit 4.

[0034] By clamping and assembling the liner with the clamping jaws, the automatic assembly of the liner is realized, reducing the labor intensity and improving the assembly efficiency. By withdrawing the clamping jaws one by one, the friction between the clamping jaws and the liner can be reduced, avoiding displacement of the liner during the withdrawal process. In addition, the air blowing holes on the clamping jaws can also form an isolation between the liner and the clamping jaws, further reducing the friction between the clamping jaws and the liner, and improving the assembly precision of the liner.

[0035] Step S4. Continue to reduce the distance between the claws 34 and the telescopic rod 327 by the first telescopic driving member 321, so as to move the claws 34 into the horizontal projection of the liner 5. Then, the moving mechanism 1 drives the clamping mechanism 3 to move left, so as to move the claws 34 and the centering assembly 32 into the liner 5. The rotating mechanism 2 drives the measuring conduit 4 to rotate by the driving wheel 24. Adjust the first telescopic driving member 321 to increase the distance between the claws 34 and the telescopic rod 327, so that the diameter of the circumscribed circle of the three claws 34 is greater than or equal to the inner diameter of the liner 5, and the liner 5 is pressed by the claws 34.

[0036] The liner is softened by heating, and the inner liner is shrunk by clamping, so that the liner can be conveniently placed into the measuring conduit. The liner is pressed by the cylindrical claws from the inner wall of the liner, which can not only expel the air between the liner and the measuring conduit, but also improve the connection strength of the liner and the measuring conduit; at the same time, the liner is pressed in the softened state, which can also flatten the inner surface of the liner, thereby improving the flatness of the inner surface of the liner and improving the measurement accuracy of the electromagnetic flowmeter.

[0037] In addition, the electric heating assembly is closed at the same time of pressing, and the liner is blown by the air blowing hole, which can also improve the cooling efficiency of the liner and improve the assembly efficiency.

[0038] Step S5. The moving mechanism drives the clamping mechanism to move away from the rotating mechanism, and the measuring conduit with the assembled liner is removed, and the steps S1-S4 are repeated.

[0039] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as the above preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, are still within the scope of the present application.

Claims

1. An electromagnetic flowmeter assembly device, characterized in that: The invention comprises a moving mechanism, a rotating mechanism and a clamping mechanism; the rotating mechanism is installed at one end of the moving mechanism, the rotating mechanism is used to clamp and drive the measuring tube to rotate, and the rotation axis of the measuring tube is parallel to the moving direction of the moving mechanism; the clamping mechanism is installed on the moving mechanism, and the moving mechanism is used to drive the clamping mechanism to approach or move away from the rotating mechanism; the clamping mechanism comprises a clamping base, a centering assembly is horizontally installed on the clamping base, the centering assembly is coaxially arranged with the measuring tube, a plurality of claws are arranged on the periphery of the centering assembly, and the centering assembly can drive the plurality of claws to synchronously approach or move away from the axis of the centering assembly; the claw can reciprocate along the axial direction of the centering assembly, and when the claw moves and extends out of the centering assembly, the inscribed circles of the plurality of claws form a clamping space for clamping a liner; when the claw moves to coincide with the centering assembly, the circumscribed circles of the plurality of claws form a pressing surface for squeezing the liner.

2. The electromagnetic flowmeter assembly device according to claim 1, characterized in that: The centering assembly includes a first telescopic drive member, a first guide sleeve and a second guide sleeve, the first guide sleeve and the second guide sleeve are installed at intervals on the side of the clamping base close to the rotating mechanism, the first guide sleeve and the second guide sleeve are both coaxially arranged with the measuring tube, the outer periphery of the first guide sleeve is hinged with a plurality of first connecting rods, the outer periphery of the second guide sleeve is hinged with a number of second connecting rods equal to the number of the first connecting rods, a third connecting rod is hinged between the first connecting rod and the second connecting rod, and the third connecting rod is parallel to the axis of the measuring tube; the outer end surface of the third connecting rod is installed with a second telescopic drive member, and the clamping claw is installed on the second telescopic drive member; the first telescopic drive member is horizontally installed on the side of the clamping base away from the rotating mechanism, the telescopic end of the first telescopic drive member is fixed with a telescopic rod, the telescopic rod is slidably installed between the first guide sleeve and the second guide sleeve, a driving block is fixed on the telescopic rod, the driving block is located between the first guide sleeve and the second guide sleeve, and a driving rod is hinged between the driving block and the middle part of the second connecting rod.

3. The electromagnetic flowmeter assembly device according to claim 1, characterized in that: The clamping claw is a cylindrical structure, a cavity is defined in the clamping claw, and a heating component is installed in the cavity.

4. The electromagnetic flowmeter assembly device according to claim 3, characterized in that: An air inlet is provided at one end of the clamping claw away from the rotating mechanism, and the air inlet is communicated with the cavity; a plurality of air blowing ports are evenly provided on the circumference of the clamping claw, and the air blowing ports are communicated with the cavity.

5. The electromagnetic flowmeter assembly device according to claim 1, characterized in that: The rotating mechanism includes an upper bracket and a lower bracket, and two pairs of driven wheels are installed on the upper end surface of the lower bracket, and the two pairs of driven wheels are respectively located at the two ends of the measuring tube; the upper bracket is installed above the lower bracket in a liftable manner through a lifting drive member, and a pair of driving wheels are installed on the lower end surface of the upper bracket, and the pair of driving wheels are located in the middle of the measuring tube. A driving motor is installed on the upper bracket, and the output shaft of the driving motor is transmission-connected to the driving wheel.

6. The electromagnetic flowmeter assembly device according to claim 1, characterized in that: The moving mechanism includes a base, two guide rails are installed in parallel on the base, a moving platform is installed between the guide rails via sliders, and the clamping mechanism is installed on the moving platform; a moving drive component is installed between the base and the moving platform, and the moving drive component is used to drive the moving platform to move back and forth along the guide rails.

7. An assembly method using the electromagnetic flowmeter assembly device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step S1, installing the measuring tube on the rotating mechanism; adjusting the clamping mechanism to the end of the moving mechanism away from the rotating mechanism, adjusting the claws so that the claws extend out of the centering assembly, and placing the liner in the clamping space surrounded by the claws; Step S2: heating the lining, and slowly reducing the distance between the clamping jaws and the axis of the centering assembly through the centering assembly, so that the clamping jaws clamp the lining and bend the lining inwardly until the circumscribed circle of the plurality of clamping jaws is smaller than the inner diameter of the measuring tube; Step S3: The moving mechanism drives the clamping mechanism to approach the rotating mechanism, so that the clamping claws extend into the measuring tube and deliver the liner into the measuring tube; the clamping claws are controlled to be withdrawn one by one, so that the liner remains in the measuring tube; Step S4: The centering assembly further reduces the distance between the clamping claw and the axis of the centering assembly, and the moving mechanism drives the clamping mechanism closer to the rotating mechanism, so that the clamping claw and the centering assembly extend into the liner; the rotating mechanism drives the measuring catheter to rotate, and the centering assembly increases the distance between the clamping claw and the axis of the centering assembly, and uses the clamping claw to squeeze the liner; Step S5: The moving mechanism drives the clamping mechanism away from the rotating mechanism, removes the assembled liner measuring tube, and repeats steps S1 to S4.

8. The method for assembling an electromagnetic flowmeter according to claim 7, characterized in that: The heating temperature of the lining in step S2 is 100-120°C.

Images