Magnetic fluid coupling assembly tool

Abstract

The invention relates to the technical field of coupler assembly, and discloses a magnetofluid coupler assembly tool which comprises a base. The guide rods in the guide cover accurately correspond to the threaded holes in the cover plate, after the cover plate is attached to the coupler shell, when the driving rotary disc drives the shell to rotate till the threaded holes are aligned, the guide rods can be automatically and vertically inserted to achieve positioning, the problems that in traditional assembly, threaded holes are difficult to align, and deviation is prone to occurring are effectively solved, and the assembly efficiency is improved. The assembly position precision of the cover plate and the shell is ensured, and the overall assembly quality is improved; after positioning is completed, the pressing plate only needs to be pushed continuously, automatic separation of the guide rod and the threaded hole can be achieved under the guiding effect of the pressing arm, the positioning component does not need to be disassembled manually, meanwhile, after the pressing plate moves downwards continuously, the pressure relief assembly can automatically complete pressure relief and unlocking operation of the force storage cover, the whole assembling-positioning-unlocking process is coherent and smooth, and the operation difficulty is reduced.

Description

Technical Field

[0001] This invention belongs to the field of coupling assembly technology, and more specifically, relates to a magnetic fluid coupling assembly fixture. Background Technology

[0002] Magnetorheological fluid couplings, as highly efficient transmission components, are widely used in various power transmission systems. Their assembly quality directly affects transmission accuracy, stability, and service life. In the assembly process of magnetorheological fluid couplings, the assembly of the cover plate and the coupling housing is one of the core procedures. The threaded holes of both must be precisely aligned before subsequent tightening can be completed. Therefore, the positioning accuracy of the threaded holes is a key factor determining the assembly quality.

[0003] Existing tooling for assembling magnetohydrodynamic couplings often results in misalignment or displacement of the threaded holes when aligning and positioning the cover plate with the threaded holes of the coupling housing due to the inefficiency of the threaded hole specifications. This requires repeated adjustments to the relative positions of the two parts to realign them, significantly increasing the complexity of the assembly process. Furthermore, misalignment and displacement can reduce assembly accuracy, thereby affecting the transmission performance of the magnetohydrodynamic coupling and potentially causing malfunctions during operation.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A magnetohydrodynamic coupling assembly fixture includes a base.

[0006] A turntable is rotatably mounted on the base, and a coupling housing is mounted on the turntable. A pressure plate is vertically slidably mounted on the base, and a pressing cover is inserted into the bottom of the pressure plate. A power storage cover is installed inside the pressing cover, and a top rod is slidably mounted inside the power storage cover. When pressure is applied to the inside of the power storage cover and the top rod is slid outward, the cover plate is clamped and positioned. A pressure arm is rotatably mounted on the side wall of the pressing cover. One end of the pressure arm is slidably connected to the pressure plate, and the other end of the pressure arm is slidably provided with a guide cover that is vertically slidably connected to the pressure plate. A guide rod is inserted into the guide cover, and the guide rod corresponds to the threaded hole of the cover plate. When the cover plate is in contact with the coupling housing, the coupling housing is driven to rotate until the cover plate corresponds to the threaded hole of the coupling housing. Then, the guide rod is vertically inserted inside to position the cover plate and the coupling housing. The pressure plate is further pushed. Under the guidance of the pressure arm, the guide rod separates from the threaded hole, which is convenient for subsequent installation. The pressure plate is equipped with a pressure relief component at its bottom. When the pressure plate continues to move downward, the pressure accumulator automatically releases pressure, completing the unlocking operation.

[0007] In a preferred embodiment of the present invention, the base is in the shape of a boss, and an anti-slip groove is provided at the bottom of the base. A countersunk groove is provided on the base, and a drive motor is embedded inside the countersunk groove. A transmission shaft is installed at the output end of the drive motor, and the output end of the transmission shaft is connected to the turntable. A fixing block is installed on the turntable, and a clamping plate is installed on the fixing block by bolts. The clamping plate is clamped on the outer wall of the coupling housing.

[0008] In a preferred embodiment of the present invention, a pair of assembly electric push rods are installed on the base, and a connecting plate is installed at the output end of the assembly electric push rods. The end of the connecting plate is connected to the top of the pressure plate.

[0009] In a preferred embodiment of the present invention, an outer cover is installed at the four corners of the accumulator, and a top rod is movably installed through the outer cover. A piston is installed at one end of the top rod and is installed on the side wall of the outer cover. A ball bearing is installed at the other end of the top rod. A connecting pipe is installed on the side wall of the accumulator, and the connecting pipe passes through the pressing cover. The end of the connecting pipe is connected to the gas delivery assembly, and a valve is installed on the connecting pipe.

[0010] In a preferred embodiment of the present invention, a limiting protrusion is installed inside the outer cover. The limiting protrusion is annular. A return spring is sleeved on the outer wall of the top rod inside the outer cover. One end of the return spring is engaged with the inner wall of the outer cover, and the other end of the return spring is engaged with the piston. The return spring is used to ensure that the piston sidewall is in contact with the surface of the limiting protrusion under the initial pressure of the accumulator.

[0011] In a preferred embodiment of the present invention, a sliding cavity is provided inside the guide cover, and a baffle is slidably disposed inside the sliding cavity. A guide rod is installed at the bottom of the baffle, and the end of the guide rod is chamfered. A compression spring is engaged between the top of the baffle and the inner wall of the sliding cavity. The compression direction of the compression spring and the movement direction of the guide rod are both on the same straight line. The compression spring ensures that the guide rod always has a downward sliding force. An insert rod is inserted into the guide cover, and the top of the insert rod is mounted on a pressure plate.

[0012] In a preferred embodiment of the present invention, a connecting frame is installed at one end of the pressure arm. The connecting frame is U-shaped and is inserted into the side wall of the guide cover. A strip groove is provided on the connecting frame, and a sliding rod is slidably arranged on the strip groove. The sliding rod is slidably connected to the side wall of the guide cover.

[0013] In a preferred embodiment of the present invention, a fixed seat is rotatably mounted on the pressure arm, the fixed seat is mounted on the side wall of the pressing cover, a slot is formed on the pressure arm, a protrusion is slidably arranged on the slot, a pressure rod is mounted on the protrusion, and the top of the pressure rod is mounted on the bottom of the pressure plate.

[0014] In a preferred embodiment of the present invention, the pressure relief assembly includes a positioning rod, the bottom of which is movably inserted into the pressing cover and the accumulating cover, and a positioning plate is installed at the bottom of the positioning rod. The cross-sectional area of ​​the positioning plate is larger than that of the positioning rod. A positioning spring is sleeved on the side wall of the positioning rod. One end of the positioning spring is engaged with the side wall of the pressing cover, and the other end of the positioning spring is engaged with the bottom of the pressure plate. The positioning spring is used to drive the accumulating cover to fit against the positioning plate.

[0015] In a preferred embodiment of the present invention, the positioning rod is provided with an exhaust chamber, the top of the exhaust chamber is provided with a plurality of pairs of exhaust holes, the bottom of the exhaust chamber is provided with an air inlet hole, the air inlet hole is conical, a sealing plug is provided on the air inlet hole, a fixing rod is installed at the bottom of the sealing plug, and the end of the fixing rod is installed on the power storage cover.

[0016] Compared with the prior art, the present invention has the following advantages: This invention achieves precise alignment between the guide rod inside the guide cover and the threaded hole of the cover plate. After the cover plate and the coupling housing are fitted together, the drive turntable rotates the housing until the threaded hole is aligned. At this point, the guide rod can automatically insert vertically to achieve positioning, effectively solving the problems of difficult threaded hole alignment and easy misalignment in traditional assembly. This ensures the assembly position accuracy of the cover plate and the housing and improves the overall assembly quality. After positioning, it is only necessary to continue pushing the pressure plate. Under the guidance of the pressure arm, the guide rod can be automatically separated from the threaded hole without the need for manual disassembly of the positioning component. At the same time, as the pressure plate continues to move downward, the pressure relief component can automatically complete the pressure relief and unlocking operation of the accumulator. The entire assembly-positioning-unlocking process is smooth and seamless, reducing the difficulty of operation.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 A 3D drawing of a magnetohydrodynamic coupling assembly fixture; Figure 2 A side view of a magnetohydrodynamic coupling assembly fixture; Figure 3 A turntable assembly drawing for a magnetohydrodynamic coupling assembly fixture; Figure 4 A partial view of an assembly fixture for a magnetohydrodynamic coupling; Figure 5 An assembly drawing of a cover plate for a magnetohydrodynamic coupling assembly fixture; Figure 6 A cross-sectional view of the press cover of a magnetohydrodynamic coupling assembly fixture; Figure 7A tooling for assembling a magnetohydrodynamic coupling Figure 6 Enlarged view of point A in the middle; Figure 8 A cross-sectional view of the accumulator housing of a magnetohydrodynamic coupling assembly fixture; Figure 9 A tooling for assembling a magnetohydrodynamic coupling Figure 8 Enlarged view of section B in the middle.

[0019] In the picture: 1. Base; 11. Turntable; 111. Drive motor; 112. Countersunk groove; 113. Drive shaft; 114. Clamping plate; 115. Fixing block; 116. Coupling housing; 12. Pressure plate; 121. Connecting plate; 122. Assembly electric push rod; 13. Pressing cover; 131. Energy storage cover; 132. Connecting pipe; 133. Outer cover; 134. Limiting protrusion; 135. Piston; 136. Push rod; 137. Ball bearing; 138. Return spring; 14. Cover plate; 2. Guide cover; 21. Guide rod; 211. Baffle; 212. Slide cavity; 213. Compression spring; 214. Insert rod; 22. Connecting frame; 221. Strip groove; 222. Slide rod; 223. Pressure arm; 224. Fixing seat; 225. Slot; 226. Pressure rod; 227. Protrusion; 3. Positioning rod; 31. Positioning plate; 311. Positioning spring; 32. Exhaust chamber; 321. Exhaust hole; 322. Air inlet; 323. Sealing plug; 324. Fixing rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0021] Example 1: like Figures 1 to 9 As shown, a magnetohydrodynamic coupling assembly fixture includes a base 1.

[0022] A turntable 11 is rotatably mounted on the base 1. A coupling housing 116 is mounted on the turntable 11. A pressure plate 12 is vertically slidably mounted on the base 1. A pressing cover 13 is inserted into the bottom of the pressure plate 12. A power storage cover 131 is installed inside the pressing cover 13. A push rod 136 is slidably mounted inside the power storage cover 131. When pressure is applied to the inside of the power storage cover 131 and the push rod 136 is slid outward, it clamps and positions the cover plate 14. A pressure arm 223 is rotatably mounted on the side wall of the pressure cover 13. One end of the pressure arm 223 is slidably connected to the pressure plate 12, and the other end of the pressure arm 223 is slidably provided with a guide cover 2 that is vertically slidably connected to the pressure plate 12. A guide rod 21 is inserted into the guide cover 2, and the guide rod 21 corresponds to the threaded hole of the cover plate 14. When the cover plate 14 is in contact with the coupling housing 116, the coupling housing 116 is driven to rotate until the cover plate 14 corresponds to the threaded hole of the coupling housing 116. Then, the guide rod 21 is vertically inserted inside, positioning the cover plate 14 and the coupling housing 116, and the pressure plate 12 continues to be pushed. Under the guidance of the pressure arm 223, the guide rod 21 separates from the threaded hole, which is convenient for later installation. A pressure relief component is installed at the bottom of the pressure plate 12. When the pressure plate 12 continues to move downward, the pressure storage cover 131 automatically releases pressure and completes the unlocking operation.

[0023] like Figures 1 to 9 As shown, in a specific embodiment, the base 1 is in the shape of a boss, and an anti-slip groove is provided at the bottom of the base 1. A countersunk groove 112 is provided on the base 1, and a drive motor 111 is embedded inside the countersunk groove 112. A transmission shaft 113 is installed at the output end of the drive motor 111, and the output end of the transmission shaft 113 is connected to the turntable 11. A fixing block 115 is installed on the turntable 11, and a clamping plate 114 is installed on the fixing block 115 by bolts. The clamping plate 114 is clamped on the outer wall of the coupling housing 116. The boss-shaped base 1 enhances the overall structural stability, the anti-slip groove at the bottom prevents the tooling from shaking during operation, the countersunk groove 112 allows for the embedded installation of the drive motor 111, saving space and protecting the motor, the drive motor 111 can stably drive the turntable 11 to rotate through the transmission shaft 113, and the clamping plate 114 connected to the fixing block 115 by bolts can firmly clamp the coupling housing 116, ensuring that the housing does not shift during assembly.

[0024] like Figures 1 to 9 As shown, furthermore, a pair of electric actuators 122 are mounted on the base 1. A connecting plate 121 is mounted on the output end of each electric actuator 122, and the end of the connecting plate 121 is connected to the top of the pressure plate 12. The pair of electric actuators 122 provide symmetrical and stable driving force, ensuring that the pressure plate 12 is subjected to uniform force and does not tilt when sliding vertically. The connecting plate 121 achieves a stable connection between the electric actuators and the pressure plate 12, making power transmission more reliable and improving the accuracy and stability of the pressure plate 12's movement.

[0025] like Figures 1 to 9As shown, furthermore, outer covers 133 are installed at the four corners of the accumulator 131. A push rod 136 is movably inserted through the outer cover 133. A piston 135 is installed at one end of the push rod 136, which is mounted on the side wall of the outer cover 133. A ball bearing 137 is installed at the other end of the push rod 136. A connecting pipe 132 is installed on the side wall of the accumulator 131, penetrating the pressing cover 13. The end of the connecting pipe 132 is connected to the gas delivery assembly, and a valve is installed on the connecting pipe 132. The outer covers 133 at the four corners provide stable guidance for the push rod 136. The piston 135 ensures that the pressure inside the accumulator 131 is effectively converted into the driving force of the push rod 136. The ball bearing 137 at the end of the push rod 136 reduces friction and avoids damage to the cover plate 14 when clamping it. The connecting pipe 132 connects the gas delivery assembly to the accumulator 131. The valve facilitates pressure control, improving the controllability and safety of the clamping operation.

[0026] like Figures 1 to 9 As shown, furthermore, a limiting protrusion 134 is installed inside the outer cover 133. The limiting protrusion 134 is annular. A return spring 138 is sleeved on the outer wall of the push rod 136 inside the outer cover 133. One end of the return spring 138 is engaged with the inner wall of the outer cover 133, and the other end is engaged with the piston 135. The return spring 138 is used to ensure that the side wall of the piston 135 is in contact with the surface of the limiting protrusion 134 under the initial pressure of the accumulator 131. The annular limiting protrusion 134 can precisely limit the piston 135, ensuring that the position of the push rod 136 is uniform in the initial state. The return spring 138 can quickly drive the piston 135 and the push rod 136 to return to their original positions after pressure is released, preparing for the next clamping, thus improving the reusability and reset accuracy of the tooling.

[0027] Example 2: The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, the guide cover 2 has a sliding cavity 212 inside, and a baffle 211 is slidably arranged inside the sliding cavity 212. A guide rod 21 is installed at the bottom of the baffle 211, and the end of the guide rod 21 is chamfered. A compression spring 213 is engaged between the top of the baffle 211 and the inner wall of the sliding cavity 212. The compression direction of the compression spring 213 and the movement direction of the guide rod 21 are both in the same straight line. The compression spring 213 ensures that the guide rod 21 always has a downward sliding force. An insert rod 214 is inserted into the guide cover 2, and the top of the insert rod 214 is installed on the pressure plate 12. The sliding cavity 212 provides a stable sliding space for the baffle 211 and the guide rod 21. The chamfered guide rod 21 facilitates precise insertion into the threaded hole. The baffle 211 can effectively bear the elastic force of the compression spring 213. The compression spring 213 in the same direction ensures that the guide rod 21 always has downward pressure, improving the alignment accuracy. The insert rod 214 realizes a stable connection between the guide cover 2 and the pressure plate 12, ensuring synchronous action.

[0028] like Figures 1 to 9 As shown in the specific embodiment, a connecting frame 22 is installed at one end of the pressure arm 223. The connecting frame 22 is U-shaped and is inserted into the side wall of the guide cover 2. A strip groove 221 is provided on the connecting frame 221, and a sliding rod 222 is slidably arranged on the strip groove 221. The sliding rod 222 is slidably connected to the side wall of the guide cover 2. The U-shaped connecting frame 22 increases the contact area with the guide cover 2, improving the connection stability. The cooperation between the strip groove 221 and the sliding rod 222 realizes the sliding and rotation linkage between the pressure arm 223 and the guide cover 2, making the lifting and lowering action of the guide cover 2 more stable and smooth, and ensuring the precise separation of the guide rod 21.

[0029] like Figures 1 to 9 As shown, a fixed seat 224 is rotatably mounted on the pressure arm 223. The fixed seat 224 is installed on the side wall of the pressing cover 13. A slot 225 is formed on the pressure arm 223, and a protrusion 227 is slidably arranged on the slot 225. A pressure rod 226 is installed on the protrusion 227, and the top of the pressure rod 226 is installed on the bottom of the pressure plate 12. The fixed seat 224 provides a stable rotation fulcrum for the pressure arm 223, ensuring accurate force transmission direction. The cooperation between the slot 225 and the protrusion 227 converts the vertical movement of the pressure rod 226 into the rotation of the pressure arm 223. The pressure rod 226 realizes the power transmission between the pressure plate 12 and the pressure arm 223. The overall structure smoothly converts the downward movement of the pressure plate 12 into the upward movement of the guide cover 2.

[0030] Example 3: The difference between the above embodiments and this embodiment is that: Figures 1 to 9 As shown, the pressure relief assembly includes a positioning rod 3. The bottom of the positioning rod 3 is movably inserted into the pressing cover 13 and the accumulating cover 131. A positioning plate 31 is installed at the bottom of the positioning rod 3. The cross-sectional area of ​​the positioning plate 31 is larger than that of the positioning rod 3. A positioning spring 311 is sleeved on the side wall of the positioning rod 3. One end of the positioning spring 311 is engaged with the side wall of the pressing cover 13, and the other end is engaged with the bottom of the pressure plate 12. The positioning spring 311 is used to drive the accumulating cover 131 to fit against the positioning plate 31. The positioning rod 3 enables precise docking between the pressure relief assembly and the pressing cover 13 and the accumulating cover 131. The larger cross-sectional area of ​​the positioning plate 31 increases the contact area with the accumulating cover 131, improving stability during pressure relief. The positioning spring 311 ensures that the accumulating cover 131 always fits against the positioning plate 31, providing a guarantee for the precise triggering of subsequent pressure relief actions.

[0031] like Figures 1 to 9As shown, in a specific embodiment, the positioning rod 3 has an exhaust chamber 32, the top of the exhaust chamber 32 has several pairs of exhaust holes 321, and the bottom of the exhaust chamber 32 has an air inlet 322. The air inlet 322 is conical, and a sealing plug 323 is provided on the air inlet 322. A fixing rod 324 is installed at the bottom of the sealing plug 323, and the end of the fixing rod 324 is installed on the accumulator 131. The exhaust chamber 32 provides a discharge channel for high-pressure gas. The multiple pairs of exhaust holes 321 accelerate the exhaust efficiency. The conical air inlet 322 and the sealing plug 323 work together to improve the sealing performance, ensuring that the pressure of the accumulator 131 is stable in the non-depressurization state. The fixing rod 324 realizes the synchronous action of the sealing plug 323 and the accumulator 131, ensuring accurate depressurization timing.

[0032] The implementation principle of the magnetohydrodynamic coupling assembly fixture of the present invention is as follows: First, the workpiece is initially positioned and clamped. The coupling housing 116 to be assembled is placed on the turntable 11 of the base 1, and clamped and fixed by the clamping plate 114 connected to the fixing block 115 on the turntable 11, ensuring that the coupling housing 116 will not shift during assembly. At the same time, the anti-slip groove at the bottom of the base 1 enhances the overall stability and prevents the tooling from shaking during operation. Then, the cover plate 14 to be assembled with the coupling housing 116 is placed in the preset position. At this time, the pressure accumulator 131 at the bottom of the pressing cover 13 initially adheres to the cover plate 14. The gas delivery assembly initially pressurizes the inside of the pressure accumulator 131 through the connecting pipe 132. The high-pressure gas pushes the piston 135 in the outer cover 133 to move, driving the push rod 136 to slide outward. The ball 137 at the end of the push rod 136 contacts the cover plate 14 and forms a stable clamp, completing the pneumatic clamping and positioning of the cover plate 14, preparing it for subsequent assembly.

[0033] The electric push rod 122 is mounted on the base 1. The output end of the electric push rod 122 drives the pressure plate 12 to slide vertically downward through the connecting plate 121. Due to the elastic force of the positioning spring 311, the pressure plate 12 will drive the pressing cover 13 to move down synchronously.

[0034] As the pressure plate 12 continues to move downward, the cover plate 14 moves downward synchronously under the clamping action of the top rod 136 until the cover plate 14 is in contact with the surface of the coupling housing 116 on the turntable 11. At this time, if the threaded hole on the cover plate 14 is not aligned with the threaded hole on the coupling housing 116, the guide rod 21 in the guide cover 2 will be compressed due to the obstruction of the coupling housing 116, and the baffle 211 at the top of the guide rod 21 will move upward in the sliding cavity 212 and compress the compression spring 213. Then, the drive motor 111 in the countersunk groove 112 is started. The drive motor 111 drives the turntable 11 to rotate through the transmission shaft 113. The turntable 11 drives the coupling housing 116 to rotate synchronously. When the threaded hole of the coupling housing 116 rotates to align with the threaded hole of the cover plate 14, the compression spring 213 releases its elastic force to push the baffle 211 down, which drives the guide rod 21 to be vertically inserted into the corresponding threaded hole, thus completing the positioning of the cover plate 14 and the coupling housing 116 and providing precise guidance for subsequent bolt installation.

[0035] After positioning is complete, continue to control the assembly electric push rod 122 to push the pressure plate 12 downward. At this time, the cover plate 14 and the coupling housing 116 are in contact and positioned. The pressing cover 13 remains stationary. The pressure rod 226 at the bottom of the pressure plate 12 moves downward with the pressure plate 12. The protrusion 227 on the pressure rod 226 slides in the slot 225 of the pressure arm 223, causing the pressure arm 223 to rotate around the fixed seat 224 on the side wall of the pressing cover 13. The connecting bracket 22 at one end of the pressure arm 223 cooperates with the sliding rod 222 on the side wall of the guide cover 2 through the strip groove 221. During the rotation, it causes the guide cover 2 to move vertically upward relative to the pressure plate 12. The guide rod 21 then separates from the threaded hole to avoid interference with subsequent bolt installation.

[0036] As the pressure plate 12 continues to move downwards, it drives the positioning rod 3 to move downwards simultaneously. The pressure between the positioning plate 31 at the bottom of the positioning rod 3 and the accumulator 131 gradually increases, and the positioning spring 311 is further compressed. When the pressure plate 12 moves to the preset position, the air inlet 322 on the positioning rod 3 separates from the sealing plug 323 inside the accumulator 131. At this time, the high-pressure gas inside the accumulator 131 enters the exhaust chamber 32 through the air inlet 322 and is then discharged through the exhaust hole 321 at the top of the exhaust chamber 32, thus achieving automatic depressurization of the accumulator 131. After depressurization, the return spring 138 releases its elastic force to push the piston 135 to reset, driving the top rod 136 to retract and release the clamping and positioning of the cover plate 14. This completes the positioning, assembly, and unlocking operation of the entire cover plate 14 and the coupling housing 116, and subsequent finishing processes such as bolt tightening can be performed.

Claims

1. A magnetic fluid coupling assembly tool, comprising a base (1), characterized in that: a turntable (11) is rotatably mounted on the base (1), a coupling shell (116) is mounted on the turntable (11), a pressing plate (12) is vertically slidably arranged on the base (1), a pressing cover (13) is insertedly arranged at the bottom of the pressing plate (12), a force storage cover (131) is mounted inside the pressing cover (13), a jacking rod (136) is slidably arranged inside the force storage cover (131), and the jacking rod (136) is driven to slide outward when the pressure inside the force storage cover (131) is increased, so as to clamp and position the cover plate (14); a pressing arm (223) is rotatably mounted on the side wall of the pressing cover (13), one end of the pressing arm (223) is slidably connected with the pressing plate (12), the other end of the pressing arm (223) is slidably arranged with a guide cover (2) which is vertically slidably connected with the pressing plate (12), a guide rod (21) is insertedly arranged inside the guide cover (2), the guide rod (21) corresponds to the threaded hole of the cover plate (14), the coupling shell (116) is driven to rotate after the cover plate (14) is attached to the coupling shell (116), until the guide rod (21) is vertically inserted inside after the threaded hole of the cover plate (14) corresponds to the coupling shell (116), the position of the cover plate (14) and the coupling shell (116) is positioned, and the pressing plate (12) is continuously pushed, the guide rod (21) is separated from the threaded hole under the guidance of the pressing arm (223), which facilitates the later installation; a pressure relief assembly is mounted at the bottom of the pressing plate (12), the force storage cover (131) is automatically relieved when the pressing plate (12) continuously moves downward, and the unlocking operation is completed.

2. A magnetic fluid coupling assembly tool according to claim 1, wherein, The base (1) is in the shape of a boss, an anti-skid groove is formed at the bottom of the base (1), a countersunk groove (112) is formed on the base (1), a driving motor (111) is embeddedly arranged inside the countersunk groove (112), a transmission shaft (113) is mounted at the output end of the driving motor (111), the output end of the transmission shaft (113) is connected with the turntable (11), a fixed block (115) is mounted on the turntable (11), a clamping plate (114) is mounted on the fixed block (115) by bolts, and the clamping plate (114) is clamped on the outer side wall of the coupling shell (116).

3. A magnetic fluid coupling assembly tool as defined in claim 1, wherein, A pair of assembly electric push rods (122) are mounted on the base (1), a connecting plate (121) is mounted at the output end of the assembly electric push rod (122), and the connecting plate (121) is connected with the top of the pressing plate (12).

4. A magnetic fluid coupling assembly tool as defined in claim 1, wherein, The four corners of the force storage cover (131) are provided with outer covers (133), the outer covers (133) are movably provided with top rods (136) penetrating through the outer covers (133), one end of the top rod (136) is provided with a piston (135), the piston (135) is installed on the side wall of the outer cover (133), the other end of the top rod (136) is provided with a ball (137), the side wall of the force storage cover (131) is provided with a connecting pipe (132), the connecting pipe (132) penetrates through the pressing cover (13), the end of the connecting pipe (132) is connected with a gas conveying assembly, and the connecting pipe (132) is provided with a valve.

5. A magnetic fluid coupling assembly tool as defined in claim 4, wherein, The inner side of the outer cover (133) is provided with a limiting protrusion (134), the limiting protrusion (134) is annular, the outer side wall of the top rod (136) inside the outer cover (133) is provided with a reset spring (138) in a sleeved mode, one end of the reset spring (138) is clamped on the inner side wall of the outer cover (133), and the other end of the reset spring (138) is clamped on the piston (135), so that the reset spring (138) is used for guaranteeing that the side wall of the piston (135) is attached to the surface of the limiting protrusion (134) under the initial pressure of the force storage cover (131).

6. A magnetic fluid coupling assembly tool according to claim 1 wherein, The inner side of the outer cover (133) is provided with a limiting protrusion (134), the limiting protrusion (134) is annular, the outer side wall of the top rod (136) inside the outer cover (133) is provided with a reset spring (138) in a sleeved mode, one end of the reset spring (138) is clamped on the inner side wall of the outer cover (133), and the other end of the reset spring (138) is clamped on the piston (135), so that the reset spring (138) is used for guaranteeing that the side wall of the piston (135) is attached to the surface of the limiting protrusion (134) under the initial pressure of the force storage cover (131).

7. A magnetic fluid coupling assembly tool as defined in claim 1, wherein, The inner side of the outer cover (133) is provided with a limiting protrusion (134), the limiting protrusion (134) is annular, the outer side wall of the top rod (136) inside the outer cover (133) is provided with a reset spring (138) in a sleeved mode, one end of the reset spring (138) is clamped on the inner side wall of the outer cover (133), and the other end of the reset spring (138) is clamped on the piston (135), so that the reset spring (138) is used for guaranteeing that the side wall of the piston (135) is attached to the surface of the limiting protrusion (134) under the initial pressure of the force storage cover (131).

8. A magnetic fluid coupling assembly tool according to claim 1 wherein, The inner side of the outer cover (133) is provided with a limiting protrusion (134), the limiting protrusion (134) is annular, the outer side wall of the top rod (136) inside the outer cover (133) is provided with a reset spring (138) in a sleeved mode, one end of the reset spring (138) is clamped on the inner side wall of the outer cover (133), and the other end of the reset spring (138) is clamped on the piston (135), so that the reset spring (138) is used for guaranteeing that the side wall of the piston (135) is attached to the surface of the limiting protrusion (134) under the initial pressure of the force storage cover (131).

9. A magnetic fluid coupling assembly tool as defined in claim 1, wherein, The pressure relief assembly comprises a positioning rod (3), the bottom of the positioning rod (3) is movably inserted on a pressing cover (13) and a force storage cover (131), and a positioning plate (31) is installed on the bottom of the positioning rod (3), the cross-sectional area of the positioning plate (31) is larger than that of the positioning rod (3), a positioning spring (311) is sleeved on the side wall of the positioning rod (3), one end of the positioning spring (311) is clamped on the side wall of the pressing cover (13), and the other end of the positioning spring (311) is clamped on the bottom of the pressing plate (12), and the positioning spring (311) is used for driving the force storage cover (131) to be attached to the positioning plate (31).

10. A magnetic fluid coupling assembly tool as defined in claim 9, wherein, An exhaust cavity (32) is formed in the positioning rod (3), a plurality of pairs of exhaust holes (321) are arranged on the top of the exhaust cavity (32), an air inlet hole (322) is arranged on the bottom of the exhaust cavity (32), the air inlet hole (322) is tapered, a sealing plug (323) is arranged on the air inlet hole (322), a fixing rod (324) is installed on the bottom of the sealing plug (323), and the fixing rod (324) is installed on the force storage cover (131).

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