Torque limiter and method of assembly

Abstract

The invention relates to a torque limiter and an assembling method. The torque limiter comprises a connecting disc and a dual disc. The connecting disc comprises a first connecting disc and a second connecting disc; the dual disc is arranged between the first connecting disc and the second connecting disc; friction plates are arranged between the dual disc and the first connecting disc and / or between the dual disc and the second connecting disc; the dual disc is rotationally arranged relative to the connecting disc; a bolt piece is mounted between the mounting hole A of the first connecting disc and the mounting hole B of the second connecting disc in a penetrating manner; an elastic washer is arranged at one end of the bolt piece, and a combined locknut is mounted at the threaded end; the combined locknut comprises a convex nut and a concave nut which are engaged in a concave-convex manner; the device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] This invention relates to a torque limiter and its assembly method. Background Technology

[0002] Torque limiters can be categorized into built-in and external types based on whether they are integrated with the intermediate unit. Built-in torque limiters, due to structural limitations, require enlarged dimensions of components such as fiberglass to accommodate larger models. External torque limiters are mostly installed by riveting the friction plates onto the friction disc, requiring the friction disc to be placed vertically for installation, resulting in lower efficiency. Furthermore, the first and second connecting discs are fixed together using elastic pins, making installation difficult.

[0003] Existing torque limiters are located at high-speed rotation, and preventing loosening is a primary safety concern. Traditional methods of preventing loosening involve applying anti-loosening adhesive, but this is prone to failure in extremely cold conditions, and disassembly is extremely inconvenient when repairing or replacing friction plates.

[0004] Currently, the installation of friction plates by riveting involves complex processes, such as drilling, heating rivets, and riveting, resulting in high labor and time costs, high labor intensity, significant noise and vibration, and poor working conditions. The quality stability is highly dependent on the operator's skill level, which can easily lead to deformation (such as workpiece warping) and consistency issues. Riveting is not as flexible as bolt connections in automation and on-site construction.

[0005] When installing the first and second connecting discs, applying thread-locking adhesive to the bolt ends with nuts to prevent loosening is inefficient, difficult to disassemble, and prone to issues such as missed application or insufficient torque application during on-site construction, making it impossible to verify the results, resulting in poor performance.

[0006] Existing solutions rely on friction discs to increase roughness and friction with friction plates, resulting in poor surface roughness consistency and rivet eccentricity issues. Summary of the Invention

[0007] In general, the technical problem this invention aims to solve is to provide a torque limiter and its assembly method. This addresses issues such as poor consistency in riveting installation leading to unreliable friction plate fixation, rivet breakage due to shearing, and difficulty in disassembly. Furthermore, the invention employs a blind-hole elastic pin design when installing the first and second connecting discs, requiring precise hole alignment and pressing during installation. Additionally, the method of tightening bolts and then re-tightening nuts coated with thread-locking adhesive during connection can result in incomplete bolt degreasing, preventing the adhesive from curing properly. This leads to bolt loosening, slippage, reduced torque, and even failure during operation, ultimately preventing the wind turbine from operating normally and generating electricity.

[0008] To solve the above problems, the technical solution adopted by the present invention is as follows: To improve the anti-loosening effect, a torque limiter includes a connecting plate and a dual plate; the connecting plate includes a first connecting plate and a second connecting plate; The dual disk is positioned between the first connecting disk and the second connecting disk; Friction plates are provided between the dual disk and the first connecting disk and / or between the dual disk and the second connecting disk; The dual disk is rotated relative to the connecting disk; A bolt is inserted between the mounting hole A of the first connecting plate and the mounting hole B of the second connecting plate; An elastic washer is provided on one end of the bolt and a combination anti-loosening nut is installed on the threaded end; Combination lock nuts include a convex nut and a concave nut with a convex-concave interlocking mechanism.

[0009] As a further improvement to the above technical solution: To achieve the anti-loosening effect, shearing holes are provided on the end faces of the first connecting plate and the second connecting plate, respectively; Shear screws pass through the friction plate and are installed in the corresponding shear holes; a deformation shear pin is inserted between the first connecting plate and the second connecting plate. The deformation shear pin has a central through hole; A side slot communicating with the central through hole is provided on the side wall of the deformation shear pin.

[0010] The convex nut has a male external cone; The concave nut has a female inner conical groove that matches the male external conical surface; The male outer cone and the female inner cone groove are eccentrically positioned.

[0011] In order to achieve a sealing effect and provide support after wear, an O-ring B is provided at the joint between the first connecting plate and the second connecting plate; An O-ring A is provided between the mating surface of the first connecting plate and the dual plate and / or between the mating surface of the second connecting plate and the dual plate.

[0012] A limiting position for fixing O-ring B is provided on the first connecting plate and / or the second connecting plate; A protrusion C is provided on the first connecting plate and / or a protrusion B is provided on the second connecting plate, for fixing the corresponding O-ring A; The friction plate is located between O-ring B and O-ring A.

[0013] To facilitate connection, positioning grooves are distributed on the outer periphery of the first connecting plate.

[0014] To improve the friction effect, an annular groove B is provided on the first connecting plate; An annular groove A is provided on the second connecting plate; Groove B and / or groove A are used to place the friction plate; To reduce the shear force on the bolts and thus transfer the shear force to the connecting disc, the bolts are tightened to the mounting hole A and / or the bolts are tightened to the mounting hole B. The bolts are provided with elastic Archimedes springs and / or elastic expansion sleeves.

[0015] To facilitate adjustment of the friction fit clearance, an arc-shaped pad B is placed in the groove B; A curved pad A is placed in groove A; The thickness of either curved pad B or curved pad A is now adjusted and fitted. The annular groove A on the outer side of the first connecting plate; A process receiving plate A is provided in the annular groove A; A process receiving plate B is provided on the outside of the second connecting plate; Process tray A and process tray B have the same structure; Bolt holes are distributed on process receiving plate A to correspond to mounting hole A; An open spring sleeve is provided in process receiving plate A; Install bolts on the open spring clip; All bolted parts are tightened to the corresponding process connectors A and B via open spring clips; The open spring sleeve has a stepped portion that fits tightly with the neck of the bolt; The step section has a process opening; The step section has several elastic claws; The flexible claw has feet at its end; To achieve a tight fit, the bolt has a threaded middle section and a threaded end. Side slots are provided on the bolt components; The root connecting piece of the Archimedes shrapnel is engaged in the side slot; Archimedes shrapnel consists of a first shrapnel and a second shrapnel, which are separated by a process of slotting. The first and second spring pieces correspond to mounting holes A and B, respectively; Mounting hole A and mounting hole B are tapered holes; The large end of the tapered hole in mounting hole A fits into the large end of the tapered hole in mounting hole B. To achieve force balance, process connector B is positioned between the convex nut and the concave nut, or between the convex nut and the second connecting plate.

[0016] To improve existing assembly processes, a method for assembling a torque limiter is provided; the method includes the following steps: S1, degreasing and dust removal, cleaning the connecting plate and the mating plate; S2, friction plates are installed on the connecting plate using anti-shear screws; S3, Install deformation anti-shear pins on the first connecting plate; S4, install O-rings B on the first connecting plate and the second connecting plate respectively; S5, the dual disk is placed on the first connecting disk; In S2, after trial assembly, adjust the thickness of the arc pad B or arc pad A on the connecting plate. In S3, the first connecting plate and the second connecting plate are respectively heat-fitted with deformation anti-shear pins; S6, insert O-ring B, and install the second connecting plate; S6, Install the bolts and tighten the locking nuts; In S6, a convex nut is installed on the bolt, and then the torque is calibrated before installing a concave nut.

[0017] In S6, process connector A is pre-installed on the bolt, and process connector B passes through the second connecting plate; Archimedes springs are installed on the bolt components; Install open spring sleeves on the through holes on process connector A and process connector B; proceed with hot or cold fitting.

[0018] The friction plates of this invention are installed using anti-shear screws, improving installation efficiency and facilitating later maintenance and replacement. The first and second connecting discs are installed using deformation anti-shear pins. During installation, the deformation anti-shear pins do not require pressing the upper and lower connecting discs in; they can be manually or automatically inserted into the holes, greatly improving work efficiency. The second connecting disc has a shape-positioning mounting groove, avoiding the difficulties of manually aligning the holes and the need for pressing in during the assembly of the first and second connecting discs. After the bolts are inserted into the holes of the first and second connecting discs, the combined nut is screwed onto the bolts. The inner and outer conical surfaces of the combined nut tighten and deform, increasing bolt friction and preventing loosening. This solves the problems of threadlocker curing time and the low efficiency of manual application. This invention is rationally designed, low-cost, robust, durable, safe, reliable, simple to operate, time-saving, labor-saving, cost-effective, compact in structure, and easy to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first connecting disk structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the second connecting disk structure of the present invention.

[0021] Figure 3 This is a partial structural diagram of the second connecting disk of the present invention.

[0022] Figure 4 This is a schematic diagram of a partial structure of the dual disk of the present invention.

[0023] Figure 5 This is a schematic diagram of the convex nut structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the bolt structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the dual disk structure of the present invention.

[0026] Figure 8 This is a schematic diagram of the first connecting disk structure of the present invention.

[0027] Figure 9 This is a schematic diagram of the open spring clip structure of the present invention.

[0028] Figure 10 This is a schematic diagram of the root connecting piece structure of the present invention.

[0029] The components include: 1. First connecting plate; 2. Friction plate; 3. Mating plate; 4. Second connecting plate; 5. Shear screw; 6. Elastic washer; 7. Bolt; 8. Deformation shear pin; 9. O-ring A; 10. O-ring B; 11. Convex nut; 12. Concave nut; 13. Positioning groove; 14. Shear hole; 15. Groove A; 16. Groove B; 17. Arc-shaped pad A; 18. Arc-shaped pad B; 19. Center through hole; 20. Side slot; 21. Mounting hole B; 22. Mounting... Hole A; 23. Combined anti-loosening nut; 24. Protrusion B; 25. Protrusion C; 26. Female inner conical groove; 27. Male outer conical truncated cone; 28. Process receiving plate A; 29. ​​Process receiving plate B; 30. Opening spring sleeve; 31. Stepped part; 32. Process opening; 33. Elastic claw; 34. Base foot; 35. Side slot; 36. Archimedes spring; 37. Root connecting piece; 38. First spring; 39. Second spring; 40. Process slot; 41. Limiting point; 42. Annular groove A. Detailed Implementation

[0030] like Figure 1-10 As shown, the torque limiter in this embodiment includes a connecting plate and a dual plate 3; the connecting plate includes a first connecting plate 1 and a second connecting plate 4; The dual disk 3 is disposed between the first connecting disk 1 and the second connecting disk 4; Friction plates 2 are provided between the dual disk 3 and the first connecting disk 1 and / or between the dual disk 3 and the second connecting disk 4; the connecting disk and the dual disk 3 are respectively connected to the power output and the power input, thereby realizing the power output.

[0031] The dual disk 3 is rotated relative to the connecting disk; A bolt 7 is inserted between the mounting hole A22 of the first connecting plate 1 and the mounting hole B21 of the second connecting plate 4; An elastic washer 6 is provided on one end of the bolt 7 and a combined anti-loosening nut 23 is installed on the threaded end; thereby achieving connection and fixation.

[0032] The combined anti-loosening nut 23 includes a convex nut 11 and a concave nut 12 that engage with each other through friction.

[0033] Shearing holes 14 are respectively provided on the end faces of the first connecting plate 1 and the second connecting plate 4; An anti-shear screw 5 passes through the friction plate 2 and is installed in the corresponding shear hole 14; a deformation anti-shear pin 8 is inserted between the first connecting plate 1 and the second connecting plate 4. Deformation shear pin 8 has a central through hole 19; A side slot 20 communicating with the central through hole 19 is provided on the side wall of the deformation anti-shear pin 8. It cleverly adopts a cotter pin structure, which enters the hole by extrusion and uses the elasticity of the opening to open the cotter pin and provide support, thereby transferring the shear force to the connecting plate and avoiding a single pin bearing all the shear force.

[0034] The convex nut 11 has a male external cone 27; The concave nut 12 has a female inner conical groove 26 that is adapted to the conical surface of the male external conical truncated cone 27; The male outer cone 27 and the female inner cone groove 26 are eccentrically positioned, and the eccentricity increases the friction.

[0035] An O-ring B10 is provided at the joint between the first connecting plate 1 and the second connecting plate 4; An O-ring A9 is provided between the mating surface of the first connecting plate 1 and the mating surface of the dual plate 3 and / or between the mating surface of the second connecting plate 4 and the mating surface of the dual plate 3 to achieve sealing and, at the same time, to provide rotational support after wear.

[0036] A limiting point 41 for fixing the O-ring B10 is provided on the first connecting plate 1 and / or the second connecting plate 4; The first connecting plate 1 is provided with a protrusion C25 and / or the second connecting plate 4 is provided with a protrusion B24, for fixing the corresponding O-ring A9; Friction piece 2 is located between O-ring B10 and O-ring A9.

[0037] Positioning grooves 13 are distributed on the outer periphery of the first connecting plate 1.

[0038] An annular groove B16 is provided on the first connecting plate 1; An annular groove A15 is provided on the second connecting plate 4; Groove B16 and / or groove A15 are used to place friction plate 2, thereby facilitating the installation of the sealing ring.

[0039] Bolt 7 is tightened into mounting hole A22 and / or bolt 7 is tightened into mounting hole B21; thereby transmitting torque and shear force to the bolt and connecting plate.

[0040] A few bolt pieces 7 are provided with elastic Archimedes 36 and / or a few bolt pieces 7 are provided with elastic expansion sleeves to fill the gap between the bolt and the through hole, thereby realizing the transmission of force.

[0041] A curved pad B18 is placed in the groove B16; A curved pad A17 is placed in the groove A15; The thickness of the curved pad B18 or curved pad A17 is now adjusted; thereby adjusting the gap at the friction plate.

[0042] In order to better realize the transmission of torque and shear force, realize that all bolts share the shear force, and absorb the vibration of individual bolts, the annular groove A42 is located on the outer side of the first connecting plate 1. A process receiving plate A28 is provided in the annular groove A42 to improve the process without affecting the existing transfer structure; A process receiving plate B29 is provided on the outer side of the second connecting plate 4; Process connector A28 and process connector B29 have the same structure; they ensure the transmission of force between bolts without generating torque through the two process connectors.

[0043] Bolt holes are distributed on the process receiving plate A28 to correspond to the mounting holes A22; An open spring sleeve 30 is provided in the process receiving plate A28; Bolt 7 is fitted onto the open spring sleeve 30; All bolts 7 are tightened to the corresponding process connectors A28 and B29 via open spring sleeves 30; The open spring sleeve 30 has a stepped portion 31 that fits tightly with the neck of the bolt member 7; The step portion 31 has a process opening 32; The stepped portion 31 has several elastic claws 33; The elastic claw 33 has a foot 34 at its end, which facilitates axial clamping, allowing the elastic claw to open and achieve elastic contact. The elastic claw compresses the bolt to achieve a tight connection. Bolt component 7 has a threaded section in the middle and a threaded end; A side slot 35 is provided on the bolt part 7; The root connecting piece 37 of the Archimedes spring 36 is engaged in the side slot 35; Archimedes shrapnel 36 has a first shrapnel 38 and a second shrapnel 39 divided by a process groove 40; The first spring clip 38 and the second spring clip 39 correspond to mounting holes A22 and B21, respectively; Mounting holes A22 and B21 are tapered holes; The large end of the tapered hole of mounting hole A22 fits with the large end of the tapered hole of mounting hole B21; The process connector B29 is disposed between the convex nut 11 and the concave nut 12 or between the convex nut 11 and the second connecting plate 4, preferably between the convex nut 11 and the concave nut 12, so as to avoid friction with the connecting plate. Of course, the process connector B29 does not affect the male and female mating of the convex nut 11 and the concave nut 12.

[0044] The process connector A28 is positioned between the bolt head and the washer to avoid the influence of friction with the connecting plate.

[0045] The assembly method of the torque limiter in this embodiment is used to assemble a torque limiter; the method includes the following steps; S1, degreasing and dust removal, cleaning the connecting plate and the mating plate 3; S2, the friction plate 2 is installed on the connecting plate by the anti-shear screw 5; S3, Install deformation anti-shear pin 8 on the first connecting plate 1; S4, install O-rings B10 on the first connecting plate 1 and the second connecting plate 4 respectively; S5, the dual disk 3 is placed on the first connecting disk 1; In S2, after trial assembly, adjust the thickness of the arc pad B18 or arc pad A17 on the connecting plate. In S3, the first connecting plate 1 and the second connecting plate 4 are respectively heat-fitted with deformation anti-shear pins 8; S6, insert O-ring B10, install the second connecting plate 4; S6, Install bolt 7 and tighten combination lock nut 23; In S6, a convex nut 11 is installed on the bolt 7, and then the torque is calibrated and the concave nut 12 is installed with torque applied.

[0046] like Figure 1-7 The torque limiter of this embodiment includes a first connecting plate 1, a second connecting plate 4, a mating plate 3, a friction plate 2, an anti-shear screw 5, a combined anti-loosening nut 23, a bolt 7, a deformation anti-shear pin 8, and an O-ring seal.

[0047] The combination anti-loosening nut 23 includes at least a convex nut 11 and a concave nut 12. During installation, the convex nut 11 is at the bottom and the concave nut 12 is at the top. During installation, the torque limiter consists of, in sequence, the first connecting disc, the friction plate, the mating disc, the second connecting disc, the bolt, the washer, and the combination lock nut.

[0048] The first connecting plate assembly is provided with pin holes and threaded holes. The friction plate and the surface of the first connecting plate do not require special roughening or roughening treatment. Align the friction plate mounting hole with the friction plate mounting hole of the first connecting plate, insert the anti-shear screw, and apply the torque design torque value.

[0049] On the first connecting plate, the friction plate is fixed to the first connecting plate by anti-shear screws. Multiple deformation anti-shear pins are arranged on the outside of the connecting plate. The anti-shear pins are specially designed to retain deformation, improve shear resistance, and buffer the vibration and impact of torque transmission.

[0050] The first connecting plate has a boss machined on it, and an O-ring seal is placed on the boss for easy installation without the need for fixing. After the friction plate wears, the compression of the seal increases, improving the internal sealing performance and reducing the risk of slippage torque failure caused by oil and water entering the interior.

[0051] The first connecting plate and the second connecting plate are connected by a deformation anti-shear pin. The deformation anti-shear pin has an opening, which improves the shear strength and makes installation simple without pressing.

[0052] The combination anti-loosening nut consists of a convex nut and a concave nut. During torque calibration, the convex nut is installed first. After the torque limiter is calibrated, the concave nut is installed. The convex nut has a conical surface with a certain angled boss, and the concave nut has a groove with a conical surface of the same angle. When installing the concave nut, the inner and outer conical surfaces engage, causing the inner conical surface to tighten, the nut and bolt to fit together, increasing friction. The outer conical surface expands, and the upper thread fits against the nut, increasing friction and achieving an anti-loosening effect. At the same time, the inner and outer conical surfaces fit together, and the upper and lower nuts are eccentric to different degrees, greatly improving the bolt anti-loosening effect.

[0053] On the second connecting plate, the friction plate is fixed to the second connecting plate by anti-shear screws. The first connecting plate and the mating plate, and the second connecting plate and the mating plate are sealed by O-rings.

[0054] Positioning grooves are provided on the first and second connecting plates to position the connecting plates during installation, preventing problems with the installation of the deformation anti-shear pins.

[0055] Process flow: Oil and dust removal → Pre-install the first / second connecting plates of the friction plates → Install the deformation elastic pin into the first connecting plate → Place the mating plate on the first connecting plate → Place the second connecting plate on the mating plate → Insert the bolt washers → Install the convex nut with high torque → Torque calibration → Install the concave nut with high torque → Complete The friction plates on the first connecting plate assembly are installed using shear screws. Similarly, the installation method for the friction plates on the second connecting plate assembly is the same as that for the first connecting plate.

[0056] Combination anti-loosening nut anti-loosening solution: Bolt torque → Bolt axial preload → Radial pressure generated by the conical surface → Friction force of the contact surface → Anti-loosening; The torque applied to the locking bolt is converted into axial tension in the bolt.

[0057] Fa = T / (k⋅d); Fa: Axial preload of the bolt (N); T: Tightening torque applied to the bolt (N·m); d: Nominal diameter of the bolt (m); k: Torque coefficient (dimensionless). According to the mechanical decomposition of the conical surface, the axial force will be amplified into a radial clamping force: ; p: Average radial pressure on the contact surface between the bolt and the connecting disc; n: The number of locking bolts; Rm The average radius of the cone surface is usually taken as (D_inner + D_outer) / 4. D Inner+ D (outer) / 4, of which D The inner diameter is the inner diameter of the sleeve. D The outer diameter of the sleeve is (m); L : Contact length between the expansion sleeve and the shaft / hub (m); α The semi-cone angle of a cone; ρ: Friction angle between conical surfaces; μ The coefficient of friction between the conical surfaces is used to achieve a better set force.

[0058] The first connecting disc 1, friction plate 2, mating disc 3, and second connecting disc 4 of this invention achieve basic torque power output transmission. The anti-shear screw 5 secures the friction plate. The elastic washer 6 provides support and facilitates connection to the process connector A28, which is matched with the open spring sleeve. This invention uses the deformation anti-shear pin 8 to achieve connecting disc positioning and torque and shear force transmission. O-rings A9 and B10 provide sealing. The positioning groove 13 facilitates connection. The convex nut 11 and concave nut 12 achieve a sealed connection through the female inner conical groove 26 and the male outer conical platform 27.

[0059] Groove A15, Groove B16, improved process.

[0060] As an improvement, curved pads A17 and B18 are provided to adapt and adjust the friction force.

[0061] Bolt component 7, shear hole 14, center through hole 19, side slot 20. Mounting holes B21 and A22 are used for connecting bolts. Process connector B29 enables all bolted connections.

[0062] As an improvement, the open spring sleeve 30 realizes the bolt connection, which is preferably a heat-fit connection, so that after cold shrinkage to room temperature, the cold shrinkage interference fit is realized. As a specific improvement, the step portion 31, the process opening 32, and the elastic claw 33 are used to accommodate the interference fit sleeve in the corresponding hole.

[0063] The base 34 facilitates the opening of the elastic claw. To facilitate the installation of the Archimedes spring 36 in the side slot 35, the root connecting piece 37 is divided into a first spring 38 and a second spring 39 by a process slot 40, which correspond to the mounting holes B21 and A22.

[0064] This invention has good processability, achieves good overall anti-loosening effect, and is easy to disassemble.

[0065] The present invention has been described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed in detail.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of the present invention can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All technical contents not described in detail in the present invention are well-known technologies.

Claims

1. A torque limiter, characterized in that: It includes a connecting plate and a dual plate (3); the connecting plate includes a first connecting plate (1) and a second connecting plate (4); The dual disk (3) is set between the first connecting disk (1) and the second connecting disk (4); Friction plates (2) are provided between the dual disk (3) and the first connecting disk (1) and / or between the dual disk (3) and the second connecting disk (4); The dual disk (3) is rotated relative to the connecting disk; A bolt (7) is inserted between the mounting hole A (22) of the first connecting plate (1) and the mounting hole B (21) of the second connecting plate (4). Positioning grooves (13) are distributed on the outer periphery of the first connecting plate (1).

2. A method for assembling a torque limiter, characterized in that: Used for assembling torque limiters; The torque limiter includes a connecting plate and a dual plate (3); the connecting plate includes a first connecting plate (1) and a second connecting plate (4); The dual disk (3) is set between the first connecting disk (1) and the second connecting disk (4); Friction plates (2) are provided between the dual disk (3) and the first connecting disk (1) and / or between the dual disk (3) and the second connecting disk (4); The dual disk (3) is rotated relative to the connecting disk; A bolt (7) is inserted between the mounting hole A (22) of the first connecting plate (1) and the mounting hole B (21) of the second connecting plate (4). The assembly method includes the following steps; S1, remove oil and dust, and clean the connecting plate and the mating plate (3); S2, Install friction plates (2) on the connecting plate using anti-shear screws (5); S3, Install deformation anti-shear pin (8) on the first connecting plate (1); S4, install O-rings B (10) on the first connecting plate (1) and the second connecting plate (4) respectively. S5, the dual disk (3) is placed on the first connecting disk (1); In S2, after trial assembly, adjust the thickness of the arc pad B (18) or arc pad A (17) on the connecting plate; In S3, the first connecting plate (1) and the second connecting plate (4) are respectively heat-fitted with deformation anti-shear pins (8); S6, insert O-ring B (10), install the second connecting plate (4); S6, install the bolt (7) and tighten the combination lock nut (23).

3. The assembly method of the torque limiter according to claim 2, characterized in that: When setting the torque calibration, a torque wrench is used to tighten the convex nut (11) and the concave nut (12) of the first connecting disc (1); First, a tightening torque T is applied to the bolt (7) by the convex nut (11) and the concave nut (12), so that the radial pressure generated between the male outer cone (27) and the female inner cone groove (26) generates an axial preload force Fa; Fa = T / (k⋅d); Fa: Axial preload of the bolt (N); T: Tightening torque applied to the bolt (N·m); d: Nominal diameter of the bolt (m); k: Torque coefficient (dimensionless). Then, according to the mechanical decomposition of the conical surface, the axial force is amplified into a radial clamping force: ； p: Average radial pressure on the corresponding contact surface between the bolt and the connecting disc; n: The number of locking bolts; Rm The average radius of the cone surface is usually taken as (D_inner + D_outer) / 4. D Inner+ D (outer) / 4, of which D The inner diameter is the inner diameter of the sleeve. D The outer diameter of the sleeve is (m); L : Contact length between the expansion sleeve and the shaft / hub (m); α The semi-cone angle of a cone; ρ: Friction angle between conical surfaces; μ The coefficient of friction between the conical surfaces; In S6, a convex nut (11) is installed on the bolt (7), and then the torque is calibrated and the concave nut (12) is installed with torque applied. In S6, process connector A (28) is pre-attached to bolt (7), and process connector B (29) is pre-attached to the second connecting plate (4).

4. The torque limiter according to claim 3, characterized in that: Shearing holes (14) are respectively provided on the end faces of the first connecting plate (1) and the second connecting plate (4). Shear screws (5) are passed through the friction plate (2) and installed in the corresponding shear holes (14); a deformation shear pin (8) is inserted between the first connecting plate (1) and the second connecting plate (4). The deformation shear pin (8) has a central through hole (19); A side slot (20) communicating with the central through hole (19) is provided on the side wall of the deformation anti-shear pin (8).

5. The torque limiter according to claim 1, characterized in that: The convex nut (11) has a male external cone (27); The concave nut (12) has a female inner conical groove (26) that is adapted to the conical surface of the male external conical truncated cone (27); The male outer cone (27) and the female inner cone groove (26) are eccentrically set along their axes.

6. The torque limiter according to claim 1, characterized in that: An O-ring B (10) is provided at the joint between the first connecting plate (1) and the second connecting plate (4). An O-ring A (9) is provided between the mating surface of the first connecting plate (1) and the mating surface of the dual plate (3) and / or between the mating surface of the second connecting plate (4) and the mating surface of the dual plate (3).

7. The torque limiter according to claim 1, characterized in that: A limiting position (41) for fixing O-ring B (10) is provided on the first connecting plate (1) and / or the second connecting plate (4). A protrusion C (25) is provided on the first connecting plate (1) and / or a protrusion B (24) is provided on the second connecting plate (4) for fixing the corresponding O-ring A (9). The friction plate (2) is located between O-ring B (10) and O-ring A (9).

8. The torque limiter according to claim 1, characterized in that: An elastic washer (6) is provided on one end of the bolt (7) and a combined anti-loosening nut (23) is installed on the threaded end. The combination anti-loosening nut (23) includes a convex nut (11) and a concave nut (12) with a convex-concave interlocking mechanism.

9. The torque limiter according to claim 4 or 6, characterized in that: An annular groove B (16) is provided on the first connecting plate (1). An annular groove A (15) is provided on the second connecting plate (4); Groove B (16) and / or groove A (15) are used to place friction plate (2); Bolt (7) is tightened to mounting hole A (22) and / or bolt (7) is tightened to mounting hole B (21); A resilient Archimedes spring (36) is provided on a number of bolts (7) and / or a resilient expansion sleeve is provided on a number of bolts (7).

10. The torque limiter according to claim 7, characterized in that: A curved pad B (18) is placed in the groove B (16); A curved pad A (17) is placed in the groove A (15); The thickness of the curved pad B (18) or the curved pad A (17) is now adjusted and fitted. The annular groove A (42) is located on the outer side of the first connecting plate (1). A process receiving plate A (28) is provided in the annular groove A (42); A process receiving plate B (29) is provided on the outside of the second connecting plate (4). Process receiving plate A (28) and process receiving plate B (29) have the same structure; Bolt holes are distributed on the process receiving plate A (28) to correspond to the mounting holes A (22). An open spring sleeve (30) is provided in the process receiving plate A (28). Install bolts (7) on the open spring sleeve (30); All bolts (7) are tightened to the corresponding process plate A (28) and process plate B (29) through the open spring sleeve (30); The open spring sleeve (30) has a stepped portion (31) that fits tightly with the neck of the bolt (7). The step portion (31) has a process opening (32); The step portion (31) has several elastic claws (33); The end of the elastic claw (33) has a foot (34); The bolt (7) has a threaded middle section and a threaded end; A side slot (35) is provided on the bolt (7); The root connecting piece (37) of the Archimedes spring (36) is engaged in the side slot (35); The Archimedes spring (36) has a first spring (38) and a second spring (39) divided by a process slot (40). The first spring (38) and the second spring (39) correspond to mounting holes A (22) and B (21) respectively. Mounting hole A (22) and mounting hole B (21) are tapered holes; The large end of the tapered hole of mounting hole A (22) fits into the large end of the tapered hole of mounting hole B (21); The process receiving plate B (29) is located between the convex nut (11) and the concave nut (12) or between the convex nut (11) and the second connecting plate (4).

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