An assembly structure of a combined disc spring device

Abstract

The utility model provides a kind of combined disc spring device's assembly structure, belong to disc spring assembly technical field, the assembly structure of this combined disc spring device, including disc spring body, compression sleeve ring and positioning pin, disc spring body is conical platform and is provided with central through-hole in center, the outer circumferential edge of disc spring body forms annular pressure surface downward, compression sleeve ring is circular ring structure and is sleeved in the outside of disc spring body, annular gap is formed between the inner circumferential surface of compression sleeve ring and the outer circumferential surface of disc spring body, positioning pin is arranged on the side wall of disc spring body, one end of positioning pin is fixed on disc spring body, the other end of positioning pin extends to the inside of compression sleeve ring and is abutted with the inner circumferential surface of compression sleeve ring, the upper end surface of compression sleeve ring is provided with annular boss, annular boss is evenly distributed with limit groove along the circumferential direction of compression sleeve ring, the extension end of positioning pin is inserted into limit groove, pre-compression space is formed between the lower end surface of disc spring body and the inner circumferential bottom surface of compression sleeve ring.

Description

Technical Field

[0001] This utility model belongs to the field of disc spring assembly technology, and more specifically, relates to an assembly structure for a combined disc spring device. Background Technology

[0002] Disc springs, as an important elastic element, are widely used in mechanical engineering, especially in applications requiring high loads and limited deformation space. Due to their high load-bearing capacity, small axial dimensions, and adjustable stiffness, disc springs are the preferred elastic element. Currently, disc spring devices are mainly used in the buffer systems of heavy machinery, preload mechanisms of precision equipment, shock absorbers in automotive suspensions, and elastic sealing structures of various valves. In practical applications, disc springs often need to be used in combination with other mechanical components, which involves the assembly and fixing of the disc springs. Common disc spring assembly methods in existing technologies include directly mounting them onto shaft parts using interference fits, pressing the disc spring against the mounting surface using pressure plates and bolts, and placing the disc spring in a dedicated disc spring seat with end caps for positioning. Traditional assembly methods can generally meet the requirements under static or low-frequency load conditions. However, under high-frequency vibration or impact load conditions, traditional assembly methods reveal significant shortcomings. Although interference fit can provide a large fixing force, assembly and disassembly are difficult, and the interference amount is hard to control precisely, which can easily lead to deformation of the disc spring's inner hole and affect its elastic properties. Although bolt tightening is convenient for assembly, the attenuation of bolt preload and loosening of threaded connections are difficult to avoid. After long-term use, the disc spring is prone to positional displacement. Although dedicated disc spring seats provide good constraint on the disc spring, they are complex in structure, occupy a large amount of space, and have high manufacturing costs. Therefore, there is an urgent need for a disc spring assembly structure that can ensure the positional accuracy and stability of the disc spring, while also having the advantages of simple structure, convenient assembly, and reasonable cost. Utility Model Content

[0003] In view of this, the present invention provides an assembly structure for a combined disc spring device, which can solve the technical problem that the relative positional accuracy between the disc spring body and the external fixed structure is difficult to guarantee during the assembly and use of existing disc spring devices. Traditional disc spring assembly structures mostly adopt simple fitting or bolt tightening methods. When the disc spring is subjected to periodic alternating loads, these assembly methods are prone to radial displacement or circumferential rotation of the disc spring body, which in turn causes the stress state of the disc spring to deviate from the design conditions, resulting in local stress concentration and reduced fatigue life of the disc spring. Especially under high-frequency vibration conditions or high load conditions, the problem of insufficient positional stability of traditional assembly structures is more prominent, which seriously affects the reliability and service life of the disc spring device.

[0004] This utility model is implemented as follows:

[0005] This utility model provides an assembly structure for a combined disc spring device, comprising a disc spring body, a clamping collar, and a positioning pin. The disc spring body is truncated conical in shape and has a central through hole. The outer circumferential edge of the disc spring body forms an annular pressure surface downwards. The clamping collar is an annular structure and is fitted onto the outside of the disc spring body. An annular gap is formed between the inner circumferential surface of the clamping collar and the outer circumferential surface of the disc spring body. The positioning pin passes through the side wall of the disc spring body. One end of the positioning pin is fixed to the disc spring body, and the other end of the positioning pin extends to the inner side of the clamping collar and abuts against the inner circumferential surface of the clamping collar. An annular boss is provided on the upper end surface of the clamping collar. Multiple limiting grooves are evenly distributed along the circumference of the clamping collar on the annular boss. The extended end of the positioning pin is inserted into the limiting groove. A pre-compression space is formed between the lower end surface of the disc spring body and the inner circumferential bottom surface of the clamping collar.

[0006] The technical advantages of the assembly structure of the combined disc spring device provided by this utility model are as follows: By setting a clamping collar on the outside of the disc spring body and using a positioning pin for fixing, the disc spring body can achieve precise position limitation through the cooperation of the positioning pin and the limiting groove when subjected to axial pressure, avoiding radial displacement or rotational displacement of the disc spring body during the force process. At the same time, the cooperation structure of the annular boss and the limiting groove can disperse the shear force borne by the positioning pin, improving the overall stability and service life of the assembly structure. The setting of the pre-compression space provides sufficient room for the elastic deformation of the disc spring body, ensuring that the disc spring device can fully exert its elastic energy storage and buffer energy absorption functions.

[0007] Based on the above technical solution, the assembly structure of the combined disc spring device of this utility model can be further improved as follows:

[0008] The projected length of the positioning pin along the radial direction of the disc spring body is greater than the wall thickness of the clamping collar.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The structural design that the projection length of the positioning pin along the radial direction of the disc spring body is greater than the wall thickness of the clamping collar allows the positioning pin to penetrate the wall of the clamping collar and form an effective support point on its inner side. This through-type fixing method has stronger shear resistance and pull-out resistance than the surface fixing method. When the disc spring device is subjected to periodic alternating loads, the through-type structure of the positioning pin can effectively prevent relative slippage between the clamping collar and the disc spring body, ensuring the positional accuracy and assembly reliability of the assembly structure during long-term use.

[0010] Furthermore, the height of the annular boss is less than the diameter of the extended end of the locating pin, and the depth of the limiting groove is equal to the height of the annular boss.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: by limiting the height of the annular boss to be less than the diameter of the extension end of the locating pin, and making the depth of the limiting groove equal to the height of the annular boss, a precise fit relationship is formed between the extension end of the locating pin and the limiting groove. This size matching design enables the locating pin to achieve a dual limiting effect in both the axial and circumferential directions after being inserted into the limiting groove. This not only prevents the clamping ring from disengaging in the axial direction, but also restricts the circumferential rotation of the clamping ring relative to the disc spring body, significantly improving the overall rigidity and torsional resistance of the assembly structure, while facilitating assembly operations.

[0012] Furthermore, the annular pressure surface of the disc spring body is an inwardly inclined conical surface, and the angle between the conical surface and the horizontal plane is 15° to 30°.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the annular pressure surface of the disc spring body is designed as a conical structure with an inward inclination of 15° to 30°. This inclination angle design allows the disc spring body to generate a radial component force along the conical direction when subjected to axial compressive force. This radial component force causes the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping ring to maintain a moderate force, thereby enhancing the frictional torque between the two and effectively suppressing the radial movement phenomenon of the disc spring body under stress. At the same time, the conical structure can also make the compressive stress form a more uniform distribution state inside the disc spring body, extending the fatigue life of the disc spring device.

[0014] Furthermore, the inner circumferential surface of the clamping collar is provided with multiple annular ribs along the axial direction, and the annular ribs are kept in a non-contact state with the outer circumferential surface of the disc spring body.

[0015] The beneficial effects of the above-mentioned improvement scheme are as follows: multiple annular ribs are arranged along the axial direction on the inner circumferential surface of the clamping collar. These annular ribs are kept in a non-contact state with the outer circumferential surface of the disc spring body, forming a gap-type guide structure. When the disc spring body undergoes a small radial displacement during elastic deformation, the annular ribs can play a flexible limiting role, preventing the disc spring body from excessive radial displacement. At the same time, the non-contact design avoids the rigid constraint of the annular ribs on the elastic deformation of the disc spring body, ensuring that the elastic characteristics of the disc spring device will not be reduced due to excessive constraint, thus achieving an optimized balance between the guiding function and the elastic function.

[0016] Furthermore, the locating pin has an elliptical cross-sectional shape, and the major axis of the ellipse is parallel to the radial direction of the disc spring body.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the cross-sectional shape of the locating pin is designed to be elliptical, and the major axis of the ellipse is parallel to the radial direction of the disc spring body. This irregular cross-sectional design makes the locating pin have a larger bending section modulus when bearing the radial force transmitted by the disc spring body, which significantly improves the bending strength and stiffness of the locating pin. At the same time, the elliptical cross-section has a clear directionality in the side wall hole of the disc spring body, which can effectively prevent the locating pin from rotating in the assembly hole, ensuring that the extension direction of the locating pin always remains consistent with the design direction, thus improving the positional accuracy and directional stability of the assembly structure.

[0018] Furthermore, the width of the groove opening of the limiting groove gradually decreases from the outside to the inside along the radial direction of the clamping collar, and the bottom of the limiting groove has a rounded transition shape.

[0019] The beneficial effects of adopting the above-mentioned improved scheme are as follows: by designing the groove width of the limiting groove as a tapered structure that gradually decreases from the outside to the inside along the radial direction of the clamping collar, and using a rounded transition shape at the bottom of the groove, a guiding insertion fit relationship is formed. This structural design allows the extended end of the positioning pin to automatically center and smoothly insert along the guiding action of the tapered groove when inserted into the limiting groove, reducing assembly difficulty and assembly time. At the same time, the rounded transition shape at the bottom of the groove eliminates stress concentration points, avoids local stress concentration caused by sharp corner contact between the extended end of the positioning pin and the bottom of the groove, and improves the fatigue resistance of the assembly structure.

[0020] Furthermore, the inner wall of the central through hole of the disc spring body is provided with a threaded structure, and the ratio of the pitch of the threaded structure to the material thickness of the disc spring body is 2:1 to 5:1.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: A threaded structure is set on the inner wall of the central through hole of the disc spring body, and the ratio of the thread pitch to the thickness of the disc spring body material is controlled within the range of 2:1 to 5:1. This thread parameter design ensures that the central through hole has a sufficient number of threads to provide reliable threaded connection strength, and also ensures that there is sufficient material support thickness between the threads. This avoids the problems of insufficient thread strength due to excessively large thread pitch or increased processing difficulty and stress concentration due to excessively small thread pitch. It achieves the coordination and unity between the threaded connection strength and the structural strength of the disc spring body, and provides a guarantee for the reliable connection of the disc spring device with other components.

[0022] Furthermore, the clamping collar is made of an elastic metal material, and the disc spring body is made of a high-strength alloy steel material.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the combination of using elastic metal material to manufacture the clamping collar and using high-strength alloy steel material to manufacture the disc spring body gives the clamping collar good elastic deformation and recovery capabilities. During the assembly process, it can achieve smooth cooperation with the disc spring body through appropriate elastic expansion. After assembly, it can rely on its own elastic recovery force to form a continuous radial preload on the disc spring body. The disc spring body, made of high-strength alloy steel material, ensures that it has sufficient strength and rigidity when subjected to high-intensity compressive loads. The reasonable combination of the two materials achieves an organic combination of assembly convenience and reliability of use.

[0024] Furthermore, the width of the annular gap between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping collar gradually increases from top to bottom along the axial direction, and the ratio of the maximum width to the minimum width of the annular gap is 3:1 to 6:1.

[0025] The beneficial effects of adopting the above-mentioned improved scheme are as follows: By designing the annular gap width between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping ring to gradually increase from top to bottom along the axial direction, and controlling the ratio of the maximum width to the minimum width within the range of 3:1 to 6:1, a wedge-shaped gap structure is formed. This gradual gap design allows the radial expansion deformation generated by the disc spring body under axial compressive load to obtain a larger deformation space in the lower part, avoiding the additional frictional resistance generated by contact compression between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping ring, ensuring that the disc spring body can smoothly complete the elastic deformation process. At the same time, the smaller gap width at the top can form a better guiding constraint on the upper part of the disc spring body, preventing the disc spring body from becoming unstable and tilting in the early stage of stress.

[0026] Compared with existing technologies, the beneficial effects of the assembly structure of the combined disc spring device provided by this utility model are as follows: This utility model, through the combined assembly structure of the disc spring body, the clamping collar, and the positioning pin, fundamentally solves the problem of positional stability of the disc spring body during use. The structural design of the positioning pin passing through the side wall of the disc spring body and extending into the limiting groove of the clamping collar achieves precise dual limitation of the axial and circumferential positions of the disc spring body, effectively eliminating the radial movement and circumferential rotation phenomena that easily occur in the disc spring body in traditional assembly methods. The mating structure of the annular boss of the clamping collar and the limiting groove disperses the concentrated load borne by the positioning pin onto a larger contact area, significantly improving stability. The design enhances the impact and fatigue resistance of the assembly structure. The rational design of the annular gap and pre-compression space provides ample room for the elastic deformation of the disc spring body, ensuring that the disc spring device can fully perform its elastic energy storage and buffering functions. At the same time, it avoids the problem of decreased elastic performance caused by excessive constraint. The threaded structure design of the central through hole of the disc spring body allows the assembly structure to be easily and reliably connected with other mechanical components, expanding the application range of the disc spring device. The overall assembly structure is compact and reasonable, with good processability and simple assembly operation, making it suitable for mass production and rapid on-site installation. Compared with existing technologies, it has significant advantages such as high positional accuracy, good structural stability, long service life, and strong application adaptability. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the assembly structure of a combined disc spring device;

[0029] Figure 2 A top view of the assembly structure of a combined disc spring device;

[0030] Figure 3 A cross-sectional view of the assembly structure of a combined disc spring device;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Disc spring body; 2. Compression collar. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figures 1-3 The diagram shows a first embodiment of the assembly structure of a combined disc spring device provided by this utility model. In this embodiment, it includes a disc spring body 1, a clamping collar 2, and a positioning pin. The disc spring body is truncated cone-shaped and has a central through hole. The outer circumferential edge of the disc spring body forms an annular pressure surface downwards. The clamping collar is an annular structure and is sleeved on the outside of the disc spring body. An annular gap is formed between the inner circumferential surface of the clamping collar and the outer circumferential surface of the disc spring body. The positioning pin passes through the side wall of the disc spring body. One end of the positioning pin is fixed to the disc spring body, and the other end of the positioning pin extends to the inner side of the clamping collar and abuts against the inner circumferential surface of the clamping collar. An annular boss is provided on the upper end surface of the clamping collar. Multiple limiting grooves are evenly distributed along the circumference of the clamping collar on the annular boss. The extended end of the positioning pin is inserted into the limiting groove. A pre-compression space is formed between the lower end surface of the disc spring body and the inner circumferential bottom surface of the clamping collar.

[0035] In the above technical solution, the projected length of the positioning pin along the radial direction of the disc spring body is greater than the wall thickness of the clamping collar.

[0036] Furthermore, in the above technical solution, the height of the annular boss is less than the diameter of the extended end of the locating pin, and the depth of the limiting groove is equal to the height of the annular boss.

[0037] Furthermore, in the above technical solution, the annular pressure surface of the disc spring body is an inwardly inclined conical surface, and the angle between the conical surface and the horizontal plane is 15° to 30°.

[0038] Furthermore, in the above technical solution, multiple annular ribs are provided on the inner circumferential surface of the clamping collar along the axial direction, and the annular ribs are kept in a non-contact state with the outer circumferential surface of the disc spring body.

[0039] Furthermore, in the above technical solution, the cross-sectional shape of the locating pin is elliptical, and the major axis of the ellipse is parallel to the radial direction of the disc spring body.

[0040] Furthermore, in the above technical solution, the width of the groove opening of the limiting groove gradually decreases from the outside to the inside along the radial direction of the pressing collar, and the bottom of the limiting groove has a rounded transition shape.

[0041] Furthermore, in the above technical solution, the inner wall surface of the central through hole of the disc spring body is provided with a threaded structure, and the ratio of the pitch of the threaded structure to the material thickness of the disc spring body is 2:1 to 5:1.

[0042] Furthermore, in the above technical solution, the clamping collar is made of elastic metal material, and the disc spring body is made of high-strength alloy steel material.

[0043] Furthermore, in the above technical solution, the width of the annular gap between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping collar gradually increases from top to bottom along the axial direction, and the ratio of the maximum width to the minimum width of the annular gap is 3:1 to 6:1.

[0044] The following is a specific embodiment 1 of this utility model: The assembly structure of the combined disc spring device in this embodiment includes three main components: a disc spring body, a clamping collar, and a positioning pin. The disc spring body is made of 60Si2Mn spring steel, and after quenching and tempering heat treatment, its hardness reaches HRC42~HRC48. The overall shape of the disc spring body is a frustum cone, with an outer diameter of 80mm, an inner diameter of 42mm, a cone height of 8mm, a material thickness of 3mm, a central through hole diameter of 40mm, and an M36 coarse thread with a pitch of 4mm and a thread depth of 6mm. The angle between the downward-facing annular pressure surface formed by the outer circumference edge of the disc spring body and the horizontal plane is 20°. This conical surface is precision ground. The surface roughness Ra value is 0.8 micrometers. A locating pin hole is drilled radially 5mm from the upper end face on the side wall of the disc spring body. The locating pin hole has an elliptical cross-section with a major axis of 8mm, a minor axis of 6mm, and a depth of 5mm. The clamping collar is made of 65Mn spring steel, and after tempering, its hardness reaches HRC38~HRC42. The clamping collar has an outer diameter of 95mm, an inner diameter of 82mm, a wall thickness of 6.5mm, and an axial height of 12mm. Four annular ribs are evenly distributed axially on the inner circumference of the clamping collar. Each annular rib is 1.5mm high and 2mm wide, with an axial spacing of 2.5mm between adjacent annular ribs. The upper end face of the clamping collar is reinforced with… The disc spring has a 3mm high annular boss with a 4mm width. Four locating grooves are evenly distributed around the annular boss, each with a 15° circumferential angle span. The grooves have a radial depth of 3mm, an opening width of 9mm, and a bottom width of 7mm. The bottom of the grooves features a 3.5mm radius arc transition. The locating pin is made of 40Cr alloy steel, with a hardness of HRC35-HRC40 after tempering. The overall length of the locating pin is 15mm, with a 5mm fixed section and a 10mm extension section. The cross-sectional shape of the locating pin is elliptical, with a major axis of 7.8mm and a minor axis of 5.8mm. The fixed section is pressed into the disc spring body using an interference fit. The interference fit in the locating pin hole is 0.02mm. The end of the extension section is machined with a hemispherical surface with a radius of 2.9mm. The annular gap width formed at the upper end between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping collar is 1mm, and the annular gap width formed at the lower end is 4mm, with a ratio of 4:1. The pre-compression space height formed between the lower end face of the disc spring body and the inner circumferential bottom surface of the clamping collar is 2mm. This pre-compression space provides sufficient space for the maximum deformation of the disc spring body when subjected to the design load. After assembly, the extension section of the locating pin is fully inserted into the limiting groove. The side of the extension section maintains a gap of 0.1mm between each of the two side walls of the groove, and the hemispherical surface at the end of the extension section maintains a gap of 0.1mm between it and the arc surface at the bottom of the groove.The 0.05mm gap ensures both smooth insertion of the locating pin and a clear limiting effect within the limiting groove. When the disc spring assembly is subjected to an axial compressive load of 12000N, the disc spring body undergoes a 2mm axial compressive deformation. The locating pin, through contact with the sidewall of the limiting groove, controls the radial displacement of the disc spring body within 0.05mm, effectively guaranteeing the positional accuracy of the disc spring body. The entire assembly structure has a compact size, with a total height of only 20mm, making it suitable for space-constrained mechanical equipment.

[0045] The following is another specific embodiment 2 of this utility model: Embodiment 2 is based on Embodiment 1, but the inner circumferential surface structure of the clamping collar is improved and optimized. The number of annular ribs arranged axially on the inner circumferential surface of the clamping collar is increased from 4 in Embodiment 1 to 6. The height of each annular rib is adjusted to 1mm, the width to 1.5mm, and the axial spacing between adjacent annular ribs is adjusted to 1.5mm. This denser arrangement of annular ribs makes the radial guiding effect of the clamping collar on the disc spring body more gentle and uniform. When the disc spring body... When a small radial displacement occurs during elastic deformation, it can simultaneously approach multiple annular ribs, making the guiding constraint force more stable and avoiding the local stress concentration phenomenon that may occur when a single annular rib contacts. At the same time, the number of limiting grooves is increased from 4 in Example 1 to 6, making the circumferential distribution of the positioning pins more uniform. The circumferential angle span of each limiting groove is adjusted to 10°. This improvement makes the assembly structure have better torsional resistance and positional stability when subjected to asymmetrical or eccentric loads, and is suitable for complex working conditions where the load direction changes to some extent.

[0046] The following is another specific embodiment 3 of this utility model: Embodiment 3 is based on Embodiment 1, but with an improved design of the thread structure of the central through hole of the disc spring body. The thread of the central through hole of the disc spring body is changed from the M36 coarse thread in Embodiment 1 to an M36 fine thread, the pitch is adjusted from 4mm to 2mm, and the thread depth is increased to 8mm. Correspondingly, the material thickness of the disc spring body is increased from 3mm in Embodiment 1 to 3.5mm to ensure sufficient material support thickness between the thread teeth. At this time, the ratio of the thread pitch to the material thickness of the disc spring body is 2mm:3.5mm, approximately 4:7. This ratio still... Within a reasonable range of 2:1 to 5:1, the use of fine-pitch threads gives the threaded connection higher self-locking performance and more precise axial positioning accuracy, making it particularly suitable for precision mechanical devices that require frequent adjustments to axial preload or have high requirements for axial positional accuracy. Simultaneously, the annular gap between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping ring has been adjusted and optimized. The width of the upper annular gap remains unchanged at 1mm, while the width of the lower annular gap is increased from 4mm in Example 1 to 5mm, resulting in a maximum width to minimum width ratio of 5:1. This larger gap gradient design allows the disc spring body to withstand greater loads. The radial expansion deformation generated under load provides more space, allowing the assembly structure to adapt to applications with a wider load range. When subjected to a 15000N axial compressive load, the radial expansion of the disc spring body can reach 3.5mm without interfering with the inner circumferential surface of the clamping collar, ensuring that the disc spring body maintains good elastic properties over a larger load range. Furthermore, the number of locating pins is increased from a single locating pin in Example 1 to two locating pins evenly distributed along the circumference of the disc spring body, with a circumferential angle of 180° between the two locating pins. Correspondingly, the total number of limiting grooves on the clamping collar is adjusted to eight. Each locating pin corresponds to four limiting grooves for selective insertion. This dual-locating-pin configuration makes the circumferential constraint force between the disc spring body and the clamping collar more balanced, effectively improving the torsional resistance and overall stability of the assembly structure under asymmetrical loads. It is particularly suitable for working environments subjected to impact loads or vibration loads. The two locating pins also give the assembly structure a certain fault tolerance. Even if one locating pin fails due to fatigue or overload, the other locating pin can still continue to play a locating constraint role, ensuring that the basic function of the assembly structure is not completely lost, and significantly improving the reliability and safety of the assembly structure under harsh working conditions.

[0047] Specifically, the principle of this utility model is as follows: The reason why the combined disc spring device assembly structure of this utility model can effectively solve the problem of the positional stability of the disc spring body is that the disc spring body and the clamping collar are formed into a mutually constrained mechanical system by means of a positioning pin. When the disc spring body is subjected to axial compressive load, the load is transformed into a distributed force along the conical surface through the truncated cone structure of the disc spring body. These distributed forces generate a normal component in the direction perpendicular to the conical surface. The radial component of the normal component will cause the outer circumference of the disc spring body to expand outward. At this time, the positioning pin, as a mechanical connector between the disc spring body and the clamping collar, bears the radial force transmitted by the disc spring body. One end of the positioning pin is fixed to the disc spring body, and the other end is inserted into the limiting groove of the clamping collar, forming an effective constraint on the radial displacement of the disc spring body. The annular boss of the clamping collar distributes the concentrated force borne by the positioning pin to the circumferential structure of the entire boss, avoiding local damage caused by stress concentration. The limiting groove is used to constrain the positioning pin. The containment constraint at the extended end of the locating pin not only restricts the radial displacement of the disc spring body, but also restricts the circumferential rotation of the disc spring body relative to the clamping collar through the contact between the groove sidewall and the locating pin, thus achieving all-round limitation of the spatial position of the disc spring body. At the same time, the annular gap between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping collar, as well as the pre-compression space between the lower end face of the disc spring body and the bottom surface of the clamping collar, provide the necessary degrees of freedom for the elastic deformation of the disc spring body, ensuring that the disc spring body can fully exert its elastic deformation capacity under the premise of precise position limitation. The threaded center through hole of the disc spring body provides a standardized interface for the connection between the entire assembly structure and the external mechanical system, making it easy to integrate the disc spring device into various mechanical devices. This design concept, which combines precise positioning constraint through the locating pin with ensuring the degree of freedom of elastic deformation through the gap space, ensures from a mechanical principle that the disc spring device has both precise positional stability and maintains excellent elastic performance.

[0048] The specific operation or use method of this utility model is as follows: When using this assembly structure, first place the clamping ring on the workbench and check whether the annular boss and the limiting groove of the clamping ring are intact. Then, align the disc spring body with the center position of the clamping ring, so that the central axis of the disc spring body coincides with the central axis of the clamping ring. Slowly move the disc spring body downward and let its outer circumference enter the inner circumference space of the clamping ring. Adjust the circumferential position of the disc spring body so that the positioning pin hole on the side wall of the disc spring body corresponds to the limiting groove on the clamping ring in the circumferential direction. Insert one end of the positioning pin into the positioning pin hole on the side wall of the disc spring body and fix the end of the positioning pin on the disc spring body by interference fit or threaded connection. Then, align the other end of the positioning pin with the limiting groove on the clamping ring and slowly push the disc spring body so that the extended end of the positioning pin is inserted into the limiting groove. Confirm that the positioning pin is fully inserted into the limiting groove and aligned with the bottom arc surface of the groove. Ensure good contact and check if the annular gap between the disc spring body and the clamping ring is uniform. Ensure a predetermined pre-compression space is formed between the lower end face of the disc spring body and the bottom surface of the clamping ring. Connect the bolts or shafts to be connected through the central through-hole of the disc spring body using a threaded structure to achieve a reliable connection, thus securing the entire assembly structure to the external mechanical system. During use, when the disc spring assembly is subjected to axial load, the disc spring body will undergo axial compression deformation under the constraint of the locating pin and the clamping ring. The locating pin maintains the stability of the disc spring body's position through the constraint of the limiting groove, preventing radial displacement and circumferential rotation. When disassembly is required after use, first remove the connecting bolts in the central through-hole, then pull the disc spring body out of the clamping ring axially. The locating pin will disengage from the limiting groove along with the disc spring body, completing the disassembly operation. The entire assembly and disassembly process is simple, requires no special tools, and is suitable for rapid on-site installation and maintenance.

Claims

1. An assembly structure for a combined disc spring device, characterized in that, The device includes a disc spring body, a clamping collar, and a positioning pin. The disc spring body is truncated cone-shaped with a central through hole. The outer circumferential edge of the disc spring body forms an annular pressure surface. The clamping collar is an annular structure and is fitted onto the outside of the disc spring body. An annular gap is formed between the inner circumferential surface of the clamping collar and the outer circumferential surface of the disc spring body. The positioning pin passes through the side wall of the disc spring body. One end of the positioning pin is fixed to the disc spring body, and the other end extends to the inner side of the clamping collar and abuts against the inner circumferential surface of the clamping collar. An annular boss is provided on the upper end surface of the clamping collar. Multiple limiting grooves are evenly distributed along the circumference of the clamping collar on the annular boss. The extended end of the positioning pin is inserted into the limiting groove. A pre-compression space is formed between the lower end surface of the disc spring body and the inner circumferential bottom surface of the clamping collar.

2. The assembly structure of a combined disc spring device according to claim 1, characterized in that The projected length of the positioning pin along the radial direction of the disc spring body is greater than the wall thickness of the clamping collar.

3. An assembly structure for a combined disc spring device according to claim 2, characterized in that The height of the annular boss is less than the diameter of the extended end of the positioning pin, and the depth of the limiting groove is equal to the height of the annular boss.

4. The assembly structure of a combined disc spring device according to claim 3, characterized in that The annular pressure surface of the disc spring body is an inwardly inclined conical surface, and the angle between the conical surface and the horizontal plane is 15° to 30°.

5. An assembly structure for a combined disc spring device according to claim 4, characterized in that The inner circumferential surface of the clamping collar is provided with multiple annular ribs along the axial direction, and the annular ribs are kept in a non-contact state with the outer circumferential surface of the disc spring body.

6. An assembly structure for a combined disc spring device according to claim 5, characterized in that The locating pin has an elliptical cross-sectional shape, and the major axis of the ellipse is parallel to the radial direction of the disc spring body.

7. An assembly structure for a combined disc spring device according to claim 6, characterized in that The width of the groove opening of the limiting groove gradually decreases from the outside to the inside along the radial direction of the clamping collar, and the bottom of the limiting groove has a rounded transition shape.

8. An assembly structure for a combined disc spring device according to claim 7, characterized in that The inner wall of the central through hole of the disc spring body is provided with a threaded structure, and the ratio of the pitch of the threaded structure to the material thickness of the disc spring body is 2:1 to 5:

1.

9. An assembly structure for a combined disc spring device according to claim 8, characterized in that The clamping collar is made of elastic metal material, and the disc spring body is made of high-strength alloy steel material.

10. The assembly structure of a combined disc spring device according to claim 9, wherein The width of the annular gap between the outer circumferential surface of the disc spring body and the inner circumferential surface of the clamping collar gradually increases from top to bottom along the axial direction, and the ratio of the maximum width to the minimum width of the annular gap is 3:1 to 6:1.

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