Gearbox elastic support assembly with multiple layers of steel plate
By adding a thicker annular steel plate and constructing a transverse support structure in the gearbox elastic support assembly, the problem of easy deformation of rubber elastomers under alternating loads was solved, thereby improving the stability and shock absorption performance of the support assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TIEKE NEW MATERIAL CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-26
AI Technical Summary
In existing gearbox elastic support components, the rubber elastomer is easily squeezed and deformed in the gap of the annular steel plate under long-term alternating loads, resulting in stiffness reduction, decreased vibration damping performance, and even reduced equipment installation accuracy and wear of internal gearbox components.
A ring-shaped steel plate, 30% to 80% thicker than the adjacent ring-shaped steel plate, is added to the middle part of the rubber elastomer to form a multi-layer steel plate stacked structure. A transverse support structure is constructed through the extension part and the telescopic rod. The volume and stiffness of the rubber are adjusted by the hydraulic device to optimize the stress transmission path.
It effectively prevents the rubber elastomer from being squeezed into the gap of the annular steel plate under load, improves the structural stability and shear resistance of the support components, reduces excessive deformation of the rubber, and enhances the installation accuracy and vibration damping performance of the equipment.
Smart Images
Figure CN224414313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gearbox elastic support components, and more specifically, it relates to a gearbox elastic support component with multiple layers of steel plates stacked together. Background Technology
[0002] In the transmission systems of equipment such as ships and wind power generation, the vibration and impact generated by the gearbox during operation need to be reduced and transmitted through elastic support components. Traditional gearbox elastic support components mostly adopt a structure of rubber elastomer combined with embedded annular steel plate, which uses the elasticity of rubber material to buffer vibration and provides rigid support through steel plate.
[0003] However, in the existing technology, when multiple annular steel plates are embedded and fixed on the outside of the rubber elastomer, the rubber elastomer between adjacent annular steel plates is easily squeezed and deformed from the gap between the steel plates under the action of shear force due to the lack of sufficient rigid support in the middle area under long-term alternating load. This leads to the decrease in stiffness of the elastic support component, the decrease in shock absorption performance, and even problems such as reduced equipment installation accuracy and accelerated wear of internal components of the gearbox.
[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a gearbox elastic support assembly with multiple layers of steel plates. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gearbox elastic support assembly with multiple layers of steel plates.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer steel plate stacked gearbox elastic support assembly, including a rubber elastomer and multiple annular steel plates A embedded and fixed on the outer sidewall of the rubber elastomer. The outer diameter of each annular steel plate A is adapted to the outer contour of the rubber elastomer. An additional annular steel plate B is added to the middle part of the rubber elastomer. The annular steel plate B is thickened relative to the annular steel plate A. The thickness of the annular steel plate B in the middle is 30% to 80% thicker than the adjacent annular steel plate A, thereby concentrating and enhancing the shear resistance of the support structure to prevent deformation of the rubber elastomer.
[0007] Preferably, both the outer walls of the annular steel plate A and the annular steel plate B extend outward to form extension portions, and a telescopic rod is installed between the extension portions.
[0008] Preferably, the top of the rubber elastomer extends downward to form a recess, thereby reducing the rubber volume on the rubber elastomer and forming a flexible load-bearing area that can be elastically deformed. The interior of the rubber elastomer has an enlarged cavity, which has a frustum-shaped transition structure that is narrow at the top and wide at the bottom. Its bottom end is connected to an external hydraulic device through a hydraulic pipeline. Liquid is injected into the enlarged cavity through the hydraulic device, and the liquid pressure can be transmitted upward to evenly support the rubber material in the recessed area. The bottom end of the rubber elastomer is detachably connected to a circular base plate by bolts, and the circular base plate has an injection port that communicates with the enlarged cavity.
[0009] Preferably, the cross-section of the recess is W-shaped, comprising two downwardly recessed arc segments and a convex transition segment in the middle.
[0010] Preferably, a dust plug with a sealing ring is installed inside the injection port.
[0011] Preferably, a baffle plate is provided inside the enlarged cavity. The baffle plate has a semi-circular plate-like structure with a central guide hole to buffer the flow rate of the buffer fluid.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This utility model achieves precise protection through "strengthening the stiffness of key areas + optimizing the stress transmission path". It achieves efficient control of the extrusion deformation of the rubber elastomer with minimal structural modifications. At the same time, the addition of the annular steel plate B will also reduce the gap between the annular steel plates A. The smaller gap can enhance the circumferential constraint force of the annular steel plate A on the rubber elastomer, forming a tighter "rigid enclosure" on the outside of the rubber elastomer. This directly inhibits the tendency of the rubber elastomer to be extruded into the gap of the annular steel plate A under load, effectively solving the problem of easy plastic deformation in the middle area of traditional multi-layer steel plate support, and improving the structural stability of the elastic support component under alternating loads.
[0014] 2. In this utility model, the extension part extends outward to form a rigid connection point, so that the telescopic rod constructs a transverse support structure between the annular steel plates. When the rubber elastomer is subjected to load and undergoes radial expansion, the telescopic rod can suppress the relative displacement between the annular steel plate A and the annular steel plate B through its own rigidity, so as to avoid the rubber elastomer being squeezed out of the gap due to the change in the spacing of the annular steel plates.
[0015] 3. The recessed design in this utility model reduces the volume of rubber material in the area, forming a flexible load-bearing area that can be elastically deformed, thus reducing the risk of excessive deformation caused by excessive material in traditional rubber elastomers. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This utility model Figure 1 Another perspective on the specific structure;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention.
[0020] In the diagram: 1. Rubber elastomer; 101. Recess; 102. Enlarged cavity; 2. Annular steel plate A; 3. Annular steel plate B; 4. Extension section; 5. Telescopic rod; 6. Circular base; 7. Injection port; 8. Dustproof plug; 9. Baffle plate. Detailed Implementation
[0021] like Figure 1-3 As shown, this utility model provides a gearbox elastic support assembly with multiple layers of steel plates, including a rubber elastomer 1 and multiple annular steel plates A2 embedded and fixed on the outer side wall of the rubber elastomer 1. The outer diameter of each annular steel plate A2 is adapted to the outer contour of the rubber elastomer 1. An additional annular steel plate B3 is added to the middle part of the rubber elastomer 1. The annular steel plate B3 is thickened relative to the annular steel plate A2. The thickness of the annular steel plate B3 in the middle is 30% to 80% thicker than the adjacent annular steel plate A2, which concentrates the enhancement of the shear resistance of the support structure to prevent deformation of the rubber elastomer 1.
[0022] When the gearbox vibrates or bears loads during operation, the rubber body expands and deforms radially under pressure. The outer embedded and fixed annular steel plate A2 provides initial constraint on the rubber elastomer 1. However, due to the lack of intermediate rigid support, the rubber elastomer 1 between the two annular steel plates A2 is easily squeezed outward under shear force. At this time, an annular steel plate B3 with a thickness of 30% to 80% thicker than the adjacent steel plate A is added to the middle part of the rubber elastomer 1. (During gearbox operation, the shear stress in the middle region of the rubber elastomer 1 is usually 1.3 to 1.8 times that on both sides (according to ANSYS simulation data). Increasing the thickness of the annular steel plate B3 by 30% to 80% can increase the shear strength of this region by 40% to 90%, which can just offset the stress peak in the middle region and prevent the rubber elastomer 1 from being squeezed out due to excessive shear force. If the thickness increase is less than 30%, the stiffness of the annular steel plate B3 is not sufficiently improved (shear strength increase < 40%), and it cannot effectively constrain the rubber elastomer.) If the deformation of body 1 exceeds 80%, the stiffness is excessively increased (the shear strength increase is >90%), which will cause the elastic deformation space of the rubber elastomer 1 in this area to be excessively compressed and lose its buffering performance. This can prevent the rubber elastomer 1 between multiple annular steel plates A2 from being squeezed and deformed. Its core lies in achieving precise protection through "strengthening the stiffness of key areas + optimizing the stress transmission path": when the gearbox load acts on the rubber elastomer 1, the radial expansion force will cause the rubber elastomer 1 between adjacent annular steel plates A2 to tend to be squeezed outward. The middle area is the center of the overall support structure, and the shear stress is most concentrated, making it a high-incidence area for deformation. At this point, an annular steel plate B3, which is 30% to 80% thicker than the adjacent annular steel plate A2, is added between the two annular steel plates A2 in the critical area. Its high stiffness characteristics can directly resist the shear force in the middle area, just like setting a rigid support point at the deformation "weak point". This constrains the rubber elastomer 1, which may have been squeezed out to both sides, within the area enclosed by the annular steel plate B3 and the upper and lower annular steel plates A2. As for the rubber elastomer 1 between the other annular steel plates A2 without annular steel plate B3, the middle annular steel plate B3 has already redistributed the overall shear stress through rigid transmission, reducing the stress peak value in the two sides and concentrating to enhance the shear resistance of the support structure. In addition, the constraint effect of the outer annular steel plate A2 itself can suppress the excessive deformation in this area. This "single-point reinforcement of the critical intermediate area" design achieves efficient control of the extrusion deformation of the rubber elastomer 1 with minimal structural modifications. At the same time, the addition of the annular steel plate B3 also reduces the gap between the annular steel plates A2 (the elastic support assembly has 6 layers of annular steel plates A2; now, with the addition of annular steel plate B3, a 7-layer structure is formed, resulting in a smaller gap). The smaller gap enhances the circumferential constraint of the annular steel plates A2 on the rubber elastomer 1, forming a tighter "rigid enclosure" on the outside of the rubber elastomer 1, directly suppressing the tendency of the rubber elastomer 1 to be extruded into the gap of the annular steel plates A2 under load.
[0023] Furthermore, extension sections 4 are formed on the outer walls of both annular steel plates A2 and B3. Telescopic rods 5 are installed between the extension sections 4. In this way, the extension sections 4 extend outward to form rigid connection points, so that the telescopic rods 5 construct a transverse support structure between the annular steel plates. When the rubber elastomer 1 is subjected to load and undergoes radial expansion, the telescopic rods 5 can suppress the relative displacement between annular steel plates A2 and B3 through their own rigidity, preventing the rubber elastomer 1 from being squeezed out of the gap due to changes in the spacing between the annular steel plates. At the same time, the telescopic characteristics of the telescopic rods 5 can dynamically adapt to the elastic deformation of the rubber elastomer 1. During the vibration of the gearbox, it absorbs part of the vibration energy through stretching or compression, and converts the shear stress between the steel plates into the axial force of the telescopic rods 5, thereby reducing the shear load borne by the rubber elastomer 1.
[0024] This invention also features a recess 101 extending downward from the top of the rubber elastomer 1 to reduce the volume of rubber on the rubber elastomer 1 and form a flexible load-bearing area that can be elastically deformed. An enlarged cavity 102 is provided inside the rubber elastomer 1. The enlarged cavity 102 has a frustum-shaped transition structure that is narrow at the top and wide at the bottom. Its bottom end is connected to an external hydraulic device through a hydraulic pipeline. Liquid is injected into the enlarged cavity 102 through the hydraulic device. The liquid pressure can be transmitted upward and evenly support the rubber material in the recess 101. A circular base plate 6 is detachably connected to the bottom end of the rubber elastomer 1 by bolts. The circular base plate 6 has an injection port 7 that communicates with the enlarged cavity 102.
[0025] During operation, the recess 101 at the top of the rubber elastomer 1, with a depth of 1 / 4 to 1 / 3 of its height, reduces the volume of rubber material in this area, forming a flexible load-bearing zone that can elastically deform, thus reducing the risk of excessive deformation caused by excessive material in traditional rubber elastomers 1. The bottom of the enlarged cavity 102, which is shaped like a frustum and narrow at the top and wide at the bottom, is connected to an external hydraulic device via a hydraulic pipeline. When the hydraulic device injects liquid into the enlarged cavity 102 (through the injection port 7), the liquid pressure is evenly transmitted upward along the frustum-shaped cavity, generating an upward supporting force on the rubber material in the recess 101, lifting the recess 101 and causing it to undergo elastic deformation (the enlarged cavity ensures that sufficient liquid can be injected to lift the recess 101). At this time, the liquid pressure and the elastic force of the rubber elastomer 1 together constitute the supporting force on the gearbox. By adjusting the amount and pressure of the liquid injected by the hydraulic device, the degree of deformation of the depression 101 can be dynamically adjusted, thereby changing the overall stiffness of the elastic support component. In this way, the flexibility of the rubber material can be used to buffer vibration, and the excessive deformation of the rubber itself can be reduced by the support of liquid pressure.
[0026] Furthermore, a dust plug 8 with a sealing ring is installed inside the injection port 7. On the one hand, the dust plug 8 can effectively prevent external dust, particles, and other impurities from entering the injection port 7, avoiding contaminants from clogging the hydraulic pipeline or wearing down the sealing components. Especially in the complex operating environment of equipment such as ships and wind power plants, it can significantly reduce hydraulic system failures caused by impurities and ensure smooth liquid transmission. On the other hand, the sealing ring forms a flexible sealing interface between the dust plug 8 and the injection port 7. Relying on elastic deformation to compensate for the connection gap, even under vibration or impact conditions, it can reliably prevent external moisture and corrosive gases from entering the enlarged cavity 102, while preventing internal liquid leakage and ensuring stable pressure inside the cavity, thereby maintaining elasticity. The stiffness adjustment accuracy and dynamic response performance of the supporting components are enhanced by the W-shaped cross-section of the recess 101, which includes two downward-concave arc segments and a raised transition segment in the middle. This unique geometric shape achieves efficient load transfer and optimized contact performance: Before filling with liquid, the arc segments of the W-shaped recess 101 form a flexible load-bearing area for the rubber elastomer 1, retaining the elastic buffering characteristics of the rubber material and effectively absorbing vibrations and impacts during equipment operation; when the external hydraulic device injects liquid into the enlarged cavity 102 and reaches a certain pressure, the liquid pressure is transmitted upward, pushing the arc segments and raised transition segment of the W-shaped recess 101 to be uniformly lifted, transforming the originally concave W-shaped structure into a planar contact state that fits against the bottom of the upper frame of the gearbox. This surface contact design significantly increases the contact area between the support structure and the gearbox, evenly distributing the load and avoiding the localized stress concentration problems caused by traditional point or line contact. This enhances the load-bearing capacity and stability of the elastic support component. A baffle plate 9 is installed inside the enlarged cavity 102. The baffle plate 9 has a semi-circular plate structure with a central guide hole. The semi-circular plate structure can effectively change the flow path of the liquid, causing the injected liquid to disperse in all directions after impacting the baffle plate 9. The curved surface of the plate transforms the concentrated liquid impact force into a multi-directional dispersion force, thereby reducing the liquid velocity and preventing the high-speed liquid from causing excessive instantaneous pressure impact on the rubber elastomer 1. The central guide hole buffers the flow velocity while ensuring that the liquid can continuously and stably transmit pressure upwards, maintaining the uniform deformation of the rubber material in the recessed area 101 and ensuring the stability of the elastic support component stiffness adjustment.
[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A multi-layer steel plate stacked gearbox elastic support assembly, comprising a rubber elastomer (1) and a plurality of annular steel plates A (2) embedded and fixed on the outer side wall of the rubber elastomer (1), wherein the outer diameter of each annular steel plate A (2) is adapted to the outer contour of the rubber elastomer (1), characterized in that: An additional annular steel plate B (3) is added to the middle part of the rubber elastomer (1). The annular steel plate B (3) is thickened relative to the annular steel plate A (2). The thickness of the annular steel plate B (3) in the middle is 30% to 80% thicker than that of the adjacent annular steel plate A (2), which strengthens the shear resistance of the support structure to prevent deformation of the rubber elastomer (1).
2. The gearbox elastic support assembly with multiple layers of steel plates as described in claim 1, characterized in that: Both the outer walls of the annular steel plate A (2) and the annular steel plate B (3) extend outward to form extensions (4), and telescopic rods (5) are installed between the extensions (4).
3. The gearbox elastic support assembly with multiple layers of steel plates as described in claim 1, characterized in that: The top of the rubber elastomer (1) extends downward to form a recess (101) to reduce the rubber volume on the rubber elastomer (1) and form a flexible load-bearing area that can be elastically deformed. An enlarged cavity (102) is provided inside the rubber elastomer (1). The enlarged cavity (102) has a frustum-shaped transition structure that is narrow at the top and wide at the bottom. Its bottom end is connected to an external hydraulic device through a hydraulic pipeline. Liquid is injected into the enlarged cavity (102) through the hydraulic device. The liquid pressure can be transmitted upward and evenly support the rubber material in the recess (101). The bottom end of the rubber elastomer (1) is detachably connected to a circular base plate (6) by bolts. An injection port (7) communicating with the enlarged cavity (102) is provided on the circular base plate (6).
4. The gearbox elastic support assembly with multiple layers of steel plates according to claim 3, characterized in that: The cross-section of the recess (101) is W-shaped, comprising two downwardly recessed arc segments and a raised transition segment in the middle.
5. The gearbox elastic support assembly with multiple layers of steel plates according to claim 3, characterized in that: The injection port (7) is equipped with a dust plug (8) with a sealing ring.
6. The gearbox elastic support assembly with multiple layers of steel plates according to claim 3, characterized in that: The enlarged cavity (102) is provided with a baffle plate (9), which is a semi-circular plate structure with a central guide hole to buffer the flow rate of the fluid.