A wire rope vibration isolator and its installation method

Abstract

The present application belongs to the technical field of vibration isolators and provides a wire rope vibration isolator and its installation method. The wire rope vibration isolator includes: an upper slot pressure plate, a lower slot pressure plate, a first slot pressure plate, a second slot pressure plate, and a wire rope. The sides of the upper slot pressure plate and the lower slot pressure plate are respectively provided with a plurality of mounting holes evenly spaced along the length direction. The wire rope is spirally inserted into the mounting holes of the upper slot pressure plate and the lower slot pressure plate in sequence along one end, and then the wire rope is spirally inserted into the mounting holes of the upper slot pressure plate and the lower slot pressure plate in sequence in the opposite direction, so that the winding direction of the wire rope is opposite to the winding direction on both sides of the middle symmetrical part of the mounting hole. The first slot pressure plate and the second slot pressure plate respectively press the wire rope and are respectively provided in the upper slot pressure plate and the lower slot pressure plate. The wire rope vibration isolator of the present application effectively solves the problem of concentrated stress in the vibration isolator caused by bending of the wire rope during the installation process.

Description

Technical Field

[0001] The present application belongs to the technical field of vibration isolators, and in particular relates to a wire rope vibration isolator and an installation method thereof. Background Art

[0002] Wire rope isolators are widely used as a form of passive vibration isolation technology. Compared to other isolators, they offer low natural frequency, excellent dry friction damping properties, softened stiffness with large deformations, wide-band vibration isolation, high and low temperature resistance, and the ability to withstand shear, roll, tensile and compressive loads. They combine the three functions of elastic support elements for vibration isolation, cushioning, and reducing high-frequency structure-borne noise. They are widely used in applications such as automotive, shipboard, airborne, and satellite-based applications, as well as in high-voltage building equipment and seismic isolation equipment.

[0003] Wire rope isolators use wire rope as their elastic element and primary component, damping load vibration based on the degree of compression deformation (within the wire rope's curvature radius). Therefore, when designing the structure, the appropriate wire rope must be selected based on the load being carried, taking into account the number of strands, the longitudinal and longitudinal widths of the pressure plate, and the flatness of the contact surface at the concave and convex portions of the pressure plate during assembly. Otherwise, the elastic stiffness of the wire rope will be affected. Therefore, it is important to ensure that the wire rope is approximately circular during assembly and that there are no gaps at the contact points of the pressure plate.

[0004] In traditional wire rope isolators, the wire rope is placed between two pressure plates, and the wire rope itself has bending tension. During assembly, the two pressure plates cannot be fully contacted due to the tension, resulting in a gap between them. Summary of the Invention

[0005] In view of this, it is necessary to provide a vibration isolator to address the defects of the existing technology and solve the problem of concentrated stress on the vibration isolator caused by bending of the wire rope during installation.

[0006] To solve the above problems, this application adopts the following technical solutions:

[0007] An embodiment of the present application provides a wire rope vibration isolator, comprising: an upper slot pressure plate, a lower slot pressure plate, a first slot pressure plate, a second slot pressure plate, and a wire rope. The sides of the upper slot pressure plate and the lower slot pressure plate are respectively provided with a plurality of mounting holes evenly spaced along the length direction. The wire rope is spirally inserted into the several mounting holes of the upper slot pressure plate and the lower slot pressure plate in sequence along one end, and then the wire rope is spirally inserted into the several mounting holes of the upper slot pressure plate and the lower slot pressure plate in sequence in the opposite direction, so that the winding direction of the wire rope is opposite to the winding direction on both sides of the symmetrical part in the middle of the mounting hole. The first slot pressure plate and the second slot pressure plate press the wire rope and are respectively arranged in the upper slot pressure plate and the lower slot pressure plate.

[0008] In some embodiments, the upper slot pressure plate and the lower slot pressure plate are both provided with slots on the side facing the wire rope, and the first slot pressure plate and the second slot pressure plate are respectively provided in the slots of the upper slot pressure plate and the lower slot pressure plate.

[0009] In some embodiments, the first slot inner pressure plate and the second slot inner pressure plate are respectively provided with grooves for accommodating the steel wire rope.

[0010] In some embodiments, alignment holes are evenly arranged between the grooves of the first groove inner pressure plate and the second groove inner pressure plate.

[0011] In some embodiments, the upper slot pressure plate and the lower slot pressure plate are respectively provided with alignment holes corresponding to the first slot pressure plate and the second slot pressure plate. The first slot pressure plate is pressed against the slot of the upper slot pressure plate and is fixedly connected through the alignment holes. The second slot pressure plate is pressed against the slot of the lower slot pressure plate and is fixedly connected through the alignment holes.

[0012] In some embodiments, protrusions are provided on both side ends of the first slot pressure plate and the second slot pressure plate, and depressions are provided at corresponding positions of the upper slot pressure plate and the lower slot pressure plate.

[0013] The present application also provides a method for installing a wire rope vibration isolator, comprising the following steps:

[0014] S1: Wind the wire rope from one end so that the winding direction of the wire rope is opposite to the winding direction on both sides of the symmetrical part in the middle of the mounting hole;

[0015] S2: Adjust the length of the wire rope, wind it into the overall wire rope frame, and ensure that both ends are long enough to lock with the slots;

[0016] S3: After the wire rope frame is installed, grind the contact positions of the upper card slot pressure plate, the lower card slot pressure plate, the first slot pressure plate, and the second slot pressure plate to ensure that the contact positions have good flatness;

[0017] S4: The first slot inner pressure plate and the second slot inner pressure plate respectively press the steel wire rope between the clamping grooves of the upper clamping groove pressure plate and the lower clamping groove pressure plate;

[0018] S5: After assembly, check whether the wire rope winding is symmetrical and whether the single wire rope loop is approximately circular. If it is not symmetrical, it is necessary to fine-tune the length of the wire rope on both sides and re-fix the alignment hole;

[0019] S6: Use a feeler gauge to check whether the clearance between the first slot pressure plate, the second slot pressure plate, the upper slot pressure plate, and the lower slot pressure plate meet the requirements. If not, fine-tune the screws of the alignment holes and then re-fix the alignment holes.

[0020] S6: Connect the assembled vibration isolator to other equipment.

[0021] This application adopts the above technical solution to achieve the following effects:

[0022] The steel wire rope of the present application is wound in a symmetrical structure, which is beneficial to eliminate the internal stress between the lateral sides of the vibration isolator, prevent the vibration isolator from tilting along one side, and increase the service life of the vibration isolator. The upper and lower card slot pressure plates on both sides effectively fix the overall structure of the steel wire rope, while limiting the front and rear movement of the pressure plate in the first slot and the pressure plate in the second slot, thereby achieving overall fixation of the steel wire rope. In addition, the side ends of the pressure plate in the first slot and the pressure plate in the second slot of the vibration isolator of the present application are provided with protrusions, and corresponding recesses are provided on the upper and lower card slot pressure plates, respectively, which can limit the left and right movement of the pressure plate in the first slot and the pressure plate in the second slot, effectively solving the problem of movement of the upper and lower card slot pressure plates due to bending stress of the steel wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic diagram of the overall structure of the wire rope vibration isolator provided in an embodiment of the present application;

[0025] Figure 2 A top view of the wire rope vibration isolator structure provided in an embodiment of the present application;

[0026] Figure 3 AA cross-sectional view of the wire rope vibration isolator structure provided in an embodiment of the present application and a partial enlarged view of 3-1;

[0027] Figure 4 This is the BB cross-sectional view of the wire rope isolator structure provided in an embodiment of the present application and a partial enlarged view of 4-1. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0029] In the description of this application, it should be understood that the terms "upper", "lower", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Example 1

[0033] like Figure 1 As shown, the present application provides a wire rope vibration isolator, comprising: an upper slot pressure plate 11, a lower slot pressure plate 12, a first slot pressure plate 21, a second slot pressure plate 22, and a wire rope 30. The sides of the upper slot pressure plate 11 and the lower slot pressure plate 12 are respectively provided with a plurality of mounting holes evenly spaced along the length direction. The wire rope 30 is spirally penetrated into the several mounting holes of the upper slot pressure plate 11 and the lower slot pressure plate 12 in sequence along one end, and then the wire rope 30 is spirally penetrated into the several mounting holes of the upper slot pressure plate 11 and the lower slot pressure plate 12 in sequence in the opposite direction, so that the wire rope 30 penetrated into the upper slot pressure plate 11 and the lower slot pressure plate 12 is symmetrically arranged, the first slot pressure plate 21 and the second slot pressure plate 22 respectively press the wire rope 30 and are respectively arranged in the upper slot pressure plate 11 and the lower slot pressure plate 12.

[0034] In some embodiments, the upper slot pressure plate 11 and the lower slot pressure plate 12 are both provided with slots on the side facing the wire rope 30, and the first slot pressure plate 21 and the second slot pressure plate 22 are respectively provided in the slots of the upper slot pressure plate 11 and the lower slot pressure plate 12.

[0035] In some embodiments, a plurality of grooves for accommodating the steel wire rope 30 are respectively provided on the first groove inner pressure plate 21 and the second groove inner pressure plate 22 .

[0036] In some embodiments, alignment holes are evenly arranged between the grooves of the first groove inner pressure plate 11 and the second groove inner pressure plate 12.

[0037] In some embodiments, the upper slot pressure plate 11 and the lower slot pressure plate 12 are respectively provided with alignment holes corresponding to the first slot pressure plate 21 and the second slot pressure plate 22. The first slot pressure plate 21 is pressed into the slot of the upper slot pressure plate 11 and is fixedly connected through the alignment holes. The second slot pressure plate 22 is pressed into the slot of the lower slot pressure plate 12 and is fixedly connected through the alignment holes.

[0038] Specifically, the steel wire rope 30 is Figure 1 The wire rope 30 is inserted into the mounting holes of the upper and lower card slot pressure plates 11 and 12 in the form of a symmetrical arrangement, so that the winding direction of the wire rope 30 is opposite to that of the winding direction on both sides of the middle of the mounting hole. By adjusting the length of the wire rope on the left and right sides, the overall shape of the wire rope 30 is completed. Then, the first and second slot pressure plates 21 and 22 are pressed against the grooves of the upper and lower card slot pressure plates 11 and 12 respectively, and the holes are fixed with screws. At the same time, it is necessary to ensure that there is enough wire rope at both ends. Lock it with a lock buckle to complete the installation of the entire wire rope.

[0039] It is understandable that the steel wire rope of the present application is wound in a symmetrical manner, which is beneficial to eliminating the internal stress between the lateral sides of the vibration isolator, preventing the vibration isolator from tilting along one side, and increasing the service life of the vibration isolator. In addition, the transmission steel wire rope vibration isolator adopts the form of two pressing plates to press, which is not easy to assemble and adjust. The upper card slot pressing plate 11 and the lower card slot pressing plate 12 of the present application are provided with card slots, so that the two side plates of the upper card slot pressing plate and the lower card slot pressing plate effectively fix the overall structure of the steel wire rope, thereby facilitating the installation of the first slot pressure plate 21 and the second slot pressure plate 22 in the card slot, reducing the difficulty of the assembly process. At the same time, the forward and backward movement of the first slot pressure plate 21 and the second slot pressure plate 22 is limited, realizing the overall fixation of the steel wire rope.

[0040] In some embodiments, as Figure 3 As shown, protrusions are provided on both side ends of the first slot pressure plate 21 and the second slot pressure plate 22, and depressions are provided at corresponding positions of the upper slot pressure plate and the lower slot pressure plate.

[0041] It should be noted that the right angles between the recessed positions of the upper and lower slot pressure plates 11 and the raised positions of the first and second slot pressure plates 21 and 22 must be cleaned, and the flatness of the contact positions between the two must be ensured. A three-coordinate measuring instrument can be used to measure whether the flatness meets the requirements. This application provides recesses on the upper and lower slot pressure plates 11 and 12, and protrusions on the first and second slot pressure plates 21 and 22, which can limit the left and right movement of the first and second slot pressure plates 21 and 22, effectively solving the problem of movement of the upper and lower slot pressure plates 11 and 12 caused by bending stress of the wire rope 30.

[0042] Example 2:

[0043] The present application also provides a method for installing a wire rope vibration isolator, which specifically includes the following steps:

[0044] S1: Wind the steel wire rope 30 from one end so that the winding direction of the steel wire rope 30 is opposite to the winding direction on both sides of the middle symmetrical part of the mounting hole;

[0045] S2: Adjust the length of the steel wire rope 30 and wind it into the overall steel wire rope frame, ensuring that both ends are long enough to be locked with the slots;

[0046] S3: After the wire rope 30 frame is installed, the contact positions of the upper card slot pressure plate 11, the lower card slot pressure plate 12, the first slot inner pressure plate 21, and the second slot inner pressure plate 22 are ground to ensure that the contact positions have good flatness;

[0047] S4: The first slot inner pressure plate 11 and the second slot inner pressure plate 12 respectively press the steel wire rope 30 between the slots of the upper slot pressure plate 11 and the lower slot pressure plate 12;

[0048] S5: After assembly, check whether the wire rope winding is symmetrical and whether the single ring of the wire rope is approximately circular. If not, fine-tune the length of the wire rope on the left and right and re-fix the alignment hole;

[0049] S6: Use a feeler gauge to check whether the clearance between the first slot pressure plate 21 and the second slot pressure plate 22 and the upper slot pressure plate 11 and the lower slot pressure plate 12 meets the requirements. If not, fine-tune the screws of the alignment holes and then re-fix the alignment holes.

[0050] S6: Connect the assembled vibration isolator to other equipment.

[0051] Specifically, in step S5, as Figure 3As shown, the protrusions of the first groove inner pressure plate 21 and the second groove inner pressure plate 22 respectively have a matching tolerance clearance of no more than 0.1mm with the upper groove pressure plate 11 and the lower groove pressure plate 12, thereby limiting the left and right movement of the first groove inner pressure plate 21 and the second groove inner pressure plate 22. Figure 4 As shown, the clearance between the first and second groove pressure plates 21 and 22 and the side plates of the upper and lower groove pressure plates 11 and 12 is no more than 0.1 mm, thereby limiting the forward and backward movement of the first and second groove pressure plates 21 and 22.

[0052] It should also be noted that due to the difficulty in modeling and analyzing the entire wire rope, the geometric optimization of the wire rope is only performed on a single ring load, such as Figure 4 As shown in the cross-sectional view BB, according to the geometric relationship:

[0053]

[0054] Among them, L is half of the width of the belt slot pressure plate, D is the length of the overall profile of the wire rope, Rr is the radius of the curved part of the wire rope, and d is the diameter of the wire rope.

[0055] According to the knowledge of material mechanics and related literature, under the action of load F, the deflection of the wire rope can be calculated using the Karl-Heinz theorem:

[0056]

[0057] According to the vertical stiffness of a single wire rope:

[0058]

[0059] The EsIs in the formula is the product of elastic modulus and moment of inertia, which represents the bending resistance of the wire rope. Under normal circumstances, the three-dimensional approximation of the wire rope satisfies the linear stiffness ratio K 垂向 :K 横向 :K 纵向 =3:1:1.

[0060] The steel wire rope of the present application is wound in a symmetrical structure, which is beneficial to eliminate the internal stress between the lateral sides of the vibration isolator, prevent the vibration isolator from tilting along one side, and increase the service life of the vibration isolator. The upper and lower card slot pressure plates on both sides effectively fix the overall structure of the steel wire rope, while limiting the front and rear movement of the pressure plate in the first slot and the pressure plate in the second slot, thereby achieving overall fixation of the steel wire rope. In addition, the side ends of the pressure plate in the first slot and the pressure plate in the second slot of the vibration isolator of the present application are provided with protrusions, and corresponding recesses are provided on the upper and lower card slot pressure plates, respectively, which can limit the left and right movement of the pressure plate in the first slot and the pressure plate in the second slot, effectively solving the problem of movement of the upper and lower card slot pressure plates due to bending stress of the steel wire rope.

[0061] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A wire rope vibration isolator, characterized in that: include: An upper slot pressure plate, a lower slot pressure plate, a first slot pressure plate, a second slot pressure plate, and a steel wire rope. The sides of the upper slot pressure plate and the lower slot pressure plate are respectively provided with a plurality of mounting holes evenly spaced along the length direction. The steel wire rope is spirally inserted into the several mounting holes of the upper slot pressure plate and the lower slot pressure plate along one end in turn, and then the steel wire rope is spirally inserted into the several mounting holes of the upper slot pressure plate and the lower slot pressure plate in the opposite direction, so that the winding direction of the steel wire rope is opposite to the winding direction on both sides of the symmetrical part of the middle of the mounting hole. The first slot pressure plate and the second slot pressure plate press the steel wire rope and are respectively provided in the upper slot pressure plate and the lower slot pressure plate. The two side ends of the second slot pressure plate are provided with protrusions, and the corresponding positions of the upper slot pressure plate and the lower slot pressure plate are provided with depressions.

2. The wire rope vibration isolator according to claim 1, characterized in that: The upper slot pressure plate and the lower slot pressure plate are both provided with a slot on the side facing the wire rope, and the first slot pressure plate and the second slot pressure plate are respectively provided in the slots of the upper slot pressure plate and the lower slot pressure plate.

3. The wire rope vibration isolator according to claim 2, characterized in that: The first groove inner pressure plate and the second groove inner pressure plate are respectively provided with grooves for accommodating the steel wire rope.

4. The wire rope vibration isolator according to claim 3, characterized in that: Alignment holes are evenly arranged between the grooves of the first groove inner pressure plate and the second groove inner pressure plate.

5. The wire rope vibration isolator according to claim 4, characterized in that: The upper card slot pressure plate and the lower card slot pressure plate are respectively provided with alignment holes corresponding to the first slot pressure plate and the second slot pressure plate. The first slot pressure plate is pressed into the card slot of the upper card slot pressure plate and is fixedly connected through the alignment holes. The second slot pressure plate is pressed into the card slot of the lower card slot pressure plate and is fixedly connected through the alignment holes.

6. The method for installing a wire rope vibration isolator according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Wind the wire rope from one end so that the winding direction of the wire rope is opposite to the winding direction on both sides of the symmetrical part in the middle of the mounting hole; S2: Adjust the length of the wire rope, wind it into the overall wire rope frame, and ensure that both ends are long enough to lock with the slots; S3: After the wire rope frame is installed, grind the contact positions of the upper card slot pressure plate, the lower card slot pressure plate, the first slot pressure plate, and the second slot pressure plate to ensure that the contact positions have good flatness; S4: The first slot inner pressure plate and the second slot inner pressure plate respectively press the steel wire rope between the clamping grooves of the upper clamping groove pressure plate and the lower clamping groove pressure plate; S5: After assembly, check whether the wire rope winding is symmetrical and whether the single wire rope loop is approximately circular. If it is not symmetrical, it is necessary to fine-tune the length of the wire rope on both sides and re-fix the alignment hole; S6: Use a feeler gauge to check whether the clearance between the first slot pressure plate, the second slot pressure plate, the upper slot pressure plate, and the lower slot pressure plate meet the requirements. If not, fine-tune the screws of the alignment holes and then re-fix the alignment holes. S7: Connect the assembled vibration isolator to other equipment.

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