Soft steel damper

Abstract

The utility model provides a mild steel damper, and relates to the technical field of mild steel dampers. Comprising an upper connecting plate, a lower connecting plate and a plurality of soft steel damping fins, and the two ends of the soft steel damping fins are detachably connected with the upper connecting plate and the lower connecting plate respectively; a rubber friction plate is arranged at the top of the upper connecting plate, a bottom plate and a plurality of supporting balls are arranged at the bottom of the lower connecting plate, and two ends of the supporting balls are connected with the bottom plate and the lower connecting plate respectively; the bottom of the upper connecting plate and the top of the lower connecting plate are each provided with a plurality of limiting blocks arranged at intervals, and an inserting groove is formed between every two adjacent limiting blocks and used for allowing soft steel damping fins to be inserted therein. The plurality of soft steel damping fins and the plurality of limiting blocks are provided with mounting holes for mounting the screw rods, and the screw rods penetrate through the soft steel damping fins and the limiting blocks in a crossed manner. By adopting the soft steel damper, the problems of welding residual stress, welding defects, thermal deformation and the like due to the fact that the steel damping fins are fixed with the upper connecting plate and the lower connecting plate in a welding mode in a traditional soft steel damper can be solved, and the fatigue life of the soft steel damper is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of mild steel dampers, and in particular to a mild steel damper. Background Art

[0002] A mild steel damper is a mechanical device used to reduce shock and vibration. It uses the elasticity and friction characteristics of mild steel materials to allow the deformation of the damper to convert mechanical energy into heat and sound energy, thereby achieving the effects of shock absorption, vibration reduction and deceleration.

[0003] The working principle of the mild steel damper can be divided into two parts: elastic deformation and friction damping. In the case of shock or vibration, the mild steel damper can undergo reversible deformation within the elastic limit, generate internal stress, and thus absorb the incoming mechanical energy. At the same time, the mechanical energy is converted into heat and sound energy through friction, which is achieved through the friction between the mild steel materials.

[0004] Mild steel dampers are widely used in bridges, buildings and vehicles to provide better safety and comfort in the event of shock or vibration. It not only improves the disaster resistance of the structure, but also saves a considerable proportion of construction costs compared to traditional structural design methods.

[0005] The utility model patent with the authorization announcement number CN215107788U disclosed in the Chinese patent literature discloses a "metal mild steel damper", and specifically discloses that it includes a main body, and the rolling support isolation effect can be achieved through the mutual cooperation of the first steel plate and the second steel plate. When the device is subjected to vibration and shaking, part of the energy input by the earthquake is dissipated through the solid sliding friction between the upper connecting steel plate and the rubber friction plate. At the same time, the positioning hole is used to facilitate the disassembly of the friction steel plate and the upper connecting steel plate, so that the rubber friction plate can be replaced. The seismic isolation tube can convert the vibration force generated by the building during the earthquake into the lateral displacement of the seismic isolation tube, so that the seismic wave cannot be transmitted to the upper structure, thereby reducing the damage to the building caused by the earthquake. When the main body shakes, the first steel plate is subjected to force and shakes left and right with the main body, so that the entire damper structure reduces its structural dimensions in the shock absorption direction on the basis of ensuring its energy consumption performance, and at the same time increases the structural stiffness to supplement the output of the damper.

[0006] However, the prior art disclosed in the patent uses welding to fix the steel damping plate to the upper and lower connecting plates. This method has problems such as welding residual stress, welding defects, thermal deformation, etc., which can easily cause mechanical fatigue of the steel damper and lead to a short service life. Utility Model Content

[0007] The main purpose of the present application is to provide a mild steel damper which can, on the basis of controlling the out-of-plane buckling of the mild steel damping sheet, overcome the problems of welding residual stress, welding defects, thermal deformation, etc. in the traditional mild steel damper which fixes the steel damping sheet to the upper and lower connecting plates by welding, thereby improving the fatigue life of the mild steel damper.

[0008] In order to solve the aforementioned technical problems, the present application provides a mild steel damper, comprising an upper connecting plate, a lower connecting plate and a plurality of mild steel damping sheets, wherein the two ends of the plurality of mild steel damping sheets are detachably connected to the upper connecting plate and the lower connecting plate respectively; a rubber friction sheet is provided on the top of the upper connecting plate, a bottom plate and a plurality of supporting balls are provided on the bottom of the lower connecting plate, and the two ends of the plurality of supporting balls are respectively connected to the bottom plate and the lower connecting plate;

[0009] A plurality of spaced limit blocks are provided at the bottom of the upper connecting plate and the top of the lower connecting plate. The gap distance between any two adjacent limit blocks is equal to the thickness of the mild steel damping sheet. A slot is formed between two adjacent limit blocks for inserting the mild steel damping sheet.

[0010] A plurality of mild steel damping sheets and a plurality of limiting blocks are all provided with mounting holes for mounting screw rods, and the screw rods cross-penetrate the mild steel damping sheets and the limiting blocks.

[0011] Optionally, in some embodiments of the present invention, the number of the rubber friction sheets is two, which are spaced apart on the top of the upper connecting plate.

[0012] Optionally, in some embodiments of the present invention, the rubber friction plate and the upper connecting plate are detachably connected via bolts.

[0013] Optionally, in some embodiments of the present invention, a friction steel plate is detachably provided on the top of the rubber friction plate.

[0014] Optionally, in some embodiments of the utility model, reinforcing plates are provided at intervals on the outer sides of the above-mentioned plurality of mild steel damping sheets, and two ends of the reinforcing plates are respectively fixedly connected to the upper connecting steel plate and the lower connecting steel plate.

[0015] Optionally, in some embodiments of the present invention, the reinforcing plate is an arc-shaped structure.

[0016] Optionally, in some embodiments of the present invention, a seismic isolation member is provided at the bottom of the lower connecting plate, and the seismic isolation member is arranged to be spaced apart from the bottom plate.

[0017] Optionally, in some embodiments of the present invention, the reinforcing plate passes through the lower connecting plate and is connected to the seismic isolation member.

[0018] Optionally, in some embodiments of the present invention, the bottom plate is provided with a groove for placing the supporting balls.

[0019] Optionally, in some embodiments of the present invention, the mild steel damping sheet is an X-shaped, triangular, rectangular, hyperbolic, dumbbell-shaped or diamond-shaped rectangular plate with holes.

[0020] The beneficial effects that can be achieved by this application.

[0021] A soft steel damper proposed in an embodiment of the present application places a plurality of support balls on the top of a base plate, and the support balls are used to support a lower connecting plate. When the base plate shakes, the support balls drive the lower connecting plate to move left and right, thereby increasing the structural stiffness of the entire damper structure and supplementing the output of the damper while ensuring its energy consumption performance.

[0022] By arranging a rubber friction sheet on the top of the upper connecting plate, when the device is subjected to vibration and shaking, part of the energy input by the earthquake is dissipated through the solid sliding friction between the upper connecting steel plate and the rubber friction sheet.

[0023] By setting mounting holes on several mild steel damping sheets and several limit blocks, when the mild steel damping sheets are inserted into the slots, the screws pass through the mild steel damping sheets and the limit blocks to realize the detachable connection between the mild steel damping sheets and the upper connecting plates and the lower connecting plates. The conventional mild steel damper uses welding to fix the steel damping sheets to the upper and lower connecting plates, which results in welding residual stress, welding defects, thermal deformation and other problems, and the fatigue life of the mild steel damper is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a mild steel damper provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the structure of a mild steel damping sheet provided in an embodiment of the utility model;

[0026] Figure 3 A top view of a base plate provided in an embodiment of the utility model;

[0027] Icon: 1-upper connecting plate, 2-lower connecting plate, 3-mild steel damping plate, 4-rubber friction plate, 5-bottom plate, 6-support ball, 7-limit block, 8-mounting hole, 9-screw, 10-friction steel plate, 11-reinforcement plate, 12-seismic isolation member, 13-groove,

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0034] In order to achieve the above objectives,

[0035] Reference Figure 1The embodiment of the present application provides a mild steel damper, comprising an upper connecting plate 1, a lower connecting plate 2 and a plurality of mild steel damping sheets 3, the two ends of the plurality of mild steel damping sheets 3 are detachably connected to the upper connecting plate 1 and the lower connecting plate 2 respectively; a rubber friction sheet 4 is provided on the top of the upper connecting plate 1, a bottom plate 5 and a plurality of supporting balls 6 are provided on the bottom of the lower connecting plate 2, the two ends of the plurality of supporting balls 6 are respectively connected to the bottom plate 5 and the lower connecting plate 2;

[0036] A plurality of spaced-apart limit blocks 7 are provided at the bottom of the upper connecting plate 1 and the top of the lower connecting plate 2. The gap distance between any two adjacent limit blocks 7 is equal to the thickness of the mild steel damping sheet 3. A slot is formed between two adjacent limit blocks 7 for inserting the mild steel damping sheet 3.

[0037] The plurality of mild steel damping sheets 3 and the plurality of limit blocks 7 are all provided with mounting holes 8 for mounting screw rods 9 , and the screw rods 9 cross-penetrate the mild steel damping sheets 3 and the limit blocks 7 .

[0038] The present embodiment is provided with a bottom plate 5, a supporting ball 6, a lower connecting plate 2, a mild steel damping plate 3, an upper connecting plate 1 and a rubber friction plate 4 from bottom to top;

[0039] The bottom of the upper connecting plate 1 and the top of the lower connecting plate 2 are both provided with limit blocks 7 for installing the mild steel damping sheet 3. A slot is formed between two adjacent limit blocks 7. Both ends of the mild steel damping sheet 3 are inserted into the slot, thereby achieving preliminary fixation of the mild steel damping sheet 3.

[0040] By placing multiple support balls 6 on the top of the base plate 5, the support balls 6 are used to support the lower connecting plate 2. When the base plate 5 shakes, the support balls 6 drive the lower connecting plate 2 to move left and right, thereby increasing the structural stiffness of the entire damper structure and supplementing the output of the damper while ensuring its energy consumption performance.

[0041] By arranging a rubber friction sheet 4 on the top of the upper connecting plate 1 , when the device is subjected to vibration and shaking, part of the energy input by the earthquake is dissipated through the solid sliding friction between the upper connecting steel plate and the rubber friction sheet 4 .

[0042] By setting mounting holes 8 on a plurality of mild steel damping sheets 3 and a plurality of limit blocks 7, when the mild steel damping sheets 3 are inserted into the slots, the mounting holes 8 of the mild steel damping sheets 3 and the mounting holes 8 of the limit blocks 7 are located on the same axis, and the screw rods 9 pass through the mild steel damping sheets 3 and the limit blocks 7, thereby realizing the detachable connection between the mild steel damping sheets 3 and the upper connecting plates 1 and the lower connecting plates 2, respectively. The conventional mild steel damper uses welding to fix the steel damping sheets to the upper and lower connecting plates 2, which results in welding residual stress, welding defects, thermal deformation, and other problems, thereby improving the fatigue life of the mild steel damper.

[0043] There may be two rubber friction sheets 4 , which are spaced apart on the top of the upper connecting plate 1 .

[0044] The rubber friction plate 4 is detachably connected to the upper connecting plate 1 by bolts, so as to facilitate the maintenance or replacement of the rubber friction plate 4;

[0045] A friction steel plate 10 is detachably provided on the top of the rubber friction plate 4 , and the friction steel plate 10 and the rubber friction plate 4 can be penetrated by a group of bolts at the same time to achieve a detachable connection of the friction steel plate 10 , so as to facilitate the maintenance or replacement of the friction steel plate 10 .

[0046] The limiting block 7 can be installed on the top of the upper connecting plate 1 or the top of the lower connecting plate 2 by welding or other methods.

[0047] As an optional implementation, a plurality of mild steel damping sheets 3 of the present embodiment are spaced apart on the outer sides thereof with reinforcing plates 11, and the two ends of the reinforcing plates 11 are respectively fixedly connected to the upper connecting steel plate and the lower connecting steel plate; on the one hand, the vertical damping effect of the damping structure can be enhanced, and on the other hand, the out-of-plane buckling of the mild steel damping sheet 3 can be effectively controlled.

[0048] The reinforcing plate 11 is an arc-shaped structure, which can prevent it from undergoing large deformation and further control the out-of-plane buckling of the mild steel damping sheet 3;

[0049] The bottom of the lower connecting plate 2 is provided with a seismic isolation member 12, and the seismic isolation member 12 is arranged at intervals from the bottom plate 5. The reinforcing plate 11 passes through the lower connecting plate 2 and is connected to the seismic isolation member 12 to enhance the damping effect.

[0050] As an optional implementation, the bottom plate 5 of this embodiment is provided with a groove 13 for placing the supporting ball 6.

[0051] In this embodiment, the groove 13 is provided to limit the movement range of the support ball 6 , thereby preventing the support ball 6 from directly falling off the bottom plate 5 and the lower connecting plate 2 .

[0052] As an optional implementation, the mild steel damping plate 3 of this embodiment is an X-shaped, triangular, rectangular, hyperbolic, dumbbell-shaped or diamond-shaped rectangular plate with holes; the material of the mild steel damping plate 3 can be mild steel with a yield strength of 160MPa-355MPa.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments and that the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application.

Claims

1. A mild steel damper, comprising an upper connecting plate, a lower connecting plate and a plurality of mild steel damping sheets, wherein two ends of the plurality of mild steel damping sheets are detachably connected to the upper connecting plate and the lower connecting plate, respectively; characterized in that: The top of the upper connecting plate is provided with a rubber friction sheet, the bottom of the lower connecting plate is provided with a bottom plate and a plurality of supporting balls, and the two ends of the plurality of supporting balls are respectively connected to the bottom plate and the lower connecting plate; A plurality of spaced-apart limit blocks are provided at the bottom of the upper connecting plate and the top of the lower connecting plate, the gap distance between any two adjacent limit blocks is equal to the thickness of the mild steel damping sheet, and a slot is formed between any two adjacent limit blocks for inserting the mild steel damping sheet; A plurality of the mild steel damping sheets and a plurality of the limiting blocks are each provided with a mounting hole for mounting a screw rod, and the screw rod crosses and penetrates the mild steel damping sheets and the limiting blocks.

2. The mild steel damper according to claim 1, characterized in that: The number of the rubber friction sheets is two, and the top of the upper connecting plate is arranged at intervals.

3. The mild steel damper according to claim 1, characterized in that: The rubber friction plate is detachably connected to the upper connecting plate via bolts.

4. The mild steel damper according to claim 1, characterized in that: A friction steel plate is detachably arranged on the top of the rubber friction plate.

5. The mild steel damper according to claim 1, characterized in that: Reinforcement plates are arranged at intervals on the outer sides of a plurality of the mild steel damping sheets, and two ends of the reinforcement plates are respectively fixedly connected to the upper connecting steel plate and the lower connecting steel plate.

6. The mild steel damper according to claim 5, characterized in that: The reinforcing plate is an arc-shaped structure.

7. The mild steel damper according to claim 5, characterized in that: A shock isolating member is disposed at the bottom of the lower connecting plate, and the shock isolating member is disposed spaced apart from the bottom plate.

8. The mild steel damper according to claim 7, characterized in that: The reinforcing plate passes through the lower connecting plate and is connected to the seismic isolation member.

9. The mild steel damper according to claim 1, characterized in that: The bottom plate is provided with a groove for placing the supporting ball.

10. The mild steel damper according to claim 1, characterized in that: The mild steel damping sheet is an X-shaped, triangular, rectangular, hyperbolic, dumbbell-shaped or diamond-shaped rectangular plate with holes.

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