CN112064507B - Vertical impact buffering device - Google Patents

Vertical impact buffering device Download PDF

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Publication number
CN112064507B
CN112064507B CN202010792989.XA CN202010792989A CN112064507B CN 112064507 B CN112064507 B CN 112064507B CN 202010792989 A CN202010792989 A CN 202010792989A CN 112064507 B CN112064507 B CN 112064507B
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China
Prior art keywords
plate
shaped spring
free ends
spring
slide
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Active
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Chinese (zh)
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CN112064507A (en
Inventor
刘鹏飞
王东辉
荆国强
王梓宇
吴肖波
王翔
周志昆
马长飞
钱玉山
廖远
李鑫
龚金才
刘永酃
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China Railway Major Bridge Engineering Group Co Ltd MBEC
China Railway Bridge Science Research Institute Ltd
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China Railway Major Bridge Engineering Group Co Ltd MBEC
China Railway Bridge Science Research Institute Ltd
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Priority to CN202010792989.XA priority Critical patent/CN112064507B/en
Publication of CN112064507A publication Critical patent/CN112064507A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention relates to the technical field of vibration reduction and buffering, and particularly discloses a vertical impact buffering device. This vertical buffer includes: a plate spring in an arc shape having two free ends, each of the free ends being provided with at least one pulley; the sliding way is arranged along the extension direction of the plate-shaped spring and matched with the pulleys, so that the pulleys at the two free ends can slide on the sliding way; the damper is connected with two free ends of the plate-shaped spring respectively at two ends and used for providing resistance for restraining the plate-shaped spring from being stretched under compression. The problem that when a steel beam is erected in the prior art, the steel beam or a pier can be greatly damaged due to the impact effect, the construction safety is influenced due to the impact effect, and the large potential safety hazard is generated can be solved.

Description

Vertical impact buffering device
Technical Field
The invention relates to the technical field of vibration reduction and buffering, in particular to a vertical impact buffering device.
Background
The impact and collision problem is a mechanical problem widely encountered in the bridge engineering construction process, for example, the impact collision between a hoisting weight and a working platform often occurs in large hoisting construction, especially in the cross-sea bridge construction process.
In order to reduce the offshore operation time as much as possible, the simply supported steel beams are generally prefabricated and assembled in a factory and erected in the whole hole of the bridge position by using a floating crane. In the process of erecting the steel beam, the steel beam can generate a large vertical impact effect on the pier when falling from the beam under the influence of a complex marine environment (wind, wave and current) at the bridge site of the cross-sea bridge.
Because the girder steel quality is great, the impact action is comparatively showing, probably produce great damage to girder steel or pier, the impact action influences construction safety simultaneously, if not with reasonable control, will produce great potential safety hazard, often can be very careful the roof beam that falls now, avoid the striking, but can seriously influence the efficiency of construction like this.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a vertical impact buffering device which can solve the problems that when a steel beam is erected in the prior art, the steel beam or a pier can be greatly damaged by impact action, and meanwhile, construction safety is influenced by the impact action, and great potential safety hazards are generated.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the invention provides a vertical impact buffering device, which is characterized by comprising:
a plate spring in an arc shape having two free ends, each of the free ends being provided with at least one pulley;
a slide way which is arranged along the extension direction of the plate-shaped spring and is matched with the pulleys, and the pulleys at the two free ends can slide on the slide way;
and the two ends of the damper are respectively connected with the two free ends of the plate-shaped spring and are used for providing resistance for restraining the plate-shaped spring from being compressed and stretched.
On the basis of the technical scheme, the adjustable plate spring further comprises an adjusting device which is connected with the two free ends of the plate spring and used for adjusting the initial working radian of the plate spring.
On the basis of the above technical solution, the adjusting device includes:
an adjusting rod, the length of which is adjustable;
and the two springs are respectively arranged on two sides of the adjusting rod and are connected with the two free ends.
On the basis of the technical scheme, the two ends of the slide way are also provided with limiting parts for limiting the maximum length of the plate-shaped spring when the plate-shaped spring is pressed to extend.
On the basis of the technical scheme, the spring fixing device further comprises a limiting frame, wherein the limiting frame is sleeved on the outer side of the plate-shaped spring, and the height of the limiting frame is smaller than that of the plate-shaped spring.
On the basis of the technical scheme, the limiting frame is a cuboid frame.
On the basis of the technical scheme, the limiting frame is a cuboid frame consisting of 12 connecting rods, and the slide way is clamped in the limiting frame which is positioned in one face and the opposite connecting rods.
On the basis of the technical scheme, the cuboid frame is a rigid material part.
On the basis of the technical scheme, each free end is provided with two pulleys at intervals, the slide way comprises two slide rails, and the slide rails are matched with the pulleys in the extension direction of the plate-shaped spring.
On the basis of the technical scheme, the damper is a displacement-dependent or velocity-dependent damper.
Compared with the prior art, the invention has the advantages that: when the vertical impact buffering device is used, the vertical impact buffering device is arranged between an impact object and an impact platform, when the impact object falls, the vertical impact buffering device is firstly contacted with a plate-shaped spring, the radian of the plate-shaped spring is increased along with the downward pressing of the impact object, a pulley below the plate-shaped spring slides on a slide way, the elasticity of the plate-shaped spring realizes the buffering function of the buffer, after the vertical impact is converted into the transverse impact, the deformation of the plate-shaped spring drives the damper to work, the energy consumption function of the buffer is realized, the energy of the impact object is absorbed, and the impact object is enabled to land quickly and safely. The problem that when the steel beam is erected, the steel beam or a pier is possibly damaged greatly due to the fact that the steel beam or the pier is large in mass and impact action, construction safety is affected by the impact action, and large potential safety hazards are generated is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a vertical shock absorber according to an embodiment of the present invention.
In the figure: 1. a plate-shaped spring; 11. a pulley; 2. a slideway; 21. a slide rail; 3. a damper; 4. an adjustment device; 41. adjusting a rod; 42. a spring; 5. a limiting frame; 51. a connecting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a vertical shock absorber according to an embodiment of the present invention. As shown in fig. 1, the present invention provides a vertical impact buffering device, including:
a plate spring 1, which is arc-shaped and has two free ends, each free end being provided with at least one pulley 11; a slideway 2 which is arranged along the extension direction of the plate-shaped spring 1 and is matched with the pulleys 11, and can enable the pulleys 11 at two free ends to slide on the slideway 2; and a damper 3, two ends of which are respectively connected with two free ends of the plate spring 1, for providing resistance for restraining the plate spring 1 from being compressed and extended.
When the vertical impact buffering device is used, the vertical impact buffering device is arranged between an impact object and an impact platform, when the impact object falls, the vertical impact buffering device is firstly contacted with the plate-shaped spring 1, the radian of the plate-shaped spring 1 is increased along with the impact of the impact object, the pulley 11 below the plate-shaped spring 1 slides on the slideway 2, the elasticity of the plate-shaped spring 1 realizes the buffering function of the buffer, after the vertical impact is converted into the transverse impact, the deformation of the plate-shaped spring 1 drives the damper 3 to work, the energy consumption function of the buffer is realized, the energy of the impact object is absorbed, and the impact object is enabled to land quickly and safely. The problem that when the steel beam is erected, the steel beam or the pier is possibly damaged greatly due to the impact action, the construction safety is influenced by the impact action, and large potential safety hazards are generated is solved.
In some alternative embodiments, the vertical shock absorbing device further comprises an adjusting device 4 connecting the two free ends of the plate spring 1 for adjusting the initial arc of operation of the plate spring 1.
In this embodiment, the radian of the plate spring 1 can be adjusted by tightening or loosening the adjusting device 4, so as to adjust the stiffness of the damping device, thereby widening the applicable range.
In some alternative embodiments, the adjustment device 4 comprises: an adjusting lever 41 whose length is adjustable; two springs 42 are also included, which are respectively disposed on both sides of the adjusting lever 41 and connected to both free ends.
In the present embodiment, when the rigidity of the entire shock absorber is required, it can be achieved by adjusting the adjustment lever 41. Specifically, the reduction of the rigidity of the damper is achieved by extending the length of the adjustment lever 41, and the increase of the rigidity of the damper is achieved by reducing the length of the adjustment lever 41. In addition, the springs 42 on both sides of the adjusting rod 41 can also realize the buffer absorption of the energy of the impact object.
In some alternative embodiments, the two ends of the slideway 2 are further provided with a limiting member for limiting the maximum length of the plate spring 1 which can be extended under pressure.
In this embodiment, the two ends of the slide way 2 are further provided with a limiting member for limiting the maximum length of the plate spring 1 that is extended under pressure. Due to the design, the plate spring 1 can be prevented from exceeding the elastic deformation range, and the loss that the plate spring 1 cannot restore to the original shape is avoided.
In some optional embodiments, the spring support further comprises a limiting frame 5, the limiting frame is sleeved outside the plate-shaped spring 1, and the height of the limiting frame 5 is smaller than that of the plate-shaped spring 1.
In this embodiment, a limiting frame 5 is disposed on the outer side of the plate spring 1, and the limiting frame 5 is higher than the plate spring 1, so that when the impact force applied to the plate spring 1 is greater than the bearing range of the whole buffering device, the plate spring 1 is supported by the limiting frame 5, and the plate spring 1 is prevented from exceeding the elastic deformation range, so that the plate spring 1 is prevented from being crushed and causing inelastic deformation.
In some alternative embodiments, the limiting frame 5 is a rectangular parallelepiped frame. The cuboid frame is simple in structure and manufacturing process, and the problem of inelastic deformation caused by crushing of the plate-shaped spring 1 can be solved.
In some optional embodiments, the limiting frame 5 is a rectangular frame consisting of 12 connecting rods 51, and the slide rail 2 is clamped in the connecting rod 51 which is located on one side and opposite to the limiting frame 5.
In this embodiment, the slide rail 2 is clamped in the connecting rod 51 of the limiting frame 5, which is located on one side and opposite to the limiting frame, and can play a role in limiting the position of the pulley 11, that is, limiting the maximum extension length of the plate spring 1.
In some alternative embodiments, the rectangular parallelepiped frame is a rigid piece of material. In this embodiment, the rectangular frame is made of a rigid material and can bear a certain impact force. In other embodiments, an elastic material may be used, and the height of the elastic material is greater than the height of the plate spring 1 after the plate spring 1 is extended, so that when the plate spring 1 is extended to bear an impact, the elastic material can bear the impact together with the plate spring 1 to play a role in buffering.
In some alternative embodiments, each free end is provided with two pulleys 11 at intervals, the slideway 2 comprises two slide rails 21, and the slide rails 21 are arranged along the extension direction of the plate spring 1 and matched with the pulleys 11. In this embodiment, two slide rails 21 are provided to further stabilize the plate spring 1, and no additional auxiliary stabilizing device is required. Of course, in other embodiments, more than one slide rail 21 may be used. A slide rail 21 can be adopted and provided with other auxiliary stabilizing devices, and the same effect can be achieved,
in some alternative embodiments, the damper 3 is a displacement-dependent or velocity-dependent type damper. The displacement-dependent or velocity-dependent damper can achieve rapid absorption of the lateral impact force converted from the vertical impact force received by the plate spring 1.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A vertical impact cushioning device, comprising:
a plate-shaped spring (1) which is arc-shaped and has two free ends, each of which is provided with at least one pulley (11);
a slideway (2) which is arranged along the extension direction of the plate-shaped spring (1) and matched with the pulleys (11) and can enable the pulleys (11) at the two free ends to slide on the slideway (2);
a damper (3) with two ends respectively connected with two free ends of the plate-shaped spring (1) and used for providing resistance for inhibiting the plate-shaped spring (1) from being compressed and stretched;
the adjusting device (4) is connected with two free ends of the plate-shaped spring (1) and is used for adjusting the initial working radian of the plate-shaped spring (1);
an adjusting rod (41) with adjustable length;
two springs (42) respectively arranged at two sides of the adjusting rod (41) and connected with the two free ends;
the limiting frame (5) is sleeved on the outer side of the plate-shaped spring (1), and the height of the limiting frame (5) is smaller than that of the plate-shaped spring (1); the limiting frame (5) is a cuboid frame.
2. A vertical shock absorbing device as claimed in claim 1, wherein: and limiting parts are further arranged at two ends of the slide way (2) and used for limiting the maximum length of the plate-shaped spring (1) in a pressed and extended mode.
3. A vertical shock absorbing device as claimed in claim 1, wherein: spacing (5) are the cuboid frame of constituteing by 12 connecting rods (51), slide (2) card is established spacing (5) are located one side and relative connecting rod (51).
4. A vertical shock absorbing device as claimed in claim 1, wherein: the cuboid frame is a rigid material part.
5. A vertical shock absorbing device as claimed in claim 1, wherein: every the free end interval is equipped with two pulley (11), slide (2) include two slide rail (21), slide rail (21) are followed plate spring (1) extension direction matches pulley (11) set up.
6. A vertical shock absorbing device as claimed in claim 1, wherein: the damper (3) is a displacement-dependent or velocity-dependent damper.
CN202010792989.XA 2020-08-07 2020-08-07 Vertical impact buffering device Active CN112064507B (en)

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