CN221074894U

CN221074894U - Energy-absorbing connecting piece

Info

Publication number: CN221074894U
Application number: CN202322668358.9U
Authority: CN
Inventors: 卜倩淼; 张宏松; 钟连德; 申林林; 宁欣鹏; 潘宝林; 张文; 杨梓佟
Original assignee: Beijing Zhongjiao Huaan Technology Co ltd
Current assignee: Beijing Zhongjiao Huaan Technology Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-06-04
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to the technical field of mechanical parts and discloses an energy-absorbing connecting piece, which comprises a first plate body, a second plate body and two connecting plates, wherein one end of each connecting plate is fixedly connected with the first plate body, and the other end of each connecting plate is fixedly connected with the second plate body; the first plate body is provided with two connecting holes which are used for being matched with the bolts, and the two connecting holes are arranged at intervals along the first direction and are communicated through a channel extending along the first direction; the width of the channel is smaller than the maximum radial dimension of the shank portion of the bolt; and taking the direction perpendicular to the first direction in the plane of each connecting hole as a second direction, wherein the maximum dimension of each connecting hole in the first direction is smaller than the maximum dimension in the second direction. The energy-absorbing connecting piece solves the problem that the plate-shaped body is pulled to a lower position when the upright post is bent under the action of external force after the transverse plate-shaped body is connected with the upright post.

Description

Energy-absorbing connecting piece

Technical Field

The utility model relates to the technical field of mechanical parts, in particular to an energy-absorbing connecting piece.

Background

In the related art, when a transverse plate-shaped body is required to be fixed at the upper end of the upright post, the transverse plate-shaped body and the upright post are usually welded together, or a through hole is formed in each of the transverse plate-shaped body and the upright post, and the transverse plate-shaped body and the through hole are connected through bolts and nuts. The two connecting modes have the defects that the position between the transverse platy body and the upright post is unique and definite after the upright post is installed, when the upright post is bent under the action of external force, the transverse platy body fixed on the upper part of the upright post can be pulled to a lower position along with the bending of the upright post and deviate from a preset position, so that the functions of original protection, blocking and the like are not realized.

Disclosure of utility model

The utility model provides an energy-absorbing connecting piece which is used for solving the problem that a plate-shaped body is pulled to a lower position when a stand column is bent under the action of external force after a transverse plate-shaped body is connected with the stand column in the related technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The energy-absorbing connecting piece is used for acting together with the bolt and the nut to fix the transverse extension part at the upper end of the upright post, and comprises a first plate body, a second plate body and two connecting plates, wherein one end of each connecting plate is fixedly connected with the first plate body, and the other end of each connecting plate is fixedly connected with the second plate body; the first plate body is provided with two connecting holes which are used for being matched with the bolts, and the two connecting holes are arranged at intervals along a first direction and are communicated through a channel extending along the first direction; the width of the channel is less than the maximum radial dimension of the shank portion of the bolt;

and taking the direction perpendicular to the first direction in the plane of each connecting hole as a second direction, wherein the maximum dimension of each connecting hole in the first direction is smaller than the maximum dimension in the second direction.

When the energy-absorbing connecting piece provided by the embodiment is used for acting together with the bolt and the nut, and the transverse extension part is fixed at the upper end of the upright post, the first plate body is opposite to the upright post, and the second plate body is positioned at one side of the first plate body, which is away from the upright post; the first direction is parallel to the extending direction of the upright post, the bolt passes through the through hole on the upright post and the connecting hole positioned at the upper part in the first plate body, and the energy-absorbing connecting piece is fixed at the upper end of the upright post by matching the bolt and the nut. And fixing the transverse extension part on one side of the second plate body, which is away from the first plate body. On the one hand, the cavity structure that first plate body, second plate body and two connection plates enclose is established can realize energy-absorbing through self deformation when the collision takes place, buffering. On the other hand, the two ends of the transverse extension part are also fixed on other external structures, when the upright post is bent under the action of external force, the bolt can slide downwards along the channel under the action of the pulling of the external force until moving into the connecting hole at the lower part in the first plate body; therefore, the position of the transverse extension part is reduced or even avoided from being reduced due to the pulling effect when the upright post is bent, and the transverse extension part is kept near the original position as much as possible, so that the original blocking and protecting effects are achieved.

In addition, the maximum size of each connecting hole in the first direction is smaller than the maximum size in the second direction, so that connection between the energy-absorbing connecting piece and the upright post is facilitated while connection reliability is ensured.

Optionally, a connecting hole near the middle part of the first plate body in the first direction in the two connecting holes is a first connecting hole, and the other connecting hole is a second connecting hole; the first connecting hole is a slotted hole.

Optionally, the second connection hole is a slotted hole.

Optionally, the first connection hole is located at a middle portion of the first plate body in the first direction.

Optionally, the first plate body, the second plate body and the two connecting plates are enclosed to form a rectangular structure or a circular structure.

Optionally, the second board body includes two sub-boards, two connecting plates are connected with one sub-board respectively, and two sub-boards are located corresponding one side that the connecting plate deviates from another connecting plate.

Optionally, the thicknesses of the first plate body, the second plate body and the two connecting plates are all greater than or equal to 2.5 mm and less than or equal to 4 mm.

Optionally, the surfaces of the first plate body, the second plate body and the two connecting plates are all provided with anti-corrosion layers.

Optionally, the anticorrosive layer is a zinc aluminum magnesium anticorrosive layer.

Optionally, the thickness of the anticorrosive layer is 16 microns or more.

Drawings

FIG. 1 is a top view of an energy absorbing connector according to an embodiment of the present utility model;

FIG. 2 is a front view of the energy absorbing connector shown in FIG. 1;

FIG. 3 is a top view of an energy absorbing connector according to an embodiment of the present utility model in use;

FIG. 4 is a side view of an energy absorbing connector according to an embodiment of the present utility model in use.

Icon: 1-a first plate body; 11-connecting holes; 12-channel; 2-a second plate; 21-daughter board; 3-connecting plates; 100-bolts; 200-nuts; 300-a laterally extending member; 400-upright posts.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The energy absorbing connector provided in this embodiment is used for acting together with the bolt 100 and the nut 200 to fix the laterally extending member 300 at the upper end of the upright 400, specifically, as shown in fig. 1 and 2, the energy absorbing connector includes a first plate 1, a second plate 2 and two connecting plates 3, where one end of each of the two connecting plates 3 is fixedly connected with the first plate 1, and the other end is fixedly connected with the second plate 2. Wherein, the first plate body 1 is provided with two connecting holes 11 for being matched with the bolts 100, and the two connecting holes 11 are arranged at intervals along the first direction A and are communicated through a channel 12 extending along the first direction A; the width D of the channel 12 is less than the maximum radial dimension of the shank portion of the bolt 100 so that the bolt will not slip down in a normal connected condition.

The largest dimension (i.e. a in the figure) of each connecting hole 11 in the first direction a is smaller than the largest dimension (i.e. B in the figure) in the second direction B with the direction perpendicular to the first direction a in the plane of each connecting hole 11 as the second direction B.

Referring to fig. 3 and 4, when the energy absorbing connector provided in the present embodiment is used together with the bolt 100 and the nut 200 to fix the laterally extending member 300 to the upper end of the column 400, the first plate 1 is opposite to the column 400, and the second plate 2 is located at a side of the first plate 1 facing away from the column 400; the first direction a is parallel to the extending direction of the column 400, the bolt 100 is inserted through the through hole of the column 400 and the connecting hole 11 located at the upper part of the first plate 1, and the bolt 100 is matched with the nut 200 to fix the energy absorbing connector at the upper end of the column 400. The lateral extension member 300 is then fixed to the side of the second plate 2 facing away from the first plate 1. On the one hand, the cavity structure formed by the first plate body 1, the second plate body 2 and the two connecting plates 3 in a surrounding mode can absorb energy and buffer through self deformation when collision occurs. On the other hand, the two ends of the lateral extension member 300 are also fixed to other external structures, and when the upright post 400 is bent under the action of external force, the bolt 100 can slide downwards along the channel 12 under the pulling action of external force until moving into the connecting hole 11 at the lower part of the first plate body 1; therefore, the reduction of the position of the lateral extension member 300 caused by the pulling action when the upright post 400 is bent can be reduced or even avoided, and the lateral extension member 300 is kept near the original position as much as possible, thereby playing the role of blocking and protecting.

In addition, the maximum dimension of each connecting hole 11 in the first direction A is smaller than the maximum dimension in the second direction B, so that the connection between the energy-absorbing connecting piece and the upright post 400 is facilitated while the connection reliability is ensured.

It should be noted that, when the fixing of the lateral extension member 300 to the upper end of the column 400 is achieved, the fixing of the lateral extension member 300 to the second plate body 2 may be performed without being limited to the above-mentioned operation steps, and then the energy-absorbing connector may be fixed to the upper end of the column 400 by the bolt 100 and the nut 200. So long as it is satisfied that the lateral extension member 300 is perpendicular or nearly perpendicular to the column 400 and is located at the top end of the column 400, and the bolt 100 passes through the through hole on the column 400 and the connection hole 11 located at the upper portion in the first plate body 1, the bolt 100 cooperates with the nut 200 to fix the energy absorbing connection member to the upper end of the column 400.

The connecting hole 11 near the middle of the first plate body 1 in the first direction is taken as a first connecting hole 11, and the other connecting hole 11 is taken as a second connecting hole 11, and in an alternative implementation manner, the first connecting hole 11 is a slotted hole so as to facilitate processing. Of course, in other implementations, the first connection holes 11 may also be diamond holes or parallelogram holes.

Further, in a specific implementation manner, the second connecting hole 11 may also be an oblong hole. Of course, in other implementations, the second connection hole 11 may also be a diamond hole or a parallelogram hole, etc.

In particular, when the first plate body 1 is provided with the first connecting hole 11, the first connecting hole 11 may be located in the middle of the first plate body 1 in the first direction, so that the stress is more balanced after the energy-absorbing connecting piece connects between the laterally extending member 300 and the upright 400.

In an alternative implementation manner, the first plate body 1, the second plate body 2 and the two connecting plates 3 are enclosed to form a rectangular structure or a circular structure.

When the first plate 1, the second plate 2, and the two connection plates 3 are formed in a circular structure, the portion of the circular structure to be connected to the column 400 is the first plate 1, the portion to be connected to the laterally extending member 300 is the second plate 2, and the portion to be connected between the two connection plates 3 is the two connection plates.

In another alternative implementation, the second plate body 2 comprises two sub-plates 21, one sub-plate 21 being connected to each of the two connection plates 3, and both sub-plates 21 being located on a side of the respective connection plate 3 facing away from the other connection plate 3.

The first plate body 1, the second plate body 2 and the two connecting plates 3 are illustratively integrally formed. Of course, in other implementations, the first plate body 1, the second plate body 2, and the two connecting plates 3 may be separate structures, that is, the four are separate components, and are fixed together through a connecting assembly.

In a specific implementation manner, the thicknesses of the first plate body 1, the second plate body 2 and the two connecting plates 3 are all greater than or equal to 2.5mm and less than or equal to 4mm, for example, 2.5mm, 2.7mm, 3mm or 4mm, so that the cost is saved as much as possible while the structural strength is ensured.

In an alternative implementation manner, the surfaces of the first plate body 1, the second plate body 2 and the two connecting plates 3 are provided with anti-corrosion layers. In the environment of use, the energy absorbing connector may be corroded by the external medium, resulting in reduced connection reliability and service life. The arrangement of the anti-corrosion layer can reduce the possibility of corrosion of the energy-absorbing connecting piece, even prevent the energy-absorbing connecting piece from corrosion, and is beneficial to ensuring the structural strength and the service life of the energy-absorbing connecting piece.

The corrosion-resistant layer may be a zinc aluminum magnesium corrosion-resistant layer, for example. The zinc-aluminum-magnesium anticorrosive coating is high in corrosion resistance and low in pollution. In addition, the anti-corrosion layer can also adopt a hot dip galvanized anti-corrosion layer, a hot dip galvanized polyester composite anti-corrosion layer, an epoxy zinc-based anti-corrosion layer and the like.

The thickness of the corrosion-resistant layer may be 16 microns or more, for example: the thickness of the anticorrosive layer is 16 mu m, 18 mu m or 20 mu m, etc. so as to achieve good anticorrosive performance and save cost.

The energy-absorbing connecting piece can be made of high-strength steel with the tensile strength of 700Mpa, but is not limited to the high-strength steel, and can be made of steel materials with the tensile strength of 355Mpa or 460Mpa, stainless steel or aluminum alloy materials, and the like.

In a specific implementation manner, the energy-absorbing connecting piece may have a size in the first direction of 300mm, or may have a size of 250mm, 270mm, or the like. The dimension of the first plate body in the direction of the second plate body (i.e. in the thickness direction of the energy absorbing connector) may be 175mm, and the dimension of one end for connecting with the lateral extension member 300 in the direction perpendicular to the first direction and the thickness direction may be 300mm, or may be 320mm or 280mm, etc., so that when the second plate body includes two sub-plates, bolt holes on the two sub-plates are connected with the lateral extension member. The dimension of the end for connection with the pillar may be 80mm, 100mm, 140mm or the like in the direction perpendicular to the above-mentioned first direction and thickness direction. The first plate body can be in a flat plate shape or an arc-shaped plate. When the first plate body is an arc-shaped plate, the arc radius of the arc-shaped plate can be 70mm, 114mm or 156mm, etc.

The upright posts mentioned in this embodiment may be circular or rectangular, and the laterally extending members 300 may be laterally extending rods, flat plates, corrugated plates, or the like.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The energy-absorbing connecting piece is used for acting together with a bolt and a nut to fix the transverse extension part at the upper end of the upright post and is characterized by comprising a first plate body, a second plate body and two connecting plates, wherein one end of each connecting plate is fixedly connected with the first plate body, and the other end of each connecting plate is fixedly connected with the second plate body; the first plate body is provided with two connecting holes which are used for being matched with the bolts, and the two connecting holes are arranged at intervals along a first direction and are communicated through a channel extending along the first direction; the width of the channel is less than the maximum radial dimension of the shank portion of the bolt;

2. The energy absorbing connector of claim 1, wherein one of the two connecting holes near the middle of the first plate body in the first direction is a first connecting hole, and the other connecting hole is a second connecting hole; the first connecting hole is a slotted hole.

3. The energy absorbing connector of claim 2, wherein the second attachment aperture is a slotted aperture.

4. The energy absorbing connector of claim 2, wherein the first connecting aperture is located in a middle of the first plate body in the first direction.

5. The energy absorbing connector of claim 1, wherein the first plate body, the second plate body and the two connecting plates are enclosed in a rectangular or circular configuration.

6. The energy absorbing connector of claim 1, wherein the second plate body comprises two sub-plates, one of the sub-plates is connected to each of the two connection plates, and the two sub-plates are located on a side of the corresponding connection plate facing away from the other connection plate.

7. The energy absorbing connector of any of claims 1-6, wherein the thickness of the first plate body, the second plate body, and both of the connecting plates are 2.5 millimeters or more and 4 millimeters or less.

8. The energy absorbing connector of any of claims 1-6, wherein the surfaces of the first plate body, the second plate body, and both of the connecting plates are each provided with an anti-corrosion layer.

9. The energy absorbing connector of claim 8, wherein the corrosion protection layer is a zinc aluminum magnesium corrosion protection layer.

10. The energy absorbing connector of claim 8, wherein the corrosion protection layer has a thickness of 16 microns or greater.