Column and support system

Abstract

The present application relates to a kind of column and supporting system. Wherein, column includes cylinder, movable column, baffle and elastic block, the cylinder has first cavity, the movable column is slidably arranged in the first cavity along first direction, movable column separates the first cavity into cylinder lower cavity and cylinder upper cavity, movable column is equipped with second cavity, the baffle is arranged in the second cavity, the baffle separates the second cavity into first chamber and second chamber, the baffle is equipped with through-hole, the through-hole is communicated the first chamber and second chamber, the second chamber is communicated with the cylinder lower cavity, the elastic block is arranged in the first chamber. The column of the present application can quickly absorb a part of impact energy, timely response to impact load caused by impact ground pressure, can avoid sudden impact load to make cylinder to expand and damage, leading to supporting failure of roadway, roadway shrinkage deformation, ensure the effect of anti-bump, ensure effective support to roadway, long service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining face support, in particular to a column and a support system. BACKGROUND

[0002] With the increasing depth of coal mining, the risk of coal and rock impact is huge, and complex stratum conditions, ultra-high ground stress, and ultra-strong mining pressure lead to frequent rock burst accidents. Simply relying on improving the support strength of the roadway cannot solve the problem of rock burst in the roadway. Even if a large-flow safety valve is installed in the anti-burst column of part of the roadway, when there is rock burst in the coal mining face, the column cannot release the impact energy in time due to the difficulty of the safety valve in opening in time, and it is difficult to cope with the strong dynamic load brought by the rock burst, which causes the column to be damaged, the support effect of the column on the roadway to be poor, and the roadway to shrink and deform. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a column which can quickly absorb part of the impact energy and cope with the impact load brought by the rock burst in time, can avoid the sudden impact load from causing the cylinder to expand and be damaged, leading to the failure of support on the roadway and the shrinkage and deformation of the roadway, ensures the anti-burst effect and effective support on the roadway, and has a long service life.

[0004] The embodiments of the present application also propose a support system.

[0005] The column of the embodiments of the present application comprises:

[0006] a cylinder body having a first cavity, the cylinder body extending along a first direction, the first cavity having a first end portion and a second end portion opposite in the first direction, the first end portion being open;

[0007] a movable column slidably arranged in the first cavity along the first direction, the movable column separating the first cavity into a lower cylinder cavity and an upper cylinder cavity, the lower cylinder cavity being adjacent to the second end portion relative to the upper cylinder cavity in the first direction, the movable column being provided with a second cavity;

[0008] a baffle arranged in the second cavity, the baffle separating the second cavity into a first chamber and a second chamber, the baffle being provided with a through hole, the through hole communicating the first chamber and the second chamber, the second chamber communicating with the lower cylinder cavity; and

[0009] an elastic block arranged in the first chamber.

[0010] The post of the embodiment of the present application can quickly absorb part of impact energy, timely cope with impact load caused by impact ground pressure, avoid burst impact load to cause cylinder expansion and damage, and cause support failure of the roadway, shrinkage and deformation of the roadway, ensure impact prevention effect, ensure effective support of the roadway, and have long service life.

[0011] In some embodiments, the elastic block is a sphere.

[0012] In some embodiments, the elastic block comprises a rubber ball and silicon oil, the rubber ball is provided with a closed third cavity, the third cavity is located at the center of the rubber ball, and the third cavity is filled with the silicon oil.

[0013] In some embodiments, the second cavity of the post is provided with a mounting groove on an inner wall surface thereof.

[0014] The post further comprises a retaining ring, the retaining ring is fitted in the mounting groove, one side of the retaining plate in the first direction abuts against the retaining ring, the other side of the retaining plate in the first direction abuts against the elastic block, and the retaining ring comprises at least three annular blocks.

[0015] The support system of the embodiment of the present application comprises the post of any one of the above-mentioned embodiments.

[0016] The support system of the embodiment of the present application can quickly absorb part of impact energy, timely cope with impact load caused by impact ground pressure, avoid burst impact load to cause cylinder expansion and damage, and cause support failure of the roadway, shrinkage and deformation of the roadway, ensure impact prevention effect, ensure effective support of the roadway, and have long service life.

[0017] In some embodiments, the support system further comprises:

[0018] A top beam, one side of the top beam in a first direction is connected with the post; and

[0019] A collapse energy-absorbing assembly, the collapse energy-absorbing assembly comprises a first plate and a collapse energy-absorbing piece, one side of the collapse energy-absorbing piece in a first direction is connected with the first plate, the other side of the collapse energy-absorbing piece in the first direction is connected with the top beam, a plurality of parts of the collapse energy-absorbing piece in a second direction are spaced apart from each of the first plate and the top beam, the second direction is perpendicular to the first direction, and the plurality of parts are spaced apart in the second direction.

[0020] In some embodiments, the collapse energy-absorbing piece is a corrugated steel plate.

[0021] In some embodiments, the extension direction of the collapse energy-absorbing piece and the extension direction of the top beam are parallel or perpendicular.

[0022] In some embodiments, the number of the collapse energy absorption assemblies is multiple, and the multiple collapse energy absorption assemblies are sequentially stacked in the first direction, and the collapse energy absorption pieces of two adjacent collapse energy absorption assemblies are arranged in axial symmetry with the first plate adjacent to the roof beam in the first direction as the center.

[0023] In some embodiments, the collapse energy absorption assembly further comprises:

[0024] a bottom plate, one side of the bottom plate being connected with the roof beam, and the other side of the bottom plate being connected with the other end of the collapse energy absorption piece; and

[0025] a side plate, the edge of the collapse energy absorption piece being provided with the side plate, one end of the side plate in the first direction being connected with the first plate, and the other end of the side plate in the first direction being connected with the bottom plate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of a stand column of an embodiment of the present application;

[0027] Figure 2 is a structural schematic diagram of a support system of an embodiment of the present application;

[0028] Figure 3 is a structural schematic diagram of a collapse energy absorption assembly of an embodiment of the present application;

[0029] Figure 4 is a schematic diagram of a support system in a working state of an embodiment of the present application;

[0030] REFERENCE SIGNS:

[0031] support system 100;

[0032] stand column 1, cylinder 11, first end portion 111, second end portion 112, lower cavity of cylinder 113, piston rod 12, first cavity 121, second cavity 122, baffle plate 13, through hole 131, elastic block 14, baffle ring 15;

[0033] roof beam 2, collapse energy absorption assembly 3, first plate 31, collapse energy absorption piece 32, first cavity 321, second cavity 322, bottom plate 33, side plate 34;

[0034] roadway 200. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0036] AsFigure 1 As shown, the column 1 of the embodiment of the present application comprises a cylinder body 11, a piston rod 12, a baffle 13 and an elastic block 14. The cylinder body 11 has a first cavity, the cylinder body 11 extends along a first direction (for example, the up-down direction in the figure) Figure 1 ), the first cavity has a first end 111 and a second end 112 opposite to each other in the first direction, and the first end 111 is open. The piston rod 12 is slidably arranged in the first cavity along the first direction, the piston rod 12 divides the first cavity into a lower cylinder cavity 113 and an upper cylinder cavity, the lower cylinder cavity 113 is adjacent to the second end 112 in the first direction relative to the upper cylinder cavity, and the piston rod 12 is provided with a second cavity. The baffle 13 is arranged in the second cavity, the baffle 13 divides the second cavity into a first chamber 121 and a second chamber 122, the baffle 13 is provided with a through hole 131, the through hole 131 connects the first chamber 121 and the second chamber 122, the second chamber 122 is communicated with the lower cylinder cavity 113; and the elastic block 14 is arranged in the first chamber 121.

[0037] The column 1 of the embodiment of the present application is used in a roadway 200, one end (for example, the lower end in the figure) Figure 1 ) of the column 1 in the first direction abuts against the floor of the roadway, the other end (for example, the upper end in the figure) Figure 1 ) of the column 1 in the first direction abuts against the roof of the roadway, and the column 1 supports the roadway 200. Before supporting, the lower cylinder cavity 113 of the column 1 of the embodiment of the present application is filled with liquid, so that the piston rod 12 is in an extended state.

[0038] In the working state of the column 1 of the embodiment of the present application, when the roof of the roadway is subjected to impact ground pressure, the impact load of the roof of the roadway is transmitted to the column 1, the pressure of the column 1 increases rapidly, the piston rod 12 is compressed and moves in the direction of the one end (for example, the lower end in the figure) Figure 1 ) of the column 1, extruding the lower cylinder cavity 113, and the pressure of the liquid in the lower cylinder cavity 113 increases rapidly. With the increase of the liquid pressure in the lower cylinder cavity 113, the liquid pressure in the second chamber 122 and the first chamber 121 of the piston rod 12 increases synchronously, and the liquid with increased pressure in the first chamber 121 transmits part of the pressure to the elastic block 14, the elastic block 14 is compressed and deformed under force, the volume of the elastic block 14 continuously decreases, the transfer of part of the pressure of the liquid in the lower cylinder cavity 113 is realized, and the buffering and energy absorption of the column 1 are realized. That is, when the column 1 is subjected to the impact load of the roof of the roadway, the column 1 releases part of the impact load (impact ground pressure) acting on the column 1 by the extrusion and deformation of the elastic block 14.

[0039] And, the related art adopts a piston to separate the second cavity of the plunger into two parts, one part is communicated with the lower cavity of the cylinder body, and the other part is communicated with the gas control pipeline, compared with the related art, the plunger 1 of the embodiment of the present application communicates the first chamber 121 and the second chamber 122 of the plunger 12, not only increases the space in the plunger 1 that can be filled with liquid, increases the length of the liquid column, but also does not need to seal the second chamber 122 again, connect the additional gas pipeline, thereby reducing the manufacturing difficulty and cost of the plunger 1. At the same time, the communication of the first chamber 121 and the second chamber 122 makes the elastic block 14 directly immersed in the liquid, or partially immersed in the liquid, when the plunger 1 is subjected to an impact load, the liquid pressure in the lower cavity 113 of the cylinder body rises, the liquid pressure in the second cavity of the plunger 12 rises synchronously, the liquid with rising pressure can directly act on a part of the elastic block 14, and a part of the pressure is released through the deformation of the elastic block 14, so that the pressure relief is realized. The pressure relief process of the liquid is directly transferred to the elastic block 14, which has rapidness and timeliness, and the elastic block 14 can quickly and effectively absorb a part of the impact load acting on the plunger 1, thereby timely reducing the peak value of the liquid pressure in the lower cavity 113 of the cylinder body.

[0040] The plunger 1 of the embodiment of the present application quickly absorbs a part of the impact energy through the elastic block 14, timely responds to the impact load caused by the impact ground pressure, can avoid the sudden impact load to cause the cylinder 11 to expand and damage, leading to the failure of the support of the roadway, the deformation of the roadway, ensure the anti-impact effect, ensure the effective support of the roadway, and have a long service life.

[0041] In order to make the scheme of the present application easier to understand, the first direction is taken as the up-down direction and the second direction is taken as the left-right direction, wherein the up-down direction is as shown in Figure 1 , and the left-right direction is as shown in Figures 2 to 4 .

[0042] The plunger 1 of the embodiment of the present application includes a cylinder body 11, a plunger 12, a baffle 13, an elastic block 14 and a retaining ring 15.

[0043] The cylinder body 11 has a first cavity, the cylinder body 11 extends along a first direction, the first cavity has a first end portion 111 and a second end portion 112 opposite in the first direction, and the first end portion 111 is open.

[0044] The plunger 12 is slidably arranged in the first cavity along the first direction, the plunger 12 separates the first cavity into a lower cavity 113 of the cylinder body and an upper cavity of the cylinder body, the lower cavity 113 of the cylinder body is adjacent to the second end portion 112 opposite the upper cavity of the cylinder body in the first direction, and the plunger 12 is provided with a second cavity.

[0045] As shown in Figure 1As shown, the cylinder 11 is a two-stretch cylinder, and the column 1 is a two-stretch column. The lower cavity 113 of the cylinder is communicated with a safety valve.

[0046] In some other embodiments, the cylinder 11 can also be a three-stretch cylinder, and the column 1 is a three-stretch column. The cylinder 11 can also be a single-stretch cylinder, and the column 1 is a single-stretch column.

[0047] The baffle 13 is arranged in the second cavity, and the baffle 13 divides the second cavity into a first chamber 121 and a second chamber 122. The baffle 13 is provided with a through hole 131, the through hole 131 communicates the first chamber 121 and the second chamber 122, the second chamber 122 is communicated with the lower cavity 113 of the cylinder, and the liquid can flow in the lower cavity 113 of the cylinder, the second chamber 122 and the first chamber 121. Therefore, the liquid in the lower cavity 113 of the cylinder is in equilibrium with the liquid in the second chamber 122 and the liquid in the first chamber 121.

[0048] The elastic block 14 is arranged in the first chamber 121. When the pressure of the liquid in which the elastic block 14 is immersed increases, the pressure on the elastic block 14 also increases, and the elastic block 14 deforms under pressure to absorb part of the liquid pressure (that is, part of the impact energy), and the liquid pressure releases part of the liquid pressure on the elastic block 14.

[0049] In some embodiments, the elastic block 14 is a sphere, and the number of elastic blocks 14 is multiple. The surface of the spherical elastic block 14 is the same distance from the center, which can realize uniform force on the surface of the elastic block 14 immersed in the liquid, uniform deformation, avoid local deformation and difficult to restore, improve the repeated deformation ability and times of the elastic block 14, and further prolong the service life of the column 1.

[0050] It should be noted that the diameter of the through hole 131 on the baffle 13 is smaller than the diameter of the elastic block 14, so as to avoid the movement of the elastic block 14 into the second chamber 122.

[0051] In some embodiments, the elastic block 14 includes a rubber ball and silicone oil. The rubber ball is provided with a closed third chamber at the center of the rubber ball, and the third chamber is filled with silicone oil. The rubber ball has high compression performance and can realize energy absorption of the elastic block 14. The silicone oil is compressible and is compressed when the rubber ball is deformed and shrinks, avoiding the rupture of the rubber ball under the action of the liquid pressure, improving the limit pressure that the elastic block 14 can withstand, and further improving the energy absorption capacity of the elastic block 14.

[0052] The inner wall surface of the second cavity of the piston 12 is provided with a mounting groove. Specifically, the mounting groove is an annular groove. The retainer ring 15 is fitted in the mounting groove, one side of the baffle 13 in the first direction abuts against the retainer ring 15, the other side of the baffle 13 in the first direction abuts against the elastic block 14, and the retainer ring 15 includes at least three annular blocks.

[0053] Specifically, the retaining ring 15 includes three annular blocks, which are combined to form a complete ring. When assembling the piston 12, elastic block 14, baffle 13 and retaining ring 15, the elastic block 14 is first placed into the second cavity of the piston 12, and then the baffle 13 is installed so that the other side of the baffle 13 abuts against the elastic block 14. Then, the three annular blocks are sequentially installed into the mounting groove to form the retaining ring 15. The two sides of the baffle 13 are blocked by the retaining ring 15 and the elastic block 14 to form a limit, thereby fixing the baffle 13.

[0054] The retaining ring 15 improves the ease of assembly of the baffle 13 and the piston 12.

[0055] The support system of the present invention is described below according to an embodiment of the present invention.

[0056] like Figures 1 to 4 As shown, the support system 100 of this embodiment includes the column 1 of any of the above embodiments.

[0057] Therefore, the support system 100 of this embodiment can quickly absorb a portion of the impact energy and respond promptly to the impact load brought by the rockburst. It can prevent the cylinder 11 from expanding and being damaged by the sudden impact load, which would lead to failure of the roadway support, roadway shrinkage and deformation, ensure the anti-rockfall effect, ensure effective support of the roadway, and have a long service life.

[0058] In some embodiments, the support system 100 further includes a top beam 2, a collapse energy-absorbing component 3, and a second collapse energy-absorbing component 4.

[0059] Top beam 2 on one side in the first direction (e.g.) Figure 2 The lower side of the middle section is connected to column 1. Figure 2 In the middle, one side of the top beam 2 is connected to the other end (upper end) of the column 1.

[0060] In some embodiments, the support system 100 includes a plurality of columns 1, and a top beam 2 connects the plurality of columns 1.

[0061] The collapsible energy-absorbing assembly 3 includes a first plate 31 and a collapsible energy-absorbing element 32. One end of the collapsible energy-absorbing element 32 is connected to the first plate 31 in a first direction, and the other end of the collapsible energy-absorbing element 32 is connected to the top beam 2 in the first direction. Multiple portions of the collapsible energy-absorbing element 32 are spaced apart from each of the first plate 31 and the top beam 2 in a second direction perpendicular to the first direction. In other words, see [reference needed]. Figure 3As shown, the part of the collapsing energy-absorbing piece 32 forms a first cavity 321 with the first plate 31, and the part of the collapsing energy-absorbing piece 32 forms a second cavity 322 with the roof beam 2. If the number of the part is multiple, the number of each of the first cavities 321 and the second cavities 322 is multiple, and the first cavities 321 and the second cavities 322 are spaced apart in the second direction.

[0062] The multiple first cavities 321 and the multiple second cavities 322 provided in the collapsing energy-absorbing assembly 3 make the collapsing energy-absorbing assembly 3 have a certain strength and a space for plastic deformation, and the collapsing energy-absorbing assembly 3 can be plastically deformed to absorb energy when stressed.

[0063] The collapsing energy-absorbing assembly 3 is located above the roof beam 2. In the working state of the support system 100, the collapsing energy-absorbing assembly 3 abuts against the roof of the roadway. When the roof of the roadway has a strong dynamic load characteristic, the roof of the roadway transmits the impact load to the collapsing energy-absorbing assembly 3, and the collapsing energy-absorbing assembly 3 plastically deforms to absorb part of the impact energy. At the same time, the plastic deformation of the collapsing energy-absorbing assembly 3 is affected by the deformation caused by the impact pressure of the roof of the roadway. The collapsing energy-absorbing assembly 3 deforms coordinately with the roof of the roadway. The collapsing energy-absorbing assembly 3 can still maintain a certain supporting strength for the roof of the roadway during the compression deformation process, not only absorbs part of the impact energy, but also hinders the transmission of the impact load to a certain extent, realizes limited energy absorption, further improves the ability of the support system 100 to cope with the impact load, and further ensures the effective support for the roadway 200.

[0064] In some embodiments, the collapsing energy-absorbing assembly 3 further comprises a bottom plate 33 and a side plate 34. One side (lower side) of the bottom plate 33 is connected with the roof beam 2, and the other side (upper side) of the bottom plate 33 is connected with the other end of the collapsing energy-absorbing piece 32. The part of the collapsing energy-absorbing piece 32 forms the second cavity 322 with the bottom plate 33. The bottom plate 33 facilitates the connection between the collapsing energy-absorbing assembly 3 and the roof beam 2.

[0065] The edge of the collapsing energy-absorbing piece 32 is provided with the side plate 34. One end (upper end) of the side plate 34 in the first direction is connected with the first plate 31, and the other end (lower end) of the side plate 34 in the first direction is connected with the bottom plate 33. The side plate 34 provided at the edge of the collapsing energy-absorbing piece 32 can protect the collapsing energy-absorbing piece 32, avoid foreign matters from entering the first cavity 321 and / or the second cavity 322 to affect the plastic deformation of the collapsing energy-absorbing piece 32, and ensure the normal use of the collapsing energy-absorbing assembly 3.

[0066] The collapse energy-absorbing piece 32 is a corrugated steel plate. The corrugated steel plate has low cost, is easy to manufacture, has good plastic deformation capacity, can deform in the first direction and the second direction, can absorb impact loads in the first direction and the second direction, can adapt to impact loads in multiple directions, and has the characteristics of energy absorption and load bearing under harsh conditions.

[0067] The extension direction of the collapse energy-absorbing piece 32 is parallel or perpendicular to the extension direction of the roof beam 2. The upper end of the collapse energy-absorbing piece 32 abuts against the roof of the roadway, and the extension direction of the collapse energy-absorbing piece 32 is parallel or perpendicular to the extension direction of the roof beam 2, so that the load bearing stress distribution of the roof beam 2 is more uniform, which is beneficial to guarantee the supporting effect of the stand column 1.

[0068] The number of the collapse energy-absorbing assemblies 3 is multiple, and the multiple collapse energy-absorbing assemblies 3 are sequentially stacked in the first direction. The collapse energy-absorbing pieces 32 of the adjacent two collapse energy-absorbing assemblies 3 are arranged in axial symmetry with the first plate 31 of the roof beam 2 adjacent to the collapse energy-absorbing piece 32 in the first direction as the center (the first plate 31 of the lower collapse energy-absorbing assembly 3 of the adjacent two collapse energy-absorbing assemblies 3). The axial symmetry distribution between the adjacent two collapse energy-absorbing pieces 32 can improve the supporting strength of the collapse energy-absorbing assembly 3.

[0069] Specifically, the compression instability critical force of the collapse energy-absorbing assembly 3 is F k , and the working resistance of the stand column 1 (the supporting force of the stand column 1 when the pressure of the lower cavity 113 of the cylinder body of the stand column 1 reaches the set pressure of the safety valve) is Fc, wherein, 2Fc>F k >Fc.

[0070] Under weak dynamic load conditions, that is, when the roof of the roadway deforms slowly or the impact is small, the stand column 1 and the collapse energy-absorbing assembly 3 are both extruded, and the elastic block 14 placed in the movable column 12 is compressed and deformed after being subjected to the pressure of the liquid, thereby achieving the buffering and energy absorption of the stand column 1. Under strong dynamic load conditions, in addition to the elastic block 14 absorbing part of the impact energy, the collapse energy-absorbing assembly 3 can also absorb part of the impact energy through compression deformation.

[0071] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0072] Furthermore, the terms "first", "second", or the like are used merely to describe corresponding features, and do not imply or connote relative importance or a quantity of the specified features. Thus, a feature defined with "first" or "second" can include at least one of the feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0073] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0075] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A column, characterized in that, include: A cylinder (11) having a first cavity extending along a first direction, the first cavity having a first end (111) and a second end (112) opposite to each other in the first direction, the first end (111) being open; A piston (12) is slidably disposed in the first cavity along the first direction. The piston (12) divides the first cavity into a lower cylinder cavity (113) and an upper cylinder cavity. The lower cylinder cavity (113) is adjacent to the second end (112) relative to the upper cylinder cavity in the first direction. The piston (12) is provided with a second cavity. A baffle (13) is disposed in the second cavity, dividing the second cavity into a first chamber (121) and a second chamber (122). The baffle (13) has a through hole connecting the first chamber (121) and the second chamber (122). The second chamber (122) is connected to the lower cavity (113) of the cylinder block. An elastic block (14) is disposed in the first chamber (121). The elastic block (14) is a sphere. The elastic block (14) includes a rubber ball and silicone oil. The rubber ball has a closed third chamber located at the center of the rubber ball. The third chamber is filled with the silicone oil.

2. The column according to claim 1, characterized in that, The second cavity of the piston column (12) is provided with an installation groove on its inner wall surface; The column further includes a retaining ring (15) that fits into the mounting groove. The baffle (13) abuts against the retaining ring (15) on one side in the first direction and against the elastic block (14) on the other side in the first direction. The retaining ring (15) includes at least three annular blocks.

3. A support system, characterized in that, Includes the column as described in any one of claims 1 to 2.

4. The support system according to claim 3, characterized in that, Further includes: Top beam (2), the top beam (2) is connected to the column on one side in the first direction; and The energy-absorbing component (3) includes a first plate (31) and a energy-absorbing element (32). The energy-absorbing element (32) is connected to the first plate (31) on one side in a first direction and to the top beam (2) on the other side in the first direction. A plurality of portions of the energy-absorbing element (32) in a second direction are spaced apart from each of the first plate (31) and the top beam (2). The second direction is perpendicular to the first direction, and the plurality of portions are spaced apart in the second direction.

5. The support system according to claim 4, characterized in that, The collapsible energy-absorbing component (32) is a corrugated steel plate.

6. The support system according to claim 5, characterized in that, The extension direction of the collapsible energy-absorbing element (32) is parallel or perpendicular to the extension direction of the top beam (2).

7. The support system according to claim 5, characterized in that, The number of the collapse energy absorption components (3) is multiple, and the multiple collapse energy absorption components (3) are stacked sequentially in the first direction. The collapse energy absorption elements (32) of two adjacent collapse energy absorption components (3) are arranged symmetrically with the first plate (31) adjacent to the top beam (2) in the first direction as the center.

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