阅读说明：本技术 一种基于管式装配件的四向抗震支架 (Four-way anti-seismic support based on tubular assembly parts ) 是由 吴策皇 陈萍 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种基于管式装配件的四向抗震支架,包括有横向连接件,及与横向连接件形成固定配合的竖向连接件,及与横向连接件和竖向连接件形成固定配合的斜向连接件,所述竖向连接件包括有竖向螺杆,及套设于竖向螺杆上的、向横向连接件旋紧的螺栓组,所述斜向连接件包括有挂扣件,该挂扣件钩挂于竖向螺杆上、并经由螺栓组旋紧抵靠横向连接件上,所述横向连接件上开有配合竖向螺杆贯穿的条形开口和条形开孔,所述条形开口内卡入有限位件,所述限位件上安装有管式装配件；该基于管式装配件的四向抗震支架可调性强,可根据不同情况快速即使进行装卸调整,整体灵活性高,复杂性低。(The invention discloses a four-way anti-seismic support based on a tubular assembly part, which comprises a transverse connecting piece, a vertical connecting piece and an oblique connecting piece, wherein the vertical connecting piece is fixedly matched with the transverse connecting piece, the oblique connecting piece is fixedly matched with the transverse connecting piece and the vertical connecting piece; this quadriversal antidetonation support based on tubular assembly spare adjustability is strong, can load and unload the adjustment according to different situation even fast, and whole flexibility is high, and the complexity is low.)

1. The utility model provides a quadriversal antidetonation support based on tubular assembly spare, including transverse connection spare, and form fixed complex vertical connecting piece with transverse connection spare, and form fixed complex slant connecting piece, its characterized in that with transverse connection spare and vertical connecting piece: vertical connecting piece including vertical screw rod, and the cover locate on vertical screw rod, to the bolt group that horizontal connecting piece screwed, the slant connecting piece including the fastener, this fastener hook on vertical screw rod and support on horizontal connecting piece via bolt group screws, last strip opening and the bar trompil of opening that has the vertical screw rod of cooperation to run through of horizontal connecting piece, the card has the locating part in the strip opening, install the tubular assembly spare on the locating part, the tubular assembly spare is including first assembly foot and second assembly foot, and the spacing arm of bent shape that is even an organic whole with first assembly foot and second assembly foot.

2. A tubular fitting-based, four-way seismic support according to claim 1, wherein: vertical connecting piece forms fixed complex first embedding piece including forming with vertical screw rod, and forms to run through complex vertical antidetonation arm with vertical screw rod, and install in vertical antidetonation arm and form centre gripping complex holder with vertical screw rod, vertical antidetonation arm has the side opening, vertical screw rod is aligned with the side opening, the one end and the vertical screw rod of holder form to lean on, the other end forms to lean on with vertical antidetonation arm and lean on.

3. A tubular fitting-based, four-way seismic support according to claim 2, wherein: the clamping piece comprises an inner clamping body which is abutted to the vertical screw rod, an outer clamping body which is abutted to the anti-seismic arm, and a limit screw which penetrates through the outer clamping body and is abutted to the inner clamping body, wherein the penetrating position between the limit screw and the outer clamping body forms threaded fit, and the abutting position between the limit screw and the inner clamping body forms rotatable annular concave-convex fit.

4. A tubular fitting-based, four-way seismic support according to claim 3, wherein: the lateral opening department of vertical antidetonation arm is formed with vertical spacing barb, and this vertical spacing barb department is formed with vertical spacing tooth, and the flank of tooth direction of vertical spacing tooth sets up for inwards, it has the vertical spacing hook groove with vertical spacing barb matched with to open on the outer clamp, has the vertical gullet tooth that meshes with vertical spacing tooth in this vertical spacing hook groove.

5. A tubular fitting-based, four-way seismic support according to claim 1, wherein: the slant connecting piece is including the second embedding piece, and set up in second embedding piece below to form fixed complex setting element with the second embedding piece, and form perpendicular complex bending arm with the setting element, and form articulated upper junction spare with the bending arm, and the slant antidetonation arm that meets with upper junction spare, and the lower connecting piece that meets with slant antidetonation arm, this lower connecting piece forms articulated cooperation with hanging the fastener.

6. A tubular fitting-based, four-way seismic support according to claim 5, wherein: the oblique anti-seismic arm is arranged in a hollow mode, a limiting guide rail is formed in the hollow position, the upper connecting piece and the lower connecting piece are partially embedded into the oblique anti-seismic arm, the upper connecting piece and the lower connecting piece partially cover the oblique anti-seismic arm and abut against the oblique anti-seismic arm, the limiting guide rail is a tooth-shaped guide rail, and the tooth surface direction of the tooth-shaped guide rail is opposite to the arrangement direction of the upper connecting piece and the lower connecting piece.

7. A tubular fitting-based, four-way seismic support according to claim 1, wherein: transverse connection spare is formed with horizontal spacing barb at the bar opening part, horizontal spacing barb department is formed with horizontal spacing tooth, the locating part is gone into in the spacing piece of bar opening including the card, and holds the spacing seat in transverse connection spare, it has the counter bore to open on the spacing piece, it has the screw of interfacing mutually with the counter bore to open on the spacing seat, open the both sides of spacing seat have with horizontal spacing barb horizontal spacing hook groove of cooperateing, horizontal spacing hook inslot is equipped with the horizontal gullet tooth with horizontal spacing tooth engaged with.

8. A tubular fitting-based, four-way seismic support according to claim 7, wherein: spacing seat is including the barrel portion, and sets up in the side portion of barrel portion week side, each the barrel portion corresponds collocation has two side portions that are relative setting, the barrel portion supports with the bottom formation of spacing piece and leans on, spacing piece covers the barrel portion, just the side portion protrusion is outside the covering surface of spacing piece, horizontal spacing hook groove sets up in the top of side portion, each side portion is taken over and is furnished with a horizontal spacing hook groove.

9. A tubular fitting-based, four-way seismic support according to claim 1, wherein: the pipe type assembly part is provided with a connecting hole matched with the counter bore, a limiting bolt penetrates into the connecting hole, sequentially penetrates through the connecting hole, the counter bore and the screw hole, and forms threaded fit with the screw hole.

10. A tubular fitting-based, four-way seismic support according to claim 9, wherein: the transverse connecting pieces, the vertical connecting pieces and the oblique connecting pieces are all more than one, each transverse connecting piece is connected with at least two vertical connecting pieces, each vertical connecting piece is connected with at least one transverse connecting piece, and each oblique connecting piece is connected with at least one vertical connecting piece.

Technical Field

The invention relates to a four-way anti-seismic support based on a tubular assembly part.

Background

Earthquake is also called earthquake and earth vibration, and is a natural phenomenon that the earth crust can generate earthquake waves during the vibration caused in the process of quickly releasing energy; the mutual extrusion collision between the plate and the plate on the ball causes the dislocation and the rupture of the plate edge and the plate inside, which is the main reason for causing the ground vibration.

The propagation modes of the seismic waves comprise longitudinal waves, transverse waves and surface waves, wherein the longitudinal waves are also called P waves to cause up-and-down bumping vibration of the ground, and the destructiveness is weak; the transverse wave is also called as S wave, which causes horizontal shaking of the ground and has strong destructiveness; surface waves, also known as L-waves, propagate along the ground surface and are the main cause of strong destruction of buildings.

The earthquake causes the vibration of the ground surface and is transmitted to the building body and the non-structural component, and based on the vibration, the mechanism of the anti-seismic support proposed by the prior art is used for dealing with the vibration.

In recent years, natural disasters such as typhoons, tsunamis and earthquakes frequently occur around the world, and very serious injuries are caused to the society and people. As is well known, when an earthquake occurs, the casualty rate caused by leakage or falling of pipelines accounts for more than half of the total casualties, and in order to reduce the loss, it is indispensable and mandatory to design the pipelines in buildings for earthquake-resistant installation.

The anti-seismic support limits the displacement of the attached electromechanical engineering facilities, controls the vibration of the facilities and transmits the load to various components or devices on the bearing structure. The anti-seismic support gives reliable protection to building electromechanical engineering facilities in the earthquake and bears the earthquake action from any horizontal direction; the anti-seismic support is checked according to the load borne by the anti-seismic support; all components forming the anti-seismic support are finished components, and the components connected with the fasteners are convenient to install; the limit of the anti-seismic support of the heat-insulating pipeline is designed according to the size of the pipeline after heat insulation, and the displacement generated by expansion with heat and contraction with cold of the pipeline is not limited.

When meeting the earthquake of earthquake fortification intensity in local area, the building water supply and drainage, fire control, heating, ventilation, air conditioning, gas, heating power, electric power, communication and other electromechanical engineering facilities after earthquake fortification can achieve the aims of lightening earthquake damage, reducing and preventing secondary disasters as much as possible, thereby achieving the purpose of reducing casualties and property loss.

When an existing four-way anti-seismic support supports an air pipe and a bridge frame, due to the fact that node positions among connecting pieces are different and adjustability is poor, when the whole anti-seismic support supports the air pipe and the bridge frame, technical requirements for assembly are high, assembly needs to be carried out strictly according to procedures, otherwise, the problem that assembly cannot be carried out easily occurs, and the whole flexibility is poor and complexity is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a four-way anti-seismic support based on a tubular assembly part, which has strong adjustability, high overall flexibility and low complexity, can be quickly assembled and disassembled according to different conditions.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a four-way anti-seismic support based on a tubular assembly part comprises a transverse connecting piece, a vertical connecting piece which is fixedly matched with the transverse connecting piece, and an oblique connecting piece which is fixedly matched with the transverse connecting piece and the vertical connecting piece, the vertical connecting piece comprises a vertical screw rod and a bolt group which is sleeved on the vertical screw rod and screwed to the transverse connecting piece, the oblique connecting piece comprises a hanging fastener, the hanging fastener is hooked on the vertical screw rod and tightly pressed against the transverse connecting piece through the bolt group, the transverse connecting piece is provided with a strip-shaped opening and a strip-shaped opening which are matched with the vertical screw rod to penetrate through, the limiting part is clamped in the strip-shaped opening, a pipe assembly part is mounted on the limiting part, and the pipe assembly part comprises a first assembly foot, a second assembly foot and a curved limiting arm which is connected with the first assembly foot and the second assembly foot into a whole.

Preferably, the vertical connecting piece comprises a first embedded part fixedly matched with the vertical screw, a vertical anti-seismic arm formed by penetrating and matching with the vertical screw and a clamping piece installed in the vertical anti-seismic arm and formed by clamping and matching with the vertical screw, the vertical anti-seismic arm is provided with a side opening, the vertical screw is aligned with the side opening, one end of the clamping piece is abutted to the vertical screw, and the other end of the clamping piece is abutted to the vertical anti-seismic arm.

Furthermore, the clamping piece comprises an inner clamping body which is abutted to the vertical screw rod, an outer clamping body which is abutted to the anti-seismic arm, and a limit screw which penetrates through the outer clamping body and is abutted to the inner clamping body, wherein the penetrating position between the limit screw and the outer clamping body forms threaded fit, and the abutting position between the limit screw and the inner clamping body forms rotatable annular concave-convex fit.

Furthermore, the side opening of the vertical anti-seismic arm is provided with a vertical limiting barb, the vertical limiting barb is provided with vertical limiting teeth, the tooth surface direction of the vertical limiting teeth is inwards arranged, the outer clamp body is provided with a vertical limiting hook groove matched with the vertical limiting barb, and vertical hook teeth meshed with the vertical limiting teeth are arranged in the vertical limiting hook groove.

Preferably, the oblique connecting piece comprises a second embedded piece, a positioning piece which is arranged below the second embedded piece and forms fixed fit with the second embedded piece, a bending arm which forms vertical fit with the positioning piece, an upper connecting piece which forms hinge joint with the bending arm, an oblique anti-seismic arm which is connected with the upper connecting piece, and a lower connecting piece which is connected with the oblique anti-seismic arm, wherein the lower connecting piece forms hinge fit with the hanging fastener.

Furthermore, the oblique anti-seismic arm is arranged in a hollow mode, a limiting guide rail is formed in the hollow position, the upper connecting piece and the lower connecting piece are partially embedded into the oblique anti-seismic arm, the part of the upper connecting piece and the part of the lower connecting piece are covered outside the oblique anti-seismic arm and abut against the oblique anti-seismic arm, the limiting guide rail is a tooth-shaped guide rail, and the tooth surface direction of the tooth-shaped guide rail is opposite to the arrangement direction of the upper connecting piece and the lower connecting piece.

As preferred, transverse connection spare is formed with horizontal spacing barb at the bar opening part, horizontal spacing barb department is formed with horizontal spacing tooth, the locating part is gone into in bar opening's spacing piece including the card, and holds the spacing seat in transverse connection spare, it has the counter bore to open on the spacing piece, it has the screw that docks mutually with the counter bore to open on the spacing seat, open the both sides of spacing seat has and cooperatees horizontal spacing hook groove with horizontal spacing barb, be equipped with the horizontal gullet tooth with horizontal spacing tooth engaged with in the horizontal spacing hook groove.

Further, spacing seat is including the barrel portion, and sets up in the side portion of barrel portion week side, each the barrel portion corresponds collocation has two side portions that are relative setting, the barrel portion supports with the bottom formation of spacing piece and leans on, spacing piece covers the barrel portion, just side portion protrusion is outside the covering surface of spacing piece, horizontal spacing hook groove sets up in the top of side portion, each side portion is lapped and is equipped with a horizontal spacing hook groove.

Preferably, the tubular assembly part is provided with a connecting hole matched with the counter bore, a limiting bolt penetrates into the connecting hole, and the limiting bolt sequentially penetrates through the connecting hole, the counter bore and the screw hole and forms threaded fit with the screw hole.

Furthermore, the transverse connecting pieces, the vertical connecting pieces and the oblique connecting pieces are all more than one, each transverse connecting piece is connected with at least two vertical connecting pieces, each vertical connecting piece is connected with at least one transverse connecting piece, and each oblique connecting piece is connected with at least one vertical connecting piece.

The invention has the beneficial effects that:

through adopting transverse connection spare, vertical connecting piece and slant connecting piece to constitute a quadriversal antidetonation support to carried on the transverse connection spare, carried on the tubular assembly spare through the tubular assembly spare and carried out the support bearing of water pipe, this quadriversal antidetonation support is because the equipment node is concentrated, and the package assembly is succinct, when assembling, holistic loading and unloading process is very fast, and can select the layering to support or support with the layer according to the length of water pipe, and can adjust at any time and change, the flexibility is strong.

Drawings

FIG. 1 is an enlarged schematic view of the transverse connector end of a four-way seismic support based on tubular fittings according to the present invention;

FIG. 2 is a schematic view of a limiting member of a four-way anti-seismic bracket based on a tubular assembly according to the present invention;

FIG. 3 is an enlarged view of the top structure of the vertical connectors of a four-way seismic support based on tubular fittings according to the present invention;

FIG. 4 is an enlarged view of the bottom structure of the vertical connecting piece of the four-way aseismatic bracket based on the tubular assembly according to the present invention;

FIG. 5 is a schematic view of a clamp structure of a four-way aseismic support based on a tubular assembly according to the present invention;

FIG. 6 is a schematic diagram of a diagonal connection member of a four-way anti-seismic support based on a tubular assembly according to the present invention;

FIG. 7 is an enlarged view of the internal structure of the diagonal connector of the four-way anti-seismic bracket based on the tubular assembly according to the present invention;

FIG. 8 is an enlarged view of the connection positions of the transverse connecting members, the vertical connecting members and the diagonal connecting members of the four-way anti-seismic bracket based on the tubular assembly according to the present invention;

FIG. 9 is an enlarged view of the fitting construction of a four-way seismic support based on a tubular fitting of the present invention;

fig. 10 is a schematic view of an assembly structure of a four-way anti-seismic bracket based on a tubular assembly according to the invention when the bracket is used for a water pipe.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

Examples

Referring to fig. 1-9, a four-way anti-seismic support based on a tubular assembly part comprises a transverse connecting piece 1, a vertical connecting piece 2 fixedly matched with the transverse connecting piece 1, and an oblique connecting piece 3 fixedly matched with the transverse connecting piece 1 and the vertical connecting piece 2, wherein the vertical connecting piece 2 comprises a vertical screw 21, and a bolt group 22 which is sleeved on the vertical screw 21 and screwed to the transverse connecting piece 1, the oblique connecting piece 3 comprises a fastener 31, the fastener 31 is hooked on the vertical screw 21 and screwed to abut against the transverse connecting piece 1 through the bolt group 22, a strip-shaped opening 11 and a strip-shaped opening 12 which are penetrated by the vertical screw 21 are formed in the transverse connecting piece 1, a limiting piece 4 is clamped in the strip-shaped opening 11, an assembly part tubular 5 is mounted on the limiting piece 4, the tubular assembly part 5 comprises a first assembly foot 51 and a second assembly foot 52, and a curved stopper arm 53 integrally connected to the first mounting leg 51 and the second mounting leg 52.

Referring to fig. 3-5, the vertical connecting member 2 includes a first inserting part 23 fixedly engaged with the vertical screw 21, a vertical anti-vibration arm 24 engaged with the vertical screw 21 in a penetrating manner, and a clamping member 25 mounted in the vertical anti-vibration arm 24 and engaged with the vertical screw 21 in a clamping manner, the vertical anti-vibration arm 24 has a side opening 241, the vertical screw 21 is aligned with the side opening 241, one end of the clamping member 25 abuts against the vertical screw 21 and the other end abuts against the vertical anti-vibration arm 24, the clamping member 25 includes an inner clamp 251 engaged with the vertical screw 21, an outer clamp 252 engaged against the vertical anti-vibration arm 24, and a limit screw 253 engaged with the outer clamp 252 in a penetrating manner, the limit screw 253 is engaged with the outer clamp 252 in a threaded manner, the limit screw 253 is engaged with the rotatable inner clamp 251 in an annular concave-convex manner, the lateral opening 241 of the vertical anti-seismic arm 24 is provided with a vertical limiting barb 241, the vertical limiting barb 241 is provided with a vertical limiting tooth 242, the tooth surface direction of the vertical limiting tooth 242 is arranged inwards, the outer clamp body 252 is provided with a vertical limiting hook groove 2521 matched with the vertical limiting barb 241, and the vertical limiting hook groove 2522 meshed with the vertical limiting tooth 242 is arranged in the vertical limiting hook groove 2521.

Referring to fig. 3-5, through the design that has adopted vertical screw rod 21 and vertical antidetonation arm 24, the vertical screw rod 21 that penetrates in vertical antidetonation arm 24 leans on via holder 25 in the vertical antidetonation arm 24, thereby make whole vertical antidetonation arm 24 and vertical screw rod 21 form the centre gripping cooperation, and the bottom of vertical screw rod 21, then form fixed cooperation with transverse connection piece 1, thereby form bearing structure, the connected node between vertical screw rod 21 and the transverse connection piece 1 is then regarded as the switching node, be used for being connected with fastener 31 of slant connecting piece 3 and cooperate the antidetonation, and the vertical screw rod 21 department of self, then cushion the shock attenuation through the centre gripping cooperation structure with between the vertical antidetonation arm 24, when too big vibrations appear, vertical antidetonation arm 24 then is regarded as the bolster, avoid appearing too big vibrations.

Referring to fig. 6 to 7, the diagonal connector 3 includes a second insertion part 32, and is disposed under the second insertion part 32, a positioning member 33 fixedly engaged with the second insertion member 32, a bending arm 34 vertically engaged with the positioning member 33, an upper connecting member 35 hinged with the bending arm 34, an oblique anti-vibration arm 36 connected with the upper connecting member 35, and a lower connecting member 37 connected with the oblique anti-vibration arm 36, the lower connecting piece 37 is hinged with the fastener 31, the oblique anti-seismic arm 36 is arranged in a hollow way, and a limit guide rail 361 is formed at the hollow position, the upper connecting piece 35 and the lower connecting piece 37 are partially embedded in the oblique anti-seismic arm 36, partially cover the oblique anti-seismic arm 36, and is abutted against the outer surface of the oblique anti-vibration arm 36, the limit guide rail 361 is a tooth-shaped guide rail, the tooth surface direction of the toothed rail is opposite to the arrangement direction of the upper link 35 and the lower link 37.

Referring to fig. 6-7, through the combined design of the positioning member 33, the hanging fastener 31 and the oblique anti-seismic arm 36, an oblique connecting member is formed, and the connection with the oblique anti-seismic member is realized based on the bending arm 34 structures on the positioning member 33 and the hanging fastener 31, so as to realize the oblique installation of the oblique anti-seismic member, thereby enabling the positioning member 33 and the hanging fastener 31 to be in different vertical directions, in addition, the design of the hanging fastener 31 can be quickly and conveniently combined by a plurality of oblique connecting members 3, only by hooking at the node, the angle direction can be quickly adjusted, the flexibility is high, and the connection and assembly are convenient.

Referring to fig. 1-2, the transverse connecting member 1 is formed with a transverse limiting barb 13 at the strip-shaped opening 11, the transverse limiting barb 13 is formed with a transverse limiting tooth 14, the limiting member 4 includes a limiting piece 41 clamped in the strip-shaped opening 11 and a limiting seat 42 accommodated in the transverse connecting member 1, the limiting piece 41 is provided with a counter bore 411, the limiting seat 42 is provided with a screw hole 421 connected with the counter bore 411, two sides of the limiting seat 42 are provided with transverse limiting hook grooves 421 matched with the transverse limiting barb 13, the transverse limiting hook grooves 421 are provided with transverse hook teeth 422 engaged with the transverse limiting tooth 14, the limiting seat 42 includes a column portion 423 and side portions 424 arranged on the peripheral side of the column portion 423, each column portion 423 is correspondingly matched with two side portions 424 arranged oppositely, the column portion 423 is abutted against the bottom of the limiting piece 41, the column part 423 is covered by the limiting sheet 41, the side edge part 424 protrudes out of the covering surface of the limiting sheet 41, the transverse limiting hook groove 421 is arranged above the side edge part 424, and each side edge part 424 is matched with a transverse limiting hook groove 421.

Referring to fig. 1-2, by adopting the design of the strip-shaped opening 11, the horizontal limiting barb 13 formed at the strip-shaped opening 11 is used for fixing the limiting seat 42, the horizontal limiting barb 13 is matched and butted with the horizontal limiting hook groove 421 to form a primary fixing structure, then the limiting teeth formed at the horizontal limiting barb 13 are meshed with the horizontal hook teeth 422 formed in the horizontal limiting hook groove 421 to form a secondary fixing structure, meanwhile, the limiting sheet 41 arranged in the strip-shaped opening 11 is matched to form an assembling structure, and the limiting structure formed by the counter bore 411 and the screw hole 421 is matched to form a limiting structure, so that the water pipe is supported.

Referring to fig. 9, the tubular assembly member 5 is provided with a connecting hole matched with the counter bore 411, a limit bolt 54 penetrates into the connecting hole, the limit bolt 54 sequentially penetrates through the connecting hole, the counter bore 411 and the screw hole 421 and forms a threaded fit with the screw hole 421, more than one transverse connecting member 1, at least two vertical connecting members 2 are arranged on each transverse connecting member 1, at least one transverse connecting member 1 is arranged on each vertical connecting member 2, and at least one vertical connecting member 2 is arranged on each inclined connecting member 3.

Referring to fig. 10, when the water pipe is selected to be assembled, a single transverse connector 1 is adopted and matched with three oblique connectors 3 and two vertical connectors 2, wherein the vertical connectors 2 penetrate through the end parts of the transverse connectors 1, one oblique connector 3 is hooked on one vertical connector 2, the other two oblique connectors 3 are hooked on the other vertical connector 2, a 90-degree included angle is formed between the other two oblique connectors 3, and meanwhile, a plurality of pipe type assembly parts 5 are assembled on the transverse connectors 1, and the water pipe penetrates through the pipe type assembly parts 5 to form limiting and fixing.

The invention has the beneficial effects that:

through adopting transverse connection spare, vertical connecting piece and slant connecting piece to constitute a quadriversal antidetonation support to carried on the transverse connection spare, carried on the tubular assembly spare through the tubular assembly spare and carried out the support bearing of water pipe, this quadriversal antidetonation support is because the equipment node is concentrated, and the package assembly is succinct, when assembling, holistic loading and unloading process is very fast, and can select the layering to support or support with the layer according to the length of water pipe, and can adjust at any time and change, the flexibility is strong.

The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.