CN206329422U - Segment pipe in the middle of a kind of solder type piping fixing structure and its gas handling system - Google Patents

Abstract

The utility model discloses a kind of solder type piping fixing structure, for realizing being fixedly connected for segment pipe and vehicle body in the middle of motorcar engine admission line system, it is characterized in that, the piping fixing structure includes two along pipeline spaced journal stirrup axially back and forth, journal stirrup the inner is weldingly fixed on pipeline outer wall side medium position, outer end is horizontally outer to be extended, and is extended upwards after two lateral bends before and after journal stirrup, journal stirrup bottom is provided with bolt hole；Piping fixing structure also includes the supporting support of a curved sheet of entirety.The invention also discloses segment pipe in the middle of a kind of gas handling system for employing above-mentioned solder type piping fixing structure.The utility model has simple in construction, saving material, convenient to install, fixed reliable, the advantages of can reducing the installation connection request to engine air throttle, raising assembling effect.

Description

Segment pipe in the middle of a kind of solder type piping fixing structure and its gas handling system

Technical field

The utility model is related to motorcar engine gas handling system field, in particular to a kind of solder type piping fixing structure And its segment pipe in the middle of gas handling system.

Background technology

The parts aggregate that air or gaseous mixture are imported cylinder in car calls engine aspirating system.Hair In motivation gas handling system, air filter is to realize the main member of air inlet part, for realizing to entering engine air Filtering.Air filter is generally positioned at engine top position, and the gas outlet of air filter is connected to engine section by admission line Valve.

Segment pipe in the middle of existing solder type piping fixing structure and its gas handling system, it is general using integral type hose or The structure type of two sections of dock flexible pipes of person.A kind of such as disclosed in CN201520081736.6 automobile engine intake tube, bag Air inlet pipe one and air inlet pipe two are included, is connected between air inlet pipe one and air inlet pipe two by swan-neck, air inlet pipe one, the and of air inlet pipe two Swan-neck is formed in one, and fan is provided with air inlet pipe one, if fan include being arranged at support on the inwall of air inlet pipe one and The lattice framing for fixed rotor, air inlet are fixed with dry blade, rotor of the middle part provided with drive blade rotation of support, support The electronic controller of control rotation speed of the fan is provided with the outer wall of pipe one.For another example one disclosed in CN201120426933.9 Plant automobile engine intake tube, including first paragraph air inlet pipe, second segment air inlet pipe, sensor erection support and buffer ferrule； The upper end of the first paragraph air inlet pipe is connected with the lower end of the second segment air inlet pipe by the sensor erection support；It is described Buffer ferrule is located at the lower end of the first paragraph air inlet pipe；The sensor erection support and the first paragraph air inlet pipe and described Be formed in one structure between second segment air inlet pipe.

The automobile engine intake tube of the existing patent of above-mentioned two, just belongs to the structure type of two sections of dock flexible pipes. This existing engine charge pipeline system, although relatively simple in structure, but still there is following defect：If the 1, pipeline Material is really up to the mark, is unfavorable for installing and turns to, if while pipeline material is excessively soft and can increase pipeline and rock and influence pipe-line system Normal work, producing collision causes breakage.2nd, pipe-line system two ends and engine air throttle and air filter outlet connection still So inconvenience.3rd, because pipe-line system turning is larger, cause easily to produce noise during air inlet, particularly when air inflow is larger, make an uproar Sound is larger.Especially in a model LFX70 car, sent out because air input of engine by air is larger, and in the vehicle Motivation air throttle exports setting direction close to consistent with air filter, only exists smaller angle, causes drawbacks described above particularly evident, needs New admission line system is designed to overcome one's shortcomings.

In order to solve described problem, applicant considers to devise a kind of motorcar engine admission line system, by air inlet pipe Road be divided into one end be used for and air filter export the air filter connection segment pipe connected, and one end is used for and engine air throttle The engine connection segment pipe connected, and air filter connection segment pipe and engine linkage section pipe are fixedly attached to by clip Middle segment pipe between road, interlude pipeline material is used the material of larger hardness, it is fixedly mounted on car On vehicle body.Easily rocked with solving pipe-line system, cause noise big and easily damaged, the defect such as not easy to install.

But wherein, how interlude pipeline configuration and its fixed structure specifically design, just with simple in construction, material is saved Expect, it is convenient to install, it is fixed reliable, the installation connection request to engine air throttle can be reduced, it is ensured that the characteristics of assembling effect, The problem of as there is considered solution.

Utility model content

For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is：How a kind of knot is provided Structure is simple, saves material, convenient to install, fixed reliable, can reduce the installation connection request to engine air throttle, it is ensured that dress Segment pipe in the middle of solder type piping fixing structure and its gas handling system with effect.

In order to solve the above-mentioned technical problem, the utility model employs following technical scheme：

A kind of solder type piping fixing structure, for realizing segment pipe and vehicle body in the middle of motorcar engine admission line system Be fixedly connected, it is characterised in that the piping fixing structure includes two along pipeline spaced journal stirrup axially back and forth, branch Ear the inner is weldingly fixed on pipeline outer wall side medium position, and outer end is horizontally outer to be extended, and two lateral bends are backward before and after journal stirrup Upper to be extended, journal stirrup bottom is provided with bolt hole；Piping fixing structure also includes the support branch of a curved sheet of entirety Frame, the one end of supporting support arcuately is horizontal-extending and is correspondingly arranged on two bolts hole, and corresponding with journal stirrup bottom by bolt Bolt hole be fixedly connected, the supporting support other end to outer lower side bend extend and be provided with two bolts hole simultaneously along time interval For by being bolted to coachbuilt body.

So, although two journal stirrups are installed needs and are welded and fixed, but overall structure is simpler, save material, and equally With easy for installation, the characteristics of fixing reliable.The structure of the supporting support of use, it is convenient to realize and the transition connection of vehicle body and tool There is damping, buffering effect, it is ensured that the reliability and permanence of connection.

Further, the journal stirrup and supporting support are made using stainless steel material, ensure that support strength.

Further, the supporting support periphery has aduncate flange, to improve self-strength.

Further, reinforcement groove is provided with supporting support along in inward-outward direction, to improve self-strength.

Further, fovea superior is set in the middle part of the outside lower extension portion lower side of supporting support, to save material and be beneficial to It is spacing when mounted.

Elastic shock attenuation set is further provided with the bolt hole of journal stirrup, and the bolt of journal stirrup connection passes through elastic shock attenuation set After connect, to improve damping effect.

The invention also discloses segment pipe in the middle of a kind of gas handling system, middle segment pipe one end is used for and air filter connects Connecing the segment pipe connection other end is used for and engine connection segment pipe connection, it is characterised in that the middle segment pipe includes position The flat segments of one end are connected in connecting segment pipe with air filter and positioned at the bending section that one end is connected with engine connection segment pipe, Bending section outer surface evagination is formed with latticed reinforcement；The welding of structure as described above is provided with middle segment pipe Type piping fixing structure.

So, middle segment pipe and engine connection segment pipe connects one end and is set to bend segment structure, is due to start The pipe joint of machine air throttle is smaller and angular deviation is larger, makes its installation more inconvenient, therefore set one on middle segment pipe Section bending segment structure and engine connection segment pipe connection, the Partial angle that engine connects segment pipe is undertaken by middle segment pipe Turning demand, can so significantly reduce the setting requirements and installation requirement that segment pipe is connected to engine, convenient to complete The overall of admission line system assembles and ensures to assemble effect.The reinforcement set on bending section, can improve this junction Structural strength, it is ensured that assembling is reliable.

Further, it is additionally provided with the bending section of the middle segment pipe for being connected with engine crank case ventilation pipe Oil gas backflow communicating pipe.So, oil gas backflow can ensure the air pressure adjustment balance in engine crankcase communicating pipe, simultaneously Oil gas backflow, which is arranged on the bending section of middle segment pipe communicating pipe, can ensure its own intensity and connection reliability, while its The erosion to cleaner cartridge cleaner can be avoided by being located away from air filter.

As optimization, clamp connection structure is each provided with the interlude pipe ends, clamp connection structure includes convex The clamping for acting the two axially spaced settings of circle for being formed at pipeline periphery is raised, and clip installation is formed with the middle of two circle clampings projections Groove.

Wherein clip installs well width slightly larger than clip width, so, facilitates clip to be directed at clip mounting groove when assembling and enters Row installs banding so that the pipeline of another section of flexible material above clip mounting groove is tightened deformation and drops into clip peace In tankage, it is ensured that the sealing effectiveness of banding.

Further, by an inner circle clamping height of projection is beyond outer one circle clamping height of projection and leans on an inner circle to block Connecing at raised outermost end has a spacing preiection stretched out.It is so more convenient for assembly spacing.Further, clip connects In binding structure, an outer raised lateral surface of circle clamping is is obliquely installed and extends to interlude pipeline end face, with convenient for assembly When two ends flexible ducts insertion.

In summary, the utility model has simple in construction, saves material, convenient to install, fixed reliable, can reduce pair The installation connection request of engine air throttle, the advantages of improving assembling effect.

Brief description of the drawings

Fig. 1 illustrates for a kind of stereochemical structure of motorcar engine admission line system for employing the utility model structure Figure.

Fig. 2 is the structural representation of independent middle segment pipe in Fig. 1.

Fig. 3 is Fig. 2 left view.

Fig. 4 is Fig. 2 top view.

Fig. 5 is that can embody the structural representation of another embodiment of piping fixing structure on middle segment pipe Figure.

Fig. 6 is Fig. 5 top view.

Fig. 7 is the structural representation of independent air inlet muffler pipe in Fig. 1.

Fig. 8 is Fig. 7 left view.

Fig. 9 is that can embody the schematic diagram of another air inlet muffler pipe embodiment structure.

Figure 10 is Fig. 9 left view.

Embodiment

With reference to a kind of motorcar engine admission line system and accompanying drawing for employing the utility model structure to this reality It is described in further detail with new.

Optimal embodiment：As Figure 1-10 shows, a kind of motorcar engine admission line system, including one end are used for and empty The air filter connection segment pipe 1 that filter outlets connect, and the engine linkage section that one end is used for and engine air throttle connects Pipeline 2, wherein, also connected including being fixedly attached to air filter by clip 3 between segment pipe and engine connection segment pipe Middle segment pipe 4（Clip uses spring turbine and worm clip, big with tightening force, circumferential uniform force application, the spy such as band pretensioning effect Point, is adapted to connection herein between hard material pipeline and flexible material pipeline）, the middle material hardness of segment pipe 4 is more than described Air filter to connect and be provided with piping fixing structure on segment pipe 1 and the engine connection material hardness of segment pipe 2, middle segment pipe 4 And be fixedly mounted on by piping fixing structure on coachbuilt body.

So, three segment pipes after in before segment pipe in the middle of solder type piping fixing structure and its gas handling system is divided into, will Middle segment pipe is obtained using harder material and sets piping fixing structure to be fixed on coachbuilt body thereon so that air inlet Pipe-line system can realize that installation is fixed, it is to avoid rock, the generation of the phenomenon such as vibration, and noise is reduced from root and is improved to pipe Pipe protection effect.Air filter connection segment pipe and engine connection segment pipe are made using softer material simultaneously, can be facilitated Installation connection between air filter outlet and engine air throttle, it is ensured that ventilatory effect.Wherein as preferably a kind of choosing Select the air filter connection segment pipe and engine connection segment pipe is made by flexiplast, middle segment pipe is by rigid plastics system , so its cost is cheap, conveniently manufactures and ensure that reaching for the effect above.

In above-mentioned motorcar engine admission line system, the piping fixing structure is included after a flattening in I-shaped Cutting ferrule 5, the center section of cutting ferrule 5 is axially fitted on pipeline outer wall along pipeline, and the left and right ends of the front and rear part of cutting ferrule 5 are all along pipeline Fit to be connected in the horizontal direction after to bending and constitute a suit body for being attached to pipeline outer wall, and the left and right ends of cutting ferrule front and rear part End joint place is provided with bolt hole；Piping fixing structure also includes the supporting support 6 of a curved sheet of entirety, support branch The one end of frame 6 arcuately is horizontal-extending and is correspondingly arranged on two bolts hole, and by bolt 7 and the left and right two of cutting ferrule front and rear part The bolt hole of end end joint place is fixedly connected, and the other end of supporting support 6 is bent to outer lower side to be extended and set along time interval There are two bolts hole and for by being bolted to coachbuilt body.

So, the piping fixing structure can directly carry out assembling installation, with simple in construction, installation side without welding Just, fixed reliable the characteristics of, and the I-shaped cutting ferrule used, middle segment pipe is adjacent to using less material and raising With reference to effect, fixed reliability greatly ensure that.The structure of the supporting support of use, the convenient transition realized with vehicle body connects Connect and with damping, buffering effect, it is ensured that the reliability and permanence of connection.

In above-mentioned motorcar engine admission line system, the cutting ferrule and supporting support are made using stainless steel material, It ensure that support strength.During implementation, the periphery of supporting support 6 has aduncate flange, to improve self-strength.Its In, there is upward fin 8, to improve self-strength in the middle of the horizontal continuation of supporting support 6.Wherein, supporting support 6 is outside Fovea superior is set in the middle part of lower extension portion lower side, to save material and be beneficial to spacing when mounted.Wherein, 6 turns of supporting support Crook outer surface is arranged at intervals with the depressed part 9 of two indents along the longitudinal direction, further to strengthen supporting support intensity.

Referring to Fig. 5-6, as the another embodiment of piping fixing structure, the piping fixing structure includes two edges Pipeline spaced journal stirrup 10 axially back and forth, the inner of journal stirrup 10 is weldingly fixed on pipeline outer wall side medium position, outer end edge Horizontally outward extend, be extended upwards after two lateral bends before and after journal stirrup 10, the bottom of journal stirrup 10 is provided with bolt hole；Pipeline is fixed Structure also includes the supporting support 11 of curved sheet of entirety, and the one end of supporting support 11 arcuately is horizontal-extending and correspondingly Be provided with two bolts hole, and be fixedly connected by the bolt hole corresponding with journal stirrup bottom of bolt 12, the other end of supporting support 11 to Outer lower side bending extension is simultaneously provided with two bolts hole and for by being bolted to coachbuilt body along time interval.

So, although two journal stirrups are installed needs and are welded and fixed, but overall structure is simpler, save material, and equally With easy for installation, the characteristics of fixing reliable.The structure of the supporting support of use, it is convenient to realize and the transition connection of vehicle body and tool There is damping, buffering effect, it is ensured that the reliability and permanence of connection.

In the piping fixing structure of above-mentioned another embodiment, further, the journal stirrup 10 and supporting support 11 are equal It is made using stainless steel material, ensure that support strength.Further the periphery of supporting support 11 has aduncate Flange, to improve self-strength.Further, reinforcement groove 13 is provided with supporting support 11 along in inward-outward direction, to improve Self-strength.Fovea superior is set in the middle part of the outside lower extension portion lower side of supporting support 11, to save material and be beneficial to installing When it is spacing.Elastic shock attenuation set 14 is further provided with the bolt hole of journal stirrup 10, and the bolt 12 of journal stirrup connection passes through elasticity Connected after shock-absorbing sleeve 14, to improve damping effect.

In above-mentioned motorcar engine admission line system, the middle segment pipe 4 includes being located at and air filter linkage section pipe Road connects the flat segments of one end and connects the bending section 15 that segment pipe connects one end, the piping fixing structure positioned at engine It is arranged in flat segments, the outer surface evagination of bending section 15 is formed with latticed reinforcement 26.

So, piping fixing structure is arranged in flat segments, and it can be facilitated to set and install；Middle segment pipe and start Machine connection segment pipe connects one end and is set to bend segment structure, is due to that the pipe joint of engine air throttle is smaller and angle is inclined Difference is larger, makes its installation more inconvenient, therefore one section of bending segment structure and engine connection segment pipe are set on middle segment pipe Connection, undertakes the Partial angle turning demand that engine connects segment pipe by middle segment pipe, can so significantly reduce The setting requirements and installation requirement of segment pipe are connected to engine, convenient the overall of admission line system that complete assembles and ensure dress With effect.The reinforcement set on bending section, can improve the structural strength of this junction, it is ensured that assembling is reliable.

Wherein, it is additionally provided with the bending section 15 of the middle segment pipe 4 for being connected with engine crank case ventilation pipe Oil gas backflow communicating pipe 16.So, oil gas backflow can ensure the air pressure adjustment balance in engine crankcase communicating pipe, together When oil gas backflow be arranged on communicating pipe on the bending section of middle segment pipe and can ensure its own intensity and connection reliability, simultaneously It, which is located away from air filter, can avoid the erosion to cleaner cartridge cleaner.

Wherein, clamp connection structure is each provided with the two ends of middle segment pipe 4, clamp connection structure includes convex shaped Clamping into the two axially spaced settings of circle in pipeline periphery is raised, and clip mounting groove is formed with the middle of two circle clampings projections 17。

Wherein the width of clip mounting groove 17 is slightly larger than clip width, so, facilitates clip to be directed at clip mounting groove when assembling Carry out installation banding so that the pipeline of another section of flexible material above clip mounting groove is tightened deformation and drops into clip In mounting groove, it is ensured that the sealing effectiveness of banding.

Wherein, it is beyond outer one circle clamping height of projection and convex by an inner circle clamping by an inner circle clamping height of projection Rising at outermost end has a spacing preiection 18 stretched out.It is so more convenient for assembly spacing.Further, clamp connection In structure, the outer raised lateral surface of circle clamping to be obliquely installed and extending to interlude pipeline end face, with it is convenient for assembly when The insertion of two ends flexible duct.

Wherein, air filter connection segment pipe 1 integrally bending is set, and close to air filter on air filter connection segment pipe 1 A bellows piece 19 is provided with the front position of device outlet port.

So, air filter connection segment pipe can meet air filter gas outlet angle deflecting connection request, particularly ripple The setting of pipe, more facilitates it to install connection.

Wherein, equal evagination is formed with latticed reinforcement 20 on the pipeline outer wall of the rear and front end of bellows piece 19, to carry Its high bulk strength.

Wherein, bellows piece rear end side is also welded with shape on one piece of outside connecting plate 21, the outer end of connecting plate 21 Into there is neck 22；So, bellows is facilitated to be fixed on by the neck of connecting plate on vehicle body, to avoid the rolling of bellows piece It is dynamic, to ensure stability and preferably abate the noise.Wherein, neck 22 have internally positioned domed clamping chamber and The less clamping entrance of externally-located width.So, the cylindrical anchor structure phase on neck and vehicle body can be facilitated Clamping.

Wherein, use nurse hertz noise elimination original suddenly is additionally provided with the air filter connection segment pipe 19 at back-end location The air inlet muffler pipe of reason.It is formed with for the channel part of ventilation and connects with the channel part in air inlet muffler pipe Chamber portion for producing resonant silencing effect.

So, the setting of air inlet muffler pipe, can eliminate inflow noise in favor of resonant silencing principle, and reduction vehicle is made an uproar Sound pollutes.Silencer position is arranged at rear end and interlude pipeline junction position on air filter connection segment pipe simultaneously, herein For the soft or hard material joining place of pipeline, the silencer of resonant cavity principle is set herein, changes air flow status, can be reached more preferably Soundproof effect.

Wherein, the air inlet muffler pipe includes a core pipe 23, and the front end of core pipe 23 is used for and air filter connects segment pipe 1 It is connected, the rear end of core pipe 23 is used to be connected so that core pipe inner chamber forms the channel part for ventilation, core pipe 23 with middle segment pipe 4 Middle part has circumferentially been evenly arranged some sound attenuation holes 24, and the middle part periphery of core pipe 23 is arranged with a noise elimination shell 25, eliminates the noise outer The two ends of shell 25 and the sealing of core pipe 23 set and constituted between noise elimination shell 25 and core pipe 23 for producing resonant silencing effect Chamber portion.

The silencer of this spline structure, the setting of core pipe can at utmost avoid the interference to air flow, meanwhile, core pipe The sound attenuation hole that surrounding sets noise elimination shell to be formed in resonant cavity, core pipe can realize part soundproof effect, then by noise elimination shell The resonant cavity of formation re-forms part soundproof effect, preferably eliminates pneumatic noise.

Wherein, the two ends outer surface of core pipe 23 is circumferentially arranged clip mounting groove 26, facilitates the installation of clip to fix.

Wherein, the side of the noise elimination shell 25 is designed as what is be gradually reduced from front to back apart from core pipe distance vertically Three-level step-like 27, and every section of side of noise elimination shell stepped outer surface is connected composition not for multistage arcwall face is round and smooth in the circumferential Ruled surface, noise elimination shell opposite side be designed as including vertically forward position one section of direct slope section 28 and rearward one section tiltedly Slope 29 shapes of section, and the side of noise elimination shell 25 is folded to the round and smooth linking composition in connected and junction not for multistage plane in the circumferential Rule is folded to joint face.

So, housing side is designed as that three-level is step-like, preferably can be carried out for the noise of three kinds of frequency segment limits Eliminate the noise, while unique shell mechanism of silencer so that equal structure on its axial front and back position and circumferential all directions position Into irregular and asymmetrical inner-cavity structure, the effect that sound wave reflection interference is eliminated the noise in noise elimination shell inner cavity is so greatly enhanced Really.Inflow noise can at utmost be eliminated.

Wherein, the core pipe 23 is further fixedly arranged on the two circle dividing plates for stretching out and being fixedly attached to noise elimination outer casing inner wall 30, what the outer end of dividing plate 30 was connected to noise elimination shell step is folded to place.

So cause the noise elimination resonant cavity that three different volumes are correspondingly formed at three-level step by two dividing plates, can be more The noise on three frequency bands is targetedly eliminated, noise elimination specific aim is improved and better ensures that frequency of noise elimination segment limit.

, can also further during implementation, dividing plate 30 has the outside of three-level step side close to three in face of noise elimination shell It is provided with through hole, the noise elimination shell that stepped outer surfaces at different levels are the curved surface of evagination in three-level step at level step.

So cause the sound wave reflected in three noise elimination resonant cavities by noise elimination outer casing inner wall, can occur in through hole Negotiation collision, preferably to obtain soundproof effect.

In above-mentioned motorcar engine admission line system, the noise elimination shell 25 is docked by the upper casing and lower casing of injection molded It is connected and obtains, upper casing and the lower casing joint is provided with connection journal stirrup and is fixed on core by sealing welding after connection journal stirrup laminating Pipe is outer.So, manufactured using Shooting Technique, mould is complex, process is more, but high yield rate, performance stabilization.

It is solid also by clip between air inlet muffler pipe and middle segment pipe in above-mentioned motorcar engine admission line system Surely it is connected with an EPDM plastic flexible pipe 31.The core pipe for being so due to air inlet muffler pipe is plastic rigid pipe, and interlude pipe Road is identical rigid plastics, therefore sets up one end plastic flexible pipe, it is ensured that both connection sealing effectiveness.

Fig. 9 and Figure 10 disclose another air inlet muffler pipe embodiment structure, wherein, in above-mentioned air inlet pipe On the basis of acoustic wave filter structure, the setting of dividing plate is eliminated, while muffler shell 25 is obtained using integral blow, core is inserted into The sealing fixation of pipe 23 forms silencer, and other structures are consistent with the air inlet pipe acoustic wave filter structure of above-mentioned embodiment, so have Mould is simple, the few advantage of process, but yield rate is relatively low.

Claims (7)

1. a kind of solder type piping fixing structure, for realizing segment pipe and vehicle body in the middle of motorcar engine admission line system It is fixedly connected, it is characterised in that the piping fixing structure includes two along pipeline spaced journal stirrup, journal stirrup axially back and forth The inner is weldingly fixed on pipeline outer wall side medium position, and outer end is horizontally outer to be extended, before and after journal stirrup after two lateral bends upwards It is extended, journal stirrup bottom is provided with bolt hole；Piping fixing structure also includes the supporting support of a curved sheet of entirety, The one end of supporting support arcuately is horizontal-extending and is correspondingly arranged on two bolts hole, and by the corresponding spiral shell of bolt and journal stirrup bottom Keyhole is fixedly connected, and the supporting support other end is bent to outer lower side to be extended and time interval is provided with two bolts hole and is used for By being bolted on coachbuilt body.

2. solder type piping fixing structure as claimed in claim 1, it is characterised in that the journal stirrup and supporting support are used Stainless steel material is made.

3. solder type piping fixing structure as claimed in claim 1, it is characterised in that the supporting support periphery has inside The flange of bending.

4. solder type piping fixing structure as claimed in claim 1, it is characterised in that along inward-outward direction in the supporting support On be provided with reinforcement groove.

5. solder type piping fixing structure as claimed in claim 1, it is characterised in that the supporting support extends to outer lower side Fovea superior is set in the middle part of the lower side of part.

6. solder type piping fixing structure as claimed in claim 1, it is characterised in that set in the bolt hole of journal stirrup flexible Shock-absorbing sleeve, and the bolt of journal stirrup connection pass through connection after elastic shock attenuation set.

7. segment pipe in the middle of a kind of gas handling system, middle segment pipe one end is used for and the air filter connection segment pipe connection other end is used Connected in engine connection segment pipe, it is characterised in that the middle segment pipe includes being located at and air filter connects segment pipe Connect the flat segments of one end and connect the bending section that segment pipe connects one end, bending section outer surface evagination positioned at engine It is formed with latticed reinforcement；Set on middle segment pipe just like the weldering described in any one of claim 1-6 claim Direct type piping fixing structure.