JP2006207247A - Protective wall insertion structure of hose - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective wall insertion structure of a hose reducing noise leaking through a hose insertion hole provided in a protective wall, reducing the influence of engine generated heat on hydraulic equipment or the like and preventing the damage of the hose inserted through the hose insertion hole. <P>SOLUTION: The hose insertion hole 5h is opened in the protective wall 5 installed around an engine room of a construction machine, and the hose 8 such as a hydraulic hose, a cooling water hose, an aftercooler hose or an air-conditioning circuit hose is inserted through the hose insertion hole 5h. A hose cover 1 made of rubber or synthetic resin is fitted to the hose 8 inserted through the hose insertion hole 5h of the protective wall 5. The hose cover 11 has a cylindrical cover body 12 fitted to the hose 8, and a flange part 13 integrally provided around the cover body 12. An end face 14 on the opposite side to the cover body 12, of the flange part 13 abuts on the protective wall 5 and is fastened to the protective wall 5 by a screw or the like not shown in the figure. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hose protective wall insertion structure for inserting a hose into a hose insertion hole of a protective wall.

  A protective wall called a firewall is installed between the engine mounted on the vehicle and the operator's cab to reduce the influence of the heat generated from the engine on the hydraulic equipment and the like (for example, see Patent Documents 1 and 2). .

  FIG. 13 shows an outline of the power unit mounted on the upper swing body of the hydraulic excavator. The engine chamber 2 in which the engine 1 is installed and the pump chamber 4 in which the hydraulic pump 3 driven by the engine 1 is installed. A protective wall 5 is installed between them, and a protective wall 5 is also installed between the engine chamber 2 and the radiator chamber 7 where the cooling package 6 is installed. The engine chamber 2, the pump chamber 4, and the radiator chamber 7 are covered with an engine hood, a side cover, a side door, and the like (not shown).

  The cooling package 6 is a collection of heat exchangers such as an engine cooling radiator, an oil cooler for hydraulic circuit hydraulic oil cooling, an aftercooler for compressed air after-cooling by a turbocharger, and a condenser for an air conditioning circuit.

  The protective wall 5 prevents oil from entering the engine compartment 2 even when the hydraulic pump 3, the oil cooler of the cooling package 6, or these hydraulic hoses are damaged.

  Hose 8 such as a hydraulic hose, a cooling water hose, an aftercooler hose, and an air conditioning circuit hose is required to be connected between the engine chamber 2 and the pump chamber 4 or between the engine chamber 2 and the radiator chamber 7 due to the structure. Therefore, in order to pass these hoses 8, as shown in FIG. 14, a hose insertion hole 5h having a diameter sufficiently larger than that of the hose 8 is formed in the protective wall 5, and an opening edge of the hose insertion hole 5h is formed. The rubber member 9a having a flat ring shape is fixed to the rubber member 9 or the rubber member 9b having a concave cross section ring shape is fitted as shown in FIG. 15, so that the opening edge of the hose insertion hole 5h and the hose 8 are directly connected. To prevent contact.

Airframe noise is the largest due to engine noise, and the need to surround the engine compartment 2 is increasing in order to reduce airframe noise. And in order to achieve the target of noise reduction which becomes severe year by year, it is desirable that the gap 9c between the hose 8 and the rubber members 9a, 9b of the hose insertion hole 5h is as small as possible.
JP-A-10-96248 (first page, FIG. 1) JP 2002-256923 A (first page, FIG. 1)

  In this way, as a result of reducing the gap 9c between the rubber members 9a, 9b of the hose insertion hole 5h and the hose 8 in the protective wall 5 of the engine compartment 2, the influence of engine generated heat on hydraulic equipment and the like can be reduced, and the fuselage Noise can be reduced, but if the gap 9c between the hose 8 and the rubber members 9a and 9b is reduced, the frequency of interference between the hose 8 and the rubber members 9a and 9b due to hose vibration and machine vibration during operation increases. The hose 8 is easily worn, and in some cases, there is a problem that the hose is defective in drilling.

  The present invention has been made in view of such points, and it is possible to reduce noise leaking through a hose insertion hole provided in a protective wall and to reduce the influence of engine generated heat on hydraulic equipment and the like. An object of the present invention is to provide a hose protective wall insertion structure that can prevent damage to the hose inserted through the hose insertion hole.

  The invention described in claim 1 comprises a protective wall having a hose insertion hole through which a hose is inserted, and a hose cover fitted to the hose inserted in the hose insertion hole of the protective wall. A hose cover insertion structure comprising: a cover body fitted to the hose; and a flange portion provided around the cover body and abutted against the protective wall to be fixed; and a hose cover cover By fitting the main body to the hose and fixing the hose cover flange against the protective wall, the hose cover closes the hose insertion hole in the protective wall, so that noise leaking through the hose insertion hole can be prevented. In addition to reducing the impact of engine generated heat on hydraulic equipment, etc., hose cover prevents hose insertion hole and hose from interfering with hose damage, Worn can be prevented.

  According to a second aspect of the present invention, in the hose protective wall insertion structure according to the first aspect, the hose cover is fastened to the peripheral surface of the hose. Is fixed to the peripheral surface of the hose, and the movement of the hose is regulated through this hose cover.

  A third aspect of the present invention is the hose cover in the protective wall insertion structure for the hose according to the first or second aspect, wherein one side of the hose cover is fitted to one side of the hose, and the other side of the hose. A half-hose hose cover on the other side to be fitted to the hose cover, and a half-hose hose cover on one side and a half-hose hose cover on the other side fitted from any side of the hose. And it is easy to incorporate these hose covers into the hose.

  According to a fourth aspect of the present invention, the hose cover in the protective wall insertion structure of the hose according to the first or second aspect is provided with an axial slit, and the slit is opened so that the hose cover is an optional hose. It is possible to fit the hose cover to the hose from the side, and the hose cover can be easily assembled to the hose.

  According to a fifth aspect of the present invention, in the hose protective wall insertion structure according to any one of the first to fourth aspects, the flange portion of the hose cover includes a convex portion formed in an annular shape on the contact surface with the protective wall. In addition, the projecting portion formed in an annular shape on the flange portion of the hose cover improves the adhesion of the flange portion to the protective wall, and helps reduce noise leaking through the hose insertion hole.

  The invention according to claim 6 is the hose cover flange portion in the hose protective wall insertion structure according to any one of claims 1 to 4, wherein the contact surface with the protective wall is provided with a tapered surface, And the taper surface of the flange part of a hose cover improves the adhesiveness of the flange part with respect to a protective wall, and it is useful for reduction of the noise which leaks through a hose penetration hole.

  The invention according to claim 7 is the hose cover in the protective wall insertion structure of the hose according to any one of claims 1 to 4, wherein the flange portion is slidably fitted to the cover body by a spherical bearing. The angle of the flange portion with respect to the cover body is variably adjusted by the spherical bearing, so that the angle of the hose relative to the protective wall can be changed freely.

  According to the first aspect of the present invention, the hose cover is inserted into the hose cover by fitting the cover body of the hose cover to the hose and fixing the hose cover flange portion against the protective wall. Since the hole is closed, the noise leaking through the hose insertion hole can be reduced, and the influence of engine generated heat on the hydraulic equipment, etc. can be reduced, and the hose cover can interfere with the hose insertion hole of the protective wall and the hose. By preventing this, damage and wear of the hose can be prevented.

  According to invention of Claim 2, a hose cover can be fixed to the surrounding surface of a hose with a fastener, and movement of a hose can be controlled via this hose cover.

  According to the third aspect of the present invention, the half-hose hose cover on one side and the half-hose hose cover on the other side can be fitted from any side to any part of the hose. Easy to embed.

  According to invention of Claim 4, a slit can be opened and a hose cover can be fitted to the arbitrary places of a hose from a side, and the integration of a hose cover with respect to a hose can be made easy.

  According to the fifth aspect of the present invention, the convexity formed in the flange portion of the hose cover can improve the adhesion of the flange portion to the protective wall, and reliably reduce the noise leaking through the hose insertion hole. Can be a thing.

  According to the sixth aspect of the present invention, the taper surface of the flange portion of the hose cover can improve the adhesion of the flange portion to the protective wall, and can reliably reduce noise leaking through the hose insertion hole.

  According to the seventh aspect of the present invention, the angle of inclination of the flange portion with respect to the cover main body is variably adjusted by the spherical bearing, so that the change in the angle of the hose with respect to the protective wall can be dealt with freely.

  Hereinafter, the present invention will be described in detail with reference to various embodiments shown in FIGS.

  FIG. 1 shows a first embodiment, and a hose insertion hole 5h is opened in a protective wall 5 installed around an engine room provided in a construction machine such as a hydraulic excavator, and this hose insertion hole 5h. A hose 8 such as a hydraulic hose, a cooling water hose, an aftercooler hose or an air conditioning circuit hose is inserted into the hose 8.

  A hose cover 11 made of rubber or synthetic resin is fitted to the hose 8 inserted through the hose insertion hole 5h of the protective wall 5. The hose cover 11 includes a cylindrical cover body 12 fitted to the hose 8 and a flange portion 13 integrally provided around the cover body 12. The opposite end surface 14 is in contact with the protective wall 5 and is fixed to the protective wall 5 by screws or the like (not shown).

  Then, the cover body 12 of the hose cover 11 is fitted to the hose 8, and the end surface 14 of the flange portion 13 of the hose cover 11 is brought into contact with the protective wall 5 to be fastened. Since the hose insertion hole 5h is closed, it is possible to reduce machine noise leaking through the hose insertion hole 5h and to reduce the influence of engine generated heat on the hydraulic equipment and the like. By preventing the hose insertion hole 5h and the hose 8 from interfering with each other, the hose 8 can be prevented from being damaged or worn.

  Next, FIG. 2 shows a second embodiment. Similarly to the first embodiment shown in FIG. 1, the hose 8 inserted through the hose insertion hole 5h of the protective wall 5 includes a hose. A cover 11 is fitted, and the hose cover 11 includes a cylindrical cover body 12 fitted to the hose 8 and a flange portion 13 provided integrally around the cover body 12. An end surface 15 on the cover body 12 side of 13 is in contact with the protective wall 5 and is fixed by screws or the like (not shown).

  Then, the cover body 12 of the hose cover 11 is fitted to the hose 8 and is fitted to the hose insertion hole 5h of the protective wall 5, and the end surface 15 of the flange portion 13 of the hose cover 11 is brought into contact with the protective wall 5 and fixed. As a result, the hose cover 11 closes the hose insertion hole 5h of the protective wall 5, so that the noise of the airframe leaking through the hose insertion hole 5h is reduced and the influence of engine generated heat on the hydraulic equipment is reduced. In addition, the hose cover 11 prevents the hose 8 from being damaged and worn by preventing the hose insertion hole 5h of the protective wall 5 from interfering with the hose 8.

  Next, FIG. 3 shows a third embodiment. Similarly to the first embodiment shown in FIG. 1, the hose 8 inserted through the hose insertion hole of the protective wall 5 includes a hose cover. 11 is fitted, and the hose cover 11 includes a cylindrical cover body 12 fitted to the hose 8 and a flange portion 13 provided integrally around the cover body 12. The end surface opposite to the cover main body 12 is in contact with the protective wall 5 and fixed to the protective wall 5 with screws or the like not shown.

  Furthermore, a fastener 16 for fastening the hose cover 11 to the peripheral surface of the hose 8 is attached to the cover body 12 of the hose cover 11 fitted to the hose 8. The fastener 16 includes a band portion 17 wound around the cover body 12 of the hose cover 11 and a fastening screw 18 for fastening the band portion 17. May be used.

  Then, the band portion 17 is fastened by the fastening screw 18 of the fastener 16 to fix the hose cover 11 to the peripheral surface of the hose 8, and the flange portion 13 of the hose cover 11 is fastened to the protective wall 5. The movement of the hose 8 can be regulated via the hose cover 11.

  Next, FIG. 4 shows a fourth embodiment, and the hose of the protective wall 5 is the same as the first embodiment shown in FIG. 1 or the second embodiment shown in FIG. The hose cover 11 is fitted to the hose 8 inserted through the insertion hole 5h. The hose cover 11 includes a half-cracked hose cover 11a on one side fitted to one side of the hose 8, The other side half-hose hose cover 11b fitted to the other side portion of the hose 8 is provided.

  Each of these half-cracked hose covers 11a and 11b includes a cylindrical cover main body 12a and 12b fitted to the hose 8, and a flange portion 13b integrally provided around the cover main bodies 12a and 12b. 13b and half. The fasteners 16 shown in FIG. 3 are wound around the cover bodies 12a and 12b of the half-hose hose covers 11a and 11b. Is fastened to the peripheral surface of the hose 8.

  The half-hose cover 11a on one side and the half-hose cover 11b on the other side can be fitted to any part of the hose 8 from the side, and these hose covers 11a and 11b are assembled into the hose 8. Can be easily done.

  Next, FIG. 5 and FIG. 6 show a fifth embodiment, which is similar to the first embodiment shown in FIG. 1 or the second embodiment shown in FIG. A hose cover 11 is fitted to the hose 8 inserted through the hose insertion hole 5h, and the hose cover 11 is integrally formed around the cylindrical cover body 12 fitted to the hose 8 and around the cover body 12. The hose cover 11 is provided with a slit 19 in the axial direction from the cover main body 12 to the flange portion 13.

  Then, the cover body 12 of the hose cover 11 is fitted to the hose 8 so as to widen the slit 19, and the hose cover 11 is fastened around the cover body 12 as shown in FIG. The tool 16 is fastened to the peripheral surface of the hose 8. If the hose cover 11 has a restoring force to clip the hose 8 by itself, the fastener 16 is not necessarily required.

  Thus, the slit 19 can be opened, and the cover main body 12 of the hose cover 11 can be fitted into an arbitrary portion of the hose 8 from the side, so that the hose cover 11 can be easily assembled into the hose 8.

  Next, FIG. 7 and FIG. 8 show a sixth embodiment. Similarly to the first embodiment shown in FIG. 1, the hose 8 inserted into the hose insertion hole 5h of the protective wall 5 is shown in FIG. A hose cover 11 is fitted, and the hose cover 11 includes a cylindrical cover body 12 fitted to the hose 8 and a flange portion 13 provided integrally around the cover body 12. The end surface of the portion 13 opposite to the cover main body 12 is in contact with the protective wall 5 and is fixed to the protective wall 5 with screws (not shown). The protective wall at the flange portion 13 of the hose cover 11 A small-diameter convex portion 21 and a large-diameter convex portion 22 that are formed in an annular shape are provided concentrically on the abutting surface with respect to 5. The cross-sectional shapes of these convex portions 21 and 22 are formed in a square shape.

  Then, the convex portions 21 and 22 formed annularly on the flange portion 13 of the hose cover 11 can improve the adhesion of the flange portion 13 to the protective wall 5, and the annular convex portions 21 and 22 surround the hose insertion hole 5h. Can be sealed twice, so that the noise leakage through the hose insertion hole 5h can be reliably reduced.

  Next, FIG. 9 shows a seventh embodiment. Like the sixth embodiment, the contact surface of the flange portion 13 of the hose cover 11 with the protective wall 5 is formed in an annular shape. The small-diameter convex portion 21 and the large-diameter convex portion 22 are concentrically provided, and the cross-sectional shapes of these convex portions 21 and 22 are formed in an arc shape.

  Then, the convex portions 21 and 22 formed annularly on the flange portion 13 of the hose cover 11 can improve the adhesion of the flange portion 13 to the protective wall 5, and the annular convex portions 21 and 22 surround the hose insertion hole 5h. Can be sealed twice, so that the noise leakage through the hose insertion hole 5h can be reliably reduced. In particular, since the tip portions of the convex portions 21 and 22 formed in an arcuate cross section are easily deformed, the adhesion to the protective wall 5 is high.

  Next, FIG. 10 shows an eighth embodiment. Similarly to the first embodiment shown in FIG. 1, the hose cover 11 is attached to the hose 8 inserted through the hose insertion hole 5 h of the protective wall 5. The hose cover 11 includes a cylindrical cover body 12 fitted to the hose 8 and a flange portion 13 integrally provided around the cover body 12. The end surface opposite to the cover body 12 is in contact with the protective wall 5 and is fixed to the protective wall 5 with a screw or the like (not shown). A taper surface 23 is formed on the contact surface.

  Further, the taper surface 23 of the flange portion 13 of the hose cover 11 can improve the adhesion of the outer peripheral edge portion of the flange portion 13 to the protective wall 5 and can surely reduce noise leaking through the hose insertion hole 5h. .

  Next, FIG. 11 shows a ninth embodiment. Similarly to the first embodiment shown in FIG. 1, the hose cover 11 is attached to the hose 8 inserted through the hose insertion hole 5h of the protective wall 5. The hose cover 11 includes a cylindrical cover body 12 fitted to the hose 8 and a flange portion 13 provided around the cover body 12. The hose cover 11 is in contact with the wall 5 and is fixed to the protective wall 5 with screws (not shown). The hose cover 11 has a flange portion 13 slidably fitted to the cover body 12 by a spherical bearing 24. Yes. The spherical bearing 24 is configured such that a concave spherical surface 26 formed integrally with the flange portion 13 is slidably fitted to a hemispherical convex spherical surface 25 formed integrally with the cover body 12.

  The angle of the hose 8 relative to the protective wall 5 can be freely changed by variably adjusting the inclination angle of the flange portion 13 with respect to the cover body 12 by the spherical bearing 24 that slides the concave spherical surface 26 with respect to the hemispherical convex spherical surface 25. It can correspond to.

  Next, FIG. 12 shows a tenth embodiment. Like the ninth embodiment, the flange portion 13 is slidably fitted to the cover body 12 of the hose cover 11 by a spherical bearing 24. However, the spherical bearing 24 is slidably fitted into a spherical convex spherical surface 25 formed integrally with the cover body 12 and a concave spherical surface 26 formed integrally with the flange portion 13. It is a thing.

  The angle of the hose 8 relative to the protective wall 5 can be changed freely by variably adjusting the inclination angle of the flange portion 13 with respect to the cover body 12 by the spherical bearing 24 that slides the concave spherical surface 26 with respect to the spherical convex spherical surface 25. It can respond to. Particularly, by making the spherical bearing 24 into a spherical shape, it is possible to cope with a wide range of angle changes.

  The hose protective wall insertion structure of the present invention is not limited to a hydraulic excavator, but can be applied to all construction machines having a protective wall.

It is sectional drawing which shows 1st Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is sectional drawing which shows 2nd Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is a perspective view which shows 3rd Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is a hose cover front view which shows 4th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is a hose cover front view which shows 5th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is a hose cover side view of 5th Embodiment same as the above. It is sectional drawing which shows 6th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is a hose cover back view of a 6th embodiment same as the above. It is sectional drawing which shows 7th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is sectional drawing which shows 8th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is sectional drawing which shows 9th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is sectional drawing which shows 10th Embodiment of the protective wall penetration structure of the hose which concerns on this invention. It is sectional drawing which shows the outline of the power unit mounted in the upper revolving body of a hydraulic shovel. It is sectional drawing which shows an example of the protection wall penetration structure of the conventional hose. It is sectional drawing which shows the other example of the protection wall penetration structure of the conventional hose.

Explanation of symbols

5 Protective walls
5h hose insertion hole 8 hose
11 Hose cover
11a Half crack hose cover on one side
11b Half crack hose cover on the other side
12 Cover body
13 Flange
16 Fastener
19 Slit
21, 22 Convex part
23 Tapered surface
24 Spherical bearing

Claims (7)

A protective wall with a hose insertion hole through which the hose is inserted, and
A hose cover fitted to the hose inserted through the hose insertion hole of the protective wall,
The hose cover
A cover body fitted to the hose;
A hose protective wall insertion structure characterized by comprising a flange portion provided around the cover body and abutted against the protective wall to be fixed. The hose protective wall insertion structure according to claim 1, further comprising a fastener for fastening the hose cover to the peripheral surface of the hose. The hose cover
A half-cracked hose cover on one side fitted to one side of the hose;
The hose protective wall insertion structure according to claim 1 or 2, further comprising a half-hose hose cover on the other side fitted to the other side of the hose. The hose cover has a slit in the axial direction. The protective wall insertion structure for a hose according to claim 1 or 2. The hose protective wall insertion structure according to any one of claims 1 to 4, wherein the flange portion of the hose cover includes a ring-shaped convex portion on a contact surface with the protective wall. The hose protection wall insertion structure according to any one of claims 1 to 4, wherein the flange portion of the hose cover includes a tapered surface on a contact surface with the protection wall. The hose cover insertion structure for a hose protective wall according to any one of claims 1 to 4, wherein the hose cover is slidably fitted to the cover body by a spherical bearing.

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