WO2006003713A1

WO2006003713A1 - Mounting structure of particulate filter

Info

Publication number: WO2006003713A1
Application number: PCT/JP2004/009548
Authority: WO
Inventors: Takumi Asano
Original assignee: Hino Motors, Ltd.
Priority date: 2004-07-06
Filing date: 2004-07-06
Publication date: 2006-01-12

Abstract

[PROBLEMS] To rather easily dismount and mount a particular filter from and on a chassis frame and effectively prevent elastic bodies interposed therebetween from being damaged. [MEANS FOR SOLVING PROBLEMS] The particulate filter (12) detachably mounted in the exhaust pipe (10) of an engine is mounted on the chassis frame (11). One ends of mounting brackets (22) are fitted to the chassis frame (11), one ends of intermediate brackets (26) are fitted to the other ends of the mounting brackets (22) through the elastic bodies (23) and (24), and the particulate filter (12) is detachably fitted to the other ends of the intermediate brackets (26). The particulate filter (12) is formed in a cylindrical shape having the same axis as the exhaust pipe (10), band plates (17) and (18) are installed around the particulate filter (12) at the front and rear positions, and the particulate filter (12) is detachably fitted to the other ends of the intermediate brackets (26) through the band plates (17) and (18).

Description

Specification

Particulate filter mounting structure

Technical field

TECHNICAL FIELD [0001] The present invention relates to a particulate filter mounting structure for mounting a particulate filter removably mounted on an exhaust pipe of an engine to a chassis frame.

Background art

[0002] With regard to the conventional vehicle-side layout of the exhaust system, countermeasures for exhaust gas noise have been taken only with a muffler, but in recent years, exhaust gas purification regulations have been strengthened to reduce the particulates contained in the exhaust gas. Therefore, a particulate filter is attached to the exhaust pipe of the engine, and the particulates are collected and removed by the filter. When attaching this particulate filter to the chassis frame, install three L-shaped brackets on the chassis frame, attach the exhaust pipe mounting brackets to these brackets via elastic bodies, and use the first mounting bracket. Support the exhaust pipe upstream of the particulate filter, insert the exhaust pipe downstream of the particulate filter into the exhaust pipe upstream of the muffler, and support the exhaust pipe upstream of the muffler with the second mounting bracket A particulate filter mounting structure is provided in which the exhaust pipe on the downstream side of the muffler is supported by a third mounting bracket (see, for example, Patent Document 1).

[0003] According to this particulate filter mounting structure, the number of mounting locations is reduced, the work is improved, and the length of the entire exhaust pipe to which the particulate filter is mounted is shortened, so that the vehicle has a short wheel base. It can also be easily installed. In addition, by attaching an exhaust pipe mounting bracket to the bracket via a rigid body, it absorbs vibrations and impact loads in the vertical direction and the front-rear direction as the vehicle travels.

Patent Document 1: Japanese Utility Model Publication No. 5-89823

Disclosure of the invention

Problems to be solved by the invention

[0004] However, when the particulate filter is used for a predetermined time, the particulate is accumulated. Therefore, the work is periodically removed from the exhaust pipe and cleaned.

. Then, as shown in Patent Document 1, when the particulate filter is attached to the chassis frame via the exhaust pipe, the exhaust pipe is removed from the chassis frame as a removal operation for cleaning the filter, and the removed exhaust gas is further removed. Two steps were required to remove the filter from the tube. In order to reattach the filter after cleaning, it was necessary to attach the exhaust pipe to the chassis frame after attaching the filter to the exhaust pipe. Here, because the filter is relatively heavy at 15kg and 30kg, it is relatively difficult to remove and install the exhaust pipe to which the filter is attached, and to remove or install the filter from the exhaust pipe. was there.

In addition, if the attachment and removal are repeated frequently, the elastic body interposed in the bracket for attaching the exhaust pipe to the chassis frame is damaged, and there is a problem that the original function is impaired.

An object of the present invention is to provide a particulate filter mounting structure that is relatively easy to remove from and attach to a chassis frame and that can effectively prevent damage to an elastic body interposed therebetween.

Means for solving the problem

As shown in FIG. 1, the invention according to claim 1 is an improvement of the particulate filter mounting structure in which the particulate filter 12 removably attached to the exhaust pipe 10 of the engine is attached to the chassis frame 11. is there.

The characteristic configuration is that one end of the mounting bracket 22 is attached to the chassis frame 11, one end of the intermediate bracket 26 is attached to the other end of the mounting bracket 22 via elastic bodies 23, 24, and the other end of the intermediate bracket 26 is attached. The particulate filter 12 is removably attached.

In the particulate filter mounting structure according to claim 1, the particulate filter 12 is detachably attached to the other end of the intermediate bracket 26, so the exhaust pipe 10 is removed when the filter 12 is removed or attached. I don't need it. Therefore, the operation becomes relatively easy as compared with the conventional case in which the exhaust pipe needs to be removed from the chassis frame when the filter 12 is removed or attached. In particular, if the filter 12 is installed in the vertical direction, the filter 12 is relatively heavy at 15-30 kg. Removal of or attachment of the filter 12 can be further facilitated by supporting it with a forklift or the like that moves in the direction.

Also, when removing and installing the filter 12, it is necessary to remove the elastic bodies 23 and 24 interposed between the mounting bracket 22 and the intermediate bracket 26. Therefore, it is possible to effectively prevent the elastic bodies 23 and 24 from being damaged due to the removal and attachment.

[0007] The invention according to claim 2 is the invention according to claim 1, wherein the particulate filter 12 is formed in a cylindrical shape having an axial center coaxial with the exhaust pipe 10, and around the particulate filter 12 This is a particulate filter mounting structure in which strip plates 17 and 18 are provided, and the particulate filter 12 is detachably mounted to the other end of the intermediate bracket 26 via the strip plates 17 and 18.

In the particulate filter mounting structure according to claim 2, the particulate filter 12 can be moved in the axial direction with the particulate filter 12 mounted on the chassis frame 11, and the filter 12 is connected to the exhaust pipe 10. The connection work can be done relatively easily and reliably.

The invention's effect

In the particulate filter mounting structure of the present invention, one end of the mounting bracket is mounted on the chassis frame, one end of the intermediate bracket is mounted on the other end of the mounting bracket via an elastic body, and the other end of the intermediate bracket is attached to the other end of the intermediate bracket. Since the curated filter is removably attached, it is not necessary to remove the exhaust pipe when removing or attaching the filter. Therefore, the operation becomes relatively easy as compared with the conventional method in which the exhaust pipe must be removed from the chassis frame when removing or installing the filter. In particular, if the movement of the filter itself accompanying removal or installation of the filter is in the vertical direction, the filter is relatively heavy, but by supporting the filter with a forklift or the like that moves up and down, The removal or attachment of the filter can be further facilitated.

[0009] Further, when removing and installing the filter, it is not necessary to remove the elastic body interposed between the mounting bracket and the intermediate bracket. Therefore, it is possible to effectively prevent the elastic body from being damaged due to the removal and attachment.

Further, the particulate filter is formed in a cylindrical shape having an axial center coaxial with the exhaust pipe, and the particulate filter is formed. If a band plate is provided around the front and back of the particulate filter, and the particulate filter is attached to the other end of the intermediate bracket via the band plate, the particulate filter shaft is attached with the particulate filter attached to the chassis frame. The movement of the direction becomes possible, and the operation of connecting the filter to the exhaust pipe can be performed relatively easily and reliably.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, the best mode for carrying out the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a flange 10a is formed at the rear end of the exhaust pipe 10 communicating with an exhaust manifold (not shown) of the engine. The exhaust pipe 10 is attached along the side member 11a constituting the chassis frame 11. The flange 10a has a flange 13a at the front end of the particulate filter 12 by a first bolt 14 and a first nut 16. Connected (Figure 1). The particulate filter 12 attached to the rear end of the exhaust pipe 10 is attached to the exhaust pipe 10 along the side member 11a. The particulate filter 12 is connected to the exhaust pipe 10 by the first bolt 14 and the first nut 16. Removably mounted on

The particulate filter 12 is formed in a cylindrical shape having an axial center coaxial with the axial center at the rear end of the exhaust pipe 10, and has a large diameter portion 12 a that accommodates a filter main body (not shown) and its large diameter portion 12 a. And small diameter portions 12b and 12c formed on the front and rear sides. The inlet pipe 13 is provided so as to protrude coaxially with the front-side small-diameter portion 12b, and the outlet pipe 12d protrudes coaxially from the rear-side small-diameter portion 12c. Two semicircular strips 17 and 18 are provided around the small diameter portions 12b and 12c before and after the particulate filter 12 so as to sandwich the small diameter portions 12b and 12c from above and below, respectively. Another channel-shaped hanging tool 19 is welded to the upper part of the upper strip 17, and a substantially horizontal top surface is formed on the hanging tool 19. Then, the two second bolts 21 and 21 are welded vertically to the top surface with the male screw portion facing upward (FIGS. 2 and 3).

On the other hand, one end of a mounting bracket 22 bent into an L shape is attached to the side member 11a corresponding to the hanging tool 19. In this embodiment, the mounting bracket 22 is attached to the side member 11a by welding, and one end of the intermediate bracket 26 is attached to the other end of the mounting bracket 22 via elastic bodies 23 and 24. Installation of the intermediate bracket 26 It is attached by a third bolt 27 and a third nut 28 (FIG. 3).

As shown in detail in FIG. 3, a through hole 22 a is formed at the other end of the mounting bracket 22. Two annular rubbers 23 and 24, which are elastic bodies, are attached to the through hole 22a. In other words, the annular rubbers 23, 24 are formed integrally with flanges 23a, 24a having a diameter larger than the through hole 22a and insertion parts 23b, 24b that can be inserted into the through holes 22a. Bolt penetration holes 23c and 24c are provided at the centers of the insertion parts 23b and 24b, respectively. Through hole 22 at the other end of the mounting bracket 22 Ring plates 23 and 24 that contact the edge of the hole 23a and 24b The outer surface of the insertion parts 23b and 24b and the following outer surfaces of the flanges 23a and 24a Is done. On the other hand, an attachment hole 26 a is formed at one end of the intermediate bracket 26.

[0014] To attach one end of the intermediate bracket 26 to the other end of the mounting bracket 22, first, insert the insertion portions 23b, 24b of the annular rubbers 23, 24 with the two steel plates 23d, 24d into the through holes in the other end of the mounting bracket 22. Insert it facing from both sides of 22a, and pinch the edge of the hole 22a between the two flanges 23a and 24a. Next, as shown in FIG. 3, the collar 31 is inserted into the bolt insertion holes 23c, 24c of the two annular rubbers 23, 24 sandwiched as shown in FIG. 3, and is inserted into the mounting hole 26a at one end of the intermediate bracket 26 from below. Insert 3 bolts 27 into the collar 31. A disc-shaped presser plate 32 having the same outer diameter and inner diameter as the annular rubber 24 is inserted into the male screw portion of the third bolt 27 projecting upward from the upper annular rubber 23, and the flange of the annular rubber 24 is inserted. 24a Touch the outer surface. In this state, the third nut 28 is screwed onto the third bolt 27, and one end of the intermediate bracket 26 is attached to the other end of the mounting bracket 22 via the annular rubbers 23 and 24, which are elastic bodies. These annular rubbers 23 and 24 move the exhaust pipe 10 and the particulate filter 12 up and down while traveling due to unevenness of the road surface, etc., or swing back and forth due to sudden start and braking, causing vibration and shock of the intermediate bracket 26 When a load is applied to the annular rubbers 23 and 24, the annular rubbers 23 and 24 expand and contract to absorb this vibration and impact load.

[0015] The intermediate bracket 26 is formed by bending in a crank shape so that the other end is in surface contact with the top surface of the hanging tool 19, and two second bolts 21 welded to the hanging tool 19 at the other end. , 21 are formed through holes 26b, 26b through which the male threaded portions pass (FIGS. 2 and 3). The particulate filter 12 is attached to the other end of the intermediate bracket 26. As shown in Fig. 2, first of all, insert the male screw 咅 B of the two second Bonole 卜 21 and 21? L26b, 26b The particulate filter 12 is positioned so as to be positioned below, and then the particulate filter 12 is lifted as indicated by a solid line arrow using a device such as a forklift 34, and the two second welded to the suspender 19 The male screw parts of the bolts 21 and 21 are passed through the through holes 26b and 26b at the other end of the intermediate bracket 26, respectively. Next, as shown in FIG. 1, the particulate filter 12 is detachably attached to the other end of the intermediate bracket 26 by screwing the second nut 33 into the third bolt 27.

[0016] The removal of the particulate filter mounting structure configured as described above and the operation at the time of mounting will be described.

First, in order to remove the filter 12 for cleaning the particulate filter 12, the filter 12 is supported from below by a device such as a forklift 34. In this state, the first bolt 14 and the first nut 16 that fasten the flange 10a at the rear end of the exhaust pipe 10 and the flange 13a of the inlet pipe 13 of the particulate filter 12 are released, and the exhaust pipe 10 And disconnect the particulate filter 12. Next, the second bolt 21 and the second nut 33 that fasten the other end of the intermediate bracket 26 and the hanging tool 19 are unscrewed, and the other end of the intermediate bracket 26 and the hanging tool 19 are Disconnect the connected particulate filter 12.

Thereafter, the filter 12 is lowered by a device such as a forklift 34 that supports the filter 12 from below, and the two second bolts 21, 21 welded to the hanging tool 19 are attached to the other end of the intermediate bracket 26. Remove from insertion holes 26b, 26b. As a result, the particulate filter 12 is removed from the exhaust pipe 10 and the side member 11a, which is the chassis frame 11, and is transported to a cleaning place by a device such as a forklift 34.

In order to re-install the particulate filter 12 after cleaning, the male threads of the two second bolts 21 and 21 welded to the hanging tool 19 using a device such as a forklift 34 or the like are inserted into the through holes 26b and 26b. The particulate filter 12 is positioned so as to be positioned below, and then raised so that the male threaded portions of the two second bolts 21 and 21 are inserted into the through holes 26b and 26b at the other end of the intermediate bracket 26, respectively. Let it pass. Next, the second nut 33 is screwed into the second bolt 21, and the particulate filter 12 is attached to the other end of the intermediate bracket 26. After that, the flange 10a at the rear end of the exhaust pipe 10 and the inlet pipe 13 of the particulate filter 12 The flange 13 a is connected by the first bolt 14 and the first nut 16, and the particulate filter 12 is attached to the exhaust pipe 10.

In this case, since the particulate filter 12 is attached to the other end of the intermediate bracket 26 via the strips 17 and 18, the flange 10a at the rear end of the exhaust pipe 10 and the inlet pipe 13 of the particulate filter 12 are used. Even if there is a gap between the flanges 13a, or even if the flange 10a at the rear end of the exhaust pipe 10 and the flange 13a at the inlet pipe 13 of the particulate filter 12 slightly overlap, the strips 17 and 18 are loosened. As a result, the axial movement of the particulate filter 12 attached to the chassis frame 11 is possible, and the flange 10a at the rear end of the exhaust pipe 10 and the flange 13a at the inlet pipe 13 of the particulate filter 12 are securely in contact with each other. Thus, the filter 12 can be connected to the exhaust pipe 10.

That is, in the particulate filter mounting structure of the present invention, it is not necessary to remove the exhaust pipe 10 when the filter 12 is removed or attached. Therefore, it is possible to easily perform the process as compared with the conventional case in which the exhaust pipe needs to be removed from the chassis frame when the filter 12 is removed or attached. In addition, it is necessary to remove the elastic bodies 23 and 24 interposed between the mounting bracket 22 and the intermediate bracket 26 for the removal and installation. Therefore, damage to the elastic bodies 23 and 24 due to this removal and attachment can be avoided.

In this embodiment, the Bonoleto 21, 21 is passed through the through holes 26 b, 26 b with a downward force and the nut 33 is screwed into the particulate filter 12 at the other end of the intermediate bracket 26. Since the filter is attached, the movement associated with the removal or attachment of the filter 12 is in the vertical direction. As a result, although the filter 12 is relatively heavy at 15-30 kg, the removal or installation of the filter 12 can be further facilitated by supporting the filter 12 with, for example, a forklift. it can. In this embodiment, the steel plates 23d and 24d are vulcanized and bonded to the annular rubbers 23 and 24, which are elastic bodies. Even if shear forces are repeatedly applied to the bodies 23 and 24, the steel plates 23d and 24d vulcanized and bonded to the annular rubbers 23 and 24 receive the shearing forces, so that the stress is not concentrated, and the annular rubbers 23 and 24 are worn or cracked. Can be effectively prevented. In the above example, an annular rubber is shown as the elastic body. However, the elastic body is not limited to rubber, and other elastic materials may be used.

Brief Description of Drawings

FIG. 1 is a perspective view showing an attached state of a particulate filter of the present invention.

FIG. 2 is a perspective view corresponding to FIG. 1, showing a state where the particulate filter is lowered and removed.

FIG. 3 is a cross-sectional view taken along line AA in FIG.

Explanation of symbols

[0022] 10 Exhaust pipe

11 Chassis frame

12 Particulate filter

17, 18 strip

21 Bonore

22 Mounting bracket

23 Annular rubber (elastic body)

24 Annular rubber (elastic body)

26 Intermediate bracket

26b through hole

33 Nut

Claims

The scope of the claims

[1] In the particulate filter mounting structure in which the particulate filter (12) removably attached to the exhaust pipe (10) of the engine is attached to the chassis frame (11), a mounting bracket (22 ) One end of

One end of the intermediate bracket (26) is attached to the other end of the mounting bracket (22) via an elastic body (23, 24),

The particulate filter (12) is detachably attached to the other end of the intermediate bracket (26).

Particulate filter mounting structure characterized by the above.

[2] The particulate filter (12) is formed in a cylindrical shape having an axis coaxial with the exhaust pipe (10), and strips (17, 18) are provided around the particulate filter (12). The particulate filter mounting structure according to claim 1, wherein the particulate filter (12) is detachably attached to the other end of the intermediate bracket (26) via the strips (17, 18).