JP3084366U - Pipe through hole shielding device - Google Patents

Abstract

(57) [Problem] To provide a pipe through-hole shielding device for closing a gap between an exhaust pipe and a pipe through-hole. SOLUTION: A pipe through-hole shielding device 30 is provided in a pipe through-hole 17 formed through a hood 14a.
6 is attached to the side surface of the hood 14a so as to cover the pipe through hole 17 in a state where it is inserted. The device 30 includes a support portion 32 that is attached to the side surface of the hood 14a.
And a skirt portion 33 that forms a portion facing the pipe through hole 17 inside the support portion 32, has flexibility, and has a plurality of cuts extending radially from the center.
It is composed of When the exhaust pipe 16 is inserted by pushing and expanding the skirt portion 33, the gap between the inner circumference of the pipe through hole 17 and the outer circumference of the exhaust pipe 16 can be closed by the skirt portion 33 which is separated and expanded at the cut.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a pipe such as an engine exhaust pipe and a pipe-through shielding device configured to shield a through hole therethrough.

[0002]

[Prior art]

 An aerial vehicle equipped with a boom that can be extended, retracted, swiveled, and swiveled on the vehicle body, and a work platform on which a worker can mount is installed at the end of the boom, is generally provided with an engine room inside the vehicle body. The engine is located in the engine room. When the engine is installed in the engine room in this way, it is necessary to discharge the exhaust from the engine to the outside of the engine room. For this reason, an exhaust pipe extending from the engine is disposed so as to pass through a pipe through hole formed in a hood constituting an engine room, so that exhaust gas can be discharged outside the vehicle. At this time, between the exhaust pipe and the pipe through hole, it is possible to prevent the exhaust pipe and the vehicle body from being damaged by the vibration of the engine, and to insert and remove the exhaust pipe to change the size of the exhaust pipe, etc. Therefore, a gap is provided. In addition, since the exhaust pipe outlet is provided on the upper surface of the hood toward the outer surface, an exhaust pipe is provided at the upper end of the pipe passage hole to prevent rainwater from directly entering the exhaust pipe outlet and affecting the engine. There is a pipe-shaped exhaust cover that is bent in the shape of a “ku” that covers the upper part of the outlet.

[0003]

[Problems to be solved by the invention]

 However, in such a configuration, since the exhaust cover is bent in the shape of the letter “く”, the exhaust of the engine discharged from the exhaust pipe is likely to be trapped in the exhaust cover, and the trapped exhaust is discharged into the exhaust pipe. There is a problem that the engine room is contaminated by entering the engine room through the gap between the hole and the pipe passage hole. Furthermore, in the engine room, since the air in the engine room is blown to the radiator by the fan driven by the engine and is discharged to the outside, the exhaust gas trapped in the exhaust cover is connected to the exhaust pipe. There was a problem that the gas was sucked into the engine room through the gap between the pipe and the hole.

[0004] The present invention has been made in view of the above-described problems. In order to prevent exhaust from the engine from entering the engine room and contaminating the engine room and the radiator, a pipe (exhaust pipe) and a pipe (exhaust pipe) are provided. An object of the present invention is to provide a pipe through-hole shielding device that shields a gap with a through-hole.

[0005]

[Means for Solving the Problems]

 In order to solve the above problem, in the present invention, a pipe (for example, the exhaust pipe 16) is inserted into a pipe through hole formed through a wall member (for example, the hood 14a in the embodiment). A pipe through-hole shielding device attached to the side surface of the wall member to cover the pipe through hole to close the gap between the inner periphery and the outer periphery of the pipe is provided with a support portion attached to the side surface of the wall member and a support portion attached to the side surface of the wall member. A skirt portion having a portion facing the pipe through-hole on the inside, having flexibility and having a plurality of cuts extending radially from the center.

According to such a configuration, when the pipe is inserted by pushing and expanding the skirt portion, the gap between the inner periphery of the pipe through hole and the outer periphery of the pipe is formed by the skirt portion which is divided and expanded at the cut. Can be closed.

[0007] It is also possible to form a pipe through-hole shielding device by stacking two skirt portions formed at equal intervals on the circumference of the skirt portion and shifted by a half pitch. . This makes it possible to more appropriately close the gap between the inner periphery of the pipe through hole and the outer periphery of the pipe.

[0008]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view of a wheel-type self-propelled aerial work vehicle (hereinafter referred to as "aerial work vehicle") provided with a pipe through-hole shielding device according to the present invention, and the configuration thereof will be described. I do. The aerial work vehicle 1 has a swivel 4 configured to be rotatable in a horizontal direction with respect to the vehicle body 3 by operating a swivel motor 11 on a vehicle body 3 configured to be able to travel by a travel motor (not shown). A boom 5 that is configured to be able to move up and down with respect to the vehicle body 3 by the expansion and contraction operation of an up-and-down cylinder 12 is pivotally attached to the upper end of the swivel base 4.

The boom 5 is composed of a base boom 5a, an intermediate boom 5b, and a distal boom 5c pivotally mounted on the swivel 4 and is telescopically inserted into the telescopic cylinder 13 and disposed inside the boom. It is configured to be extendable and retractable by the action of a telescopic wire (both not shown) wound around a wire sheave that moves with the telescopic operation of the telescopic cylinder 13 and the telescopic operation of the telescopic cylinder 13. A vertical post 6 is provided at the tip of the boom 5 to maintain a vertical position at all times regardless of the elevation angle of the boom 5 by operating a leveling cylinder (not shown). Work table 8 is attached.

An operating device 10 for operating the vehicle and operating the boom 5 is provided on the work table 8, and an operator who rides on the work table 8 operates the operation device 10. Accordingly, the hydraulic actuators such as the traveling motor, the swing motor 11, the up-and-down cylinder 12, the telescopic cylinder 13 and the like are operated to move the aerial work vehicle 1 to the target site position, and the boom 5 swings. The work table 8 is moved to an arbitrary height by raising and lowering, expanding and contracting, etc. to perform a desired work at a high place.

As shown in FIG. 2, an engine room 14 is formed inside the swivel 4 of the aerial work vehicle 1 and is surrounded by a hood 14 a. An engine 15 having a 15a and a radiator 19 are provided. A radiator grill 19 a is provided on the outer surface of the swivel 4 so as to cover the front of the radiator 19.

The engine 15 has an exhaust pipe 16. The exhaust pipe 16 passes through a pipe through hole 17 formed in a hood 14 a constituting an engine room 14, and an outlet 16 a of the exhaust pipe 16 connects the engine room 14. The upper portion of the hood 14a is provided to face the outer surface. At the upper end of the pipe through hole 17 is provided a pipe-shaped exhaust cover 18 that is bent in a “<” shape and covers the upper part of the outlet 16 a of the exhaust pipe 16, and is in contact with the upper end of the pipe through hole 17. On the other side, an opening 18a is formed. There is a gap between the exhaust pipe 16 and the pipe through hole 17, and a pipe through hole shielding device 30 is provided so as to block this gap.

As shown in FIGS. 3A and 3B, the pipe through-hole shielding device 30 includes a rectangular plate-shaped support portion 32 and a disk-shaped skirt portion 33, and is made of silicon or silicon. It is made of heat-resistant rubber such as fluoro rubber. The support portion 32 is fixed to the surface of the engine room by bolts or the like using bolt mounting holes 31a to 31d. The skirt portion 33 corresponds to a portion facing the pipe through hole 17 (shown in FIG. 2) inside the support portion 32, is configured integrally with the support portion 32, has flexibility, and has a radial shape from the center. Are formed with a plurality of cuts (for example, eight), and a circular hole 34 is formed in the center.

FIG. 2 shows a first embodiment. A pipe through-hole shielding device 30 is overlapped on the outer surface of the hood 14a so that the skirt portion 33 and the pipe through-hole 17 coincide with each other. On this, the exhaust cover 18 is aligned with the support portion 32 and the flange portion 18b of the exhaust cover 18. And fixed by fastening means such as bolts 20. Here, the flange portion 18b of the exhaust cover 18 functions as a reinforcing plate.

According to the pipe through-hole shielding device 30 of the present invention configured as described above, as shown in FIG. 2, when the exhaust pipe 16 pushes and expands the skirt portion, it is divided at the cut. The expanded skirt portion can close the gap between the outer circumference of the exhaust pipe 16 and the inner circumference of the pipe through hole 17, so that the exhaust air trapped in the exhaust cover 18 is removed by the exhaust pipe 16 and the pipe through hole 17. It is possible to prevent the engine room 14 from being polluted by entering from a gap provided between the engine rooms. In addition, it is possible to prevent the air in the engine room 14 from being blown by the fan 15a driven by the engine 15 and to prevent the radiator 19 from being stained.

Further, as a pipe through-hole shielding device according to a second embodiment of the present invention, a pipe through-hole shielding device 30 having cuts formed at equal intervals on the circumference of the skirt portion 33 shown in FIG. And a pipe through-hole shielding device 40 (see FIG. 4) having a skirt portion 43 formed by shifting the cut pitch of the skirt portion 33 of FIG. 3 by half. The hole shielding device 50 is shown in FIGS. 5 (A) and 5 (B). By using two pipe through-hole shielding devices 30 and 40 having skirt portions 33 and 43 having different cut pitches in this manner, the skirt portion and the exhaust pipe are brought into closer contact with each other. Shielding effect that closes the gap between the exhaust pipe and the outer circumference of the exhaust pipe. FIG. 6 shows an example in which the pipe through-hole shielding device 50 is used.

FIG. 7 shows a third embodiment, in which an exhaust hood 18 is placed on the outer surface of the hood 14a, and a skirt portion and a pipe through hole 17 are provided between the inner surface of the hood 14a and the reinforcing plate 35. In this configuration, the pipe through-hole shielding device 50 is attached so that the values match. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As described above, by arranging the reinforcing plate 35 formed of a rigid iron plate or the like so as to overlap with the supporting portion of the pipe through-hole shielding device 50, the hood 14 a constituting the engine room 14 is provided. Since the support portion can be more firmly fixed, the influence of vibration of the engine 15 and the like and the insertion / removal of the exhaust pipe 16 is small, and the durability can be improved. The reinforcing plate 35 and the support portion of the pipe through-hole shielding device 50 may be joined. Further, instead of the pipe through-hole shielding device 50, the pipe through-hole shielding device 30 of the first embodiment may be used.

[0019]

[Effect of the invention]

 As described above, in the present invention, the gap between the inner circumference of the pipe through hole and the outer circumference of the pipe is closed in a state where the pipe is inserted into the pipe through hole formed through the wall member. The support part is attached to the side surface so as to cover the pipe through-hole, and is joined to and attached to the side surface of the wall member. The flexible skirt part forms a portion facing the pipe through-hole inside the support part. The skirt portion has a plurality of cuts extending radially from the center. For this reason, when the pipe is inserted by pushing and expanding the skirt portion, the gap between the inner periphery of the pipe through hole and the outer periphery of the pipe can be closed by the skirt portion which is divided and expanded at the cut. A hole shielding device can be provided.

In addition, a pipe through-hole shielding device may be formed by stacking two skirt portions formed by shifting the cuts formed at equal intervals on the circumference of the skirt portion by half the pitch. . With this configuration, the gap between the inner periphery of the pipe through hole and the outer periphery of the pipe can be more appropriately closed.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of an aerial work vehicle equipped with the pipe through-hole shielding device.

FIG. 2 is an explanatory view showing a preferred embodiment of the pipe through-hole shielding device according to the present invention.

FIG. 3 is a plan view showing a configuration of the pipe through-hole shielding device.

FIG. 4 is an explanatory view for the pipe through-hole shield having a skirt portion in which the pitch of the cut in FIG. 3 is shifted by a half.

FIG. 5 is an explanatory view of the pipe through-hole shielding device of the present invention having a skirt portion in which the skirt portions of FIGS. 3 and 4 are overlapped.

FIG. 6 is an explanatory view showing an embodiment in which two pipe through-hole shielding devices according to the present invention are stacked.

FIG. 7 is an explanatory view showing an embodiment in which two pipe through-hole shielding devices according to the present invention and a reinforcing material are stacked.

[Explanation of symbols]

 14a Hood (wall member) 16 Exhaust pipe (pipe) 17 Pipe through hole 25 Cut 30, 40, 50 Pipe through hole shielding device 32, 42 Support portion 33, 43 Skirt portion 35 Reinforcing material

Claims (2)

[Utility model registration claims] 1. A side wall of the wall member for closing a gap between an inner periphery of the pipe through hole and an outer periphery of the pipe in a state where the pipe is inserted into a pipe through hole formed through the wall member. What is claimed is: 1. A pipe through-hole shielding device attached to cover a through-hole, comprising: a support portion joined to and attached to a side surface of the wall member; and a flexible portion inside the support portion, the portion facing the pipe through-hole. A plurality of cuts extending radially from the center are formed in the skirt, and when the pipe is inserted by pushing and expanding the skirt, the pipe splits and expands at the cuts A pipe through-hole shielding device, wherein a gap between an inner periphery of the pipe through-hole and an outer periphery of the pipe is closed by the formed skirt portion. 2. The method according to claim 1, wherein the cuts are formed at equal intervals on the circumference of the skirt, and the two skirts formed by shifting the pitch of the cut by half are overlapped. The pipe through-hole shielding device according to claim 1, wherein: