JP6510395B2 - Construction machinery - Google Patents

Description

  The present invention relates to a construction machine in which an intake pipe connecting an engine and an air cleaner is mounted through a partition cover defining an engine chamber.

  The prior art of this kind is disclosed in Patent Document 1. In Patent Document 1, an air cleaner has a through hole formed in a partition plate that defines an engine chamber in which an engine is accommodated, one end of which is connected to the engine and the other end of which is disposed outside the engine chamber. A hydraulic shovel is disclosed which is connected to an intake pipe for introducing fresh air to the engine.

JP, 2009-74243, A

  As disclosed in Patent Document 1, the intake pipe is inserted into a through hole provided in a partition plate (partition cover) and connected to an engine. At this time, for example, a partition wall made of, for example, a urethane resin is provided to prevent a drop in the operating efficiency of the engine due to the warm air leaking out from the engine chamber side entering the air cleaner side through the through hole. There is a technology that prevents warm-up leaks.

  However, since such a urethane resin is inferior in strength to a cover made of iron material, the sealing performance is impaired due to an unexpected damage or deterioration with age of the partition wall caused by the urethane resin during maintenance work of the vehicle body. As a result, warm air may intrude into the air cleaner.

  In order to solve the above-mentioned subject, the object of the present invention is to provide the construction machine which can attach air intake piping to a partition cover which constitutes an engine room, without generating a crevice over time.

In order to solve the above problems, a construction machine according to the present invention comprises a main body, an engine room which houses an engine and is provided inside the main body, a partition cover which defines the engine room, and an external part of the engine room In a construction machine provided with an air cleaner disposed, wherein one end is connected to the engine and an intake pipe whose other end is connected to the air cleaner is inserted through the partition cover and attached, the intake pipe is the partition cover A first pipe connected to the pipe and the engine, and a second pipe connected to the pipe and the air cleaner, and the pipe and the outer periphery of the pipe A relay member fastened to the partition cover is formed by three members of the first plate member and the second plate member respectively held, and the first plate member Has a cutout portion of the first arcuate closely with part of the outer periphery of said pipe, said second plate member, the outer periphery except the portion where the cutout portion of the first arc-shaped closely among the pipe has a notch of the second arcuate closely with, the when the first plate member superposed said second plate member, the cutout portion of the cutout portion and the second circular arc shape of the first arc-shaped And one circular hole through which the pipe is inserted is formed , and the relay member is fastened to the partition cover by a fastener.

  In the construction machine according to the present invention, a pipe is formed by bringing a pipe into close contact with one circular hole formed by the first arc shape of the first plate member and the second arc shape of the second plate member. On the partition cover defining the engine compartment by fastening the relay member consisting of the three members of the first plate member and the second plate member held by the two to the partition cover defining the engine compartment by the fastener. Intake piping consisting of a pipe, a first pipe, and a second pipe can be attached without any gap. As a result, the present invention can ensure higher sealing performance of the engine compartment than conventional.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the hydraulic shovel which comprises one Embodiment of the construction machine which concerns on this invention. It is a perspective view which shows this embodiment provided in the hydraulic shovel shown in FIG. It is a principal part expansion perspective view of FIG. It is a principal part expansion perspective view of FIG. It is the front view shown except the bolt from the state of FIG. It is a perspective view which shows the state which remove | eliminated the volt | bolt, the 1st rubber hose, and the 2nd rubber hose from the state of FIG. It is a side view of FIG. It is a perspective view which shows the pipe with which this embodiment is equipped. It is a front view which shows the state which remove | eliminated the closing plate from the state of FIG. It is a front view which shows the base board with which this embodiment is equipped. It is a front view showing a closing plate provided in this embodiment. It is a front view which shows the partition cover which comprises the engine compartment shown in FIG.

  Hereinafter, an embodiment of a construction machine according to the present invention will be described based on the drawings.

  As shown in FIG. 1, one embodiment of the construction machine according to the present invention is, for example, a hydraulic shovel. This hydraulic shovel is disposed on a traveling body 1, the traveling body 1, a swing body 2 constituting a main body, a boom 3 a, an arm 3 b, and a boom 3 a rotatably attached to the swing body 2. It includes a bucket 3 c and is provided with a working device 3 for excavating earth and sand.

  A driver's cab 4 is provided at a front position of the revolving unit 2, a counterweight 5 is provided at a rear position, and an engine room 6 and the like are disposed between the driver's cab 4 and the counterweight 5.

  As shown in FIGS. 2 to 5, in the present embodiment provided in the hydraulic shovel shown in FIG. 1, one end is connected to the not-shown engine housed in the engine chamber 6 and the other end is installed outside the engine chamber 6 The intake pipe 10 connected to the air cleaner 7 is attached by inserting the partition cover 11 defining the engine chamber 6.

  The intake pipe 10 is for guiding fresh air purified by the air cleaner 7 to an engine (not shown), and a first pipe 13 connected to the partition cover 11 and the pipe 13 are connected to the engine (not shown). It comprises a pipe, for example, a first rubber hose 14, and a second pipe for connecting the pipe 13 and the air cleaner 7, for example, a second rubber hose 15.

  A relay member to be fastened to the partition cover 11 as shown in FIG. 6 is formed by three members of the pipe 13 and a first plate member such as the base plate 20 holding the pipe 13 and a second plate member such as the closing plate 21. It is done.

  As shown in FIGS. 7 and 8, the pipe 13 is made of a metal member, and has a first retaining portion, eg, a first annular projection 13a, on one end side to prevent the first rubber hose 14 from coming off the pipe 13. On the other end side, there is provided a second retaining portion, for example, a second annular projection 13 b for preventing the second rubber hose 15 from being separated from the pipe 13.

  The first annular projection 13a and the second annular projection 13b of the pipe 13 are formed by bulge processing, for example, before being made a relay member together with the base plate 20 and the closing plate 21.

  As shown in FIG. 4, in the present embodiment, a first clamp 23a comprising a fastening band for gripping the pipe 13 and the first rubber hose, and a second clamp comprising a fastening band for gripping the pipe 13 and the second rubber hose 15 It has 23b.

  As shown in FIGS. 6, 9 and 10, the base plate 20 is made of iron material and corresponds to a half of a circle formed by the outer periphery of the pipe 13. have. Further, the base plate 20 has a closed space portion 20a formed in, for example, an angular shape which enables insertion of the pipe 13 having the first annular protrusion 13a and the second annular protrusion 13b, and the first arc shape 20b described above It is continuously provided in the space portion 20a. Further, the base plate 20 is held by the pipe 13 by a weld formed between one half of the outer periphery of the pipe 13 corresponding to the first arc shape 20 b and the first arc shape 20 b of the base plate 20. There is.

  As shown in FIGS. 6 and 11, the closing plate 21 is also made of an iron material, and in cooperation with the first arc shape 20b of the base plate 20, forms one circular hole through which the pipe 13 is inserted. It has the 2nd circular arc shape 21a by which the part was opened.

  The closing plate 21 has a shape capable of closing the closed space portion 20 a of the base plate 20 in a state in which the base plate 20 is welded to the pipe 13. Further, the closing plate 21 is held by the pipe 13 by a weld formed between the other half circumference corresponding to the second arc shape 21 a of the pipe 13 and the second arc shape 21 a of the closing plate 21. . Further, for example, the periphery of the closing plate 21 other than the second arc shape 21 a is fixed to the base plate 20 by a welded portion formed by welding.

  The pipe 13 is disposed, for example, so that the extension direction is orthogonal to the surface of the base plate 20 and the surface of the closing plate 21.

  Further, the present embodiment is provided with a fastener for fastening the relay member consisting of the three members of the pipe 13, the base plate 20 and the closing plate 21 to the above-described partition cover 11 which defines the engine chamber 6.

  As shown in FIG. 12, the partition cover 11 has a notch 11 a through which the pipe 13 formed in a shape smaller than the shape of the base plate 20 is inserted.

  The above-mentioned fastener consists of what fastens the base board 20 in the state contact | abutted to the partition cover 11. As shown in FIG. For example, the fastener may be a bolt 22 shown in FIG. 6 formed in the base plate 20 and a bolt 22 shown in FIG. 4 inserted in the bolt hole 11b formed in the partition cover 11 shown in FIG. A nut (not shown) for fastening the mating base plate 20 to the partition cover 11 is included.

  In a state in which the base plate 20 is attached to the partition cover 11 by the bolts 22, the pipe 13 is disposed such that the extension direction is orthogonal to the surface portion of the partition cover 11.

  When the intake pipe 10 is attached to the partition cover 11 defining the engine chamber 6, a relay member consisting of three members of the pipe 13, the base plate 20 and the closing plate 21 is manufactured in advance as follows.

  For example, the pipe 13 having the first annular projection 13a and the second annular projection 13b formed by bulge processing is inserted into the closed space 20a of the base plate 20, and the pipe 13 is formed into the first arc shape 20b of the base plate 20. The outer periphery of the axially central portion of the pipe 13 is brought into close contact with the first arc shape 20 b of the base plate 20 by relatively moving in the direction.

  In this state, the pipe 13 and the base plate 20 are fixed by welding the first arc shape 20b portion of the base plate 20 and one half circumference of the outer periphery of the pipe corresponding to the first arc shape 20b.

  Next, the second arc shape 21 a of the closing plate 21 is brought into close contact with the pipe 13 by bringing the closing plate 21 into contact with the base plate 20. Thereby, the closed space portion 20 a of the base plate 20 is closed by the closing plate 21.

  In this state, the second arc shape 21a portion of the closing plate 21 and the other half of the outer periphery of the pipe 13 are welded to fix the pipe 13 and the closing plate 21. Further, the periphery of the closing plate 21 other than the second arc-shaped portion 20 b is welded to the base plate 20.

  Thus, the relay member consisting of the three members of the pipe 13, the base plate 20 and the closing plate 21 is manufactured.

  The first rubber hose 14 and the second rubber hose 15 are wired using this relay member. In this case, first, the pipe 13 is inserted into the notch 11a of the partition cover 11, and the base plate 20 included in the relay member is brought into contact with the partition cover 11, and the bolt holes 20c of the base plate 20 and the partition cover 11 are made. The bolt 22 is inserted into the bolt hole 11b, and a nut (not shown) is screwed into the bolt 22 to fasten the base plate 20 to the partition cover 11. Thus, the relay member composed of the pipe 13, the base plate 20 and the closing plate 21 is attached to the partition cover 11 defining the engine chamber 6.

  In this state, the first rubber hose 14 connected to the engine (not shown) disposed in the engine compartment 6 is connected to the end of the pipe 13 located inside the engine compartment 6, and the partition cover 11 and the first annular ring of the pipe 13 The portion of the first rubber hose 14 located between the projection 13a and the projection 13a is fastened by the first clamp 23a.

  Further, the second rubber hose 15 connected to the air cleaner 7 disposed outside the engine chamber 6 is connected to the end of the pipe 13 located outside the engine chamber 6, and the closing plate 21 and the second annular projection 13 b of the pipe 13 And a portion of the second rubber hose 15 positioned between the two and the second clamp 23b.

  In this manner, the intake pipe 10 composed of the pipe 13, the first rubber hose 14 and the second rubber hose 15 can be attached to the partition cover 11 defining the engine compartment 6.

  As described above, in the hydraulic shovel according to the present embodiment, the pipe 13 is brought into close contact with one circular hole formed by the first arc shape 20b of the base plate 20 and the second arc shape 21a of the closing plate 21. The relay member consisting of three members of the pipe 13 and the base plate 20 and the closing plate 21 by which the pipe 13 is held by welding is fastened to the partition cover 11 defining the engine compartment 6 by the bolt 22 Thus, the intake pipe 10 including the pipe 13 and the first rubber hose 14 and the second rubber hose 15 can be attached to the partition cover 11 without generating a gap over time. Therefore, the present embodiment does not require the seal material for preventing the gap, does not need to be adversely affected by the deterioration of the seal material, and the sealing performance with high accuracy of the engine chamber 6 can be secured.

  Further, in the present embodiment, when the intake pipe 10 is attached to the partition cover 11, the relay member constituting one member including the pipe 13 included in the intake pipe 10, the base plate 20, and the closing plate 21 is the partition cover 11 Since it is sufficient to connect the first rubber hose 14 and the second rubber hose 15 to the pipe 13 after fastening it to the pipe 13, attachment of the intake pipe 10 to the partition cover 11 can be easily performed.

  As described above, in the present embodiment, the base plate 20 and the closing plate 21 are welded to the pipe 13 having the first annular protrusion 13a and the second annular protrusion 13b previously formed by bulge processing, and then fastened to the partition cover 11 The relay member is manufactured.

  After manufacturing a relay member consisting of the base plate 20 and the closing plate 21 using a pipe on which the first annular projection 13a and the second annular projection 13b are not formed temporarily, the pipe 13 is bulged to form a first annular projection. If it is going to form 13a and the 2nd annular projection 13b, when performing bulge processing, base plate 20 and closing plate 21 will become an obstacle, and there is a possibility that it may become impossible to form desired 1st annular projection 13a and 2nd annular projection 13b. is there.

  In the present embodiment, the first annular protrusion 13a and the second annular protrusion 13b for preventing the first rubber hose 14 and the second rubber hose 15 from being removed by bulge processing on the pipe 13 in which the relay member is formed in advance before manufacturing the relay member. Since the first rubber hose 14 and the second rubber hose 15 can be firmly connected to the pipe 13 without causing the above-mentioned fear, a highly reliable hydraulic shovel can be realized.

  Further, in the present embodiment, since the base plate 20 and the closing plate 21 are welded to the outer periphery of one pipe 13 without dividing the pipe, the relay member is manufactured without the welding spatter getting inside the pipe 13 can do. Thereby, high quality of the intake pipe 10 can be maintained.

  Further, in the present embodiment, the intake pipe 10 is configured to include the first rubber hose 14 and the second rubber hose 15, but conventionally, the manufacturing cost of the rubber hose can be reduced compared to the manufacturing cost of the synthetic resin pipe. Are known. Along with this, this embodiment can suppress the manufacturing cost.

  In the present embodiment, other equipment when arranging the first rubber hose inside the engine room 6, restrictions due to the arrangement of equipment, and when arranging the second rubber hose 15 outside the engine room 6. Taking into consideration the restriction due to the arrangement of other equipment and devices, the pipe 13 is made at an angle different from 90 degrees to the surface of the partition cover 11, that is, the extension direction is not orthogonal to the surface of the partition cover 11. When the pipe 13 is desired to be installed, when welding the pipe 13 with the base plate 20 and the closing plate 21, the pipe 13 can be easily welded in an inclined state. That is, in the present embodiment, the intake pipe 10 can be easily arranged in an optimal arrangement space in accordance with the arrangement of equipment and devices around the engine room 6.

  In the embodiment described above, the first plate member forming the relay member together with the pipe 13 is constituted by the base plate 20 having the closed space portion 20a and the first arc shape 20b, and the second plate member is the base plate 20. The first plate member and the second plate according to the present invention have a second arc shape 21a and are formed by a closing plate 21 formed in a shape closing the closed space portion 20a of the base plate 20. The members are not limited to this configuration.

  For example, the first plate member is constituted by a first divided plate having a first arc shape and being held by the pipe 13 by welding in one half circumference corresponding to the above-described first arc shape of the outer circumference of the pipe 13; The second plate member is joined to the side end of the first divided plate, has a second arc shape, and is held by the pipe 13 by welding on the other half of the outer periphery of the pipe 13 corresponding to the aforementioned second arc shape. You may comprise by the 2nd divided board made to let it do.

  In this case, the shapes of the first divided plate and the second divided plate are set such that the overall shape of the first divided plate and the second divided plate is larger than the notch 11a of the partition cover 11. .

  In this configuration, the relay member to be fastened to the partition cover 11 is formed by the three members of the pipe 13, the first dividing plate, and the second dividing plate. Moreover, the fastener which fastens this relay member to the partition cover 11 shall be able to fasten both the 1st division board and the 2nd division board to the division cover 11. As shown in FIG.

  Since the above-described one does not require the sealing material for closing the gap, the intake pipe 10 can be attached to the partition cover 11 defining the engine chamber 6 without being adversely affected by the sealing material. Similar to the embodiment, high precision adhesion of the engine compartment 6 can be secured.

2 Swing body (body)
DESCRIPTION OF SYMBOLS 3 Work apparatus 6 Engine room 7 Air cleaner 10 Intake piping 11 Partition cover 11a Notch part 11b Bolt hole 13 Pipe 13a 1st annular projection (1st drop prevention part)
13b Second annular projection (second retaining part)
14 1st rubber hose (1st piping)
15 Second rubber hose (second piping)
20 Base plate (first plate member)
20a closed space 20b first arc shape 20c bolt hole 21 closing plate (second plate member)
21a 2nd arc shape 22 bolt (fastener)
23a first clamp 23b second clamp

Claims (6)

A main body, an engine chamber accommodating the engine and provided inside the main body, a partition cover defining the engine chamber, and an air cleaner disposed outside the engine chamber, one end of which is connected to the engine In a construction machine in which an intake pipe whose other end is connected to the air cleaner is inserted and attached to the partition cover,
The intake pipe comprises a single pipe inserted into the partition cover, a first pipe connected to the pipe and the engine, and a second pipe connected to the pipe and the air cleaner.
A relay member fastened to the partition cover is formed by three members of the pipe and a first plate member and a second plate member respectively held on the outer periphery of the pipe,
It said first plate member has a cutout portion of the first arcuate closely with part of the outer periphery of said pipe, said second plate member, the cutout portion of the first arcuate of the pipe has a notch of the second arcuate closely with the outer periphery except the portion for close contact, when superimposing the second plate member and the first plate member, the cutout portion and the second of said first arcuate The circular arc-shaped notched portion forms a single circular hole through which the pipe is inserted ,
The construction machine is characterized in that the relay member is fastened to the partition cover by a fastener. In the construction machine according to claim 1,
The first plate member is held on the pipe by a weld formed between one half of the outer periphery of the pipe corresponding to the first arc shape and the first arc shape of the first plate member. ,
That the second plate member is held by the pipe by a weld formed between the other half circumference of the pipe corresponding to the second arc shape and the second arc portion of the second plate member Construction machines characterized by In the construction machine according to claim 2,
The first plate member includes a closed space portion formed in a shape that allows insertion of the pipe, and a base plate having the first arc shape connected to the closed space portion.
The second plate member is in contact with the base plate, has a second arc shape, and includes a closing plate set to a shape capable of closing the closed space portion of the base plate.
The relay member is formed by three members of the pipe, the base plate and the closing plate,
The partition cover is formed in a shape smaller than the shape of the base plate, and has a notch through which the pipe passes.
The construction machine according to claim 1, wherein the fastener comprises fastening the base plate to the partition cover. In the construction machine according to claim 3,
The first pipe comprises a first rubber hose,
The second piping comprises a second rubber hose,
The pipe has a first retaining portion for preventing the first rubber hose from being separated from the pipe, and a second retaining portion for preventing the second rubber hose from being separated from the pipe.
A construction machine comprising: a first clamp for gripping the pipe and the first rubber hose; and a second clamp for gripping the pipe and the second rubber hose. In the construction machine according to claim 4,
The fastener includes a bolt hole formed in the base plate, a bolt inserted in a bolt hole formed in the partition cover, and a nut screwed to the bolt to fasten the base plate to the partition cover. Construction equipment to feature. In the construction machine according to claim 1,
The first plate member comprises a first divided plate having the first arc shape,
The second plate member is formed of a second divided plate having a second arc shape, in which the first divided plate and the side end portion are joined.
The relay member is formed by three members of the pipe, the first divided plate, and the second divided plate.
The partition cover is formed in a smaller shape than the overall shape of the first divided plate and the second divided plate, and has a cutout into which the pipe is inserted.
The construction machine according to claim 1, wherein the fastener is configured to fasten the first divided plate and the second divided plate to the partition cover.