JP2015194052A - piping relay structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the enlargement of a box base in which a relay joint is accommodated while sufficiently securing a working space for connecting piping to the relay joint.SOLUTION: A plate-shaped fixed bracket 30 is accommodated in an accommodation space S of a box body 22. A maintenance hole 25 is opened at a left sidewall of the box body 22. A plurality of relay joints 35 are fixed to the fixed bracket 30. The relay joints 35 are arranged so that positions of the adjacent relay joints 35 are gradually shifted to a right oblique rear side from a vehicle front side toward a vehicle rear side when viewed from a plate face side of the fixed bracket 30. Such rows of the plurality of relay joints 35 are aligned in a plurality of rows with intervals in left and right directions of the fixed bracket 30.

Description

  The present invention relates to a pipe relay structure.

  2. Description of the Related Art Conventionally, in a work machine, the overall length of piping connecting an operation lever or the like in a cab and a pilot valve, or piping connecting a pilot valve and a work attachment is very long. Then, the structure which connected piping via a relay joint by dividing a piping in the middle and providing a relay joint in the division | segmentation location is known (for example, refer patent document 1, 2). A plurality of relay joints are arranged at intervals.

JP 2009-019397 A Japanese Utility Model Publication No. 06-071988

  By the way, in the inventions of Patent Documents 1 and 2, relay joints and piping are arranged along the outer surface of the work attachment, and when the relay joint is tightened with a tool such as a wrench around the relay joint. There is nothing to get in the way. Therefore, the space | interval of a relay joint can be enlarged and the work space for a fastening operation | work can fully be ensured.

  However, for example, when a relay joint and piping are stored in a housing having a storage space inside, there is a problem that a work space for tightening work cannot be secured sufficiently.

  Specifically, in order to avoid an increase in the size of the housing, it is necessary to reduce the interval between adjacent relay joints, but there is a problem that a sufficient gap for inserting a tool such as a wrench cannot be secured.

  Here, even when the interval between adjacent relay joints is small, a pipe can be connected to the relay joint by using a quick coupler or the like that can be connected with one touch, but this is not preferable because the number of parts and cost increase.

  The present invention has been made in view of such a point, and the object of the present invention is to increase the size of the housing in which the relay joint is accommodated while ensuring a sufficient work space for connecting the pipe to the relay joint. It is to suppress.

  The present invention includes a housing having a storage space inside and a maintenance hole formed on a side surface, a plate-shaped fixing bracket stored in the storage space of the housing, and a through-hole in the thickness direction of the fixing bracket And a plurality of relay joints that are fixed to the fixed bracket, and a pipe relay structure for connecting the pipes to each other by connecting the pipes to both ends of the relay joint. I took the right solution.

That is, in the first invention, the fixing bracket is disposed in the storage space so as to extend across the maintenance hole,
The plurality of relay joints are arranged so as to be spaced apart in the extending direction of the fixed bracket and so that the adjacent relay joints are shifted in the depth direction.

  In the first invention, the plurality of relay joints are arranged at intervals in the extending direction of the fixed bracket. Since the adjacent relay joints are shifted in the depth direction, the adjacent relay joints are disposed obliquely when viewed from the plate surface side. Thereby, it is possible to suppress an increase in the size of the casing in which the relay joint is accommodated while sufficiently securing a work space for connecting the pipe to the relay joint.

  Specifically, when tightening a relay joint by inserting a tool such as a wrench from the maintenance hole, considering the tightening angle of the tool, etc., the relay joint can be prevented from interfering with the adjacent relay joint. It is necessary to leave a gap of a predetermined distance a. Here, when relay joints are arranged in a line along the extending direction of the fixed bracket, the distance between adjacent relay joints when viewed from the maintenance hole is a.

  On the other hand, in the present invention, the adjacent relay joints are arranged obliquely when viewed from the plate surface side, so the adjacent relays when viewed from the maintenance hole while the distance between the adjacent relay joints is a. The distance between the joints can be b (b <a). Thereby, the work space required for performing the tightening work can be ensured while shortening the total length of the extending direction of the fixing bracket.

According to a second invention, in the first invention,
The plurality of relay joints are arranged such that adjacent relay joints gradually shift toward the depth side in the depth direction from one end side to the other end side in the extending direction of the fixed bracket. It is characterized by this.

  In the second invention, the adjacent relay joint is gradually shifted from the one end side to the other end side in the extending direction of the fixing bracket toward the back side in the depth direction. Thereby, the work space on the near side of the relay joint becomes wider toward the other end side in the extending direction of the fixing bracket.

According to a third invention, in the first or second invention,
The rows of the plurality of relay joints arranged at intervals in the extending direction of the fixed bracket are provided in a plurality of rows at intervals in the depth direction of the fixed bracket,
The height of the relay joint protruding from the plate surface of the fixed bracket is formed so as to increase from the front row in the depth direction toward the back row.

  In the third invention, a plurality of rows of relay joints are provided at intervals in the depth direction of the fixed bracket, and the height of the relay joint increases from the front row in the depth direction toward the back row. ing. As a result, when tightening the relay joints in the rear row, the tool does not interfere with the relay joints in the front row, and the work efficiency is improved.

According to a fourth invention, in the third invention,
The outer diameter of the relay joint is formed so as to increase from the front row in the depth direction toward the back row.

  In the fourth aspect of the invention, the outer diameter of the relay joint increases from the front row in the depth direction toward the rear row. Accordingly, it is possible to increase the height of the relay joint in the back row while ensuring the strength of the relay joint in the back row.

According to a fifth invention, in the first or second invention,
The rows of the plurality of relay joints arranged at intervals in the extending direction of the fixed bracket are provided in a plurality of rows at intervals in the depth direction of the fixed bracket,
The maintenance holes are respectively formed on both side surfaces in the depth direction of the housing,
The fixing bracket is disposed in the storage space in an inclined posture so that the height on the near side or the back side in the depth direction is lowered.

  In the fifth aspect, since the maintenance holes are formed on both side surfaces in the depth direction of the housing, the relay joint can be accessed from both side surfaces of the housing in the depth direction. The fixed bracket is inclined so that the height on the near side or the far side in the depth direction is low. Therefore, even when the heights of all the relay joints are made common, a step can be generated between the front row and the back row in the depth direction. Thereby, when the fastening operation | work of the relay joint of a back | inner side row | line | column is performed, a tool does not interfere with the relay joint of a near side row | line | column. In addition, the cost can be reduced by sharing the relay joint.

  According to the present invention, since the adjacent relay joints are shifted in the depth direction, the distance between the adjacent relay joints when viewed from the maintenance hole is set in a row along the extending direction of the fixed bracket. It can be shortened compared with the case where they are arranged side by side. Thereby, while ensuring the work space for connecting piping to a relay joint, the full length of the extension direction of a fixed bracket can be shortened, and the enlargement of a housing | casing can be suppressed.

It is a side view which shows the structure of the working machine which concerns on this embodiment. It is a side view when a fixed bracket and a relay joint are seen from a maintenance hole. It is a plane sectional view showing arrangement of a fixed bracket and a relay joint in the inside of a case. It is a back surface sectional view showing arrangement of a fixed bracket and a relay joint in the inside of a case. It is a rear view which shows the structure of the relay coupling which concerns on this modification 1. It is a back sectional view showing arrangement of a fixed bracket and a relay joint inside the case concerning this modification 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use. In each figure, the up / down and front / rear / left / right directions are indicated by arrows. Unless stated otherwise, the vertical direction will be described according to the directions indicated by these arrows.

  FIG. 1 is a side view showing the configuration of the work machine according to the present embodiment. As shown in FIG. 1, the work machine 10 is a dismantling machine including a crawler type lower traveling body 11 and an upper revolving body 12 that is turnably mounted on the lower traveling body 11.

  An engine room for accommodating an engine (not shown) or the like is provided on the rear side of the upper swing body 12 and is covered with an engine cover 15. An attachment 13 for performing a dismantling operation or the like is supported on the right side of the front part of the upper swing body 12 so as to be able to rise and fall. A heavy weight counterweight 16 is installed at the rear of the upper swing body 12 in order to maintain a front-rear balance with respect to the attachment 13 that operates.

  On the left side of the front part of the upper swing body 12, a cab 18 that is equipped with a driver's seat, various operation devices, and instruments and divides the operator's operation space is disposed. Here, the cab 18 can be moved up and down by the elevator device 20 so that the operator can visually recognize the loading platform of the truck when loading the dismantled waste generated by the dismantling work on the truck.

  The elevator apparatus 20 includes an elevator pedestal 21 on which the cab 18 is placed, a housing 22 standing on the rear side of the cab 18 and having a storage space S therein, and an elevator pedestal 21 provided on the front side of the housing 22. And an elevating mechanism (not shown).

  Here, in the work machine 10 having the elevator-type cab 18, the fixed cab 18 has a total length of the pipe 38 routed from an operation lever, a traveling pedal, or the like in the cab 18 by the movable range of the cab 18. It is longer than a work machine having Therefore, in consideration of routing workability, the pipe 38 is divided in the middle, and the relay joint 35 is provided at the divided portion. Hereinafter, a pipe relay structure for connecting the pipes 38 via the relay joint 35 will be described.

  As shown in FIGS. 2 and 3, the housing 22 is formed in a cylindrical shape extending in the vertical direction. The inside of the housing 22 is partitioned up and down by a partition plate 23. Reinforcing beams 24 extending in the vertical direction are joined to the four corners inside the housing 22, respectively.

  A maintenance hole 25 is opened in the left side wall of the housing 22. The maintenance hole 25 is opened so as to face the fixing bracket 30 and the relay joint 35 described later, and is used as a work hole for connecting the pipe 38 to the relay joint 35. The maintenance hole 25 is closed by an opening / closing lid 26 so as to be opened and closed (see FIG. 1).

  A plate-like fixing bracket 30 is accommodated in the storage space S of the housing 22. The fixed bracket 30 is disposed so as to extend in the horizontal direction so as to cross a substantially central position in the vertical direction of the maintenance hole 25 in the front-rear direction. Both front and rear end portions of the fixing bracket 30 are supported and fastened by fastening bolts 28 supported by support portions 27 projecting from the front and rear side walls of the housing 22 to the storage space S side.

  The fixing bracket 30 is formed with a plurality of mounting holes 31 penetrating in the plate thickness direction. A plurality of relay joints 35 are inserted through the plurality of attachment holes 31 so as to extend in the thickness direction. The relay joint 35 is fixed to the fixed bracket 30 by a fastening nut, welding, or the like.

  Pipes 38 are respectively connected to the upper and lower ends of the relay joint 35. Specifically, the pipe 38 is connected to the relay joint 35 by fastening the fastening portion 36 of the relay joint 35 with a tool 40 such as a wrench.

  Here, in this embodiment, when the distance between the adjacent relay joints 35 is set appropriately, the tool 40 is inserted from the maintenance hole 25 and the relay joint 35 is tightened. On the other hand, the overall length of the fixed bracket 30 is shortened while preventing the tool 40 from interfering. Hereinafter, this point will be described.

  Specifically, when the tightening operation of the relay joint 35 is performed by inserting the tool 40 from the maintenance hole 25, considering the tightening angle of the tool 40, the adjacent relay joint 35 is separated by a distance a [mm]. It is necessary to keep.

  Here, when the relay joints 35 are arranged in a line in the vehicle longitudinal direction, the distance between the adjacent relay joints 35 when viewed from the maintenance hole 25 is a [mm], and the total length of the fixed bracket 30 is It will be long.

  On the other hand, in the present embodiment, the plurality of relay joints 35 are spaced in the front-rear direction (extension direction) of the fixed bracket 30 and the adjacent relay joints 35 are shifted in the left-right direction (depth direction). It is arranged.

  Specifically, when viewed from the plate surface side of the fixed bracket 30, the position of the adjacent relay joint 35 is gradually shifted to the right and rearward from the vehicle front side to the vehicle rear side. A plurality of such rows of relay joints 35 are provided at intervals in the left-right direction of the fixed bracket 30 (three rows in the present embodiment). And according to arrangement | positioning of the relay coupling 35, the fixed bracket 30 is formed in the shape inclined and extended in the diagonally right back from the vehicle front side to the vehicle rear side.

  With such a configuration, the distance b [mm] between the adjacent relay joints 35 when viewed from the maintenance hole 25 is set to b <a while ensuring the distance a [mm] between the adjacent relay joints 35. It can be. Accordingly, it is possible to secure a work space necessary for performing the tightening operation of the fastening portion 36 by the tool 40 while shortening the overall length of the fixing bracket 30 in the front-rear direction and suppressing the housing 22 from becoming large. .

  As shown in FIG. 4, the height of the relay joint 35 protruding in the vertical direction from the plate surface of the fixed bracket 30 is formed so as to increase from the left column to the right column. That is, the height of the relay joint 35 on the side far from the maintenance hole 25 is high. Thereby, when the fastening operation | work of the right side relay joint 35 is performed, the tool 40 does not interfere with the left side relay joint 35, and work efficiency improves.

  Note that the number and arrangement of the relay joints 35 are merely examples, and the present invention is not limited to this form.

  A through hole is formed in the partition plate 23 of the housing 22. A cylindrical protective material 29 is fitted into the inner peripheral edge of the through hole. The pipe 38 connected to the upper part of the relay joint 35 is routed through the protective material 29.

  A through hole is formed at a position near the lower portion of the right side wall of the housing 22. A cylindrical protective material 29 is fitted into the inner peripheral edge of the through hole. The pipe 38 connected to the lower part of the relay joint 35 is routed through the protective material 29.

<< Modification 1 >>
FIG. 5 is a rear view showing the configuration of the relay joint according to the first modification. In the following, the same parts as those in the above embodiment are denoted by the same reference numerals, and only the differences will be described.

  As shown in FIG. 5, the plurality of relay joints 35 are disposed so as to be spaced apart in the front-rear direction of the fixed bracket 30 and adjacent relay joints 35 are shifted in the left-right direction. A plurality of such rows of relay joints 35 are provided at intervals in the left-right direction of the fixed bracket 30.

  The height of the relay joint 35 protruding in the vertical direction from the plate surface of the fixed bracket 30 is formed so as to increase from the left column to the right column. Furthermore, the outer diameter of the relay joint 35 is formed so as to increase from the left column to the right column.

  Accordingly, it is possible to increase the height of the relay joint 35 in the right row while ensuring the strength of the relay joint 35 in the right row. Further, when the tightening work of the relay joints 35 on the right row is performed, the tool 40 does not interfere with the relay joints 35 on the left row, and the work efficiency is improved.

<< Modification 2 >>
FIG. 6 is a rear cross-sectional view showing the arrangement of the fixing bracket and the relay joint inside the housing according to the second modification. As shown in FIG. 6, maintenance holes 25 are opened in the left side wall and the right side wall of the housing 22, respectively. That is, in the second modification, the relay joint 35 can be accessed from the left and right sides of the housing 22.

  The fixed bracket 30 is disposed in the storage space S in an inclined posture so that the height on the left edge side is lower than the height on the right edge side. A plurality of one type of joints 35 having the same height and outer diameter are fixed to the fixed bracket 30.

  As described above, even when the heights of all the relay joints 35 are made common, the portion of the relay joint 35 that protrudes above the fixed bracket 30 increases from the left column to the right column. There is a step so that the height is high. Further, in the portion of the relay joint 35 that protrudes to the lower side of the fixed bracket 30, a step is generated so that the height increases from the right column to the left column. Thereby, when the fastening operation | work of the relay joint 35 of the back | inner row is performed, the tool 40 does not interfere with the relay joint 35 of the front row. Further, the cost can be reduced due to the common use of the relay joint 35.

  Note that the fixing bracket 30 may be inclined so that the height on the right edge side is lower than the height on the left edge side.

  As described above, the present invention has a practicality of being able to suppress an increase in the size of the housing in which the relay joint is accommodated while sufficiently securing a work space for connecting the pipe to the relay joint. Since it is highly effective, it is extremely useful and has high industrial applicability.

22 Housing 25 Maintenance hole 30 Fixed bracket 35 Relay joint 38 Piping S Storage space

Claims (5)

A housing having a storage space inside and having a maintenance hole formed on a side surface thereof, a plate-shaped fixing bracket stored in the storage space of the housing, and extending through the thickness direction of the fixing bracket; A plurality of relay joints fixed to the fixing bracket, and a pipe relay structure for connecting the pipes to each other by connecting pipes to both ends of the relay joints,
The fixing bracket is disposed in the storage space so as to extend across the maintenance hole,
The pipe relay structure, wherein the plurality of relay joints are arranged so as to be spaced apart from each other in the extending direction of the fixed bracket and the adjacent relay joints shift in the depth direction. In claim 1,
The plurality of relay joints are arranged such that adjacent relay joints gradually shift toward the depth side in the depth direction from one end side to the other end side in the extending direction of the fixed bracket. A piping relay structure characterized by that. In claim 1 or 2,
The rows of the plurality of relay joints arranged at intervals in the extending direction of the fixed bracket are provided in a plurality of rows at intervals in the depth direction of the fixed bracket,
The height of the relay joint protruding from the plate surface of the fixed bracket is formed so as to increase from the front row in the depth direction toward the back row. In claim 3,
An outer diameter of the relay joint is formed so as to increase from the front row in the depth direction toward the back row. In claim 1 or 2,
The rows of the plurality of relay joints arranged at intervals in the extending direction of the fixed bracket are provided in a plurality of rows at intervals in the depth direction of the fixed bracket,
The maintenance holes are respectively formed on both side surfaces in the depth direction of the housing,
The pipe relay structure according to claim 1, wherein the fixing bracket is disposed in the storage space in an inclined posture so that a height on a near side or a depth side in a depth direction is lowered.

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