Abstract:
Provided is a device for fixing hydraulic piping to prevent the hydraulic piping from sliding down even when the bolt for coupling a clamp which fixes the hydraulic piping is loosened by the vibration generated during operation. The device for fixing the hydraulic piping of construction equipment includes: a piping sheet fixed to a boom structure; upper and lower clamps constituted by a fixed part fixed to the piping sheet and a concave groove for supporting the hydraulic piping; a coupling member for fixing the fixed part to the piping sheet; a hydraulic pipe fixing plate mounted on the piping sheet; a connecting hole for connecting a main pipe, which is connected to a main control valve mounted on an upper rotating body, to the hydraulic pipe disposed on the boom structure; and a bolt and nut for fixing the connecting hole to the hydraulic pipe fixing plate.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a hydraulic piping fixing device for a construction machine. More particularly, the present invention relates to a hydraulic piping fixing device for a construction machine, in which even when bolts that fasten the clamps for securely fixing the hydraulic piping (e.g., hydraulic piping for an arm cylinder) to the upper plate of the boom structure is loosened due to vibration occurring during the work (e.g., quarry work, breaker work or the like), the hydraulic piping can be prevented for drooping. 
       BACKGROUND OF THE INVENTION 
       [0002]    A conventional hydraulic piping fixing device for a construction machine in accordance with the prior art shown in  FIG. 1  includes: 
         [0003]    a piping seat  2  weldingly fixed to an upper plate of a boom structure  1  such as an excavator; 
         [0004]    a hydraulic piping  3  (e.g., hydraulic piping for an arm cylinder) seated on the piping seat  2 ; 
         [0005]    a steel clamp  5  having semi-circular shaped seating grooves formed therein to support the hydraulic piping  3 ; and 
         [0006]    a fastening member  6  configured to fasten the steel clamp  5  to the piping seat  2  to allow the hydraulic piping  3  to be securely fixed by the steel clamp  5  and the piping seat  2 . 
         [0007]    In this case, the hydraulic piping  3  is a metal pipe that is join-connected to a main piping (e.g., hydraulic hose) through a connector  9  mounted on an outlet side of the main piping connected at an inlet side thereof to a main control valve (MCV)  7  mounted on the upper swing structure. 
         [0008]    As described above, if a quarry work or breaker work is performed in a state in which the hydraulic piping  3  is securely fixed to the boom structure, since vibration occurring due to an external shock is directly transferred to the hydraulic piping  3  and the steel clamp  5 , leakage of hydraulic fluid occurs through a crack formed on the hydraulic piping  3  due to frequent vibration. 
         [0009]    Meanwhile, the conventional hydraulic piping fixing device entails a shortcoming in that since the fastening member  6  is loosened from the piping seat  2  due to vibration, and the fastening member  6  loosened due to the repeated work may escape from the piping seat  2 , the device is very vulnerable to vibration. Despite the disadvantage of causing damage to the machine image due to degradation of quality by the loosening of the fastening member  6  that fastens the steel clamp  5  to the piping seat, the conventional hydraulic piping fixing device constructed as an inexpensive structure is still applied to some construction sites. 
         [0010]      FIG. 2(   a ) is a side view of a boom structure, and  FIG. 2(   b ) is a cross-sectional view taken along the line A-A of  FIG. 2(   a ). 
         [0011]    Another conventional hydraulic piping fixing device for a construction machine in accordance with the prior art shown in  FIGS. 2(   a ) and  2 ( b ) includes: 
         [0012]    a piping seat  2  weldingly fixed to an upper plate of a boom structure  1  of an excavator; 
         [0013]    a lower clamp  10  seated on the piping seat  2 ; 
         [0014]    a hydraulic piping  3  (e.g., hydraulic piping for an arm cylinder) seated on seating grooves symmetrically formed on the left and right sides of the lower clamp  10 ; 
         [0015]    an upper claim  11  configured to securely fix the hydraulic piping  3  seated on the lower clamp  10 ; and 
         [0016]    a fastening member  12  configured to fasten the upper clamp  11  to the lower clamp  10  to allow the hydraulic piping  3  to be securely seated on the seating grooves of the upper and lower clamps  11  and  10 . 
         [0017]    Thus, since the hydraulic piping  3  is securely fixed in a state of being not brought into direct contact with the piping seat  2 , a problem associated with occurrence of vibration during the work can be overcome. 
         [0018]    In the meantime, the conventional hydraulic piping fixing device encounters a problem in that the fastening member  12  is loosened due to vibration occurring during the quarry work or the like to cause the hydraulic piping  3  to droop in a state in which the hydraulic piping  3  is connected to the main piping  9  by means of a connector  9  and then is mounted on the upper plate of the boom structure  1 . 
         [0019]    More specifically, the main piping  8  (e.g., hydraulic hose) connected to the main control valve (MCV) mounted on the upper swing structure of the excavator and the hydraulic piping  3  mounted on the upper plate of the boom structure  1  are connected to each other using the connector  9  so as to be fit for a hydraulic circuit. Thus, the arm cylinder can be driven by a hydraulic fluid supplied from the main control valve  7  through the main piping  8  and the hydraulic piping  3 . 
         [0020]    In this case, the fastening member  12  is gradually loosened due to vibration occurring during the quarry work and thus the fastening state of the upper clamp  11  that securely fixes the hydraulic piping  3  is also released gradually. Thus, the main piping  8  forcibly pulls the hydraulic piping  3  toward the upper swing structure to cause the hydraulic piping  3  to droop. 
         [0021]    The reason for this is that the boom structure  1  rotatably connected to the upper swing structure by the boom fixing pin  13  is pivotally driven along a given trajectory about a boom fixing pin  13  in a vertical direction, at which time, the fastening member  12  that securely fixes the upper clamp  11  to the lower clamp  10  is loosened due to vibration to cause the clamping force of the upper clamp  11  to the lower clamp  10  to be weakened. 
         [0022]    For this reason, the main piping  8  connected to the main control valve  7  forcibly pulls the hydraulic piping  3  securely fixed between the lower clamp  10  and the upper clamp  11  to cause the hydraulic piping  3  to droop. 
         [0023]    As described above, the hydraulic piping  3  is maintained in a state of being aligned in a straight line at an early stage in which the hydraulic piping  3  is securely mounted on the boom structure  1 . However, there is caused a problem in that when the hydraulic piping  3  droops due to vibration occurring during the work, the non-matched assembly position is exposed, thereby degrading an outer appearance image of the construction machine. 
         [0024]    For this reason, the fastening member  12  is designed to have a size larger than a reference size in order to prevent the fastening member  12  from drooping due to vibration occurring during the work. Alternatively, a separate clamp is installed in order to prevent the fastening member  12  from drooping, which leads to an increase in the number of parts, thereby deteriorating assembly workability. 
       DETAILED DESCRIPTION OF THE INVENTION 
     Technical Problems 
       [0025]    Accordingly, the present invention has been made to solve the aforementioned problem occurring in the prior art, and it is an object of the present invention to provide a hydraulic piping fixing device for a construction machine, in which even when bolts that fasten clamps for securely fixing the hydraulic piping to an upper plate of a boom structure are loosened due to vibration occurring during the work, the hydraulic piping can be prevented for drooping so that a coating layer formed on the outer surface of the hydraulic piping can be avoided from being peeled off. 
         [0026]    Another object of the present invention is to provide a hydraulic piping fixing device for a construction machine, in which the hydraulic piping can fixedly aligned easily in a straight line on the boom structure even without using a separate assembly jig. 
       Technical Solution 
       [0027]    To accomplish the above object, in accordance with a first embodiment of the present invention, there is provided a hydraulic piping fixing device for a construction machine, including a piping seat weldingly fixed to a boom structure, a pair of upper and lower clamps having a fixing portion fixed onto the piping seat and arc-shaped grooves symmetrically formed on the left and right sides of the fixing portion to support hydraulic piping arranged on the boom structure, and a fastening member configured to securely fix the fixing portion of the upper and lower clamps to the piping seat, the hydraulic piping fixing device including: 
         [0028]    a hydraulic piping fixing plate mounted on the piping seat; 
         [0029]    a connector configured to joint-connect a main piping that is connected to a main control valve mounted on an upper swing structure and a hydraulic piping that is arranged on the boom structure; and 
         [0030]    a bolt and a nut configured to securely fix the connector to the hydraulic piping fixing plate; 
         [0031]    whereby when the fastening member is loosened due to vibration occurring during the work, the hydraulic piping are prevented from drooping by the connector fixed to the hydraulic piping fixing plate. 
         [0032]    In accordance with a second embodiment of the present invention, there is provided a hydraulic piping fixing device for a construction machine, including a piping seat weldingly fixed to a boom structure, a pair of upper and lower clamps having a fixing portion fixed onto the piping seat and arc-shaped grooves formed to extend from the fixing portion to support a hydraulic piping arranged on the boom structure, and a fastening member configured to securely fix the fixing portion of the upper and lower clamps to the piping seat, the hydraulic piping fixing device including: 
         [0033]    a hydraulic piping fixing plate mounted on the piping seat; 
         [0034]    a connector configured to joint-connect a main piping that is connected to a main control valve mounted on an upper swing structure and a hydraulic piping that is arranged on the boom structure; and 
         [0035]    a bolt and a nut configured to securely fix the connector to the hydraulic piping fixing plate 
         [0036]    whereby when the fastening member is loosened due to vibration occurring during the work, the hydraulic piping are prevented from drooping by the connector fixed to the hydraulic piping fixing plate. 
         [0037]    In accordance with a preferred embodiment of the present invention, the hydraulic piping fixing plate may be securely fixed to the piping seat  51  by a bolt  63  that is fastened to a screw hole  51   a  formed on a side surface of the piping seat  51 . 
         [0038]    The hydraulic piping fixing plate  58  may include a first fixing plate  66  mounted on the fixing portion  52  of the upper clamp  55 , and a second fixing plate  67  which is curvedly formed to extend from the first fixing plate  66  and to which the bolt  63  for securely fixing the connector  62  to the hydraulic piping fixing plate  58  is fastened. 
         [0039]    The hydraulic piping fixing plate may be mounted on an auxiliary piping seat weldingly fixed to the boom structure. 
         [0040]    The nut  64  engaged with the bolt for securely fixing the connector to one surface of the hydraulic piping fixing plate may be weldingly fixed to the other surface of the hydraulic piping fixing plate. 
         [0041]    The bolt  63  for securely fixing the connector  62  to the hydraulic piping fixing plate  58  may be primarily fastened to a screw hole  51   a  that is formed on a plate-shaped connector  62   a  fixed to the hydraulic piping side, and may be secondarily fastened to the nut  64 . 
       Advantageous Effect 
       [0042]    The hydraulic piping fixing device for a construction machine in accordance with an embodiment of the present invention as constructed above has the following advantages. 
         [0043]    Even when bolts that fasten the clamps for securely fixing the hydraulic piping to the upper plate of the boom structure are loosened due to vibration occurring during the work, the hydraulic piping can be prevented for drooping so that a coating layer formed on the outer surface of the hydraulic piping can be avoided from being peeled off. In addition, the hydraulic piping can fixedly aligned easily in a straight line on the boom structure even without using a separate assembly jig, thereby improving workability. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0044]    The above objects, other features and advantages of the present invention will become more apparent by describing the preferred embodiments thereof with reference to the accompanying drawings, in which: 
           [0045]      FIG. 1  is a schematic view showing a conventional hydraulic piping fixing device for a construction machine in accordance with the prior art; 
           [0046]      FIGS. 2(   a ) and  2 ( b ) are another conventional hydraulic piping fixing device for a construction machine in accordance with the prior art; 
           [0047]      FIG. 3  is a schematic view showing a use state of a hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention; 
           [0048]      FIG. 4  is an exploded perspective view showing main elements of a hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention; 
           [0049]      FIG. 5  is an exploded perspective view showing a state in which the hydraulic piping is fixedly aligned in a straight line on a boom structure in a hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention; 
           [0050]      FIG. 6  is an exploded perspective view showing a modification of a hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention; 
           [0051]      FIG. 7  is an exploded perspective view showing another modification of a hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention; 
           [0052]      FIG. 8  is an exploded perspective view showing main elements of a hydraulic piping fixing device for a construction machine in accordance with a second embodiment of the present invention; 
           [0053]      FIG. 9  is an exploded perspective view showing a modification of a hydraulic piping fixing device for a construction machine in accordance with a second embodiment of the present invention; and 
           [0054]      FIG. 10  is an exploded perspective view showing another modification of a hydraulic piping fixing device for a construction machine in accordance with a second embodiment of the present invention. 
       
    
    
     EXPLANATION ON REFERENCE NUMERALS OF MAIN ELEMENTS IN THE DRAWINGS 
       [0000]    
       
           50 : first rubber pad 
           50 ; boom structure 
           52 ; fixing portion 
           54 ; groove 
           56 ; lower clamp 
           58 ; hydraulic piping fixing plate 
           60 ; main piping 
           62 ; connector 
           64 ; nut 
           66 ; first fixing plate 
           68 ; auxiliary piping seat 
           70 ; lower clamp 
           72 ; fixing portion 
       
     
       PREFERRED EMBODIMENTS OF THE INVENTION 
       [0068]    Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The matters defined in the description, such as the detailed construction and elements, are nothing but specific details provided to assist those of ordinary skill in the art in a comprehensive understanding of the invention, and the present invention is not limited to the embodiments disclosed hereinafter. 
         [0069]    A hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention as shown in  FIGS. 3 to 7  includes a piping seat  51  weldingly fixed to a boom structure  50 , a pair of upper and lower clamps  55  and  56  having a fixing portion  52  fixed onto the piping seat  51  and arc-shaped grooves  54  symmetrically formed on the left and right sides of the fixing portion  52  to support a hydraulic piping (e.g., hydraulic piping for an arm cylinder)  53  arranged on the boom structure  50 , and a fastening member  57  configured to securely fix the fixing portion  52  of the upper and lower clamps  55  and  56  to the piping seat  51 . 
         [0070]    The hydraulic piping fixing device for a construction machine includes: 
         [0071]    a hydraulic piping fixing plate  58  that is mounted on the piping seat  51 ; 
         [0072]    a connector  62  ( 62   a;  a connector on a hydraulic piping  53  side/ 62   b : a connector on a main piping  60  side) that is weldingly fixed to an end of a main piping (e.g., hydraulic hose)  60  that is connected to the main control valve (MCV)  59  mounted on an upper swing structure and an end of the hydraulic piping (e.g., metal pipe)  53  that is arranged on the boom structure  50 , respectively, and joint-connects the fixed ends of the main piping and the hydraulic piping through the fastening of a bolt  61 ; and 
         [0073]    a bolt  63  and a nut  64  that securely fix the connector  62  to the hydraulic piping fixing plate  58 , 
         [0074]    whereby when the fastening member  57  is loosened due to vibration occurring during the work, the hydraulic piping  53  is prevented from drooping by the connector  62  fixed to the hydraulic piping fixing plate  58 . 
         [0075]    As shown in  FIG. 3 , the bolt  63  that securely fixes the connector  62  to the hydraulic piping fixing plate  58  is primarily fastened to a screw hole  51   a  that is formed on a plate-shaped connector  62   a  fixed to the hydraulic piping  53  side, and then is secondarily fastened to the nut  64 . 
         [0076]    As shown in  FIG. 4 , the hydraulic piping fixing plate  58  is securely fixed to the piping seat  51  by a plurality of bolts  63  that is fastened to a plurality of screw holes  51   a  formed on a side surface of the piping seat  51 . 
         [0077]    As shown in  FIG. 6 , the hydraulic piping fixing plate  58  includes a first fixing plate  66  mounted on the fixing portion  52  of the upper clamp  55  by the fastening member  57 , and a second fixing plate  67  which is curvedly formed to extend from the first fixing plate  66  and to which the bolts  63  for securely fixing the connector  62  to the hydraulic piping fixing plate  58  are fastened. 
         [0078]    In this case, the configuration of the piping seat  51  weldingly fixed to a boom structure  50 , and the pair of upper and lower clamps  55  and  56  having a fixing portion  52  fixed onto the piping seat  51  by the fastening member  57  and the arc-shaped grooves  54  symmetrically formed on the left and right sides of the fixing portion  52  to support the hydraulic piping  53  is the same as that of the hydraulic piping shown in  FIG. 4 . Thus, the detailed description of the same configuration thereof will be omitted to avoid redundancy, and the same elements are denoted by the same reference numerals. 
         [0079]    As shown in  FIG. 7 , the hydraulic piping fixing plate  58  is mounted on an auxiliary piping seat  68  weldingly fixed to the boom structure  50  by bolts  71 . 
         [0080]    In this case, the configuration of the piping seat  51  weldingly fixed to a boom structure  50 , and the pair of upper and lower clamps  55  and  56  having a fixing portion  52  fixed onto the piping seat  51  by the fastening member  57  and the arc-shaped grooves  54  symmetrically formed on the left and right sides of the fixing portion  52  to support the hydraulic piping  53  is the same as that of the hydraulic piping shown in  FIG. 4 . Thus, the detailed description of the same configuration thereof will be omitted to avoid redundancy, and the same elements are denoted by the same reference numerals. 
         [0081]    Although not shown in the drawings, the nut  64  engaged with the bolt  63  for securely fixing the connector  62  to one surface of the hydraulic piping fixing plate  58  is weldingly fixed to the other surface of the hydraulic piping fixing plate  58 . 
         [0082]    Hereinafter, a use example of the hydraulic piping fixing device for a construction machine in accordance with a first embodiment of the present invention will be described in detail with reference to the accompanying drawings. 
         [0083]    As shown in  FIGS. 3 to 5 , the lower clamp  56  is seated on the piping seat  51  weldingly fixed to the boom structure  50 , and the hydraulic piping  53  is seated on the grooves formed on the left and right sides of the lower clamp  56 . Thereafter, the upper clamp  55  is superimposed on the lower clamp  56  and the fastening member  57  is fastened to the piping seat  51  to securely fix the hydraulic piping  53 . 
         [0084]    In this case, as shown in  FIG. 5 , plate-shaped connectors  62   a  respectively mounted on the hydraulic piping  53  are aligned in a straight line on the boom structure  50  (indicated by a reference symbol “a”). That is, the connectors  62   a  are is fixed to form a straight line using the hydraulic piping fixing plate  58  fastened to the piping seat  51  by the bolts  65 . 
         [0085]    Hereinafter, a process of fixing the hydraulic piping  53  using the hydraulic piping fixing plate  58  fixed to the piping seat  51  will be described in detail. 
         [0086]    As shown in  FIGS. 3 to 5 , the hydraulic piping fixing plate  58  is securely fixed to the piping seat  51  by bolts  63  that are fastened to screw holes  51  a formed on a side surface of the piping seat  51 . 
         [0087]    In this case, the boom structure  50  is docked to the upper swing structure so as to joint-connect the main piping  60  that is at one end thereof to the main control valve  59  mounted the upper swing structure and the hydraulic piping  53  mounted on the boom structure  50 . Thereafter, the connector  62   b  fixed to the other end of the main piping  60  and the connector  62   a  fixed to the hydraulic piping  53  are closely abut against with each other, and then the connector  62   b  and the connector  62   a  are fastened to each other by the bolts  61  so that the main piping  60  and the hydraulic piping  53  can be join-connected so as to fluidically communicate with each other. 
         [0088]    In the meantime, the bolts  63  (for example, two bolts are used) that securely fix the connector  62 ;  62   a,    62   b  to one surface of the hydraulic piping fixing plate  58  are required to have a sufficient length enough to pass through the main piping-side connector  62   b,  the hydraulic piping-side connector  62   a,  and the hydraulic piping fixing plate  58  in this order and then to be fastened to the nuts  64  on the other surface of the hydraulic piping fixing plate  58 . 
         [0089]    As described above, the connectors  62   b  and  62   a  weldingly fixed to the main piping  60  and the hydraulic piping  53 , respectively, are fixed to the hydraulic piping fixing plate  58  by the bolts  63 , so that even if the fastening member  57  that securely fixes the upper and lower clamps  55  and  56  to the piping seat  51  to support the hydraulic piping  53  is loosened due to vibration occurring during the quarry work or the like, the hydraulic piping  53  supported by the upper and lower clamps  55  and  56  can be prevented from drooping. 
         [0090]    That is, the connector  62   b  weldingly fixed to the main piping  60  and the connector  62   a  weldingly fixed to the hydraulic piping  53  are closely abut against each other and then are coupled to each other by bolts  61 . These connectors  62 ;  62   a,   62   b  are fastened to the hydraulic piping fixing plate  58  by the bolts  63  passing therethrough. 
         [0091]    For this reason, if the fastening member  57  by which the upper and lower clamps  55  and  56  are fixed to the piping seat  51  is loosened due to vibration occurring during the work to cause a fastening force of the upper and lower clamps  55  and  56  to weakened, the boom structure  50  is pivotally rotated about a boom fixing pin  73  in a vertical direction while forming a given trajectory, so that even when the main piping  60  pulls the hydraulic piping  53  toward the upper swing structure, the connector  62   a  fixed to the hydraulic piping  53  can be maintained in a state of being fixed to the hydraulic piping fixing plate  58  by the bolts  63 , thereby preventing the hydraulic piping  53  from drooping. 
         [0092]    In this case, the bolts  63  are primarily screwed to screw holes formed on the connector  62   a  fixed to the hydraulic piping  53  and then are secondarily fastened to nuts  64  positioned on the other surface of the hydraulic piping fixing plate  58  after passing through through-holes of the hydraulic piping fixing plate  58 . Thus, the fastening force by which the connector  62   a  fixed to the hydraulic piping  53  is securely fixed to the hydraulic piping fixing plate  58  is maintained semipermanently so that the hydraulic piping  53  is prevented from drooping. For this reason, when the hydraulic piping  53  droops, it can be prevented that a coating layer formed on the hydraulic piping  53  is peeled off or the assembled position of the hydraulic piping  53  with respect to the boom structure  50  is not uniform to cause an outer appearance image to be degraded. 
         [0093]    In the meantime, when the connector  62  that join-connects the hydraulic piping  53  and the main piping  60  is securely fixed to the boom structure  50 , it can be fixedly aligned in a straight line on relative to the hydraulic piping fixing plate  58  fixed to the piping seat  51  without using a separate jig. 
         [0094]    A hydraulic piping fixing device for a construction machine in accordance with a second embodiment of the present invention as shown in  FIGS. 8 to 10  includes a piping seat  51  weldingly fixed to a boom structure  50 , a pair of upper and lower clamps  69  and  70  having a fixing portion  72  fixed onto the piping seat  51  and arc-shaped grooves  74  formed to extend from one side of the fixing portion  72  to support a hydraulic piping  53  arranged on the boom structure  50 , and a fastening member  57  configured to securely fix the fixing portion  72  of the upper and lower clamps  69  and  70  to the piping seat  51 . 
         [0095]    The hydraulic piping fixing device for a construction machine includes: a hydraulic piping fixing plate  58  that is mounted on the piping seat  51 ; 
         [0096]    a connector  62  ( 62   a;  a connector on a hydraulic piping  53  side/ 62   b : a connector on a main piping  60  side) that is weldingly fixed to an end of a main piping (e.g., hydraulic hose)  60  that is connected to the main control valve (MCV)  59  mounted on an upper swing structure and an end of the hydraulic piping (e.g., metal pipe)  53  that is arranged on the boom structure  50 , respectively, and joint-connects the fixed ends of the main piping and the hydraulic piping through the fastening of a bolt  61 ; and 
         [0097]    a bolt  63  and a nut  64  that securely fix the connector  62  to the hydraulic piping fixing plate  58 , 
         [0098]    whereby when the fastening member  57  is loosened due to vibration occurring during the work, the hydraulic piping  53  is prevented from drooping by the connector  62  fixed to the hydraulic piping fixing plate  58 . 
         [0099]    In this case, the configuration of the hydraulic piping fixing plate  58  mounted on the piping seat  51 , the connector  62  that joint-connects the main piping  60  mounted on the upper swing structure  50  and the hydraulic piping  53  arranged on the boom structure  50 , and the bolt  63  that securely fixes the connector  62  to the hydraulic piping fixing plate  58  so that even when the fastening member  57  that securely fixes the upper and lower clamps  55  and  56  to the piping seat  51  to support the hydraulic piping  53  is loosened due to vibration occurring during the work, the hydraulic piping  53  is prevented from drooping by the hydraulic piping fixing plate  58  is the same that of the hydraulic piping fixing device in accordance with the first embodiment of the present invention. Thus, the detailed description of the same configuration thereof will be omitted to avoid redundancy, and the same elements are denoted by the same reference numerals. 
         [0100]    Hereinafter, a use example of the hydraulic piping fixing device for a construction machine in accordance with a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. 
         [0101]    As shown in  FIGS. 8 to 10 , the lower clamp  70  is seated on the piping seat  51  weldingly fixed to the boom structure  50 , and the hydraulic piping  53  is seated on the grooves formed to extend from one side of the fixing portion  72 . Thereafter, the upper clamp  69  is superimposed on the lower clamp  70  and the fastening member  57  is fastened to the piping seat  51  to securely fix the hydraulic piping  53 . 
         [0102]    As described above, since the hydraulic piping  53  supported by the upper and lower clamps  69  and  70  is fixed separately in such a manner as not to be brought into direct contact with the piping seat  51 , vibration occurring during the work can be prevented from being directly transferred to the hydraulic piping  53  and the upper and lower clamps  69  and  70 . 
         [0103]    While the present invention has been described in connection with the specific embodiments illustrated in the drawings, they are merely illustrative, and the invention is not limited to these embodiments. It is to be understood that various equivalent modifications and variations of the embodiments can be made by a person having an ordinary skill in the art without departing from the spirit and scope of the present invention. Therefore, the true technical scope of the present invention should not be defined by the above-mentioned embodiments but should be defined by the appended claims and equivalents thereof. 
       INDUSTRIAL APPLICABILITY 
       [0104]    As described above, according to the hydraulic piping fixing device for a construction machine in accordance with an embodiment of the present invention, even when the bolts that fasten the clamps for securely fixing the hydraulic piping to the upper plate of the boom structure are loosened due to vibration occurring during the work, the hydraulic piping can be prevented for drooping by securely fixing a flange of the hydraulic piping to the hydraulic piping fixing plate fixed to the piping seat using a separate bolt. In addition, the hydraulic piping can fixedly aligned in a straight line on the boom structure even without using a separate assembly jig.