JP2009007764A - Construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance workability when an opening/closing cover is mounted to a support member via a hinge. <P>SOLUTION: A female screw member 21 is provided in a support-side mounting portion 17B of the hinge 17 which is fixed to a left rear opening/closing cover 16. A movable bolt 22 is rotatably supported in a left rear support member 15, and screwed into the female screw member 21, so that the hinge 17 can be moved in a moving direction B-B orthogonal to the direction A-A of fastening with a fastening bolt 18 with respect to the left rear support member 15. Thus, the amount of screwing the moving bolt 22 into the female screw member 21 is adjusted so that, for example, a worker can adjust a position of the left rear opening/closing cover 16 with respect to the left rear support member 15 within the range of a long groove hole 15D of the left rear support member 15 without moving the left rear opening/closing cover 16 by supporting it by hand, and so that the workability can be enhanced when the left rear opening/closing cover 16 is mounted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a construction machine such as a hydraulic excavator or a wheel loader, and more particularly to a construction machine provided with an opening / closing cover that constitutes a building for a mounted device.

  Generally, a hydraulic excavator as a construction machine is provided with a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and an upside-down movable structure on the front side of the upper revolving body. It is roughly constituted by the working device.

  Here, the upper revolving unit is a weight of a revolving frame that forms a support structure, a cab that is provided on the left side of the front part of the revolving frame and that defines a driver's cab, and a work device that is provided on the rear end side of the revolving frame. The counterweight is generally constituted by a counterweight for balancing, and a building provided on the revolving frame located on the front side of the counterweight. And a building covers mounting apparatuses, such as an engine, a hydraulic pump, and a heat exchange apparatus, which are mounted on the revolving frame.

  By the way, the building provided on the swivel frame is usually provided with a support member fixed to the swivel frame, and an opening / closing cover that is arranged around the mounted device and can be opened and closed via a hinge. It is roughly constituted by. And when performing maintenance and inspection work on equipment such as an engine housed in a building, the open / close cover is opened and closed (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 11-158921 Japanese Patent Laid-Open No. 2000-212997

  Here, since the opening / closing covers constituting the building are usually arranged adjacent to other opening / closing covers, etc., in order to enhance the appearance of the hydraulic excavator, a gap formed between these adjacent covers can be formed as much as possible. It needs to be uniform.

  For this reason, when the opening / closing cover is attached to the support member via a hinge, the hinge fixed to the opening / closing cover is usually temporarily fixed to the support member using fastening bolts, and the opening / closing cover is adjacent to each other with the opening / closing cover closed. Check the gap formed between other covers. Then, after adjusting the attachment position of the hinge to the support member so that the gap between the open / close cover and the other cover is uniform, the open / close cover can be attached to the support member by tightening the fastening bolt. it can.

  However, when adjusting the mounting position of the hinge relative to the support member so that the gap between the open / close cover and the other cover is uniform, the operator loosens the fastening bolt while holding the open / close cover by hand, It is necessary to move the hinge fixed to the opening / closing cover with respect to the support member. In addition, it is necessary for an operator to tighten the fastening bolt while supporting the opening / closing cover at a position where the gap between the opening / closing cover and the other cover is uniform.

  As described above, according to the conventional technique, the operator needs to adjust the attachment position of the hinge with respect to the support member while supporting and moving the opening / closing cover, which is a heavy object, by hand. There is a problem of poor workability.

  Further, when adjusting the mounting position of the hinge with respect to the support member, the operator supports and moves the opening / closing cover to which the hinge is fixed, so it is difficult to finely adjust the mounting position of the hinge with respect to the support member. There is a problem.

  Furthermore, the work for confirming the gap generated between the open / close cover and another cover needs to be performed with the open / close cover closed, whereas the work for attaching the hinge of the open / close cover to the support member with the fastening bolt is It is necessary to do this with the cover open. Therefore, when the operator closes the open / close cover, the hinge is supported by the fastening bolt while the open / close cover is opened while predicting a gap that may be generated between the open / close cover and the other cover. Work to attach to the member.

  For this reason, when the opening / closing cover is attached to the support member and then closed, when the opening / closing cover is closed, the prediction at the time of attachment may be lost and a non-uniform gap may be formed between the opening / closing cover and another cover. As a result, in the prior art, the work for checking the gap between the above-mentioned opening / closing cover and another cover and the work for attaching the opening / closing cover to the support member are repeated many times. There is a problem that efficiency is lowered.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a construction machine capable of improving workability when attaching an opening / closing cover to a support member via a hinge.

  In order to solve the above-described problems, the present invention includes a frame forming a support structure, a mounting device including an engine mounted on the frame, and a building provided on the frame so as to cover the mounting device, The building includes a support member fixed to the frame, an opening / closing cover arranged to be openable and closable around the mounted device, and a hinge fixed to the opening / closing cover and attached to the support member It is applied to the construction machine comprised by these.

  A feature of the configuration adopted by the invention of claim 1 is that a hinge fastening member for fastening the hinge to the support member and the hinge fastening member in a state in which the hinge fastening member is loosened. A hinge moving mechanism for moving in a moving direction substantially perpendicular to the fastening direction is provided.

  According to a second aspect of the present invention, at least one of the hinge and the support member has a loose fitting hole in which the hinge fastening member is loosely fitted so as to be movable in a movement direction substantially orthogonal to the fastening direction. There is a configuration to provide.

  According to a third aspect of the present invention, the hinge includes a cover-side attachment portion fixed to the opening / closing cover and a support-side attachment portion attached to the support member, and the hinge fastening member is a support for the hinge. A female screw member that includes a fastening bolt that fastens the side attachment portion to the support member, and the hinge moving mechanism is provided on the support side attachment portion of the hinge substantially perpendicular to the fastening direction of the fastening bolt. And a movable bolt that is rotatably supported by the support member and is screwed to the female screw member to move the hinge relative to the support member within the range of the loose fitting hole.

  According to a fourth aspect of the present invention, the hinge includes a cover-side attachment portion fixed to the opening / closing cover and a support-side attachment portion attached to the support member, and the hinge fastening member is a support for the hinge. The side mounting portion is constituted by a fastening bolt that fastens to the support member, and the hinge moving mechanism includes a female screw member that is provided on the support member substantially orthogonal to the fastening direction of the fastening bolt, and the hinge An L-shaped intermediate plate that is provided between the support-side mounting portion and the support member, the fastening bolt is inserted on one side and the other side faces the female screw member, and the intermediate plate A movable bolt that is rotatably supported on the other surface side and is screwed to the female screw member to move the hinge relative to the support member in the range of the loose fitting hole via the intermediate plate. It lies in the fact was.

  According to the first aspect of the present invention, with the hinge fastening member loosened, the hinge fixed to the opening / closing cover is moved in a moving direction substantially perpendicular to the fastening direction by the hinge fastening member using the hinge moving mechanism. Thus, the position of the hinge relative to the support member can be adjusted. Then, after adjusting the position of the hinge, the opening / closing cover can be attached to the support member by fastening the hinge of the opening / closing cover to the support member by the hinge fastening member.

  In this case, since the position of the hinge relative to the support member can be adjusted by the hinge moving mechanism, for example, the support member is compared with the case where the operator adjusts the position relative to the support member while moving the opening / closing cover by hand. The workability when attaching the opening / closing cover to can be improved. Further, the delicate position adjustment of the hinge with respect to the support member can be easily performed by the hinge moving mechanism.

  Moreover, the hinge fixed to the opening / closing cover is moved in a direction substantially perpendicular to the fastening direction by the hinge fastening member by the hinge moving mechanism, so that the opening / closing cover can be used as a support member even when the opening / closing cover is closed. Can be moved. Therefore, the operation of adjusting the gap generated between the open / close cover and another adjacent cover can be performed efficiently with the open / close cover closed.

  According to the invention of claim 2, when the hinge fastening member is loosened, the hinge fastening member is orthogonal to the fastening direction within a range of a loose fitting hole provided in at least one of the hinge and the support member. It can move in the moving direction. Thereby, the hinge fixed to the opening / closing cover can be moved with respect to the support member, and the position of the hinge relative to the support member can be adjusted.

  According to the third aspect of the present invention, the movable bolt supported rotatably on the support member is screwed into the female screw member provided on the support side mounting portion of the hinge, so that the hinge secured to the opening / closing cover is free to move. The support member can be moved in the moving direction substantially orthogonal to the fastening direction of the fastening bolt within the range of the fitting hole. Therefore, the position of the hinge with respect to the support member can be finely adjusted in accordance with the screwing amount of the moving bolt with respect to the female screw member. As a result, it is possible to easily adjust the position of the opening / closing cover with respect to the support member, so that the gap between the opening / closing cover and another adjacent cover can be made uniform, and the appearance beauty of the construction machine is improved. be able to.

  According to the fourth aspect of the present invention, the moving bolt supported rotatably on the intermediate plate is screwed to the female screw member provided on the support member, so that the hinge fixed to the open / close cover is attached to the intermediate plate. Accordingly, the support member can be moved in the moving direction substantially orthogonal to the fastening direction of the fastening bolt within the range of the loose fitting hole.

  Hereinafter, an embodiment of a construction machine according to the present invention will be described in detail with reference to FIGS. 1 to 16 by taking as an example a case where the construction machine is applied to a hydraulic excavator.

  First, FIG. 1 to FIG. 10 show a first embodiment of the present invention. In this embodiment, a loose fitting hole in which a fastening bolt is loosely fitted is provided in a support member, and a female screw member is provided in a hinge. The case where the moving bolt screwed to this female screw member is provided in the support member is illustrated.

  In the figure, reference numeral 1 denotes a hydraulic excavator as a typical example of a construction machine. Here, the excavator 1 includes a crawler-type lower traveling body 2 that can be self-propelled, an upper revolving body 3 that is turnably mounted on the lower traveling body 2, and a front side of the upper revolving body 3. It is generally configured by the working device 4 provided so as to be able to move up and down, and is suitably used for excavation work of earth and sand. The upper swing body 3 includes a swing frame 5, a cab 6, a counterweight 7, an engine 8, a building 11 and the like which will be described later.

  Reference numeral 5 denotes a revolving frame that serves as a base of the upper revolving structure 3, and the revolving frame 5 is formed using a thick steel plate and extends in the front and rear directions, as shown in FIG. A left vertical plate 5B, a right vertical plate 5C, and a bottom plate 5A and a left vertical plate 5B, which are erected on 5A before and extending rearward, are connected to the bottom plate 5A and the left vertical plate 5B via a plurality of overhanging beams. The side frame 5D and the right side frame 5E that is connected to the bottom plate 5A and the right vertical plate 5C via a plurality of overhanging beams and that extend forward and rearward are roughly configured to form a strong support structure.

  Here, at the front ends of the left and right vertical plates 5B and 5C constituting the revolving frame 5, the base end side of the working device 4 is rotatably attached, and the rear ends of the left and right vertical plates 5B and 5C. A counterweight 7 to be described later is attached to the part. An engine support bracket 5F is provided on the rear end side between the left and right vertical plates 5B and 5C, and an engine 8 described later is mounted on the engine support bracket 5F.

  Reference numeral 6 denotes a cab disposed on the left side of the front portion of the revolving frame 5. The cab 6 defines a cab in which an operator is boarded. Inside the cab 6 are arranged a driver's seat where an operator is seated, various operation levers operated by the operator (none of which are shown).

  7 is a counterweight provided on the rear end side of the revolving frame 5. The counterweight 7 is attached to the rear end portions of the left and right vertical plates 5B and 5C constituting the revolving frame 5. The weight balance is taken.

  Reference numeral 8 denotes an engine as a mounted device that is located on the front side of the counterweight 7 and is mounted on the turning frame 5, and the engine 8 is mounted on the left side of the engine support bracket 5F of the turning frame 5, as shown in FIG. It is installed in a horizontal position extending in the right direction. A cooling fan 8A for supplying cooling air to a heat exchange device 10 described later is provided on the left side of the engine 8, and a hydraulic pump 9 described later is attached to the right side of the engine 8.

  A hydraulic pump 9 is mounted on the right side of the engine 8 as a mounted device. The hydraulic pump 9 is driven by the engine 8. The hydraulic pump 9 discharges pressure oil for operation toward various hydraulic actuators provided in the lower traveling body 2, the upper swing body 3, and the work device 4.

  Reference numeral 10 denotes a heat exchange device as a mounted device provided on the left side of the engine 8 so as to face the cooling fan 8A. The heat exchange device 10 includes, for example, a radiator 10A for cooling engine coolant and an oil cooler for cooling hydraulic oil. Further, it is constituted by an intercooler or the like for cooling the intake air compressed by the turbocharger.

  11 is a building that is located on the front side of the counterweight 7 and is provided on the revolving frame 5. The building 11 includes an engine 8 mounted on the revolving frame 5, a hydraulic pump 9, as shown in FIG. It covers the equipment such as the heat exchange device 10. Here, as shown in FIGS. 2 to 4, the building 11 includes an upper surface cover 11A, a bonnet 11B, a right opening / closing cover 11C, a left front support member 12, a left front opening / closing cover 13, a left rear support member 15, and a left rear opening / closing. It is comprised by the cover 16 grade | etc.,.

  A left front support member 12 is provided on the revolving frame 5 so as to be located on the rear side of the cab 6. The left front support member 12 is provided with a left front opening / closing cover 13 described later. Here, as shown in FIGS. 4 and 5, the left front support member 12 is formed into a rectangular flat plate as a whole by bending a steel plate material, for example. The left front support member 12 is fixed on a screw seat (not shown) provided on the revolving frame 5 using a bolt or the like, so that the left front support member 12 stands on the revolving frame 5 in a state substantially orthogonal to the left side frame 5D. It is installed.

  Reference numeral 13 denotes a left front opening / closing cover which is attached to the left front support member 12 so as to be openable and closable. As shown in FIG. 4, the left front opening / closing cover 13 is formed in a generally rectangular flat plate shape using, for example, a steel plate material. ing. The left front opening / closing cover 13 is attached to the left front support member 12 so as to be openable and closable via upper and lower hinges 14 and constitutes the left side surface of the building 11 together with the left rear opening / closing cover 16 described later.

  A left rear support member 15 is provided on the revolving frame 5 and is located on the left front side of the counterweight 7. The left rear support member 15 is attached with a left rear opening / closing cover 16 via a hinge 17 described later. It is. Here, as shown in FIGS. 5 to 8, the left rear support member 15 is formed into a rectangular flat plate as a whole by bending a steel plate material, for example, and is located above and below the revolving frame 5. A rising plate portion 15A that rises in the direction and a frame plate portion 15B that is formed in a frame shape surrounding the rising plate portion 15A by bending the outer peripheral edge portion of the rising plate portion 15A at a right angle.

  Further, two bolt insertion holes 15C and 15C through which a moving bolt 22 described later is inserted are formed on the left end side of the rising plate portion 15A so as to be spaced apart from each other upward and downward (see FIG. 6). Further, long slot holes 15D described later are provided in the vicinity of the bolt insertion holes 15C in the frame plate portion 15B.

  15D and 15D are a pair of long groove holes provided in the left rear support member 15 as loose fitting holes, and a fastening bolt 18 described later is loosely fitted into the pair of long groove holes 15D. Here, each long groove hole 15D is disposed apart from the upper and lower parts of the frame plate portion 15B of the left rear support member 15 in the vicinity of each bolt insertion hole 15C, and is formed in a groove shape in the front and rear directions. It extends.

  The left rear support member 15 is fixed to a screw seat (not shown) provided on the revolving frame 5 using a bolt or the like, so that the left rear support member 15 is placed on the revolving frame 5 in a state substantially orthogonal to the left side frame 5D. The rising plate portion 15A of the left rear support member 15 faces the front surface of the counterweight 7 with a gap (see FIG. 9).

  Reference numeral 16 denotes a left rear opening / closing cover that is attached to the left rear support member 15 so as to be openable and closable. The left rear opening / closing cover 16 is disposed adjacent to the rear side of the left front opening / closing cover 13 and is, for example, as shown in FIG. In addition, it is opened and closed during maintenance and inspection work on the heat exchange device 10 accommodated in the building 11. Here, as shown in FIGS. 5 and 6, the left rear opening / closing cover 16 is formed in a rectangular plate shape as a whole using, for example, a steel plate, and swivels with a height dimension substantially equal to that of the left rear support member 15. It rises upward from the frame 5.

  Further, on the inner side surface of the left rear opening / closing cover 16, a reinforcing material 16A having a columnar shape extending in the upward and downward directions is fixed to be separated from the front and rear. The rear reinforcing member 16A is provided with hinges 17 to be described later, and the left rear opening / closing cover 16 is attached to the left rear support member 15 through the hinges 17 so as to be openable and closable. Yes.

  Reference numerals 17 and 17 are fixed to the left rear opening / closing cover 16 and attached to the left rear support member 15. Upper and lower hinges 17 open the left rear opening / closing cover 16 with respect to the left rear support member 15. It is supported so that it can be closed. Here, as shown in FIGS. 7 to 10, the hinge 17 is connected to the left rear opening / closing cover 16 by using a cover side mounting portion 17 </ b> A fixed to the reinforcing member 16 </ b> A by welding or the like and a fastening bolt 18 described later. A support-side attachment portion 17B attached to the rear support member 15 is provided, and the cover-side attachment portion 17A and the support-side attachment portion 17B are rotatably connected by a pin 17C.

  A pair of bolt insertion holes 17 </ b> D corresponding to the long groove holes 15 </ b> D formed in the left rear support member 15 are formed in the support side mounting portion 17 </ b> B. Further, on the front side of the support side mounting portion 17B, a protruding plate portion 17E that protrudes toward the left rear support member 15 by being bent at a right angle from the support side mounting portion 17B is provided. Is facing the bolt insertion hole 15 </ b> C of the left rear support member 15. Further, a bolt insertion hole 17F corresponding to the bolt insertion hole 15C is formed in the protruding plate portion 17E.

  Reference numeral 18 denotes a fastening bolt as a hinge fastening member. The fastening bolt 18 fastens the support side mounting portion 17B of the hinge 17 integrally fixed to the left rear opening / closing cover 16 to the left rear support member 15. Is. 7 to 10, the fastening bolt 18 is provided in the bolt insertion hole 17D provided in the support side mounting portion 17B of the hinge 17 and the left rear support member 15 (frame plate portion 15B). The support side mounting portion 17B of the hinge 17 is fastened to the frame plate portion 15B of the left rear support member 15 by screwing the nut 19 in a state of being inserted into the long groove hole 15D.

  Here, as shown in FIGS. 7 and 9, the fastening direction AA by the fastening bolt 18 coincides with the axial direction of the fastening bolt 18. The fastening bolt 18 is loosely fitted in the long slot 15D of the left rear support member 15, and moves in a moving direction BB extending in the front and rear directions perpendicular to the fastening direction (axial direction) AA. It is possible. Accordingly, when the hinge 17 is attached to the left rear support member 15 using the fastening bolt 18, the hinge 17 can be moved forward and backward within the range of the long slot 15D by the hinge moving mechanism 20 described later. It has a configuration.

  When the support side mounting portion 17B of the hinge 17 is attached to the left rear support member 15 using the fastening bolt 18, the bolt insertion hole 15C of the left rear support member 15 and the protruding plate portion 17E of the hinge 17 Are opposed to each other in the front and rear directions, and a hinge moving mechanism 20 described later is provided between the bolt insertion hole 15C of the left rear support member 15 and the protruding plate portion 17E of the hinge 17.

  Reference numeral 20 denotes a hinge moving mechanism provided between the left rear support member 15 and the projecting plate portion 17E of the hinge 17. The hinge moving mechanism 20 tightens the support side mounting portion 17B of the hinge 17 with the fastening bolt 18. It is moved in the moving direction BB substantially orthogonal to the wearing direction (axial direction) AA. Here, as shown in FIGS. 7 to 10, the hinge moving mechanism 20 is roughly constituted by a female screw member 21 described later and a moving bolt 22.

  21 is a female screw member provided on the support side mounting portion 17B of the hinge 17. The female screw member 21 is constituted by a back nut welded to the protruding plate portion 17E of the support side mounting portion 17B. The side is a female screw hole into which a later-described moving bolt 22 is screwed. As shown in FIG. 9, the female screw member 21 is disposed concentrically with the bolt insertion hole 17 </ b> F drilled in the protruding plate portion 17 </ b> E, and substantially orthogonal to the fastening direction AA of the fastening bolt 18. Is provided.

  A moving bolt 22 is rotatably supported by the left rear support member 15. The moving bolt 22 is screwed into a female screw member 21 provided on the support side mounting portion 17 </ b> B of the hinge 17. The hinge 17 fixed to 16 is moved with respect to the left rear support member 15 in a moving direction BB substantially orthogonal to the fastening direction AA of the fastening bolt 18 within the range of the long slot 15D.

  Here, the moving bolt 22 is rotatably supported by the bolt insertion hole 15 </ b> C by being inserted into the bolt insertion hole 15 </ b> C provided in the rising plate portion 15 </ b> A of the left rear support member 15. Further, a washer 23 having a diameter larger than that of the bolt insertion hole 15 </ b> C is inserted into the moving bolt 22, and the washer 23 is retained in the axial direction by a split pin 24 inserted into the moving bolt 22.

  In this manner, the moving bolt 22 is axially (front and rear) with respect to the left rear support member 15 by sandwiching the rising plate portion 15A of the left rear support member 15 by the bolt head 22A and the washer 23. Is supported so as to be able to rotate in a state in which movement is prohibited. The distal end side of the moving bolt 22 is configured to always screw into the female screw member 21 through a bolt insertion hole 17F provided in the protruding plate portion 17E of the hinge 17.

  Therefore, as shown in FIGS. 9 and 10, when the moving bolt 22 is rotated with the fastening bolt 18 loosened, the support-side mounting portion 17B of the hinge 17 provided with the female screw member 21 becomes the left rear support member. 15 moves in a moving direction BB substantially perpendicular to the fastening direction AA of the fastening bolt 18 within the range of the long groove hole 15D provided in 15.

  As a result, the left rear opening / closing cover 16 fixed to the cover side mounting portion 17A of the hinge 17 moves forward and rearward with respect to the left rear support member 15, so that the left front opening / closing cover 13 as shown in FIG. And the left rear opening / closing cover 16 are appropriately adjusted according to the amount of the moving bolt 22 screwed into the female screw member 21 so that the gap S can be made uniform.

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration. The hydraulic excavator 1 is self-propelled to the work site by the lower traveling body 2 and uses the working device 4 while turning the upper revolving body 3. Perform excavation work of earth and sand.

  Here, in the present embodiment, the left rear support member 15 is provided with the hinge moving mechanism 20 between the left rear support member 15 and the hinge 17 fixed to the left rear open / close cover 16, so that the left rear open / close cover 16 is provided on the left rear support member 15. The attachment work of the left rear opening / closing cover 16 will be described below.

  First, as shown in FIG. 8, the moving bolt 22 is inserted into the bolt insertion hole 15C provided in the left rear support member 15, and the moving bolt 22 is retained in the axial direction by the washer 23 and the split pin 24 (FIG. 9). reference). Accordingly, the moving bolt 22 sandwiches the rising plate portion 15A of the left rear support member 15 by the bolt head 22A and the washer 23, and the left rear support member 15 is prohibited from moving in the axial direction (front and rear directions). In such a state, it is supported rotatably.

  Next, the left rear opening / closing cover 16 to which the hinge 17 is fixed is disposed in the vicinity of the left rear support member 15, the bolt insertion hole 17 </ b> D provided in the support side mounting portion 17 </ b> B of the hinge 17, and the frame of the left rear support member 15. The fastening bolt 18 is inserted into the long groove hole 15D provided in the plate portion 15B. Then, by screwing the nut 19 into the fastening bolt 18, the support side mounting portion 17B of the hinge 17 is temporarily fixed to the left rear support member 15, and the left rear opening / closing cover 16 is secured to the long groove hole 15D by the fastening bolt 18. It is supported to move within the range.

  At this time, since the bolt insertion hole 15C of the left rear support member 15 and the protruding plate portion 17E of the hinge 17 face each other in the front and rear directions, the bolt insertion of the protruding plate portion 17E is performed as shown in FIGS. A moving bolt 22 rotatably supported by the left rear support member 15 is screwed into a female screw member 21 provided concentrically with the hole 17F.

  Here, since the moving bolt 22 is prohibited from moving in the axial direction with respect to the left rear support member 15, the moving bolt 22 screwed into the female screw member 21 is rotated to adjust the screwing amount. The support side mounting portion 17B of the hinge 17 provided with the female screw member 21 moves within the range of the long groove hole 15D provided in the left rear support member 15 and is substantially orthogonal to the fastening direction AA of the fastening bolt 18. It moves forward and backward along the direction BB.

  Thus, according to the present embodiment, the left rear opening / closing cover 16 is moved forward and rearward with respect to the left rear support member 15 without the operator supporting and moving the left rear opening / closing cover 16 by hand. For example, as shown in FIG. 3, the gap S between the left rear opening / closing cover 16 and the left front opening / closing cover 13 can be made uniform.

  Moreover, as shown in FIG. 9, the female screw member 21 and the moving bolt 22 constituting the hinge moving mechanism 20 are disposed substantially orthogonal to the fastening direction AA of the fastening bolt 18, so that, for example, the top surface In a state where the cover 11A is removed or before the counterweight 7 is attached, the screw head 22A of the moving bolt 22 is rotated to adjust the amount of screwing into the female screw member 21 while the left rear opening / closing cover 16 is closed. Can do. As a result, as shown in FIG. 3, with the left rear opening / closing cover 16 and the left front opening / closing cover 13 closed, the position of the left rear opening / closing cover 16 can be adjusted so that the gap S between them is uniform. Therefore, the workability can be further enhanced.

  After the position of the left rear opening / closing cover 16 is adjusted, the left rear opening / closing cover 16 is tightened by tightening the fastening bolt 18 and fastening the support side mounting portion 17B of the hinge 17 to the left rear support member 15. The installation work is completed.

  Thus, according to the present embodiment, the female screw member 21 that is substantially orthogonal to the fastening direction AA by the fastening bolt 18 is provided on the support side mounting portion 17B of the hinge 17 fixed to the left rear opening / closing cover 16. The left rear support member 15 rotatably supports a moving bolt 22, and the moving bolt 22 is screwed into the female screw member 21, whereby the hinge 17 is substantially orthogonal to the fastening direction AA by the fastening bolt 18. It is set as the structure moved to the moving direction BB (front and back direction) to perform.

  Therefore, the left rear support is adjusted by adjusting the screwing amount of the moving bolt 22 into the female screw member 21 in a state where the fastening bolt 18 is loosened and the support side mounting portion 17B of the hinge 17 is temporarily fixed to the left rear support member 15. The left rear opening / closing cover 16 can be moved forward and rearward within the long slot 15D of the member 15 to adjust the position of the left rear opening / closing cover 16 with respect to the left rear support member 15.

  In this case, the left rear opening / closing cover 16 is supported by the fastening bolts 18 inserted through the support side mounting portion 17B of the hinge 17 and the left rear support member 15, so that, for example, the operator holds the left rear opening / closing cover 16. It is not necessary to adjust the position of the left rear support member 15 while supporting and moving it by hand, and the workability when attaching the left rear opening / closing cover 16 can be improved.

  Moreover, the position of the hinge 17 with respect to the left rear support member 15 can be finely adjusted by adjusting the screwing amount of the moving bolt 22 into the female screw member 21 provided in the support side mounting portion 17B of the hinge 17. As a result, for example, as shown in FIG. 3, a gap between the left rear opening / closing cover 16 attached to the left rear opening / closing support member 15 via the hinge 17 and the left front opening / closing cover 13 adjacent to the left rear opening / closing cover 16. S can be made uniform and the appearance beauty of the excavator 1 can be enhanced.

  Furthermore, as shown in FIG. 9, the female screw member 21 and the moving bolt 22 constituting the hinge moving mechanism 20 are disposed substantially orthogonal to the fastening direction AA of the fastening bolt 18, so that, for example, the top surface In a state where the cover 11A is removed or before the counterweight 7 is attached, the screw head 22A of the moving bolt 22 is rotated to adjust the amount of screwing into the female screw member 21 while the left rear opening / closing cover 16 is closed. Can do. As a result, as shown in FIG. 3, with the left rear opening / closing cover 16 and the left front opening / closing cover 13 closed, the position of the left rear opening / closing cover 16 can be adjusted so that the gap S between them is uniform. it can. Therefore, for example, as in the prior art, it is not necessary to repeat the work of checking the gap between the open / close cover and another cover and the work of attaching the open / close cover to the support member, and the left rear open / close cover 16 is attached. When working efficiency can be increased.

  Next, FIG. 11 to FIG. 14 show a second embodiment of the present invention. The feature of this embodiment is that a female screw member provided on a support member, a support side mounting portion of a hinge, and a support member The hinge moving mechanism is constituted by an intermediate plate provided between and a moving bolt that is rotatably supported by the intermediate plate and screwed into the female screw member. In the present embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 31 denotes a left rear support member. The left rear support member 31 is used in this embodiment in place of the left rear support member 15 according to the first embodiment described above. The left rear opening / closing cover 16 is attached via Here, the left rear support member 31 is composed of a rising plate portion 31A and a frame plate portion 31B in substantially the same manner as the left rear support member 15 according to the first embodiment, and is formed in a rectangular flat plate shape as a whole. Has been.

  Further, a bolt insertion hole 31C through which a moving bolt 36 described later is inserted is formed on the left end side of the rising plate portion 31A so as to be spaced apart upward and downward (only the upper side is shown). Further, a pair of long groove holes 31D, 31D as loose fitting holes into which the fastening bolts 18 are loosely fitted are provided in the vicinity of the bolt insertion hole 31C in the frame plate portion 31B so as to be spaced apart from each other. (Only the upper side is shown).

  A hinge 32 is provided between the left rear support member 31 and the left rear opening / closing cover 16, and the hinge 32 is substantially the same as the hinge 17 according to the first embodiment described above. The cover side mounting portion 32A fixed to the reinforcing member 16A by welding or the like, and the support side mounting portion 32B attached to the left rear support member 31 using the fastening bolt 18 are provided. The cover mounting portion 32A and the support side mounting The part 32B is rotatably connected by a pin 32C. A pair of bolt insertion holes 32 </ b> D corresponding to the long groove holes 31 </ b> D formed in the left rear support member 31 are formed in the support side mounting portion 32 </ b> B.

  Reference numeral 33 denotes a hinge moving mechanism provided between the left rear support member 31 and the support side mounting portion 32B of the hinge 32. The hinge moving mechanism 33 is configured to fix the support side mounting portion 32B of the hinge 32 by the fastening bolt 18. It is moved in a moving direction BB substantially orthogonal to the fastening direction (axial direction) AA. Here, the hinge moving mechanism 33 is roughly constituted by a later-described female screw member 34, an intermediate plate body 35, and a moving bolt 36.

  Reference numeral 34 denotes a female screw member provided on the left rear support member 31. The female screw member 34 is constituted by a back nut welded to the rising plate portion 31A of the left rear support member 31, and the inner peripheral side thereof is a moving bolt described later. A female screw hole 36 is screwed. As shown in FIG. 13, the female screw member 34 is disposed concentrically with the bolt insertion hole 31 </ b> C drilled in the rising plate portion 31 </ b> A, and is substantially orthogonal to the fastening direction AA of the fastening bolt 18. Is provided.

  Reference numeral 35 denotes an intermediate plate provided between the support side mounting portion 32B of the hinge 32 and the left rear support member 31, and the intermediate plate 35 is L-shaped by bending a flat plate at a right angle. Is formed. Here, the intermediate plate 35 has one mounting surface 35A sandwiched between the left rear support member 31 and the support mounting portion 32B of the hinge 32, and the other end facing the female screw member 34 so that the moving bolt 22 is disposed. It is a bolt support surface 35B that is rotatably supported. A pair of bolt insertion holes 35C are formed in the mounting surface 35A at positions corresponding to the bolt insertion holes 32D of the hinge 32, and one bolt is provided on the bolt support surface 35B at a position corresponding to the female screw member 34. An insertion hole 35D is formed.

  Then, with the attachment surface 35A of the intermediate plate 35 sandwiched between the support side attachment portion 32B of the hinge 32 and the frame plate portion 31B of the left rear support member 31, the bolt insertion hole 32D of the hinge 32, the intermediate plate By inserting the fastening bolt 18 into the bolt insertion hole 35C of the body 35 and the long groove hole 31D of the left rear support member 31, and screwing the nut 19 into the fastening bolt 18, the intermediate plate body 35 is provided with the left rear support. The member 31 can move forward and backward in the range of the long slot 31D.

  A moving bolt 36 is rotatably supported on the bolt support surface 35B of the intermediate plate 35. The moving bolt 36 is screwed into a female screw member 34 provided on the left rear support member 31, thereby opening and closing the left rear. The moving direction B− of the hinge 32 fixed to the cover 16 with respect to the left rear support member 31 is substantially orthogonal to the fastening direction AA of the fastening bolt 18 in the range of the long slot 31D via the intermediate plate 35. It is moved to B.

  Here, the moving bolt 36 is inserted into a bolt insertion hole 35D provided on the bolt support surface 35B of the intermediate plate 35 and a washer 37. The washer 37 is axially moved by a split pin 38 inserted into the moving bolt 36. It has been secured. Thereby, the moving bolt 36 sandwiches the bolt support surface 35B of the intermediate plate 35 by the bolt head 36A and the washer 37, and the intermediate plate 35 is in a state where movement in the axial direction (front and rear) is prohibited. Is rotatably supported. The distal end side of the moving bolt 36 is configured to always screw into the female screw member 34 through a bolt insertion hole 31C provided in the rising plate portion 31A of the left rear support member 31.

  Therefore, as shown in FIGS. 13 and 14, when the moving bolt 36 is rotated with the fastening bolt 18 loosened to change the amount of screwing into the female screw member 34, the intermediate plate that supports the moving bolt 36 is used. The body 35 moves forward and backward with respect to the left rear support member 31 along a moving direction BB substantially perpendicular to the fastening direction AA of the fastening bolt 18 within the range of the long slot 31D.

  In this case, since the fastening bolt 18 is inserted into the bolt insertion hole 32D of the hinge 32 together with the bolt insertion hole 35C of the intermediate plate 35, the hinge 32 is moved forward and backward via the intermediate plate 35. be able to. As a result, the left rear opening / closing cover 16 fixed to the cover side mounting portion 32A of the hinge 32 can be moved forward and rearward to adjust the position of the left rear opening / closing cover 16 with respect to the left rear support member 31. It has become.

  This embodiment is provided with the hinge moving mechanism 33 as described above, and in the state in which the fastening bolt 18 is loosened, the moving bolt 36 is rotated to adjust the screwing amount into the female screw member 34. The left rear opening / closing cover 16 can be moved forward and rearward via the plate body 35 to adjust the position of the left rear opening / closing cover 16 with respect to the left rear support member 31. Thereby, also in this embodiment, for example, the operator does not need to adjust the position with respect to the left rear support member 31 while supporting and moving the left rear open / close cover 16 by hand, and when the left rear open / close cover 31 is attached. Workability can be improved.

  The position of the left rear opening / closing cover 16 with respect to the left rear support member 31 is adjusted by adjusting the screwing amount of the moving bolt 36 supported by the intermediate plate 35 with respect to the female screw member 34 provided on the left rear support member 31. Can be finely adjusted. As a result, as shown in FIG. 3, the clearance S between the left rear opening / closing cover 16 and the left front opening / closing cover 13 adjacent to the left rear opening / closing cover 16 can be made uniform, and the appearance of the hydraulic excavator 1 is beautiful. Can be increased.

  In the first embodiment described above, the case where the long slot 15D as a loose fitting hole is provided only in the left rear support member 15 of the support side mounting portion 17B of the hinge 17 and the left rear support member 15 is illustrated. is doing. However, the present invention is not limited to this. For example, as in the first modified example shown in FIG. 15, a long groove hole 17D ′ as a loose fitting hole is provided only in the support side mounting portion 17B of the hinge 17, and the left rear The support member 15 may be provided with a circular bolt insertion hole 15D ′.

  Further, for example, as in the second modification shown in FIG. 16, a long groove hole 15D as a loose fitting hole is provided in the left rear support member 15, and a long groove hole as a loose fitting hole is provided in the support side mounting portion 17B of the hinge 17. It is good also as a structure which provides 17D '. The same applies to the support side mounting portion 32B of the hinge 32 and the left rear support member 31 according to the second embodiment.

  Moreover, in 1st Embodiment mentioned above, the case where long slot hole 15D extended in the front and back direction is provided in the left rear support member 15 as a loose fitting hole is illustrated. However, the present invention is not limited to this. For example, an elliptical hole, a large-diameter hole, or the like may be used as the loose fitting hole instead of the long groove hole 15D. The same applies to the long slot 31D of the left rear support member 31 according to the second embodiment.

  In the first embodiment described above, the case where two upper and lower hinges 17 are provided between the left rear support member 15 and the left rear opening / closing cover 16 is illustrated. However, the present invention is not limited to this. For example, one or three or more hinges may be provided.

  Further, in the first embodiment described above, the case where the hinge moving mechanism 20 is provided between the hinge 17 attached to the left rear opening / closing cover 16 and the left rear support member 15 is illustrated. However, the present invention is not limited to this. For example, a hinge moving mechanism may be provided between the hinge 14 attached to the left front opening / closing cover 13 and the left front support member 12.

  Furthermore, in the embodiment described above, the excavator 1 is taken as an example of the construction machine. However, the present invention is not limited to this, and can be widely applied to other construction machines such as a hydraulic crane, a wheel loader, and a bulldozer.

1 is a front view showing a hydraulic excavator according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of an engine, a building, a left rear support member, a left rear opening / closing cover, and the like when viewed from the direction of arrows II-II in FIG. FIG. 2 is an enlarged front view showing a left front opening / closing cover, a left rear opening / closing cover and the like in FIG. 1. It is a perspective view which shows an upper revolving body in the state which opened the left front opening / closing cover and the left rear opening / closing cover. It is a perspective view which shows the state which has arrange | positioned the left front support member, the left front opening / closing cover, the left rear support member, and the left rear opening / closing cover on the turning frame. It is a disassembled perspective view which shows a left rear support member, a left rear opening / closing cover, a hinge, etc. It is a perspective view which expands and shows principal parts, such as a left rear support member, a left rear opening-and-closing cover, a hinge, a fastening bolt, and a hinge moving mechanism. It is a disassembled perspective view which decomposes | disassembles and shows the fastening bolt in FIG. 7, a hinge moving mechanism, etc. FIG. 4 is a cross-sectional view of a left rear support member, a left rear opening / closing cover, a hinge, a fastening bolt, a hinge moving mechanism, and the like viewed from the direction of arrows IX-IX in FIG. It is sectional drawing of the same position as FIG. 9 which shows the state which moved the left rear opening / closing cover by the hinge moving mechanism. It is a perspective view which expands and shows the principal parts, such as a hinge moving mechanism by 2nd Embodiment. It is a disassembled perspective view which decomposes | disassembles and shows the fastening volt | bolt, hinge moving mechanism, etc. in FIG. It is sectional drawing of the same position as FIG. 9 which shows the hinge moving mechanism etc. by 2nd Embodiment. It is sectional drawing of the same position as FIG. 13 which shows the state which moved the left rear opening / closing cover by the hinge moving mechanism. It is a disassembled perspective view similar to FIG. 8 which shows the 1st modification which provided the long groove hole in the support side attaching part of the hinge. It is a disassembled perspective view similar to FIG. 8 which shows the 2nd modification which provided the long groove hole in the support side attaching part and support member of a hinge.

Explanation of symbols

1 Hydraulic excavator 5 Swivel frame 8 Engine (equipment)
9 Hydraulic pump (equipped equipment)
10 Heat exchange device (equipped equipment)
11 Building 15, 31 Left rear support member 15D, 31D, 17D 'Long groove hole (free fitting hole)
16 Left rear open / close cover 17, 32 Hinge 17A, 32A Cover side mounting portion 17B, 32B Support side mounting portion 18 Fastening bolt (hinge fastening member)
20, 33 Hinge moving mechanism 21, 34 Female thread member 22, 36 Moving bolt 35 Intermediate plate body AA Fastening direction BB Moving direction

Claims (4)

A frame forming a support structure, a mounting device including an engine mounted on the frame, and a building provided on the frame so as to cover the mounting device,
The building includes a support member fixed to the frame, an opening / closing cover arranged to be openable and closable around the mounted device, and fixed to the opening / closing cover and attached to the support member. In construction machines composed of hinges,
A hinge fastening member for fastening the hinge to the support member, and a hinge for moving the hinge in a moving direction substantially orthogonal to a fastening direction by the hinge fastening member in a state in which the hinge fastening member is loosened A construction machine characterized by comprising a moving mechanism.   2. A configuration is provided in which at least one of the hinge and the support member is provided with a loose fitting hole in which the hinge fastening member is loosely fitted so as to be movable in a movement direction substantially orthogonal to the fastening direction. Construction machinery as described in. The hinge has a cover-side attachment portion fixed to the opening / closing cover, and a support-side attachment portion attached to the support member,
The hinge fastening member is constituted by a fastening bolt for fastening the support side mounting portion of the hinge to the support member,
The hinge moving mechanism includes a female screw member provided substantially orthogonal to a fastening direction of the fastening bolt at a support side mounting portion of the hinge, and rotatably supported by the support member and screwed into the female screw member. The construction machine according to claim 1 or 2, comprising a moving bolt that moves the hinge relative to the support member within the range of the loose fitting hole. The hinge has a cover-side attachment portion fixed to the opening / closing cover, and a support-side attachment portion attached to the support member,
The hinge fastening member is constituted by a fastening bolt for fastening the support side mounting portion of the hinge to the support member,
The hinge moving mechanism is provided between the female screw member provided substantially perpendicular to the fastening direction of the fastening bolt on the support member, and between the support side mounting portion of the hinge and the support member. An L-shaped intermediate plate having the fastening bolt inserted therein and the other surface facing the female screw member, and rotatably supported on the other surface side of the intermediate plate and screwed into the female screw member The construction machine according to claim 1 or 2, comprising a moving bolt that moves the hinge relative to the support member in the range of the loose fitting hole via the intermediate plate.

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