JP5451697B2 - Construction machinery - Google Patents

Description

  The present invention relates to a construction machine such as a hydraulic excavator, and more particularly to a construction machine including a hose protector that protects a hydraulic hose.

  In general, a hydraulic excavator, which is a representative example of a construction machine, includes a lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a work that is provided on the front side of the upper revolving body so as to be able to move up and down. It is roughly constituted by the device.

  Further, as a hydraulic excavator that is suitably used for excavation work such as a side groove, there is a swing type hydraulic excavator in which the working device can swing left and right with respect to the upper swing body. This swing-type hydraulic excavator is configured such that a swing post that swings left and right by a swing cylinder is provided on a swing frame that constitutes an upper swing body, and a work device is attached to the swing post so as to be able to move up and down. It has become. In addition, a hydraulic line connecting the control valve device disposed on the upper swing body side and an actuator provided on the work device extends from the upper swing body to the work device via the swing post, and at least swings. The part passing through the post is composed of a plurality of hydraulic hoses.

  In such a swing-type hydraulic excavator, the swing post swings to the left and right and each hydraulic hose also swings. Therefore, the hydraulic hose may come into contact with other members and be damaged. A plurality of hydraulic hoses are bundled together and accommodated in a hose protector (cover). (For example, patent document 1).

  In another prior art, it has also been proposed to bundle a plurality of hydraulic hoses with a fastening band. (For example, refer to Patent Document 2).

Japanese Utility Model Publication No. 63-14661 Japanese Utility Model Publication No. 7-35557

  By the way, the hose protector of the hydraulic hose according to Patent Document 1 described above has a plurality of hydraulic hoses bundled and accommodated in the hose protector, so that the hydraulic hoses rub against each other as the swing post swings. There is a problem that the outer surface is worn.

  Therefore, a method of protecting the hydraulic hoses one by one with a hose protector and protecting the hydraulic hoses with a tightening band can be considered. However, in this case, there is a problem that the fixing position of the tightening band changes due to the shift of the tightening band gradually with the swing of the swing post, and the hydraulic hose moves unintentionally.

  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 construct a bundle of a plurality of hydraulic hoses arranged around a swing post and protect each hydraulic hose. To provide a machine.

  A construction machine according to the present invention includes a lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a working device that is provided on the upper revolving body so as to be able to move up and down and is driven by a plurality of actuators. The upper swing body includes a swing frame, a swing post that is provided on a front end side of the swing frame and supports the work device so as to swing leftward and rightward, and each of the upper swing bodies provided on the upper swing body. A control valve device that controls supply and discharge of pressure oil to and from the actuator; and a plurality of hydraulic pipes that connect between the control valve device and each actuator via the swing post, The road is formed by using a flexible hydraulic hose at least at a portion that passes through the swing post, and a hose pro that covers and protects the hydraulic hose on the outer peripheral side of each hydraulic hose. It is provided with a Kuta.

  In order to solve the above-described problem, the feature of the configuration adopted by the invention of claim 1 is that the hose protector has a plurality of cylindrical bag bodies that individually cover each of the hydraulic hoses one by one. In addition, the adjacent cylindrical bag bodies are integrally formed by joining each other.

  According to a second aspect of the present invention, the hose protector is configured such that at least the tubular bag bodies are joined together at a part in the longitudinal direction, and a joining portion that bundles the tubular bag bodies together and the tubular bag bodies are joined together. This is because it is constituted by the separated non-coupled portions.

  According to a third aspect of the present invention, the cylindrical bag bodies are formed of a resin cloth, and the adjacent cylindrical bag bodies are joined together by stitching.

According to a fourth aspect of the present invention, the upper swing body is provided with a swing body side hose fixture for fixing a midway portion of each hydraulic hose extending to the swing post, and the swing post extends to the working device. A swing post side hose fixture for fixing each hydraulic hose is provided,
The hose protector is configured to cover an outer peripheral side of each hydraulic hose between the swing body side hose fixture and the swing post side hose fixture.

  According to the first aspect of the present invention, each hydraulic hose is independently covered by the cylindrical bag body, and the adjacent cylindrical bag bodies are connected to each other. Even when rocking in the direction, the outer surfaces of adjacent hydraulic hoses are not directly rubbed. As a result, each hydraulic hose can be prevented from being worn or damaged, and its durability can be enhanced. On the other hand, since each cylindrical bag body is connected to each other, a plurality of hydraulic hoses covered with each cylindrical bag body can be bundled together to increase the rigidity of the entire hydraulic hose. Can do.

  According to the second aspect of the present invention, since the coupling portion in which the cylindrical bag bodies are integrally bundled and the non-coupling portion separated from each other are provided in the longitudinal direction of the hose protector, a narrow space around the swing post is provided. A coupling portion can be provided to bundle the hydraulic hoses. In addition, since the rigidity of the entire bundled hydraulic hose is increased by integrally bundling a plurality of hydraulic hoses, unintended movement of each hydraulic hose can be suppressed and the operation of each hydraulic hose can be stabilized. Further, in the non-coupled portion, each hydraulic hose is not restrained by other hydraulic hoses, so that each hydraulic hose can move freely according to the swing of the swing post, etc. while being independently protected. Can do.

  According to the invention of claim 3, since the cylindrical bag is formed of a resin cloth, the outer surface of the hydraulic hose, the cylindrical bag, The hydraulic hose can be smoothly bent without causing large friction between the two. On the other hand, since the cylindrical bag bodies are joined together by stitching, the hose protector can be manufactured inexpensively and easily.

  According to the invention of claim 4, since each hydraulic hose is covered with the hose protector between the swing side hose fixture and the swing post side hose fixture, the swing post swings to the left and right. Protection against the behavior of the accompanying hydraulic hose can be performed.

1 is a front view showing a hydraulic excavator according to an embodiment of the present invention. It is a top view which shows an upper revolving body in the state which removed the exterior cover, the driver's seat, etc. It is a top view of the principal part expansion which shows the swing post in FIG. 2, a hose protector, a hydraulic hose, etc. in the state in which the swing post was located in the front. It is a top view of the principal part expansion which shows the swing post, the hose protector, the hydraulic hose, etc. in FIG. It is a top view of the principal part expansion which shows the swing post, the hose protector, the hydraulic hose, etc. in FIG. It is a perspective view which shows a swing post alone. It is a principal part expansion perspective view which shows the state which mounted | wore the hydraulic hose with the hose protector. It is sectional drawing which looked at each cylindrical bag body and hydraulic hose of the hose protector from the arrow VIII-VIII direction in FIG. It is sectional drawing which looked at each cylindrical bag body of a hose protector and a hydraulic hose from the arrow IX-IX direction in FIG. It is sectional drawing which looked at each cylindrical bag body of a hose protector and a hydraulic hose from the arrow XX direction in FIG. It is a perspective view which shows the hose protector by embodiment of this invention. It is sectional drawing seen from the arrow XII-XII direction in FIG. 11 which shows the combined state of each cylindrical bag body which comprises a hose protector. It is a perspective view which shows the 1st step of the manufacturing process of the hose protector in a 1st modification. It is a perspective view which shows the 2nd step of the manufacturing process of the hose protector in a 1st modification. It is a perspective view which shows the hose protector in a 1st modification. It is a perspective view which shows the hose protector in a 2nd modification. It is sectional drawing seen from the arrow XVII-XVII direction in FIG. 16 which shows the combined state of each cylindrical bag body which comprises the hose protector in a 2nd modification.

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

  In the figure, reference numeral 1 denotes a small hydraulic excavator to which the present embodiment is applied. The hydraulic excavator 1 is mounted on a self-propelled track-type lower traveling body 2 and turnable on the lower traveling body 2. The upper revolving unit 3 and the working device 4 for excavation work provided on the front side of the upper revolving unit 3 are roughly configured.

  Here, the working device 4 includes a boom 4A attached to a swing post 13 (described later) so as to be able to move up and down, an arm 4B attached to the tip of the boom 4A so as to be able to move up and down, and a tip of the arm 4B. The bucket 4C is pivotally attached to the bucket 4C. A boom cylinder 4D is provided between the swing post 13 and the boom 4A, an arm cylinder 4E is provided between the boom 4A and the arm 4B, and a bucket cylinder 4F is provided between the arm 4B and the bucket 4C. Is provided. Further, a work device side pipe 32C, which will be described later, is fixedly provided on the back surface of the boom 4A.

  Reference numeral 5 denotes a revolving frame constituting the base of the upper revolving structure 3. The revolving frame 5 has a substantially circular shape when viewed from above as shown in FIG. 2, and includes a center frame 6 described later, left and right side frames 11, 12 is roughly constituted.

  Reference numeral 6 denotes a center frame located in the center of the left and right directions and extending in the front and rear directions. The center frame 6 includes a bottom plate 7, a left vertical plate 8, a right vertical plate 9, an upper plate 10 and the like which will be described later. Has been.

  Reference numeral 7 denotes a bottom plate of the center frame 6. The bottom plate 7 is formed of a thick steel plate or the like in a flat plate shape extending in the front and rear directions. The front end side of the bottom plate 7 has a triangular shape, and a boss portion (not shown) into which a connecting pin 22 described later is inserted is provided on the front end side of the bottom plate 7.

  Reference numeral 8 denotes a left vertical plate standing on the left end side of the bottom plate 7, and 9 denotes a right vertical plate standing on the right end side of the bottom plate 7 facing the left vertical plate 8. The left vertical plate 8 and the right vertical plate 9 extend in the front and rear directions on the bottom plate 7 while facing in the left and right directions. Further, the left vertical plate 8 and the right vertical plate 9 are arranged in a letter C shape when viewed from above so that the interval between the left vertical plate 8 and the right vertical plate 9 gradually decreases from the rear toward the front.

  10 is an upper plate provided on the front side of the left and right vertical plates 8 and 9 so as to face the bottom plate 7 in the upper and lower directions, and the upper plate 10 is formed in a substantially triangular flat plate shape, The left and right vertical plates 8 and 9 are fixed to the upper end side by welding or the like. A stepped cylindrical boss portion (not shown) into which the connecting pin 22 is inserted is provided on the front end side of the upper plate 10.

  Here, the above-described bottom plate 7, left vertical plate 8, right vertical plate 9, and top plate 10 constitute a strength member that increases the strength of the revolving frame 5. Thus, the working device 4 can be reliably supported by the turning frame 5.

  Reference numeral 11 denotes a left side frame disposed on the left side of the center frame 6. The left side frame 11 is formed, for example, by bending a rectangular cylinder having a rectangular cross-sectional shape into an arc shape. The left side frame 11 has a distal end portion joined to the upper surface of the bottom plate 7 and the outer side surface of the left vertical plate 8, and a front and rear intermediate portion projecting leftward from the left vertical plate 8. (Not shown) and the rear end extends to the vicinity of a counterweight 25 described later.

  Reference numeral 12 denotes a right side frame disposed on the right side of the center frame 6, and the right side frame 12 is formed by, for example, bending a rectangular tube having a rectangular cross-sectional shape into an arc shape. The right side frame 12 has a distal end portion joined to the upper surface of the bottom plate 7 and the outer side surface of the right vertical plate 9, and an intermediate beam in the front and rear directions projecting rightward from the right vertical plate 9. (Not shown) and the rear end extends to the vicinity of a counterweight 25 described later.

  A swing post 13 is swingably provided on the front end side of the swivel frame 5 using a connecting pin 22 which will be described later. The swing post 13 is integrally formed by casting or the like, for example. Is supported to be swingable. The swing post 13 is formed by bending a U-shape so as to sandwich the front end portions of the bottom plate 7 and the upper plate 10 from above and below, and extends upward and downward, and the rear plate 14 The left side plate 15 and the right side plate 16 are provided so as to protrude forward while facing each other on the left and right sides, and the cylinder bracket 17 is provided so as to protrude rightward from the right side plate 16.

  Here, an upper surface portion 14A and a bottom surface portion 14B extending horizontally rearward are provided on both upper and lower ends of the rear surface plate 14, and the boss portions of the bottom plate 7 are provided on the upper surface portion 14A and the bottom surface portion 14B. Pin insertion holes 14A1 and 14B1 into which the connection pins 22 are inserted are formed so as to be coaxial with the bosses (not shown) of the upper plate 10 (not shown).

  Further, a boom boss 15A, which is pin-coupled to the base end side of the boom 4A constituting the work device 4, is projected outwardly on the upper end side of the left side plate 15, and the work device is provided on the lower end side of the left side plate 15. A boom cylinder boss 15B, which is pin-coupled to the base end side of the boom cylinder 4D constituting the base 4, projects inward, and a screw seat 15C for attaching a hose clamp 20 to be described later is provided on the inner surface of the left side plate 15. It is fixed.

  On the other hand, like the left side plate 15, the right side plate 16 is provided with a boom boss 16A protruding outward and a boom cylinder boss 16B protruding inward. A screw seat 16C is fixed to a position corresponding to the screw seat 15C.

  Reference numeral 18 denotes a hose housing space provided in the swing post 13, and the hose housing space 18 is constituted by a space surrounded by the rear plate 14 and the left and right side plates 15 and 16. The hose accommodating space 18 accommodates a hydraulic hose 32B, which will be described later. As shown in FIGS. 3 to 5, when the swing post 13 swings left and right and the hydraulic hose 32B is slackened. The hydraulic hose 32B is formed with a space that allows the slack of the hydraulic hose 32B.

  Reference numeral 19 denotes a hose insertion hole formed at a corner where the left side plate 15 and the rear plate 14 intersect, and the hose insertion hole 19 extends from a revolving unit side hose fixture 33 provided in the upper revolving unit 3 described later. This is for inserting the hose 32 </ b> B into the hose accommodating space 18. Thereby, when swinging the swing post 13, each hydraulic hose 32 </ b> B can be prevented from contacting the corner of the swing post 13 where the left side plate 15 and the rear side plate 14 meet.

  Reference numeral 20 denotes a hose clamp as a swing post side hose fixture provided in the hose accommodating space 18 of the swing post 13. The hose clamp 20 includes, for example, two clamps formed with a plurality of semicircular grooves. It is comprised by the division bodies 20A and 20B. The hose clamp 20 has a screw seat 15C fixed to the side plates 15 and 16 of the swing post 13 in a state where the hydraulic hoses 32B are bound by sandwiching the hydraulic hoses 32B between the clamp divided bodies 20A and 20B. , 16C are fixed using bolts.

  Reference numeral 21 denotes a hose protection cover provided in the hose accommodating space 18 of the swing post 13. The hose protection cover 21 is formed by bending a thin steel plate or the like, for example, and faces the rear plate 14 of the swing post 13. However, it extends upward and downward.

  The hose protection cover 21 is attached to the rear plate 14 or the like of the swing post 13 by using bolts, thereby covering the hydraulic hose 32B accommodated in the hose accommodation space 18, and accommodating the hose of the swing post 13 during excavation work. The hydraulic hose 32 </ b> B is protected from earth and sand that enter the space 18.

  Reference numeral 22 denotes a connecting pin that connects the swing frame 5 and the swing post 13 so as to be swingable. The connecting pin 22 is constituted by a single pin extending upward and downward, and the rear plate constituting the swing post 13. The pin insertion holes 14 </ b> A <b> 1 and 14 </ b> B <b> 1, the boss portion of the bottom plate 7 that constitutes the turning frame 5, and the boss portion (not shown) of the upper plate 10 are inserted. Accordingly, the swing post 13 can swing left and right with the connecting pin 22 as a fulcrum.

  23 is a swing cylinder provided between the swing frame 5 and the swing post 13, and the swing cylinder 23 extends forward and rearward along the outer surface of the right vertical plate 9, and the bottom side is the right vertical plate 9 and the like. The rod side is pin-coupled to the cylinder bracket 17 of the swing post 13. Therefore, by extending and retracting the swing cylinder 23, the swing post 13 is configured to swing left and right around the connecting pin 22 together with the work device 4.

  Reference numeral 24 denotes a swing motor disposed in the center of the bottom plate 7 between the left and right vertical plates 8 and 9 constituting the center frame 6, and the swing motor 24 is supplied and discharged from a hydraulic pump 27 described later. The swivel frame 5 is swung on the lower traveling body 2 by being driven by the pressurized oil.

  Reference numeral 25 denotes a counterweight attached to the rear end of the revolving frame 5. The counterweight 25 is formed in an arc shape that is smoothly and continuously connected to the left side frame 11 and the right side frame 12. It is a balance.

  Reference numeral 26 denotes an engine mounted on the revolving frame 5 at the front side of the counterweight 25. The engine 26 is disposed in a horizontally placed state extending in the left and right directions. A hydraulic pump 27 driven by the engine 26 is disposed on the left side of the engine 26, and a radiator 28 that cools the cooling water of the engine 26 is disposed on the right side of the engine 26.

  A hydraulic oil tank 29 is located on the front side of the radiator 28 and is mounted on the revolving frame 5. The hydraulic oil tank 29 is disposed on the right side (outside) of the right vertical plate 9 constituting the revolving frame 5, The hydraulic oil supplied and discharged to actuators such as the cylinders 4D, 4E, 4F, the swing cylinder 23, the swing motor 24, and the travel motor (not shown) of the device 4 is stored.

  A fuel tank 30 is located on the front side of the hydraulic oil tank 29 and mounted on the revolving frame 5. The fuel tank 30 is disposed on the right side (outside) of the right vertical plate 9 constituting the revolving frame 5, and The fuel supplied to 26 is stored.

  31 is a control valve device disposed on the left side of the front part of the swivel frame 5, and the control valve device 31 is arranged in parallel in the front and rear directions along the left side surface (outer side surface) of the left vertical plate 8. It is configured as an assembly of individual directional control valves.

  Here, the inlet of the control valve device 31 is connected to the discharge port of the hydraulic pump 27 via a hydraulic hose or the like (both not shown), and is connected to the discharge port of each directional control valve constituting the control valve device 31. Is connected to a proximal end side of a hydraulic line 32 to be described later. The control valve device 31 switches the supply and discharge of pressure oil to the actuators such as the cylinders 4D, 4E, 4F, the swing cylinder 23, the swing motor 24, and the travel motor (not shown) of the work device 4, It controls the operation.

  Reference numeral 32 denotes a plurality of hydraulic lines extending from the control valve device 31 to the cylinders 4D, 4E, 4F of the work device 4 via the swing post 13. The hydraulic line 32 includes two hydraulic lines for supplying and discharging pressure oil to and from the boom cylinder 4D, two hydraulic lines for supplying and discharging pressure oil to and from the arm cylinder 4E, and a bucket cylinder 4F. In addition to the two hydraulic lines for supplying and discharging pressure oil to, for example, two hydraulic lines for supplying and discharging pressure oil to an attached hydraulic device (not shown) such as a rock drill It is composed of a total of 8 hydraulic pipelines.

  Here, each hydraulic pipe line 32 is formed using a steel pipe or the like, and a revolving body side pipe line 32A having a proximal end side connected to the control valve device 31 and a distal end side connected to a revolving body side hose fixture 33 described later. The proximal end side is connected to the distal end side of the swing body side pipe line 32A via the swing body side hose fixture 33, and the distal end side is led out to the back side of the boom 4A via the hose accommodating space 18 of the swing post 13. A working device that is formed using a flexible hydraulic hose 32B and a steel pipe or the like, the proximal end side being connected to the distal end side of the hydraulic hose 32B, and the distal end side being connected to each cylinder 4D, 4E, 4F of the working device 4. It is comprised by the side pipe line 32C (refer FIG. 1).

  Reference numeral 33 denotes a revolving body side hose fixture provided on the front end side of the revolving frame 5 and positioned on the front side of the control valve device 31. The revolving body side hose fixture 33 is made of a steel plate or the like bent into a substantially L shape. For example, it is fixed to the outer surface of the left vertical plate 8 by welding or the like. The swivel-side hose fixture 33 is provided with, for example, eight pipe joints that are male threaded portions at both axial ends, and the distal end side of the swivel-side pipe line 32A is screwed to one end of the pipe joint. The revolving body side pipe line 32A and the hydraulic hose 32B are connected to each other by screwing the base end side of the hydraulic hose 32B to the other end side.

  Next, the hose protector used in the present embodiment for protecting each hydraulic hose 32B will be described with reference to FIGS.

  Reference numeral 34 denotes a hose protector that covers and protects each hydraulic hose 32B constituting the hydraulic pipe line 32 from the outer peripheral side. The hose protector 34 is formed of a resin cloth and covers the outer peripheral side of each hydraulic hose 32B disposed between the revolving body side hose fixture 33 and the hose clamp 20 so that each hydraulic hose 32B can be swung post. The outer peripheral surface of each hydraulic hose 32B is prevented from being damaged by contact with 13 or the like or rubbing against each other.

  First, the hose protector 34 is configured as an integrated body in which eight cylindrical bag bodies 35 are partially coupled, and each cylindrical bag body 35 has a space in which one hydraulic hose 32B can be accommodated. It is formed as a substantially cylindrical shape provided.

  In this case, as shown in FIGS. 11 and 12, each cylindrical bag 35 accommodates one hydraulic hose 32B inside by overlapping both ends of one rectangular cloth and stitching with a thread 36. It is formed in a cylindrical shape that can be. Then, in a state where one end side in the length direction of the eight cylindrical bag bodies 35 is arranged in 2 rows × 4 rows, portions where the respective cylindrical bag bodies 35 are in contact with each other are stitched together with a thread 37 and coupled. On the other hand, the other end side in the length direction of the eight cylindrical bag bodies 35 is separated as a free end without being coupled to each other.

  Thereby, one end side in the length direction of the hose protector 34 becomes a coupling portion 34A in which the adjacent cylindrical bag bodies 35 are joined together, and the other end side in the length direction of the hose protector 34 is each cylindrical bag body. The non-coupled portions 34B are separated so that 35 can be displaced independently of each other. And as shown in FIG. 8, the arrangement | sequence of each cylindrical bag 35 in the connection part 34A of the hose protector 34 is the arrangement | sequence of the revolving body side pipe line 32A and the hydraulic hose 32B which are connected by the revolving body side hose fixture 33. Each cylindrical bag body 35 that matches and covers the proximal end side of the hydraulic hose 32B is bound as a coupling portion 34A. On the other hand, the cylindrical bag bodies 35 covering the distal end side of the hydraulic hose 32B are separated from each other as a non-bonding portion 34B, and correspond to the arrangement of the hydraulic hoses 32B clamped to the hose clamp 20 as shown in FIG. Then, it is arranged in a horizontal row.

  As described above, the hose protector 34 protects the hydraulic hoses 32B by suppressing the friction between the hydraulic hoses 32B by individually covering the hydraulic hoses 32B one by one with the cylindrical bag bodies 35. It is the structure which suppresses dispersion | variation.

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration. Next, the operation when the side groove digging work is performed using the working device 4 and the movement of the hydraulic hose 32B at this time will be described.

  First, when the working device 4 is moved to the left side to perform the side grooving work, the swing post 23 is swung to the right by the swing cylinder 23 and the upper swing body 3 is moved to the side opposite to the swinging direction of the working device 4. By turning, the working device 4 is translated to the left side, and the working device 4 is used to perform a side ditching operation.

  On the other hand, when the working device 4 is moved to the right side to perform the side groove digging operation, the swing post 23 is swung to the left by the swing cylinder 23 and the upper swing body 3 is moved to the opposite side of the swinging direction of the working device 4. By turning, the working device 4 is translated to the right side, and the working device 4 is used to perform a side ditching operation.

  Here, when the swing post 13 is swung left and right, each hydraulic hose 32B behaves as shown in FIGS. At this time, each hydraulic hose 32B may come into contact with other members or be damaged by rubbing between the hydraulic hoses 32B. However, in the present embodiment, each hydraulic hose 32B is individually covered by the cylindrical bag body 35 and the adjacent ones of the cylindrical bag bodies 35 are connected to each other. Even when swinging left and right, the outer surfaces of the adjacent hydraulic hoses 32B are not directly rubbed. As a result, each hydraulic hose 32B can be prevented from being worn or damaged, and its durability can be enhanced.

  On the other hand, since each cylindrical bag body 35 is connected to each other, a plurality of hydraulic hoses 32B covered with each cylindrical bag body 35 can be bundled together. In addition, the hose protector 34 has a coupling portion 34A in which the cylindrical bag bodies 35 are bundled together and a non-coupling portion 34B in which the cylindrical bag bodies 35 are separated from each other. Thereby, each hydraulic hose 32B can bundle the hydraulic hose 32B by providing the coupling portion 34A in a narrow space around the swing post 13. In addition, since a plurality of hydraulic hoses 32B are integrally bundled, the overall rigidity of the bundled hydraulic hoses 32B is increased, so that unintended movement of each hydraulic hose 32B is suppressed and the operation of each hydraulic hose is stabilized. be able to. Further, in the non-coupling portion 34B, each hydraulic hose 32B is not restrained by the other hydraulic hose 32B, so that each hydraulic hose 32B is protected independently according to the swing of the swing post 13 or the like. You can move freely.

  Next, FIGS. 13 to 15 show a first modification of the hose protector. The hose protector 41 according to the first modification is formed by connecting a plurality of cylindrical bag bodies 42 over the entire length in the longitudinal direction.

  The state shown in FIG. 13 shows the first stage of the manufacturing process of the hose protector 41, in which both ends of one rectangular cloth are overlapped and stitched in the longitudinal direction. In this state, the hose protector 41 is formed as a large-diameter substantially cylindrical bag body 41 '.

  The state of FIG. 14 shows the second stage of the manufacturing process, and the position corresponding to the diameter D of the cylindrical bag body 42 that can accommodate the hydraulic hose 32B from one end side of the large-diameter cylindrical bag body 41 ′, The thread 43 is sutured over the entire length in the longitudinal direction. By sequentially repeating this operation, as shown in FIG. 15, a hose protector 41 in which a plurality of cylindrical bag bodies 42 are coupled over the entire length in the longitudinal direction can be formed. In this hose protector 41, since each cylindrical bag body 42 is divided and formed from one piece of cloth, compared to the case where the cylindrical bag bodies are separately manufactured and then combined with each cylindrical bag body. Thus, the manufacturing process can be reduced, and the hose protector 41 can be manufactured efficiently.

  Next, FIGS. 16 and 17 show a second modification of the hose protector. The hose protector 51 according to the second modification is formed by integrating a plurality of cylindrical bag bodies 52 in an annular shape.

  Here, each cylindrical bag body 52 constituting the hose protector 51 has a bowl-shaped cross-sectional shape in which one end side in the radial direction is an arc portion 52A and the other end side is a sharpened portion 52B. The body 52 is configured to accommodate the hydraulic hose 32B. And in the state which arranged each cylindrical bag body 52 cyclically | annularly centering on the acute part 52B, each sharp part 52B of each of these cylindrical bag bodies 52 is stitched | sutured with the thread | yarn 53, and the length of each cylindrical bag body 52 is shown. One end side of the direction is combined. In this hose protector 51, each cylindrical bag body 52 is adjacently centered around the sharpened portion 52B of each cylindrical bag body 52, and the sharpened portion 52B is sewn with one thread 53. The cylindrical bag bodies 52 can be joined together and the hose protector 51 can be manufactured efficiently.

  In the present embodiment, the control valve device 31 and the actuator of the work device 4 are connected by eight hydraulic pipes 32, and the eight hydraulic hoses 32B constituting each of the hydraulic pipes 32 are hose. The case where it covers with the protector 34 is illustrated. However, the present invention is not limited to this. For example, six or ten or more hydraulic hoses may be covered with a hose protector.

1 Excavator (construction machine)
2 Lower traveling body 3 Upper revolving body 4 Working device 5 Revolving frame 13 Swing post 20 Hose clamp (swing post side hose fixture)
31 Control valve device 32 Hydraulic line 32A Revolving body side line 32B Hydraulic hose 32C Working apparatus side line 33 Revolving body side hose fixture 34, 41, 51 Hose protector 34A Coupling part 34B Non-coupling part 35, 42, 52 Cylindrical bag Body 36, 37, 43, 53 thread

Claims (4)

A lower traveling body, an upper revolving body mounted on the lower traveling body so as to be capable of swiveling, and a working device provided on the upper revolving body so as to be able to be lifted and lowered and driven by a plurality of actuators,
The upper swing body includes a swing frame, a swing post that is provided on a front end side of the swing frame and supports the work device so as to be swingable leftward and rightward, and a pressure that is provided on the upper swing body and that is applied to each actuator. A control valve device that controls the supply and discharge of oil, and a plurality of hydraulic conduits that connect between the control valve device and each of the actuators via the swing post, each of the hydraulic conduits, In a construction machine in which at least a portion passing through the swing post is formed using a flexible hydraulic hose, and a hose protector that covers and protects the hydraulic hose is provided on the outer peripheral side of each hydraulic hose. ,
The hose protector has a plurality of cylindrical bag bodies that individually cover each of the hydraulic hoses one by one, and the adjacent ones of the cylindrical bag bodies are integrally formed with each other. A featured construction machine.   The hose protector includes at least a part of the cylindrical bag bodies that are joined in a part in the longitudinal direction, and a joint part that bundles the tubular bag bodies together, and a non-joint part that separates the cylindrical bag bodies from each other. The construction machine according to claim 1, comprising:   The construction machine according to claim 1 or 2, wherein each cylindrical bag is formed of a resin cloth, and adjacent cylindrical bags are joined together by stitching. The upper swing body is provided with a swing body side hose fixture for fixing a midway portion of each hydraulic hose extending to the swing post,
The swing post is provided with a swing post side hose fixture for fixing each hydraulic hose extending to the working device,
The construction machine according to claim 1, 2 or 3, wherein the hose protector is configured to cover an outer peripheral side of each of the hydraulic hoses between the swing body side hose fixture and the swing post side hose fixture.

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