JP2000064334A - Oil pressure piping setting structure of construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress excessive length necessary for oil pressure piping extended along a movable part to the minimum and prevent it from protruding from the outer face of a working mechanism in the working mechanism of a construction machine. SOLUTION: In an upper boom 30U, oil pressure piping 35 connected to a bucket hydraulic cylinder passes through the part of the end face of a connection pin 33 from the upper face, and since it always passes through the end face of a connection pin 33 when it extends on the upper face of an arm 31 from the inside of a stay 32, the oil pressure piping 35 is inserted in a piping holding member 42 provided to be fixed on a clamp plate body 41. The clamp plate body 41 is fixed by being screwed and inserted in a screw hole 33a provided on the end face of the connection pin 33 by a fixing bolt 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a hydraulic excavator, in which a hydraulic actuator such as a hydraulic cylinder provided in a working mechanism such as a front working mechanism is provided with a hydraulic pipe at a predetermined position at a midway position thereof. The present invention relates to a hydraulic pipe routing structure that is designed to be routed.

[0002]

2. Description of the Related Art A hydraulic excavator as an example of a construction machine has an upper revolving structure rotatably installed on a lower traveling structure. The upper revolving structure has a working mechanism such as a front work for excavating earth and sand. It is generally constructed by mounting the mechanism. The work performed by this hydraulic excavator is, for example, gutter digging.In order to perform this gutter digging, an offset type front work mechanism is not provided or the front work mechanism is not directly connected to the upper swing body. There is a structure in which an angle can be adjusted with respect to an upper revolving structure via a swing post, and there is also a structure in which an offset type front working mechanism is attached to the swing post.

Therefore, FIG. 10 shows the construction of a hydraulic excavator having an offset type front working mechanism. In the figure, reference numeral 1 denotes a lower traveling body provided with a pair of right and left crawler type traveling units 2, and the lower traveling body 1 has a turning device 3
The upper revolving structure 4 is installed so as to be rotatable via the. An operator's cab 5 is installed on the upper revolving structure 4 for an operator to board and operate the entire machine, and a front working mechanism 6 is mounted as a working mechanism thereof. A blade 7 as one of the working mechanisms is also mounted on the lower traveling body 1 side.

The front working mechanism 6 includes a boom 10 provided on a mounting bracket 8 provided on the revolving frame 4a of the upper revolving structure 4 so as to be able to lift and lower, and an arm connected to the tip of the boom 10 so as to be vertically rotatable. 11 and a bucket 12 is connected to the tip of the arm 11 via a link mechanism 13 so as to be rotatable in the vertical direction, and the bucket 12 functions as a front attachment for excavating earth and sand. As a front attachment, another mechanism such as a crusher can be replaced with the bucket 12 and mounted.

The front working mechanism 6 is shown in FIG.
As shown in FIG. 1, the arm 11 that connects the buckets 12
Is configured so that it can be shifted from the center position shown by the solid line to the left and right offset positions shown by the virtual line. As a result, the bucket 12 can be displaced from the extension direction in the vicinity of the center position of the upper swing body 4 to the position on the extension line in the vicinity of the left and right side portions. For example, while the vehicle is traveling, the bucket 12 is moved along the side portion of the road. Therefore, the side groove can be formed smoothly and easily.

In order to give the front working mechanism 6 an offset function, the boom 10 is divided into two parts, a lower boom 10L and an upper boom 10U. Lower boom 10
L is connected to the mounting bracket 8 by a connecting pin 14 so as to be relatively rotatable, and the lower boom 10L and the upper boom 10U are also connected by a connecting pin 15 so as to be relatively rotatable. Here, in the connection pin 14 and the connection pin 15,
The axes are orthogonal to each other. That is, the connecting pin 14 between the lower boom 10L and the mounting bracket 8
Is arranged so that its central axis is oriented in the horizontal direction, and the connecting pin 15 between the lower boom 10L and the upper boom 10U is
Is mounted so that its central axis is oriented vertically. Further, the tip of the upper boom 10U is not directly connected to the arm 11, but is connected to the stay 16 so as to be relatively rotatable using the connecting pin 17, and the other end of the stay 16 is connected to the arm 11 by the connecting pin 18. It is rotatably connected. The central axis of the connecting pin 17 is the connecting pin 15
And the central axis of the connecting pin 18 is in the same direction as the connecting pin 14.

With this structure, the upper boom 10U is pivotally displaced so as to swing left and right with respect to the lower boom 10L and the stay 16, and even if the upper boom 10U is tilted in the horizontal direction, the arm 1
1 can be rotated vertically with respect to the boom 10 as a whole. Then, regardless of the angle of the upper boom 10U with respect to the lower boom 10L, the lower boom 1
In order to make the axes of 0L and the arm 11 parallel (or straight), the lower boom 10L and the arm 11
Brackets 19 and 20 are provided on the side surfaces of the link rods 21, and a link rod 21 is pivotally mounted between the brackets 19 and 20. As a result, the upper boom 10L and the link rod 2
1 and 1 form a parallelogram link. In FIG. 10, reference numeral 22 is a connecting pin for rotatably connecting the bucket 12 to the tip of the arm 11.

The lower boom 10L is provided with a boom hydraulic cylinder 23 for vertically moving the lower bracket 10L with respect to a mounting bracket 8 provided on the revolving frame 4a of the upper revolving structure 4 so as to raise and lower the boom 10. Further, between the lower boom 10L and the upper boom 10U, an offset hydraulic cylinder 2 for tilting the upper boom 10U left and right to offset the arm 11 with respect to the boom 10.
4 are provided. Further, the stay 16 has a boom 10
On the other hand, an arm hydraulic cylinder 25 for rotating the arm 11 in the vertical direction is provided. Further, a bucket hydraulic cylinder 26 for rotating the bucket 12 in the vertical direction is provided between the arm 11 and the link mechanism 13 provided on the bucket 12. Each of these hydraulic cylinders 23 to 26 has a pair of hydraulic pipes in the rod chamber and the bottom chamber (the hydraulic pipes are collectively referred to as 2 pipes).
7 is used) is connected. Although not shown, the hydraulic pipe 27 is selectively connected to a hydraulic pump or a hydraulic oil tank via a control valve provided in the machine chamber cover 9 installed in the upper swing body 4.

A hydraulic pipe 27 extending from the upper swing body 4
Are routed along each part of the front working mechanism 6. For example, the pair of hydraulic pipes connected to the bucket hydraulic cylinder 26 located at the most tip is the lower boom 10.
L, the upper boom 10U, the stay 16 and the arm 11 are pulled around. These are movable members that move in a predetermined direction during work, and the directions of movement thereof are vertical rotation and horizontal rotation about the connecting pin, respectively. Therefore, the bucket hydraulic cylinder 26
All of the hydraulic pipes 27, including the hydraulic pipes to, are constructed of flexible hydraulic pipes because they are drawn along these movable members. Then, in order to stably hold the hydraulic pipe 27, the lower boom 10L, the upper boom 10U, the stay 16 and the arm 11 are fixedly held by clamp members 28 at appropriate positions on the outer surfaces thereof. For example, as shown in FIG. 11, the upper boom 10U of the hydraulic pipe 27 to the hydraulic cylinder 26 for buckets.
As a structure for routing to a portion of the arm 11 connected with the stay 16 via a stay 16, a clamp member 28 is provided on a side surface near the tip of the upper boom and a side surface near a connection position of the arm 11 with the stay 16. Generally, the hydraulic pipes 27 are fixed, respectively, and the space between them is set to a free state.

A space between the upper boom 10U and the stay 16 is to rotate in the left-right direction around the connecting pin 17, and a space between the stay 16 and the arm 11 is a connecting pin 18.
It rotates in the up-and-down direction around. Therefore,
Arm 1 from upper boom 10U via stay 16
Since the transition portion to 1 rotates in multiple directions, the transition portion of the hydraulic pipe 27 to this portion needs to have a predetermined extra length. Here, the extra length means the upper boom 10
From the shortest straight line distance in the routing route from U to the arm 16 to the arm 11, relative rotation between them occurs around the connecting pins 17 and 18,
The length is equivalent to an extra distance required for the hydraulic pipe 27 to follow the turning motion and to wrap around in a predetermined direction.

Moreover, although the hydraulic pipe 27 is constituted by a hydraulic pipe, since the high pressure hydraulic oil from the hydraulic pump flows inside, the hydraulic pipe 27 itself has a considerably high rigidity, and the high pressure inside the hydraulic pipe 27 is high. When the oil flows, the rigidity of the hydraulic pipe 27 becomes higher. Therefore, if the hydraulic pipe 27 is bent too sharply between the front and rear clamp members 28, there is a problem that the hydraulic pipe 27 may be damaged such as buckling. Therefore, the mounting position of the clamp member 28 is arranged at a position separated from the stay 16 connecting the upper boom 10U and the arm 11 to some extent, and is bent smoothly during operation.
The extra length in the meantime becomes extremely long. In particular, between the upper boom and the stay, the shortest distance is the non-offset position where the lower boom 10L and the upper boom 10U are aligned with each other, and in order to offset them to the left and right, a predetermined extra length is required to the left and right. However, hydraulic piping 2
Since 7 bends substantially only in one direction, the left or right offset position is used as a reference, and a necessary extra length is provided when the offset position is on the opposite side from that position.

[0012]

The extra length of the hydraulic pipe becomes extremely long in a region where the movement in the left-right and up-down directions is large, such as between the upper boom and the arm described above. Therefore, the maximum length of the hydraulic piping is maximized when the route for routing the hydraulic piping between the upper boom and the arm is shortest, and this extra length is greatly extended outward from the outer surface of the upper boom and stay, and also the arm. Like When excavating the side of the road, such as gutter digging work, there are places where buildings and other structures are in the immediate vicinity, and if the front work mechanism is operated in such a place, There is a problem in that the hydraulic piping that projects greatly toward one side collides with a structure or the like, and damages the hydraulic piping and the colliding object.

The present invention has been made in view of the above points, and an object of the present invention is to minimize the extra length required for a hydraulic pipe extending along a movable portion of a working mechanism. Then, it is possible to suppress the protrusion from the outer surface of the working mechanism.

[0014]

In order to achieve the above-mentioned object, the present invention enables a plurality of movable members, which are provided in a traveling vehicle and are respectively driven by hydraulic actuators, to be relatively rotatable via connecting pins. A construction machine comprising a connected working mechanism and a plurality of flexible pipes, extending along each of the movable members, and hydraulic pipes connected to each of the hydraulic actuators. The pipe is configured to pass through the end face side of any one of the connecting pins, and a position restricting member for holding the hydraulic pipe is provided at a portion on the end face side of the connecting pin.

More specifically, a traveling vehicle constituting a construction machine has a structure in which an upper revolving structure is rotatably connected to a lower traveling structure, and each upper revolving structure is provided with a hydraulic actuator. A working mechanism in which a plurality of driven movable members are connected to each other via a connecting pin so as to be relatively rotatable is mounted. In such a configuration, hydraulic pipes composed of a plurality of flexible pipes extending from the upper revolving structure are extended along the respective movable members and connected to the respective hydraulic actuators. At least the position regulating member is provided on the end face of the connecting pin provided at the connecting portion at the portion having the largest relative rotation angle or in the vicinity thereof, and the position regulating member holds the hydraulic pipe.

Here, the working mechanism includes a boom connected to an upper revolving structure so as to be able to move up and down, an arm connected to the tip of the boom so as to be vertically rotatable, and a vertical movement to the end of the arm. The boom is composed of a front attachment that is rotatably connected in a direction, and a boom that is rotatably connected to a lower boom that is connected to the upper swing body and an upper boom that is connected to an arm via a stay. There is one configured as a so-called offset type front working mechanism, and one provided with a swing post for supporting the boom so as to be rotatable in a horizontal direction at a predetermined angle. In this configuration, as the position showing the largest movement, for example, a connecting pin provided at the connecting portion between the upper boom and the stay,
The position restricting member of the hydraulic pipe is attached to the connecting pin or the like provided at other portions. Of course, a position restricting member can be provided at a portion having a smaller movement, for example, a connecting portion between the lower boom and the upper boom, a connecting portion between the lower boom and the upper swing body, and the like. The swing post may be attached to the connecting pin of the swing post. Further, in addition to the front working mechanism, a working mechanism called a blade is provided on the lower traveling body, for example, but since this blade is driven up and down by a hydraulic cylinder, the hydraulic piping to the hydraulic cylinder for the blade is also required. It is also possible to hold it by a similar position regulating member.

As a concrete constitution of the position regulating member, for example, a pipe holding member made of an elastic member is fixedly provided on a clamp plate body, and the clamp plate body is detachably fixed to an end face of the connecting pin by a fixing screw. The fixing screw can be screwed into the end face of the connecting pin to compress the pipe holding member by the end face and the clamp plate body, thereby fixing the hydraulic pipe. Further, as another specific example of the position restricting member, a pipe clamp unit composed of a pipe holding member made of an elastic member having a hydraulic pipe inserted therethrough, and a pair of clamp plates holding the pipe holding member, and the pipe holding unit. The clamp unit may be configured to include at least a supporting rod that is inserted rotatably around an axis, and the supporting rod may be fixed to the end surface of the connecting pin. Further, the mounting position of the position restricting member is not limited to the end face of the connecting pin, but a position in the vicinity thereof, for example, when a rotating member for the connecting pin is provided, should be attached to this rotating member. Is also possible.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. First, FIG. 1 and FIG.
The structure of the connecting part of the upper boom 30U and the arm 31 in the boom 30 in the offset type front working mechanism is shown in FIG. The upper boom 30U and the arm 31 are connected to each other via a stay 32.
Connection pin 3 mounted vertically between U and stay 32
3 and the stay 32 and the arm 31 are rotatably connected to each other via a connecting pin 34 mounted in the horizontal direction. Therefore, the upper boom 30U
The front working mechanism can be offset to the left and right by a predetermined amount by horizontally tilting the lower boom (not shown) with respect to the lower boom in a horizontal direction. Absent.

Reference numeral 35 denotes a hydraulic cylinder 36 for a bucket.
In the upper boom 30U, the pair of hydraulic pipes 35 are connected from the upper surface of the upper boom 30U to the end surface of the connecting pin 33 and extend from the stay 32 to the upper surface of the arm 31. . Here, a rotation stop plate 37 is provided on the end surface of the connecting pin 33, and the rotation stop plate 37 is fixed to the upper surface of the stay 32 by a stopper 38. Therefore, the connecting pin 33 is held in a non-rotating state with respect to the stay 32, and the upper boom 30U rotates about the axis of the connecting pin 33.

In the routing path of the hydraulic pipe 35 described above, the position is regulated so as to always pass on the end face of the connecting pin 33. As a positioning member for the hydraulic pipe 35, as shown in FIGS. 3 and 4, the clamping means 40 is attached to the connecting pin 33. The clamp means 40 includes a clamp plate body 41, a pipe holding member 42, and a fixing bolt 43, and the clamp plate body 4
Reference numeral 1 denotes left and right bent portions 41a, 41a and a connecting portion 4 between them.
1b and a plate body that is bent in a substantially U shape. Further, the pipe holding member 42 is a rectangular block-shaped member made of an elastic member such as rubber, and an insertion passage 42a is formed so as to penetrate the central portion thereof.
A hydraulic pipe 35 is inserted through 2a. Further, a cutout portion 42b is formed from the insertion passage 42a to the lower end portion, and the hydraulic pipe 35 can be attached to and detached from the insertion passage 42a by expanding the cutout portion 42b.

The hydraulic pipe 35 is connected to the bucket hydraulic cylinder 36, and therefore the clamping means 4 is used.
It is necessary to pass two hydraulic pipes 35 to 0. The two pipe holding members 42 are fixed to each other over a wide range from the left and right bent portions 41a of the clamp plate 41 to the contact portion with the connecting portion 41b by using an adhesive means or the like. The left and right pipe holding members 42 are separated by a predetermined distance, and a through hole 41c is bored in the central portion of the connecting portion 41b of the clamp plate 41 between the two pipe holding members 42. A screw hole 33a is provided in the end surface of the connecting pin 33, and the fixing bolt 43 is inserted from the through hole 41c of the clamp plate 41 and screwed into the screw hole 33a provided in the connecting pin 33 to obtain the clamping means. 40 is fixed to the end surface of the connecting pin 33. Moreover, when the fixing bolt 43 is strongly tightened in the screw hole 33a, the clamp plate body 41 is pushed toward the connecting pin 33 side, so that the pipe holding member 42 is compressed and the hydraulic pressure applied to the insertion passage 42a is compressed. The pipe 35 comes to be fixed.

By configuring as described above, FIG.
As shown in FIG. 6, even when the upper boom 30U and the stay 32 are aligned with each other, as shown in FIGS. The clamped hydraulic pipe 35 always passes through the position of the connecting pin 33, which is the center of rotation thereof, so that it is always routed in the state of passing the shortest distance. Moreover, since the connecting pin 33 is prevented from rotating with respect to the stay 32, the hydraulic pipe 35 is connected to the stay 3.
From 2 to the tip side, there is substantially no effect of bending, and on the upper boom 30U side, since it bends from the straight state to the left and right, and from the state of bending left and right to the straight state, either There is no tendency to bend in the direction. Further, since the hydraulic pipe 35 is rigid, the upper boom 30U side is slightly curved with respect to the central axis line thereof, but since it bends so as to substantially follow the central axis line direction, almost no excess pressure is applied to the hydraulic pipe line 35. You don't have to be long.

Therefore, in the state of FIG. 5, the hydraulic pipe 3
Since it is not necessary to substantially have an extra length in the direction of offsetting 5 to the left and right, the amount of protrusion of the hydraulic pipe 35 at the position between the upper boom 30 and the stay 32 can be minimized. As a result, the possibility of the hydraulic pipe 35 colliding with another object during the work such as excavation of earth and sand is significantly reduced, and protection from damage and the like is achieved. In addition, the fact that the protrusion of the hydraulic pipe 35 can be suppressed improves the appearance.

Next, FIGS. 8 and 9 show another embodiment of the present invention. In this embodiment,
A pipe clamp unit 53 in which a pipe holding member 52 is held by a pair of clamp plates 50, 51 is used, and the pipe clamp unit 53 is attached to a fixing bolt 54 screwed into a screw hole 33a of a connecting pin 33 around an axis. It is configured to be inserted rotatably. Like the first embodiment described above, the pipe holding member 52 is a rectangular block-shaped member made of an elastic member such as rubber, and has an insertion passage 52a formed at the center thereof for inserting the hydraulic pipe 35, Further, a cut portion 52b is formed downward from the insertion passage 52a.

The clamp plate 50 includes right and left bent portions 50a, 5
0a and a connecting portion 50b, each of which is a substantially U-shaped member, and two pipe holding members 52 are fixed to each other so that one of the bent portions 50a and the connecting portion 50b of the clamp plate 50 is fixed. It is provided. In addition, the clamp plate 51
Is a flat plate-like member, and narrow-width overhanging portions 51a are provided at both ends thereof so as to project by a predetermined length.
On the other hand, a concave portion 50c is formed at the end of the bent portion 50a of the clamp plate 50, and the protruding portion 51a of the clamp plate 51 is engaged with the concave portion 50c of the clamp plate 50 to clamp the clamp plate 50. The relative rotation between the plates 50 and 51 is restricted.

A through hole 55 is bored at an intermediate position of the connecting portion 50b of the clamp plate 50, and a connecting cylinder 56 having a threaded portion on its outer peripheral surface is provided at the center of the clamp plate 51 so as to project therefrom. There is. The connecting cylinder 56 is assembled so as to project from the through hole 55 of the clamp plate 50, and the nut 57 is attached to the connecting cylinder 56.
The clamp plate 51 is drawn into the clamp plate 50 side by being screwed into, and the hydraulic pipe 35 is fixed by compressing the pipe holding member 52 in which the hydraulic pipe 35 is inserted into the insertion passage 52a. You can do it. As a result, the pipe clamp unit 53 is assembled. In this state, the fixing bolt 54 is inserted from the nut 57 side into the pipe clamp unit 53 and screwed into the screw hole 33a of the connecting pin 33, so that the hydraulic pipe 35 is connected. The position can be regulated on the end surface of the connecting pin 33. However, the piping clamp unit 53 is rotatable relative to the fixing bolt 54.

Therefore, at the time of offset, the upper boom 3
An angle is generated between 0U and the stay 32, but at this time, not only the hydraulic pipe 35 but also the pipe clamp unit 53 for restricting the routing position of the hydraulic pipe 35 to the position of the connecting pin 33 of the fixing bolt 54. Rotate around the axis by a predetermined angle. As a result, the pipe clamp unit 53 is inclined in the horizontal direction according to the bend of the hydraulic pipe 35, so that the bend of the hydraulic pipe 35 at the rotation center position becomes gentle, and an unreasonable load acts on the hydraulic pipe 35. Can be suppressed. In addition, the length of the fixing bolt 54 is increased,
By allowing the pipe clamp unit 53 to move vertically along the fixing bolt 54 by a length equal to or greater than its thickness dimension, the nut 57 is disengaged from the connecting cylinder 56, and the clamp plate 51 is fixed to the clamp plate 50. When the hydraulic pipe 35 is separated from the existing pipe holding member 52 by the diameter of the hydraulic pipe 35 or more, the hydraulic pipe 35 can be separated from the pipe clamp unit 53 with the fixing bolt 54 still attached.

In each of the above-mentioned embodiments,
Although the structure in which the two hydraulic pipes are held by the position restricting member is shown, in order to hold the hydraulic pipes connected to the hydraulic cylinders other than the bucket hydraulic cylinder, the clamp plate forming the pipe holding member can be held. It suffices if the body is provided with a necessary number of pipe holding members.

[0029]

Since the present invention is configured as described above, it is possible to minimize the excess length required for the hydraulic pipe extending along the movable portion that constitutes the working mechanism, and It is possible to prevent the pipe from protruding from the outer surface of the working mechanism.

[Brief description of drawings]

FIG. 1 is a side view showing a connecting portion between an upper boom and an arm provided with a hydraulic pipe routing structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a vertical sectional view of a clamp means.

FIG. 4 is a plan view of a clamp means.

FIG. 5 is a plan view showing a state where the hydraulic pipe is routed around the connecting pin between the upper boom and the stay, and is a view showing a state where the upper boom and the stay are aligned with each other.

FIG. 6 is an operation explanatory diagram in a state in which the state of FIG. 5 is offset to the left.

FIG. 7 is an operation explanatory view in a state where the state of FIG. 5 is offset to the right.

FIG. 8 is a cross-sectional view of a clamp means showing another embodiment of the present invention.

9 is an exploded perspective view of a pipe clamp unit that constitutes the clamp means of FIG. 8. FIG.

FIG. 10 is an external view of a hydraulic excavator including an offset type front work mechanism as an example of a construction machine.

FIG. 11 is a configuration explanatory view showing a hydraulic pipe routing structure in an offset type front work mechanism according to a conventional technique.

[Explanation of symbols]

30 boom 30U upper boom 31 arm 32 stay 33, 34 connecting pin 35 hydraulic piping 36 hydraulic cylinder for bucket 40 clamping means 41, 50, 51 clamping plate 42, 52
Piping holding members 43, 54 Fixing bolts 53 Piping clamp unit

Claims (6)

[Claims] 1. A working mechanism, which is provided in a traveling vehicle and is connected to a plurality of movable members, each driven by a hydraulic actuator, so as to be relatively rotatable via a connecting pin, and a plurality of flexible tubes. In a construction machine configured to include a hydraulic pipe extending along a member and connected to each of the hydraulic actuators, the hydraulic pipe is configured to pass through an end face side of one of the connecting pins, and the connection is made. A hydraulic pipe routing structure for a construction machine, characterized in that a position regulating member for holding the hydraulic pipe is provided at a portion on the end face side of the pin. 2. A working mechanism in which a plurality of movable members each driven by a hydraulic actuator are rotatably connected to each other via an connecting pin to an upper slewing body rotatably connected to a lower traveling body, and In a construction machine configured to extend a hydraulic pipe composed of a plurality of flexible pipes from an upper revolving structure along each of the movable members to connect to each of the hydraulic actuators, the hydraulic pipe includes one of the movable members. Of at least the largest relative rotation angle, a position regulating member is provided at or near the end face of the connecting pin provided at the connecting portion, and the position regulating member holds the hydraulic pipe. A hydraulic pipe routing structure for construction machinery. 3. The working mechanism includes a boom connected to the upper revolving structure such that the boom can be lifted and lowered, an arm rotatably connected to a tip of the boom in a vertical direction, and an arm vertically attached to a tip of the arm. The boom is configured to be rotatable with respect to each other, and the boom is configured to be rotatable with respect to each other between a lower boom connected to the upper swing body and an upper boom connected to the arm via a stay. 2. The hydraulic pipe routing for a construction machine according to claim 1, wherein the hydraulic pipe position control member is attached to a connecting pin provided at a connecting portion between the upper boom and the stay. Construction. 4. A connecting portion of the working mechanism to the upper swing body is provided with a swing post for rotatably supporting a base end portion of the working mechanism in a horizontal direction at a predetermined angle, and the swing post is connected via a connecting pin. 2. The hydraulic pipe routing structure for a construction machine according to claim 1, wherein the position restricting member is attached to a connecting pin of the swing post. 5. The position regulating member is provided with a pipe holding member made of an elastic member fixed to a clamp plate body, and the clamp plate body is detachably fixed to an end surface of the connecting pin with a fixing screw. In this configuration, the fixing screw is screwed into the end face of the connecting pin to compress the pipe holding member by the end face and the clamp plate body, and the hydraulic pipe is fixed. The hydraulic pipe routing structure for a construction machine according to claim 1, wherein: 6. A pipe clamp unit, comprising: a pipe holding member made of an elastic member through which a hydraulic pipe is inserted; and a pair of clamp plates sandwiching the pipe holding member; The hydraulic pipe routing structure for a construction machine according to claim 1, characterized in that it is configured to include at least a supporting rod that is rotatably inserted around an axis, and that the supporting rod is fixed to an end surface of the connecting pin. .