JP2017103995A - Supporting device for work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device for a work vehicle which can reduce the cost required for reconstruction of utility pole.SOLUTION: A supporting device for supporting the work vehicle comprises: a plurality of outrigger jacks 8 extending downward to support the vehicle; and a temporary utility pole support 110 for supporting a temporary electric pole D for temporarily holding the electric wire installed on the electric pole in the electric pole reconstruction work which pulls out a utility pole to be rebuilt to construct a new utility pole. The temporary utility pole support 110 is formed to extend in a predetermined axial direction, one end in the axial direction is attached to the outrigger jack 8, the other end in the axial direction is attached to the temporary pole D, and the temporary utility pole D can be supported. The temporary utility pole support 110 is selectively and detachably attached to any one of the plurality of outrigger jacks 8.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a support device for a work vehicle for supporting a pole member used for rebuilding work of a utility pole.

  2. Description of the Related Art In recent years, a predetermined rebuilding method for building a new utility pole at an original position (former hole) where a utility pole to be rebuilt has been removed has been put into practical use as a utility pole rebuilding work without a power failure. In this rebuilding method, a temporary pole or a pole member called a temporary pole is installed near the main hole, and the electric wires installed on the existing pole are temporarily moved to the temporary pole, and then the existing pole is After removing and building a new utility pole in the original hole, the procedure is to move the electric wire held in the temporary pole to the new utility pole. The above rebuilding method is very effective in that it eliminates the need for excavating new pole holes and negotiating with the owners of the utility poles. And with the need for such a rebuilding method increasing, a supporting device (supporting tool) capable of mechanically supporting the temporary utility pole near the main hole has been proposed (for example, Patent Documents). 1).

Japanese Patent No. 5527864

  However, in the supporting device described in the above-mentioned patent document, the number of components is very large, and it takes time to transport and assemble to the work site, which may increase the cost required for the rebuilding work of the utility pole. There is a problem that there is.

  This invention is made | formed in view of such a subject, and it aims at providing the support apparatus of the working vehicle which can reduce the cost which a telephone pole rebuilding construction requires.

  In order to solve the above problems, a work vehicle support device according to the present invention includes a vehicle that can travel, a plurality of jacks that extend downward to support the vehicle (for example, the outrigger jack 8 in the embodiment), Supports a pole member (for example, temporary power pole D in the embodiment) for temporarily holding an electric wire installed on the power pole in a power pole rebuilding work in which a power pole to be rebuilt is removed and a new power pole is built. A support device for a work vehicle including a support (for example, the temporary utility pole support 110 in the embodiment), wherein the support is formed to extend in a predetermined axial direction, and one end in the axial direction is the jack. The other end in the axial direction is attached to the pillar member and can support the pillar member, and the support is selectively and detachably attached to any of the plurality of jacks. Characterized in that it is.

  In the work vehicle support device having the above-described configuration, the support includes a first support member that is detachably attached to the jack (for example, the rotation locking collar 110 and the outrigger bracket 120 in the embodiment), and the first support member. It is preferable to include a second support member (for example, the temporary power pole bracket 140 in the embodiment) that is provided to be extendable and contractable in the axial direction with respect to the support member and supports the column member.

  In the work vehicle support device having the above-described configuration, it is preferable that the support is attached to be rotatable in a horizontal plane around the jack.

  Furthermore, the work vehicle support device having the above-described configuration includes two support tools for supporting the column member, and the two support tools are respectively attached to the different jacks so that the same one column is provided. It is preferable to support the member.

  According to the work vehicle support device of the present invention, it is possible to stably support the lower portion of the column member only by attaching a simple support tool to an existing work vehicle without requiring vehicle specification changes or modifications. Therefore, it is possible to greatly reduce the cost and man-hour required for the utility pole rebuilding work. In addition, since the number of component parts is significantly reduced as compared with the conventional apparatus, it is easy to maintain and manage the parts, and it is possible to shorten the transport time and assembly installation time. Further, since the support tool is selectively and detachably attached to any one of the plurality of jacks, the support tool covers a wide range of the entire circumference of the work vehicle as long as it is within the movable range (stroke) of the support tool. It is possible to support a pillar member, and without being restricted by the orientation of the vehicle of the work vehicle relative to the pillar member and the relative positional relationship between the vehicle position and the installation position of the pillar member, Also, the column member can be reliably supported. In addition, since the column member can be supported by using the vehicle weight of the work vehicle, the support stability of the column member can be improved as compared with the conventional device.

  Further, in the work vehicle support device configured as described above, the support tool is configured to be extendable and contractable in the axial direction, so that the support device can be supported according to the relative positional relationship between the vehicle position of the work vehicle and the installation position of the column member. The tool can be arbitrarily extended to the installation position of the column member, and the support tool can be easily aligned with the installation position of the column member.

  Further, in the work vehicle support device having the above-described configuration, the support tool is configured to be rotatable in a horizontal plane around the jack, so that the relative positional relationship between the vehicle position of the work vehicle and the installation position of the column member is obtained. Accordingly, the support can be arbitrarily swung, and the support can be more easily aligned with the installation position of the column member.

  Further, in the work vehicle support device having the above-described configuration, the two support members are respectively attached to different jacks to support the same single column member, so that the behavior of the column member during work is restricted. Thus, the pole member can be securely held at the installation position, and as a result, it is possible to smoothly proceed with the rebuilding work of the utility pole.

It is a side view of a digging pillar car according to the present embodiment. It is a top view of the said digging pillar car. It is a perspective view which shows the boom head vicinity provided in the said digging pillar car. It is a side view which shows the said boom head vicinity. It is a perspective view which shows the outrigger apparatus provided in the said digging pillar car. It is a top view which shows the upper support apparatus provided in the said boom head, (a) shows the closing position of an opening-and-closing arm, (b) shows the opening position of an opening-and-closing arm. It is a disassembled perspective view which shows the temporary utility pole support tool of the lower part support apparatus provided in the said outrigger apparatus. It is a top view which shows the said temporary utility pole support tool. It is a top view which shows the support state of the temporary utility pole by the said temporary utility pole support tool, (a) shows the state which supported the temporary utility pole in the left side of a vehicle, (b) shows the temporary utility pole in the right side of a vehicle. The state which supported is shown, (c) shows the state which supported the temporary utility pole in the back of a vehicle. It is a side view which shows the state which supported the temporary utility pole by the said upper support apparatus and the said lower support apparatus.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show an excavation column 1 as a work vehicle provided with a temporary utility pole support device (support device) according to the present embodiment. First, an excavation column car with reference to these drawings An overview of the overall configuration of 1 will be described.

  The excavated pillar car 1 is configured on the basis of a vehicle body 4 of a truck type vehicle that includes a tire wheel 2 for traveling and that can be driven and operated from a driving cab 3. On the vehicle body 4, a turntable 12 configured to be rotatable 360 degrees around the vertical axis by rotating a turning motor (hydraulic motor) 71 is disposed. The base end of the boom 13 is supported on the swivel base 12 via foot pins (not shown) provided on the top of the swivel base 12. The boom 13 has a structure in which a base end boom 13a, an intermediate boom 13b, and a front end boom 13c are assembled in order from the swivel base 12 side, and is extended and retracted by an extension cylinder 72 provided therein. The intermediate boom 13b and the distal boom 13c can be moved relative to the proximal boom 13a, and the entire boom 13 can be expanded and contracted in the axial direction. Further, a hoisting cylinder 73 is provided between the base end boom 13a and the swivel base 12, and the hoisting cylinder 73 can be moved up and down by moving the hoisting cylinder 73 in the vertical direction.

  An earth auger 15 for excavating the pillar hole is attached to the boom 13 via an auger support 14 that can be selectively connected to the proximal boom 13a and the distal boom 13c. The earth auger 15 is rotated around its axis by rotating an auger motor (hydraulic motor) 74. The earth auger 15 connects the auger support 14 to the proximal boom 13a to store the earth auger 15 along the side of the proximal boom 13a, and connects the auger support 14 to the distal boom 13c. The ground auger 15 can be swung up and down between a working posture in which the ground auger 15 is substantially perpendicular to the ground.

  When using the earth auger 15, in a state where the earth auger 15 is in a working posture, while the earth auger 15 is rotated, the fall movement and the reduction movement of the boom 13 are interlocked and moved downward linearly, Excavation work of building pillar holes is possible. On the other hand, when the earth auger 15 is not used, the earth auger 15 is stored and held in a working posture along the side of the proximal boom 13a with the boom 13 fully retracted. In a state where the earth auger 15 is held in the retracted position, the wire 17 can be wound and unwound by the winch 16 provided on the proximal boom 13a. The winch 16 includes a winch motor (hydraulic motor) 75 for rotating a winch drum (not shown) in both forward and reverse directions to wind and lower the wire 17.

  3 and 4 show the tip of the boom 13. As can be seen from these drawings, a boom head 20 is attached to the tip of the tip boom 13c. The boom head 20 has left and right side plates 21 and is formed in a box shape, and sheaves 22 and 23 are rotatably mounted therein. The wire 17 fed out from the winch 16 hangs downward from the boom head 20 via the sheaves 22 and 23, is wound around a movable pulley of the hook 18, and the tip thereof is boom head 20. It is fixed inside. Therefore, the hook 18 can be pulled up and pulled down by the action of the moving pulley by winding and lowering the wire 17 by the winch 16.

A flat contact support plate 30 is attached to the tip of the boom head 20. A tip contact portion 31 that is recessed in an arc shape is formed on the tip end side of the contact support plate 30, and a side contact portion 32 that is recessed in an arc shape is formed on the left and right side surfaces of the contact support plate 30. . Therefore, when the temporary utility pole D (see FIG. 6 and the like) is suspended using the wire 17, the upper part of the temporary utility pole D is brought into contact with the tip contact portion 13 or the side contact portion 32, The temporary utility pole D can be stably supported. Note that the curvatures of the tip contact portion 31 and the side contact portion 32 are approximately the same as or higher than the curvature of the temporary utility pole D.

  Outrigger devices 5 that can be expanded and contracted in the vehicle width direction and that can be expanded and contracted in the vertical direction are disposed on the front, rear, left, and right sides of the vehicle body 4 in order to stably support the digging pillar car 1 in operation. As shown in FIG. 5, the outrigger device 5 includes an outrigger box 6 that is fixed on the vehicle body 4 so as to extend in the vehicle width direction, and an outrigger that is attached to the outrigger box 6 so as to be extendable outward in the vehicle width direction. A beam 7 and an outrigger jack 8 which is attached to the outer tip of the outrigger beam 7 and extends downward to lift and support the vehicle body 4 are configured.

  The outrigger jack 8 includes an outer post 8a coupled to the tip of the outrigger beam 7, an inner post 8b that is provided in the outer post 8a and can be vertically expanded and contracted, and a grounding plate 8c that is provided at the lower end of the inner post 8b. ing. The outrigger beam 7 is expanded and contracted in the vehicle width direction by an outrigger cylinder (not shown) provided in the outrigger box 6, and the outrigger jack 8 is vertically moved by a jack cylinder (not shown) provided in the outer post 8a. It is expanded and contracted.

  A jack operating device 9 is provided at the rear of the vehicle body 4 so that jack operations such as overhang and storage of each outrigger jack 8 can be performed individually. The operator can operate the jack operating device 9 to perform the widening operation and the expansion operation of each outrigger jack 8, and can perform various operations in a stable posture in which the vehicle body 4 is lifted and supported.

  An operation seat 25 for operating the operation devices (outrigger device 5, swivel stand 12, boom 13, earth auger 15, winch 16, etc.) is provided on the side of swivel stand 12 in vehicle body 4. . In front of the operation seat 25, an operation device 26 that can be operated in a posture in which an operator is sitting is disposed. The operation device 26 includes an operation lever for performing the extension operation of the outrigger jack 8, an operation lever for performing the turning operation of the swivel base 12, an operation lever for performing the telescopic operation of the boom 13, and a lifting operation of the boom 13 There are provided an operation lever for carrying out the operation, an operation lever for carrying out the rotation operation of the earth auger 15, an operation lever for carrying out the hoisting / lowering operation of the winch 16, and the like. In addition, the operation device 26 has an operation lever for performing an operation of pulling out the electric pole by a pulling pole machine (not shown), and an attachment (for example, a temporary electric pole support tool 110 described later) attached as an optional hydraulic device. An operation lever is also provided for performing the operation operation.

  The digging column car 1 having such a configuration is provided with a temporary utility pole support device. This temporary utility pole support device is a new utility pole ("new utility pole") in the original hole (original position) that remains when the original utility pole ("old utility pole") is removed during the construction of the utility pole. It is used for a predetermined utility pole rebuilding method (referred to as “original hole rebuilding method”). In this original hole rebuilding method, until the electric wire (for example, 6600V high-voltage electric wire, 100V or 200V low-voltage electric wire, communication cable such as optical cable, etc.) erected on the old electric pole is transferred to the new electric pole A pole member (referred to as “temporary utility pole”) for temporarily holding the battery is installed near the main hole. The temporary utility pole support device according to the present embodiment is for supporting the temporary utility pole in an upright state (upright state) at a position near the main hole. Then, the structure of the temporary utility pole support apparatus which concerns on this embodiment below is demonstrated.

  The temporary power pole support device mainly includes an upper support device 40 attached to the side portion of the boom head 20 and a lower support device 100 attached to the outrigger jack 8, and the upper support device 40 and the lower support device 100 temporarily The power pole D is configured to be supported in a standing state in which the lower end portion of the power pole D is grounded to the ground.

As shown in FIGS. 3 and 6, the upper support device 40 includes a main body frame 41 attached to the boom head 20 having an accommodation space 47 capable of accommodating the upper portion of the temporary utility pole D inside, and the main body frame. 41, a pair of open / close arms 50 provided to be swingable, and a swing cylinder 60 that is pivoted across the pair of open / close arms 50.

  The main body frame 41 includes a base portion 42 that defines a part of the accommodation space 47, a cylindrical connecting portion 43 that protrudes from the center portion of the base portion 42 toward the boom head 20, and both ends of the base portion 42. The pivoting portion 44 provided, a pair of roller support portions 45 projecting from the central portion of the base portion 42 toward the accommodation space 47 side, and a pair of roller support portions 45 are rotatably supported. Frame side roller 46.

  The open / close arm 50 includes a link portion 51 formed in a plate shape, a swing shaft portion 52 provided at an end of the link portion 51, and a circular arm that is joined to the swing shaft portion 52 and extends in a curved manner. And an arm-side roller 54 provided rotatably at the tip of the arm portion 53 with the arm portion 53 as a central axis. In this open / close arm 50, the swing shaft portion 52 is supported by the pivot portion 44 of the main body frame 41, so that the arm portion 53 is swingable (openable / closable) around the swing shaft portion 52. (See the direction of arrow A in FIG. 3).

  The swing cylinder 60 is configured to be extendable and contractable using, for example, a hydraulic cylinder. As shown in FIG. 5, the swing cylinder 60 has a bottom side end portion pivoted to one base portion 51 of the pair of base portions 51 and a rod side end portion pivoted to the other base portion 51. Yes. Therefore, when the swing cylinder 60 is extended, as shown in FIG. 6A, the tip ends of the pair of arms 53 swing in a direction in which they approach each other, and the temporary power pole stored in the storage space 47 is supported. It can be located in a possible closed position. On the other hand, when the oscillating cylinder 60 is contracted, the distal ends of the arm portions 53 oscillate in directions away from each other, as shown in FIG. Can be located.

  As shown in FIG. 6, the sheave 23 is rotatable around a sheave pin 24 that protrudes toward the upper support device 40. The connecting portion 43 of the main body frame 41 is pivotally supported by the protruding portion of the sheave pin 24, and the main body frame 41 (upper support device 40) can swing around the sheave pin 24 (in the direction of arrow B in FIG. 3). reference). Further, the center of gravity of the upper support device 40 (main body frame 41) is set so that the accommodation space 47 is displaced to the swinging position in the vertical direction regardless of the upward and downward movement of the boom 13. The connecting portion 43 (upper support device 40) is detachably attached to the sheave pin 24 using bolts, pins, or the like.

  As shown in FIGS. 7 to 8 and the like, the lower support device 100 is configured to include a pair of temporary utility pole supports 110 that are detachably attached to the outrigger jack 8. The temporary power pole support 110 includes a rotation locking collar 120 that is locked to the inner post 8b of the outrigger jack 8, an outrigger bracket 130 that supports the rotation locking collar 120, and a temporary power pole bracket 140 that supports the temporary power pole D. The support cylinder 150 is provided between the brackets 130 and 140.

  The rotation locking collar 120 includes a convex half body 121a in which a shaft-shaped guide pin 122 is projected and a concave half body 121b in which a guide hole 123 into which the guide pin 122 is inserted is formed. By causing the halves 121 (121a, 121b) to face each other, the guide pins 122 of the convex half 121a are inserted into the guide holes 123 of the concave half 121b, so that the halves 121 are integrated together. Assembled. Each half body 121 is formed integrally with a semi-cylindrical portion 124 that extends in the vertical direction, and an upper end of the semi-cylindrical portion 124, and is prevented from coming down when the rotation locking collar 120 is attached to the outrigger bracket 130. And a flange portion 125 acting as In addition, each half body 121 is formed with a locking groove 126 having a rectangular cross section for sandwiching and locking the outrigger jack 8 inside thereof.

  The outrigger bracket 130 is composed of a pair of halves 131 (131a, 131b) that are substantially divided into two. The half body 131a is joined to the rod side end of the support cylinder 150, and the half body 131b is detachably attached to the half body 131a. The half-divided body 131 includes a collar support portion 132 having a semicircular shape, and a flat plate-shaped fixing plate portion 133 integrally provided at each end of the collar support portion 132, and is formed in a substantially Ω shape as a whole. Has been. The fixing plate portion 133 is provided with a circular hole 135 through which the fixing bolt 134 is inserted. The bolts 134 are in a state where the fixing plate portions 133 of the halves 131 are opposed to each other. Is inserted into the circular hole 135 and the nut 136 is screwed from the opposite side, whereby the halves 131 are fastened together. Further, the half-divided body 131 is provided with a support hole 137 formed with a hole diameter slightly larger than the outer diameter of the semi-cylindrical portion 124 of the rotation locking collar 120. 124 is supported in a loose insertion state with a slight clearance. Therefore, the outrigger bracket 130 supports the rotation locking collar 120 so as to be relatively rotatable. In other words, the outrigger bracket 130 can rotate around the vertical axis around the outrigger jack 8 to which the rotation locking collar 120 is locked.

  The temporary utility pole bracket 140 is composed of a pair of halves 141 (141a, 141b) that are substantially divided into two. The half body 141a is joined to the bottom side end portion of the support cylinder 150, and the half body 141b is detachably attached to the half body 141a. The half-split body 141 includes a collar support portion 142 having a semicircular shape, and a flat plate-like fixing plate portion 143 integrally provided at each end of the collar support portion 142, and is formed in a substantially Ω shape as a whole. Has been. The fixing plate portion 143 has a circular hole 145 through which the fixing bolt 144 is inserted, and the bolt 144 is attached in a state where the fixing plate portions 143 of the halves face each other. By inserting the nut 146 from the opposite side through the circular hole 145, the halves 141 are fastened together. In addition, the halved body 141 is provided with a support hole 147 formed with a hole diameter slightly larger than the outer diameter of the temporary utility pole D, and supports the temporary utility pole D in a loosely inserted state with a slight clearance. . Therefore, the temporary utility pole bracket 140 supports the temporary utility pole D so as to be relatively rotatable.

  The support cylinder 150 is configured to be extendable and contractable using, for example, a hydraulic cylinder. The support cylinder 150 has a bottom end connected to the half 141a of the temporary utility pole bracket 140 and a rod end connected to the half 131a of the outrigger bracket 130. When the support cylinder 150 is extended, the temporary utility pole bracket 140 moves relative to the outrigger bracket 130 in the axial direction (separating direction). On the other hand, when the support cylinder 150 is contracted, the temporary utility pole bracket 140 moves relative to the outrigger bracket 130 in the axial direction (the approach direction). As described above, the support cylinder 150 is expanded and contracted to move the temporary power pole bracket 140 relative to the outrigger bracket 130 in the axial direction (separating direction or approaching direction), so that the entire temporary power pole support 110 is expanded or contracted. It is possible to change the turning radius in the horizontal plane around the outrigger jack 8 by moving.

  The temporary utility pole support 110 having such a configuration can be selectively attached to any one of the four outrigger jacks 8. The pair of temporary utility pole support members 110 has one outrigger bracket 130 (rotation locking collar 120) on one end side in the axial direction locked to different outrigger jacks 8 while the other end side in the axial direction. The temporary utility pole bracket 140 is locked to the same temporary utility pole D. Here, FIG. 9 shows a state where the pair of temporary utility pole supports 110 are attached to different outrigger jacks 8. In the present embodiment, the outrigger jack 8 to be attached to each utility pole support 110 is arbitrarily selected according to the vehicle orientation of the digging pillar car 1 and the relative positional relationship between the vehicle and the temporary utility pole D. Is possible.

First, when the temporary utility pole D is installed on the left side of the vehicle, as shown in FIG. 9A, one temporary utility pole support 110 is attached to the outrigger jack 8 on the left front side of the vehicle, and the other temporary utility pole support is provided. The tool 110 is attached to the outrigger jack 8 on the left rear side of the vehicle. Further, when the temporary utility pole D is installed on the right side of the vehicle, as shown in FIG. 9B, one temporary utility pole support 110 is attached to the outrigger jack 8 on the right front side of the vehicle, and the other temporary utility pole support is provided. The tool 110 is attached to the outrigger jack 8 on the right rear side of the vehicle. On the other hand, when it is desired to install the temporary utility pole D behind the vehicle, as shown in FIG. 9C, one temporary utility pole support 110 is attached to the outrigger jack 8 on the left rear side of the vehicle, and the other temporary utility pole support is provided. 110 is attached to the outrigger jack 8 on the right rear side of the vehicle. In such a lower support device 100, the movable range (extension / revolution range) of one temporary utility pole support tool 110 and the movable range (extension / revolution range) of the other temporary utility pole support tool 110 are within an overlapping region. It is possible to support the located temporary utility pole D. 9 illustrates a state in which the outrigger jack 8 is extended to the maximum in the vehicle width direction (maximum extended state), but the temporary power pole support is provided according to the amount of extension of the outrigger jack 8 in the vehicle width direction. The mounting position of the tool 110 is also changed.

  Next, in order to facilitate understanding of the present embodiment, a characteristic operation of the temporary utility pole support device will be described with additional reference to FIG. Below, the operation | work content which supports the temporary utility pole D in the original hole rebuilding method is illustrated as an operation | movement content of the digging pillar car 1.

  As mentioned above, the main hole rebuilding method is a method of building a new power pole in the main hole that remains after the old power pole is removed. Until the rebuilding from the old power pole to the new power pole is completed, the main hole It is necessary to install the temporary utility pole D in the vicinity of (the old utility pole, the new utility pole), and temporarily hold the electric wire installed on the old utility pole by the temporary utility pole D. If the digging pillar car 1 of this embodiment is used, it is possible to support the temporary utility pole D in an upright state (upright posture) on the ground without excavating a construction pole hole for the temporary utility pole. The work flow will be described below.

  First, a hook 18 is hung on the rope 19 tied to the temporary power pole D, the boom 13 is moved up and down, and the winch 16 is activated to wind up the wire 17, so that the lower end of the temporary power pole D is lifted from the ground. Lift it away. At this time, by tying the rope 19 to a position shifted from the center of gravity of the temporary utility pole D toward the distal end side, the temporary utility pole D is in a slightly inclined posture from the upright posture.

  Subsequently, the swing cylinder 60 of the upper support device 40 is contracted and the open / close arm 50 is swung to the open position (see FIG. 6B). The temporary power pole D is swung with the portion where the rope 19 is tied as a fulcrum, and the upper part of the temporary power pole D is accommodated in the accommodating space 47 from the open portion of the opening / closing arm 50. In addition, when the upper part of the temporary utility pole D is accommodated in the accommodation space 47, it may be performed in a state where the lower end of the temporary utility pole D is in contact with the ground.

  When the upper portion of the temporary utility pole D is accommodated in the accommodation space 47, the open / close arm 50 is swung to the closed position (see FIG. 6A), and the upper portion of the temporary utility pole D is supported by the upper support device 40. At this time, as described above, the upper support device 40 is swingable in the vertical plane around the sheave pin 24. Therefore, even if the boom 13 is raised and lowered while the upper portion of the temporary power pole D is supported by the upper support device 40, the upper support device 40 keeps the sheave pin 24 so that the temporary power pole D maintains an upright posture along the direction of gravity. Rocks around the center. Thereby, the temporary utility pole D can be maintained in an upright posture regardless of the up-and-down movement of the boom 13, and the temporary utility pole D is set to a predetermined position in the vicinity of the old utility pole (former hole) (position where the temporary utility pole D is installed). It becomes easy to align. When the temporary utility pole D is positioned at the installation position, the lower support device 100 (a pair of temporary utility pole support tools 110) is attached to the outrigger jack 8 thereafter.

Subsequently, based on the direction of the vehicle of the digging column car 1 and the relative positional relationship between the vehicle position and the installation position of the temporary utility pole D, the operator holds each temporary utility pole support 110 on any outrigger jack 8. Select whether to attach to. In this example, it is assumed that the installation position of the temporary utility pole D is behind the excavated pillar car 1, and one temporary utility pole support tool 110 of the pair of temporary utility pole support tools 110 configured as the lower support device 100 is used. It is attached to the outrigger jack 8 on the left rear side of the vehicle, and the other temporary power pole support 110 is attached to the outrigger jack 8 on the right rear side of the vehicle (see FIG. 9C).

  In order to attach each temporary utility pole support 110 to the outrigger jack 8, first, each half body 121 of the rotation locking collar 120 in the separated state is sandwiched and engaged with the inner post 8 b of the outrigger jack 8 from both sides. Thus, the guide pin 122 of the convex half body 121a is inserted into the guide hole 123 of the concave half body 121b, and the rotation locking collar 120 is combined in an engaged state with the inner post 8b of the outrigger jack 8 being sandwiched inside. .

  Subsequently, each half 131 of the outrigger bracket 130 is fitted to the half cylindrical portion 124 of the rotation locking collar 120 from both sides, and each half 131 is bolted with the rotation locking collar 120 incorporated therein. 134 and the nut 136 are integrally fastened. As described above, a slight clear lath (play) is secured between the support hole 137 of the outrigger bracket 130 and the semi-cylindrical portion 124 of the rotation locking collar 120, thereby the outrigger bracket 130 and the rotation locking collar. 120 can be coupled to each other so as to be relatively rotatable. As a result, the temporary power pole support 110 can be expanded and contracted and swiveled in the horizontal plane with the outrigger jack 8 locked with the rotation locking collar 120 as a base point, and can be aligned with the temporary power pole D. Specifically, the support cylinder 150 is expanded and contracted to change the turning radius of the temporary power pole support 110, and the temporary power pole support 110 is turned in a horizontal plane based on the turning radius, thereby supporting the temporary power pole support. The distal end position of the tool 110 (position of the temporary utility pole bracket 140) can be displaced back and forth and left and right to match the positional relationship with the temporary utility pole D.

  In this manner, the pair of temporary utility pole supports 110 are attached to the different outrigger jacks 8, while the outrigger bracket 140 of each temporary utility pole support 110 is aligned with the lower part of the same single temporary utility pole D. In addition, since a pair of temporary utility pole support 110 is respectively straddled between the outrigger jack 8 and the temporary utility pole D in the positional relationship which shifted the up-and-down position, interference between temporary utility pole supports 110 is mutually. It is prevented beforehand.

  And in the state which aligned the front-end | tip of the temporary utility pole support 110 to the temporary utility pole D as mentioned above, the half-split body 141 of each temporary utility pole bracket 140 is fitted to the lower part of the temporary utility pole D from both sides, and each temporary utility pole The bracket 140 is locked to the lower part of the temporary utility pole D. In this way, the lower part of the temporary utility pole D is supported by the pair of temporary utility pole supports 110. Therefore, the upper part of the temporary utility pole D is supported by the upper support device 40, and the lower part of the temporary utility pole D is supported by the lower support device 100. It can be installed stably in an upright position.

  In this state, in the state where the temporary power pole D is supported in the vertical posture by the upper and lower support devices 40, 100, the boom 13 is tilted down, or the wire 17 is lowered by the winch 16, and the temporary power pole D is lowered. By lowering, the lower end portion of the temporary power pole D can be grounded on the ground, and the vertical load generated on the temporary power pole D can be received on the ground. Therefore, since only the moment in the direction in which the temporary utility pole D tends to fall is supported by the upper and lower support devices 40, 100, the load applied to the temporary utility pole support 110 is reduced, and the lower support device 100 is The temporary utility pole D can be stably supported at a predetermined installation position without increasing the size.

Subsequently, after the temporary power pole D is supported in an upright posture by the upper and lower support devices 40 and 100 as described above, the electric wire installed on the old power pole is moved to the temporary power pole D, the old power pole is removed, and the new power pole is installed. The electric wire is temporarily held by the temporary utility pole D until it is built. And after a new utility pole is built in a former hole, the main work of the rebuilding work of a utility pole is completed by moving the electric wire hold | maintained at the temporary utility pole D to a new utility pole.

  As described above, according to the temporary utility pole support device according to the present embodiment, a simple jig (temporary utility pole support 110) is attached to the existing excavated pillar car 1 without the need to change or modify the specifications of the vehicle. Thus, since the lower part of the temporary utility pole D can be stably supported, the cost and man-hour required for the utility pole rebuilding work can be significantly reduced. In addition, since the number of component parts is significantly reduced as compared with the conventional apparatus, it is easy to maintain and manage the parts, and it is possible to shorten the transport time and assembly installation time. Further, since the temporary power pole support 110 is configured to be selectively and detachably attached to any one of the plurality of outrigger jacks 8, if it is within the movable range (stroke) of the temporary power pole support 110, The temporary utility pole D can be supported over a wide range of the entire circumference of the column 1 and the direction of the vehicle of the digging pole 1 with respect to the temporary pole D and the relative position between the vehicle position and the installation position of the temporary utility pole D Therefore, the temporary utility pole D can be reliably supported even in a narrow construction site, without being restricted by the positional relationship. Moreover, since the temporary utility pole D can be supported using the vehicle weight (for example, 6 to 7 tons) of the digging pillar car 1, the support stability of the temporary utility pole D is improved as compared with the conventional device. Is possible.

  Moreover, in the temporary utility pole support apparatus of this embodiment, since the temporary utility pole support tool 110 is comprised so that expansion-contraction is possible to an axial direction, relative of the vehicle position of the digging pillar car 1 and the installation position of the temporary utility pole D is sufficient. The temporary utility pole support 110 can be arbitrarily extended to the installation position of the temporary utility pole D according to the positional relationship, and the temporary utility pole support 110 can be easily positioned with respect to the installation position of the temporary utility pole D. It becomes.

  Moreover, in the temporary utility pole support apparatus of this embodiment, since the temporary utility pole support 110 is comprised so that turning in a horizontal surface centering on the outrigger jack 8 is carried out, the vehicle position of the digging construction column car 1 and the temporary utility pole D The temporary utility pole support 110 can be arbitrarily rotated according to the relative positional relationship with the installation position, and the temporary utility pole support 110 is more easily aligned with the installation position of the temporary utility pole D. It becomes possible.

  Furthermore, in the temporary utility pole support apparatus of this embodiment, since the temporary utility pole support tool 110 is comprised so that expansion-contraction is possible to an axial direction, the relative of the vehicle position of the digging pillar 1 and the installation position of the temporary utility pole D is sufficient. The temporary power pole support tool 110 is arbitrarily extended to the installation position of the temporary power pole D by arbitrarily extending the temporary power pole support tool 110 to the installation position of the temporary power pole D according to the specific positional relationship. Is possible.

  Moreover, in the temporary utility pole support apparatus of this embodiment, since it is the structure which attaches the two temporary utility pole support tools 110 to the mutually different outrigger jack 8, and supports the same one temporary utility pole D, the temporary utility pole in operation | work The temporary power pole D can be securely held at the installation position by restraining the behavior of D, and as a result, the rebuilding work of the power pole can be proceeded smoothly.

  In addition, this invention is not limited to the said embodiment, If it is a range which does not deviate from the summary of this invention, it can improve suitably.

  In the above-described embodiment, the provisional utility pole support using a hydraulic cylinder (support cylinder) has been described as an example. However, the present invention is not limited to this configuration. For example, a plurality of cylindrical shapes combined in a nested manner are used. The member may be configured to be movable in the axial direction. In this case, the temporary power pole support may be extended and contracted manually by the operator without using hydraulic pressure. Further, depending on the stroke of the hydraulic cylinder, etc., a plurality of types of temporary utility pole supports having different application ranges such as for long, medium, and short lengths may be prepared.

  In the above-described embodiment, the halves 131 (141) of the brackets 130 (140) are fastened by bolts and nuts. However, the present invention is not limited to this configuration. The halved body 130 (140) may be fastened using a clamp tool or the like. Further, a half-type bearing (such as a half metal or a split type bearing) is attached to the inside of each half body 131 (141), and the rotation locking collar 120 supported by each half body 131 (141). Alternatively, the rotational slidability of the temporary utility pole D may be improved.

  In the above-described embodiment, the configuration in which the temporary utility pole support 110 is attached to the inner post 8b of the outrigger jack 8 is described as an example. However, the configuration is not limited to this configuration, and for example, the outer post of the outrigger jack 8 You may attach to 8a or the outrigger beam 7. FIG.

  Moreover, in the above-mentioned embodiment, although the case where the temporary utility pole D was supported by the temporary utility pole support tool 110 was illustrated and demonstrated, it is not limited to this configuration, for example, You may comprise so that the new utility pole of the object of a building pole may be supported by the temporary utility pole support tool 110, and may be guided to an up-down direction.

  Moreover, in the above-mentioned embodiment, although the digging pillar car was illustrated and demonstrated as a work vehicle which concerns on this invention, it is not limited to this, For example, other than a crane vehicle, an aerial work vehicle, etc. The present invention can be applied to any work vehicle.

1 Drilling column car (work vehicle)
4 Car body 5 Outrigger device 8 Outrigger jack (jack)
40 Upper support device 100 Lower support device 110 Temporary utility pole support 120 Rotation locking collar (first support member)
130 Outrigger bracket (first support member)
140 Temporary utility pole bracket (second support member)
150 Support cylinder D Temporary utility pole (column member)

Claims (4)

A vehicle that can run, a plurality of jacks that extend downward to support the vehicle, and an electric wire that is installed on the power pole in a power pole rebuilding work that removes the power pole to be rebuilt and builds a new power pole. A support device for a work vehicle comprising a support for supporting a pillar member for temporary holding,
The support is formed to extend in a predetermined axial direction, and one end in the axial direction is attached to the jack, and the other end in the axial direction is attached to the pillar member so as to support the pillar member. ,
The support device for a work vehicle, wherein the support tool is selectively and detachably attached to any of the plurality of jacks.   The support includes a first support member that is detachably attached to the jack, and a second support member that is provided so as to be extendable and contractable in the axial direction with respect to the first support member and supports the column member. The work vehicle support device according to claim 1, wherein the work vehicle support device is configured as described above.   The work vehicle support device according to claim 1, wherein the support tool is attached so as to be rotatable in a horizontal plane around the jack. Two support devices for supporting the column member;
The work device support device according to claim 1, wherein the two support tools are respectively attached to the different jacks to support the same single column member.

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