JP7002004B2 - Stand for mobile cable - Google Patents

Description

The present invention relates to a mobile cable pedestal that supports a mobile cable during temporary power supply measures, etc., and in particular, holds the cable head from the ground to a desired height while reducing the burden on the operator. Regarding the pedestal for mobile cables that can be.

Conventionally, when carrying out replacement work due to aging equipment or temporary supply countermeasure work due to equipment failure, power may be supplied using a mobile cable.
Specifically, for example, a special high-voltage mobile cable is used to connect to a high place such as a transformer primary side bushing. However, since the conventional pedestal for moving cables is not supposed to be connected to a high place, the height of the pedestal for fixing the cable head is about 2 m at the maximum. Therefore, it is difficult to connect the special high voltage mobile cable to the transformer primary side bushing or the like having a height higher than this.
In order to solve such problems, at present, temporary pedestals using scaffolding and single pipes are used. However, in this case, since the materials are transported and the preparatory work is performed, the work load increases, the construction period becomes long, and the cost increases.
Therefore, in recent years, a technique capable of reducing the work load has been developed, and some inventions have already been disclosed regarding the technique.

Patent Document 1 discloses an invention relating to a mounting device for holding a mobile power cable at an arbitrary height position under the name of "mounting device for mobile power cable".
Hereinafter, the invention disclosed in Patent Document 1 will be described. The invention disclosed in Patent Document 1 includes a bracket that can be attached to and detached from an assembly table, and a clamp that can be detachably attached to any position of the bracket and holds a mobile power cable. It is characterized by being a movable bracket that can displace the position in the longitudinal direction.
In the invention having such a feature, a clamp is attached to and detached from the movable bracket and is movablely attached, and the moving power cable is held at an arbitrary height position by this clamp. Further, the movable bracket can move freely in the vertical direction and other directions. Therefore, the moving power cable can be freely moved forward and backward at the optimum positions in the vertical, horizontal, and diagonal directions with respect to the assembly table.

Next, Patent Document 2 discloses an invention relating to a pedestal for a mobile power cable under the name of "a pedestal for a mobile power cable and a method for installing and removing the pedestal for a mobile power cable".
Hereinafter, the invention disclosed in Patent Document 2 will be described. The invention disclosed in Patent Document 2 includes a base installed on the ground and a pillar body fixed to the base and extending upward, and a base supporting the weight of a cable head included in a mobile power cable and a base. A turntable equipped with a bracket for mounting the cable head on one end side that is rotatably attached around the horizontal axis and changes its height by rotation, and the rotation range of the turntable, with the cable head facing sideways. It is characterized by having a restricting part that regulates between the mounting position to be mounted on the bracket and the usage position that puts the cable head in the vertical use state, and a fixing part that fixes the position of the turntable to the use position. And.
In the invention having such characteristics, the rotary table is rotated to be horizontal so that the cable head is attached to the bracket located at a relatively low position, and then the rotary table is rotated along the vertical direction. Therefore, it is configured to lift the cable head to a high place. Therefore, by setting the rotary table to a required length, the mobile power cable can be lifted to a desired height. Therefore, it is possible to reduce the work load for installing the mobile power cable on the gantry without increasing the occupied area of the device.

JP-A-2007-104882 Japanese Unexamined Patent Publication No. 2013-93940

In the invention disclosed in Patent Document 1, by moving the movable bracket, it is possible to eliminate the burden of moving the moving power cable forward and backward. However, since it is considered that the movable bracket is moved manually, it is difficult to move the cable head to a height of 2 m or more unless the operator uses a workbench or scaffolding separately. It cannot be said that the problem can be solved sufficiently.

Next, in the invention disclosed in Patent Document 2, since the rotary table is first tilted in the horizontal direction, it is easy to attach the cable head to the bracket, but a certain amount of installation space is required. However, since the land area of the power generation / substation is usually secured only to the minimum necessary, the equipment spacing is designed to be narrow. Therefore, especially when the length of the rotary table is to be several m or more, there is a possibility that the installation space in the horizontal direction is insufficient and the table cannot be installed. That is, the installation location is limited, and there is a risk of lacking versatility.
Further, even if the installation space can be secured, the burden of preparatory work and the like is not reduced because a scaffolding or the like for arranging the worker in a high place is required separately. Therefore, it cannot be said that the invention disclosed in Patent Document 2 can sufficiently solve the conventional problems.

The present invention has been made in response to such a conventional situation, the head of the moving cable can be held at a desired height, and the scaffolding or the like is not separately assembled, and the worker is at that height. It is an object of the present invention to provide a mobile cable mount that can further reduce the work load because the cable head can be easily contacted with the cable head.

In order to achieve the above object, the first invention is a mobile cable pedestal for holding a mobile cable in a desired position, in which a base installed on the ground and the base are spaced apart from each other. A pedestal in which at least one of a moving cable head and a support insulator connected to the head via a lead wire, which is suspended between the tips of the plurality of pillars and is suspended from the plurality of pillars to be erected, is locked. One end and the other end are connected to a base and a plurality of columns, respectively, and a plurality of reinforcing members are provided to supplementally support the plurality of columns. It is characterized by comprising a movable pillar that moves up and down along the above, and a first raising and lowering means for fixing the movable pillar to the fixed pillar so as to be able to move up and down.

In the invention having such a configuration, for example, the fixed pillar and the movable pillar have a U-shaped cross section, so that the movable pillar is housed inside the fixed pillar, and the first elevating means is provided along the movable pillar. It is conceivable that the slide moves in the vertical direction through the slide. Further, as the first elevating means, a hydraulic control device fixed inside the fixed pillar to support the lowermost part of the movable pillar, a worm wheel installed on the fixed pillar, and a worm wheel attached to the movable pillar and meshed with the worm wheel. A manual or electric operating means such as a handle or a motor for rotating the worm wheel is used.
In the invention of the above configuration, for example, after setting the lengths of the plurality of columns to the shortest state in advance, the base is installed on the ground adjacent to the transformer, and the head of the moving cable is placed at the tip of the column. By locking on the suspended pedestal and raising the movable column by the first elevating means, the head of the moving cable is held at the desired height. At this time, one end and the other end are connected to the base and the support respectively, and the plurality of columns are supplementarily supported by the reinforcing member installed at an angle with respect to the base, so that the movement is heavy. Even when the cable is held, the column is prevented from tilting or tipping over.
In addition to the head of the moving cable, the pedestal may be provided with a support insulator to which the head is connected via a lead wire. Further, the support insulator is connected to the primary side bushing of the transformer and the bushing of the circuit breaker via the second lead wire.

Next, in the second invention, in the first invention, a work floor that moves up and down along the fixed pillars is provided between the plurality of fixed pillars, and the work floor is provided on each of the plurality of fixed pillars. It is characterized in that it is held so as to be able to move up and down with respect to the fixed pillar via the second raising and lowering means of the above.
In the invention having such a configuration, as the second elevating means, for example, hydraulic control means installed on each of a plurality of fixed columns can be considered. The second elevating means is connected to a pair of end faces of the work floor facing the second elevating means.
In the invention having the above configuration, in addition to the action of the first invention, by driving the second elevating means, the work floor on which the worker is previously placed follows the height position of the head of the moving cable. Go up and down.

Subsequently, in the third invention, in the second invention, the support column is provided with an erection member for erecting the base end detachably with respect to the installation portion provided on the end face side of the base, and the reinforcing member is a reinforcing member. A first fixing member that detachably fixes one end to a fixing portion provided on the end face of the base, and a second fixing member that rotatably fixes the other end to a rotating shaft provided on the fixing column. It is characterized by having a member.
In the invention having such a configuration, in addition to the action of the second invention, the support column and the reinforcing member are both removable via the erection member and the first and second fixing members. Only when a mobile cable mount is used, the stanchions and reinforcing members can be attached to the base. In addition, the columns and reinforcing members can be left removed from the base during storage or movement other than this.
Of these, in the second fixing member, the other end of the reinforcing member is rotatably fixed, so that the reinforcing member is parallel to the column when the column and the reinforcing member are removed from the base.

Further, in the fourth invention, in the second or third invention, a connecting means is provided above the second elevating means, and the connecting means is a tubular member whose long axis is arranged along the horizontal direction. It consists of a pair of insertion holes that penetrate the short axis of this tubular member along the horizontal direction, and a fastening member through which the front end and the rear end are inserted into the pair of insertion holes, respectively. Each of the shaft bodies is provided with a shaft body to be inserted into the tubular member, and the shaft body is arranged with first and second through holes through which the fastening member can penetrate at a distance along the longitudinal direction of the shaft body. The first through hole is pierced parallel to the floor surface of the work floor, and the second through hole is pierced orthogonally to the floor surface.

In the invention having such a configuration, a bolt and a nut screwed to the bolt can be considered as the fastening member constituting the connecting means. Further, "passed through either the first or second insertion hole" means that the fastening member is inserted into either the first or second insertion hole at different timings.
In the invention having the above configuration, in addition to the action of the second or third invention, each shaft body protruding from both end faces of the work floor is always inserted into the annular member of the connecting member. When using a work floor, the fastening member penetrates one of the insertion holes of the tubular member, the first through hole of the shaft body, and the other insertion hole of the tubular member, and is fixed so as not to fall off. .. Here, since the pair of insertion holes are provided along the horizontal direction and the first through hole is penetrated in parallel with the floor surface of the work floor, the fastening member is fixed so as not to fall off. And the floor along the horizontal direction is held by the fixed pillars.

On the other hand, when the work floor is not used, the fastening member penetrates one of the insertion holes of the tubular member, the second through hole of the shaft body, and the other insertion hole of the tubular member, and cannot fall off. Is fixed to. Here, since the second through hole is penetrated orthogonally to the floor surface of the work floor, when the fastening member is fixed so as not to fall off, the floor surface along the vertical direction is held by the fixed pillar. Will be done.
The selection of the first through hole and the second through hole when inserting the fastening member is because the first and second through holes are arranged at a distance along the longitudinal direction of the shaft body. , It is done by sliding the work floor along the horizontal direction.

A fifth aspect of the invention comprises a fall prevention means for preventing a support from falling in any of the first to fourth aspects of the fifth invention, wherein one end of the fall prevention means is connected to a plurality of fixed columns. It is characterized in that it is composed of a plurality of elongated portions to be formed and a ground mounting portion suspended from other ends of the plurality of elongated bodies and installed on the ground.
In the invention of such a configuration, the load of the moving cable or the worker is applied to the ground-mounted portion via the plurality of long portions. As a result, a frictional force is generated between the ground-installed portion and the ground, and the ground-installed portion is prevented from shifting on the ground. That is, since the support column in which a plurality of long portions are erected is auxiliaryly supported, the support column is prevented from tipping over.

In addition, the sixth invention is characterized in that the pedestal is provided with a bracket to which the head of the moving cable is locked and a fixing base to which the support insulator is fixed via the fixing means.
In the invention of such a configuration, both the head of the moving cable and the support insulator are held by the pedestal, but the head and the support insulator do not necessarily have to be held at the same time. This is because the support insulator is used to hold the lead wire when the lead wire connecting the head and the bushing of the transformer or the like has a certain length or more. The fixing base is, for example, a part of the pedestal where a bolt hole is provided, and the fixing means in this case is a bolt inserted into the bolt hole and a nut screwed into the bolt.

According to the first invention, in a low place near the ground, the lengths of the plurality of columns are set to the shortest state in advance, and then the head of the moving cable is locked to the pedestal. Wherever the head can be attached to the pedestal. After that, by raising the movable pillar by the first elevating means, the head of the moving cable is held at a desired height, so that it is not necessary to assemble a scaffold or the like as in the conventional case. Therefore, it is possible to reduce the work load and time for preparing materials and assembling them in the preparatory work. At this time, even when the moving cable, which is a heavy object, is held by the reinforcing member, the support column is prevented from tilting or tipping over, so that the safety of the worker can be ensured.

According to the second invention, in addition to the effect of the first invention, the work floor and the second elevating means so that the work floor on which the worker is previously placed follows the height position of the head of the moving cable. Since it goes up and down, the worker can easily contact the head and the support insulator at a high place. Therefore, it is possible to further reduce the burden of connecting and separating the moving cable and the support insulator or bushing by the lead wire.

According to the third invention, in addition to the effect of the second invention, by providing the erection member and the first and second fixing members, the moving cable pedestal is assembled and used only when necessary. Can be done. Therefore, it is possible to install a mobile cable mount in a short time not only for temporary power supply measures but also for emergency recovery. In addition, the storage space is small when not in use, and transportation is easy.

According to the fourth invention, in addition to the effect of the second or third invention, the floor surface of the work floor is changed to be horizontal or vertical by sliding the work floor along the horizontal direction. be able to. Therefore, when separating the support and the reinforcing member from the base, the work floor can be tilted in the same direction as the support, so that the mobile cable stand can be stored compactly when not in use, which is convenient. Is.

According to the fifth invention, in addition to the effect of any one of the first to fourth inventions, since the support column is prevented from falling by the fall prevention means, the worker is placed on the work floor arranged at a high place. By riding, accidents can be reliably prevented when the center of gravity is located at a high place, which is particularly effective.

According to the sixth invention, in addition to the effect of any one of the first to fifth inventions, since the bracket and the fixing base are provided on the pedestal, both the head of the moving cable and the support insulator can be held. Is.

It is a perspective view which shows the appearance of the pedestal for a moving cable which concerns on embodiment. (A) is a view in the direction of arrow A in FIG. 1 of the base end of the support column constituting the mobile cable pedestal according to the embodiment, and (b) is a view of one end of the reinforcing member constituting the mobile cable pedestal. It is the A direction arrow view in 1. (A) is an arrow view in the A direction in FIG. 1 at the other end of the reinforcing member constituting the mobile cable mount according to the embodiment, and (b) is an arrow view in the C direction at the other end (a). be. It is a perspective view which shows the connecting means which constitutes the pedestal for a moving cable which concerns on embodiment, and the shaft body of a work floor. (A) is a view in the direction of arrow B in FIG. 1 of the work floor constituting the mobile cable mount according to the embodiment, and (b) is the direction of the work floor indicated by (a) centered on the axis. It is a B-direction arrow view in a state of being rotated by 90 °. (A) is a view taken in the direction of arrow B in FIG. 1 of a pedestal constituting the mobile cable pedestal according to the embodiment, and (b) is a perspective view of the pedestal. (A) is a view taken along the line B of FIG. 1 of the bracket and the fixed base constituting the mobile cable mount according to the embodiment, and (b) is the arrow of the bracket and the fixed base in the C direction in (a). It is a visual view. (A) and (b) are front views for demonstrating the raising and lowering action of the columns constituting the moving cable pedestal according to the embodiment, respectively. It is a usage state diagram of the pedestal for a moving cable which concerns on embodiment. It is a usage state diagram of the pedestal for a moving cable which concerns on embodiment. It is a perspective view when the fall prevention means is added to the pedestal for a moving cable which concerns on embodiment.

The mobile cable mount according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 11. FIG. 1 is a perspective view showing the appearance of the mobile cable mount according to the embodiment.
As shown in FIG. 1, the mobile cable pedestal 1 according to the embodiment is a mobile cable pedestal for holding the mobile cable 50 (see FIGS. 9 and 10) at a desired position.
The mobile cable mount 1 includes a base 2 installed on the ground G, a plurality of columns 3 and 4 erected on the base 2 at intervals from each other, and tips 3a of the plurality of columns 3 and 4. With the pedestal 11 suspended from 4a to each other and to which the head 50a of the moving cable 50 (see FIG. 7B) and the support insulator 51 connected to the head 50a via the lead wire 52 (see FIG. 9) are locked. One end 12a to 15a and the other end 12b to 15b are connected to the base 2 and the plurality of columns 3 and 4, respectively, and include a plurality of reinforcing members 12 to 15 that supplementarily support the plurality of columns 3 and 4. The weight of each of the head 50a and the support insulator 51 of the moving cable 50 is about 50 kg, respectively.

The base 2 is bridged between a pair of square steel pipes 2a and 2a installed in a direction orthogonal to the longitudinal direction X of the pedestal 11 and the square steel pipes 2a and 2a, and is bridged to the square steel pipes 2a and 2a. It consists of a fixed metal flat plate 2b. Therefore, the outer surfaces of the square steel pipes 2a and 2a are the end faces 2e and 2e of the base 2, and the end faces 2e and 2e are orthogonal to the longitudinal direction X of the pedestal 11. Since the thicknesses of the square steel pipe 2a and the metal flat plate 2b are about 4 cm and 1 cm, respectively, the surface of the metal flat plate 2b is located at a height of about 5 cm from the ground G.
Further, the reinforcing members 12 and 13 are inclined and fixed with respect to the support columns 3 at inclination angles α and β, respectively, and although not shown in FIG. 1, the reinforcing members 14 and 15 are inclined with respect to the support columns 4, respectively. It is tilted and fixed at angles α and β. When the reinforcing members 12 and 13 are parallel to the support column 3 and when the reinforcing members 14 and 15 are parallel to the support column 4, the inclination angles α and β are both 0 degrees.

The columns 3 and 4 include fixed columns 5 and 6 including their base ends 3b and 4b, movable columns 7 and 8 including tips 3a and 4a and moving up and down along the fixed columns 5 and 6, and the movable columns 7 and 4. The first elevating means 9 and 10 for fixing the 8 to the fixed columns 5 and 6 so as to be elevated are provided.
The fixed columns 5 and 6 and the movable columns 7 and 8 are all steel materials having a U-shaped cross section. Therefore, the movable columns 7 and 8 and the first elevating means 9 and 10 are housed inside the fixed columns 5 and 6, respectively. Of these, the movable columns 7 and 8 slide in the vertical direction along the fixed columns 5 and 6 via the first elevating means 9 and 10. More specifically, the lengths of the fixed columns 5 and 6 are about 230 cm, and the lengths of the movable columns 7 and 8 are about 80 cm.

Further, as the first elevating means 9 and 10, the hydraulic cylinders 16a and 16a fixed inside the fixed columns 5 and 6 near the base ends 3b and 4b to support the movable columns 7 and 8, respectively, and the fixed columns 5 A hydraulic pump (not shown) fixed to the outer surface of each of 6 and controlling the operation of the hydraulic cylinders 16a and 16a and a hydraulic hose (not shown) connecting the hydraulic pump and the hydraulic cylinders 16a and 16a are used. Ru. This hydraulic pump is on / off controlled by a switch 16b attached to the outer end surface 6a of the fixed column 6.
Specifically, the hydraulic cylinders 16a and 16a accommodate a multi-stage piston, and the maximum stroke thereof is about 210 cm. The height of the upper ends of the hydraulic cylinders 16a and 16a from the metal flat plate 2b is about 40 cm. Therefore, the minimum height of the pedestal 11 is about 120 cm from the metal flat plate 2b, and the maximum height that can be reached is about 330 cm from the metal flat plate 2b.

Further, the moving cable pedestal 1 is provided with a work floor 17 that moves up and down along the fixed pillars 5 and 6 between the fixed pillars 5 and 6.
The work floor 17 is a rectangular metal flat plate, and its long side is installed parallel to the longitudinal direction of the pedestal 11. Further, the work floor 17 is held so as to be able to move up and down with respect to the fixed pillars 5 and 6 via a plurality of second raising and lowering means 18 and 19 provided on the fixed pillars 5 and 6, respectively.
The second elevating means 18 and 19 include hydraulic cylinders 20a and 20a fixed inside the fixed columns 5 and 6 near the base ends 3b and 4b to support the work floor 17, and outside the fixed columns 5 and 6, respectively. A hydraulic pump (not shown) fixed to the surface and controlling the operation of the hydraulic cylinders 20a and 20a and a hydraulic hose (not shown) connecting the hydraulic pump and the hydraulic cylinders 20a and 20a are used. This hydraulic pump is on / off controlled by a switch 20b attached to the outer end surface 5a of the fixed column 5.

Specifically, the hydraulic cylinders 20a and 20a accommodate a multi-stage piston, and the maximum stroke thereof is about 180 cm. The height of the upper ends of the hydraulic cylinders 20a and 20a from the metal flat plate 2b is about 25 cm. Therefore, the minimum height of the work floor 17 is about 30 cm from the metal flat plate 2b, and the maximum height that can be reached is about 210 cm from the metal flat plate 2b.
The first elevating means 9 and the second elevating means 18, and the first elevating means 10 and the second elevating means 19 are spaced inside the fixed columns 5 and 6 so as not to interfere with each other. Each will be installed.

Next, the configurations of the columns and the reinforcing members constituting the mobile cable mount according to the embodiment will be described in detail with reference to FIGS. 2 and 3. FIG. 2A is an arrow view in the A direction in FIG. 1 at the base end of the support column constituting the mobile cable pedestal according to the embodiment, and FIG. 2B is a reinforcing member constituting the mobile cable pedestal. It is the A direction arrow view in FIG. 1 at one end. The components shown in FIG. 1 are designated by the same reference numerals in FIG. 2, and the description thereof will be omitted.
As shown in FIG. 2A, the support column 3 includes an erection member 21 that detachably erects the base end 3b with respect to the installation portion 2c provided on the end surface 2e side of the base 2.
Of these, the installation portion 2c is an arbitrary area on the surface of the metal flat plate 2b. Further, the erection member 21 penetrates the flat metal piece 21a that is in close contact with both the base end 3b of the support column 3 and the square steel pipe 2a of the base 2, and the outer end surface 5a of the metal piece 21a and the fixed pillar 5. It is composed of a fastening member 21b to be fastened, a metal piece 21a, and a fastening member 21c penetrating the square steel pipe 2a. The fastening member 21b is a combination of a bolt 21B and a nut 21N screwed to the shaft portion of the bolt 21B. Similarly, the fastening member 21c is a combination of the bolt 21B'and the nut 21N' screwed to the shaft portion of the bolt 21B'. Therefore, by removing any of the nuts 21N and 21N'of the fastening members 21b and 21c from the bolts 21B and 21B', the support column 3 is removed from the base 2. The support column 4 is also provided with the same upright member 21 as the support column 3.

Further, as shown in FIG. 2B, the reinforcing member 12 includes a first fixing member 22 that detachably fixes one end 12a to the fixing portion 2d provided on the end surface 2e of the base 2.
Of these, the fixing portion 2d is an arbitrary area on the end face 2e. Further, the first fixing member 22 is a fastening member that penetrates one end 12a of the reinforcing member 12 and the square steel pipe 2a. The first fixing member 22 is a combination of a bolt 22B and a nut 22N screwed to the shaft portion of the bolt 22B. Therefore, by removing the nut 22N from the bolt 22B, the reinforcing member 12 is removed from the base 2. The reinforcing members 13 to 15 also include the first fixing member 22 as in the reinforcing member 12.

3A is an arrow view in the direction A of FIG. 1 at the other end of the reinforcing member constituting the mobile cable mount according to the embodiment, and FIG. 3B is an arrow at the other end of the reinforcing member. It is a C-direction arrow view. The components shown in FIGS. 1 and 2 are designated by the same reference numerals in FIG. 3, and the description thereof will be omitted.
As shown in FIG. 3A, the auxiliary members 12 and 13 have a second fixing member 24 that rotatably fixes the other ends 12b and 13b to the rotation shaft 23 provided on the fixed pillar 5. Be prepared.
The rotating shaft 23 is a bolt 23B that penetrates the outer end surface 5a of the fixed pillar 5, and a nut 23N is screwed into the shaft portion of the bolt 23B.
The second fixing member 24 is an annular member 24a, 24b formed on the other ends 12b, 13b of the reinforcing members 12, 13, respectively, and locked to the rotation shaft 23. The reinforcing members 13 to 15 also include a second fixing member 24 as in the reinforcing member 12.

As shown in FIG. 3B, the other ends 12b and 13b of the reinforcing members 12 and 13 are rotatable about the central axis of the bolt 23B as shown by the _{double -} headed arrow directions X1 and X2, respectively. .. Therefore, when the nut 23N is tightened, the inclination angles α and β each have a constant size, and the reinforcing members 12 and 13 are non-rotatably fixed to the fixed pillar 5. However, when the nut 23N is loosened, the inclination angles α and β become 0 degrees, respectively, and the reinforcing members 12 and 13 are parallel to the fixed column 5, respectively.

Further, the configuration and operation of the work floor will be described in detail with reference to FIGS. 4 and 5. FIG. 4 is a perspective view showing a connecting means constituting the mobile cable mount according to the embodiment and a shaft body of the work floor. 5 (a) is a view taken along the line B in FIG. 1 of the work floor constituting the mobile cable mount according to the embodiment, and FIG. 5 (b) shows the direction of the work floor indicated by (a). It is a B direction arrow view of the state rotated by 90 ° about the axis. The components shown in FIGS. 1 to 3 are designated by the same reference numerals in FIGS. 4 and 5, and the description thereof will be omitted.
As shown in FIGS. 4 and 5, in the moving cable mount 1, the connecting means 25 is provided above the second elevating means 19 of the fixed pillar 6.
The connecting means 25 penetrates the tubular member 26 whose long axis is arranged along the horizontal direction and parallel to the longitudinal direction X of the pedestal 11 and the short axis of the tubular member 26 along the horizontal direction. It consists of a pair of insertion holes 27a and 27b and a fastening member 28 (see FIG. 5) into which the front end 28a and the rear end 28b are inserted into the pair of insertion holes 27a and 27b, respectively. The fastening member 28 is a combination of a bolt 28B and a nut 28N screwed to the shaft portion of the bolt 28B. Similarly, the connecting means 25 is also provided above the second elevating means 18 of the fixed pillar 5.

Further, the work floor 17 is provided with shaft bodies 17a and 17b that are constantly inserted into the tubular member 26 on both end faces orthogonal to the longitudinal direction X of the pedestal 11.
In the shaft body 17a, a first through hole 29a and a second through hole 29b through which the fastening member 28 can penetrate are arranged at a distance along the longitudinal direction of the shaft body 17a. Of these, the first through hole 29a is pierced in parallel to the floor surface 17c of the work floor 17, and the second through hole 29b is pierced orthogonally to the floor surface 17c. The same applies to the shaft body 17b.
However, in the shaft body 17a, the second through hole 29b and the first through hole 29a are provided in this order from the side closer to the floor surface 17c of the work floor 17. In the shaft body 17b, the first through hole 29a and the second through hole 29b are provided in this order from the side closer to the floor surface 17c.

Therefore, as shown in FIG. 5A, in the shaft body 17a, the fastening member 28 penetrates the insertion holes 27a and 27b of the tubular member 26 and the first through hole 29a, and is fixed so as not to fall off. In the shaft body 17b, when the fastening member 28 penetrates the insertion holes 27a, 27b and the first through hole 29a and is fixed so as not to fall off, the floor surface 17c becomes horizontal and the connecting means 25, 25 and the second. It is held so as to be able to move up and down with respect to the fixed columns 5 and 6 via the raising and lowering means 18 and 19.
On the other hand, as shown in FIG. 5B, in the shaft bodies 17a and 17b, the fastening members 28 and 28 penetrate the insertion holes 27a and 27b and the second through holes 29b and 29b, respectively, and are fixed so as not to fall off. Then, the work floor 17 rotates 90 degrees with respect to the case shown in FIG. 5A about the shaft bodies 17a and 17b, and the floor surface 17c becomes along the vertical direction, so that the fixed columns 5 and 6 are formed. It is held so that it can be raised and lowered.
The selection of the first through hole 29a and the second through hole 29b when inserting the fastening member 28 is to select the work floor 17 along the long axis direction of the shaft bodies 17a and 17b, that is, along the longitudinal direction X of the pedestal 11. It is done by sliding it horizontally.

Then, the configuration of the pedestal suspended between the tips of the columns will be described in detail with reference to FIGS. 6 and 7. FIG. 6A is a view taken in the direction of arrow B in FIG. 1 of the pedestal constituting the mobile cable pedestal according to the embodiment, and FIG. 6B is a perspective view of the pedestal. 7 (a) is a view taken in the direction of arrow B in FIG. 1 of a bracket and a fixed base constituting the mobile cable mount according to the embodiment, and FIG. 7 (b) is a view of the bracket and the fixed base of the bracket and the fixed base (a). It is a C-direction arrow view in. The components shown in FIGS. 1 to 5 are designated by the same reference numerals in FIGS. 6 and 7, and the description thereof will be omitted.
As shown in FIGS. 6A and 6B, the pedestal 11 that moves up and down along the vertical direction V is suspended between the tips 3a and 4a of the columns 3 and 4, that is, the tips of the movable columns 7 and 8. The cross section is a U-shaped steel material. On the ceiling surface 11a of the pedestal 11, three sets of a plurality of fixing holes 11b for inserting fixing means for fixing the support insulator 51 (see FIG. 1) are bored.

As shown in FIGS. 7A and 7B, the pedestal 11 has a ring-shaped bracket 30 to which the head 50a of the moving cable 50 is locked, and a screw body 32 to which the support insulator 51 is a fixing means. A fixing base 31 fixed via the fixing base 31 and a support 33 to which the bracket 30 is fixed via a screw body (not shown) are provided.
Of these, the fixing base 31 is provided with a plurality of fixing holes 31a at locations corresponding to the three sets of fixing holes 11b (see FIG. 6), and is screwed into the screw holes provided at the bottom of the support insulator 51. The body 32 can be inserted. Further, the support 33 is supported by the fixing base 31 via the bolt 33B and the nut 33N screwed to the shaft portion of the bolt 33B.

Further, the operation of the mobile cable mount 1 will be described in detail with reference to FIG. 8 (a) and 8 (b) are front views for explaining the raising and lowering action of the columns constituting the mobile cable mount according to the embodiment, respectively. The components shown in FIGS. 1 to 7 are designated by the same reference numerals in FIG. 8, and the description thereof will be omitted.
In FIG. 8A, the work floor 17 is moved by operating the first elevating means 9 and 10 to lower the pedestal 11 to the lowest position and moving the second elevating means 18 and 19. It shows the state of being lowered to the lowest position. As described with reference to FIG. 1, since the minimum height of the pedestal 11 is about 120 cm from the metal flat plate 2b, the worker 53 makes the pedestal 11 reach the pedestal 11 while standing on the ground G to support the pedestal 11. The insulator 51 can be attached to the pedestal 11.

FIG. 8B shows a case where the pedestal 11 is raised to the highest position and the work floor 17 is raised to the highest position. As described with reference to FIG. 1, the maximum height that the pedestal 11 can reach is about 330 cm from the metal plate 2b, and the maximum height that the work floor 17 can reach is about 210 cm from the metal plate 2b. Therefore, by standing on the work floor 17, the worker 53 can reach the height of the raised pedestal 11 or higher and easily connect the lead wire 52 to the tip of the support insulator 51.

Next, the usage state of the mobile cable mount according to the embodiment will be described in detail with reference to FIGS. 9 and 10. 9 and 10 are phase diagrams of the mobile cable mount according to the embodiment. The components shown in FIGS. 1 to 8 are designated by the same reference numerals in FIGS. 9 and 10, and the description thereof will be omitted.
As shown in FIG. 9, one mobile cable mount 1 is installed adjacent to the circuit breaker 54. The head 50a of the moving cable 50 locked to the pedestal 11 of the moving cable pedestal 1 and the bushing 54a of the circuit breaker 54 are connected by a lead wire 52. Since the height of the tip of the bushing 54a from the ground G is about 200 cm, the height of the pedestal 11 in the moving cable pedestal 1 from the ground G is set to the same height of 200 cm, so that the length of the lead wire 52 is long. The height can be as short as possible. Further, the lead wire 52 and the bushing 54a are connected by a worker 53 (not shown in FIG. 9) using a stepladder or the like.

As shown in FIG. 10, two mobile cable mounts 1a and 1b are installed side by side adjacent to the transformer 55. The configurations of the mobile cable mounts 1a and 1b are the same as those of the mobile cable mounts 1.
The head 50a of the moving cable 50 locked to the pedestal 11 of the moving cable pedestal 1a and the support insulator 51 fixed to the pedestal 11 of the moving cable pedestal 1b are connected by a lead wire 52a. Further, the support insulator 51 and the primary side bushing 55a of the transformer 55 are connected by a lead wire 52b. The lead wire 52b and the primary side bushing 55a are connected by a worker 53 (not shown in FIG. 10) climbing the ceiling surface of the transformer 55.
Further, since the height of the tip of the primary side bushing 55a is about 370 cm from the ground G, the head 50a of the moving cable 50 held on the moving cable mount 1a and the primary side bushing 55a are shown in FIG. When trying to connect directly with one lead wire 52 as shown, it is necessary to set the lead wire 52 to be long. In this case, as described above, the lead wire 52 tends to fluctuate, and in order to prevent this, another mobile cable pedestal 1b is arranged between the transformer 55 and the mobile cable pedestal 1a. ..

In the moving cable pedestal 1a, the height of the pedestal 11 is about 230 cm from the ground G. On the other hand, in the moving cable pedestal 1b, the height of the pedestal 11 is about 270 cm from the ground G. Further, the lengths of the head 50a and the support insulator 51 are both about 90 cm.
Therefore, the lengths of the lead wires 52a and 52b can both be shorter than the length of the lead wires 52 when the head 50a of the moving cable 50 and the primary side bushing 55a are directly connected by the lead wires 52.

Further, the fall prevention means used at the same time as the moving cable mount 1 of the embodiment will be described in detail with reference to FIG. 11. FIG. 11 is a perspective view when a fall prevention means is added to the mobile cable mount according to the embodiment. The components shown in FIGS. 1 to 10 are designated by the same reference numerals in FIG. 11 and the description thereof will be omitted.
As shown in FIG. 11, the moving cable pedestal 1 is provided with a fall prevention means 34 for preventing the columns 3 and 4 from toppling over.
The fall prevention means 34 includes a plurality of long bodies 35, 35 in which one end portion 35a, 35a is connected to a plurality of fixed columns 5, 6, respectively, and other ends of the plurality of long bodies 35, 35. It is composed of a ground installation portion 36 which is suspended from 35b and 35b and installed on the ground G.

Specifically, the long body 35 is a steel material, and the ground installation portion 36 is a metal flat plate. One end portion 35a, 35a is a fixed pillar via a metal piece 35c, 35c, a bolt and a nut (not shown) penetrating the metal pieces 35c, 35c and the front end surfaces 5b, 6b of the fixed pillars 5, 6. It is fixed to 5 and 6. Similarly, the other ends 35b and 35b are also fixed to the surface of the ground mounting portion 36 via metal pieces 35d and 35d and bolts and nuts (not shown).
Further, an uneven surface (not shown) is formed on the back surface of the ground installation portion 36 on the side in close contact with the ground G, and the uneven surface is configured to increase the frictional force between the ground installation portion 36 and the ground G. You may.

The method of assembling and installing the mobile cable mount 1 having the above-described configuration will be described below. First, the base 2 is installed on the ground G on the side of the circuit breaker 54 or the like. Next, the fixed columns 5 and 6 in which the pedestal 11 is lowered to the lowest height in advance are erected on the pedestal 2 by the erection member 21. Further, the reinforcing members 12 to 15 are fixed to the fixing columns 5 and 6 and the base 2 by the first fixing member 22 and the second fixing member 24, respectively. Then, the head 50a and the support insulator 51 of the moving cable 50 are selected and appropriately locked or fixed to the bracket 30 and the fixing base 31 of the pedestal 11, respectively.
After that, if necessary, the long bodies 35 and 35 of the fall prevention means 34 are fixed to the fixed pillars 5 and 6, respectively, to prevent the fixed pillars 5 and 6 from falling due to the load of the worker 53 and the moving cable 50. good. Next, when the switch 16b is operated to raise the movable columns 7 and 8, the head 50a and the like are held at a desired height.

Further, when it is necessary to hold the head 50a or the like at a height of, for example, 150 cm or more from the ground G, it is desirable to use the work floor 17. Therefore, before operating the switch 16b, the fastening members 28 and 28 are passed through the insertion holes 27a and 27b of the tubular member 26 and the first through holes 29a of the shaft bodies 17a and 17b, respectively, and fixed so as not to fall off. Then, the floor surface 17c of the work floor 17 is held by the fixed columns 5 and 6 in a state along the horizontal direction. Therefore, the worker 53 stands on the work floor 17 in advance and operates the switch 20b attached to the outer end surface 5a of the fixed pillar 5 to raise the work floor 17 to an appropriate height. Then, since the hand easily reaches the head 50a or the like, the head 50a or the like and the bushing of the circuit breaker 54 or the like can be connected via the lead wire 52.

When the temporary power supply countermeasure work or the like is completed, the fixed columns 5 and 6, the reinforcing members 12 to 15, and the fall prevention means 34 are removed from the base 2 and the fixed columns 5 and 6 by the reverse procedure of the above. As a result, the reinforcing members 12 to 15 rotate about the rotation shaft 23 so that the inclination angles α and β become 0 degrees, and are in a state parallel to the fixed columns 5 and 6.
After that, when the fastening members 28 and 28 are passed through the insertion holes 27a and 27b and the second through holes 29b of the shaft bodies 17a and 17b and fixed so as not to fall off, the floor surface 17c of the work floor 17 becomes the fixing columns 5 and 6. It is held in a non-rotatable state in a parallel state. Therefore, when viewed from the side, the fixed columns 5 and 6 and the work floor 17 have a vertically elongated shape, so that the mobile cable mount 1 can be compactly accommodated when not in use.

As described above, according to the mobile cable pedestal 1 according to the embodiment, the pedestal 2 and the columns 3 and 4 can be separately transported when the pedestal 1 is installed or removed, which reduces labor. be able to. Further, the moving cable pedestal 1 is provided with the erection member 21, the first fixing member 22, and the second fixing member 24, so that it can be assembled and used only when necessary.
Therefore, it is possible to install the mobile cable mount 1 at a desired position in a short time not only for temporary power supply countermeasure work but also for emergency recovery response. It is also effective in that it requires a small storage space when not in use.
Further, the mobile cable mount 1 can be assembled and disassembled by a simple method of tightening and loosening the nuts of the base 2 and the fixed columns 5 and 6, and the base 2 and the reinforcing members 12 to 15. , Easy to handle.

In addition, according to the mobile cable mount 1, as shown in FIG. 8A, the head 50a and the support insulator 51 of the mobile cable 50 are locked and fixed to the pedestal 11 at a low place near the ground G, respectively. can do. Therefore, the working posture and feet of the worker 53 are stable, the burden of lifting the heavy moving cable 50 and the like can be greatly reduced, and the safety of the worker can be ensured. At this time, the reinforcing members 12 to 15 prevent the columns 3 and 4 from tilting or tipping over even when the moving cable 50 is held, so that safety can be further ensured.

Then, by operating the switch 16b of the first elevating means 9 and 10, as shown in FIG. 8B, the moving cable 50 and the like can be quickly moved to a height that could not be reached in the past. Can be raised. Therefore, unlike the conventional method, it is not necessary to build a scaffold or transport a large amount of materials, so that it is possible to reduce the labor of preparatory work, shorten the construction period, and reduce the cost. ..
Further, according to the moving cable mount 1, the work floor 17 on which the worker 53 is placed moves up and down so as to follow the height position of the head 50a of the moving cable 50, so that the worker 53 moves up and down at a high place. The head 50a and the support insulator 51 can be easily contacted. Therefore, the burden of connecting and separating the moving cable 50 and the support insulator 51 and the like by the lead wire 52 can be further reduced.

Further, according to the moving cable pedestal 1, since the bracket 30 and the fixing pedestal 31 are provided on the pedestal 11, both the head 50a and the support insulator 51 can be held. Therefore, in addition to the use as a stand for a mobile cable as shown in FIG. 9, there is a use as a support insulator pillar as shown in FIG. 10, which is highly convenient. In the case shown in FIGS. 9 and 10, the lengths of the lead wires 52, 52a and 52b can be shortened as much as possible, so that the lead wires 52, 52a and 52b sway due to wind, an earthquake or the like, resulting in a short circuit. It is possible to suitably prevent the occurrence of an accident.
Further, according to the moving cable pedestal 1, by sliding the work floor 17 along the horizontal direction, the floor surface 17c can be easily changed so as to be horizontally or vertically, so that the usability is good. be.
Further, by adding the fall prevention means 34 to the mobile cable pedestal 1, it is possible to prevent the columns 3 and 4 from toppling or breaking, and to prevent the entire mobile cable gantry 1 from toppling over. Therefore, when the moving cable 50 and the support insulator 51 are locked to the pedestal 11 arranged at a high place, and the worker 53 rides on the work floor 17, the center of gravity is located at a high place to ensure a fall accident. It can be prevented and is particularly effective. However, even when the work floor 17 is not provided, the fall prevention means 34 can be used.

The mobile cable mount according to the present invention is not limited to the one shown in the examples. For example, the lengths of the fixed columns 5, 6 and the movable columns 7, 8 and the worms 16a and 16a of the first elevating means 9 and 10 and the hydraulic cylinders 20a and 20a of the second elevating means 18 and 19 are specific. The length may be other than the length described in. Further, as the first elevating means 9 and 10, a worm gear composed of a worm and a worm wheel may be used instead of the hydraulic cylinders 16a and 16a and the hydraulic pump or the like. Further, even if the base ends 3b and 4b of the columns 3 and 4 and the installation portion 2c of the base 2 and the one ends 12a to 15a of the reinforcing members 12 to 15 and the fixing portion 2d of the base 2 are inseparably fixed, respectively. good. In addition, the work floor 17 may be omitted, or may be configured to be removable by opening the ceiling portion of the tubular member 26 of the connecting means 25.

INDUSTRIAL APPLICABILITY The present invention can be used as a mobile cable pedestal or a support insulator pillar that supports a mobile cable during temporary power supply countermeasure construction or the like.

1,1a, 1b ... Mobile cable mount 2 ... Base 2a ... Square steel pipe 2b ... Metal flat plate 2c ... Installation part 2d ... Fixed part 2e ... End face 3,4 ... Support 3a, 4a ... Tip 3b, 4b ... Base end 5,6 ... Fixed pillars 5a, 6a ... Outer end faces 5b, 6b ... Front end faces 7,8 ... Movable pillars 9,10 ... First elevating means 11 ... Pedestal 11a ... Ceiling surface 11b ... Fixing holes 12-15 ... Reinforcing members 12a to 15a ... One end 12b to 15b ... The other end 16a ... Hydraulic cylinder 16b ... Switch 17 ... Work floor 17a, 17b ... Shaft 17c ... Floor surface 18, 19 ... Second elevating means 20a ... Hydraulic cylinder 20b ... Switch 21 ... Standing member 21a ... Metal piece 21b, 21c ... Fastening member 21B, 21B'... Bolt 21N, 21N' ... Nut 22 ... First fixing member 22B ... Bolt 22N ... Nut 23 ... Rotating shaft 23B ... Bolt 23N ... Nut 24 ... Second fixing member 24a, 24b ... Circular member 25 ... Connecting means 26 ... Cylindrical member 27a, 27b ... Insertion hole 28 ... Fastening member 28a ... Front end 28b ... Rear end 28B ... Bolt 28N ... Nut 29a ... First Through hole 29b ... Second through hole 30 ... Bracket 31 ... Fixing base 31a ... Fixing hole 32 ... Screw body 33 ... Support 33B ... Bolt 33N ... Nut 34 ... Fall prevention means 35 ... Long body 35a ... One end 35b ... Other ends 35c, 35d ... Metal piece 36 ... Ground mounting part 50 ... Moving cable 50a ... Head 51 ... Supporting nuts 52, 52a, 52b ... Lead wire 53 ... Worker 54 ... Breaker 54a ... Bushing 55 ... Transformer Instrument 55a ... Primary side bushing G ... Ground α, β ... Tilt angle

Claims (4)

A mobile cable mount for holding the mobile cable in the desired position.
A base installed on the ground, a plurality of columns erected on the base at intervals from each other, and the tips of the plurality of columns are suspended from each other, and the head of the moving cable and the head and the lead wire are connected to each other. A pedestal to which at least one of the support insulators connected via the insulator is locked, and a plurality of columns having one end and the other end connected to the base and the plurality of columns to supplementally support the plurality of columns. Equipped with reinforcement members and work floor,
The pillar includes a fixed pillar including its base end, a movable pillar including the tip thereof and moving up and down along the fixed pillar, and a first raising and lowering means for fixing the movable pillar to the fixed pillar so as to be able to move up and down. Equipped with
The work floor can be raised and lowered along the fixed pillar between the plurality of fixed pillars, and can be raised and lowered with respect to the fixed pillar via a plurality of second raising and lowering means provided for each of the plurality of fixed pillars. Retained in
The support column is provided with an erection member that allows the base end to be detachably erected with respect to an installation portion provided on the end face side of the base.
The reinforcing member has a first fixing member that detachably fixes one end to a fixing portion provided on the end surface of the base, and the other end to a rotation shaft provided on the fixing column. A mobile cable mount characterized by comprising a second fixing member that is rotatably fixed. A connecting means is provided above the second elevating means, and the connecting means is provided.
This connecting means includes a tubular member whose major axis is arranged along the horizontal direction, a pair of insertion holes that penetrate the minor axis of the tubular member along the horizontal direction, and a front end and a front end of the pair of insertion holes. Each rear end consists of a fastening member through which it is inserted.
The work floor is provided with a shaft body to be inserted into the tubular member on both end faces thereof.
In the shaft body, first and second through holes through which the fastening member can penetrate are arranged at a distance along the longitudinal direction of the shaft body.
The first through hole is penetrated in parallel with the floor surface of the work floor.
The mobile cable mount according to claim 1 , wherein the second through hole is penetrated at right angles to the floor surface. Provided with a fall prevention means for preventing the support from falling,
The fall prevention means is installed on the ground by being suspended from a plurality of elongated bodies whose one end is connected to each of the plurality of fixed columns and the other ends of the plurality of elongated bodies. The mobile cable mount according to claim 1 or 2 , characterized in that it comprises a ground-mounted portion. One of claims 1 to 3 , wherein the pedestal includes a bracket to which the head of the moving cable is locked, and a fixing base to which the support insulator is fixed via a fixing means. The stand for the mobile cable described in the section.

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