JP2017159805A - Movable bracket adjustment device and flow adjustment method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable bracket adjustment device capable of accurately adjusting a flow.SOLUTION: A movable bracket regulation device, during a work for adjusting a position of the movable bracket, as a substitute for suspension wire support means of the movable bracket, temporarily retains a suspension wire against its tension. The movable bracket regulation device comprises: a body frame member (21) having clamp means detachable from/attachable to a bracket component including the suspension wire support means; a pair of rod-like members (23A, 23B) including the suspension wire support means which can hold the suspension wire, and movably supported by the body frame member while retaining a mutually parallel state; a pair of deviation adjustment means (31A, 31B) for individually moving the pair of the rod-like members in an axial direction; a sliding block (23) movable to a direction perpendicular to a moving direction of the rod-like member held by the body frame member; and sliding block feeding means (24) supported by the body frame member and capable of moving the sliding block.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a movable bracket for supporting a train line such as a trolley line or a suspended line to which a tension is applied, in particular, an adjustment apparatus used for adjusting the position of a train line support device called an O-shaped movable bracket and the same. It relates to the flow adjustment method.

A trolley wire for supplying electric power to an electric vehicle laid and running along a railway track and a train line such as a suspension wire for suspending the electric wire are fixed to a power pole provided at a predetermined interval. Are supported by a train line supporting device called “Train Line” and tension is applied by automatic tension adjusting devices provided at both ends.
In general, the trolley wire and the suspension wire are made of different metal materials, that is, materials having different linear expansion coefficients, so that they expand and contract under the influence of temperature that varies throughout the year. The automatic tension adjuster can give a certain tension even when the train lines expand and contract, but the tension of the automatic tension adjuster shifts the relative position of the trolley line and the suspension line to support these train lines. Since the force in the direction parallel to the track acts on the movable bracket and the force that deforms the movable bracket works, it is necessary to adjust the position of the fixed part of the train line in the movable bracket according to the expansion and contraction of the train line become.

  In addition, some movable brackets are provided with a hinge on the mounting base of the movable bracket so that the tip can move in the direction parallel to the track. Accordingly, an operation called flow adjustment for moving the tip of the movable bracket along the train line is performed. Conventionally, in such a flow adjustment operation, in order to temporarily release the movable bracket from the tension acting on the train line, on the side of the line (adjacent line) opposite to the train line supported by the work target movable bracket. A wire is stretched between the adjacent movable brackets that support the train line, and the wire is pulled with a tool called a shimmer, or a support column with a height of 4 to 5 m called a pole is set on the track. The pillar was temporarily subjected to the tension of the train line.

Furthermore, in the movable bracket, in order to prevent local wear of the trolley wire, the vertical position and horizontal position of the part holding the trolley wire and the suspension wire are adjusted by adjusting the position of the mounting band of the movable bracket. Some work is also done. However, since a great amount of tension acts on the trolley wire and the suspension wire, it is practically impossible to finely adjust the position of the mounting band while supporting the trolley wire or the suspension wire.
Therefore, an invention relating to a temporary pulling device for a support position adjustment work for temporarily holding the trolley line or the suspension line when adjusting the support position of the trolley line or the suspension line has been proposed (for example, a patent) Reference 1).

JP 2009-061843 A

In order to release the movable bracket from the tension acting on the train line during the flow adjustment work as described above, the conventional method using the wire and the shimmer is the preparatory work to the ground detection grounding of the adjacent line and the adjacent line. A plurality of operations such as laddering, wire attachment, and shimler tightening are required, and there is a problem that the entire operation time becomes long. Moreover, the method of using a long support column called a pedestal has a problem that the movement and installation of the pedestal becomes a large-scale work.
On the other hand, according to the train wire temporary drawing device described in Patent Document 1, the tension of the trolley wire or the suspension wire applied to the movable bracket can be temporarily received by temporarily holding the trolley wire or the suspension wire. Therefore, the flow adjustment work can also be performed. However, in that case, it is necessary to move the movable bracket by hand, and the tension of the trolley wire and the suspension wire applied to the entire movable bracket cannot be completely released, so that accurate flow adjustment is difficult. There is.

In addition, the movable bracket includes an O-shaped movable bracket that is provided at an inner position of the track curve and receives a force acting toward the utility pole due to the tension of the train line, and a track curve. There is what is called an I-type movable bracket that is provided at an outer position or the like and receives a force acting in a direction away from the utility pole due to the tension of the train line. That is, in the O-type and I-type movable brackets, the forces acting on the movable bracket due to the tension of the train line are reversed.
By the way, when adjusting the movable bracket, if the tension temporarily received is accidentally released, the train line should be set so that when the arrow is released with the bow and arrow pulled, the string suddenly returns. There is a possibility that the train line may suddenly move to a position that is not assumed by the operator in the direction opposite to the direction of the temporarily received tension. Therefore, specifically, it is necessary to devise provisions such as provision of temporary tension fittings on the side opposite to the side on which the train line moves when the temporarily received tension is accidentally released.

  The train wire temporary drawing device according to the invention of Patent Document 1 is also considered to be provided with a temporary drawing device on the side close to the utility pole in consideration of such safety. However, the train wire temporary drawing device of Patent Document 1 is a device developed corresponding to the I-type movable bracket, and can be structurally applied to the O-type movable bracket targeted by the present invention. However, if it is used for an O-shaped movable bracket, if the tension received temporarily is released accidentally, the train line may suddenly return to the opposite side of the tension that the train line temporarily received. There is sex. In Patent Document 1, it can be seen that the shape shown in FIG. 6 is an I-type movable bracket and that shown in FIG.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a movable bracket adjustment device that can easily and accurately adjust the position.
Another object of the present invention is that when used for an O-shaped movable bracket, adjustment work is performed without falling into a situation in which the temporary support is deviated and the train line moves in an unexpected direction of the operator. It is an object of the present invention to provide a movable bracket adjusting device capable of performing the above and a flow adjusting method using the same.

In order to achieve the above object, the present invention
During the operation of adjusting the position of the movable bracket supported by the support structure and extending in a direction orthogonal to the extending direction of the suspension line, the suspension line replaces the suspension line support means of the movable bracket. Is a movable bracket adjustment device capable of temporarily holding it against its tension,
A main body frame member having clamp means for detachably fixing to the bracket constituent member constituting the movable bracket and provided with the suspension wire support means;
A pair of rod-shaped members having suspension wire clamping means capable of clamping the suspension wire, and supported so as to be movable while being kept parallel to each other by the main body frame member;
A pair of displacement adjusting means for individually moving the pair of rod-shaped members in the axial direction;
A sliding block that is held by the main body frame member and is movable in a direction orthogonal to the moving direction of the pair of rod-shaped members;
And a sliding block feeding means supported by the main body frame member and capable of moving the sliding block.

  According to the above-described means, the sliding block is moved by the sliding block feeding means while temporarily holding the tension of the suspension wire by holding the suspension wire between the suspension wire clamping means and being displaced by the displacement adjusting means. By moving, the position of the movable bracket can be adjusted easily and accurately.

Here, preferably,
The main body frame member is formed in a rectangular frame shape that is long in a direction orthogonal to the moving direction of the pair of rod-shaped members,
The sliding block is slidably held between a front wall and a rear wall of the main body frame member,
The sliding block feed means is a feed screw rotatably supported between the opposing side walls of the main body frame member,
A bolt head is provided at each portion of the feed screw protruding from the side wall of the main body frame member.
According to such a configuration, the flow of the movable bracket can be adjusted by moving the movable bracket relative to the suspension line simply by operating the bolt head at the end of the feed screw with a tool and turning the feed screw. Therefore, the adjustment results are less likely to vary, and highly accurate flow adjustment is possible.

Preferably, a male screw is formed on a part of the outer periphery of the pair of rod-shaped members, and a nut is screwed to each of the male screws. When the nut is turned, the pair of rod-shaped members are moved in the axial direction. To be moved to.
According to such a configuration, by moving the pair of left and right bar-shaped members by an appropriate amount, it is possible to draw the suspension line equally to the left and right according to the shape of the line, and an unreasonable force is exerted on the movable bracket adjustment device. This can be avoided.

Furthermore, you may make it provide the scale part to which the scale which can read movement amount was attached | subjected to the outer periphery of a pair of said rod-shaped member.
According to such a configuration, the displacement of the suspension wire can be adjusted accurately by turning the nut while tightening the screw by a desired amount while looking at the scale.

According to another aspect of the present application, the movable bracket adjusting device having the above-described configuration is used, and the position of the movable bracket in the suspension line direction in which the lateral tension of the suspension line acts toward the support structure. A method of adjusting the flow of the movable bracket for adjusting
Fixing the movable bracket adjusting device by the clamp means at a position on the tip side of the bracket component member provided with the suspension line support means;
A step of holding the suspension wires by the suspension wire holding means provided on the pair of rod-shaped members, and
Operating the suspension wire support means provided on the movable bracket to release the support state of the suspension wire; and
Moving the pair of rod-shaped members in a direction opposite to the direction in which the lateral tension of the suspension line acts to release the lateral tension of the suspension line from the suspension line support means;
Operating the sliding block feeding means to move the sliding block in a desired direction by a desired amount;
Moving the pair of rod-shaped members in the direction of the base side of the bracket constituent member to release the suspended state of the suspension wire by the suspension wire clamping means;
A step of operating the suspension line support means to convert the suspension line to a state of supporting the suspension line;
And releasing the clamp state of the clamp means to remove the movable bracket adjusting device from the movable bracket.

  According to the above method, the flow of the movable bracket can be adjusted easily and accurately, and the movable bracket adjusting device can be attached to the distal end side of the movable bracket to temporarily receive the tension of the suspension line. The mounting operation and the flow adjusting operation of the bracket adjusting device can be performed outside the suspension line (on the side opposite to the direction in which the lateral tension acts). Therefore, it is possible to prevent the tension of the suspension line from being accidentally released from the movable bracket adjusting device during the work, and the train line from moving in a direction that is not assumed by the operator.

  According to the movable bracket adjusting device of the present invention, the position of the movable bracket can be adjusted easily and accurately. Further, according to the movable bracket adjusting device and the adjusting method of the present invention, when applied to the O-shaped movable bracket, the temporary support is disengaged and the train line moves in a direction unexpected by the operator. There is an effect that the flow adjustment work of the movable bracket can be accurately performed without falling into the situation.

It is the front view which shows an example of O-shaped movable bracket in which the movable bracket adjustment apparatus which concerns on this invention is used, and the enlarged view which shows the detail of the adhering part of a suspension wire receiving metal fitting. It is a perspective view which shows the detail of the suspension wire bracket fixed on the upper arm of a movable bracket. It is the perspective view and front view which show one Embodiment of the movable bracket adjustment apparatus which concerns on this invention. It is the top view and side view which show the movable bracket adjustment apparatus which concerns on embodiment. It is the top view and side view which show the use condition of the movable bracket adjustment apparatus which concerns on embodiment. (A) is a perspective view which shows the example of the components (spacer) for enabling the movable bracket adjustment apparatus which concerns on embodiment to be used for the movable bracket from which the thickness of a main pipe differs, (B) is a perspective view which shows the use condition. FIG. It is a flowchart which shows an example of the work procedure at the time of using the movable bracket adjustment apparatus which concerns on embodiment for the exact flow adjustment work.

Hereinafter, an embodiment of a movable bracket adjusting device according to an embodiment of the present invention will be described with reference to the drawings, but before that, an O as a train line support device in which the movable bracket adjusting device of the embodiment is used. An outline of the shape movable bracket will be described.
FIG. 1 shows an example of an O-shaped movable bracket as a train line support device in which the movable bracket adjusting device according to this embodiment is used. Among these, FIG. 1A is an overall view of the movable bracket, and FIG. 1B is an enlarged view of a suspension wire fixing portion at substantially the center of the movable bracket. In the following description, a view seen from the direction of arrow A in FIG. Accordingly, FIG. 1A corresponds to a side view of the movable bracket.

The movable bracket 10 of FIG. 1 is disposed obliquely so as to support the load of the main pipe 11 from below, and a main pipe 11 extending forward in the horizontal direction in order to suspend and support the train line on the utility pole P. The inclined pipe 12 and the anti-vibration pipe 13 installed between the distal end portion of the main pipe 11 and the distal end portion of the inclined pipe 12 are provided.
The main pipe 11 is fixed to the utility pole P on the base end side with the attachment band B1, extends in the horizontal direction via the insulator G1, and the tip end portion is formed to be inclined downward while being curved downward. The inclined pipe 12 is similarly fixed to the utility pole P on the base end side with a mounting band B2, extends obliquely upward via the insulator G2, and has a tip coupled to a position closer to the tip than the center of the main pipe 11, Collaborate to form a truss. The main pipe 11 and the inclined pipe 12 are coupled so that their base portions can be rotated to the left and right with respect to the utility pole P by hinges 11H and 12H, respectively.

  The bracing pipe 13 extends between the main pipe 11 and the inclined pipe 12 and extends substantially horizontally so as to be parallel to the lower side of the main pipe 11, and its base is coupled to the inclined pipe 12. Is coupled to the tip of the main pipe 11. Further, the anti-vibration pipe 13 is provided with a curve drawing device 16 in which an upper portion is rotatably connected to the anti-vibration pipe 13 by a support fitting 14 and an arc-shaped arm 15 is connected to the lower portion. Is supported by a bracing pipe 13. An ear 17 that holds the trolley wire T is fixed to the tip of the arm 15. Although not shown, the trolley wire T is suspended from a suspension line laid upward by a wire called a hanger provided at a predetermined interval in the extending direction.

On the other hand, in the vicinity of the joint portion of the main pipe 11 with the tip of the inclined pipe 12 at the center, as shown in FIG. 1 (B), the suspension wire M that supports and holds the trolley wire is held and fixed. An overhead wire fixing means 18 is provided.
As shown in an enlarged view in FIG. 2, the suspension wire fixing means 18 includes a receiving metal fitting 81 having a substantially C-shaped cross section with an open top, and a pair of connecting portions 81 a provided vertically on the lower surface of the receiving metal fitting 81. And a semi-cylindrical fixing bracket 82 for fixing the suspension wire fixing means 18 to the upper surface of the main pipe 11, and a slit 81 b and a side wall formed on the bottom wall of the receiving bracket 81. As shown in FIG. 1 (B), a J bolt 83 inserted through the hole 81c and a tightening nut 84 that is screwed into a male screw portion 83a formed at the side wall protruding side end of the J bolt 83 are provided.

A plurality of bolt insertion holes 82a are formed on the left and right side walls of the fixing bracket 82. After the fixing bracket 82 is engaged with the main pipe 11 from above, a bolt 85 is inserted into the bolt insertion hole 82a and a nut is inserted. The suspension wire fixing means 18 is fixed to the upper surface of the main pipe 11 by screwing and fastening 86.
As shown in FIG. 2, the J bolt 83 is provided with a flange 83 b, and when the fastening nut 84 is tightened, the upper surface of the flange 83 b comes into contact with the peripheral edge of the slit 81 b on the bottom wall of the receiving metal 81. On the other hand, the J bolt 83 is configured to move along the slit 81 b and to fix the suspension line M between the bent portion of the J bolt 83 and the bent portion of the receiving metal member 81. Further, when the tightening nut 84 is loosened, the J bolt 83 is separated from the side wall of the metal fitting 81, and the suspension line M is released to be movable.

3-5 shows one Embodiment of the movable bracket adjustment apparatus based on embodiment of this invention, FIG. 3 (A) is a perspective view, FIG.3 (B) is a front view. 4A is a plan view of the movable bracket adjusting device, FIG. 4B is a side view, FIG. 5A is a plan view showing a use state, and FIG. 5B is a side view showing a use state. It is.
As shown in FIG. 3A, the movable bracket adjusting device 20 according to the present embodiment grips a main body frame 21 that is a rectangular frame that is elongated in the left and right direction, and a main pipe 11 of the movable bracket that is provided on the lower surface of the main body frame 21. By doing so, a pair of sliding blocks 22 having clamping means for removably fixing to the main pipe, and a grip portion horizontally extending between the front and rear walls of the main body frame 21 and holding the suspension line M at the tip end. A flow adjusting screw 24 (between the grip rods 23A and 23B and the left and right side walls of the main body frame 21 which is horizontally mounted in a direction orthogonal to the grip rods 23A and 23B and moves the slide block 22 relative to the main body frame 21). 4).

  The sliding block 22 is formed with a female screw portion (not shown) to which the flow adjusting screw 24 is screwed, and has a function similar to that of the feed screw. Further, the front and rear surfaces of the slide block 22 are slidably positioned by contacting the front wall 21a and the rear wall 21b of the main body frame 21, and when the flow adjusting screw 24 is turned, the slide block 22 is moved. The main body frame 21 is moved left and right. Further, the flow adjusting screw 24 is provided with bolt heads formed by welding nuts 25A and 25B at both ends, and a sliding block is formed by turning a screw by engaging a tool with the bolt head. The flow adjustment work of the movable bracket that moves the movable body 22 can be performed from both sides of the main body frame 21. The flow adjusting screw 24 is loosely fitted in a hole having a diameter slightly larger than the diameter of each screw formed on the side wall of the main body frame 21, and the screw remains in the main body frame even if the flow adjusting screw 24 is turned. 21 does not move.

Further, as shown in FIG. 3B, an opening having a shape corresponding to the cross-sectional shape (circular shape) of the main pipe 11 is formed at the lower end of the sliding block 22 by facing each other and joining each other. The two semi-cylindrical members 22A and 22B, a hinge 22C that couples the two semi-cylindrical members 22A and 22B, and an end opposite to the hinge 22C of the semi-cylindrical members 22A and 22B. Clamping means provided with a working bolt 22D is provided.
One semi-cylindrical member 22A is fixed to the lower surface of the sliding block 22 by welding or the like, and the other semi-cylindrical member 22B is rotatably coupled to the semi-cylindrical member 22A by a hinge 22C. Yes. On the opposite side of the semi-cylindrical members 22A and 22B from the hinge 22C, engaging pieces 22Aa and 22Ba that can be opposed to each other in a parallel posture at a predetermined interval are formed, and the engaging pieces 22Aa and 22Ba are formed. Each has a bolt insertion hole (not shown).

Therefore, as indicated by a chain line F in FIG. 3B, the main pipe 11 of the movable bracket is connected between the semicylindrical members 22A and 22B in a state where the fixing bolt 22D is removed and the semicylindrical member 22B is suspended. The movable bracket adjusting device 20 can be fixed to the main pipe 11 of the movable bracket by inserting the fixing bolt 22D into the bolt insertion hole and tightening the nut 22E at the tip and tightening the bolt. . Accordingly, the semi-cylindrical members 22A and 22B, the hinge 22C that couples them rotatably, the semi-cylindrical members 22A and 22B, the hinge 22C, and the fixing bolt 22D make the movable bracket adjusting device 20 a main pipe. Clamping means for detachably fixing is configured.
In this embodiment, as shown in FIG. 4 (B), two bolts are inserted so that two fixing bolts 22D can be inserted into the engaging pieces 22Aa and 22Ba, respectively. A hole (not shown) is formed so that the movable bracket adjusting device 20 can be more firmly fixed to the main pipe 11 of the movable bracket.

The grip rods 23A and 23B are respectively formed with male screw portions 23Aa and 23Ba on the outer peripheral surface of the rear end portion, and the displacement adjusting nuts 31A and 31B are screwed into the male screw portions 23Aa and 23Ba, respectively. The grip rods 23A and 23B are inserted into holes having diameters slightly larger than the diameters of the rods formed on the front wall 21a and the rear wall 21b of the main body frame 21, respectively. When the displacement adjustment nuts 31A and 31B are turned in this state (a state in which tension is applied), the grip rods 23A and 23B move forward and backward (in the axial direction) without moving the nuts.
The upper surfaces of the grip rods 23A and 23B are formed flat, and the rod insertion holes formed in the front wall 21a and the rear wall 21b of the main body frame 21 are formed in a shape corresponding to the cross section of the rod. Further, it is possible to prevent the grip rods 23A and 23B from idling.

  In addition, the grip rods 23A and 23B have recesses corresponding to the diameter of the suspension wire M at the tip portions thereof, and are opposed to each other so as to be joined to each other so as to correspond to the cross-sectional shape (circular shape) of the suspension wire M. Gripping members 32A and 32B, a pin 32C that couples these members in a rotatable manner, and a base part of the gripping member 32A and an end opposite to the pin 32C of the gripping member 32B that can be joined / released for fastening Bolts 33 are provided. A screw hole into which the fastening bolt 33 can be screwed is formed at the base of the gripping member 32A.

  One gripping member 32A is integrally fixed to the tip of the grip rod 23A (23B) by welding or the like, and the other gripping member 32B is rotatably coupled to the tip of the gripping member 32A by a pin 32C. On the opposite side of the gripping members 32A and 32B from the pins 32C, a female screw portion and a bolt insertion hole (not shown) to which the tightening bolt 33 can be screwed are respectively formed, and a suspension line is provided between the gripping members 32A and 32B. After that, the fastening bolt 33 is screwed and tightened so that the suspension wire can be sandwiched between the ends of the grip rods 23A and 23B.

  5A and 5B show a usage state of the movable bracket adjustment device 20 of the present embodiment. As shown in FIG. 5 (B), the movable bracket adjusting device 20 is arranged so that the main body frame 21 comes upward by the clamping means (22A, 22B, 22D, 22E) provided on the sliding block 22. It is fixed to the main pipe 11 of the movable bracket. When the displacement adjusting nuts 31A and 31B are turned in a state where the suspension wire M is sandwiched between the gripping members 32A and 32B at the tips of the grip rods 23A and 23B, the grip rods 23A and 23B are moved back and forth (left and right in the figure). Can be moved to.

  Further, the tightening nut 84 constituting the suspension wire fixing means 18 is loosened so that the J bolt 83 can be moved with respect to the metal fitting 81 so that the suspension wire M is released from the suspension wire fixing means 18 in a state where the suspension wire M is released. When the nut 25A or 25B at the end of the adjustment screw 24 is turned, the grip rods 23A and 23B holding the suspension line M cannot be moved, so that the sliding block 22 is moved to the left and right with respect to the main body frame 21. . At this time, since the sliding block 22 is fixed to the main pipe 11 and the receiving bracket 81 is also fixed to the main pipe 11, the receiving bracket 81 is attached to the main body frame 21 as shown by a chain line in FIG. On the other hand, it is moved left and right (up and down in the figure).

The base of the curving device 16 (see FIG. 1) having the arm 15 that holds the trolley wire is rotatably connected to the anti-vibration pipe 13, so that the tip of the arm 15 is the main pipe 11. It can move relatively to the left and right, and does not hinder the flow adjustment of the movable bracket 10. Therefore, when the flow adjusting screw 24 is turned, the main pipe 11 of the movable bracket 10 to which the receiving bracket 81 is fixed can easily move to the left and right to adjust the flow of the movable bracket.
In addition, when the distance between the lines is different on the left and right with the movable bracket as the center as in the pull-up location, the structure is pulled together by a pair of left and right pulleys as in the prior art described in Patent Document 1 above. The line and pulley do not match and cannot be drawn evenly.

On the other hand, in the movable bracket adjustment device 20 of the present embodiment, when the lateral tension of the suspension line is temporarily received by the grip rods 23A and 23B during the flow adjustment operation, the suspension line is suspended by the left and right grip rods 23A and 23B. Can be pulled by different distances, so that the tightening of the screw can be adjusted and the suspension line can be pulled with equal force on the left and right according to the shape of the line, and an unreasonable force is applied to the movable bracket adjusting device 20 Can be avoided.
Furthermore, in the movable bracket adjusting device 20 of the present embodiment, scale portions 23As and 23Bs, for example, having a scale in units of 1 mm are provided on the upper surfaces of the grip rods 23A and 23B, so that screws by nuts 31A and 31B are provided. The amount of movement of the grip rods 23A and 23B accompanying the tightening of the suspension wire can be grasped, and the displacement adjustment of the suspension wire can be accurately performed.

Next, the flow adjustment work procedure of the movable bracket 10 using the movable bracket adjustment device 20 of the above embodiment will be described with reference to the flowchart of FIG. In the following work, for example, a maintenance vehicle equipped with a work table that can be moved up and down is moved to the work site, that is, a position where a movable bracket for flow adjustment is provided, and the work is performed after the worker gets on the work table. It is desirable to raise the platform to a predetermined height from the viewpoint of work efficiency and safety.
Note that the movable bracket adjusting device 20 is used at a location where the tension of the suspension wire is directed toward the utility pole to which the movable bracket is attached. For movable brackets in which the tension of the suspension line works away from the utility pole, the wire is stretched between the suspension line and the utility pole and tightened with a shimella to temporarily receive the tension of the suspension line, and then push it manually. The flow of the movable bracket can be adjusted by moving the movable bracket to the side.

According to the flowchart of FIG. 7, the worker who has arrived at the movable bracket for which the flow adjustment is desired and that faces the direction of the utility pole to which the tension of the suspension wire is attached moves to a predetermined height on the workbench. First, using the clamping means (22A to 22E) of the movable bracket adjusting device 20, the movable bracket adjusting device 20 is attached to the tip side of the movable bracket 10, that is, the side opposite to the direction of the lateral tension acting on the suspension wire (step S1). .
Next, the operator engages the suspension wire with the gripping members 32A and 32B at the tips of the grip rods 23A and 23B, and then clamps the suspension wire by tightening the tightening bolts 33 (step S2).

  Subsequently, the operator turns the tightening nut 84 of the suspension wire fixing means 18 to loosen the J bolt 83 and releases the suspension wire from the receiving bracket 81 (step S3). Then, the tension of the suspension wire is temporarily received by the movable bracket adjusting device 20 by tightening the displacement adjusting nuts 31A and 31B at the rear ends of the grip rods 23A and 23B and shifting the grip rods 23A and 23B backward. (Step S4). At this time, the displacement amounts of the grip rods 23A and 23B are adjusted while visually confirming the scales of the scale portions 23As and 23Bs provided on the upper surfaces of the grip rods 23A and 23B.

Next, the operator turns the flow adjusting screw 24 to move the main pipe 11 of the movable bracket 10 to which the sliding block 22 and the receiving metal fixture 81 are fixed to the left or right, and the flow of the movable bracket. Is adjusted (step S5). Thereafter, the tension adjusting nuts 31A and 31B are loosened and the grip rods 23A and 23B are moved forward, whereby the tension of the suspension wire is returned from the movable bracket adjusting device 20 to the metal fitting 81 (step S6).
Subsequently, the operator turns the tightening nut 84 of the suspension wire fixing means 18 to tighten the J bolt 83 and clamps the suspension wire with the support fitting 81 (step S7). Thereafter, the clamping means (22A to 22E) of the movable bracket adjusting device 20 are loosened, the movable bracket adjusting device 20 is removed from the movable bracket 10, and the operation is finished (step S8).

If the movable bracket adjusting device 20 of the present embodiment is used, the operator can perform the above-described work outside the suspension line, so that the tension of the suspension line is accidentally released during the work, and the train line works. There is an advantage that it is possible to prevent the user from moving in an unexpected direction.
Further, conventionally, the adjustment of the flow of the movable bracket, which is performed after temporarily receiving the tension of the suspension wire with a wire or the like, has been executed by moving the movable bracket in the lateral direction by hand, so that the adjustment results tend to vary. There were drawbacks. On the other hand, if the movable bracket adjusting device 20 of the present embodiment is used, the flow of the movable bracket can be adjusted by turning the flow adjusting screw 24. Therefore, the adjustment results are less likely to vary, and the flow is highly accurate. There is an advantage that adjustment is possible.

In addition, there are some movable brackets that support suspension and trolley lines currently laid along railway lines in various places, such as those for Shinkansen and conventional lines, but with different main pipe thickness. In the movable bracket adjusting device 20 of the above-described embodiment, since the semicylindrical members 22A and 22B constituting the clamping means are fixed to the sliding block 22, they can correspond to other types of movable brackets as they are. difficult.
Therefore, as shown in FIG. 6A, a plurality of half-dividable cylindrical spacers 40A, 40B... Having different thicknesses are prepared, and the movable bracket adjustment device using the movable bracket adjustment device is prepared. Depending on the thickness of the main pipe, different spacers are used, and as shown in FIG. 6B, the spacers 40A or 40B... Also good.

Although the invention made by the present inventor has been specifically described based on the embodiment, the present invention is not limited to the embodiment. For example, in the above-described embodiment, the movement amount of the sliding block 22, that is, the flow adjustment amount of the movable bracket 10 is grasped visually from the distance between the side surface of the sliding block 22 and the side wall of the main body frame 21 of the movable bracket adjustment device 20. However, the upper surface of the front wall 21a or the rear wall 21b of the frame 21 can be graduated, and a base line can be attached to the center of the sliding block 22, and the amount of movement of the sliding block 22 can be read by comparing the scale and the base line. In this way, it is possible to improve the accuracy of the flow adjustment amount of the movable bracket 10.
Moreover, in the said embodiment, although the feed screw 24 is used as a feed means of a sliding block, the feed means using a ratchet mechanism etc. may be used.

DESCRIPTION OF SYMBOLS 10 Movable bracket 11 Main pipe 12 Inclined pipe 13 Anti-rest pipe 14 Support metal fitting 15 Arm 16 Curvature drawing device 18 Suspension wire fixing means 20 Movable bracket adjustment device 21 Main body frame (main body frame member)
22 Sliding block 23A, 23B Grip rod (bar-shaped member)
24 Flow adjustment screw (sliding block feed means, feed screw)
25 Tightening bolts 31A, 31B Deviation adjustment nut (deviation adjustment means)

Claims (4)

During the operation of adjusting the position of the movable bracket supported by the support structure and extending in a direction orthogonal to the extending direction of the suspension line, the suspension line replaces the suspension line support means of the movable bracket. Is a movable bracket adjustment device capable of temporarily holding it against its tension,
A main body frame member having clamp means for detachably fixing to the bracket constituent member constituting the movable bracket and provided with the suspension wire support means;
A pair of rod-shaped members having suspension wire clamping means capable of clamping the suspension wire, and supported so as to be movable while being kept parallel to each other by the main body frame member;
A pair of displacement adjusting means for individually moving the pair of rod-shaped members in the axial direction;
A sliding block that is held by the main body frame member and is movable in a direction orthogonal to the moving direction of the pair of rod-shaped members;
Sliding block feed means supported by the body frame member and capable of moving the sliding block;
A movable bracket adjustment device comprising: The main body frame member is formed in a rectangular frame shape that is long in a direction orthogonal to the moving direction of the pair of rod-shaped members,
The sliding block is slidably held between a front wall and a rear wall of the main body frame member,
The sliding block feed means is a feed screw rotatably supported between the opposing side walls of the main body frame member,
The movable bracket adjusting device according to claim 1, wherein a bolt head is provided at each portion of the feed screw that protrudes from a side wall of the main body frame member.   Male screws are formed on part of the outer circumferences of the pair of rod-shaped members, and nuts are screwed into the male screws, respectively, and when the nuts are turned, the pair of rod-shaped members are moved in the axial direction. The movable bracket adjusting device according to claim 1, wherein the movable bracket adjusting device is configured as follows. The movable bracket which adjusts the position of the movable bracket direction of the movable bracket which the lateral tension of the said suspended wire is acting toward the said support structure using the movable bracket adjustment apparatus in any one of Claims 1-3 A flow adjustment method,
Fixing the movable bracket adjusting device by the clamp means at a position on the tip side of the bracket component member provided with the suspension line support means;
A step of holding the suspension wires by the suspension wire holding means provided on the pair of rod-shaped members, and
Operating the suspension wire support means provided on the movable bracket to release the support state of the suspension wire; and
Moving the pair of rod-shaped members in a direction opposite to the direction in which the lateral tension of the suspension line acts to release the lateral tension of the suspension line from the suspension line support means;
Operating the sliding block feeding means to move the sliding block in a desired direction by a desired amount;
Moving the pair of rod-shaped members in the direction of the base side of the bracket constituent member to release the suspended state of the suspension wire by the suspension wire clamping means;
A step of operating the suspension line support means to convert the suspension line to a state of supporting the suspension line;
Releasing the clamp state of the clamp means and removing the movable bracket adjustment device from the movable bracket;
A method for adjusting the flow of a movable bracket, comprising:

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