JP5348794B2 - Durability testing equipment for overhead wire connection fittings for train lines - Google Patents

Description

  The present invention relates to, for example, an overhead wire connection fitting for a train wire that electrically conducts between suspension wires of different systems in a catenary overhead wire, between trolley wires, or between a trolley wire and a suspension wire. The present invention relates to an endurance test apparatus for collecting data on the endurance performance of a metal fitting against movement in the wire drawing direction due to expansion and contraction of the metal.

In general, in the catenary overhead line, as shown in FIG. 15, the suspension lines M1 and M2 of adjacent different systems are electrically connected to each other by the overhead line connection fitting C. As shown in FIGS. 16 and 17, since the suspension lines M1 and M2 of each system form a parallel pair, in order to connect the systems, two overhead lines M1 and M2 are connected to each other. A connection fitting C is used. The overhead wire fitting C is provided with clamps C2 connected to the suspension wire M at both ends of the lead wire C1. The clamp C2 includes a small sleeve C3 that divides the end portion of the lead wire C1 into a bifurcated shape and compressively connects them, a clamp piece C4 that is integrally formed at one end portion of the small sleeve C3, and a suspension wire M that is compressed. The fixed branch sleeve M1 is sandwiched and opposed from both sides, and includes a bolt and a nut C5 that fasten both ends in the longitudinal direction of the clamp piece C4. An intermediate portion of the overhead wire connecting bracket C is held via an insulator G on an arm A that is horizontally fixed in the extending direction from a steel tube beam B projecting in a crossing direction on the track from the side.
Since both ends of the overhead wire connecting fitting C are fixed between the suspension wires M and M, when the suspension wire M expands and contracts due to a temperature change or the like, the clamp C2 moves in the extending direction together with the branch sleeve S, and the lead wire C1. As a result, the mechanical strength is weakened as a result of slow expansion and contraction between the two end portions in the extending direction centering on the holding position. In order to collect data in advance regarding the durability of such a connection fitting C, conventionally, an actual-size overhead wire is stretched between two diameters so that the ends thereof overlap in the longitudinal direction, and the connection fitting is connected between the two-diameter overhead wires. Connect. A cylinder is connected to the end of each overhead wire, and a piston rod that can be slidably moved in the cylinder is operated with a lever. Overload.
Technical literature relating to this type of test could not be found.

In the conventional test method described above, the installation space for the test equipment is widened, and at least two workers are required to operate the overhead line. It is constrained for a long time and the efficiency is poor. In addition, there is a difficulty in accuracy in the test method such that the moving distance of the cylinder (that is, the overhead wire) is based on the visual observation of the operator, or the number of movements is counted by the operator himself. In addition to changing the size and number of overhead wires and the relative positional relationship between the overhead wires, there is a problem in that it is necessary to make a significant change in the equipment in order to change the holding position of the overhead wire connection fittings.
Therefore, the present invention is a compact overhead wire connecting bracket that can automatically perform tests with high accuracy and can easily change various equipment conditions without taking up facility space and being compact, without always having workers resident. Provide durability testing equipment.

In order to solve the above-mentioned problem, in the present invention, an overhead wire connecting bracket C for connecting adjacent overhead wires to each other is mounted to reproduce the behavior such as movement in the wire drawing direction due to expansion and contraction of the suspension wire. A durability test apparatus 1 for collecting data on the durability performance of C was configured. This durability test apparatus 1 was fixed to a column 3 from a gantry 2 in the vertical direction and formed at the upper end. This durability test apparatus 1 fixes a column 3 in a vertical direction from a gantry 2, supports an arm 11 extending in a lateral direction to hold an intermediate portion of the overhead wire connection fitting C at an upper end portion, and also supports each other on the gantry 2. A pair of movable bodies 4 and 5 are provided at intervals, and a predetermined range assuming the amount of movement of the overhead wire is configured to be linearly reciprocable in parallel. The connection members 19 and 24 for holding one of the connectors C2 are provided, and the pair of movable bodies 4 and 5 are reciprocally moved in opposite directions at the same speed by the synchronous drive mechanism 6.
The synchronous drive mechanism 6 is wound around a pair of opposed pulleys 34, 34 provided on the gantry 2 so as to be rotatable in the horizontal direction, and the pair of pulleys 34, 34 respectively. The movable bodies 4 and 5 were fixed, respectively, and a chain 35 to be routed and a drive mechanism 25 to route the chain 35 were provided.
The drive mechanism 25 has a rotatable ball screw 28 whose axis is supported along the straight portion of the chain 35, and is fixed to one of the movable bodies 4 and screwed into the ball screw 28. A nut body 29 for moving the movable body 4 and routing the chain 35 and a motor 27 having a shaft connected to the ball screw 28 and capable of reversing forward and reverse at every predetermined rotation are provided.
The nut body 29 is coupled to the chain 35 so as to be separable and can move only one movable body 4 without drawing the chain 35 in the separated state.
On the gantry 2, guide rails 36, 36 are fixed to engage the movable bodies 4, 5 to guide their moving directions.
The connection members 19 and 24 are attached to the movable bodies 4 and 5 so that the fixed position can be changed in the moving direction.

  In the present invention, by repeating the reciprocating movement of the movable body to which the overhead wire connecting bracket is connected, the behavior close to the actual behavior of the overhead wire connecting bracket can be experimentally reproduced. It is only necessary to secure the length, and it is compact and saves space. Since the test operation is automatically performed during the test, the test can be performed efficiently without involving workers. The operation of the overhead wire fitting is mechanically repeated according to the set contents, so the test accuracy is high. Test conditions such as the size and number of overhead lines are highly flexible and can be easily changed.

1 is a front view of a test apparatus according to the present invention. It is a side view of the test apparatus of FIG. It is a top view of the test apparatus of FIG. It is a front view of the mounting bracket of a support | pillar. It is a top view of the support | pillar mounting bracket of FIG. It is a front view of the support | pillar front-end | tip part. It is a top view of the support | pillar front-end | tip part of FIG. It is a front view of a 1st movable body. It is a side view of the 1st movable body of FIG. It is a top view of the 1st movable body of FIG. It is a front view of an attachment base. It is a top view of the attachment base of FIG. It is a front view of a 2nd movable body. It is a top view of the 2nd movable body of FIG. It is a conceptual explanatory drawing of an overhead wire connection metal fitting. It is a front view of an overhead wire connection metal fitting. It is a side view of the overhead wire connection metal fitting of FIG.

An embodiment of the present invention will be described with reference to the drawings.
1 to 3, the test apparatus 1 includes a table-like gantry 2 having a rectangular top plate, struts 3 erected on the longitudinal edge of the gantry 2, and the amount of extension / contraction of the trolley wire. Assuming that the first movable body 4 is provided on the gantry 2 so as to be linearly reciprocable in the longitudinal direction, and is also provided on the gantry 2 so as to be linearly reciprocable in the longitudinal direction in parallel with the first movable body 4. 2 includes a movable body 5 and a synchronous drive mechanism 6 that drives the first and second movable bodies 4 and 5.

  As shown in FIG. 4 and FIG. 5, the support column 3 is fixed at its lower end to the edge at the substantially center in the longitudinal direction of the gantry 2 with a mounting bracket 7. The mounting bracket 7 includes an L-shaped backing plate 8 fixed to the edge of the gantry 2 and a pair of upper and lower brackets 9 that protrude from one plate surface of the backing plate 8 in the orthogonal direction and fix the support column 3. To do. In the abutting plate 8, a horizontal plate 8a and a vertical plate 8b applied along the edge of the gantry 2 are fixed to the gantry 2 with bolts 8c, respectively. The insertion holes of the bolts 8c can be selectively matched with the plurality of adjustment holes 2a provided in the longitudinal direction at the edge of the gantry 2 so that the fixing position of the column 3 by the mounting bracket 7 can be changed in the lateral direction. The bracket 9 includes a pair of bracket pieces 9a and 9a which have a dent corresponding to the side surface of the column 3 in the opposing portion, and which are contiguous at the proximal end and opposed to each other with a slight gap at the distal end, and the bracket pieces 9a, A horizontal tightening bolt 9b that joins the tip end of 9a, and a stop pin 9c that penetrates the support post 3 in the horizontal direction at the intermediate portion of the bracket pieces 9a, 9a are provided. The insertion hole of the retaining pin 9c selectively matches a plurality of adjustment holes 3a provided in the longitudinal direction at the lower end of the support column 3, and the support position of the support column 3 by the mounting bracket 7 can be changed up and down.

  As shown in FIGS. 6 and 7, a bracket 10 that supports the arm 11 in the horizontal direction is fixed to the upper end of the column 3. The bracket 10 includes a disc-shaped base 12 that matches the outer shape of the upper end flange 3b, a pair of bracket pieces 13 and 13 that rise from the center of the base 12 and face each other with a slight gap therebetween, 13 and 13 are provided with fastening bolts 14 that are screwed onto the tip portions. The peripheral portion of the base 12 is provided with four long holes 12a at equal intervals through which the fixing bolts 12b fixed to the flange 3b of the support column 3 are penetrated, and the extending direction of the arm 11 by the bracket 10 is set within the angle range of the long holes 12a. Can be adjusted. The bracket piece 13 is disposed with the dents corresponding to the side surfaces of the arm 11 facing each other, and is continuous with each other at the base, and the bolts 14 are fastened and fixed with the arm 11 sandwiched from both sides. The arm 11 is supported by the bracket 10 and protrudes in the horizontal direction above the gantry 2, and holds the intermediate portion of the overhead wire connecting fitting C at the distal end portion via an insulator series 11 a.

  As shown in FIGS. 8 to 10, the first movable body 4 includes a mounting base 15 fixed on a nut body 29 screwed to a ball screw 28 described later, and a metal fitting fixed on the upper portion of the mounting base 15. And a body 16. As shown in FIGS. 11 and 12, the mounting base 15 has rectangular mounting plates 15a and 15b coupled to the upper and lower ends of the coupling tube 15c. The lower mounting plate 15b has a plurality of long holes 15e whose positions can be adjusted when the nut body 29 is fixed with the bolts 17b. The metal fitting assembly 16 includes a mounting plate 17, two brackets 18 fixed to the mounting plate 17, and a sleeve member 19 that is compressed and fixed to an overhead line corresponding to a feeder suspension line supported by the bracket 18. ing. The mounting plate 17 is provided with a plurality of bolt insertion holes 17a, which can change the fixing position of the bracket 18 by the bolts 17b, in two rows at equal intervals in the longitudinal direction. The upper mounting plate 15a is provided with a plurality of bolt insertion holes 15d for receiving the bolts 17b at positions corresponding to the bolt insertion holes 17a. The bracket 18 is joined to the seat plate 18a, a pair of bracket pieces 18b and 18b facing the left and right with a slight gap at the upper part of the base plate 18a and rising from the seat plate 18a, and the end portions of the bracket pieces 18b and 18b. And a fastening bolt 18c. The bracket piece 18b is arranged with the dent corresponding to the side surface of the sleeve member 19 facing each other, and the sleeve member 19 is sandwiched from both sides and fastened with bolts 18c.

  As shown in FIGS. 13 and 14, the second movable body 5 includes a guide base 20 having a guide groove 20 a fitted from above to a guide rail 36 having a rectangular section fixed on the gantry 2 in the longitudinal direction; A metal connector 21 fixed to the upper part of the guide base 20 is provided. The fitting connector 21 includes an attachment plate 22 fixed on the guide base 20, a bracket 23 attached on the attachment plate 22, and a sleeve member 24 supported by the bracket 23. The mounting plate 22 is provided with two rows of bolt insertion holes 22a that can change the fixing position of the bracket 23 by the bolts 22b at equal intervals in the longitudinal direction. The bracket 23 joins the seat plate 23a, a pair of bracket pieces 23b and 23b facing the left and right with a slight gap at the upper portion thereof, and a base portion integrally rising from the seat plate 23a, and the tip portions of the bracket pieces 23b and 23b. And a fastening bolt 23c. The bracket piece 23b is arranged with the dent corresponding to the side portion of the sleeve member 24 facing each other, and the sleeve member 24 is sandwiched from both sides and fastened with bolts 23c.

  As shown in FIGS. 1 to 3, the synchronous drive mechanism 6 includes a drive mechanism 25 and a driven mechanism 26. The drive mechanism 25 is associated with a motor 27 with coupling fixed to one end of the gantry 2, a ball screw 28 coupled to the shaft of the motor 27 and extending in the longitudinal direction of the gantry 2 to the other end, and the ball screw 28. And a pair of parallel guide bars 30 and 30 penetrating through the nut body 29 in the longitudinal direction supported at both ends by the bracket 31 on the gantry 2. It has. The rotation speed and reversal timing of the motor 27 are controlled by a control panel 32 provided on the side of the gantry 2. Both ends of the ball screw 28 are supported by the bracket 17 together with the guide bars 30 and 30. The ball screw 28 is rotated by driving the motor 27 to move the first movable body 4 along with the nut body 29 along the guide bar 30 in one axial direction, and to the other by reversal.

  The driven mechanism 26 includes a chain guide 33 that engages with a side portion of the nut body 29, a pair of opposed pulleys 34 and 34 that are rotatably supported at both ends in the longitudinal direction of the gantry 2, and a pulley 34. , 34 and a pair of parallel guide rails 36, 36 having a rectangular cross section fixed on the gantry 2 in the longitudinal direction. As shown in FIGS. 2 and 3, a connecting pin 33 a that can be inserted and removed is provided on the upper portion of the chain guide 33. The connecting pin 33a is inserted between the chain guides 33 and protrudes between opposing pieces of the bifurcated connector 29a protruding laterally from the nut body 29, and the chain guide 33 is fixed to the nut body 29 in the moving direction of the nut body 29. Then, the chain guide 33 is separated from the nut body 29 in a state of being extracted from the chain guide 33. The lower guide groove 33b of the chain guide 33 is fitted to one guide rail 36 from above, and the guide groove 20a of the guide base 20 of the second movable body 5 is fitted to the other guide rail 36 from above. The movement of the chain guide 33 and the second movable body 5 is guided. The chain guide 33 is coupled to one of the opposing linear portions of the chain 35 that are wound around the pulleys 34, 34, and the fitting connector 21 of the second movable body 5 is coupled to the other.

  In this test apparatus 1, the intermediate portion of the overhead wire connection fitting C is held at the distal end portion of the arm 11 supported by the support column 3 via the insulator series 11 a, and one clamp of the overhead wire connection fitting C is held. C2 is connected to the sleeve member 19 of the first movable body 4, and the other clamp C2 is connected to the sleeve member 24 of the second movable body 5. Next, the test operation is started by operating the control panel 32. When the ball screw 28 is rotated by driving the motor 27 of the drive mechanism 25, the nut body 29 moves in the axial direction along the guide bar 30 together with the first movable body 4 and the chain guide 33, and the chain 35 of the driven mechanism 26 is moved. As a result, the second movable body 5 moves in the opposite direction synchronously with the first movable body 4. When the first movable body 4 and the second movable body 5 move a predetermined distance, the motor 27 is controlled by the control panel 32 so as to reversely move, and the first movable body 4 and the second movable body 5 are moved in the reverse direction. . These operations are repeated a predetermined number of times to reproduce the deformation operation of the overhead wire connecting bracket C with the support position of the support column 3 as the center. And various data are measured about the overhead wire connection metal fitting C after a test, and durability performance is confirmed. By controlling the rotation speed and reversal timing of the motor 27 with the control panel 32, the operation for the overhead wire fitting C can be set in the same manner as in practice.

  If the driving mechanism 25 is driven in a state where the connecting pin 33a of the chain guide 33 is pulled out and the chain guide 33 is separated from the nut body 29, the driven mechanism 26 remains stationary, and only the first movable body 4 reciprocates. Thus, it is possible to reproduce the deformation operation in which only one connector C2 of the overhead wire connection fitting C moves.

The first movable body 4 adjusts the mounting position with respect to the nut body 29 in the range of the long hole 15e of the lower mounting plate 15b, and adjusts the fixing position of the bracket 18 by appropriately selecting the bolt insertion hole 17a of the mounting plate 17. And the connection position of one clamp C2 of the overhead wire connection metal fitting C can be changed.
The second movable body 5 can change the connection position of the other clamp C <b> 2 of the overhead wire connection fitting C by adjusting the attachment position of the bracket 23 by appropriately selecting the bolt insertion hole 22 a of the attachment plate 22.
Further, according to the change of the connection position of the clamp C2 of the overhead wire connection fitting C, the fixing position of the column 3 is adjusted by appropriately selecting the adjustment hole 2a of the mount 2 through which the bolt 8c of the mounting fitting 7 is inserted, and the bracket 10 By adjusting the extending direction of the arm 11 in the range of the long hole 12a, the horizontal holding position of the intermediate part of the overhead wire connecting fitting C can be changed. Furthermore, the height position of the support column 3 can be adjusted by appropriately selecting the adjustment hole 3 a of the support column 3, and the vertical holding position of the intermediate portion of the overhead wire connection fitting C can be changed.

DESCRIPTION OF SYMBOLS 1 Test apparatus 2 Base 2a Adjustment hole 3 Support | pillar 3a Adjustment hole 4 1st movable body 5 2nd movable body 6 Synchronous drive mechanism 7 Mounting bracket 8c Bolt 9c Stopping pin 10 Bracket 11 Arm 12a Long hole 12b Fixing bolt 15 Mounting base 16 Metal fitting Connector 17 Mounting plate 17a Bolt insertion hole 17b Bolt 18 Bracket 19 Sleeve member 20 Guide base 21 Metal connector 22 Mounting plate 22a Bolt insertion hole 22b Bolt 23 Bracket 24 Sleeve member 25 Drive mechanism 26 Drive mechanism 27 Motor 28 Ball screw 29 Nut Body 29a Bifurcated connector 30 Guide bar 32 Control panel 33 Chain guide 33a Connecting pin 34 Pulley 35 Chain 36 Guide rail C Overhead connection fitting

Claims (6)

For collecting data on the durability performance of overhead wire fittings by attaching overhead wire fittings that electrically connect the overhead wires on the train line, reproducing behavior such as movement in the direction of extension due to expansion and contraction of overhead wires In durability testing equipment,
A column that is fixed in a vertical direction from a gantry and supports an arm that extends in a lateral direction to hold an intermediate portion of the overhead wire connecting bracket at an upper end portion;
Connected to each other on the gantry so as to be able to reciprocate linearly in parallel within a predetermined range assuming the amount of movement of the overhead wire, and connecting members for holding one of the connectors at both ends of the overhead wire connection bracket are fixed. A pair of movable bodies,
An endurance testing apparatus for an overhead wire connecting bracket for a train line, comprising: a synchronous drive mechanism that reciprocally moves the pair of movable bodies in opposite directions at the same speed. The synchronous drive mechanism includes a pair of opposed pulleys provided rotatably on the gantry in a horizontal direction;
Each of the pair of pulleys is looped around, the movable body is fixed to each of the opposing linear portions between the pulleys, and the chain is routed around,
The endurance test device for an overhead wire connecting bracket for a train line according to claim 1, further comprising a drive mechanism for drawing the chain. The drive mechanism includes a rotatable ball screw whose axis is supported along the straight portion of the chain;
A nut body fixed to one of the movable bodies and screwed into the ball screw, moving the movable body by rotation of the ball screw and routing the chain;
The endurance testing apparatus for an overhead wire connection fitting for a train line according to claim 2, further comprising: a motor having a shaft coupled to the ball screw and capable of reversing forward and backward at every predetermined rotation.   4. The train wire overhead line according to claim 3, wherein the nut body is detachably engaged with the chain and moves only one of the movable bodies without drawing the chain in the separated state. Endurance test equipment for connection fittings.   The durability test of the overhead wire connecting bracket for a train line according to any one of claims 1 to 4, further comprising a guide rail that is fixed on the frame and engages with the movable body to guide a moving direction. apparatus.   The durability test apparatus for an overhead wire connection fitting for a train line according to any one of claims 1 to 5, wherein the connection member is attached to the movable body so that a fixed position can be changed in a moving direction.

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