JP2014201219A - Trolley wire structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trolley wire structure in a factory, which is a new connection structure of a catenary suspended trolley wire and a hard aerial line trolley wire.SOLUTION: A hard aerial line trolley wire 10 is divided into two wires in the length direction thereof, and both divided trolley wires 10a and 10b are electrically and mechanically connected through an expansion joint 20. One divided trolley wire 10a is supportedly fixed to a stationary body 16 and the other divided trolley wire 10b is supported movably to the stationary body 16 in the length direction thereof and electrically and mechanically connected to a catenary suspended trolley wire 1. The other trolley wire 10b is imparted with tension by a tension mechanism 30 relative to the one divided trolley wire 10a. By the tension mechanism, the other trolley wire 10b is imparted with tension force relative to the one trolley wire 10a. The trolley wire 10b is connected to the catenary suspended trolley wire 1 so that the catenary suspended trolley wire 1 is also imparted with tension.

Description

  The present invention relates to a trolley wire structure for an electric carriage in a factory or the like.

For example, in the factory, as shown in FIG. 7, an electric cart (an electric mobile crane, an trolley wire 1 is installed over the entire length of the upper surface of the factory equipment A such as a manufacturing machine equipment and runs on the factory equipment A. There is a trolley wire structure that feeds power from the trolley wire 1 to D) (including an electric moving winch, etc.), and this trolley wire may reach several hundred meters or more.
The trolley wire 1 has a catenary suspension type and a rigid body type, and the former catenary suspension type trolley wire 1 is hung by hanging the trolley wire 1 with a metal fitting 2 called a hanger as shown in FIG. The structure is supported by an overhead wire 3 (see Patent Document 1, paragraph 0002, FIG. 1 and the like). The latter rigid overhead wire trolley wire is a structure in which a conductor trolley wire is directly supported and fixed by a rigid body such as a metal rod. (Refer to patent document 2, this application FIG. 6 etc.). The suspension line 3 is supported and fixed to the column 4 and the ceiling.

  The electric trolley D travels by feeding a power collecting shoe (pantograph or the like) a to the trolley wire 1 to supply power. At this time, since the catenary suspension type trolley wire 1 is in a suspended state, it swings up and down and left and right as the current collecting shoe a slides, and the power supply of this type of factory is a three-phase alternating current. The sliding width of the current collecting shoe a is narrow (about 100 mm) (see FIG. 4), and the current collecting shoe a may be separated from the trolley wire 1 to stop feeding (disconnection or disconnection). . On the other hand, since the rigid body type trolley wire is fixed, it does not sway up and down and left and right as the current collecting shoe slides, and there is little risk of disconnection, but the construction cost is lower than the catenary suspension type. There is a disadvantage that it is expensive.

JP 2000-313254 A JP 2011-98647 A

In the factory equipment A where the catenary suspended trolley wire 1 is installed, when further expanding a part of the factory equipment A or updating a part of the factory equipment A, the trolley wire 1 is extended, The trolley line 1 of the part to update is temporarily missing. In this case, the factory facility to be newly installed or the part to be updated may be a rigid overhead trolley wire instead of the catenary suspension trolley wire 1. At this time, the mechanical / electrical connection between the catenary suspended trolley wire 1 and the rigid overhead trolley wire and the structure for applying tension to the catenary suspended trolley wire are problematic.
Usually, tension is applied to the catenary suspension type trolley wire 1 by pulling the end of the trolley wire by a retaining device B made of a spring or the like (see FIG. 7) or suspending a weight at the end. For electrical connection, power supply terminals are attached to the two trolley wires that are distant from each other and are connected by jumper wires made of captyre cables or the like, or both trolley wires are mechanically electrically connected.

  This invention makes it a subject to provide the novel connection structure of a catenary suspension type trolley wire and a rigid body type trolley wire in trolley wire structures, such as said factory.

To achieve the above object, the present invention first mechanically connects a catenary suspended trolley wire and a rigid overhead trolley wire, and tension is applied to the catenary suspended trolley wire from the rigid overhead trolley wire side. It was made to reach.
Next, according to the present invention, the mechanism for applying the tension is divided into two in the length direction of the rigid body type trolley wire, and both the divided trolley wires are connected via an expansion joint and one of the divided trolley wires is fixed. The other divided trolley wire is supported and fixed to the body, and the other divided trolley wire is supported by the fixed body so as to be movable in the length direction, and connected to the catenary suspended trolley wire. As a structure that pulls the other split trolley wire with the mechanism and extends the tensile force to the catenary suspension trolley wire via the other division trolley wire, the catenary suspension trolley wire from the rigid overhead trolley wire side The tension was applied to.
If comprised in this way, while a tension | tensile_strength will be given to a catenary suspension type trolley wire and stable electric power feeding will be ensured, in the rigid body type trolley wire, the expansion-contraction of a length direction is absorbed via an expansion joint. Therefore, power can be supplied while maintaining the advantages of the rigid overhead trolley wire.

  A specific configuration of the present invention is a power supply trolley wire for an electric cart in a factory, including a catenary suspended trolley wire and a rigid overhead wire trolley wire, the rigid overhead wire trolley wire in the length direction The two divided trolley wires are connected to each other via an expansion joint, and one of the divided trolley wires is supported and fixed to a fixed body, and the other divided trolley wire is supported to be movable in the length direction of the fixed body. It is connected to the catenary suspension type trolley wire, and the other divided trolley wire can adopt a configuration in which a tension is applied to the other divided trolley wire by a tension mechanism.

  The pulling mechanism may be in various forms. For example, each of the split trolley wires is provided with a protruding piece at each of the opposite ends of the frame, and a movable rod is inserted between the two protruding pieces. A configuration in which a coil spring in a compressed state is inserted into a moving rod protruding from the side protruding piece and both ends of the moving rod are prevented from coming off from the protruding piece and the coil spring can be employed.

The trolley wire structure of this configuration is a case where a trolley wire is newly laid when a factory facility is newly installed, or a part of the existing or newly installed catenary suspension type trolley wire is missing. It can be adopted when a rigid body type trolley wire is used.
For example, when a part of an existing or newly installed catenary suspension trolley wire is lacking and a part of the lack is a rigid overhead trolley wire, the rigid overhead trolley wire is divided into two in the length direction. The two divided trolley wires are connected via an expansion joint, one of the divided trolley wires is supported and fixed to the fixed body, and the other divided trolley wire is supported by the fixed body so as to be movable in its length direction. A configuration in which the tension of the other divided trolley wire is applied by a tension mechanism to the divided trolley wire is a rigid overhead wire trolley wire unit, and this pair of units is connected to both of the absence of the catenary suspension trolley wire. It is placed symmetrically between the catenary suspended trolley wires, and the other divided trolley wire of one unit is connected to one catenary suspended trolley wire and the other catenary suspended It may be a configuration such as that connecting the other split contact wire of the other units to re line. In the case of the configuration, the pair of units can be a catenary suspension type trolley wire or a rigid body type trolley wire.

  Since the present invention is configured as described above, the catenary suspended trolley wire and the rigid overhead trolley wire can be connected, and there is no need to provide a separate trolley wire tension device for the catenary suspended trolley wire. There are advantages.

Partially omitted front view of one embodiment of the present invention 1 is an enlarged view of the main part of FIG. 2 is an enlarged view of the main part of FIG. 2 is an enlarged side view of the main part of FIG. Side view of a partially omitted main part of another embodiment Enlarged view of the main part of FIG. Schematic diagram of trolley wire structure in factory Relationship between trolley wire ambient temperature, coil spring length and tension in factory

  An embodiment of the present invention is shown in FIGS. 1 to 4, which is an intermediate part of the catenary suspended trolley wire 1, for example, a trolley having a length of 300 m, in the factory equipment A shown in FIG. 7. When about 100 m in the middle part of the line 1 is missing and the factory equipment A in the lacking part C is renewed, as shown in FIG. 1, the end part of the catenary suspended trolley wire 1 in the lacking part C Are provided with rigid overhead wire trolley wire units U and U ′, and the units U and U ′ apply tension to the catenary suspension trolley wire 1 and feed power to the ends thereof. It is.

Since the rigid overhead trolley wire units U and U ′ have a bilaterally symmetrical structure as shown in FIG. 1, the following shows the rigid overhead trolley wire units U and U ′ as a unit U on the left side thereof. 4 will be described. The unit U includes a trolley wire 10, a gantry 11 of the trolley wire 10, and the trolley wire 10 is made of copper or a copper alloy thereof.
As shown in FIG. 4, the gantry 11 is formed of, for example, a general structural rolled steel material such as SS400, a stainless steel material, or the like.
The trolley wire 10 is divided into two at appropriate positions, and the two divided trolley wires 10a and 10b are sandwiched and supported and fixed to the top of the gantry 11 via ears 12 and bolts 13, respectively (FIG. 4). reference). One end of the trolley wire 10a (the right end in FIG. 3) is extended from the gantry 11 and then subjected to terminal processing in an arc shape to reach the top surface of the gantry 11.

The gantry 11 is also divided into two at the same position as the trolley wire 10, and both of the gantry gantry 11 a and 11 b are supported and fixed to a column (fixed body) 16 via a support insulator 15 at a required interval in the length direction. . The gantry 11a that supports one of the trolley wires 10a is fixed in a stationary manner by the fastening member 17 of the support lever 15a, and the gantry 11b that supports the other trolley wire 10b is supported by the support lever 15b so as to be movable in its length direction. ing. In this embodiment, the movement is made possible by not pressing (separating) the lower piece 17a of the fastener 17 from the side flange 11c of the gantry 11 in FIG.
One gantry 11a is provided with a tension insulator 18. One end of the insulator 18 is fixed to the gantry 11a via an angle piece 18a, and the other end is fixed to a fixed body such as a column 16. The tension of the tension insulator 18 is adjusted by the tightening degree of the nut 18b, and one of the trolley wires 10a is mainly supported and fixed to the fixed body (the column 16) through the insulator 18 to resist the tension.

  The divided bases 11a and 11b are connected to one base 11a by an expansion joint 20 so that the other base 11b can move in the length direction. The expansion joint 20 has a connecting plate (abutment plate) 21 extending over the opposite ends of the mounts 11a and 11b applied to both surfaces of the mount web, and the bolts 22 fitted with collars passing through the mount webs. It is attached to the opposite ends of the two racks 11a and 11b by fastening. At this time, the bolt hole of the connection plate 21 applied to the other base 11b is a long hole 23 that is long in the base length direction, and the bolt 22 moves through the collar in the long hole 23. The other frame 11b is movable in the length direction with respect to the one frame 11a.

  In addition, a tension mechanism 30 is provided between the opposing ends of the gantry 11 a and 11 b in the expansion joint 20. As shown in FIG. 3, the tension mechanism 30 has angle pieces (protrusions) 31a and 31b welded to opposite ends of the gantry 11a and 11b, respectively, and a long bolt shape between the angle pieces 31a and 31b. The moving rod 32 is inserted from the other frame 11b side angle piece 31b, the coil spring 33 is inserted into the moving rod 32 protruding from the one frame side angle piece 31a, and a spring stopper 34 is attached to the tip of the moving rod 32. The coil spring 33 is loaded between one angle piece 31a and the spring stopper 34 in a compressed state by screwing. By the coil spring 33 in the compressed state, a tensile force is applied to the other gantry 11b via the movable rod 32 and the other angle piece 31b. That is, the tension mechanism 30 constitutes a tensioning device at one end of the catenary suspension trolley wire 1. The length and elastic modulus of the coil spring 33 are appropriately set so that the tension of the catenary suspension trolley wire 1 described later can be sufficiently secured even when the temperature change and the tension change shown in FIG. 8 occur.

Further, the trolley wires 10a and 10b in the expansion joint 20 are electrically connected to each other by a jumper wire (not shown). For this reason, both the trolley wires 10a and 10b are electrically and mechanically connected by the expansion joint 20 and the connection length thereof can be changed.
On the other hand, the other end portion (left end portion in FIG. 2) of the rigid overhead trolley wire unit U is the end portion of the missing catenary suspension trolley wire 1 (in FIG. 7, the end of the left catenary suspension trolley wire 1). Part) is retracted to the end of the base 11b of the unit U, and is electrically and mechanically connected and fixed by means known in the art using the connection ear 12a. That is, the trolley wire 10 by the rigid overhead wire trolley wire unit U is continuously formed from the left end of the intermediate part where the catenary suspension trolley wire 1 in the factory facility A shown in FIG. An electric wire attachment terminal (feeding terminal) is provided at a required position of the trolley wires 1 and 10 so that the electric cart D can be fed.

  As shown in FIG. 1, the rigid overhead trolley wire unit U ′ having a symmetrical structure with the rigid overhead trolley wire unit U ′ described above is an intermediate one of the catenary suspension trolley wire 1 in the factory equipment A shown in FIG. The trolley wire 10 and the catenary suspension trolley wire 1 by the rigid overhead wire trolley wire unit U ′ are continuously installed electrically at the end of the catenary suspension trolley wire 1 on the right side of the lacking portion C. Fix the connection mechanically. Electric wire attachment terminals (power supply terminals) are also provided at the required positions of the trolley wires 1 and 10 so that the electric cart D can be supplied with power.

  As described above, in the factory facility A shown in FIG. 7, the intermediate part shown in FIG. 1 is missing, and the rigid overhead trolley wire 10 and the catenary suspension trolley wire 1 are provided on both sides of the lack C. The trolley line of the electric carriage D is constructed, and the factory equipment A with the trolley lines 1 and 10 is operated in the conventional manner, and the factory equipment A is updated in the lack part C.

  In this embodiment, as shown in FIG. 8, the temperature around the trolley wires 1 and 10 changes from 0 ° C. to 75 ° C., and the coil spring 33 expands and contracts by 34 mm along with the temperature change. The tension varied from 300 to 150 kg. Within this change, in the trolley wires 1 and 10 in the factory facility A, the trolley wire 1 and the current collecting shoe a can be hardly separated.

  When the update of the factory equipment A in the lacking part C is completed, the trolley lines 1 and 10 are laid between the units U and U ', and the electric cart D on the factory equipment A can be moved. For laying the trolley wire, a rigid overhead trolley wire 10 or a catenary suspension trolley wire 1 is provided between the units U and U '.

  In laying the catenary suspension trolley wire 1, as shown in FIG. 5, the ends of the rigid overhead wire trolley wire units U and U ′ (the opposite end of the connecting portion with the catenary suspension trolley wire 1) ) Is provided with rigid body wire trolley wire units U ′ and U which are symmetrical to the rigid body wire trolley wire units U and U ′. At this time, the air section S is formed as necessary. As shown in FIG. 6, the air section S has an end of the trolley wire 10 of the section mount 11 fixed to the support in the same manner as the rigid body trolley wire units U and U ′. Similar to the trolley wire 10 at the ends of the units U and U ′ (see the right end in FIG. 3), after extending from the gantry 11, end processing is performed in the shape of an arc and reaching the upper surface of the gantry 11, with gaps at both ends It is formed by making it face each other. In this embodiment, a wire attachment terminal 19 is also provided on the gantry 11 between the air sections S, S.

  Usually, the tension of the suspended trolley wire in the catenary overhead line fluctuates, and when the tension is lowered, the current collecting shoe a is likely to be separated, but in this embodiment, the coil spring 33 always provides a constant tension. Therefore, the “tension” of the catenary overhead line can be stabilized, and the current collecting shoe a can be hardly separated. In addition, the rigid body type trolley wire units U and U 'are stable because of the rigid body structure, and it is easy to newly install (restore) the trolley wire 10 using the units U and U'. Further, the trolley wire 10 can be easily insulated, and stable insulation is ensured.

In the embodiment, as shown in FIGS. 1 to 3, only the rigid overhead trolley wire unit U or U ′ is constructed at the end of the catenary suspension trolley wire 1 in the lack portion C. When the lacking part C is also used as the catenary suspended trolley wire 1 after the factory facility A is updated, before or during the update, the rigid overhead trolley wire shown in FIGS. In addition to the unit U or U ′, rigid body type trolley wire units U ′ and U can be constructed.
Moreover, although each said embodiment was the case of the factory equipment A, this invention can be employ | adopted as the trolley wire for electric power feeding of other various factories and electric trolleys other than a factory, and the existing trolley wire The present invention can be adopted even when a part of the trolley wire is missing, when a trolley wire is newly installed at the end of an existing trolley wire, or when a trolley wire is installed in a completely new factory, etc. Of course you can.
Furthermore, the tension mechanism 30 is not limited to the above embodiment, and various other modes such as loading an expanded coil spring between the angle pieces 31a and 31b can be employed.
Thus, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Catenary suspension type trolley line 2 Hanger 3 Hanging line 4 Strut 10 Rigid overhead line type trolley line 10a One divided rigid body type trolley line 10b The other divided rigid body type trolley line 11 Rigid overhead type trolley line gantry 11a One division Rigid body wire trolley wire mount 11b The other divided rigid body wire trolley wire mount 12 Ear 12a Connection ear 13 Bolt 15, 15a, 15b Support insulator 16 Fixed support 17 Fastening bracket 18 Tension insulator 18a Angle piece 18b Nut 20 Expansion Joint 21 Connection plate 22 Bolt 23 Long hole 30 Pulling mechanism 31a, 31b Angle piece (projection piece)
32 Moving rod 33 Coil spring 34 Spring stop a Current collecting shoe A Factory equipment B Retaining device C Absent part D Electric cart S Air section U, U 'Rigid overhead wire trolley wire unit

Claims (3)

  A power supply trolley wire for an electric carriage, including a catenary suspended trolley wire and a rigid body trolley wire, the rigid body trolley wire being divided into two in its length direction, Connected via an expansion joint, one divided trolley wire is supported and fixed to a fixed body, and the other divided trolley wire is supported by the fixed body so as to be movable in its length direction, and the catenary suspended trolley wire A trolley wire structure in which one split trolley wire is tensioned by a tension mechanism with respect to one split trolley wire.   The pulling mechanism is provided with a projecting piece provided at each gantry-facing end of the divided trolley wire, a moving rod is inserted between the projecting pieces, and compressed into a moving rod projecting from one of the gantry-side projecting pieces. The trolley wire structure according to claim 1, wherein the coil spring in a state is inserted, and both ends of the movable rod are prevented from coming off from the projecting piece and the coil spring. When a part of the catenary suspension trolley wire is lacking, and a part of the lack is a rigid overhead trolley wire,
The rigid body-type trolley wire according to claim 1 or 2 is divided into two in the length direction, the two divided trolley wires are connected via an expansion joint, and one of the divided trolley wires is supported and fixed to a fixed body. The other divided trolley wire is supported by a fixed body so as to be movable in the length direction, and the other divided trolley wire is configured so that tension is applied to the other divided trolley wire by a tension mechanism. Wire unit,
This unit pair is placed symmetrically between the two catenary suspension trolley wires at the lack of the catenary suspension trolley wire, and the other divided trolley of one unit is placed on one catenary suspension trolley wire. A trolley wire structure for connecting the wires and connecting the other divided trolley wire of the other unit to the other catenary suspension trolley wire.

Images