JP2018111399A - Wheel shaft transport device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheel shaft transport device which comprises a pair of right and left transport trucks that tranport wheel shafts along a right and left rails set on a floor, reduces required underground pit space where the trucks go and return and which enables the right truck to move synchronously with the left one.SOLUTION: A wheel shaft transport device 10 enables a pair of right and left transport trucks 4 to transport wheel shafts W along rails 1, the pair of right and left transport trucks having a stopper 2 to stop a wheel S of a wheel shaft W on one of a pair of right and left rails 1 set on a floor FL, and a drive motor 3 to move the truck for self-movement and going and returning in an underground pit P in a condition that one of the trucks moves synchronously with the other. Each right and left truck 4 comprises respectively a moving optical transmission device 5 optically transmitting in the direction along the rail, and in the underground pit P, fixed optical transmission devices 6 are set to optically communicate with the moving optical transmission device 5 along the rail and the motors 3 are synchronously controlled based on input and output information optically transmitted along the rail between the moving optical transmission device 5 and fixed optical transmission devices 6.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wheel shaft transfer device for transferring a wheel shaft disassembled from a bogie of a railway vehicle along a rail laid on a floor surface.

  Generally, in a truck inspection line of a railway vehicle, a wheel shaft transport device that transports the wheel shaft along a rail laid on the floor surface in order to transport from the disassembly process of disassembling the wheel shaft to the inspection process of inspecting the disassembled wheel shaft. Is installed. In the conventional wheel shaft conveying device, the weight of the wheel shaft is about 1 ton, and it is not preferable in the work environment that the operator manually conveys the wheel shaft. Therefore, the wheel shaft mounted on the left and right rails laid on the floor surface There is known a device that moves a rail along a rail while locking a wheel shaft by a pair of left and right transport carts having locking claws for locking the wheel. In order to ensure the safety of workers, the floor surface is covered and each carriage is provided with a self-propelled drive motor and reciprocally moves in the underground pit along the rail. In addition, a cable bear (registered trademark), a cable reel, a trolley facility, and the like have been attached to each transport carriage in order to communicate encoder information, position information, and the like of the drive motor with the ground side control device. Therefore, in the conventional wheel-shaft transfer device, a considerable space for accommodating a cable bear, a cable reel, or a trolley facility is required in the underground pit, and the underground pit on which each transfer carriage moves reciprocally must be increased more than necessary. However, space saving of the underground pit was an issue.

  As an invention for solving the above-mentioned problems, for example, Patent Document 1 discloses an invention of a collision prevention control device for a transport device. As shown in FIG. 11, the collision prevention control device 100 of the transport device disclosed in Patent Document 1 is mounted on each of the transport devices of the own device 102 and the other device 103 that reciprocate on the same linear track 101. Distance sensor 104 (laser rangefinder) that directly detects the separation distance X between the machine 102 and the other machine 103 in a non-contact and real-time manner, the target position (Y1, Y2) of the own machine 102 and the other machine 103, the moving direction, and the moving distance The mutual communication device 105 (parallel optical transmission device) that mutually communicates exclusively and in real time, and the separation distance X between the own device 102 and the other device 103, etc. A traveling control device 106 that controls the machine 102 and the other machine 103 is provided.

  According to the collision prevention control device 100 of the transport device, since the transport device of the own device 102 and the other device 103 includes the mutual communication device 105 (parallel optical transmission device), the cable bear, the cable reel, or the trolley. There is no need to install facilities and the like, and even when the transfer device is reciprocated in the underground pit, it is possible to save space in the underground pit.

JP 2007-323112 A

  However, in the collision prevention control device 100 of the transfer device, the separation distance X between the two is measured by the distance sensor 104 (laser distance meter) attached to the own device 102 and the other device 103 that reciprocate on the same linear track 101. And the target position (Y1, Y2) for stopping the own machine 102 and the other machine 103 based on the separation distance X, etc. is calculated. It has been difficult to control a pair of left and right transport carts that move by the above method.

  The present invention has been made to solve such a problem, and it is possible to save space in an underground pit in which a pair of left and right transport carts that transport the wheel shaft along the left and right rails laid on the floor surface reciprocate. Therefore, it is an object of the present invention to provide a wheel-shaft transport device that can move the transport cart in a synchronized manner.

In order to achieve the above object, a wheel shaft conveying apparatus according to the present invention has the following configuration.
(1) A pair of left and right that reciprocate synchronously in the underground pit, provided with a locking portion that locks the wheels of the axles placed on the left and right rails laid on the floor surface, and a self-propelled drive motor. A wheel shaft transfer device for moving the wheel shaft along the rail by the transfer carriage of
The pair of left and right transport carts are each provided with a moving side optical transmission device that transmits light in the rail direction, and fixed light that transmits light in the rail direction between the moving side optical transmission device in the underground pit. Each of the transmission devices includes a transmission device, and the driving-side optical transmission device and the fixed-side optical transmission device perform synchronous control of the drive motor based on input / output information that optically transmits in the rail direction.

  In the present invention, the pair of left and right transport carts are each provided with a moving side optical transmission device that transmits light in the rail direction, and the underground pit is fixed to transmit light in the rail direction with the moving side optical transmission device. Each side optical transmission device is provided, and the drive side motor transmission device and the fixed side optical transmission device synchronously control the drive motor based on input / output information transmitted in the rail direction. Or it becomes unnecessary to attach trolley facilities etc., and the size of an underground pit can be reduced. In addition, since the optical transmission device on the moving side and the optical transmission device on the fixed side optically transmit each other in the rail direction, communication is always performed while driving the input / output information for synchronously controlling the drive motor using the narrow space in the underground pit. be able to. In addition, since the drive motor is controlled synchronously based on input / output information that the moving-side optical transmission device and the fixed-side optical transmission device optically transmit in the rail direction, the pair of left and right transport carts can be moved back and forth synchronously left and right. Can do.

  Therefore, according to the present invention, it is possible to save space in the underground pit in which a pair of left and right transport carts that transport the wheel shaft along the left and right rails laid on the floor surface are reciprocated. Thus, it is possible to provide a wheel-shaft transfer device that can move.

(2) In the wheel carrier described in (1),
The pair of left and right transport carts includes a pair of left and right upstream transport carts that transport the wheel shaft from an upstream loading position to a delivery position, and a pair of left and right downstream vehicles that transport the wheel shaft from the delivery position to a downstream take-out position. It is characterized by being comprised by the side conveyance trolley, respectively.

  In the present invention, the pair of left and right transport carts includes a pair of left and right upstream transport carts that transport the wheel shaft from the upstream loading position to the delivery position, and a pair of left and right transport carts that transport the wheel shaft from the delivery position to the downstream take-out position. Since it is comprised by the downstream conveyance trolley, respectively, the moving distance of a conveyance trolley can be divided | segmented into an upstream and a downstream, and shortening of movement time can be aimed at. Further, the wheel shaft can be continuously conveyed from the upstream side and stored on the rail without waiting for the take-off timing of the wheel shaft on the downstream side. For example, two wheel shafts disassembled from one carriage can be continuously conveyed and stored in a standby position provided between the delivery position and the take-out position, and supplied according to the take-out timing on the downstream side. Therefore, the work efficiency in the cart disassembly process and the wheel shaft inspection process can be greatly improved.

(3) In the wheel carrier described in (2),
The optical axis of the movement side optical transmission device provided in the upstream side conveyance carriage and the optical axis of the movement side optical transmission device provided in the downstream side conveyance carriage in the left and right conveyance carriages are parallel to each other in the rail direction. It is characterized by being spaced apart.

  In the present invention, the optical axis of the moving-side optical transmission device provided in the upstream-side conveying cart and the optical axis of the moving-side optical transmission device provided in the downstream-side conveying cart are parallel to each other in the rail direction. The movement range of the upstream conveyance carriage and the movement range of the downstream conveyance carriage can be wrapped in the rail direction, and even when they are wrapped, the upstream conveyance carriage and the downstream side can be wrapped. The transport carts can be moved in synchronization with each other while preventing the transport carts from colliding with each other.

(4) In the wheel shaft transfer device described in any one of (1) to (3),
An antenna is attached to the transport carriage, and an RF tag that is configured to be communicable with the antenna and stores in advance position information in the rail direction of the transport carriage is arranged in a movement range of the transport carriage.

  In the present invention, the RF tag in which the antenna is attached to the carriage and the position information in the rail direction of the carriage is stored in advance is arranged in the moving range of the carriage. The current position of the transport carriage in the rail direction is identified by comparing the information (pulse value of the encoder) with the position information of the transport carriage in the rail direction stored in advance in the RF tag, and the position information is controlled by the transport carriage. Can be saved. Therefore, even when a sudden power failure occurs, the operation of the transport carriage can be quickly restarted by comparing the position information stored in the control unit of the transport carriage with the position information of the RF tag. As a result, it is possible to reduce actions that are undesirable in the work environment, such as transporting a heavy wheel axle manually by an operator.

  According to the present invention, it is possible to save space in the underground pit in which a pair of left and right transport carts that transport the wheel shaft along the left and right rails laid on the floor surface are reciprocally moved. It is possible to provide a movable wheel shaft transfer device.

It is a schematic plan view of the wheel-shaft conveying apparatus which concerns on embodiment of this invention. It is a schematic side view of the wheel-shaft conveying apparatus shown in FIG. It is AA sectional drawing shown in FIG. It is a D arrow line view shown in FIG. FIG. 3 is a detailed side view of a B part shown in FIG. 2. FIG. 3 is a detailed side view of a C part shown in FIG. 2. It is a detailed partial side view of the wheel shaft fixing device shown in FIG. It is a control block diagram of the conveyance trolley shown in FIG. It is an operation | movement flowchart of the upstream conveyance trolley shown in FIG. It is an operation | movement flowchart of the downstream conveyance trolley shown in FIG. It is a schematic diagram of the collision prevention control apparatus of the conveying apparatus described in patent document 1.

  Next, the wheel-shaft conveying apparatus according to the embodiment of the present invention will be described in detail with reference to the drawings. Specifically, after describing each configuration of the wheel-shaft transport device according to the present embodiment, an operation method of the upstream-side transport cart and the downstream-side transport cart constituting the wheel-shaft transport device will be described.

<Configuration of main wheel shaft transfer device>
First, each structure of the wheel-shaft conveying apparatus which concerns on this embodiment is demonstrated using FIGS. In FIG. 1, the schematic plan view of the wheel-shaft conveying apparatus which concerns on embodiment of this invention is shown. FIG. 2 shows a schematic side view of the wheel-shaft conveying device shown in FIG. FIG. 3 is a cross-sectional view taken along line AA shown in FIG. FIG. 4 shows a view taken in the direction of arrow D shown in FIG. FIG. 5 shows a detailed side view of the portion B shown in FIG. FIG. 6 shows a detailed side view of the portion C shown in FIG. FIG. 7 is a detailed partial side view of the wheel shaft fixing device shown in FIG. FIG. 8 is a control block diagram of the transport carriage shown in FIG.

(Overall configuration of the device)
As shown in FIGS. 1 and 2, the wheel shaft conveying device 10 according to the present embodiment is a locking portion that locks the wheel S of the wheel shaft W placed on the left and right rails 1 laid on the floor surface FL. 2 and a self-propelled drive motor 3, and a pair of left and right transport carts 4 that reciprocate in the underground pit P to move the wheel shaft W along the rail 1 in the transport direction F <b> 2. In addition, the wheel axle transport device 10 is elongated along the left and right rails 1 (1R, 1L) between the disassembling process for disassembling the wheel axle W from the carriage and the inspection process for inspecting the disassembled wheel axle W. Has been placed.

  The transport cart 4 is composed of a pair of left and right upstream transport carts 41R and 41L and a pair of left and right downstream transport carts 42R and 42L. The upstream transport carts 41R and 41L that reciprocate in the direction of the arrow f1 lock the wheel shaft W by the locking portions 2 (21R and 21L) attached to the rear end portion of the transport direction F2, and enter the upstream loading position. Transport from T1 to intermediate delivery position T2. Further, the downstream transport carriages 42R and 42L that reciprocate in the direction of the arrow f2 lock the wheel shaft W by the locking portions 2 (22R and 22L) attached to the front end portion in the transport direction F2, and from the delivery position T2. The sheet is conveyed to the downstream take-out position T3. When the wheel shaft W is present at the take-out position T3, the downstream transport carriages 42R and 42L can temporarily place the wheel shaft W at the first standby position T4 or the second standby position T5. A drive motor 3 (31R, 31L) that causes the upstream conveyance carts 41R, 41L to self-run is mounted at a front end portion in the conveyance direction F2, and a drive motor 3 (32R, 32L) that causes the downstream conveyance carts 42R, 42L to self-propel. Is attached to the rear end of the transport direction F2.

  At the loading position T1, there is installed a loading turntable 81 on which the wheel shaft W conveyed from the direction of arrow F1 is placed and rotated 90 degrees in the direction of arrow Q1. Further, at the take-out position T3, a take-out turntable 82 is installed, which carries the wheel set W and rotates 90 degrees in the direction of arrow Q2 in order to transport the wheel set W to the inspection process in the direction of arrow F3. The loading turntable 81 is formed so that the locking portions 2 (21R, 21L) attached to the rear end portions of the upstream conveyance carts 41R, 41L can enter, and the takeout turntable 82 is provided on the downstream side. The locking portions 2 (22R, 22L) attached to the front end portions of the transport carriages 42R, 42L are formed so that they can enter.

  Further, the pair of left and right transport carts 4 (upstream transport carts 41R and 41L, downstream transport carts 42R and 42L) move side optical transmission devices 5 (51R, 51L, 52R, 52L), and the main body device 17 in the underground pit P has a fixed-side optical transmission device 6 (61R, 61L, 62R, 62L) for optical transmission in the rail direction with the moving-side optical transmission device 5 And the drive-side motor 3 is synchronously controlled based on input / output information in which the moving-side optical transmission device 5 and the fixed-side optical transmission device 6 transmit light in the rail direction. That is, the drive motors 3 (31R, 31L) are synchronously controlled between the pair of left and right upstream transport carriages 41R, 41L, and the drive motor is driven between the pair of left and right downstream transport carriages 42R, 42L. 3 (32R, 32L) are synchronously controlled. Between the moving side optical transmission apparatus 5 and the fixed side optical transmission apparatus 6, bidirectional optical space transmission communication using infrared rays is performed.

  Further, the optical axes KJ1 of the movement-side optical transmission devices 51R and 51L provided in the upstream-side conveyance vehicles 41R and 41L in the left and right conveyance vehicles 4 and the light of the movement-side optical transmission devices 52R and 52L provided in the downstream-side conveyance vehicles 42R and 42L. The axes KJ2 are arranged in parallel with each other and separated from each other in the rail direction. That is, the optical axis KJ1 for optical transmission between the moving-side optical transmission devices 51R, 51L and the fixed-side optical transmission devices 6 (61R, 61L) provided in the upstream-side transport carts 41R, 41L, and the downstream-side transport carts 42R, 42L. The optical axes KJ2 for optical transmission between the moving-side optical transmission devices 52R, 52L and the fixed-side optical transmission devices 6 (62R, 62L) are separated from each other in parallel to the rail direction so as not to intersect each other. Are arranged. Further, each of the optical axes KJ1 and KJ2 travels in the lower space in the underground pit P so as not to be shielded on the way.

(Main unit structure)
As shown in FIGS. 2 and 3, the main body device 17 of the wheel axle transfer device 10 is disposed in the underground pit P, and has a right support frame 172 extending in the direction of the rail 1 (1R, 1L) and a center. A plurality of support frames 173, left support frames 174, each extending in a direction orthogonal to the rail 1 (1R, 1L) direction, and connecting the right support frame 172, the center support frame 173, and the left support frame 174 at their lower ends. The connecting frame 171 is provided. The connection frame 171 is fixed to the floor surface of the underground pit P.

  The right support frame 172 is formed to support the guide rail 13 that guides the right rail 1 (1R) and the right transport carriage 4 (41R, 42R) shown in FIG. The central support frame 173 is formed so as to support the guide rail 14 for guiding the right transport cart 4 (41R, 42R) and the guide rail 15 for guiding the left transport cart 4 (41L, 42L) shown in FIG. ing. The left support frame 174 is formed to support the guide rail 16 that guides the left rail 1 (1L) and the left transport cart 4 (41L, 42L) shown in FIG.

  A floor member 18 formed in the same plane as the floor surface FL is fixed to the upper ends of the right support frame 172, the center support frame 173, and the left support frame 174. The floor member 18 is formed with relief grooves 181 and 182 into which the flange portion Sb of the wheel S of the wheel shaft W contacting the left and right rails 1 (1R and 1L) can enter. An elongate support bracket 175 is fixed horizontally on the left side surface of the right support frame 172 adjacent to the right transport carriage 4 (41R, 42R). Further, on the right side surface of the left support frame 174, a long support bracket 176 is horizontally fixed adjacent to the left transport carriage 4 (41L, 42L). A drive chain 34 is fixed horizontally on the upper surfaces of the support brackets 175 and 176 over the moving range of the transport carriage 4.

  As shown in FIGS. 3 and 4, a plurality of RF tags 72 are attached to the side surfaces of the support brackets 175 and 176 corresponding to the stop positions of the transport carriage 4. Specifically, it corresponds to the input tag 721 corresponding to the input position T1, the original position tag 722 corresponding to the original position T0, the transfer tag 723 corresponding to the transfer position T2, and the first standby position T4. A first standby tag 724, a second standby tag 725 corresponding to the second standby position T5, and an extraction tag 726 corresponding to the extraction position T3 are mounted on the support brackets 175 and 176, respectively. A detector (not shown) for detecting the wheel axis W is disposed at each of the insertion position T1, the original position T0, the delivery position T2, the take-out position T3, the first standby position T4, and the second standby position T5.

(Conveyor cart structure)
As shown in FIGS. 3, 5, and 6, the transport carriage 4 includes a main body frame 40, a drive motor 3, a locking portion 2, a moving side optical transmission device 5, and an antenna 71. The main body frame 40 has a substantially rectangular cross section and is formed in an elongated shape along the rail direction. On the side surface of the main body frame 40, upper and lower guide rollers 42 and 42 that contact the upper and lower surfaces of the guide rails 13, 14, 15, and 16, and horizontal guide rollers that contact the side surfaces of the guide rails 13, 14, 15, and 16, respectively. 43 is rotatably supported. In the transport carriage 4, the main body frame 40 is supported by the guide rails 13, 14, 15, 16 via the upper and lower guide rollers 42 and the horizontal guide rollers 43, and moves horizontally in the transport direction F2 (see FIG. 1). Can do. The moving side optical transmission device 5 is fixed to the lower surface of the main body frame 40, and an optical axis KJ2 (KJ1) for optical transmission with the fixed side optical transmission device 6 fixed to the upper surface of the connection frame 171 is arranged in the rail direction. It arrange | positions so that it may become substantially horizontal shape along.

  In addition, a sprocket 33 that engages with the drive chain 34 fixed to the support brackets 175 and 176 of the main body device 17 is attached to the drive motor 3 via a speed reducer. The drive motor 3 is a servo motor, and includes an encoder device that calculates and outputs the rotational speed and the like. In addition, one antenna 71 is mounted on each side surface of the main body frame 40 in the vicinity of the drive motor 3. Each antenna 71 performs non-contact communication with the RF tag 72 mounted on the support brackets 175 and 176, and RF information in which position information in the rail direction of each transport carriage 4 (41R, 41L, 42R, 42L) is stored in advance. The position information is received from the tag 72. Communication is performed between the antenna 71 and the RF tag 72 by microwaves (radio waves).

  Further, as shown in FIG. 6, the locking portion 2 includes a locking claw (roller body) 212 that comes into contact with the flange portion Sb of the wheel S from the front and rear. ) 212 is brought into contact with the outer periphery of the flange Sb of the wheel S and conveyed while engaging (regulating) the wheel shaft W. After the wheel shaft W is conveyed to a predetermined position, the engagement claw (roller body) 212 is moved downward to release the engagement state with the wheel shaft W.

  For example, one end 211a is pivotally supported by the main body frame 40 and the other end 211b of the L-shaped claw portion 211 is pivotally supported by the locking portion 2 and the other end 211b of the L-shaped claw portion 211. The roller body 212 that abuts against the collar portion Sb of the S, the upper end 213b is pivotally supported by the curved portion of the L-shaped claw portion 211, and the lower end 213a is guided by the horizontal guide surface 40a of the main body frame 40 and moves in the direction of the arrow r2. The support piece 213 formed in a possible manner, the wire 214 connected to the support piece 213, the winding device 215 for winding the wire 214 in the direction of the arrow r3, and the support piece 213 in the winding direction of the winding device 215 On the other hand, a spring member 216 that is biased in the opposite direction is provided at a position that is symmetric with respect to a normal line Sc that passes through the axis of the wheel S.

  When the transport carriage 4 transports the wheel shaft W along the rail 1, the wire 214 of the winding device 215 is loosened and the support piece 213 is erected vertically by the biasing force of the spring member 216. When the support piece 213 stands upright, the roller body 212 pivotally supported by the other end 211b of the L-shaped claw portion 211 moves upward from the upper end of the rail 1, and the roller body 212 is moved to the flange portion Sb of the wheel S. Make contact with the outer circumference. On the other hand, when the wheel axle W is temporarily placed at a predetermined position (delivery position T2 or the like) and the transport carriage 4 moves to the original position, the winding device 215 winds the wire 214 and the support piece 213 is laid down horizontally. Let When the support piece 213 falls horizontally, the roller body 212 pivotally supported by the other end 211b of the L-shaped claw portion 211 moves downward from the upper end of the rail 1, and the roller body 212 is moved to the flange portion Sb of the wheel S. Keep away from.

  As shown in FIGS. 6 and 7, for example, when the wheel shaft W transported to the delivery position T2 is temporarily placed on the rail 1, the wheel shaft fixing device 19 that temporarily fixes the wheel shaft W is provided with the right support frame 172 and the left The upper end of the support frame 174 is disposed near the rail 1 (1R, 1L). The wheel-shaft fixing device 19 is also disposed on the loading turntable 81 and the takeout turntable 82. The wheel-shaft fixing device 19 includes a stop claw 191 that comes into contact with the rail contact portion Sa of the wheel S from the front and the rear when standing. When the stop claw 191 falls down, it moves away from the rail contact portion Sa of the wheel S and moves downward from the upper end of the rail 1.

  For example, the wheel shaft fixing device 19 includes a stop claw 191 whose one end contacts the rail contact portion Sa of the wheel S, an arm portion 193 connected to the other end of the stop claw 191 via the shaft portion 193b, and a shaft portion. A bearing portion 192 that rotatably supports 193b, a case 194 having an insertion long hole 194a through which a locking pin 193a locked to the lower end of the arm portion 193 can be horizontally moved, and the case 194 are fitted in the case 194 A tension spring 195 that urges the locking pin 193a in the horizontal direction, a cylinder body 196 having a cylinder rod 196a fastened to the case 194, and a support member 197 that supports the cylinder body 196 are connected to the axis of the wheel S. At a position that is symmetric with respect to the perpendicular line Sc passing through.

  When the cylinder rod 196a of the cylinder body 196 is shortened in the direction of the arrow h2, the arm portion 193 is rotated by being pulled by the tension spring 195. As the arm portion 193 rotates, the retaining pawl 191 pivots in the direction of the arrow h1 and stands up, and one end of the retaining pawl 191 contacts the rail contact portion Sa of the wheel S. Accordingly, the wheel shaft W can be temporarily fixed at a predetermined position (such as the delivery position T2). On the other hand, when the wheel shaft W is opened, the catching claw 191 is laid down by extending the cylinder rod 196a of the cylinder body 196. Even when the pawl 191 is standing upright, the pawl 191 can be laid down by extending the tension spring 195.

(Control unit for transport cart)
Moreover, as shown in FIG. 8, the control part 9 of the conveyance trolley | bogie 4 includes the movement side control part 91 mounted in each conveyance trolley | bogie 4 (41R, 41L, 42R, 42L), and the fixed side control installed on the ground. Part 92. The moving side control unit 91 includes a remote I / F (remote interface) 91 a connected to the drive motor 3, the antenna 71, and the moving side optical transmission apparatus 5. The fixed-side control unit 92 includes a PLC (programmable logic controller) 92 a connected to the RF tag 72 and the fixed-side optical transmission device 6. Between the moving side control unit 91 and the fixed side control unit 92, a CC-link system is constructed by optical transmission between the moving side optical transmission device 5 and the fixed side optical transmission device 6, and the transport carriage 4 is moved synchronously. The accompanying large volume of input / output information can be communicated at high speed.

  For example, in order to move the pair of left and right transport carts 4 synchronously, encoder information of each drive motor 3 is transmitted from the moving side control unit 91 to the fixed side control unit 92 by optical transmission, and at the same time from the fixed side control unit 92 in synchronization. Necessary control commands can be transmitted to each moving side control unit 91 by optical transmission.

  In addition, since the pulse value that is the encoder information of the drive motor 3 changes at a very high speed in a short time, if the pulse value that is the encoder information is written in the non-volatile storage area in the PLC 92a, there is a possibility that a positional shift occurs at the time of a power failure. There is. That is, at the time of a power failure, the pulse value which is the encoder information of the drive motor 3 is interrupted at the same time as the power is cut off, but the machine side of the transport carriage 4 may run idle, which may cause a positional deviation from the pulse value. The position information of the transport carriage 4 is stored in advance in the RF tag 72 in order to avoid the position shift, the position information is received from the RF tag 72 by the antenna 71, and the PLC 92a of the fixed side control unit 92 is received. Is stored in the non-volatile storage area as the latest position information. Further, the fixed side control unit 92 transmits a control command for the moving speed and stop position of the transport carriage 4 to each moving side control unit 91 by optical transmission based on the position information and encoder information read from the RF tag 72. . The fixed-side control unit 92 also transmits a control command for preventing the collision between the upstream-side transport carts 41R and 41L and the downstream-side transport carts 42R and 42L to each moving-side control unit 91 by optical transmission.

  Note that the mobile-side control unit 91 includes only a remote I / F and does not need to include a PLC for communication. Further, even when a sudden power failure occurs and the encoder information is deleted, by comparing the position information stored in the RF tag 72 with the latest position information stored in the nonvolatile storage area in the PLC 92a, An error in the encoder information can be determined and corrected, and as a result, the operation of the transport carriage 4 can be restarted quickly.

<Operation method of transport cart>
Next, an operation method of the conveyance carriage 4 in the wheel shaft conveyance device 10 according to the present embodiment will be described with reference to FIGS. 9 and 10. FIG. 9 shows an operation flow diagram of the upstream conveyance carriage shown in FIG. FIG. 10 shows an operation flow diagram of the downstream transport carriage shown in FIG.

(Operation flow of upstream transport cart)
As shown in FIG. 9, first, the upstream conveyance carriages 41R and 41L stand by at the original position T0 adjacent to the loading position T1, and confirm whether or not the wheelset W is present at the loading position T1 (step S1). If the wheel position W is at the input position T1, the upstream conveyance carts 41R and 41L move to the input position T1 and clamp the wheel axis W (step S2). Clamping of the wheel shaft W is performed by a locking claw (roller body) 212 of the locking portion 2 coming into contact with the outer periphery of the flange Sb of the wheel S. When the fixed side control unit 92 obtains the position information of the upstream conveyance carriages 41R and 41L arriving at the input position T1 from the input tag 721, the clamp command for the locking unit 2 is obtained from the fixed side control unit 92 and the moving side control unit. Directed to the locking portion 2 via 91. If the wheelset W is not present at the closing position T1, the upstream conveyance carts 41R and 41L stand by at the original position T0 (step S3).

  Next, it is confirmed whether or not the downstream transport carriages 42R and 42L and the wheel shaft W are present at the delivery position T2 (step S4). When the downstream transport carriages 42R and 42L and the wheel shaft W are not present at the delivery position T2, the upstream transport carriages 41R and 41L transport the wheel shaft W to the delivery position T2 (step S5). The transport commands for the upstream transport carts 41 </ b> R and 41 </ b> L are directly commanded from the fixed control unit 92 to the drive motor 3 via the moving control unit 91. In addition, when the wheelset W exists in the delivery position T2, the upstream conveyance carts 41R and 41L once transport the wheelset W to the original position T0 (step S6). This is because if the wheel shaft W is present at the loading position T1, the wheel shaft W cannot be loaded from the disassembling process, and the working efficiency of the disassembling process is reduced.

  Next, after the upstream transport carts 41R and 41L transport the wheel shaft W to the delivery position T2, the wheel shaft W is unclamped, and the wheel shaft fixing device 19 temporarily fixes the wheel shaft W to the delivery position T2 (step S7). The wheel shaft W is temporarily fixed by raising (clamping) a pawl 191 of the wheel shaft fixing device 19 that contacts the rail contact portion Sa of the wheel S from the front and rear. The unclamping of the wheel shaft W is performed by releasing the clamped state of the locking portion 2. When the fixed side control unit 92 detects the wheel position W of the delivery position T2 and obtains the position information on the upstream conveyance carriages 41R and 41L arriving at the delivery position T2 from the delivery tag 723, the fixed side control unit 92 At the same time as instructing clamping to the wheel-shaft fixing device 19, an unclamping instruction is directly issued to the locking unit 2 via the moving side control unit 91.

  Next, the upstream conveying carts 41R and 41L move to the original position T0 while releasing the clamped state of the locking portion 2 (step S8). The upstream transport carts 41R and 41L repeat the above operation to transport the wheel shaft W from the loading position T1 to the intermediate delivery position T2.

(Operation flow of downstream transport cart)
As shown in FIG. 10, first, the downstream transport carriages 42R and 42L stand by at the delivery position T2, and confirm whether or not the wheelset W is present at the take-out position T3 (step S9). If there is no wheel set W at the take-out position T3, the wheel set W close to the take-out position T3 is clamped and conveyed to the take-out position T3 (step S10). For example, when the wheelset W is present at any of the delivery position T2, the first waiting position T4, and the second waiting position T5, the wheelset W at the second waiting position T5 closest to the take-out position T3 is transported first. . Thereafter, the material is conveyed in the order of the wheel shaft W at the first standby position T4 and the wheel shaft W at the delivery position T2. The transport commands for the downstream transport carts 42 </ b> R and 42 </ b> L are directly commanded from the fixed control unit 92 to the drive motor 3 via the moving control unit 91.

  When the wheel shaft W is present at the take-out position T3, the downstream transport carriages 42R and 42L once transport the wheel shaft W to the first standby position T4 or the second standby position T5 (step S11). If there is no wheel set W at the first standby position T4 and the second standby position T5, the first standby position T4 and the second standby position T5 are transported first to the second standby position T5 close to the take-out position T3. This is because, when the wheelset W is at the delivery position T2, the operating rate of the upstream transport carts 41R and 41L decreases.

  Next, after the downstream transport carriages 42R and 42L take out the wheel shaft W to the take-out position T3, the wheel shaft W is unclamped, and the wheel shaft fixing device 19 temporarily fixes the wheel shaft W at the take-out position T3 (step S12). The wheel shaft W is temporarily fixed by raising (clamping) a pawl 191 of the wheel shaft fixing device 19 that contacts the rail contact portion Sa of the wheel S from the front and rear. The unclamping of the wheel shaft W is performed by releasing the clamped state of the locking portion 2. If the fixed side control unit 92 detects the wheel axis W at the take-out position T3 and acquires the position information when the downstream transport carriages 42R and 42L arrive at the take-out position T3 from the take-out tag 726, the fixed-side control unit 92 At the same time as instructing clamping to the wheel-shaft fixing device 19, an unclamping instruction is directly issued to the locking unit 2 via the moving side control unit 91.

  Next, the downstream transport carriages 42R and 42L move to the delivery position T2 while releasing the clamped state of the locking portion 2 (step S13). The downstream transport carts 42R and 42L repeat the above operation to transport the wheel shaft W from the delivery position T2 to the take-out position T3. As described in detail above, the upstream transport carts 41R and 41L and the downstream transport carts 42R and 42L cooperate with each other to efficiently transport the wheel shaft W from the input position T1 to the extraction position T3.

<Effect>
As described above, according to the wheel-shaft transport device 10 according to the present embodiment described in detail, the pair of left and right transport carts 4 are each provided with the moving-side light transmission device 5 that performs light transmission in the rail direction, and in the underground pit P. A fixed-side optical transmission device 6 that transmits light in the rail direction between the moving-side optical transmission device 5 and the moving-side optical transmission device 5 and the fixed-side optical transmission device 6 that transmit light in the rail direction to each other. Since the drive motor 3 is synchronously controlled based on the output information, it is not necessary to attach a cable bear, a cable reel, a trolley facility, or the like to the transport carriage 4, and the size of the underground pit P can be reduced. In addition, since the moving side optical transmission device 5 and the fixed side optical transmission device 6 optically transmit each other in the rail direction, input / output information for synchronously controlling the drive motor 3 using the narrow space in the underground pit P, You can always communicate while driving. Further, since the drive motor 3 is synchronously controlled on the basis of input / output information in which the moving side optical transmission device 5 and the fixed side optical transmission device 6 optically transmit each other in the rail direction, the pair of left and right transport carts 4 are synchronized in the left and right direction. It can be reciprocated.

  Therefore, according to this embodiment, space saving of the underground pit P in which the pair of left and right transport carts 4 that transport the wheel shaft W along the left and right rails 1 (1R, 1L) laid on the floor surface FL reciprocate. Therefore, it is possible to provide the wheel-shaft transfer device 10 that can move the transfer carriage 4 in synchronization with left and right.

  According to the present embodiment, the pair of left and right transport carts 4 includes the pair of left and right upstream transport carts 41R and 41L that transport the wheel shaft W from the upstream loading position T1 to the delivery position T2, and the wheel shaft from the delivery position T2. Since each of the left and right downstream transport carts 42R and 42L transports W to the downstream take-out position T3, the travel distance of the transport cart 4 can be divided between the upstream side and the downstream side, Travel time can be shortened. Further, the wheel shaft W can be continuously conveyed from the upstream side and stored on the rail without waiting for the take-off timing of the wheel shaft W on the downstream side. For example, a standby position (for example, a first standby position T4, a second standby position T5) provided between the delivery position T2 and the take-out position T3 by continuously transporting two wheel shafts W disassembled from one carriage. And can be supplied according to the take-out timing on the downstream side. Therefore, the working efficiency in the disassembly process of the carriage and the inspection process of the wheel shaft W can be greatly improved.

  Further, according to the present embodiment, the optical beams KJ1 of the movement-side optical transmission devices 51R and 51L provided in the upstream-side conveyance carriages 41R and 41L in the left and right conveyance carriages 4 and the movement-side light provided in the downstream-side conveyance carriages 42R and 42L. Since the optical axes KJ2 of the transmission devices 52R and 52L are spaced apart from each other in parallel to the rail direction, the movement range of the upstream conveyance carts 41R and 41L and the movement range of the downstream conveyance carts 42R and 42L Can be wrapped in the rail direction, and even when wrapped, the upstream transport carts 41R and 41L and the downstream transport carts 42R and 42L move in synchronization with each other while preventing them from colliding with each other. Can be made.

  In addition, according to the present embodiment, the antenna 71 is attached to the transport carriage 4, and the RF tag 72 that is formed so as to be communicable with the antenna 71 and stores the positional information in the rail direction of the transport carriage 4 in advance is moved. Since it is arranged in the range, by comparing the encoder information (encoder pulse value) of the drive motor 3 with the position information in the rail direction of the transport carriage 4 stored in the RF tag 72 in advance, the rail information of the transport carriage 4 in the rail direction is checked. The current position can be identified, and the position information can be stored in the control unit 9 of the transport carriage 4. Therefore, even when a sudden power failure occurs, the operation of the transport carriage 4 can be quickly resumed by comparing the position information stored in the control unit 9 of the transport carriage 4 with the position information of the RF tag 72. it can. As a result, it is possible to reduce actions that are undesirable in the work environment, such as transporting the heavy wheel axle W manually by the operator.

<Modification>
The wheel-shaft conveying device 10 of the present embodiment has been described in detail above, but the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention. For example, in this embodiment, the pair of left and right transport carts 4 includes upstream transport carts 41R and 41L that transport the wheel shaft W from the upstream loading position T1 to the delivery position T2, and the downstream wheel shaft W from the delivery position T2. It is composed of downstream transport carts 42R and 42L that transport to the take-out position T3, but is necessarily composed of upstream transport carts 41R and 41L (two) and downstream transport carts 42R and 42L (two). do not have to. For example, a pair of left and right transport carts 4 (only two) may transport the wheel shaft W from the upstream input position T1 to the downstream extraction position T3. Even in this case, the pair of left and right transport carts 4 (only two) reciprocate synchronously to store the axle W at the standby position (for example, the first standby position T4 and the second standby position T5) in the middle of the rail. can do.

  INDUSTRIAL APPLICABILITY The present invention can be used as a wheel shaft transfer device that transfers a wheel shaft disassembled from a bogie of a railway vehicle along a rail laid on the floor.

1, 1R, 1L Rail 2, 21R, 21L, 22R, 22L Locking part 3, 31R, 31L, 32R, 32L Drive motor 4, 41R, 41L, 42R, 42L Conveyor cart 5, 51R, 51L, 52R, 52L Side optical transmission device 6, 61R, 61L, 62R, 62L Fixed side optical transmission device 10 Wheel shaft transfer device 41R, 41L Upstream transfer carriage 42R, 42L Downstream transfer carriage 71 Antenna 72 RF tag FL Floor surface KJ1, KJ2 Optical axis P Underground pit S Wheel T1 Loading position T2 Delivery position W Wheel axle

Claims (4)

A pair of left and right transport carts that reciprocate synchronously in the underground pit with a locking portion that locks the wheels of the wheel shafts placed on the left and right rails laid on the floor and a self-propelled drive motor A wheel shaft transfer device that moves the wheel shaft along the rail,
The pair of left and right transport carts are each provided with a moving side optical transmission device that transmits light in the rail direction, and fixed light that transmits light in the rail direction between the moving side optical transmission device in the underground pit. A wheel-shaft conveying apparatus comprising: a transmission apparatus, wherein the drive motor is synchronously controlled based on input / output information that the moving-side optical transmission apparatus and the fixed-side optical transmission apparatus perform optical transmission with each other in the rail direction. In the wheel carrier according to claim 1,
The pair of left and right transport carts includes a pair of left and right upstream transport carts that transport the wheel shaft from an upstream loading position to a delivery position, and a pair of left and right downstream vehicles that transport the wheel shaft from the delivery position to a downstream take-out position. A wheel-shaft transport device comprising a side transport cart. In the wheel carrier according to claim 2,
The optical axis of the movement side optical transmission device provided in the upstream side conveyance carriage and the optical axis of the movement side optical transmission device provided in the downstream side conveyance carriage in the left and right conveyance carriages are parallel to each other in the rail direction. A wheel-shaft conveying device, characterized in that it is spaced apart. In the wheel-shaft conveying apparatus as described in any one of Claims 1 thru | or 3,
An axle is mounted on the transport carriage, and an RF tag that is formed so as to be communicable with the antenna and stores in advance the positional information in the rail direction of the transport carriage is disposed in the movement range of the transport carriage. apparatus.

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