JP4664888B2 - Dolly connecting device and dolly connecting structure - Google Patents

Description

The present invention and a reference example thereof relate to a cart connecting device, a cart connecting structure, and a cart control method used for connecting carts traveling on rail tracks.

As a cart connecting device, for example, a telescopic adjustment connecting device described in Patent Document 1 described below is known.
The expansion / contraction adjustment connecting device is extendable in the traveling direction of the carriage, so that even when the carriage is connected in an endless loop shape, the expansion and contraction generated in the connecting device can be absorbed. It can be done.
In addition, the expansion / contraction adjustment coupling device is elastically biased in the reduction direction, whereby the traveling driving force of the carriage is transmitted without interruption to the adjacent traveling carriage via the expansion / contraction adjustment coupling device. The load is applied to these carts almost evenly.

JP-A-6-263217

However, since this extension / contraction adjustment coupling device can be extended and contracted in the traveling direction of the carriage, a difference in the speed of each carriage is likely to occur. Therefore, there is a possibility that hit the carriage adjacent to the traveling. Also, due to the difference in the speed of each carriage, a large load is applied to the drive device that drives the carriage, or the carriage wheel may be idled by being pushed or pulled by the adjacent carriage. There is sex. Thus, if the wheel is idling during traveling, it is not possible to accurately control the cart in the type of cart whose operation is controlled based on the state of rotation of the wheel.
These problems become more serious as the weight of the carriage and the load increases.
For this reason, when this expansion / contraction adjustment coupling device is used, it is necessary to strictly control the operation of the carriage so that there is no difference in the speed of each carriage.

  On the other hand, when the relative displacement between the trolleys is regulated and the structure for connecting the trolleys has no play, the distance between the trolleys changes due to thermal expansion and contraction in the connecting device. When carrying out cargo handling with the carriage stopped, it becomes difficult to accurately position the carriage at the cargo handling position. Also, even if the coupling device is operated under conditions where thermal expansion and contraction do not occur, it is necessary to strictly control the stop position of the carriage so that each carriage stops at the corresponding cargo handling position.

The present invention and the reference example thereof have been made in view of such circumstances, and are a cart coupling device and a cart that can prevent rattling of a running cart while facilitating positioning at the time of stopping. It is an object of the present invention to provide a connection structure and a cart control method.

In order to solve the above problems, the present invention and its reference examples employ the following means.
That is, the present invention is a cart coupling device that couples a cart traveling on a rail track, the coupling mechanism coupling the adjacent carts in a relatively displaceable manner, and the relative relationship between the carts coupled by the coupling mechanism. There is provided a truck coupling device having a displacement regulating device for regulating displacement.

When the carts are connected using the cart connecting device configured as described above, the relative displacement between adjacent carts is regulated by the displacement regulating device, so that there is a difference in the speed of each cart during the running of the cart. No longer occurs. That is, in this cart connecting device, the cart can be prevented from rattling during traveling, so that the carts adjacent to each other do not collide, and the carts are not pushed or pulled by the carts adjacent to each other.
On the other hand, since the connecting mechanism of this cart connecting device connects adjacent carts so that they can be relatively displaced, each cart can be independently displaced in a state where the regulation of the relative displacement of the cart by the displacement regulating device is released. it can. For this reason, when stopping a trolley | bogie, a stop position can be adjusted separately about each trolley | bogie, and positioning of each trolley | bogie is easy.

Here, when stopping the trolleys, after the trolleys are temporarily stopped, the restriction of the relative displacement between the trolleys by the displacement regulating device may be released, and the stop position may be adjusted individually for each trolley.
Also, when stopping the carriage, immediately before stopping (that is, when the carriage is sufficiently decelerated), the restriction of the relative displacement of the carriage by the displacement regulating device is released and the stop position is controlled for each carriage. Also good. In this case, since the position adjustment amount for positioning each carriage with respect to the target stop position after the carriage stops is small or unnecessary, positioning work is facilitated.

  In this cart coupling device, the coupling mechanism includes a base portion provided in each of the adjacent carts, and a coupling member that connects the base portions, and the one base portion is spaced apart in the coupling direction of the cart. A pair of stoppers, and a support member provided between the pair of stoppers so as to be displaceable in the connecting direction of the carriage, the connecting member supporting the one base The displacement regulating device may be connected via a member, and may include a pressing mechanism that selectively presses and fixes the support member to one of the pair of stoppers.

In this case, the connecting member that connects the bases provided in the adjacent carts is connected to one of the bases via a support member that can be displaced in the connecting direction of the cart.
For this reason, in the state where the displacement of the support member is allowed, the relative displacement of the adjacent cart is allowed, and the relative displacement of the adjacent cart is regulated by regulating the displacement of the support member by the displacement regulating device.
Specifically, by pressing the support member against one of the stoppers by the pressing mechanism, the displacement of the support member is restricted, and the relative displacement of the adjacent carriage is restricted. Further, by releasing the pressing of the supporting member by the pressing mechanism, the restriction of the displacement of the supporting member is released, and the relative displacement of the adjacent carriage is allowed.

Here, in this trolley coupling device, the interval between the trolleys in a state in which the relative displacement is restricted varies depending on the pressing direction of the support member by the pressing mechanism.
Specifically, in a state where the support member is pressed against the stopper on the other base side (that is, the adjacent cart side) by the pressing mechanism, the support member is fixed in a state of being displaced to the adjacent cart side. The relative displacement of the carriage is restricted with the interval being maximized.
On the other hand, in a state in which the support member is pressed against the stopper in the direction away from the other base (ie, away from the adjacent carriage) by the pressing mechanism, the support member is fixed in a state of being displaced to the side away from the adjacent carriage. Therefore, the relative displacement of the carriage is restricted with the distance between the carriages being minimized.

  For this reason, when connecting a trolley | bogie using this trolley | bogie connection apparatus, it is so that the space | interval between trolley | bogies may become uniform as a whole (movement of each trolley | bogie when positioning each trolley with respect to each cargo handling position, respectively) In order to reduce the amount), one of the adjacent dolly coupling devices regulates the relative displacement of the dolly while increasing the distance between adjacent dolly, and the other reduces the distance between adjacent dolly. It is preferable to restrict the relative displacement of the carriage.

Further, the support member is provided so as to be swingable about one axis on a plane parallel to the connection direction of the carriage with respect to the one base portion, and the pressing mechanism includes, among the support members, You may be set as the structure which presses the position spaced apart from the rocking | swiveling center of the said supporting member rather than the connection part with the said connection member.
In this case, the support member functions as a “lever” that expands and transmits the pressing force of the pressing mechanism to the connecting member.
For this reason, less force is required for the pressing mechanism to fix the support member, and the pressing mechanism can be reduced in size and cost.

Further, the coupling mechanism may have an impact buffering device.
In this case, the shock applied between the carriages is buffered by the shock absorber provided in the coupling mechanism, so even if a strong force is applied between the carriages, such as when the carriage stops suddenly, the carriage and the coupling mechanism are damaged. Is unlikely to occur.

The present invention provides a truck connecting structure using the truck connecting apparatus according to the present invention.
With the cart connecting structure configured in this way, it is possible to prevent the cart from rattling during traveling, so that an adjacent cart hits, or the cart is pushed or pulled by the adjacent cart. There is no.
Further, in this cart connecting structure, each cart can be independently displaced in the state where the regulation of the relative displacement of the cart by the displacement regulating device is released, so that the positioning of each cart when stopping the cart is easy. is there.

The present invention and a reference example thereof include a connecting mechanism for connecting a plurality of carts traveling on a rail track by a cart connecting device, and connecting the cart connecting devices so that adjacent carts can be relatively displaced, and the connecting A displacement restricting device for restricting relative displacement of the carts connected by a mechanism, the displacement restricting device restricts the relative displacement of the carts when the cart is running, and the displacement regulation device when the carts are stopped. There is provided a cart control method for canceling the restriction of the relative displacement of the cart by the apparatus and controlling the stop position for each cart.

In this cart control method, when the cart is traveling, the relative displacement between the carts is regulated by the displacement regulating device, so that there is no difference in the speed of the carts while the cart is running. That is, in this trolley coupling device, the trolley of the trolley is prevented from rattling during traveling, so that the trolley does not collide or is pushed or pulled by the trolley.
In this cart control method, when stopping the cart, the regulation of the relative displacement of the cart by the displacement regulating device is released and the stop position is controlled for each cart, so that the cart is easily positioned. Can do.

Here, when stopping the trolleys, after the trolleys are temporarily stopped, the restriction of the relative displacement between the trolleys by the displacement regulating device may be released, and the stop position may be adjusted individually for each trolley.
Also, when stopping the carriage, immediately before stopping (that is, when the carriage is sufficiently decelerated), the restriction of the relative displacement of the carriage by the displacement regulating device is released and the stop position is controlled for each carriage. Also good. In this case, since the position adjustment amount for positioning each carriage with respect to the target stop position after the carriage stops is small or unnecessary, positioning work is facilitated.

Here, in the above-described cart control method, a state in which the interval between the carts is larger or smaller than the interval at the time of handling (that is, the interval between the carts when each cart is positioned with respect to the loading position). When the relative displacement of the carriage is restricted by the displacement restricting device, the distance to move each carriage when positioning each carriage with respect to the cargo handling position is increased.
Therefore, when the carriage is running, by alternately arranging the connection structure in which the interval between the carriages is larger than the interval at the time of handling and the connection structure in which the interval between the carriages is smaller than the interval at the time of handling, Overall, the distance between the trucks is averaged to be close to the distance at the time of loading, so the distance to move each carriage when positioning each carriage with respect to the loading position becomes small, and the positioning work of the carriage Becomes easy.

According to the bogie connection device, the bogie connection structure, and the bogie control method according to the present invention and the reference example thereof, the wobble of the bogie during travel can be prevented. Will not be pushed or pulled by the adjacent cart.
Moreover, according to the cart coupling device, the cart coupling structure, and the cart control method according to the present invention and its reference example , each cart is displaced independently in a state in which the regulation of the relative displacement of the cart by the displacement regulating device is released. Therefore, positioning of each carriage when stopping the carriage is easy.

Hereinafter, an embodiment of the present invention and a reference example thereof will be described with reference to the drawings.
In this embodiment, the example which applied this invention and its reference example to the connection structure of the trolley | bogie 1 shown in FIG.1 and FIG.2 is shown.
The conveyance carriage 1 is a carriage used for conveyance of heavy objects such as a steel plate coil, and travels on a rail track 2 having a pair of rails 2a arranged in parallel in a connected state. . In the present embodiment, an example in which the conveyance carriage 1 is connected to five.

As shown in FIG. 2, on the rail track 2, a skid 4 is adjacently disposed at a cargo handling position where the transport carriage 1 is loaded or unloaded.
The skid 4 is a platform provided so as to protrude upward from the laying position of the rail track 2, and a ground rail 6 is provided on the upper surface along a direction substantially orthogonal to the rail track 2. In this embodiment, the ground rail 6 is comprised by a pair of parallel rail. A clearance is secured between the transport carriage 1 and the skid 4 traveling on the rail track 2 so that the transport carriage 1 and the skid 4 do not interfere with each other.

In the present embodiment, the carriage 1 is a carriage used for conveying the steel plate coil C as shown in FIG.
The transport carriage 1 includes a main carriage 11 that runs on the rail track 2, a carriage rail 12 that is provided on the parent carriage 11 along a direction that intersects the running direction, and a steel plate coil C that receives the steel plate coil C. And a child carriage 13 that moves. As shown in FIG. 2, the bogie rail 12 is constituted by a pair of parallel rails arranged at the same interval as the ground rail 6.
As shown in FIG. 1, the main carriage 11 is provided with wheels 14 that roll on the rails 2 a so as to correspond to the rails 2 a of the rail track 2. In the present embodiment, wheels 14 are provided at each of the four corners of the bottom of the main carriage 11 so as to be rotatable around the axis.

  These wheels 14 are provided with independent driving devices, and each wheel 14 is driven independently. In other words, each wheel 14 is driven asynchronously by the driving device, and a difference is made between the rotational speed of the wheel 14 corresponding to one rail 2a and the rotational speed of the wheel 14 corresponding to the other rail 2a. It can be generated. As a result, the carriage 1 can smoothly travel not only on the straight line portion but also on the curved portion of the rail track 2.

As shown in FIG. 2, the main carriage 11 is provided with a fixing device 16 that positions and fixes the main carriage 11 at a predetermined position on the rail track 2.
As shown in FIG. 3, the fixing device 16 includes a pair of clamp claws 17 arranged in the traveling direction in the main carriage 11 and a drive device 18 that drives the clamp claws 17. Anchors 19 are provided on the side surfaces of the skid 4 facing the rail track 2 so as to correspond to the stop positions of the respective carriages 1.

In this embodiment, each clamp nail | claw 17 has the base B hold | maintained at the main trolley | bogie 11, and the nail | claw T provided by protruding from the base B.
The base B is supported by the main carriage 11 so as to be swingable about a substantially vertical axis, and the base B is swung about the substantially vertical axis by the driving device 18 so that the claws T of the pair of clamp claws 17 are moved. The tips are close to or separated from each other.
Of the pair of clamp claws 17, the tip of the claw T of one clamp claw 17a is bent toward the other clamp claw 17b, and the tip of the claw T of the other clamp claw 17b is one clamp claw 17a. It is bent toward.
The anchor 19 has a protrusion 19 a that protrudes toward the rail track 2, and the protrusion 19 a is sandwiched between the pair of clamp claws 17.

Of the pair of clamp claws 17, a base portion B of one clamp claw 17 a is provided with a protruding portion P that protrudes in the radial direction. One clamp claw 17a is configured to swing around the swing axis by pressing or pulling the protrusion P around the swing axis of the base B.
The drive device 18 is constituted by a hydraulic cylinder that presses or pulls the protrusion P.

  The base B of one clamp claw 17a has a gear G formed at a portion facing the other clamp claw 17b. Further, the base B of the other clamp claw 17b is provided with a gear G that meshes with the gear G of the one clamp claw 17a at a portion facing the one clamp claw 17a. Thus, when one clamp claw 17a is swung, the other clamp claw 17b is swung in the reverse direction in synchronization.

  For example, when one clamp claw 17a swings in a direction to bring the claw T closer to the other clamp claw 17b, the other clamp claw 17b swings the claw T in a direction closer to the one clamp claw 17a. Be moved. That is, the claws T of the clamp claws 17 are moved toward the intermediate position between the pair of clamp claws 17 and the clamp claws 17 are closed. Further, when one clamp claw 17a swings the claw T in a direction away from the other clamp claw 17b, the other clamp claw 17b swings the claw T in a direction away from the one clamp claw 17a. The clamp claws 17 are opened by being moved.

The fixing device 16 drives the clamp claw 17 by the drive device 18 and clamps the anchor 19 to the clamp claw 17, thereby positioning and fixing the main carriage 11 of the transport carriage 1 at the stop position.
Specifically, when fixing the transport carriage 1 by the fixing device 16, when the anchor 19 faces the intermediate position between the pair of clamp claws 17, the clamp claws 17 are closed (the tip of the clamp claws 17. The tip of the claw T of one clamp claw 17a and the tip of the claw T of the other clamp claw 17b abut against the anchor 19 at the same time. Fixed.

On the other hand, when the protrusion 19a of the anchor 19 does not face the intermediate position between the pair of clamp claws 17, in the process of closing the clamp claws 17, the tip of one of the claws T First, it abuts against the anchor 19.
When the clamp claw 17 is further closed from this state, the carriage 1 is configured so that the intermediate portion of the pair of clamp claws 17 faces the anchor 19 by the force of closing the clamp claw 17 (driving force of the driving device 18). Is moved. Then, when the anchor 19 is sandwiched between the tips of both clamp claws 17, the transport carriage 1 is fixed.

Hereinafter, the connection structure of the transport carriage 1 will be described with reference to FIGS. 4 to 6.
As shown in FIG. 4, adjacent transport carts 1 are coupled by a cart coupling device 31.
The cart coupling device 31 includes a coupling mechanism 32 that couples adjacent conveyance carts 1 so that they can be relatively displaced, and a displacement regulating device 33 that regulates the relative displacement of the conveyance carts 1 coupled by the coupling mechanism 32. ing.

The coupling mechanism 32 includes a base portion 36 provided in each of the parent carts 11 of the adjacent carriages 1 and a coupling member 37 that connects the base portions 36 to each other.
The base 36 is provided so as to protrude to the connecting direction of the parent truck 11.
As shown in FIGS. 5 and 6, one base portion 36 a of the base portions 36 includes a pair of stoppers 38 that are spaced apart in the connecting direction of the transport carriage 1, and a transport carriage between the pair of stoppers 38. 1 and a support member 39 provided so as to be displaceable in the connecting direction.
The connecting member 37 is connected to one base portion 36a via a support member 39.
For this reason, in a state where the displacement of the support member 37 is allowed, the relative displacement of the adjacent transport carriage 1 is allowed, and by restricting the displacement of the support member 39, the relative displacement of the adjacent transport carriage 1 is restricted. Is done.

The displacement regulating device 33 includes a pressing mechanism 41 that selectively presses and fixes the support member 39 to either one of the pair of stoppers 38. In the present embodiment, the pressing mechanism 41 is configured by a hydraulic cylinder provided at a position farther from the other base 36b than the one base 36a.
In the hydraulic cylinder, a cylinder 41 a is connected to the main carriage 11, and a plunger 41 b is connected to the support member 39. The cylinder 41a is connected to the parent carriage 11 by pin coupling. As a result, the hydraulic cylinder can swing on a substantially horizontal plane with the connecting portion with the one base portion 36a as a fulcrum.

The support member 39 is provided so as to be swingable about one axis on a surface parallel to the connecting direction of the transport carriage 1 with respect to the one base portion 36a.
In the present embodiment, the support member 39 has a plate shape that is substantially rectangular in plan view. One end of the support member 39 is connected to one base portion 36a via a pin 39a in a state where the support member 39 is disposed so as to cross between the stoppers 38. Thus, the support member 39 can swing substantially on a horizontal plane within a range from the stopper 38a on the side separated from the other base portion 36b to the stopper 38b on the other base portion 36b side with the pin 39a as the swing center. Has been.

  The connecting member 37 is a substantially rod-shaped member, and one end thereof is connected to an intermediate position between one end and the other end of the support member 39 via a pin 37a. Thus, the connecting member 37 can swing relative to the support member 39 on a substantially horizontal plane with the pin 37a as the swing center. The other end of the connecting member 37 is connected to the other base portion 36b via a pin 37b. As a result, the connecting member 37 can swing relative to the other base portion 36b on a substantially horizontal plane with the pin 37b as the swing center.

The pressing mechanism 41 is configured to press a position (that is, the vicinity of the other end) of the support member 39 that is farther from the swing center of the support member 39 than the connection portion with the connecting member 37.
Thereby, the force required for the pressing mechanism 41 to fix the support member 39 is small, and the pressing mechanism 41 can be reduced in size and cost.
In the present embodiment, the plunger 41b of the hydraulic cylinder constituting the pressing mechanism 41 has its tip connected to the other end of the support member 39 via a pin 39b. Thus, by extending the hydraulic cylinder constituting the pressing mechanism 41, the support member 39 is pressed against and fixed to the stopper 38 on the other base portion 36b side, as shown by a one-dot chain line in FIG. Further, by contracting the hydraulic cylinder, as indicated by the two-dot chain line in FIG. 6, the support member 39 is secured pressed against the stopper 38 of one of the base 36a side.

At the other end of the support member 39, an elongated hole 39 c that is substantially orthogonal to the longitudinal direction of the support member 39 is formed. The elongated hole 39c is formed in an arc shape centered on the pin 39a.
The pin 39b is engaged with the elongated hole 39c so as to be movable along the elongated hole 39c. Thereby, the play of the length of the long hole 39c is ensured between the support member 39 and the plunger 41b.

As shown in FIGS. 4 and 5, the connecting member 37 has a first connecting member 42 that constitutes a side connected to one base 36a and a second connecting member 43 connected to the other base 36b. is doing.
The end of the first connecting member 42 on the other base 36b side has a hollow cylindrical shape, and the end on the one base 36a side of the second connecting member 43 is inserted into this end. Yes.
An outer flange 42a is provided at the end of the first connecting member 42 on the other base 36b side at a position spaced from the end.
An outer flange 43a is provided at an end portion of the second connecting member 43 on the one base portion 36a side at a position spaced from the end portion.

A compression coil spring 44 is provided between the outer flanges 42 a and 43 a so as to be substantially coaxial with the connecting member 37. The outer flanges 42a and 43a are substantially parallel to the connecting member 37 and are slidable with respect to the outer flanges 42a and 43a, and the guide rod 45 is inserted therethrough. At both ends of the guide rod 45, stoppers 45a for receiving the outer flanges 42a and 43a are provided.
That is, the first connecting member 42 and the second connecting member 43 can be relatively displaced along the guide rod 45 (along the longitudinal direction of the connecting member 37) within the range of the length of the guide rod 45. .

When an impact is applied to the connecting member 37 configured as described above in the direction along the longitudinal direction, the first connecting member 42 and the second connecting member 43 approach each other. Then, the compression coil spring 44 disposed between the outer flange 42 a of the first connection member 42 and the outer flange 43 a of the second connection member 43 is compressed, and the energy of this impact is absorbed by the compression coil spring 44. .
That is, the first connecting member 42, the second connecting member 43, and the compression coil spring 44 constitute an impact buffering device 46 that buffers an impact applied to the connecting mechanism 32. As a result, even if a strong force is applied between the transport carts 1 such as when the transport cart 1 suddenly stops, the transport cart 1 and the coupling mechanism 32 are not easily damaged.

Here, the installation position of the carriage coupling device 31 with respect to each carriage 1 is appropriately determined according to the track drawn by the rail track 2.
For example, when the rail track 2 depicts a meandering track, the carriage coupling device 31 is centered in the direction orthogonal to the coupling direction with respect to the respective coupling direction ends of the adjacent carriages 1. (Center part in the width direction). As a result, the adjacent carriages 1 can swing relative to each other in either the left or right direction, and can smoothly travel on the meandering rail track 2.

However, in this case, the adjacent transport cart 1 swings with the central portion in the connecting direction among the end portions in the connecting direction as a fulcrum, so when the adjacent transport cart 1 swings relatively, Of the end portions in the connecting direction of the transport carriage 1, the end portions in the swinging direction are close to each other.
Therefore, in this case, the length of the connecting member 37 is set so that the adjacent transfer carts 1 do not interfere with each other even when the adjacent transfer carts 1 are relatively swung in either direction. It is necessary to ensure enough and to keep a sufficient distance between the adjacent carriages 1.

On the other hand, when the rail track 2 depicts a track that bends in only one direction, the adjacent carriages 1 need only be able to swing relatively only in the direction in which the rail track 2 bends. The carriage connecting device 31 is preferably provided at an end portion of the connecting direction of the adjacent carriage 1 in the connecting direction at the end portion of the rail track 2 where the rail track 2 is bent.
In this case, the adjacent transport cart 1 swings around the end portion of the connecting direction in the direction in which the rail track 2 is bent, so that the adjacent transport cart 1 bends in the rail track 2. The distance between the end portions in the oscillating direction among the end portions in the connecting direction of the transport carriage 1 is kept substantially constant even when the trolley is relatively oscillated in the direction.
In other words, in this case, there is no possibility that the adjacent conveyance carriages 1 interfere with each other, so that the length of the connecting member 37 can be minimized.

In this case, even if the adjacent transport carts 1 swing relative to the direction opposite to the direction in which the rail track 2 bends, the transport carts 1 do not directly collide with each other. The contact member 47 (so-called Tyco) that receives the adjacent transport carriage 1 is disposed at the end of each connection direction of the adjacent transport carriages 1 on the side opposite to the side where the rail track 2 bends. It is preferable to provide it.
In the present embodiment, the rail track 2 has a curved portion that bends to the side opposite to the side on which the skid 4 is provided. For this reason, in this embodiment, the cart connecting device 31 is provided at an end portion on the side opposite to the side facing the skid 4 among the end portions of the adjacent transport carts 1 in the connecting direction. Further, as shown in FIGS. 2 and 4, the abutting members 47 are arranged opposite to each other on the side facing the skid 4 in the adjacent carriage 1.

The transport cart 1 connected using the cart connecting device 31 as described above is configured such that during the travel, the relative displacement between the adjacent transport carts 1 is regulated by the displacement regulating device 33, thereby During traveling, there is no difference between the speeds of the transport carts 1. That is, since these transport carts 1 are prevented from rattling during travel by the displacement regulating device 33, the adjacent transport carts 1 may collide with each other, or the transport cart 1 may contact the adjacent transport cart 1. It is not pushed or pulled, and a load is not easily applied to the carriage 1.
Further, since the wheels 14 of the transport carriage 1 are difficult to idle, the travel control of the transport carriage 1 can be performed even if the transport carriage 1 is a type of truck whose operation is controlled based on the state of rotation of the wheels 14. Can be done accurately.

  On the other hand, since the coupling mechanism 32 of the carriage coupling device 31 couples the adjacent conveyance carriages 1 so as to be relatively displaceable, in the state where the restriction of the relative displacement of the conveyance carriage 1 by the displacement regulation device 33 is released, The carriage 1 can be displaced independently. For this reason, when stopping the conveyance carriage 1, the stop position of each conveyance carriage 1 can be adjusted individually, and positioning of each conveyance carriage 1 is easy.

Here, when stopping the transporting carriages 1, the respective transporting carriages 1 are temporarily stopped, and then the restriction of the relative displacement between the transporting carriages 1 by the displacement restricting device 33 is released, and each of the transporting carriages 1 is individually The stop position may be adjusted. This positioning operation may be performed by causing each carriage 1 to be self-propelled or may be performed using the fixing device 16 described above.
Further, when stopping the transport carriage 1, immediately before stopping (that is, in a state where the transport carriage 1 is sufficiently decelerated), the restriction of the relative displacement of the transport carriage 1 by the displacement restricting device 33 is released, You may control a stop position about the conveyance trolley 1, respectively. In this case, since the position adjustment amount when positioning each conveyance carriage 1 with respect to the target stop position after the conveyance carriage 1 is stopped is small or unnecessary, the positioning operation is facilitated.

Here, in this cart coupling device 31, the interval between the transport carts 1 in a state where the relative displacement is restricted varies depending on the pressing direction of the support member 39 by the pressing mechanism 41.
Specifically, in a state where the support member 39 is pressed against the stopper 38b on the other base 36b side (that is, the adjacent transport carriage 1 side) by the pressing mechanism 41, the support member 39 is displaced to the adjacent transport cart 1 side. In this state, the relative displacement of the transfer carriage 1 is regulated in a state where the distance between the transfer carriages 1 is maximized.
On the other hand, in a state in which the support member 39 is pressed against the stopper 38a on the side separated from the other base portion 36b by the pressing mechanism 41 (that is, on the side separated from the adjacent transport carriage 1), the support carriage 39 is adjacent to the transport carriage 1 adjacent thereto. Therefore, the relative displacement of the transport carriage 1 is restricted in a state where the distance between the transport carriages 1 is minimized.

  For this reason, in the transport cart 1 connected by the cart connecting device 31, the transport carts 1 are positioned with respect to the cargo handling position so that the distance between the transport carts 1 is uniform as a whole. The relative displacement of the transporting carriage 1 is increased in a state where the distance between the adjacent transporting carriages 1 is increased on one of the adjacent carriage coupling devices 31. On the other hand, it is preferable to restrict the relative displacement of the transfer carriage 1 with the interval between the adjacent transfer carriages 1 reduced.

It is a side view which shows the structure of the trolley | bogie for conveyance with which the trolley | bogie connection structure concerning one Embodiment of this invention and its reference example is applied. It is a plane sectional view showing composition of a trolley for transportation to which a trolley connection structure concerning one embodiment of the present invention and its reference example is applied. It is a figure which shows roughly the positioning mechanism of the conveyance trolley to which the trolley | bogie connection structure concerning one Embodiment of this invention and its reference example is applied. It is a top view which shows the trolley | bogie connection structure which concerns on one Embodiment of this invention and its reference example . FIG. 5 is an enlarged view of FIG. 4. FIG. 6 is an enlarged view of FIG. 5.

DESCRIPTION OF SYMBOLS 1 Carriage for conveyance 2 Rail track 31 Carriage coupling apparatus 32 Connection mechanism 33 Displacement control apparatus 36 Base 37 Connection member 38 Stopper 39 Support member 41 Pressing mechanism 46 Shock absorbing device

Claims (4)

A truck connecting device for connecting a truck traveling on a rail track,
A coupling mechanism that couples the adjacent carts so that they can be relatively displaced;
Anda displacement restricting device for restricting the relative displacement of the carriage to be connected by the coupling mechanism,
The coupling mechanism includes a base portion provided on each of the adjacent carriages, and a coupling member that connects the base portions to each other.
The one base has a pair of stoppers provided apart in the connecting direction of the carriage, and a support member provided to be displaceable in the connecting direction of the carriage between the pair of stoppers,
The connecting member is connected to the one base via the support member,
The displacement regulating device is a cart coupling device having a pressing mechanism that selectively presses and fixes the support member to one of the pair of stoppers . The support member is provided so as to be swingable about one axis on a plane parallel to the connecting direction of the carriage with respect to the one base portion.
The pressing mechanism, the of the support member, the connecting member and the connecting portion bogie coupling device of claim 1, wherein is configured to press the position spaced apart from the pivot center of the support member than. The cart connecting device according to claim 1 or 2, wherein the connecting mechanism has an impact buffering device. Carriage coupling structure using the bogie coupling device according to any one of claims 1 to 3.

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