JP6880419B2 - Transport trolley and transport device - Google Patents

Description

The present invention relates to a transport carriage suitable as a transport means for transporting a work in a production line for assembling, processing, painting, etc., which requires accurate speed control and positioning control, and a transport device using the transport carriage.

Conventionally, a transport trolley that can be guided by a traveling rail and a chain that is guided by a guide rail provided below the traveling rail and is circulated and driven by an engaging means provided on the chain and the transport trolley are used. There is known a transport device in which a chain is engaged to pull and transport a transport carriage.

For example, Patent Document 1 discloses a transport device for towing and transporting a plurality of carriages provided so as to be movable along a free rail by a power chain. The bogie in this transport device is configured by attaching a front trolley and a rear trolley equipped with rollers that engage with free rails to the front and rear under the base. The front trolley is provided with a driving dog for towing, and the dolly is towed by the towing cam dog that is attached to the power trolley that supports the power chain and swings around the left-right axis. Be transported. On the other hand, the rear trolley is provided with an disengagement member for disengagement between the bogie and the power chain so as to extend rearward in the transport direction from the rear end surface of the base. Then, in this transport device, the disengagement member of the preceding trolley pushes down the cam dock that engages with the following trolley to release the engagement with the driving dog and stop the following trolley. It is shown.

JP-A-2009-102105

Thus, such a transport device is often installed so as to form, for example, a transport path with an uphill inclined path portion.
However, in the transport device described in Patent Document 1, for example, when forming a transport path having a steep slope path portion, the slope transition path portion curved in an arc shape from the flat path portion to the slope path portion. The radius of curvature in the vertical direction of the trolley becomes small, and the disengagement member of the trolley interferes with the power rail that guides and supports the power chain, making it difficult to smoothly transport the trolley. For this reason, the actual situation is that the inclination angle of the inclined portion in the transfer path must be reduced or the distance between the free rail and the power rail must be increased, and the transfer device itself becomes large and the installation occupied area is large. There was a problem of becoming.
Further, since the dog (driving dog) provided on the power chain is provided so as to project upward beyond the upper end surface of the power rail, in order to prevent the disengagement member from interfering with the power chain. , There is a problem that the chain dog pitch is limited.

The present invention solves the problems of the prior art as described above, that is, the object of the present invention is to enable smooth traveling even on a transport path having a steeply inclined path portion. It is an object of the present invention to provide a transport trolley capable of reducing the installation occupied area of the transport device and a transport device using the transport trolley.

The invention according to claim 1 is a transport trolley having a base and a forward traveling portion and a rear traveling portion provided on the base, and is driven by traveling of a chain. The rear traveling portion has an engaging mechanism that engages with a dog provided on the chain, and the rear traveling portion is provided so as to extend rearward from the rear end of the base. It has a release plate that disengages the engagement mechanism from the dog, and the release plate is configured so that the tip portion can move in a direction away from the chain. It is a solution.

According to the second aspect of the present invention, in addition to the configuration of the transport carriage according to the first aspect, the tip of the release plate is formed in a shape extending along the traveling line on the side of the traveling line of the chain. The above-mentioned problem is solved by adopting the above-mentioned configuration.
Further, in the invention according to the third aspect, in addition to the configuration of the transport trolley according to the first aspect, the release plate has a bifurcated tip portion and is attached to the traveling line on both sides of the traveling line of the chain. The above-mentioned problem is solved by having a structure formed in a shape extending along the line.
Furthermore, in the invention according to claim 4, in addition to the configuration of the transport trolley according to any one of claims 1 to 3, the engaging mechanism can swing vertically on the swing shaft. The problem is solved by having an engaging member that is pivotally supported and can be engaged with the dog of the chain, and the engaging member has a cam portion that comes into contact with the release plate of the preceding transport carriage. It is a thing.
Furthermore, in the invention according to claim 5, in addition to the configuration of the transport carriage according to claim 4, the engaging mechanism is pivotally supported by the swinging shaft so as to swing in the vertical direction, and the chain travels. The problem is solved by having a holding member that comes into contact with the dog on the opposite side of the engaging member with respect to the direction.

The invention according to claim 6 faces a chain that is supported and guided by a chain guide rail provided along a predetermined transport path and has a dog for traction attached at a predetermined pitch, and the chain guide rail. It is a transport device provided with a plurality of transport carts that are supported and guided by the traveling rails provided and driven by the traveling of the chain, and the transport path extends from a flat path portion to an uphill inclined path portion. The problem is solved by including the inclined transition path portion curved in an arc shape between them, and the transport carriage is the transport carriage according to any one of claims 1 to 5.

According to the transport trolley according to the first aspect of the present invention, the release plate of the transport trolley supports and guides the chain in the process of traveling on the transport route from the flat route portion to the inclined route portion of the uphill via the inclined transition route portion. By abutting on the chain guide rail, it is moved in a direction away from the chain according to the magnitude of the radius of curvature in the vertical direction of the inclined transition path portion. Therefore, it is possible to prevent the release plate from interfering with the chain guide rail, and the transport trolley can be smoothly driven. Therefore, even in a transport path having a steeply sloped inclined path portion, the radius of curvature in the vertical direction of the inclined transition path portion can be made small, and the installation occupied area of the transport device can be reduced. Specifically, if the release plate is not configured so that its tip can be moved away from the chain, the tilt transition path may be formed with a radius of curvature of at least 12000 mm. However, according to the transport trolley according to claim 1, the radius of curvature of the inclined transition path portion can be set to, for example, 2400 mm.
Further, the height pitch between the traveling rail and the chain guide rail, which are arranged along the transport path and support and guide the transport carriage, can be reduced, and the transport device can be miniaturized.

According to the second and third aspects of the present invention, it is possible to prevent the release plate of the transport carriage from interfering with the chain or the dog provided on the chain, so that there is no restriction on the chain dog pitch. , The transport efficiency can be improved.
According to the configuration according to claim 4, the structure of the transport trolley can be simplified and downsized.
According to the fifth aspect of the present invention, for example, when traveling on a downward slope inclined path portion, the pressing member abuts on the dog from the rear surface side and presses the dog from the rear in the traveling direction. Since the engaged state between the dog and the dog can be maintained, the transport trolley can be stably driven.

According to the transport device according to claim 6, by using the above-mentioned transport trolley, it is possible to stably transport the transported object and reduce the installation occupied area.

It is a side view which shows roughly a part of the structure in the example of the transfer device which concerns on this invention. It is a front view of the transport device shown in FIG. It is a front view which shows a part of the structure of the transport trolley shown in FIG. 1 in an enlarged manner. It is a rear view which shows a part of the structure of the transport trolley shown in FIG. 1 in an enlarged manner. It is a side view which shows the structure of the front traveling part in the transport carriage shown in FIG. 1 in an enlarged manner. It is a side view which shows the structure of the rear traveling part in the transport carriage shown in FIG. 1 in an enlarged manner. FIG. 6 is a cross-sectional view taken along the line AA in FIG. It is a side view which shows roughly the state which the transport carriage travels on the inclined path part in the transport path. It is an idea diagram for demonstrating the disengagement operation of an engagement mechanism and a dog. It is an idea diagram which shows the state which the engagement mechanism and a dog are disengaged.

The transport trolley of the present invention has a base, a front traveling portion and a rear traveling portion provided on the base, and is driven by traveling of the chain, and the front traveling portion is provided on the chain. It has an engaging mechanism that engages with the dog, and the rear traveling portion is provided so as to extend rearward from the rear end of the base, and the dog of the engaging mechanism of the front traveling portion of the following transport trolley is provided. As long as it has a release plate that disengages the engagement with the chain, and the tip of the release plate is configured to be movable in a direction away from the chain, what is the specific embodiment thereof? I don't care.

Further, the transport device of the present invention is supported and guided by a chain guide rail provided along a predetermined transport path, travels, and faces a chain to which a dog for towing is attached at a predetermined pitch and a chain guide rail. It is equipped with a plurality of transport trolleys that are supported and guided by the provided traveling rails, and includes a sloping transition path portion in which the transport path is curved in an arc shape from the flat path portion to the sloping path portion of the uphill slope. As long as the above-mentioned configuration is used as the above configuration, any specific embodiment thereof may be used.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in order to make the explanation easy to understand, in the drawings referred to below, the configuration is shown in a simplified or schematic manner, or some constituent members are omitted. Further, the dimensional ratio between the constituent members shown in each figure does not necessarily indicate the actual dimensional ratio.

As shown in FIGS. 1 to 4, the transport device according to an embodiment of the present invention includes a chain guide rail 101 and a traveling rail 102 arranged along a transport path including an uphill inclined path portion. There is. In the present embodiment, the traveling rail 102 is arranged so as to face the chain guide rail 101 at a position above the chain guide rail 101.
The chain guide rail 101 and the traveling rail 102 are each composed of a pair of U-shaped cross-section rails arranged with their open sides facing each other.

The chain guide rail 101 supports a chain 105 that is driven by a drive device (not shown) and guided by the chain guide rail 101. A plurality of dogs 106 for towing a transport carriage are attached to the chain 105 at regular intervals so that the tip portions of the dogs 106 for towing the chain guide rail 101 project upward from the upper end surface of the chain guide rail 101.
The traveling rail 102 supports a plurality of transport trolleys 110 that are guided and driven by the traveling rail 102 by traveling on the chain 105. The transport trolleys 110 have the same configuration as each other.

The transport trolley 110 includes a columnar base 111 extending horizontally along the traveling direction of the chain (indicated by a white arrow in FIG. 1), and a transport object support member 112 provided on the upper surface side of the base 111. The front traveling portion 120 having an engaging mechanism 125 provided on the lower surface side of the base 111 and engaging with the dog 106 of the chain 105, and the rear traveling portion 120 provided on the rear side in the chain traveling direction with respect to the front traveling portion 120. It has a part 140.

The forward traveling portion 120 rotates on a pair of side plates 121, 121 arranged so as to face each other and extend in the chain traveling direction, and a support shaft 117 extending laterally outward through the side plates 121, 121. The traveling roller 115 is freely pivotally supported and runs inside the U-shaped cross section of the traveling rail 102, and is rotatably supported by a shaft located between the opposite open sides of the traveling rail 102 and extending in the vertical direction. It is equipped with a guide roller 116. The side plate 121 is formed with a notch 122 extending upward from the lower edge.

As shown in FIG. 5, the engaging mechanism 125 has a swing shaft 126 provided so as to extend horizontally at the rear end portion between the pair of side plates 121 and 121, and swings in the vertical direction on the swing shaft 126. It has an engaging member 130 and a holding member 135 that are pivotally supported.

The engaging member 130 includes an engaging claw portion 131 that can engage with the dog 106 of the chain 105, a swing restricting portion 132 that is locked to the engaging member stopper member 127 by the weight of the engaging member 130, and both side plates. It has a cam portion 133 that protrudes outward from the outer surface of 121 and comes into contact with a release plate described later.
The engaging member stopper member 127 has, for example, a rod shape, and is provided so as to extend horizontally at the front end portion between the pair of side plates 121, 121.
The cam portion 133 has a flat cam working surface 134 that is inclined rearward and downward, and is provided so as to project outward from the outer surfaces of the side plates 121 and 121. The cam portion 133 enters the cutout portion 122 of the side plate 121 when the engaging member 130 swings upward (disengages from the dog 106).

The pressing member 135 has an engaging surface 136 that abuts on the dog 106 on the opposite side of the engaging member 130 in the chain traveling direction.
The pressing member 135 is configured to swing slightly upward to pass the dog 106 when the dog 106 approaches, and to swing downward due to its own weight to maintain a predetermined posture.

The forward traveling portion 120 includes a rod-shaped release plate stopper member 123 provided so as to project outward coaxially with the engaging member stopper member 127 on the outer surface of the side plates 121 and 121.

As shown in FIGS. 6 and 7, the rear traveling portion 140 penetrates the pair of side plates 141 and 141 arranged so as to face each other and extend in the chain traveling direction, and the side plates 141 and 141, and laterally outwards. It is located between the traveling roller 115, which is rotatably supported by the support shaft 117 extending in the direction and travels inside the traveling rail 102 in a U-shaped cross section, and the opposite open side of the traveling rail 102, in the vertical direction. A guide roller 116 rotatably supported on an extending shaft is provided.

The rear traveling portion 140 is provided so as to extend rearward from the rear end of the base 111, and is a release plate that disengages the engaging mechanism 125 of the front traveling portion 120 of the following transport trolley 110 from the dog 106. It has 145.

The release plate 145 of the present embodiment has an arm member 146 whose one end is swingably supported by a support shaft 117 and a cam portion of an engagement mechanism 125 in a subsequent transport carriage 110 provided at the other end of the arm member 146. It has a pressing member 147 that presses 133, and is configured so that the tip portion can move in a direction away from the chain 105. The arm member 146 is composed of a pair of plate-shaped members and a plate-shaped connecting member that connects the plate-shaped members. Each plate-shaped member is positioned so as to face the side plates 141 and 141 at predetermined intervals on the lateral outer side of the pair of side plates 141 and 141. Then, the pressing member 147 is fixed to the lower surface of the connecting member.

In the release plate 145 of the present embodiment, the tip of the pressing member 147 is bifurcated and formed as two branch tip portions 148 so as to extend along the chain running line L on both sides of the chain running line L. That is, the dog 106 of the chain 105 advances at a position directly below the gap of each branch tip 108 of the release plate 145.
In the present embodiment, when the engaging member 130 and the dog 106 are disengaged, the engaging member 130 of the subsequent transport trolley 110 is inserted between the branch tip portions 148 of the preceding transport trolley 110 release plate 145. .. Therefore, the release mechanism on the transport trolley 110 side, that is, the cam portion 133 can be provided at a position close to the engaging claw portion 131 of the engaging member 130, and the transport trolley 110 can be miniaturized in the vertical direction. Can be done.

Next, the operation of engaging and disengaging the engaging member 130 will be described.
When the dog 106 comes into contact with the holding member 135 of the transport trolley 110 as the chain 105 travels, the holding member 135 swings slightly upward and passes through. Then, the front surface of the dog 106 comes into contact with the engaging surface of the engaging claw portion 131, and the dog 106 and the engaging claw portion 131 engage with each other. In this state, the dog 106 advances and the dog 106 propels the engaging claw portion 131, so that the transport carriage 110 is towed and transported.

In the transport trolley 110 of the present embodiment, when traveling on the inclined path portion of the downward slope, the engaging surface 136 of the pressing member 135 engages with the rear surface of the dog 106, so that the engaged state with the dog 106 is maintained. It is possible to stably run the transport trolley 110.
On the other hand, when traveling from the flat path portion 107 to the inclined path portion 109 of the upward slope via the inclined transition path portion 108, as shown in FIG. 8, the release plate 145 has a radius of curvature in the vertical direction of the inclined transition path portion 108. The tip swings upward so as to be separated from the chain 105 according to the size. As a result, the release plate 145 is prevented from interfering with the chain guide rail 101, and the transport trolley 110 can run smoothly. When the transport trolley 110 reaches the flat path portion from the inclined path portion 109 on the uphill slope, the release plate 145 swings in the direction approaching the chain 105 due to its own weight, and the tip portion extends along the chain guide rail 101. Become.

On the other hand, the engagement of the engaging member 130 with the dog 106 is released as follows.
As shown in FIG. 9, when the following transport trolley 110b approaches the preceding transport trolley 110a in the stopped state due to the traveling of the chain 105, the engaging member 130 of the subsequent transport trolley 110b is released from the transport trolley 110a 145. Contact with. As a result, the branch tip 148 of the release plate 145 in the preceding transport trolley 110a presses the cam portion 133 of the engaging member 130 in the following transport trolley 110b, and the engaging member 130 is swung by the cam action of the cam portion 133. Let me. As a result, as shown in FIG. 9, the engaging member 130 is disengaged from the dog 106, and the release plate 145 in the preceding transport trolley 110a comes into contact with the release plate stopper member 123 of the subsequent transport trolley 110b. The following transport trolley 110b stops at.

Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and the above-described embodiment can be appropriately modified and implemented within a range that does not deviate from the gist thereof.
For example, the release plate may be moved in the vertical direction so that the tip portion can be moved in a direction away from the chain.
Further, the release plate is not limited to a structure in which the tip is bifurcated, and may be composed of two members that come into contact with each of both ends of the cam portion.

101 ・ ・ ・ Chain guide rail 102 ・ ・ ・ Running rail 105 ・ ・ ・ Chain 106 ・ ・ ・ Dog 107 ・ ・ ・ Flat path part 108 ・ ・ ・ Inclination transition path part 109 ・ ・ ・ Inclination path part 110, 110a, 110b・ ・ ・ Transport trolley 111 ・ ・ ・ Base 112 ・ ・ ・ Transport support member 115 ・ ・ ・ Traveling roller 116 ・ ・ ・ Guide roller 117 ・ ・ ・ Support shaft 120 ・ ・ ・ Forward traveling part 121 ・ ・ ・ Side plate 122・ ・ ・ Notch 123 ・ ・ ・ Release plate stopper member 125 ・ ・ ・ Engagement mechanism 126 ・ ・ ・ Swing shaft 127 ・ ・ ・ Engagement member Stopper member 130 ・ ・ ・ Engagement member 131 ・ ・ ・ Engagement Claw part 132 ・ ・ ・ Swing regulation part 133 ・ ・ ・ Cam part 134 ・ ・ ・ Cam working surface 135 ・ ・ ・ Holding member 136 ・ ・ ・ Engaging surface 140 ・ ・ ・ Rear traveling part 141 ・ ・ ・ Side plate 145 ・・ ・ Release plate 146 ・ ・ ・ Arm member 147 ・ ・ ・ Pressing member 148 ・ ・ ・ Branch tip

Claims (6)

A transport trolley having a base and a front traveling portion and a rear traveling portion provided on the base, and driven by traveling of a chain.
The forward traveling portion has an engaging mechanism that engages with a dog provided on the chain.
The rear traveling portion has a release plate provided so as to extend rearward from the rear end of the base and disengages the engagement mechanism of the front traveling portion of the following transport carriage from the dog.
The release plate is a transport trolley characterized in that the tip end portion is configured to be movable in a direction away from the chain. The carrier according to claim 1, wherein the tip end portion of the release plate is formed in a shape extending along the traveling line on the side of the traveling line of the chain. The carrier according to claim 1, wherein the release plate is formed in a shape in which the tip portion is bifurcated and extends along the traveling line on both sides of the traveling line of the chain. The engaging mechanism has an engaging member that is vertically swingably supported by a swing shaft and can be engaged with a dog of a chain.
The transport trolley according to any one of claims 1 to 3, wherein the engaging member has a cam portion that comes into contact with the release plate of the preceding transport trolley. The engagement mechanism is characterized by having a pressing member that is pivotally supported by the swinging shaft so as to be swingable in the vertical direction and abuts on the dog on the opposite side of the engaging member with respect to the traveling direction of the chain. The transport trolley according to 4. Support guidance is provided to a chain that is supported and guided by a chain guide rail provided along a predetermined transport path and has a dog for towing attached at a predetermined pitch, and a traveling rail that is provided so as to face the chain guide rail. It is a transport device equipped with a plurality of transport carts driven by running a chain.
The transport path includes a slope transition path section that is curved in an arc shape from the flat path section to the sloped path section with an uphill slope.
A transport device according to any one of claims 1 to 5, wherein the transport trolley is the transport trolley according to any one of claims 1 to 5.

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