JP2019209828A - Coupling device of conveyance carriage and conveyance carriage - Google Patents

Abstract

To provide a coupling device of a conveyance carriage, which can improve workability and safety in coupling carriages and releasing the coupled carriages.SOLUTION: A coupling device is disposed on a conveyance carriage including a carriage and an additional carriage coupled on the front or back side in a traveling direction of the carriage, and the coupling device is configured to couple the carriage and the additional carriage and release the coupled carriages. The coupling device includes a catch member disposed on the carriage; and a hook member disposed on the additional carriage. The catch member captures the hook member and thus the carriage and the additional carriage are coupled to each other. When the carriage reaches a predetermined position, the hook member captured by the catch member is released and thus the carriage coupled to the additional carriage is released.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a transport cart connecting apparatus.

  For example, in a factory or the like, a conveying cart that pulls a plurality of carts connected in series with a towing vehicle to convey components and the like is widely used (for example, see Patent Document 1).

  In Patent Document 1, in a transport cart that can pull a plurality of carts connected in series to one side and the other in a serial direction, a connecting member that couples the carts can be rotated in a horizontal direction with respect to the cart on the towing vehicle side. In addition to being connected to the tow truck side of the truck, it is fixed to the tow truck axle so that all trucks can travel on the same track as the towing truck when traveling in either direction. It is disclosed.

JP-A-2015-160454

  By the way, the connection and release of each carriage of the transport carriage are generally performed manually by an operator, and improvement in workability and safety is required.

  Therefore, an object of the present disclosure is to provide a transport cart connecting device that can improve workability and safety in the operation of connecting and disconnecting each cart.

  In order to solve the above problems, a transport cart connecting device according to the first technology disclosed herein includes a cart and an additional cart coupled to the front side or the rear side in the traveling direction of the cart. A transport cart connecting device provided on a cart, for connecting and releasing the cart and the additional cart, the catch member arranged on the cart, and the additional cart arranged on the additional cart A hook member, and the catch member captures and locks the hook member so that the cart and the additional cart are connected to each other, and when the cart reaches a predetermined position, the catch member When the hook member is unlocked by a member, the connection between the carriage and the additional carriage is released.

  According to the present technology, the catch member provided on the carriage captures and locks the hook member of the additional carriage, and includes a coupling device that automatically unlocks the hook member by the catch member at a predetermined position. Thus, the connection and disconnection work of the carriage and the additional carriage can be performed only by running the transport carriage regardless of the manual work of the operator, and the workability and safety of the work can be improved. .

  According to a second technique, in the first technique, the additional carriage is connected to a rear side in the traveling direction of the carriage, and the catch member is provided below a center of a rear end portion of the carriage. A catch member base, and a catch bar connected to the catch member base and extending forward in the horizontal direction, and the hook member is a hook member base provided below the center of the front end of the additional carriage, A hook bar extending from the hook member base; and a hook pin provided at a tip of the hook bar, and when the cart passes a side of the additional cart, a tip of the catch bar is placed on the hook pin. By engaging, the catch member captures the hook member, and the hook pin is guided to the catch bar and locked to the catch member base. By Rukoto, characterized in that said catch member and the hook member is connected.

  According to the present technology, the hook pin is guided while being engaged with the catch bar and is locked to the catch member base, whereby the connection between the carriage and the additional carriage is completed. Thus, with a simple configuration, the operation of connecting the cart and the additional cart can be performed, and the workability and safety of the operation can be improved.

  According to a third technique, in the second technique, the catch member is attached to the catch member support part that supports the catch bar so that the catch bar can rotate in the vertical direction with respect to the catch member base part. And a restricting member for restricting the movement of the catch member support portion so as to suppress the vertical movement of the catch bar, and when the carriage reaches a predetermined position, the catch by the restricting member The lock of the hook pin by the catch member base is released by releasing the restriction of the member support and rotating the catch bar in the vertical direction.

  According to the present technology, by moving the carriage to a predetermined position, the hook member is automatically unlocked by the catch member, and the additional carriage is separated from the carriage. Thus, with a simple configuration, the operation of releasing the connection between the carriage and the additional carriage can be performed, and the workability and safety of the work can be improved.

  According to a fourth technique, in the third technique, at the predetermined position, a convex portion is provided on a floor surface on which the transport carriage travels, and the restriction member of the catch member includes the floor surface. Is connected to the wheel, and when the carriage reaches the predetermined position, the wheel is guided along the surface of the convex portion, so that the position of the regulating member is offset, The restriction of the catch member support portion by the restriction member is released.

  According to the present technology, it is possible to release the connection between the carriage and the additional carriage simply by forming a convex portion on the floor surface, and to improve the workability and safety of the connection release work of both carriages. it can.

  According to a fifth technique, in the third or fourth technique, the hook bar is provided to be rotatable in a horizontal direction around the hook member base, and the hook pin is connected to the catch member by the hook member base. A hook bar restricting member that restricts horizontal movement of the hook bar in a locked state at the base, and at least a part of the catch bar is vertically lowered when the carriage reaches the predetermined position; When the hook bar is lowered, the restriction of the hook bar by the hook bar restricting member is released, and the hook bar rotates in the horizontal direction and returns to the initial position.

  According to the present technology, the hook pin locked state by the catch member base is released, the hook bar restriction by the hook bar restriction member is released, and the hook bar returns to the initial position. Then, when the carriage again passes the side of the additional carriage, the hook member can be captured again by the catch member, and the carriage and the additional carriage can be connected again.

  A transport cart according to a sixth technology disclosed herein includes the transport cart connecting device according to any one of the first to fifth technologies.

  According to the present technology, it is possible to provide a transport cart that can automatically connect and disconnect the cart and the additional cart with a simple configuration, and to improve the workability and safety of the transport cart. .

  A transport cart according to a seventh technique disclosed herein is a transport cart including a cart and an additional cart connected to a front side or a rear side in the traveling direction of the cart via a coupling device, and the connection cart The apparatus includes a catch member disposed on the carriage and a hook member disposed on the additional carriage, and the catch member captures and locks the hook member, thereby the carriage. And the additional carriage are connected to each other, and when the carriage reaches a predetermined position, the hook member is unlocked by the catch member, thereby connecting the carriage to the additional carriage. It is released.

  According to the present technology, the catch member provided on the carriage captures and locks the hook member of the additional carriage, and includes a coupling device that automatically unlocks the hook member by the catch member at a predetermined position. Thus, it is possible to provide a transport cart that can automatically connect and disconnect the cart and the additional cart with a simple configuration, and to improve the workability and safety of the transport cart.

  As described above, according to the present disclosure, the catch member provided on the carriage captures and locks the hook member of the additional carriage, and the hook member is automatically unlocked by the catch member at a predetermined position. By providing the connecting device, the operation of connecting and disconnecting the carriage with the additional carriage can be performed only by running the transport carriage regardless of the manual work of the operator, and the workability and safety of the work can be improved. Can be improved.

It is a top view which shows typically the conveyance trolley which concerns on one Embodiment. It is a top view which shows typically the rear end part of a 1st trolley | bogie. It is a top view which shows typically the front-end part of a 2nd trolley | bogie. It is a figure for demonstrating the outline of the connection mechanism of a 1st trolley | bogie and a 2nd trolley | bogie. It is a figure for demonstrating the outline of the connection cancellation | release mechanism of a 1st trolley | bogie and a 2nd trolley | bogie. It is a figure which expands and shows the catch member base part of a catch member. It is a left view which shows typically the rear end part lower part of the 1st bogie. It is a figure for demonstrating operation | movement of a catch member when a 1st trolley | bogie reaches | attains a convex-shaped part. It is a figure for demonstrating a motion of a control member and a catch member support part when a 1st trolley reaches | attains a convex-shaped part. It is a right view of a hook member. It is a figure for demonstrating the cancellation | release mechanism of the center lock state of a hook bar. It is a figure for demonstrating a hook bar unlocking operation | movement. It is a top view which shows the hook member base in the center lock state of a hook bar. It is a left view of the hook member base of FIG. It is a top view which shows the hook member base in hook bar unlocking operation | movement. It is a left view of the hook member base of FIG. It is a top view which shows typically the conveyance trolley | bogie which concerns on other embodiment. It is a top view which shows typically the conveyance trolley | bogie which concerns on other embodiment.

  Hereinafter, embodiments of the present disclosure will be described in detail based on the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the present disclosure, its application, or its application.

(Embodiment 1)
<Transport cart>
As shown in FIG. 1, the transport cart 1 according to the present embodiment includes a tow vehicle 11, a first cart 12 (cart), a second cart 13 </ b> A (cart, additional cart), and a third cart 13 </ b> B (cart). , And additional carts). In addition, since the 2nd trolley | bogie 13A and the 3rd trolley | bogie 13B are the same structures, description of the 3rd trolley | bogie 13B is abbreviate | omitted below. Further, the transport cart 1 may be configured such that the third cart 13B is not connected, or one or more same carts as the second cart 13A are further connected to the rear side of the third cart 13B. There may be.

≪Direction≫
The traveling direction of the transport carriage 1 is the direction indicated by the black arrow in FIG. In this specification, as shown in FIG. 1, the direction is based on the traveling direction of the transport carriage 1, the traveling direction is “front side”, the opposite side to the traveling direction is “rear side”, and the right side of the paper surface of FIG. “Right side”, the left side of the page as “left side”, the front side of the page as “upper side”, and the back side of the page as “lower side”. The “left-right direction” may be referred to as “horizontal direction”.

≪Towing vehicle≫
The towing vehicle 11 is for towing the transport carriage 1 in the traveling direction, and travels electrically, for example.

≪First car≫
The first carriage 12 is for carrying a load such as a heavy load. The 1st trolley | bogie 12 is connected with the rear side of the towing vehicle 11 in series via the connection part 11a, for example.

  As shown in FIG. 2, the first carriage 12 includes a loading platform 124 on which a load is placed, and a pair of left and right front wheels (not shown) disposed below the loading platform 124 and on the front end side of the first carriage. ), And a pair of left and right rear wheels 121, 121 disposed on the lower side of the loading platform and on the rear end portion side of the first carriage.

  As the tow truck 11 moves, the front wheels and the rear wheels 121 and 121 rotate in the first bogie 12 and are pulled by the tow truck 11 to travel on the floor surface of the transport path in the traveling direction.

  As shown in FIGS. 1 and 2, a catch member 21 of the coupling device 2 according to the present embodiment is disposed at the rear end portion of the first carriage 12. As shown in FIGS. 1 and 2, a catch member base 211 provided at the center of the rear end of the first carriage 12, and a substantially C-shape that is connected to the catch member base 211 and extends forward in both horizontal directions. And a catch bar 212. Details including the remaining configuration of the catch member 21 will be described later.

≪Second car≫
Similar to the first carriage 12, the second carriage 13A is for carrying a load such as a heavy load. The second carriage 13A is connected to the rear side in the traveling direction of the first carriage 12 via the connecting device 2 according to the present embodiment.

  As shown in FIG. 3, the second carriage 13A includes a loading platform 134 on which a load is placed, and a pair of left and right front wheels 132 and 132 disposed on the lower side of the loading platform 134 and on the front end side of the second carriage. And a pair of left and right rear wheels (not shown) disposed below the loading platform 134 and on the rear end side of the second carriage.

  In the second cart 13A, the front wheels 132 and 132 and the rear wheels rotate as the tow vehicle 11 and the first cart 12 move, and are pulled by the tow vehicle 11 to travel on the floor surface of the conveyance path in the traveling direction.

  As shown in FIGS. 1 and 3, a hook member 31 of the coupling device 2 is disposed at the front end portion of the second carriage 13A. The hook member 31 is a rod-shaped member extending from the front end portion of the loading platform 134 of the second carriage 13A, and a hook pin 303 is disposed at the tip thereof. As shown in FIG. 1, when the hook pin 303 of the hook member 31 is engaged with the catch bar 212 of the catch member 21, the first carriage 12 and the second carriage 13A are connected. Details including the remaining configuration of the hook member 31 will be described later.

<Connecting device>
As shown in FIG. 1, the transport carriage 1 according to this embodiment includes a connecting device 2. Hereinafter, the configuration of the coupling device 2 will be described in detail.

  The connecting device 2 is for connecting and releasing the first carriage 12 and the second carriage 13A, and includes a catch member 21 disposed at a rear end portion of the first carriage 12 and the second carriage 13A. And a hook member 31 disposed at the front end.

  Hereinafter, with reference to FIG. 1, FIG. 4, FIG. 5, the outline of the connection mechanism and connection release mechanism of the 1st trolley | bogie 12 and the 2nd trolley | bogie 13A is demonstrated.

≪Mechanism for connecting the first and second carts≫
As shown in the diagram on the left side of FIG. 4, the first carriage 12 advances in the direction of arrow F as the towing vehicle 11 is pulled. Then, when the first cart 12 passes the side of the second cart 13 </ b> A, the tip of the catch bar 212 is engaged with the hook pin 303, whereby the hook member 31 is captured by the catch member 21. 4, the hook pin 303 is guided by the catch bar 212 and slides to the center of the catch bar 212 in the left-right direction. Then, as shown in FIG. 1, the hook pin 303 is locked by the catch member base 211 at the center of the catch bar 212 (a hook pin lock state described later). As will be described in detail later, as the hook pin lock state is achieved, the hook member 31 enters the center lock state in order to maintain a stable connected state. In this way, the catch member 21 and the hook member 31 are connected.

≪Mechanism for disconnecting first and second carts≫
When the first carriage 12 of the transport carriage 1 in the connected state shown in FIG. 1 reaches a predetermined position, the rear end of the catch bar 212, that is, the center ( At least a part of the catch bar is lowered downward in the vertical direction. Then, the lock of the hook pin 303 by the catch bar 212 is released (hook pin unlocking operation described later). After that, the hook member 31 is rotated in the horizontal direction and automatically stored in the initial position of the hook member 31 (described later) as shown by the arrow V2 in the left side of FIG. 5 and the right side in FIG. To unlock the hook bar). In this way, the lock of the hook member 31 by the catch member 21 is released, so that the connection between the first carriage 12 and the second carriage 13A is released.

≪Catch material≫
−Configuration−
The configuration of the catch member 21 will be described with reference to FIGS. 2 and 6 to 9.

  As described above, the catch member 21 includes the catch member base 211 and the catch bar 212. As shown in FIGS. 2 and 7, the catch member base 211 is provided below the center of the rear end of the first carriage 12. Further, the catch bar 212 is connected to the catch member base 211 and is provided so as to extend from the center line L12 of the first carriage 12 forward in the horizontal direction. In front of the catch bar 212, a pair of left and right side bars 213 and 213 arranged in parallel with being spaced apart from the catch bar 212 are disposed.

  The catch member base 211 supports the catch bar 212 and locks the hook pin 303 of the hook member 31 to hold the connected state. As shown in FIGS. 2 and 6, the catch member base 211 is provided at a catch member base main body 211a connected to the lower center of the rear end of the first carriage 12 and a rear end of the catch member base main body 211a. A pair of left and right claws 201 is provided. The claw portions 201 and 201 include claw portion base end portions 201b and 201b and claw portion front end portions 201c and 201c. The claw portions 201 and 201 are fixed to the catch member base body 211a by a pair of left and right jigs 201a and 201a so as to be rotatable toward the center in the left and right direction in a plane parallel to the paper surface of FIG. . Regarding the right claw 201, the claw base end 201b is formed to extend substantially leftward from the position where the jig 201a is arranged, and the claw tip 201c is arranged with the jig 201a. It is formed so as to extend backward from the formed position. The left claw portion 201 is symmetrical to the right claw portion 201. Further, the claw base end portions 201b and 201b of the pair of left and right claw portions 201 and 201 are connected to each other by a first spring member 202 fixed to the claw base end portions 201b and 201b by fixtures 201d and 201d. Yes.

  2 and 7, the catch member 21 includes a pair of left and right first connection portions 204A and 204A extending downward from the catch bar 212 and a pair of left and right second connections extending downward from the side bars 213 and 213. A pair of left and right support bars 205, 205 connected to the catch bar 212 and the side bars 213, 213 via the connection portions 204B, 204B, the first connection portions 204A, 204A and the second connection portions 204B, 204B and extending in the front-rear direction. With. The catch member 21 includes a support shaft 209 (catch member support portion) that supports the support bars 205 and 205 so as to be rotatable in the vertical direction with respect to the catch member base portion 211, and a pair of left and right attached to the support shaft 209. The locking members 210 and 210 include a pair of left and right locking surfaces 210A and 210A provided on the locking members 210 and 210, respectively. As will be described later, the support shaft 209 can rotate about the axis 209A. Further, the catch member 21 extends to a pair of left and right restricting members 215 and 215 that restrict the rotation of the support shaft 209 around the axis 209A and the restricting members 215 and 215 by being locked to the locking surfaces 210A and 210A. The pair of left and right connecting arms 208 and 208, the support bars 205 and 205, and the connecting arms 208 and 208 are fixed to the pair of left and right first fixing tools 214A and 214A and second fixing tools 214B and 214B, respectively. Two spring members 214 and 214. The catch member 21 is provided on the distal end side of the connecting arms 208 and 208, and a pair of left and right wheels 216 and 216 that rotate while contacting the floor G and a pair of left and right wheels extended to the support bars 205 and 205. A third connecting portion 206, 206 and a pair of left and right stoppers 207, 207 attached to the third connecting portion 206, 206 are provided. Of the pair of left and right members described above, the locking surfaces 210A and 210A, the regulating members 215 and 215, the connecting arms 208 and 208, the first fixing tools 214A and 214A, the second fixing tools 214B and 214B, and the second spring member 214, 214, wheels 216, 216, third connecting portions 206, 206, and stoppers 207, 207 are not shown in FIG. 2, and only the left side member is shown in FIG.

  The support shaft 209 is a rod-like member that is inserted into an insertion hole (not shown) provided in the catch member base 211 and extends in the left-right direction symmetrically about the catch member base 211. The support shaft 209 is configured to be rotatable around its axis 209A perpendicular to the paper surface of FIG. 7 (arrow Q1 in FIG. 7). The support bars 205 and 205 are fixed to the left and right ends of the support shaft 209, and rotate in the vertical direction as the support shaft 209 rotates (arrow Q2). As the support bars 205 and 205 rotate, the catch bar 212 and the side bars 213 and 213 also rotate in the vertical direction (arrow Q3). 7 and FIG. 9, when the hook member 303 is not unlocked by the catch member 21, the restricting member 215 comes into contact with the locking surface 210 </ b> A of the locking member 210 as shown in FIGS. 7 and 9. The rotation of the support shaft 209 around the axis 209A is suppressed. Thus, the rotation of the support bars 205, 205, the catch bar 212, and the side bars 213, 213 is also suppressed.

-Hook pin catching mechanism with catch member-
With reference to FIG.2 and FIG.4, the capture mechanism of the hook pin 303 by the catch member 21 is demonstrated.

  As shown in FIG. 2, between the catch bar ends 212A and 212A on both sides of the catch bar 212 of the catch member 21 and the side bar ends 213A and 213A on both sides of the side bars 213 and 213, There are gaps 212B and 212B associated with the gap between the catch bar 212 and the side bars 213 and 213. The catch bar end portions 212 </ b> A and 212 </ b> A of the catch bar 212 extend so as to protrude from both left and right ends of the loading platform 124. Then, for example, as shown in FIG. 4, when the first carriage 12 passes the left side of the second carriage 13 </ b> A, the right catch bar end 212 </ b> A is engaged with the hook pin 303. Then, the hook pin 303 is taken into the gap between the catch bar 212 and the right side bar 213 from the right gap 212B, and the catch of the hook pin 303 by the catch bar 212 is completed.

  As indicated by phantom lines in FIG. 2, curved portions 212C and 212C may extend from the catch bar end portions 212A and 212A. When the bending portions 212C and 212C are extended, the hook pin 303 is taken in from the gap between the bending portions 212C and 212C and the loading platform 124. By extending the curved portions 212C and 212C, deviation of the hook pin 303 when the hook pin 303 is hooked by the catch bar 212 can be suppressed. Since the curved portions 212C and 212C are extended, the positioning of the first carriage 12 tends to be difficult when the hook pin 303 is engaged by the catch bar 212. Therefore, the positioning of the first carriage 12 is easy. From the viewpoint, it is desirable not to extend the bending portions 212C and 212C.

-Hook pin locking mechanism with catch member (hook pin locked state)-
With reference to FIG. 6, the locking mechanism of the hook pin 303 by the catch member base 211 will be described.

  The hook pin 303 is locked in the vicinity of the center of the catch bar 212 by being taken in between the pair of left and right claws 201, 201.

  First, the claw portions 201 and 201 are arranged at a lock position denoted by reference numeral 201K except when the hook pin 303 is taken in. Specifically, the claw portions 201 and 201 are urged by the first spring member 202 so that the first spring member 202 is contracted, that is, the claw portion tip portions 201c and 201c are rotated in the left-right direction. Has been. At the lock position 201K, the claw tip end portions 201c and 201c are restricted from being opened further to the left and right sides while being in contact with the catch bar 212 and the side bar 213.

  Then, as shown by an imaginary line in FIG. 6, for example, a state where the hook pin 303 is taken in between the catch bar 212 and the side bar 213 from the right side is considered. Then, the hook pin 303 is guided by the gap between the catch bar 212 and the side bar 213, and moves from the front right side to the rear left side as indicated by the arrow P1 between the catch bar 212 and the side bar 213. The hook pin 303 contacts the right side surface of the claw tip end portion 201c of the right claw portion 201 disposed at the initial position indicated by reference numeral 201K. When the hook pin 303 comes into contact with the right side surface of the claw tip 201c, the impact force acts on the claw 201, and the claw 201 rotates to the left about the jig 201a and is taken in by reference numeral 201K '. Move to position. Then, a gap is generated between the claw portion tip 201c and the catch bar 212, and the hook pin 303 moves between the catch bar 212 and the holding portion 203 as indicated by an arrow P2. When the hook pin 303 moves between the catch bar 212 and the holding portion 203, the claw portion 201 returns to the locked position 201K by the urging force of the first spring member 202. When the claw portion 201 returns to the lock position 201K, the claw portion tip portion 201c is regulated by the catch bar 212 and the side bar 213 so as not to open to the right side of the lock position 201K. Between the claw portions 201 and 201 and between the holding portion 203 and the catch bar 212 in a loose state. Thus, the hook member 31 is locked by the catch member 21 (hook pin locked state).

−Hook pin unlocking mechanism with catch member (hook pin unlocking operation) −
Next, the unlocking operation of the hook pin 303 by the catch member 21 will be described with reference to FIGS. 2, 5, and 7 to 9.

  As shown in the upper left diagram of FIG. 8, a convex portion 41 for releasing the connection is provided at a predetermined position on the floor G on which the transport carriage 1 travels. When the wheel 216 of the first carriage 12 reaches the position (predetermined position) where the convex portion 41 is provided, the wheel 216 moves along the slope of the convex portion 41 as shown in the upper right diagram of FIG. Guided and ascended. Then, as the wheel 216 rises, the tip of the connecting arm 208 rises (arrow R1), and the connecting arm 208 is pulled. Then, the connecting arm 208 descends in a direction in which the first fixing tool 214A and the second fixing tool 214B are separated (arrow R2), and the second spring member 214 is extended, and the base end side of the connecting arm 208 The regulating member 215 is pulled. Then, as shown in the upper left, upper right, and lower left diagrams of FIG. 9, the position of the regulating member 215 is offset, and the regulating member 215 is detached from the locking surface 210A.

  On the other hand, when the wheel 216 is guided and raised by the slope of the convex portion 41, the stopper 207 contacts the connecting arm 208. Then, when the wheel 216 reaches the top surface of the convex portion 41, the restriction of the locking member 210 by the restriction member 215 is released as described above, so the arrow R3 in the lower left diagram of FIG. 9, the support shaft 209 rotates downward about the shaft center 209 </ b> A as indicated by an arrow R <b> 5 in the lower left diagram of FIG. 9. Then, as the wheel 216 rises, the support bars 205 and 205, the catch bar 212, and the side bars 213 and 213 rotate downward about the axis 209A (arrow R4). Then, as shown in FIG. 5, the lock of the hook pin 303 by the catch member base 211 is released (hook pin unlocking operation).

  Thereafter, as shown in the lower right diagram of FIG. 8, when the wheel 216 passes through the convex portion 41, the height of the wheel 216 returns to the height of the floor surface G. Then, as shown in the lower right diagram of FIG. 9, the connecting arm 208 moves in a direction in which the first fixing tool 214 </ b> A and the second fixing tool 214 </ b> B approach due to the biasing force of the extended second spring member 214. . At the same time, the support shaft 209 rotates upward about the axis 209A (arrow R6), and the support bars 205 and 205, the catch bar 212, and the side bars 213 and 213 also rotate upward as the support shaft 209 rotates. To do. Then, the regulating member 215 comes into contact with the locking surface 210A of the locking member 210, rotates around the axis 209A of the support shaft 209, and rotates the support bars 205 and 205, the catch bar 212, and the side bars 213 and 213. Is suppressed again.

≪Hook member≫
−Configuration−
The configuration of the hook member 31 will be described with reference to FIGS. 3, 5, and 10 to 16.

  As shown in FIGS. 3, 5, and 10, the hook member 31 includes a hook member base 301 that is connected to the lower center of the front end of the second carriage 13 </ b> A via a hook member connection portion 304, and a hook member base 301. And a hook bar 302 provided so as to be pivotable in the horizontal direction around the hook member base 301.

  As shown in FIGS. 10, 13, and 14, the hook member base 301 is laminated and fixed on the plate-like hook member base body 312A connected to the loading platform 134 of the second carriage 13A and the upper side of the hook member base body 312A. Plate-shaped fixing plate 312B. The hook member base main body 312A and the fixing plate 312B are formed with two through holes (not shown) having the same diameter centered on the axis L31. The hook member base 301 is inserted into the two through holes, and includes a hook member support shaft 309 that can rotate in the horizontal direction around the axis L31 with respect to the hook member base main body 312A and the fixed plate 312B. ing. The proximal end side of the hook bar 302 is fixed to the hook member support shaft 309 and is configured to be rotatable in the horizontal direction as the hook member support shaft 309 rotates in the horizontal direction.

  As shown in FIGS. 10 and 14, a hook bar restricting member 311 is disposed on the upper side of the fixing plate 312B. The hook bar restricting member 311 has a pair of left and right hook bar restricting member support portions 311C and 311C projecting above the fixing plate 312B and two through holes (not shown) formed in the hook bar restricting member support portions 311C and 311C. A bar-shaped hook bar restricting member support shaft 311B that is inserted and extends in the horizontal direction is provided. The hook bar restricting member support shaft 311B can rotate around its axis. The hook bar restriction member 311 has a hook bar restriction member main body 311D that is pivotally supported by the hook bar restriction member support shaft 311B so as to be pivotable in the vertical direction with respect to the hook bar restriction member support portions 311C and 311C.

  The hook bar restricting member main body 311D includes a hook bar restricting member bar 322 extending in the left-right direction, a pair of left and right extending bars 323 and 323 extending from the left and right ends of the hook bar restricting member bar 322, and a pair of left and right extending members. A pair of left and right restricting portion main bodies 311A and 311A extending downward from the front ends of the installation bars 323 and 323 are provided. The pair of left and right extending bars 323 and 323 and the fixing plate 312B are respectively a pair of left and right extending bar fixing portions 314A and 314A and a pair of left and right fixing plate fixing portions 314B and 314B. The third spring members 314 and 314 are connected.

  A protruding portion 324 protrudes at the center in the left-right direction of the hook bar restricting member bar 322 so as to extend in the forward direction. A rectangular plate-shaped receiving portion 313 that is slightly inclined so as to rise from the front side toward the rear side is disposed at the tip of the protruding portion 324.

  A semi-disc-shaped cam member 310 attached to the hook member support shaft 309 is disposed between the fixed plate 312B and the extended bars 323 and 323 of the hook bar regulating member main body 311D.

  As shown in FIGS. 3 and 12, the hook member support shaft 309 is provided with a stay 308 extending from the hook member support shaft 309 to the left rear side by about 45 ° with respect to the longitudinal direction of the hook bar 302. The tip of the stay 308 and the hook member connecting portion 304 are connected via a fourth spring member 305 having both ends connected at the stay fixing portion 306 and the hook member connecting portion fixing portion 307. The angle formed by the stay 308 and the longitudinal direction of the hook bar 302 is not limited to about 45 °, and can be changed as appropriate according to the required specifications.

  As shown in FIG. 10, the hook bar 302 includes a hook bar main body 302A whose base end side is fixed to the hook member support shaft 309, and a hook bar front end portion 302B having an L-shape in side view extending from the front end of the hook bar main body 302A. I have. The hook pin 303 extends downward at the tip of the hook bar tip 302B. The hook bar front end portion 302B and the hook pin 303 are disposed so as to form a substantially U shape with the lower side opened as a whole, and the hook bar main body 302A, the hook bar front end portion 302B and the hook pin 303 as a whole have a hook shape. Yes.

  As shown in FIGS. 3 and 10, a connecting rod 315 is disposed on the upper side of the hook bar main body 302A so as to extend in the front-rear direction. The connecting rod 315 is provided with a connecting rod support portion 315D that protrudes upward on the upper side of the hook bar main body 302A and near the hook member base portion 301 in the middle in the front-rear direction. The connecting rod 315 is connected to the connecting rod support portion 315D and the hook bar tip portion 302B by the first connecting rod support shaft 331 and the second connecting rod support shaft 332 on the proximal end side of the connecting rod support portion 315D and the hook bar tip portion 302B, respectively. On the other hand, it is pivotally supported so as to be rotatable in the vertical direction.

  The connecting rod 315 includes a substantially L-shaped first segment 338 extending in the front-rear direction, a rod-shaped second segment 336 extending in the front-rear direction, and a rod-shaped third segment 337 extending in the front-rear direction. The first segment 338 and the second segment 336 are connected via a first joint member 333, and the second segment 336 and the third segment 337 are connected via a second joint member 334. A lever 315 </ b> B is disposed at the tip of the first segment 338 so as to be close to the hook pin 303. A catch portion 321 into which the catch bar 212 of the catch member 21 is inserted is formed by the hook pin 303, the hook bar tip portion 302B, and the lever 315B.

  The first segment 338 is in contact with the hook bar main body 302A at the contact portion 315A. Thus, the lever 315B is positioned.

  The third segment 337 includes a roller 315 </ b> C that is supported by a roller support shaft 335 at a tip opposite to the second joint member 334, which is a connection portion with the second segment 336. The roller 315C is disposed so as to be close to the upper surface of the receiving portion 313.

  As shown in FIGS. 3 and 4, when the first carriage 12 and the second carriage 13 </ b> A are in the disconnected state, the hook bar 302 of the second carriage 13 </ b> A is stored in the initial position indicated by reference numeral 302 </ b> K ′. . As shown in FIG. 3, the initial position 302K ′ of the hook bar 302 is a position extending in the left-right direction so that the hook pin 303 protrudes leftward from the left end of the loading platform 134 of the second carriage 13A. On the other hand, when the first carriage 12 and the second carriage 13A are in the coupled state, the hook bar 302 is disposed at the coupling position indicated by reference numeral 302K. The connection position 302K of the hook bar 302 is a position where the hook bar 302 extends in parallel in the front-rear direction.

-Hook member center lock mechanism (center lock state)-
When the hook bar 302 is in the coupling position 302K (see FIG. 3), the hook member base 301 is in the state shown in FIGS. That is, the restricting portion main bodies 311A and 311A are in contact with the surface of the fixed plate 312B. In this state, when the hook member support shaft 309 tries to rotate around the axis L31, the restriction surfaces 310A and 310A of the cam member 310 are hooked on the restriction portion main bodies 311A and 311A. The rotation around the axis L31 is regulated. Then, the movement of the hook bar 302 in the horizontal direction is restricted by the restriction portion main bodies 311A and 311A. In other words, the hook bar 302 is locked at the coupling position 302K by the restriction portion main bodies 311A and 311A (center). Locked).

  As shown in FIG. 3, in the state where the hook bar 302 is at the initial position 302K ′, the relationship between the hook bar 302, the restriction portion main bodies 311A and 311A, and the fixing plate 312B is almost similar to the state shown in FIGS. Therefore, in a series of processes from the catch of the hook pin 303 by the catch bar 212 to the hook pin locked state shown in FIG. 4, the restriction body 311A, 311A is shown in FIG. 16 as the hook bar 302 rotates in the horizontal direction. From the state, the state shown in FIG. 14 is reached, and the center lock state of the hook bar is achieved almost simultaneously with the achievement of the hook pin lock state.

  As described above, both the hook pin lock state in which the hook pin 303 is locked by the catch member base 211 and the center lock state in which the hook bar 302 is locked at the coupling position 302K by the restriction portion main bodies 311A and 311A are achieved. The carriage 12 and the second carriage 13A are connected. With this configuration, the connection between the first carriage 12 and the second carriage 13A is ensured, and the connection state can be maintained and the safety can be enhanced even during the traveling of the transport carriage 1.

− Automatic hook member storage mechanism (hook bar unlocking operation) −
In the hook pin lock state described above, the catch bar 212 is loosely inserted into the catch portion 321 as shown in FIG.

  As shown in FIG. 8, when the first carriage 12 reaches the position where the convex portion 41 is formed, the catch bar 212 descends downward, and the hook pin 303 is unlocked by the catch member base 211. At this time, as shown in FIG. 11, with the lowering of the catch bar 212 indicated by the arrow U1, the central portion in the left-right direction of the catch bar 212 pushes down the lever 315B in the direction of the arrow U2. Then, the contact portion 315A rises in the arrow U3 direction, and the second segment 336 is pulled in the arrow U4 direction. Then, the second joint member 334 side of the third segment 337 is pulled in the direction of the arrow U5. As the first connecting rod support shaft 331 rotates, the distal end side of the third segment 337 descends in the direction of arrow U6. Then, the roller 315C provided at the tip of the third segment 337 descends in the direction of arrow U6, and pushes the receiving portion 313 in the direction of arrow U7. When the receiving part 313 moves in the arrow U7 direction, the restricting part main bodies 311A and 311A rise in the arrow U8 direction as the hook bar restricting member support shaft 311B rotates.

  Then, as shown in FIGS. 15 and 16, the restriction of the restriction surfaces 310A and 310A of the cam member 310 by the restriction body 311A and 311A is released, and the hook member support shaft 309 can be rotated around the axis L31. The hook bar 302 can be rotated in the horizontal direction.

  On the other hand, as shown in FIGS. 3 and 12, a stay 308 is attached to the hook member support shaft 309. The stay 308 is connected to the hook member connecting portion 304 via the fourth spring member 305. When rotation about the axis L31 of the hook member support shaft 309 is enabled, the hook member connecting portion 304 side of the stay 308 moves in the arrow V1 direction by the urging force of the fourth spring member 305. Then, the hook member support shaft 309 rotates around the axis L31, and the hook bar 302 rotates leftward as indicated by the arrow V2, and eventually returns to the initial position 302K '. As described above, when the catch bar 212 is lowered in the hook pin unlocking operation, the restriction of the hook bar 302 by the restricting portion main bodies 311A and 311A is released, and the hook bar 302 is automatically stored in the initial position 302K ′ (hook bar unlocking operation).

  As described above, both the hook pin unlocking operation described above and the hook bar unlocking operation generated by using the hook pin unlocking operation as a trigger are achieved, and the first cart 12 and the second cart 13A are disconnected. Achieved. According to this configuration, since the hook bar 302 of the second carriage 13A is automatically housed along with the hook pin unlocking operation, the first carriage 12 passes the side of the second carriage 13A again, so that the first The trolley 12 and the second trolley 13A can be connected again, and the first trolley 12 and the second trolley 13A can be easily connected and disconnected repeatedly.

<Effect>
As described above, in the transport carriage 1 according to the present embodiment, the catch member 21 provided in the first carriage 12 captures and locks the hook member 31 of the second carriage 13A, and the catch portion 41 has a catch member. 21 is provided with a coupling device 2 that automatically releases the lock of the hook member 31 by 21. According to this configuration, the connection and disconnection work between the first carriage 12 and the second carriage 13A can be performed only by running the transport carriage 1 regardless of the manual work of the operator. The conveyance cart 1 which can be automatically performed by a structure can be brought about, and the workability | operativity and safety | security of the conveyance cart 1 can be improved.

(Embodiment 2)
Hereinafter, other embodiments according to the present disclosure will be described in detail. In the description of these embodiments, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the above embodiment, for example, as shown in FIG. 3, the hook bar 302 rotates to the left, and the hook member 31 is automatically stored in the left initial position 302K ′. As shown in FIG. The configuration is such that the hook pin 303 is captured from the catch bar end portion 212A on the right side of the catch bar 212 when the one cart 12 passes the left side of the second cart 13A. On the other hand, the initial position 302K ′ of the hook bar 302 is not limited to the left side, but may be the right side. Specifically, for example, as shown in FIG. 3, the direction of the stay 308 projecting from the hook member support shaft 309 extends rearward from the hook member support shaft 309 to the right by about 45 ° with respect to the longitudinal direction of the hook bar 302. The hook bar 302 is rotated to the right side by changing the arrangement of the fourth spring member 305 by disposing the hook member connection portion fixing portion 307 at the position of reference numeral 307B and changing the arrangement of the fourth spring member 305. The member 31 may be automatically stored in the right initial position. In this case, the initial position 302K ′ of the hook bar 302 is a position that extends in the left-right direction so that the hook pin 303 protrudes rightward from the right end of the loading platform 134 of the second carriage 13A. Then, when the first carriage 12 passes the right side of the second carriage 13A, the hook pin 303 is captured by the catch bar end 212A on the left side of the catch bar 212, and the hook pin 303 is taken in from the left gap 212B. (See FIG. 2).

(Embodiment 3)
In the above embodiment, the second carriage 13A as an additional carriage is connected to the front side in the traveling direction of the first carriage 12, but for example, as shown in FIG. 17, the second carriage as an additional carriage. 13A can also be connected to the front side in the traveling direction of the third carriage 13B as a carriage. That is, the catch member 21 may be provided at the front end portion of the third carriage 13B, and the hook member 31 may be provided at the rear end portion of the second carriage 13A. In this case, when the second carriage 13A passes the side of the third carriage 13B, the hook member 31 is engaged with the catch bar 212 of the catch member 21, and the hook member 31 and the catch member 21 are connected. Become.

(Embodiment 4)
Moreover, in the said embodiment, although it was the structure which has arrange | positioned the convex part 41 in the predetermined position on the floor G, the structure arrange | positioned in a predetermined position is not restricted to the convex part 41, Any configuration that can trigger a hook pin unlocking operation can be adopted.

  Specifically, for example, as shown in FIG. 18, the convex portion 41 may be a concave portion 42. In this case, by providing the hook pin 303 so as to extend upward at the tip of the hook member 31, when the wheel 216 is guided by the surface of the concave portion 42 and descends, the catch bar 212 is moved in the direction of the arrow V3. The hook pin unlocking operation can be performed. Although not shown, a configuration in which the catch member 21 as a whole descends or rises with an electrical signal as a trigger at a predetermined position may be employed.

(Other embodiments)
Configurations other than the coupling device 2 in the towing vehicle 11, the first cart 12 and the second cart 13A, for example, the number of wheels and the shape of the loading platform, are not limited to the above configuration, and the transport object or the transport cart 1 It can be changed as appropriate according to the specifications of the factory or the like where it is used.

  Further, the connecting device 2 may be employed for the connection between the towing vehicle 11 and the first carriage 12.

  In the above-described embodiment, the pair of left and right claws 201 and 201 is provided on the catch member base 211, but depending on the direction of the hook pin 303 in the catch member 21, Only one of them may be provided.

  Moreover, in the catch member 21, the holding | suppressing part 203 does not need to be provided.

  Further, the configuration of the connecting rod 315 is not limited to the configuration of the above embodiment, and any configuration may be adopted as long as the roller 315C pushes down the receiving portion 313 using a hook pin unlocking operation as a trigger.

  The present disclosure is extremely useful because it can provide a transport cart connecting device that can improve workability and safety in connecting and disconnecting each cart.

1 Carriage Cart 2 Coupling Device 12 First Car (Car)
13A 2nd dolly (trolley, additional dolly)
13B 3rd dolly (trolley, additional dolly)
21 Catch member 301 Hook member base 31 Hook member 209 Support shaft (catch member support)
211 Catch member base 212 Catch bar 215 Restriction member 216 Wheel 302 Hook bar 303 Hook pin 311 Hook bar restriction member G Floor 41 Convex part (predetermined position)
302K 'initial position (of hook bar)

Claims (7)

A transport cart connecting device for connecting and disconnecting the cart and the additional cart, which is provided in a transport cart including a cart and an additional cart connected to the front side or the rear side in the traveling direction of the cart. Because
A catch member disposed on the carriage;
A hook member disposed on the additional carriage,
When the catch member captures and locks the hook member, the carriage and the additional carriage are connected to each other;
When the carriage reaches a predetermined position, the hook member is unlocked by the catch member, so that the connection between the carriage and the additional carriage is released. Connecting device. In claim 1,
The additional carriage is connected to the rear side in the traveling direction of the carriage,
The catch member is
A catch member base provided below the center of the rear end of the carriage;
A catch bar connected to the catch member base and extending forward in the horizontal direction on both sides;
The hook member is
A hook member base provided at the lower center of the front end of the additional carriage;
A hook bar extending from the hook member base;
A hook pin provided at the tip of the hook bar;
When the cart passes by the side of the additional cart, the catch member catches the hook member by engaging the tip of the catch bar with the hook pin,
The hooking pin is guided by the catch bar and is locked to the catch member base, whereby the catch member and the hook member are connected to each other. In claim 2,
The catch member is
A catch member support portion that supports the catch bar so that the catch bar can rotate in the vertical direction with respect to the catch member base portion,
A restriction member that is attached to the catch member support portion and restricts the movement of the catch member support portion so as to suppress the vertical movement of the catch bar;
When the carriage reaches a predetermined position, the restriction of the catch member support portion by the restriction member is released, and the catch bar is rotated in the vertical direction, so that the hook pin is locked by the catch member base portion. A transport cart connecting device, wherein the transport cart is released. In claim 3,
In the predetermined position, a convex portion is provided on the floor surface on which the transport carriage travels,
Wheels that contact the floor surface are connected to the restriction member of the catch member,
When the carriage reaches the predetermined position, the wheel is guided along the surface of the convex portion, so that the position of the restricting member is offset, and the catch member support portion of the catch member is supported by the restricting member. A transport cart connecting device, wherein the restriction is released. In claim 3 or claim 4,
The hook bar is provided to be rotatable in a horizontal direction around the hook member base,
The hook member base includes a hook bar restricting member that restricts horizontal movement of the hook bar in a state where the hook pin is locked to the catch member base.
When the carriage reaches the predetermined position, at least a part of the catch bar descends downward in the vertical direction, so that the restriction of the hook bar by the hook bar restriction member is released, and the hook bar is moved horizontally. A transport cart connecting device, wherein the transport cart is rotated to return to an initial position.   A transport cart comprising the transport cart connecting device according to any one of claims 1 to 5. A transport carriage comprising a carriage and an additional carriage connected via a connecting device to the front side or the rear side of the carriage in the traveling direction;
The connecting device is
A catch member disposed on the carriage;
A hook member disposed on the additional carriage,
When the catch member captures and locks the hook member, the carriage and the additional carriage are connected to each other;
When the cart reaches a predetermined position, the hook is unlocked by the catch member, so that the connection between the cart and the additional cart is released.

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