JP5309864B2 - Carrying device with cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrict the movement of a conveying carriage during delivering work at a delivery point of a conveyed article and automatically release the restriction of the movement in the completion of the work. <P>SOLUTION: The conveying carriage 1 is advanced by converting the lowering action of a loading platform 2 lowered by the weight of a loaded conveyed article M into the rotational action of a drive wheel 12, and retreated by converting the lifting action of the loading platform 2 lifted after the conveyed article M has been unloaded into the rotational action of the drive wheel 12. At a loading point, an engaging means 6 included in the conveying carriage 1 is engaged with a rack S to restrict the movement of the carriage 1. An operating member 7 included in the carriage 1 is operated by coming in contact with the conveyed article M conveyed to the loading platform 2, and interlocking with this operation, the engaging means 6 releases the restriction of the movement. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a transfer device using a carriage that reciprocates between a loading point and an unloading point.

  Conventionally, in an assembly line of an automobile factory or the like, vehicle assembly members are transported by an unmanned transport cart. As this type of transporting cart, the cart is moved forward by using the weight of the transported material, and energy is stored as the cart moves forward. After the transported material is taken out of the cart, the cart is moved backward by the stored energy. There is something which is made to do (refer to patent documents 1).

  FIG. 5 shows a typical transport cart of this type. 1 A of conveyance trolleys provide the loading platform 2 which can be raised / lowered in the trolley | bogie part 10, and while supporting the loading platform 2 with the some coil spring 25, it is urging | biasing to the raising direction. Further, a rack portion 3 and a pinion portion 31 for converting the lifting / lowering operation of the loading platform 2 into a rotation operation are provided, and the rotation operation of the pinion portion 31 is transmitted to the drive wheels 12 via a plurality of gears 39.

When the transport vehicle 1A places the transported object M on the loading platform 2, the loading platform 2 descends against the urging force of the coil spring 25 due to its weight, and this lowering is converted into rotational operation by the rack section 3 and the pinion section 31. Then, it is transmitted to the drive wheel 12 to move forward.
When the conveyed product M is taken out from the loading platform 2 after the conveyance, the loading platform 2 is pushed up by the coil spring 25, and when the loading platform 2 is lifted, the pinion portion 31 rotates in the opposite direction to that at the time of the lowering. The reverse rotation is transmitted to the drive wheel 12 to move backward.
Japanese Patent Application Laid-Open No. 2004-331052

It is necessary to restrict movement of the transport carriage 1A at a loading point where the transported object M is loaded onto the loading platform 2 and an unloading point where the transported object M is taken out from the loading platform 2. In particular, even when the transported object M is being loaded on the loading platform 2 at the above loading point, the transport cart 1A starts moving when the weight of the transported product M is applied to the loading platform 2, so the transported vehicle M is moved until it is completely loaded on the loading platform 2. Need to be regulated.
In patent document 1, the lock part which connects the shelf part and the loading platform 2 in which the conveyance thing M was stored in the said loading point so that attachment / detachment is possible is provided, and an operator locks and cancels | releases the said lock part by manual operation. I try to do it. At the unloading point, a stopper for automatically engaging the loading platform 2 and the shelf for unloading the conveyed product M upon arrival is provided and connected by this.
However, at the loading point, an operator must lock the loading platform 2 on the shelf, load the transported object M on the loading platform 2, and then release the lock, which is troublesome. If the operator forgets to lock, there is a risk that the carriage 10 starts to move while the conveyed product M is being loaded and the conveyed product M falls.
In general, the transported object M is placed on a tray or the like and transported integrally with the tray. After transporting, it is necessary to return the empty tray from which the transported object M has been taken out from the unloading point to the loading point. There is.
Therefore, the present invention can reliably regulate the movement of the carriage at the loading point and the unloading point where the conveyed item is delivered to the carriage, and the return of the empty tray to the loading point is workability. An object of the present invention is to provide a carrier device using a carriage that can be often used.

The invention of claim 1 is a transportation device using a carriage, in which a transportation carriage moves back and forth between a loading point and an unloading point, and delivers a conveyed item.
The transport cart includes a movable cart portion having a frame structure composed of a vertical frame and a horizontal frame, a cargo bed installed on the cart portion so as to be movable up and down, and supports the cargo bed so as to be movable up and down, and the cargo bed in the upward direction. A loading platform support means for urging, an operation conversion means for converting the lifting operation of the loading platform into a rotation operation, and a drive wheel that is rotationally driven through the operation conversion means to move the carriage section,
The transport cart is moved forward by the lowering operation of the load platform that is lowered by the weight of the transported object placed on the load platform at the loading point,
In the transfer device by the carriage that lifts the load bed by the urging force of the load bed support means after the transported object is taken out from the load bed at the unloading point and moves the transfer carriage backward by the lifting operation of the load bed.
The transport cart is placed close to and opposite to the shelf that is provided at these loading points and unloading points and delivers the transported goods to and from the load platform,
The carriage unit is provided with engagement means for engaging the shelf part to restrict the movement of the carriage part when facing the shelf part on the front end side and the rear end side, respectively .
And in either the cart section or the shelf section, provided with an engagement release means for automatically releasing the restriction of the engagement means after delivery of the conveyed product,
As the engagement means on the rear end side, when the transport carriage is brought close to and opposed to the shelf at the loading point, the rear end of the horizontal frame that faces the shelf is detachably engaged with the shelf. A hook member is provided,
The hook member is rotatably supported around a support shaft provided at the rear end of the horizontal frame, and the engagement position where the claw portion provided at one end engages with the shelf portion is released. While being provided so as to be rotatable at the release position, it is urged to the engagement position,
As the disengaging means, an operating member that operates when the transported object moved to the cargo bed abuts when the conveyed product is delivered from the shelf to the cargo bed on the front end side of the horizontal frame, and the actuating member; Providing a connecting member for connecting the hook member;
The actuating member is supported so as to be rotatable about a support shaft provided on the front end side of the horizontal frame, and has a position where one end stands above the loading platform, and a position where the one end moves to the loading platform. It is provided so that it can rotate to the tilted posture pressed against it,
The other end of the hook member and the other end of the operating member are connected by the connecting member, and when the operating member is tilted by abutting against the conveyed product, the hook member is interlocked by the connecting member in the disengagement direction. The hook member is rotated to release the engagement of the hook member with the shelf .

Since the conveying device engages the respective shelves and the carriage part of the carriage with the engaging means at the loading point and the unloading point, the movement of the carriage is surely restricted when the article is delivered. be able to. In addition, after the delivery of the conveyed product, the engagement is automatically released by the engagement release means, so that the transfer carriage starts to move.
A hook member is provided on a lateral frame of the carriage unit as an engaging means on the rear end side of the carriage unit, and the hook member is engaged with a shelf part at a loading point to restrict the start of the conveyance carriage. In addition, an actuating member that operates in contact with the conveyed product carried into the loading platform at the loading point as the disengagement means is provided in the horizontal frame, and by interlocking the pivoting of the actuating member and the pivoting of the hook member, With a simple mechanism, the transport carriage can automatically move when the placement of the transported object is completed.

According to a second aspect of the present invention, there is provided a transport apparatus using a carriage according to the first aspect , wherein the carriage is close to a front end side of the carriage section of the carriage, and the transport carriage is close to the unloading point shelf as the engaging means. While providing an adsorbing member that adsorbs the cart part to the shelf part and restricts the backward movement of the cart part when opposed to each other, the shelf part at the unloading point is provided with the engagement release means An extruding member is provided for releasing the restriction of the backward movement of the cart portion by the adsorbing member by pushing the cart portion in the backward direction after delivering the conveyed product from the loading platform to the shelf portion.
At the unloading point, the transport carriage can be suction-engaged with the shelf by the suction member, and suction can be released by pushing the push-out member.

According to a third aspect of the present invention, in the conveyance device using a carriage according to the second aspect , the attracting member is composed of a magnet, and the pushing member is composed of a cylinder device that can be expanded and contracted.
A magnet can be suitably used as the attracting member, and a cylinder device can be suitably used as the pushing member.

According to a fourth aspect of the present invention, there is provided a transport apparatus using a carriage according to any one of the second and third aspects , wherein the transport carriage stores a transported object and is transported to the unloading point together with the transported article. While providing a tray stand for transporting the tray that has become a return path, the shelf at the unloading point is provided with a tray shelf for placing an empty tray at a position facing the tray base of the transport carriage, As the pushing member, the cylinder device is provided that pushes the empty tray from the tray shelf at the unloading point to the tray of the transport carriage and pushes the carriage in the backward direction.
An empty tray can be transported by a transport cart on the return path from the unloading point to the loading point, and at the unloading point, the extrusion of the empty tray to the transport cart side and the extrusion of the transport cart are common cylinders. Can be done with the device.

  An embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the present invention is applied to a transport apparatus that transports parts assembled in a car compartment of an automobile, such as an air conditioning unit, between the parts storage shelf side and the assembly line side by a transport carriage in an automobile factory. It is. Note that the transport carriage moves back and forth in a straight line between the loading point on the component storage shelf side and the unloading point on the assembly line side.

  As shown in FIGS. 1 and 2, the transport cart 1 includes a cart unit 10 that can be moved by a pair of left and right drive wheels 12 and a pair of left and right auxiliary wheels 13, a platform 2 that can be moved up and down, and a platform 2. The operation conversion means 3 which changes the raising / lowering operation | movement to rotational operation is provided. A cart unit 10 having a frame structure made of a metal square pipe has four vertical frames 101 and a plurality of horizontal frames 102, 103, 104, 105 that connect these upper ends, lower ends, and intermediate positions in a rectangular shape in the horizontal direction. And form a vertically long, rectangular parallelepiped shape.

Left and right drive wheels 12 are supported by an axle 11 at the rear portion of the lower end of the carriage unit 10. Left and right auxiliary wheels 13 are installed on the front side of the lower end of the carriage unit 10. Further, on both the left and right sides of the lower end of the carriage unit 10 are provided with pins 14 projecting downward as shown in FIG. 2, and the lower ends of these pins 14 are inserted into guide grooves 15 having a U-shaped cross section formed on the floor G. The carriage 1 is reciprocated between the loading point and the unloading point by the guide groove 15.

As shown in FIGS. 1 and 2, the loading platform 2 has a horizontal plate shape, and a roller conveyor portion 21 that facilitates the forward and backward movement of the conveyed product M is installed on the upper surface thereof.
The loading platform 2 is provided so that the front and rear centers of the left and right side edges can be raised and lowered by guiding a pair of left and right guide rails 4 as raising and lowering guide means and a guide piece 41 that slides in the vertical direction along this guide rail.

  In addition, the loading platform 2 is suspended from above by a pair of left and right spring balancers 5 serving as loading platform support means at the upper positions of the left and right guide rails 4 and the front and rear central portions of the left and right side edges, respectively. The spring balancer 5 is a known product and includes a wire 51 that can be pulled out from the main body, and is configured to urge the wire 51 drawn out by a spring provided in the main body in the winding direction. The spring balancer 5 can adjust the spring force for urging the wire 51 in the winding direction, and this adjustment can be easily performed with one tool such as a screw driver.

  The left and right spring balancers 5 are respectively suspended from the front and rear centers of the horizontal frames 102 on the left and right sides of the upper end of the carriage unit 10 via mounting brackets at the upper end of the main body unit. Both spring balancers 5 connect the ends of the drawn wires 51 to the front and rear centers of the left and right side edges of the loading platform 2, respectively, and support the loading platform 2 to be lifted upward by the urging force of winding the wires 51. .

  Note that the upper limit position of the loading platform 2 when it is lifted is restricted by a stopper (not shown), and the upper surface of the loading platform 2 is a shelf on which the transport object M is moved to the transportation cart 1 side at the loading point (FIG. 1). The height position is set to be almost horizontal with the part S.

  Below the loading platform 2, as an action conversion means, a rack portion 3 that protrudes vertically downward from the center of the lower surface of the loading platform 2, and a cart portion 10 side, meshes with the rack portion 3 and rotates by raising and lowering the rack portion 3. And a pinion unit 31 to be configured.

  The pinion portion 31 has a sprocket provided on a rotating shaft that supports the pinion portion 31, and the sprocket and the sprocket provided on the axle 11 of the drive wheel 12 are connected by a chain member 34 to drive the rotation of the pinion portion 31. This is transmitted to the wheel 12. Note that reference numeral 35 in FIG. 1 denotes a presser portion that prevents the rack portion 3 and the pinion portion 31 from being disengaged.

  On both the left and right sides of the transport carriage 1 are hook members 6 that are engaging means for engaging the shelf S at the loading point and restricting movement of the carriage section 10, and operating members that are release means for releasing the engagement. 7 is provided.

The hook member 6 is made of a substantially rectangular metal plate, and a bent portion is supported by a support shaft 60 at a position near the rear end of the horizontal frame 104 on both the left and right sides of the carriage unit 10 so as to be vertically rotatable. One end 61 of the hook member 6 protrudes rearward of the carriage unit 10, and the hook member 6 is urged to rotate by a spring member or the like so that the one end 61 is in an obliquely upward engagement position. Then, the hook member 6 engages the claw portion provided at the one end 61 with the locking frame S1 horizontally provided along the edge of the shelf S so as to be detachable from below. The one end 61 is tapered from the claw portion to the tip.
The other end 62 of the hook member 6 faces downward, and one end of a connecting member 67 is connected to the tip.

  The actuating member 7 is made of a substantially L-shaped metal plate, and a bent portion is supported at the front side position of the lateral frame 104 on both the left and right sides of the carriage unit 10 by a support shaft 70 so as to be vertically rotatable. The actuating member 7 is in an upright posture with one end 71 facing upward, and a connecting rod 73 (FIG. 2) is installed between the one end 71 of the left and right actuating members 7 raised above the upper surface of the cargo bed 2 so as to straddle the cargo bed 2. It is.

  The actuating member 7 is connected to the other end 72 at the other end of the connecting member 67 and is held in the standing posture when the hook member 6 is in the engaging position. Then, as shown by the phantom line in FIG. 1, when the conveyed product M is placed on the loading platform 2 from the shelf S (white arrow), the front end of the conveyed product M is connected to the connecting rod 73 connecting the left and right operating members 7. Then, the actuating member 7 is pushed down to the front lying position via the connecting rod 73. As the actuating member 7 is turned down, the one end 61 of the hook member 6 is turned downward via the connecting member 67, so that the engagement with the shelf S is released.

  At the front end of the transport carriage 1, as an engaging means for engaging with the shelf L at the upper and lower intermediate positions of the left and right vertical frames 101 at the unloading point shown in FIG. A magnet 8 as an attracting member to be attracted by L is provided.

  A tray table 16 is formed at the upper end of the transport carriage 1 by fixing a horizontal plate on the horizontal frame 102. On both the left and right sides of the tray base 16, there are provided restriction pipes 106 that extend in the front-rear direction between the upper ends of the front and rear vertical frames 101 and restrict lateral movement of the tray T placed on the tray base 16. It should be noted that no restriction pipes are provided on both the front and rear sides of the tray base 16 so that the tray T can be transferred in the front-rear direction.

A transport operation by the transport device will be described with reference to FIGS. The conveyed product M is placed on a tray T formed of a rectangular container body, and is conveyed integrally with the tray T. As shown in FIG. 1, the transport cart 1 is engaged with the shelf portion S by the hook member 6 in a state where the transport cart 1 is in close proximity to the shelf portion S at the loading point, and the forward movement of the transport cart 1 is restricted. .
When the conveyed product M is moved from the shelf S to the loading platform 2, the actuating member 7 is tilted forward and the hook member 6 is moved from the engagement position to the disengagement position via the connecting member 67. It rotates and the engagement with the shelf S is released. In this case, since the operation member 7 is provided on the front side of the transport carriage 1, the engagement with the shelf S is not released until the transported object M is completely moved to the loading platform 2.

  When the carriage 1 is disengaged from the shelf S, the wire 51 is pulled out against the urging force of the spring balancer 5 due to the weight of the transported object M placed on the platform 2, and the platform 2 is As a result of the downward movement of the rack portion 3 (in the direction of arrow D), the pinion portion 31 rotates in the direction of arrow F, and the drive wheels 12 are rotationally driven in the direction of arrow F to advance the transport carriage 1 (white arrow F). direction).

As shown in FIG. 3, when the conveyance carriage 1 is closely opposed arrive to the ledge L to unloading point, adsorbed to the left and right strut L2 of the right and left of the magnet 8 ledge L provided at the front end of the conveyance carriage 1 Then, the transport carriage 1 is engaged with the shelf L.
In this case, the conveyance carriage 1 is provided with a stopper (not shown) that restricts the lowering of the loading platform 2 so that the lowering position of the loading platform 2 is aligned with the height of the shelf L. The stopper that restricts the upper limit of the lift of the loading platform 2 and the stopper that regulates the lower limit of the lowering of the loading platform 2 are provided in, for example, the guide rail 4 so as to restrict the raising and lowering of the guide piece 41. desirable.

Even if the conveyed product M is moved from the loading platform 2 to the shelf portion L at the unloading point, the movement of the transportation cart 1 is restricted by the adsorption to the shelf portion L by the magnet 8. When moving the conveyed product M to the shelf L,
Since the loading platform 2 is lowered, the conveyed product M passes under the connecting rod 73 and moves to the shelf L without interfering with the operation member 7.
At the unloading point, the conveyed product M is taken out from the tray T, and an empty tray T is loaded on the conveying cart 1 and returned to the loading point.
The shelf L at the unloading point has a two-stage structure and is provided with a tray shelf L1 in the upper stage, and the tray shelf L1 and the tray base 16 of the transport carriage 1 have substantially the same height. An empty tray T is carried into the tray shelf L1 by a conveyor (not shown).

  The tray shelf L1 is provided with a push rod 9 made of a telescopic cylinder device so as to push an empty tray T to the tray base 16. When the empty tray T is carried into the tray shelf L1 by the conveyor or the like, the push rod 9 automatically pushes the empty tray T to the tray base 16 of the transfer carriage 1, and at this time, the transfer carriage 1 is moved backward. It functions as a disengagement means that pushes away and releases the engagement between the shelf L and the transport carriage 1.

  The push rod 9 is installed along the lower surface of the tray shelf L1. Corresponding to the push rod 9, the tray shelf L1 is formed with a slit that bisects the shelf in the width direction. The push rod 9 penetrates the slit and protrudes onto the shelf to push the empty tray T. The 1st extrusion part 91 to take out is formed. Further, a second push-out portion 92 that protrudes downward from the tray table 16 of the transport carriage 1 is formed at the tip of the push rod 9, and this is in contact with the contact portion 17 provided on the lower surface of the tray table 16. The conveying cart 1 is pushed backward.

  The cargo M is unloaded from the loading platform 2 and transferred to the shelf L at the point where the loading platform 2 is unloaded, and the empty tray T is loaded into the tray shelf L1 and is moved to the tray shelf L1 by the first pushing portion 91 of the push rod 9. When the transport carriage 1 is pushed out from L1 to the tray base 16 and the transport carriage 1 is pushed backward by the second pushing portion 92 of the push rod 9, the transport carriage 1 is unloaded by the unwinding of the wire 51 of the spring balancer 5. The rack portion 3 is raised (in the direction of arrow U), the pinion portion 31 and the drive wheel 12 are rotated in the direction of arrow R through the pinion portion 31, and the transport carriage 1 is retracted in the direction of white arrow R to be loaded (FIG. 1). Return to. At the loading point, the taper portion of one end 61 of the hook member 6 comes into contact with the engagement frame S1 of the shelf portion S, and when the transport carriage 1 is further retracted, the claw portion of the one end 61 of the hook member 6 engages the engagement frame S1. Beyond this, it engages with this to regulate the movement of the transport carriage 1. This completes one transport operation in which the transport cart 1 reciprocates between the loading point and the unloading point, and this operation is repeated for each new transport object.

According to the present embodiment, since the forward movement of the transport carriage 1 is restricted by engaging the hook member 6 of the transport carriage 1 with the shelf S at the loading point, as in the prior art, from the shelf S to the load platform 2. There is no possibility that the carriage moves forward during the delivery of the conveyed product M to the vehicle and the conveyed product falls, and the conveyed product M can be safely delivered from the shelf S to the loading platform 2.
Further, when the conveyed product M is completely delivered to the loading platform 2, the engagement of the hook member 6 and the shelf S is automatically released by the operation of the operation member 7, so that the conveyance cart 1 starts moving forward,
The conveyed product M can be smoothly conveyed from the loading point to the unloading point.

On the other hand, at the unloading point, the transport carriage 1 is attracted and engaged with the shelf L by the magnet 8 to restrict the backward movement of the transport carriage 1, so that the delivery of the transported article M from the load platform 2 to the shelf L is safe. To be made.
In addition, the transport carriage 1 is provided with a tray base 16 and a tray shelf L1 at the unloading point shelf L. The push rod 9 pushes and transfers an empty tray T from the tray shelf L1 to the tray base 16 at the same time. Since the transport carriage 1 is pushed backward, the engagement of the magnet 8 with the shelf L is released, and the empty tray T is returned to the loading point with good workability.

In the present embodiment, at the unloading point, the transport carriage 1 is engaged with the shelf L by the magnet 8 and the above engagement is released by the push rod 9. In the same manner as above, a hook member that engages with the shelf L at the unloading point is provided, and an operation member that releases the engagement when an empty tray is placed on the tray base of the transport carriage 1 is provided. Also good. However, at the unloading point, even if a part of the conveyed product M is placed on the loading platform even during the delivery of the conveyed product M from the loading platform 2 to the shelf L, the loading platform 2 does not rise and the conveying cart 1 moves backward. Therefore, the adsorption by the magnet 8 is sufficient, and the structure can be simplified.
Although a structure supported by a coil spring 25 shown in FIG. 5 can be used as a means for supporting the loading platform 2 of the transport carriage 1, the structure using the spring balancer 5 is simple and the adjustment of the spring force is easy. This is advantageous.

FIG. 4 shows another embodiment of the present invention in which the transport cart 1 is constituted by another hook member 6A and another actuating member 7A that engage with the shelf S at the loading point. The basic structure of the transport carriage 1 is the same as that of the previous embodiment, and FIG. 4 is a plan view of the main part when the vicinity of the intermediate horizontal frame 104 on the left side of the transport carriage 1 is viewed from above.
The vertical frame 101 at the rear end of the carriage unit 10 is provided with a bracket projecting in a horizontal direction at a position higher than the loading platform 2, and a support shaft 60 is erected perpendicularly to the bracket. It is supported so as to be rotatable in the direction.

  The hook member 6A has a claw portion formed at one end 61 projecting rearward of the cart portion 10 and engages with a pipe-like column S2 erected on the end of the shelf portion S (represented by an imaginary line in the figure). ) To regulate the movement of the transport carriage 1. The hook member 6A is urged to rotate in the engagement direction. One end of a connecting member 67 is connected to the other end 62 of the hook member 6A.

  The vertical frame 101 at the front end of the carriage unit 10 is provided with a bracket projecting in the horizontal direction, and a support shaft 70 is erected vertically thereto, and the operation member 7A is supported by the support shaft 70 so as to be rotatable in the horizontal direction. It is. The actuating member 7 </ b> A is arranged in an oblique posture (virtual line) with one end 71 directed toward the center side of the loading platform 2, and the other end is supported by the support shaft 70. The intermediate portion of the actuating member 7A is connected to the other end 62 of the hook member 6A via a connecting member 67. The intermediate portion of the connecting member 67 is bent in a concave shape avoiding the wire 51 of the spring balancer that supports the loading platform 2.

  According to this, when the conveyed product M is moved from the shelf S to the loading platform 2, the conveyed product M hits one end 71 of the operating member 7A and pushes it forward. When the actuating member 7A rotates (represented by a solid line in the figure), the other end 62 of the hook member 6A is pulled via the connecting member 67, and the hook member 6A rotates to the disengagement position (solid line). Release the movement restriction of the transport cart.

The conveying apparatus by the trolley | bogie of this invention is shown, and it is a side view which shows delivery of the conveyed product in a loading point. It is a front view of the conveyance trolley of the above-mentioned conveyance device. FIG. 2 is a side view showing delivery of a conveyed product at an unloading point corresponding to FIG. The other embodiment of the present invention is shown, and is a main part plan view showing a hook member and an operation member of a transport carriage. It is a schematic side view of the conventional typical unmanned conveyance cart.

Explanation of symbols

1 Carriage truck 10 Carriage part
101 vertical frame
104 Horizontal frame 12 Driving wheel 16 Tray base 2 Loading base 3 Rack part (operation converting means)
31 Pinion part (operation conversion means)
5 Spring balancer (carrier support means)
6,6A Hook member (engaging means)
60 Support shaft (hook support shaft)
61 one end 62 other end 67 connecting member 7, 7A actuating member (engagement release means)
70 Support shaft (working support shaft)
71 one end 72 other end 8 magnet (adsorption member, engagement member)
9 Push rod (cylinder device, disengagement means)
M Transported goods T Tray S Loading point shelf L Unloading point shelf L1 Tray shelf

Claims (4)

A transport device using a carriage that transports a transport object by reciprocating between a loading point and an unloading point,
The transport cart includes a movable cart portion having a frame structure composed of a vertical frame and a horizontal frame, a cargo bed installed on the cart portion so as to be movable up and down, and supports the cargo bed so as to be movable up and down, and the cargo bed in the upward direction. A loading platform support means for urging, an operation conversion means for converting the lifting operation of the loading platform into a rotation operation, and a drive wheel that is rotationally driven through the operation conversion means to move the carriage section,
The transport cart is moved forward by the lowering operation of the load platform that is lowered by the weight of the transported object placed on the load platform at the loading point,
In the transfer device by the carriage that lifts the load bed by the urging force of the load bed support means after the transported object is taken out from the load bed at the unloading point and moves the transfer carriage backward by the lifting operation of the load bed.
The transport cart is placed close to and opposite to the shelf that is provided at these loading points and unloading points and delivers the transported goods to and from the load platform,
The carriage unit is provided with engagement means for engaging the shelf part to restrict the movement of the carriage part when facing the shelf part on the front end side and the rear end side, respectively .
And in either the cart section or the shelf section, provided with an engagement release means for automatically releasing the restriction of the engagement means after delivery of the conveyed product,
As the engagement means on the rear end side, when the transport carriage is brought close to and opposed to the shelf at the loading point, the rear end of the horizontal frame that faces the shelf is detachably engaged with the shelf. A hook member is provided,
The hook member is rotatably supported around a support shaft provided at the rear end of the horizontal frame, and the engagement position where the claw portion provided at one end engages with the shelf portion is released. While being provided so as to be rotatable at the release position, it is urged to the engagement position,
As the disengaging means, an operating member that operates when the transported object moved to the cargo bed abuts when the conveyed product is delivered from the shelf to the cargo bed on the front end side of the horizontal frame, and the actuating member; Providing a connecting member for connecting the hook member;
The actuating member is supported so as to be rotatable about a support shaft provided on the front end side of the horizontal frame, and has a position where one end stands above the loading platform, and a position where the one end moves to the loading platform. It is provided so that it can rotate to the tilted posture pressed against it,
The other end of the hook member and the other end of the operating member are connected by the connecting member, and when the operating member is tilted by abutting against the conveyed product, the hook member is interlocked by the connecting member in the disengagement direction. A carriage conveying device characterized in that the hook member is rotated to disengage the hook member from the shelf . In the conveyance apparatus by the trolley | bogie of Claim 1,
When the carriage is placed close to the shelf at the unloading point as the engaging means on the front end side of the carriage of the carriage, the carriage is adsorbed to the shelf when the carriage is brought close to the shelf. While providing a suction member that restricts the backward movement of
In the shelf at the unloading point, as the disengaging means, the carriage is pushed out in the retreat direction after delivering the conveyed material from the cargo bed to the shelf, and the carriage is moved backward by the adsorption member. A conveying device using a carriage provided with an extruding member for releasing the regulation . In the conveyance apparatus by the trolley | bogie of Claim 2 ,
The adsorption member is composed of a magnet,
A conveying device using a carriage in which the pushing member is constituted by a cylinder device capable of expanding and contracting . In the conveyance apparatus by the trolley | bogie in any one of Claim 2 or 3 ,
While the transport carriage is provided with a tray base for storing the transported goods and transporting the tray that has been transported to the unloading point together with the transported tray on the return path,
The shelf part at the unloading point is provided with a tray shelf for placing an empty tray at a position facing the tray base of the transport carriage,
A conveying device using a carriage provided with the cylinder device that pushes the empty tray from the tray shelf at the unloading point to the tray of the conveying carriage and pushes the carriage portion in the backward direction as the pushing member .

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