JP2003226418A - Carriage conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carriage conveyor capable of decreasing the total height. <P>SOLUTION: This carriage conveyor comprises a driving chain 60 traveling along a chain guide rail 62 mounted at a platform 20 side, and a carriage 10 towed by the driving chain 60 and advanced on the platform 20, and a carriage guide 31 mounted at a carriage 10 side is guided by a carriage guide rail 21 mounted at the platform 20 side. The carriage guide rail 21 is mounted at a side of the chain guide rail 62. Whereby the total height of the carriage conveyor can be lowered. As a result, a groove cut on an installation floor face becomes unnecessary, and the carriage conveyor can be moved. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley conveyor in which a trolley on which a transported object is placed is towed by a drive chain.

[0002]

2. Description of the Related Art In a production line for assembling automobiles,
Various conveyors are used depending on the parts to be assembled and assembling means, and one of them is a trolley conveyor.
The trolley conveyor pulls a trolley on which a conveyed object is placed by a drive chain, and has an advantage that an operator can freely perform an assembly work around the trolley.

In the production line of a trolley conveyor, when parts are assembled by using a tightening device or a press-fitting device which is an assembling means, the production line is configured such that these devices move in accordance with the movement of the dolly. In some cases, the production line may be configured to temporarily stop the cart.

FIGS. 5 to 7 show examples of conventional truck conveyors configured to temporarily stop the truck.
In the figure, reference numeral 100 denotes a dolly on which a conveyed object is placed, which is configured to be pulled by a drive chain 101 in a direction of an arrow 102. The details will be described below. Bogie guides 103a and 103b are provided at the front and rear of the traveling direction of each carriage 100, and wheels provided on the carriage guides 103a and 103b are guided by a carriage guide rail 104. The drive chain 101 is located below the carriage guide rail 104, and the drive chain 101 is guided by the chain guide rail 105. Bogie guides 103a provided at the front and rear of the bogie 100, 1
On the front carriage guide 103a of the reference numeral 03b, the shaft 10 is provided with a bending arm-shaped locking member 106 that is bent between both pieces.
7 is provided with a drive separating mechanism that is rotatable around 7, and a hook portion 106a is provided at the left end (shown in FIG. 5) of the locking member 106. When the left end of the locking member 106 is lowered, the hook portion 106a is locked to the pin 108 provided on the drive chain 101, and the carriage 10
0 is pulled by the drive chain 101 to proceed. on the other hand,
When the locking member 106 is rotated so that the left end of the locking member 106 is raised, the hook portion 106a and the pin 108 are unlocked, and the drive of the carriage is also released.

In order to stop the carriage 100 at a predetermined position (such as an assembling work position), a stopper 109 is installed at a proper position on the locus through which the locking member 106 passes (position below the locking member 106). . When the locking member 106 passes through the place where the stopper 109 is installed, as shown in FIG. 6, the upper surface of the stopper 109 comes into contact with the lower left surface of the locking member 106, and the locking member 106 is forcibly illustrated. Rotate clockwise. As a result, the engagement between the hook portion 106a and the pin 108 of the drive chain 101 is released, and the carriage 10
The driving force given to 0 disappears and the carriage 100 stops. A bumper 110 is provided on the rear carriage guide 103b of the carriage guides 103a and 103b so as to face obliquely rearward and downward. As a result, when the succeeding carriage 100 approaches due to a delay in the work of the stopped carriage 100, the bumper 110 of the preceding carriage 100 comes into contact with the upper right surface of the locking member 106 of the succeeding carriage 100. As shown in FIG. 5, the locking member 106 is rotated clockwise in the figure to rotate the locking member 106 and the pin 108.
It is possible to stop the progress of the succeeding carriage 100 by releasing the engagement with.

[0006]

In the conventional truck conveyor described above, the drive chain 101, the chain guide rail 105, and the truck guide 103 are provided.
As shown in FIG. 7, the drive separation mechanism provided on the carriage guide including a and 103b, the carriage guide rail 104, and the locking member 106 is arranged in series in the vertical direction. Therefore, it is inevitable that the height of the entire carriage conveyor becomes relatively high. Here, if the drive chain 101 and the drive separation mechanism can be arranged in a groove dug below the floor surface 111 as shown in FIG. If you want to avoid digging (when relocation etc. is considered),
It is necessary to provide a platform on which a worker can work and to accommodate the drive chain and the drive separation mechanism inside the platform. Then, the step between the floor surface 111 and the step is troublesome for the worker to move,
There is a risk that the worker will trip over the step and fall.

Further, in the case of the conventional trolley conveyor, the trolley can be temporarily stopped only when it passes through the position where the stopper 109 is installed, or when the trolley approaches the preceding trolley and the bumper 110 and the locking member 106 are approached. However, there is a possibility of causing an unexpected trouble, such as when a worker is working behind a stopped trolley, a succeeding trolley approaches and is caught.

The present invention has been made in view of the above-mentioned problems, and it is a basic object of the present invention to provide a trolley conveyor which can be configured to have a low overall height. Also,
Another object is to provide a trolley conveyor that can be appropriately stopped when there is an obstacle ahead of the trolley in the traveling direction.

[0009]

In order to solve the above problems, the invention according to claim 1 of the trolley conveyor of the present invention is
A platform having a predetermined track, a drive chain located on the platform side and driven along the platform, a carriage movable on the platform, and arranged between the carriage and the drive chain. , Transmitting the driving force of the drive chain to the carriage, and driving force transmitting / disconnecting means capable of canceling the transmission, and being arranged on the platform side, guiding the truck to move along the platform. A carriage guide rail, and a carriage guide provided on the carriage so as to be located between the carriage guide rail and the carriage, and guided by the carriage guide rail, wherein the carriage guide rail and the carriage guide are , Located on the side of the driving force transmitting / disconnecting means.

According to a second aspect of the present invention, in the first aspect of the present invention, the bogie is provided with an obstacle detecting means projecting forward, and the obstacle detecting means drives the drive according to the detection of the obstacle. It is characterized in that the force transmission / interruption means is controlled so that the transmission of the driving force is released.

According to a third aspect of the present invention, in the second aspect of the present invention, a trolley stop mechanism is provided at a predetermined position of the platform, and the trolley stop mechanism is provided with respect to the passage of the obstacle detecting means. It is characterized by comprising a detected part that can move in and out and a detected part drive means for moving the detected part.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the bogie stop mechanism has a turning arm having a central portion axially fixed, and the detected portion is provided on one end side of the turning arm. Is provided, and the detected part drive means for rotating the revolving arm is connected to the other end side.

According to a fifth aspect of the present invention, in the invention according to any one of the second to fourth aspects, the obstacle detecting means is a rod urged forward by the elastic member in the traveling direction of the carriage,
The present invention is characterized in that a contact plate attached to the tip of the rod is provided, and the end of the rod and the contact plate are projected in front of the carriage.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the driving force transmission / interruption means has a driving force separation mechanism for canceling the transmission of the driving force in accordance with the backward movement of the rod. .

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, one end of a locking member of the drive separation mechanism is connected to the rod, and the locking member is axially fixed at another portion, The locking member is configured to rotate in association with the forward and backward movement of the rod, and the hook formed on the locking member is disengaged from the drive chain by the rotation of the locking member. Is characterized by.

According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, it can be detected by an obstacle detecting means of the succeeding truck behind the truck by approaching the succeeding truck. It is characterized in that a rear bracket is provided.

[0017]

In the trolley conveyor of the present invention configured as described above, the trolley guide rail and the trolley guide and the driving force transmitting / disconnecting means are not installed in series in the longitudinal direction, but are installed laterally to each other. It is possible to keep the height of the entire trolley conveyor low.

Further, since the obstacle detecting means projecting forward is provided as in the second aspect of the present invention, it becomes possible to detect the preceding truck and the obstacles such as workers and the like accurately. The safety of can be secured. The obstacle detecting means includes a rod urged forward by an elastic member such as a coil spring in the traveling direction of the trolley, and a contact plate attached to the tip of the rod. It is desirable that the abutment plate be configured so as to project to the front of the front frame. With this configuration, it is possible to mechanically and accurately detect a preceding bogie and an obstacle ahead.

Further, according to the third aspect of the present invention, if a cart stopping mechanism having a detected portion that can move in and out of the passage locus of the obstacle detecting means is provided, the detected portion can be appropriately moved with respect to the passage locus. By moving in and out, the carriage can be stopped at a predetermined position, and the obstacle detection means can be used in the stop, so that the structure can be simplified.

Further, as described in claim 8, if a rear bracket which can be detected by the obstacle detecting means of the succeeding truck by the approach of the succeeding truck is provided behind the truck, the obstacle detecting means is provided. Can reliably detect the approach of the front bogie to stop the bogie, and by providing the rear bracket so as to face the obstacle detection means, adjust the length of the rear bracket, etc. The stop distance can be adjusted appropriately.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a carriage conveyor according to an embodiment of the present invention will be described with reference to the accompanying drawings. 1 and 2 show the carriage 10 stopped at the stop position, and the carriage 10 is stopped with the direction of arrow 11 in FIG. 2 as the traveling direction. The dolly 10 includes a front frame 12, a rear frame 13, and a frame body 15 assembled into a substantially rectangular shape by the left and right side frames 14, 14. Wheel mounting portions 160 are rotatably provided on a lower surface of the frame body 15 at vertical rotation shafts, and wheels 16 are rotatably mounted on the wheel mounting portions 160 by horizontal rotation shafts. By positioning the wheels 16 on the platform 20, the carriage 10 can move along the platform 20. At the place where the platform 20 curves, the truck 10 can follow the trajectory of the platform 20 by rotating the wheel mounting portion 160. The platform 20 is arranged to have a desired trajectory.

Further, the guide rod 30 faces the platform 20 at a position deviated to one side (to the left in the traveling direction) from the longitudinal center of each of the lower surface of the front frame 12 and the lower surface of the rear frame 13 described above. It is provided so as to hang down, and a trolley guide 31 is provided at the lower end of the guide rod 30. The trolley guide 31 is housed between the trolley guide rails 21, 21 installed on the platform 20 side (downward). As a result, the movement of the carriage 10 is guided by the carriage guide rails 21, 21. The trolley guide rails 21, 21 are arranged along the platform 20.

A bumper 40 constituting an obstacle detecting means is provided at a substantially central position of the front frame 12 toward the front. The bumper 40 is composed of a rod 41 horizontally installed from directly below the front frame 12 toward the traveling direction of the carriage 10 and a contact plate 42 attached to the tip of the rod 41. The contact plate 42 projects forward from the front frame 12.
The rear side of the rod 41 is inserted into a cylindrical bearing 44 provided along the lower surface of the front frame 12 by L-shaped brackets 43 attached to the front and rear surfaces of the front frame 12, and the rod 41 advances. It is designed so that it can move forwards and backwards in any direction. Then, the rod 41 is biased forward by the coil spring 45 fitted between the contact plate 42 and the tubular bearing 44.

Further, as shown in FIG. 3, the rod 41 constituting the bumper 40 is linked to a drive separation mechanism 50 which engages and disengages with a drive chain 60 which will be described later. That is, one end of the locking member 53 rotatably supported by the horizontal left and right shafts 52 installed below the L-shaped arm plate 51 extending downward from both sides of the cylindrical bearing 44 and the rear end of the rod 41 are disposed. It is connected by a pin 54 so that the locking member 53 rotates around the shaft 52 in conjunction with the forward and backward movement of the rod 41.

The locking member 53 has a substantially crank shape and is rotatable by inserting the shaft 52 into the intermediate portion thereof.
The part which is connected to 1 and which hangs down from the other end forms a hook 55.

On the lower side of the platform 20, a drive chain 60 is installed along the platform 20, and a pin 61 is provided on the upper surface at an appropriate position in the longitudinal direction of the drive chain 60. The hook 55 formed on the locking member 53 on the side of the drive separation mechanism 50 described above.
You can engage and disengage. FIG. 3 shows a bumper 40
The solid line indicates that the rod 41 is retracted rearward. When the locking member 53 is rotated clockwise in the drawing in connection with the retracting of the rod 41, the engagement between the hook 55 and the pin 61 is released. I am doing it. Further, when the rod 41 of the bumper 40 is biased by the coil spring 45 and protrudes forward, the locking member 53 rotates counterclockwise in the figure, and the hook 55 is released as shown by the chain line in FIG. The pin 61 can be engaged. The drive separation mechanism 50 and the pin 61 of the drive chain 60 constitute a drive force transmission / interruption means.

The drive chain 60 has a chain guide rail 62 installed on the platform 20 side.
It is designed to run along. As mentioned above,
The carriage guide 31 is provided at a position offset to one side from the longitudinal center of the front frame 12, while the drive separation mechanism 50 and the drive chain 60 are provided at a substantially central position of the front frame 12. For platform 2
On the 0 side, as shown in FIG. 1, the carriage guide 30 and the carriage guide rail 21 are located laterally in the horizontal direction of the drive force transmission / interruption means.

A rear bracket 17 is installed at a substantially central position of the rear frame 13 forming the frame body 15 so as to project rearward. The vertical bracket 18 is provided at the tip of the rear bracket 17.
Reference numeral 8 extends downward to the height position of the contact plate 42 of the bumper 40.

Next, as shown in FIGS. 1 and 2, a carriage stop mechanism 70 is installed on the platform 20 side at a desired position where the carriage 10 is stopped. The carriage stop mechanism 70 includes a rod 72 of a fluid pressure cylinder 71 arranged along the longitudinal direction of the platform 20 and a swing arm 7.
3 are connected. The swivel arm 73 is installed such that its central portion is rotatable about a vertical axis 75 in a horizontal plane, and a swivel plate 74 on one side of the swivel arm 73 is connected to the rod 72 of the fluid pressure cylinder 71. Has been done. The arm portion 73a on the other side of the turning arm 73 is
A base end portion is connected to a rising plate 76 erected on the plate 74 near the shaft 75, and a tip end extending obliquely upward from the base end portion is a rod 41 of the bumper 40 as a detected portion.
Also, the path of the contact plate 42 can be crossed. That is, the fluid pressure cylinder 71 functions as a detected portion drive means for moving the detected portion. The figure shows the rod 72 of the fluid pressure cylinder 71 in a protruding state, and the arm portion 73a of the swivel arm 73 intersects with the locus of passage of the rod 41 and the contact plate 42. When the rod 72 of the fluid pressure cylinder 71 is retracted, the rotating plate 74 rotates in the clockwise direction in the figure as shown by the chain line, and accordingly, the arm portion 73a moves outside the passage path of the rod 41 and the contact plate 42. It is configured to evacuate to.

The configuration of the trolley conveyor according to the embodiment has been described above. As described above, the carriage guide 31 is separated from the power system including the drive separation mechanism 50 and the drive chain 60, and is installed at a position deviated to one side from the center of the frame 15 in the traveling direction. On the side, the drive chain 60 and the chain guide rails 62 and the carriage guide rail 21 with respect to the carriage guide 31 can be installed horizontally adjacent to each other. That is, it is possible to avoid the configuration in which the power system and the guide system of the carriage guide 31 and the carriage guide rail 21 are arranged in series in the vertical direction. As a result, it is possible to configure the height of the entire carriage conveyor as low as possible,
It was possible to provide a trolley conveyor that is easy for workers to carry out.

Next, the operation of the trolley conveyor will be described. At the stop position shown in FIGS. 1 and 2, the rod 72 of the carriage stop mechanism 70 is extended to rotate the swing arm 7
The arm portion 73a of No. 3 is set to be able to intersect the locus of passage of the rod 41 of the bumper 40 and the contact plate 42. When the trolley | bogie 10 advances in this state, the contact plate 42 of the bumper 40 contacts the front-end | tip of the arm part 73a, ie, a detected part. Therefore, the rod 41 of the bumper 40 is retracted rearward against the biasing force of the coil spring 45, and in conjunction with this, the locking member 53 of the drive separation mechanism 50 rotates in the clockwise direction and the hook 55. And drive chain 6
The 0 pin 61 is disengaged and the carriage 10 stops.

When the predetermined work (assembly work, etc.) for the carriage 10 stopped at the stop position is completed, the fluid pressure cylinder 71 is operated to retract the rod 72, and the arm portion 73a of the swing arm 73 is The rod 41 on the side of the bumper 40 and the contact plate 42 are rotated so as to be retracted out of the path of passage. When the arm portion 73a retracts, the rod 41 is biased by the coil spring 45 and projects forward,
The locking member 53 rotates counterclockwise to move the hook 5
When the hook 55 and the pin 61 are engaged with each other, the carriage 5 is pulled by the drive chain 60 and the carriage 10 moves forward. After the trolley 10 advances in this way, the fluid pressure cylinder 71 is operated again to cause the rod 72 to project, and the arm portion 73a of the turning arm 73 is moved to the rod 41 of the bumper 40.
By setting the position so as to intersect with the passing locus of the contact plate 42, the succeeding vehicle 10 can be stopped at the stop position again.

When the carriage 10 towed by the drive chain 60 approaches the preceding carriage 10, the vertical bracket 18 of the rear bracket 17 provided so as to project rearward from the rear frame 13 of the preceding carriage 10. Comes into contact with the bumper 40 of the truck 10 that follows. That is, the contact plate 42 provided at the tip of the rod 41 of the bumper 40 contacts the vertical contact plate 18, and in this case also, the rod 41 retracts rearward. As a result, as in the case described above, the locking member 53 of the drive separation mechanism 50 rotates to release the engagement between the hook 55 and the pin 61 of the drive chain 60, and the succeeding carriage 10 can be stopped. .

Further, even if there is an operator in front of the moving carriage 10 for some reason, the movement of the carriage 10 can be stopped. That is, the contact plate 4 of the bumper 40
This is because the rod 41 retracts rearward when 2 contacts the worker. In the illustrated embodiment, the contact plate 42 has a size substantially equal to the diameter of the rod 41. However, a larger contact plate should be used in consideration of the retracted position of the swing arm 73 on the side of the carriage stop mechanism 70. You can also

In this way, the bumper 40 has the rod 41
Of the tip and the contact plate 42 on the platform 20,
Since it is configured so as to project directly below and to the front of the frame body 15,
Not only the existence of the swing arm 73 of the carriage stopping mechanism 70,
It has a function of detecting the presence of the preceding trolley 10 and the presence of an operator, etc., and constitutes an obstacle detecting means. As a result, the carriage 10 can be advanced with high safety.

As a means for detecting the carriage 10 stopped at the stop position, as shown in the figure, the platform 20
It is possible to install the sensor 80 on the side and to provide the detected member 81 for the sensor 80 on the side of the carriage 10.
As the sensor 80 and the detected member 81, a normal sensor technique such as a proximity switch or a photo coupler can be used. Further, the sensor 80 stops the carriage 10 at a predetermined position, when the predetermined work is completed, and the swivel arm 73 is retracted to advance the carriage 10, the sensor 80 does not detect the detected member 81, that is, When it is confirmed that the carriage 10 has moved forward from the predetermined position, the fluid pressure cylinder 71 is operated to move the swing arm 73 to the bumper 40.
It can be returned to a position that intersects the passage locus of.

Further, the sensor 8 provided in this way
A bogie fixed position stopper 90 that operates using the 0 signal can be installed. As shown in FIG. 4, the bogie fixed position stopper 90 is provided with a plate 92 that is moved up and down by the fluid pressure cylinder 91 on the platform 20 side, and a protrusion 93 having a triangular cross section is provided on the surface of the plate 92 to advance the bogie 10. An example in which a plate 94 is installed on the lower surface on the frame 15 side so as to be able to face the plate 92 and a triangular recess 95 is formed on the lower surface of the plate 94 while being formed at right angles to the direction . By receiving the signal from the sensor 80, the plate 92 is raised, and the protrusion 93 is fitted into the triangular recess 95, whereby the carriage 10 can be stopped at a fixed position.

In the above, an example is shown in which the recess and the protrusion are provided on the trolley side and the platform side, respectively. The trolley is fixed at a fixed position by engaging and disengaging the recess and the protrusion in this way. Can be stopped accurately.
The fitting and the disengagement can be performed by using an appropriate driving means, and the dismounting of the two does not hinder the movement of the carriage. It can be appropriately determined whether the concave portion or the protruding portion is provided on the trolley side or the platform side. Either the concave portion or the protruding portion may be moved in order to perform the fitting and the releasing, or both of them may be moved. You can also Further, as in the above example, if one or both of the side surfaces on the front and rear sides in the traveling direction of the concave portion and the protruding portion are formed as inclined surfaces, even when the positions of the both are slightly displaced, the concave portion and the protruding portion are projected along the inclined surface. The dolly moves so that the parts fit together, and the stop position of the dolly can be finely adjusted.

[0039]

As described above, according to the trolley conveyor of the present invention, the trolley guide rail and the trolley guide are installed laterally offset with respect to the driving force transmission / interruption means. Since it is configured, the height of the entire carriage conveyor can be kept low. As a result, there is no need to dig a groove on the installation floor surface, and it is possible to cope with relocation.

Further, since the obstacle detecting means is provided so as to project to the front of the dolly, it is possible to detect the preceding dolly and an obstacle such as a worker in front of the dolly accurately, and to secure safety. It is effective.

Further, since the carriage stopping mechanism having the detected portion which can be detected by the obstacle detecting means is provided, the carriage can be stopped by using the obstacle detecting means.

[Brief description of drawings]

FIG. 1 is an enlarged front view showing a main part of a trolley conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view showing the main part of the trolley conveyor.

FIG. 3 is an enlarged side view of a drive chain and a drive separating mechanism of the truck conveyor.

FIG. 4 is a sectional view showing an example of a fixed position stop stopper of the carriage conveyor in the same manner.

FIG. 5 is a side view illustrating a configuration of a conventional trolley conveyor.

FIG. 6 is a front view for explaining the structure of a conventional trolley conveyor.

FIG. 7 is a side view showing a state where the engagement between the drive chain and the locking member of the conventional truck conveyor is released.

[Explanation of symbols]

10 carts 12 front frame 13 rear frame 14 side frame 15 frame 16 wheels 17 Rear bracket 18 Vertical plate 20 platforms 21 trolley guide rail 30 guide rod 31 trolley guide 40 bumper 41 rod 42 Plate 43 L type bracket 44 Cylindrical bearing 45 coil spring 50 Drive separation mechanism 51 L type arm plate 52 axes 53 Locking member 54 pin 55 hook 60 drive chain 61 pin 62 chain guide rails 70 bogie stop mechanism 71 Fluid pressure cylinder 72 Rod 73 swivel arm 73a arm part 74 Rotating plate 75 axes 76 rising board 80 sensor 81 Detected member 90 fixed position stopper 91 Fluid pressure cylinder 92 plates 93 Projection 94 plates 95 triangular recess

Claims (8)

[Claims] 1. A platform having a predetermined track, a drive chain located on the platform side and driven along the platform, a carriage movable on the platform, the carriage and the drive chain. And a driving force transmitting / disconnecting means for transmitting the driving force of the drive chain to the truck and canceling the transmission, and the truck is arranged on the platform side to move the truck along the platform. And a trolley guide rail provided on the trolley so as to be located between the trolley guide rail and the trolley, and guided by the trolley guide rail. And the carriage guide is located on the side of the drive force transmission / interruption means. Nvea. 2. The cart is provided with an obstacle detecting means projecting forward, and the obstacle detecting means releases the transmission of the driving force by the driving force transmitting / disconnecting means in accordance with the detection of the obstacle. The trolley conveyor according to claim 1, wherein the trolley conveyor is controlled as follows. 3. A trolley stop mechanism is provided at a predetermined position of the platform, and the trolley stop mechanism is a detected part capable of moving in and out of a passage path of the obstacle detection means, and the detected part. 3. The trolley conveyor according to claim 2, further comprising: a detection target drive means for moving the. 4. The bogie stop mechanism has a turning arm whose central portion is pivotally stopped, the detected portion is provided on one end side of the turning arm, and the turning arm is rotated on the other end side. 4. The trolley conveyor according to claim 3, wherein the detected part driving means is connected. 5. The obstacle detecting means includes a rod urged forward by the elastic member in the traveling direction of the trolley, and a contact plate attached to the tip of the rod. The end of the rod and the contact plate are provided. The trolley conveyor according to any one of claims 2 to 4, wherein the trolley conveyor is projected forward of the trolley. 6. The trolley conveyor according to claim 5, wherein the drive force transmission / interruption means has a drive force separation mechanism that releases the transmission of the drive force as the rod moves backward. 7. The rod has one end of a locking member of a drive separation mechanism connected to the rod, and the locking member is axially fixed at another portion, so that the locking member rotates in conjunction with forward and backward movement of the rod. 7. The trolley conveyor according to claim 6, wherein the trolley conveyor is configured to move, and the hook formed on the locking member is disengaged from the drive chain by rotating the locking member. 8. A rear bracket, which can be detected by an obstacle detecting means of the succeeding carriage by approaching the succeeding carriage, is provided behind the carriage.
The bogie conveyor according to any one of to 7.