JP4625782B2 - Dolly moving device - Google Patents

Description

  The present invention relates to a carriage moving device capable of operating a rotational force utilization means by using a drive source that moves a moving carriage.

  Conventionally, when conveying means such as a conveyor is arranged on a moving carriage, and a workpiece such as a component, product or pallet placed on the conveying means is conveyed by the moving carriage and further conveyed by the conveying means. A drive source such as a motor for driving the movable carriage and a drive source such as a motor for driving the conveying means are used. That is, a drive source is provided for each operation.

For example, in the automatic cart apparatus of patent document 1, the cart is provided with a cart motor for driving the cart, and the cart is driven by the motor. Moreover, the conveyor driven by the motor for conveyors is provided on the trolley | bogie, and it has comprised so that the workpiece | work conveyed with the trolley | bogie may be further conveyed with a conveyor.
Furthermore, in Patent Document 1, in order to prevent the power supply cable for supplying power to the cart motor and the conveyor motor from obstructing traffic, the device is accommodated in the floor surface. ing.

  However, in the structure of the conventional mobile carriage, only one operation can be performed by the power of one drive source. Therefore, for example, in order to perform movement of the carriage and other operations other than this movement, it is necessary to use two drive sources. This is a factor that increases the equipment cost and also increases the power consumption of the equipment.

  In addition, when the drive source is disposed on the mobile carriage, it is necessary to devise a power cable for supplying power to the drive source. For this reason, it is necessary to store the power cable on the floor as in Patent Document 1 or to place the power cable above or on the ceiling of the moving carriage. This becomes a factor that complicates or enlarges the configuration of the facility, and further increases the facility cost.

JP 2000-168548 A

  The present invention has been made in view of the above-described conventional problems, and the moving operation of the moving carriage and the operation using the rotational force utilization means can be performed by the power of one driving source, and the electric power is supplied to the moving carriage. It is an object of the present invention to provide a cart moving device that can operate a rotational force using means without directly supplying it.

The present invention includes a movable carriage capable of moving along a movement route,
A linear carriage pulling member disposed along the movement path and partially engaged with the movement carriage;
A drive source disposed on the movement path and for running the carriage pulling member;
Movement stop means for stopping the movement of the mobile carriage,
The movable carriage engages with the carriage pulling member and can rotate according to the running of the carriage pulling member, and a rotation limiting means for limiting the rotation of the rotation force generating member; A rotational force utilization means that operates using the rotational force generated by the rotational force generating member,
By limiting the rotation of the rotational force generating member by the rotation limiting means, the traveling force of the carriage pulling member is converted into the movement force of the movable carriage, and the movable carriage is moved. When the movement of the movable carriage is stopped by the movement stop means, the rotational force generating member is rotated according to the traveling of the carriage pulling member, and the rotational force using means is activated. (1).

The carriage moving device of the present invention is configured to run a carriage pulling member by a drive source, and to use the carriage pulling member to perform a moving operation of the moving carriage and an operation using a rotational force utilization means.
Specifically, in the present invention, when the movement of the movable carriage is not stopped by the movement stopping means, the rotation of the rotational force generating member is restricted by the rotation restricting means. Therefore, the traveling force that causes the drive source to travel the carriage pulling member is converted into the movement force that moves the movable carriage. Thereby, the motive power by a drive source can be transmitted to a movable trolley via a trolley pulling member, and this movable trolley can be moved.

  On the other hand, when the movement of the moving carriage is stopped by the movement stopping means, the driving force that causes the driving source to run the carriage pulling member is not converted to the moving force of the moving carriage, but is converted to the rotational force that rotates the rotational force generating member. Is done. Thereby, the motive power by a drive source can be transmitted to a rotational force utilization means via a cart pulling member and a rotational force generation member, and this rotational force utilization means can be operated.

  In this way, the rotational force utilization means disposed on the movable carriage can operate by receiving power from the drive source via the carriage pulling member and the rotational force generating member. Therefore, the rotational force utilization means can be operated without directly supplying power to the mobile carriage. Thereby, a rotational force utilization means can be operated, without wiring an electric power cable to a mobile trolley | bogie.

  Therefore, according to the cart moving apparatus of the present invention, the moving operation of the moving cart and the operation using the rotational force utilization means can be performed by the power of one drive source, and power is directly supplied to the moving cart. Without this, the rotational force utilization means can be operated.

A preferred embodiment of the present invention described above will be described.
In the present invention, when the movement of the moving carriage is not stopped by the movement stopping means, the trolley moving device is configured such that the power torque applied from the carriage pulling member to the rotational force generating member is changed from the rotation limiting means to the rotation. When the moving carriage moves and the movement of the moving carriage is stopped by the movement stop means, the power torque applied from the carriage pulling member to the rotational force generating member is smaller than the load torque applied to the force generating member. However, it is preferable that the rotational force generating member is configured to rotate by being larger than a load torque applied to the rotational force generating member from the rotation limiting means.

  In this case, depending on the magnitude relationship between the power torque applied to the rotational force generating member from the carriage pulling member and the load torque applied to the rotational force generating member from the rotation limiting means, the moving operation of the movable carriage and the operation by the rotational force utilizing means are performed. And can be switched. Therefore, it is possible to easily switch between the movement operation of the moving carriage and the operation by the rotational force utilization means by using the stop operation by the movement stop means.

  The movable carriage is configured to reciprocate along the movement path, the carriage pulling member is flexible and arranged in a loop shape, and the driving source is configured to move the carriage pulling member to the A drive motor that performs a forward rotation that travels in one direction on the movement path and a reverse rotation that travels the carriage pulling member in the other direction on the movement path; An idling member that is in rotational contact with the cart pulling member is disposed on each of the direction side and the other direction side, and the cart pulling member includes one idling member, the torque generating member, and the other idling member. It is preferable that the belt is sequentially wound around the idling member.

  In this case, the carriage pulling member travels in one direction by rotating the drive motor forward. At this time, when the movement of the moving carriage is not stopped by the movement stopping means, the moving carriage can move in one direction on the movement path. At this time, when the movement of the movable carriage is stopped by the movement stop means, the rotational force generating member can be rotated in one rotational direction to operate the rotational force utilization means.

  Further, the carriage pulling member travels in the other direction by rotating the drive motor in the reverse direction. At this time, when the movement of the moving carriage is not stopped by the movement stopping means, the moving carriage can move in the other direction on the movement route. At this time, when the movement of the moving carriage is stopped by the movement stop means, the rotational force generating member can be rotated in the other rotational direction to operate the rotational force utilization means.

In addition, since the carriage pulling member is arranged in a loop shape, the rotation direction of the drive motor can be switched between forward rotation and reverse rotation, and the movable carriage can be reciprocated in one direction and the other direction in the movement path. Easy.
In addition, a pair of idling members is provided on the movable carriage, and the cart pulling member is sequentially passed over one idling member, a rotational force generating member, and the other idling member, thereby moving through the cart pulling member. When the carriage is moved, the force (pulling force) that causes the drive source to travel the carriage pulling member does not directly act only on the rotational force generating member, but acts on the entire idling member and rotational force generating member. it can. Therefore, it is easy to convert the traveling force of the carriage pulling member into the movement force of the movable carriage, and the movable carriage can be easily moved.

The rotational force generating member is a rotational force transmission wheel, the pair of idle rotation members is a pair of idle rotation driven vehicles, and the carriage pulling member is between the rotational force transmission vehicle and the pair of idle rotation driven vehicles. It is preferable that they are stretched between them in a state of being sandwiched between them (claim 4).
In this case, the carriage pulling member can be pressed against the torque transmission wheel by the pair of idle driven vehicles, and the torque from the drive source can be easily transmitted from the carriage pulling member to the torque transmission wheel.

The rotational force transmission wheel and the pair of idling driven vehicles are arranged in a state of forming a virtual isosceles triangle, and the rotational force transmission wheel is located at a position where the apex angle of the isosceles triangle is formed. It is preferable that each idling driven vehicle is disposed at a position where the base angle of the isosceles triangle is formed (Claim 5).
In this case, the positional relationship between the rotational force transmission vehicle and the pair of idling driven vehicles can be made more appropriate, and in particular, when the moving carriage is reciprocated on the movement path, it can be directed in any direction. The moving carriage can be moved stably.

The rotation limiting means may be configured to limit the rotation of the rotational force generating member by using a static friction force generated when the operation of the rotational force using means is started.
In this case, the rotation of the rotational force generating member can be limited without using parts other than the rotational force utilization means such as a torque keeper as the rotational restriction means. Therefore, the rotational force limiting means can be easily configured. Further, the rotation restricting means using the static friction force generated in the rotational force utilization means is particularly effective when the static friction force generated in the rotational force utilization means is larger than the force necessary for starting the movement of the movable carriage. .

  Further, the rotation limiting means is configured using a torque keeper, and the torque keeper includes a rotating part connected to the rotational force generating member, a holding part holding the rotating part, and rotation of the rotating part. And a rotation restricting portion that enables rotation of the rotating portion when the rotational torque applied to the rotating portion reaches a predetermined value or more (claim 7).

  In this case, the rotation of the rotational force generating member can be limited using a torque keeper. The torque keeper as the rotation restricting unit releases the restriction on the rotation of the rotational force generating member when the rotational torque applied from the carriage pulling member to the rotational force generating member becomes a predetermined value or more. Thereby, a rotational force generation | occurrence | production member can be rotated and a rotational force utilization means can be operated. Note that when the movement of the movable carriage is stopped by the movement stop means, the rotational torque applied to the rotational force generating member from the carriage pulling member becomes a predetermined value or more.

  Further, the rotational force utilization means is configured by using a plurality of power transmission wheels that rotate by receiving rotational force from the rotational force generation member, and the rotation restriction means includes the rotational force generation member and the plurality of rotational power generation wheels. In the combination of the power transmission wheels, it is also possible to limit the rotation of the rotational force generating member using a torque transmission ratio determined by the size of the radius from the rotation center to the power transmission position ( Claim 8).

  In this case, the torque limiting means can be easily configured by limiting the rotation of the torque generating member by using the torque transmission ratio in the combination of the torque generating member and the plurality of power transmission vehicles. . Further, in this case, the rotation limiting means can be configured by using both the static friction force generated in the torque utilization means and the torque transmission ratio in the combination of the torque generation member and the plurality of power transmission vehicles. .

Moreover, the said rotational force utilization means can be made into the conveyance conveyor which receives the rotational force of the said rotational force generation member, and conveys the workpiece | work mounted on the said mobile trolley | bogie (Claim 9).
In this case, the workpiece placed on the movable carriage is moved by the movement of the movable carriage, and when the rotational force generating member rotates, the conveyor is operated as the rotational force utilization means to move the workpiece. It can be sent out from the carriage to another frame or other conveyor. The work includes various parts, products, pallets and the like.

The conveyor may be configured to rotate a plurality of conveyor rollers connected to the rotational force generating member via a power transmission member to convey the work placed on the conveyor rollers. Preferred (claim 10).
In this case, when the rotational force generating member rotates, the workpieces placed on the plurality of transport rollers can be easily sent out from the moving carriage to another frame or another conveyor.

Moreover, the said rotational force utilization means can be set as the various mechanisms using the rotational force which arises by the said rotational force generation member besides the said conveyor.
For example, the rotational force using means may be a mechanism that uses a rotational force generated by a rotational force generating member to raise and lower a table on which the workpiece is placed, and deliver the workpiece.

The movement stopping means may be configured by stoppers disposed at both ends of the movement path, and may be configured to stop the movement of the moving carriage by causing the moving carriage to collide with the stopper. Preferred (claim 11).
In this case, the configuration of the movement stopping means is simple, and when the moving carriage is reciprocated along the movement path, the movement carriage can be easily stopped at one end in the movement path and the other direction end. it can.

Further, the stopper can be constituted not only by a fixed mechanical stopper but also by using a shock absorber or the like configured to absorb energy at the time of collision.
Further, the movement stopping means may be an actuator such as a cylinder provided in the moving path of the moving carriage, and the movement of the moving carriage can be stopped at a predetermined position by operating this actuator.

Moreover, the said mobile trolley | bogie can be comprised so that it may move by rolling a some wheel (Claim 12).
In this case, it is possible to easily reduce the movement resistance of the moving carriage (the force necessary to start the movement of the moving carriage).

Further, the moving carriage can be configured to move using a slide guide configured to slide the slider by rolling contact with the rail via a large number of ball bearings.
Also in this case, the movement resistance of the moving carriage (the force necessary to start the movement of the moving carriage) can be easily reduced.

The carriage pulling member may be a belt, a toothed belt, a chain, or a wire, and the rotational force generating member may be a pulley, a gear, or a sprocket that engages with the carriage pulling member.
In this case, the cart pulling member and the rotational force generating member can be easily selected.
When the cart pulling member is a belt or a wire, the rotational force generating member can be a pulley that engages with the belt or the wire. When the cart pulling member is a toothed belt, the rotational force generating member can be a gear or a toothed pulley that engages with the toothed belt. When the cart pulling member is a chain, the rotational force generating member can be a sprocket that engages with the chain.

Hereinafter, embodiments of the cart moving apparatus of the present invention will be described with reference to the drawings.
Example 1
As shown in FIGS. 1 to 3, the cart moving apparatus 1 of the present example includes a moving cart 4 that can move along a moving route D set on the floor, and a moving cart 4 that is disposed along the moving route D and part of the moving cart 4. A linear carriage pulling member 35 engaged with the vehicle, a drive source 3 that is disposed at the end of the movement path D and travels the carriage pulling member 35, and a movement stop means 23 that stops the movement of the movement carriage 4. have.

As shown in FIG. 2, the movable carriage 4 is engaged with the carriage pulling member 35 and can be rotated in accordance with the traveling of the carriage pulling member 35. Rotation limiting means 50 for limiting the rotation of 51 and rotational force utilization means 6 that operates using the rotational force generated by the rotational force generating member 51.
The carriage moving device 1 moves the moving carriage 4 by converting the running force of the carriage pulling member 35 into the moving force of the moving carriage 4 by restricting the rotation of the rotational force generating member 51 by the rotation restricting means 50. It is configured to make it. Further, when the movement of the movable carriage 4 is stopped by the movement stop means 23, the carriage moving device 1 rotates the rotational force generating member 51 according to the traveling of the carriage pulling member 35, and the rotational force utilization means 6 is activated. It is configured as follows.

Hereinafter, the cart moving device 1 of this example will be described in detail with reference to FIGS.
As shown in FIGS. 1 and 2, the cart moving apparatus 1 of this example travels a cart pulling member 35 by a driving source 3, and uses the cart pulling member 35 to move and use the rotational force of the moving cart 4. The operation by means 6 is performed.
In addition, the moving carriage 4 of this example is configured to convey a workpiece 8 such as a component, product, or pallet placed on the moving carriage 4. A traverser configured to carry.

As shown in FIGS. 2 and 3, the moving carriage 4 of this example is configured to reciprocate repeatedly in one direction D1 and another direction D2 of the moving path D. Further, the drive source 3 of this example is configured using a drive motor 31 capable of rotating both forward and reverse.
Moreover, the cart moving apparatus 1 of this example is configured to control operations by a control device using a computer such as a sequencer.

Further, as shown in FIG. 1, detection switches 24 for detecting the arrival of the mobile carriage 4 are disposed at both ends of the movement route D in this example. The control device is configured to receive a signal from the detection switch 24 that detects the arrival of the mobile carriage 4 and wait for a predetermined time, and then reverse the rotation direction of the drive motor 31. Thus, in the cart moving apparatus 1 of this example, the moving cart 4 is reciprocated on the moving path D by controlling the forward / reverse rotation of the drive motor 31 by the control device.
The detection switch 24 of this example is a limit switch that contacts the detection dog provided on the movable carriage 4 and detects the arrival of the movable carriage 4. In addition to this, the detection switch 24 may be a proximity switch that detects the arrival of the movable carriage 4 in a non-contact manner.

As shown in FIGS. 1 and 4, a drive motor 31 is disposed at one end of the moving path D of this example, and a drive for passing a carriage pulling member 35 to the output shaft of the drive motor 31. A member 311 is provided. In addition, a tension bracket 32 is provided at the other end in the movement path D of the floor plate portion 2. The tension member 32 is provided with a driven member 321 that spans the carriage pulling member 35 so as to be driven to rotate. By adjusting the position of the tension bracket 32, the tension of the carriage pulling member 35 can be adjusted.
The tension bracket 32 can be disposed on a movable portion of an air cylinder disposed on the floor plate portion 2, and the tension of the carriage pulling member 35 can be stably generated by the thrust of the air cylinder. it can.

As shown in FIGS. 1 and 4, the cart pulling member 35 of this example has flexibility, and is arranged in a loop shape in the floor plate portion 2.
The cart pulling member 35 of this example is a wire formed by twisting a plurality of steel wires. The rotational force generating member (rotational force transmitting wheel) 51, the driving member 311 and the driven member 321 that are engaged with the carriage pulling member 35 are all pulleys.
In addition to the wire, the carriage pulling member 35 may be a toothed belt formed by forming a tooth surface on one surface of the belt, for example. In this case, the rotational force generating member 51, the driving member 311 and the driven member 321 that engage with the carriage pulling member 35 can all be toothed pulleys.

As shown in FIGS. 1 and 5, the movement route D of the present example is formed in the floor plate portion 2 serving as a movement base when the movable carriage 4 is moved. On the floor plate portion 2, a linear cart movement guide 21 is formed by a pair of guide bars 211, and floor covers 22 are disposed on both sides in the cross-sectional direction of the cart movement guide 21.
In addition, a plurality of carriage guide rollers 44 are arranged below the moving carriage 4 in the formation direction of the movement path D, and the carriage guide rollers 44 are provided for the pair of guide bars 211 in the carriage movement guide 21. It is arranged between. Then, the cart 4 can be moved along the movement path D by guiding the cart guide roller 44 by the cart movement guide 21.

Further, in this example, as shown in FIG. 5, by forming the floor cover 22 to be inclined, an extreme step is prevented from being generated on the floor plate portion 2, and the floor plate portion 2 in the cart moving device 1 is Workers or other carts can be crossed.
Further, the cart guide roller 44, the cart pulling member 35 (both the feed side portion 351 and the return side portion 352 are both in a loop shape), the drive member 311, the driven member 321 and the like are disposed inside the floor cover 22. It is arranged.
The floor plate portion 2 is disposed on a grooved pit formed by digging down the floor of the factory, and the carriage guide roller 44, the carriage pulling member 35, the driving member 311, the driven member 321 and the like are provided in the grooved pit. It can also be arranged inside.

As shown in FIGS. 1 and 4, the movement stopping means 23 of the present example is configured by stoppers 231 provided at both ends of the movement path D in the floor board 2. Then, the movement of the movable carriage 4 in this example is stopped by colliding with the movement stop means 23.
A shock absorber or the like configured to absorb energy when the moving carriage 4 collides with the stopper 231 can be disposed at both ends of the moving path D.

As shown in FIGS. 1 to 3, the movable carriage 4 of the present example is configured to carry the workpiece 8 placed on the movable carriage 4. The movable carriage 4 is provided with a plurality of (four in this example) wheels 42 via wheel bearings 421 at the bottom of the carriage base 41, and moves by rolling the plurality of wheels 42. It is configured.
In addition, although illustration is abbreviate | omitted, the mobile trolley | bogie 4 can also be comprised so that it may move using a slide guide, and a slide guide slides a slider by rolling contact via many ball bearings with respect to a rail. It can be configured.

  Further, as shown in FIG. 4, the carriage base 41 in the movable carriage 4 includes an idling member (idling follower) 43 that is in rotational contact with the carriage pulling member 35 in one direction D1 side and the other direction D2 side with respect to the movement path D. Are arranged respectively. The idling member 43 is disposed on one side D1 side and the other direction D2 side with respect to the movement path D with the rotational force generating member 51 interposed therebetween. The idling member 43 of this example is configured by a roller configured to rotate by rolling contact via a plurality of rollers, and is supported by a support shaft 431 at the lower end of a bracket 46 fixed to the lower portion of the carriage rack 41. .

Further, in this example, in order to easily convert the traveling force of the carriage pulling member 35 into the movement force of the movable carriage 4, the carriage pulling member 35 includes one idling member 43 and a rotational force generating member 51. And the other idling member 43. Further, in this example, since the carriage pulling member 35 is pressed against the rotational force generating member 51 by the pair of idling members 43, the carriage pulling member 35 is interposed between the rotational force generating member 51 and the pair of idling members 43. In a state of being sandwiched, the rotational force generating member 51 and the pair of idling members 43 are spanned.
Further, in this example, the disposition position of the pair of idling members 43 and the disposition position of the rotational force generating member 51 are shifted from each other in the lateral direction with respect to the formation direction of the movement path D. The outer periphery of the pair of idling members 43 and the outer periphery of the rotational force generating member 51 are meandered and stretched.

More specifically, as shown in FIG. 4, the rotational force generating member 51 of this example is disposed between the pair of idling members 43 in the formation direction of the movement path D. Further, the pair of idling members 43 is disposed at a position where it engages with a cart pulling member 35 arranged on the floor plate portion 2 in the lower part of the movable carriage 4 (lower part of the carriage rack 41). The rotational force generating member 51 of this example is disposed at a position higher than the height direction position of the pair of idling members 43. Then, by arranging the rotational force generating member 51 at a high position with respect to the pair of idling members 43, the carriage pulling member 35 is provided with a mountain shape at a portion engaging with the movable carriage 4. It is.
Further, the rotational force generating member 51 and the pair of idling members 43 are arranged in a state of forming a virtual isosceles triangle. The rotational force generating member 51 is disposed at a position that forms an apex angle of an isosceles triangle, and each idling member 43 is disposed at a position that forms a base angle of the isosceles triangle.

As shown in FIGS. 2 and 4, the rotational force generating member 51 of this example is fixed to a rotating shaft 52 that is rotatably supported by a bearing 521 that is disposed on the carriage base 41.
Further, the rotational force utilization means 6 of this example is a transport conveyor 6 that receives the rotational force of the rotational force generating member 51 and transports the workpiece 8 placed on the movable carriage 4. The conveyor 6 is arranged at the upper part of the movable carriage 4, and the rotational power is transmitted from the rotational force generating member 51 and the workpiece conveying unit having a plurality of conveying rollers 65 for conveying the workpiece 8. Power transmission unit.

  The workpiece conveying section is configured by arranging a plurality of conveying rollers 65 in rotational contact with the workpiece 8 on a plurality of conveyor shafts 64, and rotating and supporting each conveyor shaft 64 by a pair of conveyor bearings 63. Further, a collar portion for preventing the lateral displacement of the work 8 when the work 8 is transported by the transport conveyor 6 is formed on the entire circumference of the outer corner of the transport roller 65 of this example.

The power transmission unit includes a main shaft 53 to which rotational power is transmitted from the rotational force generating member 51, a first power transmission wheel 61A fixed to the main shaft 53, and a second power transmission wheel fixed to the conveyor shaft 64. 61B, a linear first coupling member 62A that couples the first power transmission wheel 61A and the second power transmission wheel 61B, and a linear second coupling member 62B that couples the second power transmission wheels 61B to each other. Have.
The first power transmission wheel 61A and the second power transmission wheel 61B in this example are pulleys, and the first connection member 62A and the second connection member 62B are belts that engage with the outer periphery of the pulley. The first power transmission wheel 61A, the second power transmission wheel 61B, the first connection member 62A, and the second connection member 62B all function as power transmission members.

As shown in FIGS. 2 and 4, bevel gears 54 that mesh with each other at right angles to each other are disposed at one end of the rotating shaft 52 and one end of the main shaft 53.
As shown in FIGS. 2 and 3, when the rotational force generating member 51 rotates, the rotating shaft 52 rotates, and the main shaft 53 rotates due to the engagement of the pair of bevel gears 54. Simultaneously with the rotation of the main shaft 53, the first power transmission wheel 61A rotates, and the power is transmitted by the first connecting member 62A and the second connecting member 62B to rotate the second power transmission wheel 61B. As a result, the plurality of conveyor shafts 64 and the transport rollers 65 rotate, and the work 8 placed on the transport rollers 65 is sent from the moving carriage 4 in a direction orthogonal to the movement path D, or orthogonal to the movement path D. The workpiece 8 can be received on the conveying roller 65 from the direction.

  When the delivery direction E of the workpiece 8 on the conveyor 6 is the same as the traveling direction of the conveyor carriage 2, the rotational force generating member 51 and the first power transmission wheel 61A are connected without the bevel gear 54 interposed therebetween. can do.

  The cart moving apparatus 1 of this example is configured to move the moving cart 4 based on the magnitude relationship between the power torque applied to the rotational force generating member 51 from the cart pulling member 35 and the load torque applied to the rotational force generating member 51 from the rotation limiting means 50. The operation and the operation by the rotational force using means 6 are switched.

  That is, in the cart moving apparatus 1 of this example, when the movement of the moving cart 4 is not stopped by the movement stopping means 23, the power torque applied to the rotational force generating member 51 from the driving source 3 via the cart pulling member 35 is The moving carriage 4 is configured to move by being smaller than the load torque applied to the rotational force generating member 51 from the rotation limiting means 50. Further, when the movement of the movable carriage 4 is stopped by the movement stop means 23, the carriage moving device 1 is configured such that the power torque applied to the rotational force generating member 51 from the drive source 3 via the carriage pulling member 35 is reduced by the rotation limiting means 50. The rotational force generating member 51 rotates and the operation by the rotational force using means 6 is performed when the torque becomes larger than the load torque applied to the rotational force generating member 51.

  As shown in FIGS. 2 and 3, the rotation limiting means 50 of this example is configured to limit the rotation of the rotational force generating member 51 by using the static friction force generated when the operation of the rotational force using means 6 is started. It is. That is, in the cart moving apparatus 1 of this example, when the cart pulling member 35 tries to rotate the torque generating member 51, the rotation resistance that is a static friction force generated in the torque utilization means 6 is reduced by the cart pulling member 35. It is larger than the movement resistance which is a force (static friction force) necessary for starting the movement of the movable carriage 4.

Therefore, when the movable carriage 4 is moved from any end in the movement path D to the opposite end (when the movement of the movable carriage 4 is not stopped by the movement stopping means 23), the rotational resistance is By being larger than the moving resistance, the rotational force generating member 51 hardly rotates, and the driving force that causes the drive motor 31 to travel the carriage pulling member 35 is converted into the moving force that moves the movable carriage 4, The movable carriage 4 can be moved.
Further, in this example, since the rotational resistance is larger than the movement resistance, the driving force that causes the drive motor 31 to travel the carriage pulling member 35 becomes the force that pulls the movement carriage 4, and the movement carriage 4 is Can be moved.

  The movement resistance of the moving carriage 4 can be regarded as a resistance force determined by the gravity of the moving carriage 4 and the coefficient of static friction when the movement of the moving carriage 4 is started. On the other hand, the rotational resistance of the rotational force limiting means is a resistance force determined by the inertial force generated in the rotational force generating member 51 and the rotational force using means 6 and the static friction coefficient in each part of the rotational force generating member 51 and the rotational force using means 6. Can be caught.

The rotation limiting means 50 is a combination of a rotational force generating member 51 and a plurality of power transmission wheels (in this example, a bevel gear 54, a first power transmission wheel 61A, and a second power transmission wheel 61B). The torque transmission ratio determined by the size of the radius from the power transmission position to the power transmission position can also be used.
The rotation limiting means 50 using this torque transmission ratio is, for example, when transmitting power from a small power transmission vehicle having a radius of A to a large power transmission vehicle having a radius of two times A. Can be configured by utilizing the necessity. Examples of power transmission wheels include gears, pulleys, sprockets, and the like.

Further, as shown in FIG. 6, the rotation limiting means 50 can be constituted by a torque keeper 55 disposed on the rotary shaft 52, the main shaft 53, or the like.
The torque keeper 55 includes a rotating portion 551 connected to the rotational force generating member 51, a holding portion 552 that holds the rotating portion 551, and a rotation limiting portion 553 that prevents the rotating portion 551 from rotating. Can do. The rotation restriction unit 553 is configured to allow the rotation unit 551 to rotate with respect to the holding unit 552 when the rotation torque applied to the rotation unit 551 becomes equal to or greater than a predetermined value. Further, the rotation limiting unit 553 can be configured by a disc spring or the like.

  Then, the rotation of the rotational force generating member 51 is limited by using the torque keeper 55, and the rotation applied to the rotational force generating member 51 from the cart pulling member 35 when the movement of the moving carriage 4 is stopped by the movement stopping means 23. The torque becomes equal to or greater than the predetermined value, and the torque keeper 55 can release the restriction on the rotation of the rotational force generating member 51.

  As shown in FIG. 1, the cart moving apparatus 1 of the present example uses the moving cart 4 to transfer a workpiece 8 received from another receiving conveyor 71 disposed adjacent to one end 201 in the moving path D. It conveys to the other edge part 202 in D, and it is comprised so that it may send out to the other delivery side conveyor 72 arrange | positioned adjacent to this other edge part 202. FIG.

  In addition, as shown in FIG. 2, the work 8 placed on the transport conveyor 6 when the mobile cart 4 is moving is transferred to the cart base 41 of the mobile cart 4 in the delivery direction of the work 8 on the transport conveyor 6. A fall prevention member 45 is arranged to prevent the fall to move to E. The fall prevention members 45 are disposed at both ends in the delivery direction E of the workpiece 8 on the transport conveyor 6, and when one fall prevention member 45 comes into contact with the receiving side conveyor 71 or the sending side conveyor 72, The fall prevention state is canceled, and the workpiece 8 can be delivered.

In addition, as described above, by configuring the transport conveyor 6 to operate using the rotational force generating member 51 and the carriage pulling member 35, a motor for operating the transport conveyor 6 is provided on the movable carriage 4. There is no power source. Further, no sensor or the like is provided on the movable carriage 4.
The movable carriage 4 is not wired with any electrical cable for sensors, but also with no electrical cable for sensors and no wiring.

The cart movement apparatus 1 of this example conveys the workpiece | work 8 by the movable cart 4 by controlling the forward / reverse rotation of the drive motor 31 as follows.
First, as shown in FIG. 2, in a state where the movable carriage 4 is at one end 201 in the movement path D, the control device rotates the drive motor 31 in the reverse direction for a predetermined time. At this time, the movable carriage 4 is prevented from moving in the other direction D2 by the stopper 231A disposed at one end 201 in the movement path D. Therefore, the power by the drive motor 31 is directly transmitted to the conveyor 6 as the rotational force utilization means 6 through the carriage pulling member 35 and the rotational force generating member 51.

  As shown in the figure, the driving force that causes the drive motor 31 to drive the carriage pulling member 35 in the other direction D2 in the movement path D is not converted into the movement force of the moving carriage 4, and the rotational force generating member 51 is moved. It is converted into a rotational force that rotates in the reverse rotation direction. As a result, in response to the reverse rotation of the drive motor 31, the rotational force generating member 51 rotates in the reverse rotation direction, and from the receiving side conveyor 71 adjacent to one end 201 in the movement path D, the conveyance conveyor in the movable carriage 4. Work 8 can be received on 6.

Next, the control device reversely rotates the drive motor 31 for a predetermined time, and then rotates the drive motor 31 forward. At this time, the rotation of the rotational force generating member 51 is limited by the rotation limiting means 50. Therefore, when the drive motor 31 rotates forward, the traveling force that causes the carriage pulling member 35 to travel in one direction D1 in the movement path D (the drive motor 31 directs the carriage pulling member 35 in one direction D1 in the movement path D). The pulling force) is converted into a moving force that moves the moving carriage 4 in one direction D1 in the moving path D.
As a result, as shown in FIG. 1, the power from the drive motor 31 is transmitted to the movable carriage 4 via the carriage pulling member 35, and the movable carriage 4 is pulled via the carriage pulling member 35 by the forward rotation of the drive motor 31. Thus, it can be moved toward one direction D1 in the movement route D.

Next, as shown in FIG. 3, when the moving carriage 4 moves to the other end 202 in the movement path D, the moving carriage 4 collides with a stopper 231 </ b> B disposed at the other end 202 in the movement path D, The movement of the movable carriage 4 is stopped. At this time, when the movement of the movable carriage 4 is blocked, the driving force that causes the drive motor 31 to travel the carriage pulling member 35 in one direction D1 in the movement path D is not converted into the movement force of the movable carriage 4. The rotational force generating member 51 is converted into a rotational force that rotates it in the positive rotational direction.
Then, in response to the forward rotation of the drive motor 31, the rotational force generating member 51 rotates in the forward rotation direction, and the delivery-side conveyor 72 adjacent to the other end 202 in the moving path D from the conveying conveyor 6 in the moving carriage 4. Work 8 can be sent to

Next, the control device rotates the drive motor 31 in the reverse direction after rotating the drive motor 31 in the forward direction for a predetermined time. At this time, since the rotation of the rotational force generating member 51 is restricted by the rotation restricting means 50, the movable carriage 4 is pulled via the carriage pulling member 35 by the reverse rotation of the drive motor 31 in the same manner as described above. Thus, it can be moved toward the other direction D2 in the movement route D.
Thereafter, in the same manner as described above, by repeating forward and reverse rotation of the drive motor 31, the work 8 received from the receiving conveyor 71 is transported by the movable carriage 4, and this work 8 is repeatedly sent to the sending conveyor 72. Can do.

  As described above, the transport conveyor 6 disposed on the movable carriage 4 can operate by receiving power from the drive motor 31 via the carriage pulling member 35 and the rotational force generating member 51. Therefore, the conveyor 6 can be operated without directly supplying power to the movable carriage 4. Thereby, the conveyor 6 can be operated without wiring the power cable to the movable carriage 4.

  Therefore, according to the cart moving apparatus 1 of this example, the moving operation of the moving cart 4 and the operation by the transfer conveyor 6 can be performed by the power of one drive source 3, and power is supplied to the moving cart 4. The conveying conveyor 6 can be operated without directly performing. And according to the trolley | bogie movement apparatus 1 of this example, the structure of an installation can be simplified and reduced in size, and an installation cost can be made cheap.

  Furthermore, in the cart moving apparatus 1 of this example, since it is not necessary to wire a power cable to the moving cart 4, it is not necessary to provide a cable guide or the like for holding the power cable in the moving cart 4. Therefore, the structure of the movable carriage 4 can be simplified, and there is no obstacle on the floor board portion 2 when the vehicle passes over the floor board portion 2. Therefore, an operator or another cart can pass across the cart moving device 1.

  Further, in the cart moving apparatus 1 of the present example, if an operator collides with the moving cart 4 that is moving, the traveling force of the cart pulling member 35 is converted into the rotating force of the torque generating member 51. The Therefore, the impact force applied to the worker at the time of a collision can be made extremely small, and the carriage moving device 1 is excellent in terms of safety. Further, in this case, even when the operator substitutes for the stopper 231 and the conveyor 6 is operated, the fall preventing member 45 can prevent the workpiece 8 from falling in the delivery direction E.

(Example 2)
In this example, another specific example of the cart moving apparatus 1 is shown.
As shown in FIGS. 7 to 9, the cart moving apparatus 1 </ b> A of this example can also be configured by disposing transport conveyors 6 in the upper and lower stages of the moving cart 4. In this case, the workpiece 8 can be delivered between the receiving-side conveyor 71 and the sending-side conveyor 72 by the upper and lower transport conveyors 6. Further, the transport roller 65 is constituted by a roller chain for a conveyor. Between the main shaft 53 and the conveyance roller 65, a power transmission wheel 61 and a connecting member 62 can be appropriately disposed to transmit power.

Further, as shown in FIG. 9, the pair of idling members 43 and the rotational force generating member 51 can be arranged in a state of being arranged along the forming direction of the movement path D. Then, the carriage pulling member 35 is meandering over one side of the outer periphery of the pair of idling members 43 and the other side of the outer periphery of the rotational force generating member 51, thereby crossing the direction perpendicular to the formation direction of the movement path D. It can arrange | position in the state bent in. Further, the cart pulling member 35 of this example is constituted by a chain, and the pair of idling members 43 and the rotational force generating member 51 are constituted by sprockets engaged with the chain.
Also in this example, other configurations are the same as those in the first embodiment, and the same functions and effects as those in the first embodiment can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective explanatory view showing a cart moving device in a state where a moving cart is moving in Example 1. The perspective explanatory view which shows the moving trolley in the state which rotational force utilization means (conveyance conveyor) operate | moves by rotation to the reverse rotation direction of the rotational force generation member in Example 1. FIG. The perspective explanatory view which shows the moving trolley in the state which rotational force utilization means (conveyance conveyor) operate | moves by rotation to the normal rotation direction of the rotational force generation member in Example 1. FIG. Explanatory drawing which shows the mobile trolley in the state seen from the direction orthogonal to a movement path | route in Example 1. FIG. Explanatory drawing which shows the mobile trolley in the state seen from the direction of the movement path | route in Example 1. FIG. Explanatory drawing which shows the other rotation limiting means in Example 1. FIG. Explanatory drawing which shows the mobile trolley in the state seen from the direction orthogonal to a movement path | route in Example 2. FIG. Explanatory drawing which shows the mobile trolley in the state seen from the direction of the movement path | route in Example 2. FIG. Explanatory drawing which shows the mobile trolley in the state seen from the upper direction in Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Carriage moving apparatus 2 Floor board part 23 Movement stop means 231 Stopper 3 Drive source 31 Drive motor 35 Carriage pulling member 4 Moving carriage 43 Idling member (idling driven vehicle)
50 Rotation limiting means 51 Rotational force generating member (rotational force transmission wheel)
6 Use of rotational force (conveyor)
65 Conveyance roller 8 Work D Movement path

Claims (14)

A movable carriage capable of moving along the movement path;
A linear carriage pulling member disposed along the movement path and partially engaged with the movement carriage;
A drive source disposed on the movement path and for running the carriage pulling member;
Movement stop means for stopping the movement of the mobile carriage,
The movable carriage engages with the carriage pulling member and can rotate according to the running of the carriage pulling member, and a rotation limiting means for limiting the rotation of the rotation force generating member; A rotational force utilization means that operates using the rotational force generated by the rotational force generating member,
By limiting the rotation of the rotational force generating member by the rotation limiting means, the traveling force of the carriage pulling member is converted into the movement force of the movable carriage, and the movable carriage is moved. When the movement of the movable carriage is stopped by the movement stop means, the rotational force generating member is rotated according to the traveling of the carriage pulling member, and the rotational force using means is activated. A cart moving device. 2. The power torque applied to the rotational force generating member from the carriage pulling member is applied to the rotational force generating member from the rotation restricting member when the movement of the movable carriage is not stopped by the movement stopping means. Due to being smaller than the load torque, the moving carriage moves,
When the movement of the moving carriage is stopped by the movement stopping means, the power torque applied from the carriage pulling member to the rotational force generating member is larger than the load torque applied from the rotation limiting means to the rotational force generating member. Accordingly, the cart moving device is configured such that the rotational force generating member rotates. In Claim 1 or 2, the above-mentioned mobile trolley is constituted so that it may reciprocate in the above-mentioned movement course,
The carriage pulling member has flexibility and is arranged in a loop shape,
The drive source includes a drive motor that performs forward rotation that causes the carriage pulling member to travel in one direction on the movement path and reverse rotation that causes the carriage pulling member to travel in the other direction on the movement path.
The moving carriage is provided with an idling member that is in rotational contact with the carriage pulling member on one direction side and the other direction side with respect to the moving path, respectively.
The carriage moving device, wherein the carriage pulling member is sequentially wound around one of the idling members, the rotational force generating member, and the other idling member. In Claim 3, the torque generation member is a torque transmission wheel, and the pair of idling members is a pair of idling driven vehicles,
The cart moving device characterized in that the cart pulling member is stretched in a state of being sandwiched between the rotational force transmitting vehicle and the pair of idling driven vehicles.   In claim 4, the rotational force transmission wheel and the pair of idling driven vehicles are positioned at the apex that forms the apex angle, and each idling driven vehicle is set at the apex that forms the base angle. A cart moving device characterized in that it is positioned so as to form a virtual isosceles triangle.   6. The rotation limiting means according to claim 1, wherein the rotation limiting means limits the rotation of the rotational force generating member by using a static friction force generated when the operation of the rotational force using means is started. A cart moving device characterized by that. In any one of Claims 1-6, the said rotation limiting means is comprised using the torque keeper,
The torque keeper has a rotating portion connected to the rotational force generating member, a holding portion that holds the rotating portion, a rotation torque applied to the rotating portion that is not less than a predetermined value while preventing the rotating portion from rotating. A cart moving device characterized by having a rotation restricting portion that sometimes enables rotation of the rotating portion. In any one of Claims 1-7, the said rotational force utilization means is comprised using the several power transmission wheel which receives and receives the rotational force from the said rotational force generation member,
The rotation restricting means utilizes the torque transmission ratio determined by the size of the radius from the rotation center to the power transmission position in the combination of the rotational force generating member and the plurality of power transmission wheels. A cart moving device configured to limit rotation of a force generating member.   In any 1 item | term of the Claims 1-8, the said rotational force utilization means receives the rotational force of the said rotational force generation member, and is a conveyance conveyor which conveys the workpiece | work mounted on the said mobile trolley | bogie. A cart moving device.   10. The conveyor according to claim 9, wherein the conveyor conveys the work placed on the conveyor roller by rotating a plurality of conveyor rollers connected to the rotational force generating member via a power transmission member. A cart moving device characterized by that.   The moving carriage according to any one of claims 3 to 10, wherein the movement stopping means is constituted by stoppers disposed at both ends of the moving path, and the moving carriage is caused to collide with the stopper. A cart moving device characterized in that the movement of the cart is stopped.   12. The cart moving apparatus according to claim 1, wherein the moving cart is configured to move by rolling a plurality of wheels.   The movable carriage according to any one of claims 1 to 11, wherein the movable carriage is configured to move using a slide guide configured to slide the slider by rolling contact via a plurality of ball bearings with respect to the rail. A cart moving device characterized by the above. The carriage pulling member according to any one of claims 1 to 13, wherein the carriage pulling member is a belt, a toothed belt, a chain, or a wire.
The cart moving device, wherein the rotational force generating member is a pulley, a gear, or a sprocket that engages with the cart pulling member.

Images