JPH03249008A - Conveying device and fluid shelf using the device - Google Patents

Abstract

PURPOSE:To simplify the structure by allowing rollers which are advanced and rolled on the forwardly descending inclined plane when a rail is lifted, and retracted and rolled on the backwardly descending inclined plane when the rail is lowered to rise and fall from the face of the rail loaded with a load, thereby intermittently conveying the load on the rail. CONSTITUTION:A flexible tube 8 is repeatedly and pulsatively expanded and contracted by the supply and exhaust of compressed air to the tube to lift and lower a slider 21 lift a pallet 4 a load loading face 3 and place the pallet on the loading face. On the other hand, when the slider 21 is lowered, rollers 12a, 12b contact the inclined plane of a second, backward descending inclined surface member 23, roll backward by gravity, and return to a retracting position. When the slider is lifted, the roller 12a contacts the inclined plane of a first, forward descending inclined surface member 15, rolls forward by gravity. By repeating the expansion and contraction of the flexible tube 8, conveyance can thus be intermittently performed. When the conveying device is fully applied to a fluid shelf, the efficiency of utilizing a space can be improved.

Description

[Detailed Description of the Invention] The present invention provides a transport device that moves loads placed on rails up and down and intermittently transports them forward, and a transport device that transports each shelf booth using such a transport device. Concerning the configured liquid shelf.

■ Rice limb distortion As such a conveying device, for example,
No. 85 discloses a pulsating gravity conveyor having the following structure.

In this pulsating gravity conveyor, a longitudinally long rail member (braking rail) is attached to the frame so as to be inclined in the longitudinal direction, and a roller assembly extending over the entire length of the rail member is attached to the frame so as to extend longitudinally in the same manner. It is attached at an angle.

The roller assembly includes a number of rollers rotatably provided at predetermined intervals in the longitudinal direction, and these rollers are supported by flexible conduits that expand and contract by supplying and discharging pressure fluid, and respond to the expansion and contraction of the conduits. It is designed to go up and down. When the roller is in the lowered position, the load (article) is placed on the rail member, but when the roller rises, the load (article) is lifted by the roller and separated from the rail member, and moves forward along the roller due to the action of gravity. do. Next, when the rollers descend, the load is placed on the rail member again and is braked by the rail member to stop. In this way, the load advances intermittently (pulsatingly) along the inclined surface of the rail member due to the action of gravity.

In this conveying device, since the load is moved forward by gravity, it is an absolute condition that the rail member and the roller assembly be arranged so as to be tilted back and forth, so that the load can be conveyed horizontally along the floor surface. It cannot be applied to devices that require heavy transportation or have long transportation distances.

In addition, when this conveyance device is applied to a shelf booth with a fluidized shelf, there will inevitably be dead space between the bottom of the tank and the floor on the loading entrance side, and between the top surface of the shelf and the ceiling on the loading exit side. This creates space and increases the height of the flow shelf, which is disadvantageous in terms of effective use of space.

On the other hand, Japanese Utility Model Application Publication No. 61-191304 discloses that the cargo is transported forward intermittently by moving it up and down to each shelf booth of a floating shelf, where the cargo is carried in from the rear end and moved to the front end and taken out from the front end. A transport device is shown. This conveyance device includes a fixed cargo receiver that extends horizontally in the front and back and supports the cargo, and a movable cargo receiver that extends horizontally in the front and back and is movable up and down, and the movable cargo receiver has a frame member and a member. a lower member that is placed on the frame member via a flexible tube and moves up and down as compressed air is supplied or removed from the flexible tube; and an upper member that is movable back and forth relative to the lower member. It consists of. When the compressed air in the flexible tube is removed and the movable cargo receiver is lowered, the upper member is separated from the lower surface of the cargo, and the fixed cargo is supported on the member, but the flexible When compressed air is supplied to the tube and the movable cargo receiver raises the member, the fixed cargo receiver is lifted from the member by the upper member and the cargo is stored and supported on the upper member. In this state, the upper member is moved forward relative to the lower member by a driving device such as an air cylinder, and at this time the cargo is also moved forward. Next, the movable load receiver is moved back to the forward position by lowering the member, and the fixed load receiver is again placed on the member, and the upper member is moved back by the drive device to return to its original position, completing one cycle of intermittent advance. is completed.

Since this conveying device does not use gravity to advance the cargo, the fixed and movable cargo receivers can be arranged horizontally, and the above-described drawbacks of the conveying device can be overcome. However, on the other hand, the movable cargo receiver requires a drive device (flexible tube) to move the upper member back and forth in addition to a drive device (flexible tube) that moves the member up and down, making the structure complex and increasing the cost. In addition, power consumption also increases.

In the latter conveyance device, a roller is provided on the upper member, but this roller is not for rolling the load forward, but when the load is stopped by a stopper at the front end of the flow shelf. By rotating the rollers in contact with the load, only the upper member can be advanced without moving the load forward.

Therefore, when the loads become full, a large number of rollers rotate under all the loads, resulting in large resistance, which has the disadvantage that it is not suitable for long lanes.

The present invention solves all of the problems that the conventional conveying devices have, can be installed horizontally, and only needs to have a vertical drive device and can move forward and backward. The object is to obtain a conveyance device that does not require a drive device.

For this reason, the conveying device of the present invention includes a rail member that extends horizontally in the front and back and has an upper surface as a loading portion, and a rail member that is disposed at predetermined intervals in the front and rear direction along the rail member, and is intermittently and a load moving device that lifts the load on the loading surface and moves it forward, and the load moving device includes a roller and a roller that lifts and lowers the roller and projects from the load loading section when raised. a first inclined surface inclined downwardly toward the front for rollably supporting the raised roller; and a second inclined surface inclined downwardly toward the rear and supporting the lowered roller in a rolling manner. and slope forming means for forming the slope.

When the cliff roller is in the lowered position, the roller is located below the load surface of the rail member, so that if there is a load above, this load is supported on the load surface. Further, at this time, the roller is rotatably supported on the second inclined surface, and
Since the inclined surface is inclined downwardly toward the rear, the roller is located at the rearmost part of the inclined surface.

When the roller is raised from this state by the roller lifting means, the roller is rotatably supported by the first inclined surface at its rearmost position, and protrudes upward from the loading surface to load the load on the loading surface. Lift it up and away from the mounting surface. Since the first slope slopes downward toward the front,
The roller rolls along the inclined surface to its forwardmost position. Along with this, the load supported by the roller also moves forward, but the distance the load moves forward is the distance the load moves forward relative to the roller due to the rolling contact between the roller and the load, in addition to the distance the roller moves itself. The forward distance of the roller itself, that is, the first
is twice the total length of the inclined surface.

Next, when the roller is lowered by the roller raising/lowering means, the load is again supported on the loading surface, while the roller is rotatably supported at the forwardmost position of the second slope, and is moved rearward along the slope. It then rolled over to occupy its original rearmost position.

In this way, the rollers of the load moving device repeat the cycle consisting of rising → rolling forward along the first slope → lower wing → rolling backwards along the second slope. A load advances intermittently along a horizontal rail member. Since the cargo moving devices are arranged inside the rail member at predetermined intervals in the front-rear direction, the cargo or back portion that has passed through one cargo moving device is propelled by the next cargo moving device and moves forward one after another. .

When the forward movement of the load on the conveying device is blocked by a stopper at a specific location, for example, at the exit of a fluidized shelf, the first roller of the roller engages with the load whose advance is stopped by the stopper. Since a frictional force acts in a direction that prevents the rollers from rolling forward along the inclined surface of the roller, the rollers do not roll, but only repeat up and down movements at the rear position of the load moving device. The loads propelled by the rear load moving device successively reach this position and are accumulated at the position. In other words, this transport device also has an accumulation function.

FIG. 1 is a schematic cross-sectional view of a conveying device 1 according to an embodiment of the present invention, and FIG. 2 is a partially cutaway side view thereof. The conveying device 1 includes a pair of left and right rail members 2. Each rail member 2 has a channel shape with a U-shaped cross section, and extends horizontally from front to back. A flat loading surface 3 is formed on both sides of the upper opening, and a load consisting of a pallet 4 and an article 5 placed thereon is placed on the loading surface 3. It has become so. Inside the rail member 2, a large number of load moving devices 6 are arranged in a row at predetermined intervals in the front and back direction, and when these load moving devices 6 operate, the front part is intermittently lifted from the load surface 3. The object is moved forward a certain distance each time. In the embodiment shown in FIG. 1, the interval between the left and right rail members 2.2 is set equal to the width of the pallet 4, and a guide piece 7 for regulating the forward direction of the pallet 4 is provided on the outside of each rail member 2. However, as shown in FIG.
It may also be possible to transport it in a state where it protrudes outward from the rail member 2.2.

FIG. 4 is a drawing showing the left side part of FIG. 1 in more detail, and FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 4. The configuration of the cargo moving device 6 will be explained below with reference to these drawings and FIGS. 5 and 7 to 10. A flexible tube 8 made of a rubber hose or the like extends longitudinally on the bottom wall 2a of the rail member 2, and an elevating member 9 extends longitudinally over the upper part of the flexible tube 8. Compressed air is supplied to and discharged from the flexible tube 8, and as shown in FIG. 4, when the accessible tube 8 expands due to the supply of compressed air, the elevating member 9 is pushed up by the flexible tube 8 and rises. do. The elevating member 9 includes a base plate 9a that is pushed up by the flexible tube 8, leg pieces 9b that hang downward along both side edges of the cough base plate 9a, and protrudes upward in the center of the base plate 9a and extends in the front-rear direction. Convex portion 9
It has c. The flexible tube 8 and the elevating member 9 are common members to each load moving device 6, and extend back and forth through the lower part of each load moving device 6. The elevating member 9 is provided with a guide shaft 10 passing through it laterally at a suitable location, and both ends of the guide shaft 10 are connected to vertical guide grooves 11 (vertical guide grooves 11) provided on both side walls of the rail member 2. (Fig. 6) is slidably fitted. Therefore, the elevating member 9 cannot move in the front-back direction, but only in the up-down direction. Further, the ascending position of the elevating member 9 is defined by the upper end of the guide groove 11.

In this embodiment, each load moving device 6 has two rollers 12a and 12b, front and rear, and these rollers 12a.

Roller shafts 13a and i3b of the rollers 12b are rotatably supported by the front and rear ends of the connecting member 14, respectively, and the distance between the axes of the rollers 12a and 12b is always kept constant by the connecting member 14. A first inclined surface member 15 is fixed to the flat upper surface of the convex strip 9C of the elevating member 9, and when the first inclined surface member 15 rises together with the elevating member 9, the rollers 12a and 12b move to the first inclined surface. It engages with member 15 and is pushed upward. On the upper surface of the first inclined surface member 15, there are two front and rear rollers corresponding to the rollers 12a and 12b, respectively.
Two inclined surfaces 16a and 16b are formed. These inclined surfaces 16a and 16b are formed at the same height and are inclined downwardly toward the front at the same angle of inclination. The rollers 12a, 12b have these inclined surfaces 16a, 1
6b, so that the inclined surfaces 16a and 6b are rotatably supported by the connecting member 14 while maintaining a predetermined distance from each other.
It rolls forward along 16b. First inclined surface member 15
Stoppers 17, 17 are provided at the front and rear ends of the rollers 12a, 12b to prevent the rollers 12a, 12b from rolling beyond a predetermined range.

The rollers 12a and 12b have a circumferential groove 18 at the center in the width direction, and a protruding strip 19 protruding from the center in the width direction of the first inclined surface member 15 engages with this circumferential groove 18, so that the rollers 12a and 12b are smooth when rolling. 1
2a and 12b are prevented from shifting in the left-right direction.

FIG. 9 is an end view of the first inclined surface member 15, and FIG. 10 is a side view thereof. 20 is a lifting member 9 for moving the first inclined surface member 15
This is an engaging piece for fixing to.

A slider 21 is supported on and across the rollers 12a and 12b, and roller shafts 13a and 13b are inserted into elongated holes 22a and 22b in the longitudinal direction provided in the side walls of the slider 21, respectively, with sufficient clearance. It's fitted. When the rollers 12a, 12b are at the rear end positions of the inclined surfaces 16a, 16b as shown in FIG. 16a,
As the slider 21 rolls forward on the rollers 16b, the slider 21 rolls against the rollers 12a and 12b by rolling contact with the rollers 12a and 12b.
2a and 12b are pushed further forward. When the rollers 12a and 12b are raised, the rail member 2
protrudes upward from the loading surface 3, so the pallet 4 placed on the loading surface 3 is pushed up by the slider 21, away from the loading surface 3, and moves forward together with the slider 21.

The slider 21 has a circumferential groove 18 as shown by the dotted line a in FIG.
A protrusion that engages with the slider 21 may be provided to guide the movement of the slider 21.

When compressed air is not supplied to the flexible tube 8, the flexible tube 8 contracts into a flat shape as shown in FIG.
supported on a. At this time, the rollers 12a and 12b are supported by the second inclined surface member 23. FIG. 7 is an end view of the second inclined surface member 23. FIG. 8 is a side view thereof. The second inclined surface members 23 having an L-shaped cross section are provided in pairs on the left and right along the inner surfaces of the left and right side walls of the rail member 2, respectively, and the horizontal leg pieces 23a at the lower ends face each other and move inward. It stands out. The elevating member 9 and the first inclined surface member 1
5 passes between the leg pieces 23a and goes up and down, but the upper surface of the leg piece 23a is the inclined surface 1 of the first inclined surface member 15 in the lowered position.
It occupies a slightly higher position than 6. Therefore, while descending together with the first slope member 15, the roller 12 engages with the second slope member 23, is supported by the second slope member 23, and leaves the slope 16 of the first slope member 15.

On the upper surface of the leg piece 23a of the second inclined surface member 23, a sixth
As shown in the figures to FIG.
, 24b are formed, and rollers 12a and 12b are rotatably supported on these inclined surfaces, respectively. The inclined surfaces 24a, 24b are inclined downwardly in the opposite direction to the inclined surfaces 16a, 16b, that is, toward the rear.

Note that the second inclined surface member 23 is attached to the rail member 2 via an attachment piece 25 and is fixed to the rail member 2.

The flexible tube 8 repeatedly expands and contracts in a pulsating manner by supplying and discharging compressed air. When the flexible tube 8 is contracted, the load moving device 6 is in the lowered position shown in FIG. 5, and the slider 21 is Since the pallet 4 is located below the loading surface 3, it is supported and stopped on the loading surface 3. At this time, the rollers 12a and 12b move toward the inclined surface 24 of the second inclined surface member 23.
A and 24b are rolled by gravity to occupy the rearmost position. The rollers 12a and 12b are the connecting member 1
Since they are connected by roller 4 and move in the same way, the following is roller 1.
Only 2a will be explained. In FIG. 6, the position of the roller 12a at this time is indicated by a chain line 12. It is shown by .

When the flexible tube 8 expands from this state and the elevating member 9 and the first inclined surface member 15 rise, the roller 12a engages with the inclined surface 16a of the first inclined surface member 15 and the inclined surface 2
4a and is pushed up to reach the solid line position in FIG. At the same time, the slider 21 also rises and engages with the lower surface of the pallet 4, lifting the pallet 4 from the loading surface 3. The roller 12a then rolls on the inclined surface 16a due to gravity and reaches the frontmost position 12□ where it is regulated by the stopper 17. At this time, the slider 21 is driven forward by the rotation of the roller 12a and moves in parallel with the roller 12a, so as shown by a chain line 21, the slider 21 moves forward by a distance B that is twice the forward distance A of the roller 12a. roller 1
2a and the slider 21 descend while moving forward, but the slider 21 remains above the loading surface 3 until it reaches the forwardmost position.

Next, the first inclined surface member 1 is compressed by the contraction of the flexible tube 8.
When the pallet 5 descends, the roller 12a also descends and is supported on the inclined surface 24a of the second inclined surface member 23 as shown by the chain line 123, and the pallet 4 is supported on the loading surface 3. Then, the roller 12a moves backward on the inclined surface 24a by gravity and returns to the original position 12, and at the same time, the slider 21 also retreats by twice the retreating distance of the roller 12a to occupy its initial position with respect to the roller 12a. .

In this way, the roller 12a rises (12,→12a
), forward rolling along the inclined surface 16a (12a→12t
), descending (12, -123''), and rolling backward along the inclined surface 24a (123→12I), the pallet 4 is sequentially arranged forward and backward along with the conveyed items thereon. It moves forward intermittently on the installed cargo moving device 6.

This conveyance device does not require the rail member 2 to be arranged at an incline back and forth even though the load is moved forward by the action of gravity, and from a different point of view, even if the rail member 2 is arranged horizontally. Regardless, the only power source required is a compressor for supplying and discharging compressed air to and from the flexible tube 8, and no power source is required to provide forward movement to the load. Therefore, since there are fewer mechanical elements, there are fewer failures and greater durability.

In addition, since the load is sent a fixed distance while moving up and down, it does not run out of control (and is safe. Furthermore, the position is corrected by the guide piece 7 each time it moves up and down, so that it is always aligned along the center line of the conveyor. Moving.

The speed at which the load is fed can be varied steplessly by adjusting the time from when the compressed air is discharged from the flexible tube 8 until when the compressed air is fed to the fire. As the control device, a conventionally known control device can be used, and automation is easy.

When the advance of the pallet 4 is prevented by a suitable stopper at a specific location on the conveying device 1, the roller 12 moves forward on the inclined surface 16 due to the frictional force acting between the slider 21 on which the pallet 4 is placed and the roller 12. It can repeatedly move up and down on the spot without rolling, and the load also stays on the spot. The loads propelled by the rear load moving device 6 reach this position one after another and are accumulated there. At this time, for example, the front and rear ends of the slider 21 are bent diagonally downward as shown in order to prevent the front end of the slider 2 of the following cargo moving device 6 from hitting the rear end of the front pallet 4 and damaging it. It is preferable to leave it alone.

11 and 12 show another embodiment of the present invention. Note that in the drawings from FIG. 11 onwards, members similar to those in the embodiment described above are designated by the same reference numerals, and detailed explanations thereof will be omitted. In the embodiment shown in FIGS. 11 and 12, the front and rear rollers 12.12, which are connected to each other by a connecting member 14 as in the previous embodiment, are each provided with a separate slope forming member 26.12.
It is supported by 26.

Each inclined surface forming member 26 is pivoted at its front end via a pivot 27 to the rail member 2 so as to be able to swing up and down, and is supported from below by the elevating member 9.

When the elevating member 9 rises, the inclined surface forming member 26 is pushed up by the elevating member 9 and swings upward around the pivot shaft 27 to occupy the position indicated by the solid line in the figure, and its upper surface faces forward and forms a downwardly inclined forward slope. When the elevating member 9 descends, the inclined surface forming member 26 rotates around the pivot 27.
The upper surface, which had formed the advancing inclined surface 16, turns rearward to form a retreating inclined surface 24, which is inclined downward. roller 12
12. is the same as in the previous example. →１２→１２□→１２３→
12. Repeat the movement. In this embodiment, roller 1
2 can move from the forward slope 16 to the backward slope 24 without descending in the vertical direction, but the hole through which the slope forming member 26 or the pivot shaft 27 of the rail member 2 passes is formed into a vertically elongated ellipse. , the roller 12 is on the forward slope 16
It may also be configured to descend in the vertical direction when moving from to the retreating inclined surface 24.

FIGS. 13 and 14 show still other embodiments.

In this embodiment, when the roller 12 is lowered, the roller shaft 1
3 is supported by the inclined surface 29 of the second inclined surface member 28. The inclined surface 29 is inclined downward toward the rear.

The roller 12 is pushed up by the first inclined surface member 15 and rolls forward on the inclined surface 16 of the first inclined surface member 15,
When the first inclined surface member 15 descends, the roller shaft 13 engages with the inclined surface 29 and moves from being supported by the first inclined surface member 15 to the second inclined surface member 15.
The roller shaft 13 is moved to support by the inclined surface member 28 and rolls backward along the inclined surface 29.

Since the circumferential speed of the roller 12 is different when moving forward and when moving backward, the slider 21 as in the previous embodiment is not provided in this embodiment, and the front end is placed directly on the roller 12. Further, in the present invention, the first inclined surface member 15 is divided into left and right parts, and the flange portion 30 provided on the outside of each member 15 prevents the roller 12 from moving laterally.

FIG. 15 shows an example in which only one rail member 2 covering the entire width of the load is provided instead of providing a pair of left and right rail members. The structure of the cargo moving device 6 is substantially the same as that shown in FIGS. 13 and 14, except that the width is widened between both side wall portions of the rail member 2. This embodiment is suitable for transporting containers such as plastic containers and carton cases.

In the embodiment shown in FIGS. 16 and 17, the lifting drive consisting of the flexible tube 8 described above is replaced by a mechanical lifting drive.

That is, the sliding rail 31 is placed on the bottom wall 2a of the rail member 2.
is extended slidably back and forth, and the sliding rail 31
and the elevating member 9 are connected at appropriate locations by link members 32. The lower end of the link member 32 is the sliding rail 31
The upper end is pivotally connected to a bracket 33 projecting from the upper end thereof, and the upper end is pivotally connected to an elevating member 9. A bracket 34 protrudes from the lower surface of the slide rail 31 through an elongated hole 35 in the bottom wall 2a, and the bracket 34 is connected to the piston 3 of the air cylinder 36.
It is connected to 7. By supplying and discharging compressed air to and from the air cylinder 36 to operate the piston 37, the sliding rail 31 reciprocates back and forth on the bottom wall 2a, but the elevating member 9 moves as shown in FIGS. Since forward and backward movement is prevented by the engagement of the guide shaft 10 and the guide groove 11, the link member 32 rises and falls between the solid line position and the chain line position in FIG. 17 in response to the reciprocation of the slide rail 31. As a result, the reciprocating motion of the slide rail 31 is converted into the vertical motion of the elevating member 9. In this embodiment as well, the load is moved forward by the rolling of the rollers 12 due to gravity, and a drive device for moving the load forward is not required, as in the previous embodiments.

FIG. 18 is a side view showing a fluidized shelf 38 using the above-described transport device 1 as a load receiving member of a shelf booth.

This fluidized shelf 38 has a large number of columns 39 erected in rows in the front, rear, left and right directions, which are connected in the left-right direction by cross beam members 40, and the rail members 2 of the conveying device 1 are connected to these cross beam members 40.
is supported and fixed and extends horizontally from the front end A to the rear end B of the flow shelf 38. These conveying devices 1 form a large number of shelf booths 41 arranged vertically, horizontally, and horizontally, and each shelf booth 41 moves the fluidized shelf 38 back and forth from the front end A to the rear end B of the fluidized shelf 38. The front end is the outlet 4.
2. The rear end serves as an entrance 43.

The load consisting of the pallet 4 and stored items 5 is carried by a forklift 44.
It is carried into each shelf booth 41 from the carry-in port 43, and is sequentially carried to the front carry-out port 42 side as described above by the conveyance device 1 constituting the shelf booth 41.
They line up in the order of arrival and stop, waiting in preparation for unloading.

This floating shelf 38 can arrange each shelf space 41 horizontally by using the conveyance device 1, so it has a lower part on the carry-in side and an upper part on the carry-out side, like a conventional floating shelf in which the shelf booths are tilted back and forth. There is no dead space, and cargo can be transported and stored in a stable manner. In addition, since the total height of the conveying device 1 is approximately equal to the height of the rail member 2 and is relatively low, many advantages can be obtained as a fluid shelf, such as the ability to set a wide shelf booth space.

As described above, the conveyance device according to the present invention includes a rail member that extends horizontally in the front and back and has its upper surface as a loading surface, and a rail member that is disposed at predetermined intervals in the front and back direction along the rail member, and a surface moving device that lifts the load on the load placement surface and moves it forward, and the surface movement device includes a roller, and a roller lifting means that raises and lowers the roller to project from the load placement surface when raised. , forming a first inclined surface tilted downward toward the front that rollably supports the raised roller, and a second inclined surface tilted downward toward the rear that supports the lowered roller so that it can roll freely. Since the load can be moved horizontally by the action of gravity, there is no need for a drive device to advance the load even though it is arranged horizontally. As a result, it becomes possible to install a long conveying device without creating dead space in the vertical direction, and the structure of the conveying device is simplified, and manufacturing costs and operating costs are significantly reduced.

Furthermore, since there are few mechanical elements, there are fewer breakdowns and the durability is high.The load is sent a fixed distance at a time, so it is safe and does not run out of control.If the rail member is provided with a guide piece, the load can be moved vertically. The position is corrected each time by the guide piece, and it always moves along the center line of the conveying device without shifting.Control can be performed by a conventionally known control device, and automation is easy, and many other excellent effects can be obtained. .

Further, by applying this conveyance device to the shelf booths of the fluidized shelves, a fluidized shelf with high space utilization efficiency in which each shelf booth is arranged horizontally can be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of a conveyance device according to an embodiment of the present invention, FIG. 2 is a partially cutaway side view thereof, and FIG. 3 is a cross-sectional view similar to FIG. 1 showing a modification thereof. , FIG. 4 is a drawing showing a part of FIG. 1 in more detail by enlarging it, FIG. 5 is a drawing similar to FIG. 4 showing the state when the roller is lowered, and FIG. 7 is an end view of the second inclined surface member, FIG. 8 is a side view of the same, FIG. 9 is an end view of the first inclined surface member, and FIG. 10 is a side view of the same, FIG. 11 is a cross-sectional view similar to FIG. 4 showing another embodiment, FIG. 12 is a side view of the main part thereof, and FIG. 13 is a cross-sectional view similar to FIG. 4 showing another embodiment. , Figure 14 is X IV-X IV in Figure 13.
15 is an overall cross-sectional view showing another embodiment, FIG. 16 is a cross-sectional view similar to FIG. 4 showing another embodiment, and FIG. 17 is a side view of the main part thereof. 18 are side views showing an example of a fluidized shelf using the conveying device of the present invention. DESCRIPTION OF SYMBOLS 1... Conveyance device, 2... Rail member, 3... Loading surface, 4... Pallet, 5... Transported object, 6... Surface moving device, 7... Guide piece, 8...Flexible tube,
9... Lifting member, 10... Guide shaft, 11... Guide groove, 12... Roller, 13... Roller shaft, 14...
- Connecting member, 15... First inclined surface member, 16... Inclined surface, 17... Stopper, 18... Circumferential groove, 19...
- Convex strip, 20... Engaging piece, 21... Slider, 2
2... Elongated hole, 23... Second slope member, 24...
Inclined surface, 25... Mounting piece, 26... Inclined surface forming member, 27... Pivot, 28... Second inclined surface member, 29.
... Inclined surface, 30 ... Flange part, 31 ... Sliding rail, 32 ... Link member, 33.34 ... Bracket, 35 ... Long hole, 36 ... Air cylinder, 3
7... Piston, 38... Fluid shelf, 39... Support column, 40... Cross beam member, 41... Shelf booth, 42...
Loading port, 43... Loading port, 44... Forklift.

Claims (4)

[Claims] (1) A rail member that extends horizontally from front to back and has its upper surface as a loading surface, and is arranged at predetermined intervals in the front and back direction along the rail member and intermittently lifts the load on the loading surface and moves it forward. The load moving device includes a roller, a roller elevating means that raises and lowers the roller and projects it from the load placement surface when raised, and a forward roller that supports the raised roller so that it can roll freely. The first slanted downward
and an inclined surface forming means forming a second inclined surface inclined downwardly toward the rear and rotatably supports the lowered roller. (2) The conveying device according to claim 1, wherein the roller elevating means is constituted by a flexible tube that expands and contracts by supplying and discharging fluid. (3) Claim 1, wherein each cargo moving device is provided with at least two rollers, and these rollers are connected to each other by a connecting member.
The conveying device described. (4) A fluid shelf in which each shelf booth is constructed by the conveying device according to claim 1.