JP2017206360A - Carriage conveyor with lifting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carriage conveyor with lifting function for lifting an article to be transported by travel power with no power source at a carriage side, facilitating changes of position where a transportation base is lifted in a transportation passage and a lifted height, as well as maintaining a low floor configuration even for a long lifting stroke.SOLUTION: A carriage conveyor with lifting function conveys a carriage 2 along a transportation passage, where a carriage 2 comprises lift supporting means for supporting a transportation base in directly vertically movable manner. The carriage conveyor with the lifting function comprises: an operation body 3 arranged at a predetermined position at the ground side in the transportation passage; a rotary body 4 rotatably arranged at the predetermined position of the carriage 2; an engaging member 5 for engaging the rotary body 4; and lift driving means B for lifting the transportation base by a rotation force of the rotary body 4. The engaging member 5 is driven by the operation body 3 to rotate the rotary body 4, on the basis of a change in relative positions of the carriage 2 and the operation body 3 in a transportation direction E.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a carriage conveyor that can raise and lower a conveyed product on a carriage to a height suitable for work.

In an article assembly line or the like, a cart conveyor that can raise and lower a conveyed product (for example, a vehicle body) to a height suitable for a part assembling operation is used.
In such a cart conveyor having a lifting function, as a configuration in which the carriage is lifted by running power without having power on the cart side, the carriage on which the carriage is placed is supported so that it can move up and down in the vertical direction. There is one in which a cam follower roller is provided on a lifting support means (cross link mechanism) (for example, see Patent Document 1). With such a configuration, as the carriage travels, the cam follower rolls up and down on the inclined surface on the cam rail laid on the ground, so that the transport table supported by the lifting support means is Go up and down.

JP 2006-44925 A

Since the position and the shape of the cam rail laid at a predetermined position on the ground side of the transport path are fixed in the cart conveyor having the lifting function as in Patent Document 1, the position and the rising height of the transport platform in the transport path are limited. Is done.
When changing the position to raise and lower the transport platform in the transport path and the height of the lift in the configuration as in Patent Document 1, the cam rail position is changed and laid, or the cam rail is removed and a cam rail having a different shape is laid. It is conceivable to re-install the cam rail. However, since the work of re-laying the cam rail takes time, the operating rate of the production line is lowered, and the production cost is increased if cam rails of various shapes are provided.
Moreover, the cart conveyor having the lifting function as in Patent Document 1 needs to project the cam driven roller downward, and needs to lay a cam rail having an inclined surface for rolling the cam driven roller on the ground side. Therefore, a low floor structure cannot be maintained especially when the lifting stroke is large.

  Therefore, in view of the above-described situation, the problem to be solved by the present invention is to raise and lower the conveyance platform in the conveyance path in a carriage conveyor having a raising and lowering function that raises and lowers a conveyance object with traveling power without having power on the carriage side. It is easy to change the position and rising height, and to maintain a low floor structure even when the lifting stroke is large.

In order to solve the above problems, the cart conveyor according to the present invention includes a lifting support means for supporting the transport table so that it can move up and down in the vertical direction, and transports the cart along the transport path. A carriage conveyor having a lifting function,
An operating body arranged at a predetermined position on the ground side of the transport path;
A rotating body rotatably arranged at a predetermined position of the carriage,
An engaging member that engages with the rotating body;
Elevating drive means for raising and lowering the transfer table by transmitting the rotational force of the rotating body to the transfer table or the elevating support unit;
With
The rotating body is rotated by driving the engagement member by the operating body based on a relative position change in the conveying direction between the carriage and the operating body (Claim 1).

According to such a structure, based on the relative position change of the conveyance direction of a trolley | bogie and the ground side operation body, a rotary body rotates by driving an engagement member with an operation body.
Therefore, as the carriage travels, the engaging member is driven by the operating body arranged on the ground side, and thereby the rotating body rotates, so that the rotational force of the rotating body is transmitted to the transport table or the lifting support means for transport. The transport table is moved up and down by the lift drive means for moving the table up and down.
Alternatively, when the carriage is stopped, moving the operating body rearward or forward in the transport direction causes a relative position change in the transport direction between the carriage and the ground-side operating body. The member is driven to rotate the rotating body, and the transport table is moved up and down by the lift driving means.
Further, when the carriage is traveling, the operating body may be moved in the direction opposite to the traveling direction of the carriage. According to such a configuration, since the speed of the relative position change in the transport direction between the carriage and the operating body is increased, the lifting speed of the transport table can be increased.
As described above, based on the relative position change in the transport direction between the carriage and the ground-side operating body, the rotating body that provides the rotational force that is the input of the lifting drive means rotates.
Therefore, by changing the position of the operating body arranged at a predetermined position on the ground side of the transport path, the position for raising and lowering the transport base in the transport path can be easily changed, and the engaging member is driven by the operating body. By appropriately changing the distance to be carried out, the height of the transport table can be easily changed.
In addition, since the transport table moves up and down based on the relative position change in the transport direction between the carriage and the ground operating body, the vertical dimension can be kept small, so even if the lift stroke is large Low floor structure can be maintained.

Here, the rotating body rotates about a left-right axis,
The engaging member includes an upper engaging member that engages with an upper portion of the rotating body, and a lower engaging member that engages with a lower portion of the rotating body,
It is preferable that the transport table is raised or lowered by properly using driving of the upper engaging member by the operating body and driving of the lower engaging member by the operating body (Claim 2).
Alternatively, the rotating body rotates about a vertical axis,
The engaging member includes a left engaging member that engages with a left portion of the rotating body, and a right engaging member that engages with a right portion of the rotating body,
You may make it raise or lower the said conveyance stand by selectively using the drive of the said left side engagement member by the said operation body, and the drive of the said right side engagement member by the said operation body (Claim 3).

According to the configuration as described above, the use of the drive of the upper engagement member and the drive of the lower engagement member by the operating body, or the use of the drive of the left engagement member and the drive of the right engagement member by the operation body, The transfer table is raised or lowered.
Therefore, even if the traveling direction of the carriage is one direction, it is possible to easily realize a desired operation of rising and lowering in one section.

Further, the engaging member has one or more projecting portions projecting laterally with respect to the transport direction,
More preferably, the operating body abuts against the protrusion.
According to such a configuration, the engaging member is driven by the operating body by bringing the operating body into contact with the protruding portion that protrudes laterally provided on the engaging member. The driving operation becomes more stable and reliable.

Furthermore, a one-way clutch is provided between the rotating body and a brake that brakes the rotating body,
More preferably, the braking force of the brake is transmitted to the rotating body by the one-way clutch when the rotating body rotates in the direction in which the transport table descends (Claim 5).
According to such a configuration, the one-way clutch is provided between the rotating body and the brake that brakes the rotating body, and when the rotating body rotates in the direction in which the transport table descends, the braking force of the brake is applied to the rotating body. The braking force of the brake is not transmitted to the rotator when the rotator rotates in the direction in which the transport table moves up.
Therefore, when raising the carriage, the brake does not act and no force against the brake is required, so the operation is light and smooth, and when the carriage is lowered and stopped, the brake acts and the carriage is Hold.
In this way, the presence or absence of transmission of the braking force of the brake is switched by the one-way clutch in accordance with the direction in which the transport table moves up and down. Therefore, it is not necessary to perform electrical control so as to switch on and off the brake between when the carriage is raised, when it is lowered, or when it is stopped, so that the manufacturing cost can be reduced.

It is even more preferable that the brake is a magnet brake.
According to such a configuration, since the magnet brake is a non-contact type that generates torque by magnetic force and does not wear, it is possible to ensure the reliability of the brake that is operated when the transport table is lowered and stopped for a long period of time.

Further, it is even more preferable that the rotating body and the engaging member are provided below the upper surface plate of the base of the carriage.
According to such a configuration, since the rotating body and the engaging member are positioned below the upper surface plate of the base of the carriage, the rotating body and the engaging member do not protrude on the upper surface plate. Work will not be hindered.
In addition, since the transport table moves up and down based on the relative position change in the transport direction between the carriage and the ground side operation body, the vertical dimension can be kept small. Even if it is provided below the top plate of the base, the low floor structure is maintained.

As described above, according to the cart conveyor having the lifting function according to the present invention, in the cart conveyor having the lifting function that lifts and lowers the transported object with traveling power without having power on the cart side, mainly as follows. There is an effect.
(1) Since the rotating body rotates by driving the engagement member by the operating body based on the relative position change in the transport direction between the carriage and the operating body on the ground side, the operation of placing the rotating body at a predetermined position on the ground side of the transporting path. By changing the position of the body, it is possible to easily change the position of raising and lowering the transport table in the transport path, and by appropriately changing the distance for driving the engagement member by the operating body, This can be easily changed.
(2) Since the transport table moves up and down based on the relative position change in the transport direction between the carriage and the operating body on the ground side, the vertical dimension can be kept small, so even if the lift stroke is large Low floor structure can be maintained.

It is a top view which shows the trolley | bogie conveyor which has the raising / lowering function which concerns on embodiment of this invention. It is a top view of the trolley | bogie which concerns on embodiment of this invention. It is also a front view. It is a schematic plan view which shows an operation body, a rotary body, an engagement member, etc., and shows a state before the operation piece on the lower side of the operation body abuts on the lower protrusion of the engagement member. It is a schematic front view which shows a rotary body, an engaging member, etc., The lower side protrusion part is located in the front-end part, and the upper side protrusion part has shown the state located in the rear-end part. It is a schematic plan view which shows an operation body, a rotary body, an engagement member, etc., and has shown the state which the operation body contact | abutted to the protrusion part. It is the schematic seen from the back which shows the state which made the operation piece of the lower side of the operation body protrude rightward. It is a schematic front view which shows a rotary body, an engagement member, etc., The upper protrusion part is located in the front-end part, and the state which the lower protrusion part was located in the rear-end part is shown. It is a schematic plan view which shows an operation body, a rotary body, an engagement member, etc., and has shown the state before the operation piece of the upper side of an operation body contact | abuts to the protrusion part of the upper side of an engagement member. It is the schematic seen from the back which shows the state which made the upper operation piece of the operation body protrude rightward. 4A and 4B are schematic plan views for explaining an operation of retracting an operation piece when an overload is detected, in which FIG. 5A shows a normal state, and FIG. 5B shows a state in which a table supporting an operating body is slid due to overload. .

Embodiments according to the present invention will be described below with reference to the drawings.
In this specification, front and rear, right and left are defined in the state which went to the conveyance direction (for example, the arrow E in FIG. 1) of a trolley, and the figure seen from the left is made into a front view.

The cart conveyor 1 which has the raising / lowering function based on Embodiment of this invention is shown in the top view of FIG. Moreover, the trolley | bogie 2 which concerns on embodiment of this invention is shown in the top view of FIG. 2, and the front view of FIG.
The cart conveyor 1 having the lifting function transports the carts 2, 2,... In the transport direction E along the transport path C by the driving device D. And it is operated by the operating body 3 arrange | positioned in the ground side predetermined location of the conveyance path | route C, and the conveyance stand 2B which mounts a conveyed product can be raised / lowered.

Next, a configuration example of the carriage 2 will be described.
The trolley 2 includes horizontal rollers 11 and 11 on the front and rear sides of the lower surface of the base 2A, and traveling wheels 12 and 12, and so on on the front and rear and the left and right of the lower surface of the base 2A.
The horizontal rollers 11, 11 are guided by the guide rails GR laid along the conveyance path C, and the traveling wheels 12, 12,... Roll on the left and right traveling rails R, R. It is possible to travel along.
The carriage 2 moves along the conveyance path C by driving the side surface of the carriage 2 by a driving device D which is a friction roller type driving device.
Here, the driving device D is not limited to the friction roller driving device, and may be a power chain driving device or the like.

The carriage 2 includes an elevating support means A that supports a carriage 2 </ b> B on which an unillustrated carriage is placed so as to be movable up and down in a vertical direction with respect to a base 2 </ b> A on which an operator rides. The raising / lowering support means A is comprised by the X-shaped symmetrical link which expands-contracts to an up-down direction (for example, refer Unexamined-Japanese-Patent No. 2005-230960), a linear guide, etc.
Further, the carriage 2 includes elevating driving means B that moves the conveying table 2B up and down by transmitting the rotational force of the pulley 4 as a rotating body to the conveying table 2B or the elevating support means A. The raising / lowering drive means B is comprised by the drive mechanism (for example, refer US Patent 6,547,216 specification) which raises / lowers combining a spiral-shaped vertical board and a horizontal board, for example.
In addition, the raising / lowering drive means B is not limited to such a structure, The structure which raises / lowers the conveyance stand 2B by driving the raising / lowering support means A by winding or extending | extracting flexible elongate members, such as a belt. (For example, refer to JP2009-269716A).
Alternatively, a ball screw or the like may be employed as the lifting drive means B. When a ball screw is employed, for example, the ball screw is rotated by using the lower end of the ball screw shaft extending in the vertical direction as an input shaft and rotating the ball screw. The nut may be moved up and down, and the carrier 2B and the like may be connected to the nut.

Next, configuration examples of the pulley 4 and the engagement member 5 that are rotating bodies provided in the carriage 2 will be described.
As shown in the front view of FIG. 3, the schematic plan view of FIG. 4, and the schematic front view of FIG. 5, the pulley 4, which is a rotating body that can rotate about the left-right axis, is the front left end of the base 2 </ b> A of the carriage 2. Placed in the section.
In addition, pulleys 13 to 15 that are rotatable around the left-right axis are arranged at predetermined positions. That is, the pulley 13 is disposed at the lower rear position of the pulley 4, the pulley 14 is disposed rearwardly from the pulley 13, and the pulley 15 is disposed above the pulley 14 rearwardly separated from the pulley 4.
The pulley 4 and the pulleys 13 to 15 are timing pulleys, and an endless timing belt 5 that is an engaging member that engages with the pulley 4 that is a rotating body is stretched over the pulleys.
As shown in the front view of the carriage 2 in FIG. 3, the pulley 4 that is a rotating body, the timing belt 5 that is an engaging member, and the like are positioned below the upper surface plate 10 of the base 2 </ b> A of the carriage 2. Therefore, since the rotating body and the engaging member do not protrude on the upper surface plate 10, the work performed on the upper surface plate 10 is not hindered.

Here, the upper portion 5A of the timing belt 5 is an upper engagement member 5A that engages with the upper portion of the pulley 4 that is a rotating body, and the lower portion 5B of the timing belt 5 is the lower portion of the pulley 4 that is a rotating body. The lower engagement member 5B is engaged with the lower engagement member 5B. Accordingly, the upper engaging member 5A and the lower engaging member 5B move in the reverse direction in the front-rear direction.
A protrusion 7 protruding leftward is attached to the upper engagement member 5A, and a protrusion 6 protruding leftward is attached to the lower engagement member 5B.
7 and 10, the upper and lower protrusions 7 and 6 are guided by linear guides L1 and L2 in the front-rear direction, respectively.

As shown in the schematic plan view of FIG. 4 and the schematic front view of FIG. 5, the pulley 4, which is a rotating body, is connected to the pulley 4 by pulleys 16 and 17, and a timing belt 18 that spans the pulleys 16 and 17. A magnet brake 8 for braking is connected.
A one-way clutch 9 is mounted between the rotation shaft of the pulley 4 and the pulley 16. The one-way clutch 9 transmits the braking force of the brake 8 to the pulley 4 when the pulley 4 rotates in the direction to lower the transport table 2B, and the brake when the pulley 4 rotates in the direction to raise the transport table 2B. The braking force of 8 is not transmitted to the pulley 4.
Therefore, the brake 8 does not act when raising the carriage 2B, and no force is required to resist the brake 8. Therefore, the operation is light and smooth, and the brake 8 is lowered when the carriage 2B is lowered and stopped. It acts to hold the carrier 2B.
In this manner, the presence or absence of transmission of the braking force of the brake 8 is switched by the one-way clutch 9 in accordance with the direction in which the transport table 2B moves up and down. Therefore, there is no need to electrically control the on / off switching of the brake 8 when the carrier 2B is raised, lowered or stopped, so that the manufacturing cost can be reduced.
Here, it is desirable that the brake 8 that brakes the pulley 4 as a rotating body can adjust the braking torque. If the braking torque of the brake 8 is adjusted and the force required to lower the transport table 2B is set small, the transport table 2B can be lowered manually.
In addition, since the magnet brake 8 is used and the magnet brake 8 is a non-contact type that generates torque by a magnetic force and is not worn, the reliability of the brake that is operated when the transport table 2B is lowered and stopped is extended over a long period of time. It can be secured.

Next, a configuration example of the operation body 3 arranged at a predetermined position on the ground side will be described.
The operating body 3 rotates the pulley 4 that is a rotating body by driving a timing belt 5 that is an engaging member.
As shown in the schematic plan views of FIGS. 4 and 9 and the schematic view seen from the rear of FIGS. 7 and 10, the operating body 3 includes an operating piece 19 that abuts against the protruding portion 6 of the lower engaging member 5B. The operation piece 20 is provided in contact with the protruding portion 7 of the upper engaging member 5A.

When the orthogonal shaft geared motor M1 is driven, the output shaft H1 is rotated, and the gear mechanism 21A is rotated about the rotation axis I1 by the link mechanism 23. Therefore, the gear 21B meshing with the gear 21A is rotated about the rotation axis I2. . Therefore, the operation piece 19 formed integrally with the gear 21B is projected rightward toward the carriage 2 as shown in FIGS. 4 and 7 by the orthogonal shaft geared motor M1, and forwardly projected as shown in FIG. It is possible to switch between these states.
Further, when the orthogonal shaft geared motor M2 is driven, the output shaft H2 is rotated, and the gear mechanism 22 (not necessarily a gear) is rotated about the rotation axis I2 by the link mechanism 24. Therefore, the operation piece 20 formed integrally with the gear 22 is projected rightward toward the carriage 2 as shown in FIGS. 9 and 10 by the orthogonal shaft geared motor M2, and forwardly projected as shown in FIG. It is possible to switch between these states.

Next, an operation for raising and lowering the transport table 2B at a predetermined location on the transport path will be described.
4 and the schematic view seen from the rear of FIG. 7, the carriage 2 is moved in the transport direction E in a state where the operation piece 19 on the lower side of the operation body 3 protrudes rightward toward the carriage 2. As shown in the schematic plan view of FIG. 6, the projecting portion 6 comes into contact with the rear surface of the operation piece 19.
As the carriage 2 moves in the transport direction E, the lower protrusion 6 moves rearward with respect to the carriage 2 as indicated by an arrow F1 in FIGS. Accordingly, the upper protrusion 7 moves forward with respect to the carriage 2 as indicated by an arrow F2 in FIGS.
As the protrusions 6 and 7 move, the timing belt 5 that is an engaging member has an upper engaging member 5A that moves forward and a lower engaging member 5B that moves rearward. 4 rotates as indicated by an arrow H in FIG.
Therefore, since the raising / lowering driving means B is driven by the rotational force of the pulley 4, the transport table 2B is raised.

In the state in which the transport table 2B is raised, as shown in the schematic front view of FIG. 8, the upper protrusion 7 is positioned forward and the lower protrusion 6 is positioned rearward.
In this state, as shown in the schematic plan view of FIG. 9 and the schematic view seen from the rear of FIG. 10, the operation piece 20 on the upper side of the operation body 3 is projected rightward toward the carriage 2. When the carriage 2 travels in the transport direction E, the protruding portion 7 comes into contact with the rear surface of the operation piece 20.
As the carriage 2 moves in the transport direction E, the upper protrusion 7 moves rearward with respect to the carriage 2 as indicated by an arrow G1 in FIG. Accordingly, the lower protrusion 6 moves forward with respect to the carriage 2 as indicated by an arrow G2 in FIG.
As the protrusions 7 and 6 move, the timing belt 5 that is an engaging member moves the upper engaging member 5A backward and the lower engaging member 5B moves forward, so that the pulley 4 that is a rotating body. Rotates in the direction opposite to the arrow H in FIG.
Therefore, since the raising / lowering driving means B is driven by the rotational force of the pulley 4, the transport table 2B is lowered.

As described above, based on the change in the relative position in the transport direction E between the carriage 2 that moves in the transport direction E along the transport path C and the operating body 3 disposed at a predetermined position on the ground side, the timing belt 5 that is an engaging member. Is driven by the operating body 3 to rotate the pulley 4 as a rotating body.
Since the rotation direction of the pulley 4 can be changed by properly using the driving of the upper engaging member 5A by the operating body 3 and the driving of the lower engaging member 5B by the operating body 3, the raising and lowering of the transport table 2B can be performed. Can be switched.
As described above, the carriage 2B is raised or lowered by properly using the upper engagement member 5A and the lower engagement member 5B to be driven by the operating body 3, so even if the traveling direction of the carriage 2 is one direction. In one section, it is possible to easily realize a desired operation of ascending and descending.

Further, as described above, the operation pieces 19 and 20 of the operation body 3 can be easily switched between the state in which the operation pieces 19 and 20 are protruded rightward toward the carriage 2 and the state in which they are protruded forward by the motors M1 and M2. .
The motors M1 and M2 are controlled by, for example, a sensor (a limit switch or the like) installed on the ground side detecting a predetermined portion of the carriage 2. The sensor detects the travel position of the carriage 2, and the drive control device controls the motors M1 and M2 based on the detection information. In addition, the kind, number, and installation position of a sensor and the number and position of the detection location of the trolley | bogie 2 are not limited to a specific thing.
Therefore, the distance that the carriage 2 travels in the transport direction E when the operation piece 19 is in contact with the projecting portion 6, and the distance that the carriage 2 travels in the transport direction E when the operation piece 20 is in contact with the projecting portion 7. Therefore, it is possible to easily change the ascending stroke and the descending stroke of the carriage 2B.
Such an effect is exhibited, for example, in a scene where it is desired to appropriately change the height of the transport table 2B to an optimum height according to the type of the transported object. Specifically, by changing the timing of switching the operation pieces 19 and 20 from the state of projecting rightward toward the carriage 2 to the state of projecting forward according to the type of the transported object, The height can be set to an optimum elevation height according to the type of the conveyed product.

Next, a configuration example in which the operation piece is retracted when an overload is detected will be described.
As shown in the schematic plan view of FIG. 11A, the operating body 3 is installed on a table J. The table J is slidable in the front-rear direction by the linear guides L3, L4, and is elastically supported by the compression coil spring K in the front-rear direction.
If the operation piece 20 (even the operation piece 19 is the same) protrudes forward at the normal position due to a failure of the limit switch or the like, the operation piece 20 protrudes rightward toward the carriage 2. In this state, the carriage 2 moves in the transport direction E from the normal state shown in FIG.
In such an overload state, as shown in the schematic plan view of FIG. 11B, the table J slides forward and the compression coil spring K is compressed. Thereby, since the sensor S detects an overload, the motor M1 and M2 shown in FIGS. 4 and 9 can be driven to bring the operating piece 20 into a retracted state in which it protrudes forward.

In the above description, an example in which the pulley 4 and the pulleys 13 to 15 that are rotating bodies rotate about the left-right axis is shown, but these pulleys may rotate about the vertical axis.
In such a configuration, the engaging member 5 includes a left engaging member that engages with the left portion of the rotating body and a right engaging member that engages with the right portion of the rotating body.
Then, by properly using driving of the left engaging member by the operating body and driving of the right engaging member by the operating body, the transport table 2B is raised or lowered.

In the above description, the rotating body is the pulley 4 and the engaging member is the timing belt 5. However, the rotating body may be a sprocket and the engaging member may be a chain, and the rotating body is engaged with a pinion. The member may be a rack. Any member may be used as long as the engaging member is engaged with the rotating body and the rotating member is rotated by the engaging member.
In the above description, an example in which two protrusions (one protrusion 7 on the upper engagement member 5A and one protrusion 6 on the lower engagement member 5B) is provided on the engagement member is shown. However, the number of protrusions provided on the engaging member may be one or more.
Here, the protrusion of the engaging member protrudes “side”. “Side” includes a radial direction around the conveyance direction axis (front-rear direction axis), a direction inclined without being orthogonal to the conveyance direction axis, and the like.

In the above description, an example in which the engagement member is driven by bringing the operation pieces 19 and 20 of the operation body 3 into contact with the protrusions 6 and 7 of the engagement member has been described. The driving is not limited to such a configuration, and may be a configuration in which the engaging member is driven by inserting the convex piece of the operating body into the hole of the belt as the engaging member.
However, according to the configuration in which the operating body is brought into contact with the laterally protruding portion provided on the engaging member, the driving operation of the engaging member by the operating body becomes more stable and reliable.
In the above description, the example in which the carriage 2B is moved up and down based on the relative position change in the conveyance direction with the operating body 3 fixed on the ground side while the carriage 2 travels is shown, but the carriage 2 is stopped. In this case, the relative position change may be caused by moving the operating body 3 backward or forward in the transport direction.

According to the configuration of the carriage conveyor having the lifting function as described above, the rotating body rotates by driving the engagement member by the operating body based on the relative position change in the transport direction between the carriage and the operating body on the ground side. .
Therefore, as the carriage travels, the engaging member is driven by the operating body arranged on the ground side, and thereby the rotating body rotates, so that the rotational force of the rotating body is transmitted to the transport table or the lifting support means for transport. The transport table is moved up and down by the lift drive means for moving the table up and down.
Alternatively, when the carriage is stopped, moving the operating body rearward or forward in the transport direction causes a relative position change in the transport direction between the carriage and the ground-side operating body. The member is driven to rotate the rotating body, and the transport table is moved up and down by the lift driving means.
Further, when the carriage is traveling, the operating body may be moved in the direction opposite to the traveling direction of the carriage. According to such a configuration, since the speed of the relative position change in the transport direction between the carriage and the operating body is increased, the lifting speed of the transport table can be increased.
As described above, based on the relative position change in the transport direction between the carriage and the ground-side operating body, the rotating body that provides the rotational force that is the input of the lifting drive means rotates.
Therefore, by changing the position of the operating body arranged at a predetermined position on the ground side of the transport path, the position for raising and lowering the transport base in the transport path can be easily changed, and the engaging member is driven by the operating body. By appropriately changing the distance to be carried out, the height of the transport table can be easily changed.
In addition, since the transport table moves up and down based on the relative position change in the transport direction between the carriage and the ground operating body, the vertical dimension can be kept small, so even if the lift stroke is large Low floor structure can be maintained.
In addition, since the transport table moves up and down based on the relative position change in the transport direction between the carriage and the ground-side operation body, the vertical dimension can be kept small. Even if the engaging member is provided below the upper surface plate of the base of the carriage, the low floor structure is maintained.

DESCRIPTION OF SYMBOLS 1 Carriage conveyor with raising / lowering function 2 Carriage 2A Base 2B Carriage 3 Operation body 4 Pulley (rotary body)
5 Timing belt (engaging member)
5A Upper engagement member 5B Lower engagement members 6, 7 Protruding portion 8 Magnet brake 9 One-way clutch 10 Top plate 11 Horizontal roller 12 Traveling wheels 13-17 Pulley 18 Timing belt 19, 20 Operation pieces 21A, 21B, 22 Gear 23 , 24 Link mechanism A Lift support means B Lift drive means C Transport path D Drive device E Transport direction GR Guide rails H1, H2 Output shafts I1, I2 Rotating shaft J Table K Compression coil springs L1-L4 Linear guides M1, M2 Orthogonal Shaft geared motor R Running rail S Sensor

Claims (7)

The carriage is equipped with a lifting support means for supporting the carriage so that it can be moved up and down in the vertical direction, and is a carriage conveyor having a lifting function for conveying the carriage along a conveyance path,
An operating body arranged at a predetermined position on the ground side of the transport path;
A rotating body rotatably arranged at a predetermined position of the carriage,
An engaging member that engages with the rotating body;
Elevating drive means for raising and lowering the transfer table by transmitting the rotational force of the rotating body to the transfer table or the elevating support unit;
With
A cart conveyor having a lifting function, wherein the rotating body rotates by driving the engagement member by the operating body based on a relative position change in a transport direction between the cart and the operating body. The rotating body rotates about a left-right axis;
The engaging member includes an upper engaging member that engages with an upper portion of the rotating body, and a lower engaging member that engages with a lower portion of the rotating body,
The cart conveyor having a lifting / lowering function according to claim 1, wherein the carriage is raised or lowered by properly using driving of the upper engaging member by the operating body and driving of the lower engaging member by the operating body. . The rotating body rotates about a vertical axis;
The engaging member includes a left engaging member that engages with a left portion of the rotating body, and a right engaging member that engages with a right portion of the rotating body,
The cart conveyor having a lifting / lowering function according to claim 1, wherein the carriage is raised or lowered by properly using driving of the left engaging member by the operating body and driving of the right engaging member by the operating body. The engagement member has one or more protrusions protruding sideways with respect to the transport direction,
The trolley conveyor according to any one of claims 1 to 3, wherein the operating body abuts against the protruding portion. A one-way clutch is provided between the rotating body and a brake that brakes the rotating body,
The cart having an elevating function according to any one of claims 1 to 4, wherein the one-way clutch transmits a braking force of the brake to the rotating body when the rotating body rotates in a direction in which the transport table descends. Conveyor.   The trolley conveyor according to claim 5, wherein the brake is a magnet brake.   The cart conveyor according to any one of claims 1 to 6, wherein the rotating body and the engaging member are provided below an upper surface plate of a base of the cart.

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