JP6728967B2 - Cart conveyor with lifting function - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley conveyor that can raise and lower a conveyed product on a trolley to a height suitable for work.

2. Description of the Related Art In an article assembly line or the like, a trolley conveyor is used that can raise and lower a conveyed product (for example, a vehicle body) to a height suitable for a component assembly work.
In such a trolley conveyor having an elevating function, a pedestal on which a conveyed object is placed is supported so as to be vertically movable in a vertical direction as a configuration in which the conveyed object is moved up and down by traveling power without having power on the dolly side. There is one in which a cam driven roller is provided in the lifting support means (cross link mechanism) (for example, refer to Patent Document 1). With such a configuration, as the trolley travels, the cam driven roller rolls up and down on the inclined surface on the cam rail laid on the ground, so that the carrier table supported by the elevating and lowering support means is moved. Move up and down.

JP, 2006-44925, A

In the trolley conveyor having the elevating function as in Patent Document 1, since the position and shape of the cam rail laid at a predetermined position on the ground side of the transfer path are fixed, the position for raising and lowering the transfer table in the transfer path and the rising height are limited. To be done.
When changing the position for raising and lowering the conveyance table in the conveyance path or the rising height with the configuration as in Patent Document 1, the position of the cam rail is changed to be laid, or the cam rail is removed and a differently shaped cam rail is laid. It is possible to lay the cam rail again. However, the work of re-laying the cam rails is troublesome, so that the operating rate of the manufacturing line is reduced, and if the cam rails of various shapes are provided, the manufacturing cost is increased.
Further, in the truck conveyor having the lifting function as in Patent Document 1, it is necessary to project the cam driven roller downward and to lay a cam rail having an inclined surface for rolling the cam driven roller on the ground side. Therefore, the low floor structure cannot be maintained especially when the lifting stroke is large.

Therefore, in view of the above situation, the present invention has a problem to be solved by raising and lowering a carrier table in a carrier path in a carriage conveyor having an elevating function of elevating and lowering a conveyed object by traveling power without having power on the carriage side. It is to facilitate the change of the position and the rising height, and to maintain the low floor structure even when the lifting stroke is large.

In order to solve the above problems, the trolley conveyor having an elevating function according to the present invention is provided with an elevating and lowering support means for supporting a conveyance table so as to be vertically movable in a vertical direction, and conveys the trolley along a conveyance path. A trolley conveyor having a lifting function,
The operation body is provided at a predetermined location on the ground side of the transportation path,
The trolley is
A rotator disposed rotatably at a predetermined position of the trolley, which does not change the position of the rotation axis with respect to the trolley, and which provides a rotational force that is an input of the lifting drive means ;
An engaging member that engages with the rotating body and extends in the transport direction of the carriage ,
And the lifting drive means for lifting the transport stand by transmitting the rotational force of the rotating body in the transport stand or the lift support means,
Equipped with
The operating body is in contact or inserted in the engaging member, in the state where the operating tool is in contact with or inserted into the engagement member, said conveying direction of the relative position between the carriage and the operating body by changing, more the rotating body to the engaging member which engages with the rotating body characterized in that the rotating (claim 1).

According to such a configuration, the operating body is brought into contact with or inserted into the engaging member, and the operating body is kept in the state of being brought into contact with or inserted into the engaging member, and the conveying direction between the trolley and the operating body on the ground side is maintained. by the position of the relative changes, more rotator rotates the engaging member for engaging the rotating member.
Thus, with the travel of the carriage, the engagement member to the operation member disposed on the ground side is abutting or inserted, in the state in which operation body is in contact with or inserted into the engagement member, the carriage and the ground-side Since the rotating body rotates by changing the relative position of the operating body in the conveying direction, the elevating and lowering drive means elevates and lowers the conveying table by transmitting the rotational force of the rotating body to the conveying table or the elevating and supporting means. To do.
Alternatively, when the dolly is stopped, the relative position in the carrying direction between the dolly and the operation body on the ground side is changed by moving the operating body rearward or forward in the carrying direction, so that the rotating body is engaged. The rotating body is rotated by the engaging member that is fitted, and the carrier is moved up and down by the lifting drive means.
Further, the operating body may be configured to move in a direction opposite to the traveling direction of the truck when the truck is running. According to such a configuration, the relative position change speed of the carriage and the operating body in the transport direction is increased, so that the vertical speed of the transport base can be increased.
As described above, the rotating body that provides the rotational force, which is the input of the elevating and lowering drive unit, rotates based on the relative position change of the carriage and the operation body on the ground side in the transport direction.
Therefore, by changing a position of an operator positioned on the ground a predetermined position of the transport path, it is possible to change the position for raising and lowering the transfer platform in the transport path easily, operating body on the engaging member those The height of the carrier can be easily changed by appropriately changing the distance for maintaining the contacted or inserted state .
In addition, since the carrier moves up and down based on the relative position change of the carriage and the operation body on the ground side in the carrying direction, the vertical dimension can be kept small, so that even when the lifting stroke is large. A low floor structure can be maintained.

Here, the rotating body rotates around a horizontal 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,
Due to the fact that the operating body in the state that is in contact with or inserted into the upper engagement member, the transport direction of the relative position between the carriage and the operating body is changed, the engagement to be engaged with the rotary member rotation of the rotary member by member, and in the state where the operating tool is in contact with or inserted into the lower engaging member, due to the fact that the transport direction of the relative position between the operating body and the bogie is changed It is preferable that the rotation of the rotating body is selectively used by the engaging member that engages with the rotating body to raise or lower the carrier (claim 2).
Alternatively, the rotating body rotates about a vertical axis,
The engagement member includes a left engagement member that engages with a left portion of the rotating body, and a right engagement member that engages with a right portion of the rotating body,
Due to the fact that the operating body in the state that is in contact with or inserted into the left engaging member, the transport direction of the relative position between the carriage and the operating body is changed, the engagement to be engaged with the rotary member rotation of the rotary member by member, and due to the fact that the operating body in the state that is in contact with or inserted into the right engaging member, the relative position in the transport direction of the operating body and the bogie is changed, The carrier may be raised or lowered by properly using the rotation of the rotating body by the engagement member that engages with the rotating body (claim 3).

According to such a configuration, the operating body makes contact with or inserts into the upper engaging member that engages with the upper portion of the rotating body , and between the carriage and the operating body while maintaining the contact or insertion. Change in relative position in the transport direction, contact or insertion to a lower engagement member that engages with the lower portion of the rotating body, and change in the transport direction between the carriage and the operating body while holding the contact or insertion. Depending on the change in relative position , or contact or insertion by the operating body to the left side engaging member that engages with the left part of the rotating body , and the trolley and operating body while holding the contact or insertion. Of the relative position in the conveyance direction with respect to the right-side engaging member that engages with the right part of the rotating body, and the conveyance of the trolley and the operating body while holding the contact or insertion. The carrier table is moved up or down depending on the change in the relative position in the direction .
Therefore, even if the traveling direction of the carriage is one direction, it is possible to easily realize a desired operation of raising and lowering in one section.

Further, the engaging member has one or more projecting portions that project laterally with respect to the transport direction,
It is further preferable that the operating body is in contact with the protruding portion (claim 4 ).
According to this structure, the operating member is driven by bringing the operating member into contact with the laterally protruding portion provided on the engaging member, so that the operating member engages the engaging member. The driving operation of is more stable and reliable.

Furthermore, a one-way clutch is provided between the rotating body and a brake that brakes the rotating body,
It is more preferable that 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 carrier is lowered.
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 carrier lowers, the braking force of the brake is applied to the rotating body. And the braking force of the brake is not transmitted to the rotating body when the rotating body rotates in the direction in which the carrier is raised.
Therefore, when the carrier is raised, the brake does not act and the force to resist the brake is not required, so the operation is light and smooth, and when the carrier is lowered and stopped, the brake works and Hold.
In this way, whether or not the braking force of the brake is transmitted is switched by the one-way clutch according to the direction in which the carrier is moved up and down. Therefore, it is not necessary to electrically control the brakes to be turned on/off depending on whether the carrier is raised or lowered or stopped, so that the manufacturing cost can be reduced.

Furthermore, it is even more preferable that the brake is a magnet brake (claim 6).
According to such a configuration, since the magnet brake is a non-contact type that generates torque by magnetic force, it does not wear, so that the reliability of the brake that operates when the carrier table is lowered and stopped can be ensured for a long period of time.

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 (claim 7).
According to such a configuration, since the rotating body and the engaging member are located below the upper surface plate of the base of the carriage, the rotating body and the engaging member do not project onto the upper surface plate, and thus the upper body is mounted on the upper surface plate. There is no hindrance to the work to be performed.
In addition, since the carrier moves up and down based on the change in the relative position of the carriage and the operation body on the ground side in the transport direction, the vertical dimension can be kept small, so Even if it is provided below the top plate of the base, the low floor structure is maintained.

As described above, according to the trolley conveyor having the raising/lowering function according to the present invention, in the trolley conveyor having the raising/lowering function of raising and lowering a conveyed object by traveling power without having power on the trolley side, mainly Produce an effect.
(1) conveying direction of the relative positions of the operation of the truck and the ground side by changes, since more rotating body engaging member for engaging the rotating member is rotated, located on the ground a predetermined position of the conveying path By changing the position of the operating body to be moved, it is possible to easily change the position of raising and lowering the transport base in the transport path, and by appropriately changing the distance at which the engaging member is driven by the operating body, The height of the can be easily changed.
(2) Since the carrier is moved up and down based on the change in the relative position of the carriage and the operation body on the ground side in the carrying direction, the vertical dimension can be kept small, so that even when the lifting stroke is large. A 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. Similarly, it is a front view. It is a schematic plan view showing an operating body, a rotating body, an engaging member, and the like, and shows a state before an operating piece on the lower side of the operating body comes into contact with a lower protrusion of the engaging member. It is a schematic front view showing a rotating body, an engaging member, and the like, and shows a state in which a lower protruding portion is located at a front end portion and an upper protruding portion is located at a rear end portion. It is a schematic plan view showing an operating body, a rotating body, an engaging member, and the like, and shows a state in which the operating body is in contact with a protruding portion. It is the schematic seen from the back which shows the state where the operation piece under the operation body was made to project to the right. It is a schematic front view showing a rotating body, an engaging member, and the like, and shows a state in which an upper protruding portion is located at a front end portion and a lower protruding portion is located at a rear end portion. It is a schematic plan view showing an operating body, a rotating body, an engaging member, and the like, and shows a state before the operating piece on the upper side of the operating body comes into contact with the protruding portion on the upper side of the engaging member. It is the schematic seen from the back which shows the state where the upper operation piece of the operation body was made to project to the right. 6A and 6B are schematic plan views for explaining the operation of retracting the operation piece when an overload is detected, FIG. 6A showing a normal state, and FIG. 6B showing a state in which the table supporting the operating body slides due to the overload. ..

An embodiment according to the present invention will be described below with reference to the drawings.
In the present specification, front, rear, left and right are defined in a state of facing the transport direction of the carriage (for example, refer to arrow E in FIG. 1), and a view seen from the left is a front view.

A trolley conveyor 1 having an elevating function according to an embodiment of the present invention is shown in a plan view of FIG. A trolley 2 according to an embodiment of the present invention is shown in a plan view of FIG. 2 and a front view of FIG.
The trolley conveyor 1 having an elevating function conveys the trolleys 2, 2,... In the conveyance direction E along the conveyance path C by the drive device D. Then, it is operated by the operation body 3 arranged at a predetermined position on the ground side of the transport path C, and the transport base 2B on which the transported object is placed can be moved up and down.

Next, a configuration example of the carriage 2 will be described.
The trolley|bogie 2 equips the center of the lower surface of the base 2A in the left-right direction with horizontal rollers 11,11, and equips the front-back and left-right of the lower surface of the base 2A with traveling wheels 12,12,.
The horizontal rollers 11, 11 are guided by the guide rail GR laid along the transport route C, and the traveling wheels 12, 12,... Roll on the left and right traveling rails R, R. It is possible to drive along.
By driving the side surface of the carriage 2 by a driving device D which is a friction roller type driving device, the carriage 2 moves along the transport path C.
Here, the driving device D is not limited to the friction roller type driving device, and may be a power chain type driving device or the like.

The dolly 2 is provided with an elevating and lowering support means A for supporting a carrier table 2B on which a not-shown object is placed so as to be vertically movable in a vertical direction on a base 2A on which an operator rides and works. The elevating and lowering support means A is composed of an X-shaped symmetrical link that expands and contracts in the vertical direction (for example, refer to JP-A-2005-230960), a linear guide, or the like.
Further, the trolley 2 is provided with an elevating and lowering driving means B for transmitting the rotational force of the pulley 4 which is a rotating body to the conveying table 2B or the elevating and lowering supporting means A to elevate and lower the conveying table 2B. The elevating and lowering driving means B is composed of, for example, a driving mechanism (see, for example, US Pat. No. 6,547,216) that elevates and lowers by combining a spiral vertical plate and a horizontal plate.
The lifting drive means B is not limited to such a configuration, and the lifting support means A is driven by winding or unwinding a flexible long member such as a belt to move the carrier table 2B up and down. (For example, refer to Japanese Unexamined Patent Application Publication No. 2009-269716).
Alternatively, a ball screw or the like may be adopted as the elevating drive means B. In the case of using the ball screw, for example, the lower end of the ball screw shaft extending in the vertical direction is used as the input shaft, and the ball screw is rotated by rotating the ball screw. It is sufficient to move up and down the nut and connect the carriage 2B and the like to the nut.

Next, a configuration example of the pulley 4 and the engaging member 5 which are the 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 rotatable body that can rotate about the left-right axis, is the front left end of the base 2A of the carriage 2. Placed in the department.
Further, pulleys 13 to 15 rotatable about the left-right axis are arranged at predetermined positions. That is, the pulley 13 is arranged at a lower rear position of the pulley 4, the pulley 14 is arranged at a position separated rearward from the pulley 13, and the pulley 15 is arranged above the pulley 14 separated rearward from the pulley 4.
The pulley 4 and the pulleys 13 to 15 are timing pulleys, and an endless timing belt 5, which is an engaging member that engages with the pulley 4 that is a rotating body, is stretched over them.
As shown in the front view of the bogie 2 in FIG. 3, the pulley 4 which is a rotating body, the timing belt 5 which is an engaging member, and the like are located below the top plate 10 of the base 2A of the bogie 2. Therefore, since the rotating body and the engaging member do not project onto 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 the upper engaging 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. Is a lower side engaging member 5B that engages with. Therefore, the upper engagement member 5A and the lower engagement member 5B move in opposite directions 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.
As shown in the schematic views seen from the rear of FIGS. 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 that is a rotating body is attached to the pulleys 4 by the pulleys 16 and 17 and the timing belt 18 that is wound around the pulleys 16 and 17. A magnet brake 8 for braking is connected.
A one-way clutch 9 is mounted between the rotary 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 of lowering the transport base 2B, and the brake when the pulley 4 rotates in the direction of raising the transport base 2B. The braking force of 8 is not transmitted to the pulley 4.
Therefore, when the carrier table 2B is raised, the brake 8 does not act, and the force that resists the brake 8 is not required, so the operation is light and smooth, and when the carrier table 2B is lowered and stopped, the brake 8 is applied. It acts and holds the carrier 2B.
In this way, the one-way clutch 9 switches whether or not the braking force of the brake 8 is transmitted, depending on the direction in which the carrier 2B moves up and down. Therefore, it is not necessary to electrically control the brake 8 to be turned on and off when the carrier table 2B is raised and lowered or stopped, so that the manufacturing cost can be reduced.
Here, it is desirable that the brake 8 that brakes the pulley 4, which is a rotating body, is capable of adjusting the braking torque. If the braking torque of the brake 8 is adjusted and the force required for lowering the carrier 2B is set to be small, the carrier 2B can be manually lowered.
Further, since the magnet brake 8 is used and the magnet brake 8 is a non-contact type that generates torque by magnetic force, it does not wear, and therefore the reliability of the brake that is operated when the carrier table 2B is lowered and stopped is maintained for a long period of time. Can be secured.

Next, a configuration example of the operating body 3 arranged at a predetermined location on the ground side will be described.
The operating body 3 drives the timing belt 5 which is an engaging member to rotate the pulley 4 which is a rotating body.
As shown in the schematic plan views of FIGS. 4 and 9 and the schematic views of FIGS. 7 and 10 viewed from the rear, the operation body 3 includes an operation piece 19 that abuts on the protrusion 6 of the lower engagement member 5B. An operation piece 20 that comes into contact with the protruding portion 7 of the upper engagement member 5A is provided.

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

Next, the operation of raising and lowering the carrier table 2B at a predetermined position on the carrier path will be described.
With the operation piece 19 on the lower side of the operation body 3 projecting to the right toward the carriage 2 shown in the schematic plan view of FIG. 4 and the schematic view seen from the rear of FIG. When traveling to, the protrusion 6 contacts the rear surface of the operation piece 19 as shown in the schematic plan view of FIG.
With the movement of the carriage 2 in the transport direction E, the lower protrusion 6 moves rearward with respect to the carriage 2 as shown by an arrow F1 in FIGS. Along with that, the upper protrusion 7 moves forward with respect to the carriage 2 as indicated by an arrow F2 in FIGS. 5 and 6.
With the movement of the protrusions 6 and 7, in the timing belt 5 which is an engaging member, the upper engaging member 5A moves forward and the lower engaging member 5B moves backward, so that the pulley which is a rotating body is used. 4 rotates like the arrow H in FIG.
Therefore, since the lifting/lowering drive means B is driven by the rotational force of the pulley 4, the carrier table 2B is raised.

When the carrier table 2B is raised, as shown in the schematic front view of FIG. 8, the upper protrusion 7 is located in the front and the lower protrusion 6 is located in the rear.
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 contacts 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.
With the movement of the projecting portions 7 and 6, the timing belt 5, which is an engaging member, moves the upper engaging member 5A rearward and moves the lower engaging member 5B 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 lifting/lowering drive means B is driven by the rotational force of the pulley 4, the carrying table 2B is lowered.

As described above, the timing belt 5 that is the engaging member is based on the relative position change 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 that is arranged at a predetermined location on the ground side. By driving the operating body 3, the pulley 4, which is a rotating body, rotates.
Then, the rotation direction of the pulley 4 can be changed by selectively driving the upper engagement member 5A by the operating body 3 and driving the lower engagement member 5B by the operating body 3, so that the carrier table 2B can be raised and lowered. You can switch.
In this way, the transport base 2B moves up or down depending on whether the operation body 3 drives the upper engagement member 5A or the lower engagement member 5B, so that the carriage 2 travels in one direction. In one section, desired movements of ascent and descent can be easily realized.

As described above, the operation pieces 19 and 20 of the operation body 3 can be easily switched between the state in which they are projected to the right toward the carriage 2 and the state in which they are projected to the front by the motors M1 and M2. ..
The control of the motors M1 and M2 is performed, for example, by a sensor (a limit switch or the like) installed on the ground side detecting a predetermined position of the carriage 2. The sensor detects the traveling position of the dolly 2, and the drive control device controls the motors M1 and M2 based on the detected information. The type, number and installation position of the sensors, and the number and positions of detection points of the carriage 2 are not limited to particular ones.
Therefore, the distance that the trolley 2 travels in the transport direction E with the operation piece 19 in contact with the protrusion 6, and the distance that the trolley 2 travels in the transport direction E with the operation piece 20 in contact with the protrusion 7. Can be changed as appropriate, so that the raising stroke and the lowering stroke of the carrier 2B can be easily changed.
Such an effect is exhibited, for example, in a scene in which it is desired to appropriately change the height of the carrier 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 in which they are projected to the right toward the carriage 2 to the state in which they are projected to the front in accordance with the type of transported object, The height can be set to an optimum ascending/descending height according to the type of transported object.

Next, a configuration example of retracting the operation piece when overload is detected will be described.
As shown in the schematic plan view of FIG. 11A, the operating body 3 is installed on the table J. The table J is slidable in the front-rear direction by the linear guides L3 and L4, and is elastically supported by the compression coil spring K in the front-rear direction.
When the operation piece 20 (the same applies to the operation piece 19) is not retracted to the front at the regular position due to a malfunction of the limit switch or the like, the operation piece 20 protrudes to the right toward the carriage 2. With this state maintained, the carriage 2 moves in the transport direction E from the normal state shown in FIG.
In such an overloaded state, as shown in the schematic plan view of FIG. 11B, the table J slides forward and the compression coil spring K is compressed. As a result, the sensor S detects the overload, and by driving the motors M1 and M2 shown in FIGS. 4 and 9, it is possible to bring the operating piece 20 into the retracted state in which it is projected 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 horizontal axis has been shown, but these pulleys may also rotate about the vertical axis.
In such a configuration, the engagement member 5 is composed of a left engagement member that engages with the left portion of the rotating body and a right engagement member that engages with the right portion of the rotating body.
Then, by selectively driving the left engagement member driven by the operating body and the right engagement member driven by the operating body, the transport base 2B moves up or down.

In the above description, an example in which the rotating body is the pulley 4 and the engaging member is the timing belt 5 has been shown, but the rotating body may be a sprocket and the engaging member may be a chain, and the rotating body is a pinion. The member may be a rack. It suffices that the engaging member engages with the rotating body, and the rotating body is rotated by the engaging member.
In the above description, an example in which the engaging member is provided with two protrusions (one protrusion 7 on the upper engagement member 5A and one protrusion 6 on the lower engagement member 5B) has been shown. However, the number of protrusions provided on the engaging member may be one or more.
Here, the protruding portion of the engaging member projects “sideways”. “Lateral” includes a radial direction around the transport direction axis (front-rear direction axis), a direction inclining without being orthogonal to the transport 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 drive of 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 which is 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 2 is moved up and down based on the relative position change in the carrying direction with respect to the operation body 3 fixed on the ground side while the carriage 2 is running has been described, but the carriage 2 is stopped. In this case, the relative position change may be caused by moving the operating body 3 rearward or forward in the transport direction.

According to the configuration of the trolley conveyor having the lifting function as described above, the rotating body is rotated by driving the engaging member by the operating body based on the relative position change in the transport direction between the trolley 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 the rotating body is thereby rotated, so that the rotational force of the rotating body is transmitted to the carrier or the elevating and supporting means. The carrier table is moved up and down by the elevating and lowering drive means for elevating the table.
Alternatively, when the trolley is stopped, moving the operating body rearward or forward in the transport direction causes a relative position change in the transporting direction between the trolley and the ground-side operating body, so that the operating body engages. The member is driven to rotate the rotating body, and the elevator is moved up and down by the elevator drive means.
Further, the operating body may be configured to move in a direction opposite to the traveling direction of the truck when the truck is running. According to such a configuration, the relative position change speed of the carriage and the operating body in the transport direction is increased, so that the vertical speed of the transport base can be increased.
As described above, the rotating body that provides the rotational force, which is the input of the elevating and lowering drive unit, rotates based on the relative position change of the carriage and the operation body on the ground side in the transport direction.
Therefore, by changing the position of the operation body arranged at a predetermined position on the ground side of the transfer path, it is possible to easily change the position of raising and lowering the transfer table in the transfer path, and drive the engaging member by the operation body. By appropriately changing the distance to be carried, the height of the carrier can be easily changed.
In addition, since the carrier moves up and down based on the relative position change of the carriage and the operation body on the ground side in the carrying direction, the vertical dimension can be kept small, so that even when the lifting stroke is large. A low floor structure can be maintained.
Furthermore, since the carrier is moved up and down based on the relative position change of the carriage and the operation body on the ground side in the carrying direction, the vertical dimension can be suppressed to a small size, so that as shown in FIG. Even if the engaging member is provided below the upper surface plate of the base of the truck, the low floor structure is maintained.

1 Bogie Conveyor with Lifting Function 2 Bogie 2A Base 2B Conveyor 3 Operating Body 4 Pulley (Rotating Body)
5 Timing belt (engaging member)
5A Upper side engaging member 5B Lower side engaging member 6,7 Protrusion 8 Magnet brake 9 One-way clutch 10 Top plate 11 Horizontal roller 12 Running wheels 13 to 17 Pulley 18 Timing belt 19, 20 Operation piece 21A, 21B, 22 Gear 23 , 24 link mechanism A lifting support means B lifting drive means C transport path D drive device E transport direction GR guide rails H1, H2 output shafts I1, I2 rotary shaft J table K compression coil springs L1 to L4 linear guides M1, M2 orthogonal Axial geared motor R Traveling rail S sensor

Claims (7)

A trolley conveyor having an elevating function, which comprises a trolley equipped with a lifting support means for supporting the transport base so as to be vertically movable in a vertical direction, and transports the trolley along a transport path,
The operation body is provided at a predetermined location on the ground side of the transportation path,
The trolley is
A rotator disposed rotatably at a predetermined position of the trolley, which does not change the position of the rotation axis with respect to the trolley, and which provides a rotational force that is an input of the lifting drive means ;
An engaging member that engages with the rotating body and extends in the transport direction of the carriage ,
And the lifting drive means for lifting the transport stand by transmitting the rotational force of the rotating body in the transport stand or the lift support means,
Equipped with
The operating body is in contact or inserted in the engaging member, in the state where the operating tool is in contact with or inserted into the engagement member, said conveying direction of the relative position between the carriage and the operating body by changing carriage conveyor having a lifting function of more the rotating body to the engaging member to be engaged with the rotating body characterized in that the rotating. The rotating body rotates around a horizontal 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,
Due to the fact that the operating body in the state that is in contact with or inserted into the upper engagement member, the transport direction of the relative position between the carriage and the operating body is changed, the engagement to be engaged with the rotary member rotation of the rotary member by member, and in the state where the operating tool is in contact with or inserted into the lower engaging member, due to the fact that the transport direction of the relative position between the operating body and the bogie is changed The trolley conveyor having an elevating function according to claim 1, wherein the conveyor is raised or lowered by selectively using rotation of the rotating body by an engaging member that engages with the rotating body . The rotating body rotates about a vertical axis,
The engagement member includes a left engagement member that engages with a left portion of the rotating body, and a right engagement member that engages with a right portion of the rotating body,
Due to the fact that the operating body in the state that is in contact with or inserted into the left engaging member, the transport direction of the relative position between the carriage and the operating body is changed, the engagement to be engaged with the rotary member rotation of the rotary member by member, and due to the fact that the operating body in the state that is in contact with or inserted into the right engaging member, the relative position in the transport direction of the operating body and the bogie is changed, The trolley conveyor having an elevating function according to claim 1, wherein the conveyance table is raised or lowered by selectively rotating the rotation body by an engagement member that engages with the rotation body . The engagement member has one or more protrusions that protrude laterally with respect to the transport direction,
The trolley conveyor having an elevating function according to any one of claims 1 to 3, wherein the operating body is in contact with the protruding portion. A one-way clutch is provided between the rotating body and a brake that brakes the rotating body,
The trolley|bogie with the raising/lowering function in any one of Claims 1-4 which transmits the braking force of the said brake to the said rotary body by the said one-way clutch, when the said rotary body rotates in the direction which the said conveyance base descends. Conveyor. The trolley conveyor having a lifting function according to claim 5, wherein the brake is a magnet brake. The trolley conveyor having an elevating function 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 trolley.

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