JP2531979B2 - Transporter with lifter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a transporter with a lifter, in which a lifter for supporting an object to be transported is provided on a transporting movable body driven by a propelling means on a travel route side. It is about the body.

(Prior Art and Problems Thereof) When the transporting movable body driven by the propelling means on the travel route side as described above is used as a vehicle body transporting means in, for example, an automobile assembly line, parts are assembled to the vehicle body. It is desirable to change the height of the automobile body on the transportation vehicle according to the height, but installing a lifter that can be driven up and down by a power unit on the transportation vehicle as described above, Since the power supply means and the control signal transmission means for the power unit are required, the equipment cost becomes very high, which is not practical.

(Means for Solving the Problem) An object of the present invention is to provide a transporting vehicle with a lifter capable of solving the above-mentioned conventional problems, and the means will be described later in an embodiment. The lifter 4 is provided on the transfer moving body 1 driven by the propelling means on the travel route side, and is a lifter 4 for supporting an object to be transferred. Supporting means 17 for supporting up and down, lifting operation portions 19a, 19b for externally applying an operating force for lifting the loading platform 16, and a plurality of stoppers 33 for preventing the loading platform 16 from descending at a plurality of heights.
Each of the stoppers 33a, 33b is provided with a and 33b, and each of the stoppers 33a, 33b can be switched between an operating position for receiving the loading platform 16 and a non-operating position for allowing the loading platform 16 to move up and down. It has a configuration including 20a and 20b.

(Operation of the Invention) Although the cargo bed 16 supporting the transported object descends due to gravity, one of the stoppers 33a and 33b prevents the cargo bed 16 from stopping, so that the cargo bed 16 stops at a predetermined height. The transported object is supported at a predetermined height. When changing the supporting height of the transported object, that is, the height of the loading platform 16, the loading platform 16 is manually or by an actuator such as a cylinder arranged on the side of the traveling path via the lifting operation units 19a and 19b.
Lift against gravity. In such a state, the switching operation sections 20a and 20b are operated manually or by an actuator such as a cylinder arranged beside the traveling path to move the load platform 16
The positions of the stoppers 33a and 33b are switched to a state in which the stoppers 33a and 33b can be received at a desired height. After that, when the loading platform lifting operation force applied to the lifting operation units 19a and 19b is released and the loading platform 16 is lowered by gravity, the working position is switched among the plurality of stoppers 33a and 33b.
The platform 16 is received by the two stoppers,
The height change will be completed.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a pallet-shaped moving vehicle for transportation, which includes a pair of left and right free wheels 2 near the front and rear ends thereof, and a lifter 4 at an upper portion thereof, and a pair of left and right free wheels. Guide pins 5 and 6 are provided at intermediate positions of 2, respectively. Reference numerals 7 and 8 are lifting operation means for lifting the guide pins 5 and 6.

As shown in FIG. 2 and FIG.
A guide rail 9 for a guide trolley is laid under the floor on the traveling route of. On this guide rail 9,
Two front and rear guide trolleys 10 and 11 are movably supported with respect to one transporting movable body 1 via a supporting horizontal shaft wheel 12 and a steady rest vertical shaft roller 13, respectively. The 11 is provided with a vertical pin hole into which the guide pins 5 and 6 are fitted. Therefore, by lowering the guide pins 5 and 6 to the lower limit position,
The lower end portions of 5, 6 are fitted into the pin holes of the guide trolleys 10, 11, respectively, and the front and rear two positions of the transporting movable body 1 (that is, the guide pin 5,
The movement path of the position (6) can be regulated by the guide trolleys 10 and 11.

Further, on the carriage 1, a pair of left and right pushed members 14a, 14b are provided so as to project downward at a position closer to the front guide pin 5 than a center position in the front-rear direction between the pair of front and rear guide pins 5, 6. Secondary conductors for linear motors on the left and right sides
15a and 15b are attached. Therefore, a propelling means provided with a pusher for pushing the transporting movable body 1 via the backed member 14a or 14b on the traveling route side of the transporting movable body 1 regulated by the guide trolleys 10 and 11, and By disposing the linear motor main body facing the secondary conductor for the linear motor, it is possible to drive the transporting movable body 1 at a predetermined speed along the traveling path by the pusher or the linear motor.

The lifter 4 is, as shown in FIGS. 2 and 3,
A loading platform 16 for supporting an object to be conveyed, a supporting means 17 for supporting the loading platform 16 so as to be able to move up and down, and a stopper mechanism 18 for blocking lowering of the loading platform 16 at a plurality of heights and capable of switching receiving heights.
Further, lifting operation portions 19a, 19b for externally applying an operating force for lifting the cargo bed 16 are provided on both left and right sides of the cargo bed 16.

The support means 17 includes a pair of links 21a, 21b and 22a, 2
2b is composed of a pair of left and right pantograph links 21 and 22 pivotally attached to each other in a X-shape with a common horizontal support shaft 23. The lower ends of the outer links 21a and 22a are horizontal support shafts 24 with fixed positions, and are movable bodies for transport. It is rotatably supported by the base 25 on one side, and the upper ends of the inner links 21b, 22b are rotatably supported by a horizontal support shaft 26 for fixing the position of the loading platform 16. In addition, at the upper end of each outer link 21a, 22a,
A guide roller 28 fitted to the roller guide 27 in the front-rear direction provided in 6 is pivotally supported by a common horizontal support shaft 29,
At the lower end of each inner link 21b, 22b, a guide roller 31 fitted to a front-back roller guide 30 provided on the base 25 is pivotally supported by a common horizontal support shaft 32. The support means 17 enables the loading platform 16 to move up and down while maintaining a horizontal posture, and at the time of raising and lowering, the guide rollers 28 and 31 move back and forth inside the roller guides 27 and 30, respectively.

The stopper mechanism 18 is disposed on the roller guide 30, and is provided with two stoppers 33a which are vertically movable at two intermediate positions in the lengthwise direction (front-back direction) of the roller guide 30.
33b, springs 34a, 34b for urging these stoppers 33a, 33b downward to hold them in an operating position projecting in the movement path of the guide roller 31, and to serve as receiving seats for these springs 34a, 34b, respectively. It is composed of switching operation parts 20a, 20b that are horizontally and fixedly projected from the stoppers 33a, 33b, and these switching operation parts 20a, 20b cause the stoppers 33a, 33b to act on the loading platform 1 and the loading platform 1.
It is possible to externally apply an operation force for switching to a non-acting position that allows lifting and lowering of 6.

In addition, the stopper mechanism 18 is provided on one side of the roller guide.
Although it is illustrated that only the roller guides 30 are arranged side by side, the roller guides 30 may be arranged side by side on both roller guides 30.

The loading platform 16 descends due to gravity, but at this time, the guide rollers 28 and 31 axially supported by the links 21a, 21b and 22a, 22b of the pantograph links 21, 22 are respectively the roller guides 2
Rolls in the rear of 7,30 (away from the horizontal support shafts 24,26). Therefore, as shown in FIGS. 2 and 3, the carrier 16 is supported at the low level L by receiving the guide roller 31 by the stopper 33a on the rear side among the stoppers 33a, 33b of the stopper mechanism 18. The loading platform 16 is supported at a high level H by receiving the guide roller 31 by the stopper 33b on the front side. Of course, when the guide roller 31 is rolled to the stroke limit further rearward than the stopper 33a on the rear side, the loading platform 16 is held at the lower limit position further lowered than the low level L.

As described above, the stoppers 33a and 33b of the stopper mechanism 18 are
By selectively using, the support height of the loading platform 16 can be set to 3
It is possible to switch to stages, but this loading platform 10
The switching of the support height of can be performed as follows.

That is, if the transporting mobile unit 1 is stopped at an arbitrary position in the travel route or at a loading platform height switching position set in the travel route, a pair of left and right lifting operation units 19a, 19
The b is lifted manually or by an actuator such as a cylinder arranged on the traveling route side (on the floor surface), and the loading platform 16 is raised to the ascent limit. In such a state, the switching operation unit 20a,
20b is lifted manually or by an actuator such as a cylinder arranged on the traveling route side (on the floor surface), and all the stoppers 33a, 33b are lifted to the rising limit position against the biasing force of the springs 34a, 34b. Next, the lifting operation unit 19a,
The platform 16 is manually or via the actuator 19b lowered to a predetermined height, for example, the bell L, and the lifting operation force applied to the switching operation sections 20a and 20b is released in this state. As a result, the stopper 33a is
It is lowered to the lower limit by the urging force of 4a and is located immediately after the guide roller 31, and the stopper 33b in the front is the guide roller 31.
It will be on the upper side of. After this, the lifting operation unit 19
By releasing the lifting operation force applied to the a and 19b, the guide roller 31 that tries to move rearward as the load platform 16 descends is received by the stopper 33a, so that the load platform 16 is supported at the low level L. Will be.

When it is desired to support the platform 16 at a high level H, the operating unit 20 is switched to a state in which the platform 16 is lifted to the upper limit position.
The lifting operation force applied to a and 20b is released to lower both stoppers 33a and 33b to the lower limit position, and thereafter, the lifting operation force applied to lifting operation sections 19a and 19b is released, whereby Since the guide roller 31 which is going to move rearward with the downward movement is received by the front stopper 33a, the bed 16 is supported at the high level H. Further, when it is desired to lower the platform 16 to the lower limit position lower than the low level L, the platform 16 is lowered while all the stoppers 33a and 33b are raised to the upper limit position by the switching operation units 20a and 20b. Let the cargo bed 16
After reaching the descent limit, the lifting operation force applied to the switching operation parts 20a, 20b is released and all the stoppers 33a, 33
You can lower b.

In addition, the supporting means 17 for supporting the loading platform 16 so as to be able to move up and down, the loading platform
The stopper mechanism 18 for stopping the lowering of 16 at a plurality of heights and having a freely switchable receiving height, the lifting operation portions 19a, 19b provided on the loading platform 16, and the switching operation portions 20a, 20b of the respective stoppers 33a, 33b in the stopper mechanism 18 are Each is not limited to the specific structure of the above embodiment. Of course, the number of stoppers in the stopper mechanism 18 is not limited to the above embodiment.

(Effects of the Invention) As described above, the transporting vehicle with lifter according to the present invention is
By manipulating the lifting operation part of the loading platform and the switching operation part of each stopper manually or by an appropriate actuator arranged on the travel route side, the loading platform can be adjusted to an arbitrary height within a plurality of preset heights. It can be easily switched, and the supporting height of the transported object supported by the loading platform can be changed according to the situation so that various operations can be easily performed on the transported object, but the maximum effect is In addition, it is not necessary to provide a power unit for raising and lowering the loading platform on the transporting movable body, and it is possible to significantly reduce the cost of the entire transporting facility configured by using a plurality of transporting movable bodies with lifters. is there.

[Brief description of drawings]

FIG. 1 is a plan view of the transporting mobile body, FIG. 2 is a vertical sectional front view showing the transporting mobile body and its guiding mechanism, FIG. 3 is a vertical side view of the transporting mobile body, and FIG. 4 is a transporting movement. It is a vertical section side view showing a guide pin and a guide trolley of a body. 1 ... moving body for transport, 2 ... free wheel, 4 ... lifter, 5,6 ... guide pin, 10,11 ... guide trolley, 14
a, 14b ... Pushed member, 15a, 15b ... Secondary conductor for linear motor, 16 ... Luggage bed, 17 ... Support means, 18 ... Stopper mechanism, 19a, 19b ... Luggage bed lifting operation part, 20a, 20b ...
… Stopper switching operation part, 21,22 …… Pantograph link, 21a-22b …… Link, 23,24,29,32 …… Horizontal support shaft, 27,30 …… Roller guide, 28,31 …… Guide roller, 33a, 33b …… Stoppers, 34a, 34b …… Springs.

Claims (1)

(57) [Claims] 1. A lifter provided on a transporting movable body driven by a propelling means on a travel route side, which comprises a loading platform for supporting an object to be transported, and a supporting means for supporting the loading platform so that the loading platform can be moved up and down. A lifting operation unit for externally applying an operating force for lifting the cargo bed and a plurality of stoppers for preventing the lowering of the cargo bed at a plurality of heights, each stopper allowing an operation position for receiving the cargo bed and lifting and lowering of the cargo bed. A transporting vehicle with a lifter, which is switchable to a non-actuated position and has a switching operation unit for externally applying the switching operation force.