JPS6245963Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a transportation system using a trolley in which a transportation trolley equipped with wheels that rolls on the floor is driven along a fixed path by a trolley propulsion means under the floor. It is related to the device.

In a conventional conveyance device using a trolley of this type, a slit is provided in the floor along the moving path of the trolley propelling the trolley, and a driven pin is provided projecting from the trolley through the slit to hang down within the moving path of the trolley propelling the trolley. The driven pin is pushed by a pusher provided on the trolley to propel the trolley along a predetermined path on the floor. However, in such conventional conveying devices, the driven pins are very long and are likely to break when the propulsive force becomes large, so that they cannot be used for conveying large objects. Furthermore, since the perpendicular driven pin is located between the slit provided in the floor surface and the truck, it is difficult to cover the area directly above the slit with a plate to prevent intrusion of foreign matter such as dust.

The present invention provides a trolley for a transport device using a trolley that can solve the above-mentioned problems, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a transport vehicle, which is equipped with a load support section 3 for supporting a transported object 2, and has flexible wheels that can freely roll on the floor at four locations, front, rear, left and right. It is equipped with 4. Reference numerals 5 and 6 refer to trolley connecting members hanging downward from the central position between the left and right wheels 4 at the front and rear of the trolley 1, which are configured in a U-shape in front with openings laterally, and are connected to the trolley running floor. U-shaped lower side 5 located above surface 7
A and 6a are provided with a vertical through hole 8 located at the center position in the width direction of the truck 1.
Reference numeral 9 denotes a front trolley unit, which consists of a leading trolley 13 and a bogie front connecting trolley 14, which are connected to each other by a connecting rod 12 with universal joints 10 and 11 at both ends. Reference numeral 15 denotes a rear trolley unit, which is composed of a bogie rear connecting trolley 19 and a rear end trolley 20, which are connected to each other by a connecting rod 18 having universal joints 16 and 17 at both ends. Each of the above trolleys 13, 14, 19, 20
are a pair of left and right, front and rear horizontal shaft wheels 22 to 25 that fit into a pair of left and right trolley running guide rails 21 installed below the bogie running floor 7, respectively.
and a pair of front and rear vertical shaft rollers 26 to 29 for steadying that fit between the lower sides of the guide rail 21.
Furthermore, the leading trolley 13 is provided with a driven pawl 30 that is vertically swingable, and the front trolley 14 and the rear trolley 19 are connected to the front and rear trolley connecting members 5 and 6 of the trolley 1. vertical shafts 31 and 32 that fit into the through holes 8, respectively;
The rear end trolley 20 is equipped with an operation piece 33 for stopping the following leading trolley 13. The vertical shafts 31 and 32 protruding from the trolley front connecting trolley 14 and the rear connecting trolley 19 are provided with stoppers whose vertical positions can be changed in the vertical positions of the lower sides 5a and 6a of the trolley connecting members. 34a, 34b and 35a, 35b are attached.

Reference numeral 36 denotes a drive trolley equipped with a pusher 37, which is movably supported by a pair of left and right guide rails 38 installed below the guide rail 21 and along the guide rail 21.
is connected to. Incidentally, flat rails 40 on which the free wheels 4 roll are laid flush with the bogie running floor 7.

Further, although shown by imaginary lines in FIG. 3, on the bogie running floor 7, the vertical shafts 31, 32 have guide slits 43 extending through them above the floor surface. A cantilevered inverted L-shaped cover plate 44 is provided to cover the trolley, and the free ends of the trolley connecting members 5 and 6 enter into the slit 43 from the side in a cantilevered manner on the lower side of the cover plate 44. It is configured as follows. Further, a curtain brush 45 is connected downward from the free side of the cover plate 44, and the lower side portions 5a, 6a of the trolley connecting members 5, 6 move while pushing down the curtain brush 45. ing.

In the conveying device configured as described above, the drive trolley 36 is moved by the arrow 41 by the drive chain 39.
By being moved in the direction, the pusher 37 automatically engages with the driven pawl 30 of the leading trolley 14, and the vertical shaft 31 and the trolley connecting member 5 are connected to the front trolley unit 9 including the leading trolley 14.
The transport vehicle 1, whose front portion is connected via the transport vehicle 1, is propelled in the same direction. The rear trolley unit 15 follows and moves while being towed by the carrier 1. At this time, two locations on the front and rear of the transport vehicle 1 are connected to the front connecting trolley 14 and the rear connecting trolley 19.
The trolley connecting members 5, 6 and the vertical shafts 31, 32
Since the transport vehicle 1 is connected via
will move along the trolley running guide rail 21 without swinging left or right.

In the storage line, a movable stopper disengages the driven claw 30 from the pusher 37 to stop one transport vehicle 1, so that the subsequent transport vehicle 1 is connected to the preceding stopped transport vehicle 1. The driven pawl 30 is moved by the pusher 37 by the rear end operating piece 33 of the rear trolley unit 15.
It is automatically disengaged and stopped. Then, the rear end trolley 20 on the preceding stopped transport vehicle side and the leading trolley 13 on the following transport vehicle side come into contact with each other to prevent both the front and rear transport vehicles 1 from approaching within a certain distance. It is possible to store the protruding objects 2 without colliding with each other.

In addition, as shown in FIG. 4, both the front and rear trolleys 14,
The vertical shafts 31 and 32 protruding from the shaft 19 can be configured to be swingable back and forth around the horizontal horizontal shaft 42. In this case, a pair of upper and lower stoppers 34a, 34b and 35 are attached to the vertical shafts 31, 32.
a, 35b, the trolley connecting member lower side 5a,
Upper stoppers 34a and 35a on the sides that prevent the vertical shafts 6a and the vertical shafts 31 and 32 from coming apart are essential.
Further, in the above embodiment, the connecting rods 12 and 18 are connected to the vertical shaft 3.
1 and 32, but it may be directly connected to both the front and rear trolleys 14 and 19 as shown in FIG.

Although the curtain brush 45 is not essential to the present invention, if the cover plate 44 and the curtain brush 45 are used together as in the embodiment, the slit 4
It is possible to more effectively prevent foreign matter such as dust from entering or falling below the floor surface.

The device of the present invention can be implemented as described above, and its characteristics include a trolley propulsion means (in the embodiment, trolley units 9 and 15 and a drive chain 39 with a pusher) that move on a fixed path under the floor surface. a vertical shaft protruding from the floor surface, passing through a slit formed in the floor surface and projecting above the floor surface, and a cantilever extending above the vertical shaft and covering the slit above the floor surface; A self-supporting transport trolley with an inverted L-shaped cover plate protruding from the top and wheels that roll on the floor includes a connecting member that cantilevers from the side onto the slit at the bottom of the cover plate. are connected in series, and the vertical shaft is fitted into a hole provided at the free end of the connecting member.

According to such a conveyance device using a trolley of the present invention, it is possible to use a self-supporting conveyance device equipped with wheels that roll on the floor, such as the conveyance device described in Japanese Patent Application Laid-Open No. 55-40145. Compared to a system in which a trolley that moves along a fixed path under the floor directly supports the object supporting platform above the floor without using a trolley, the trolley moving on a fixed path under the floor directly supports the object to be transported. Since there is no need to apply a vertical load, the trolley propulsion means, which must be installed under the floor, can be constructed to be lightweight and compact.Furthermore, the self-supporting carriage on the floor allows for stable handling of long and heavy objects. It can be well supported and transported.

Furthermore, a driven pin that connects the transporting trolley and the trolley propulsion means under the floor surface is divided into a vertical shaft on the trolley propelling means side and a connecting member on the transporting trolley side,
Since each pin is shortened, there is no risk of the vertical shaft or connecting member breaking or deforming even when transporting heavy objects, improving safety compared to the case of using a single long driven pin. . Furthermore, since the slit on the floor is covered by the cover plate, it is possible to significantly reduce the intrusion of foreign matter such as dirt into the trolley propulsion means under the floor through the slit.

[Brief explanation of the drawing]

Figure 1 is a partially longitudinal side view showing the state of use;
The figure is a plan view showing the transport vehicle and both the front and rear trolley units in the same state, FIG. 3 is a longitudinal sectional front view in the same state, and FIGS. 4 and 5 are side views of main parts showing modified examples. . 1... Transport truck, 4... Flexible wheels, 5, 6...
Trolley connecting member, 7... Trolley running floor surface, 8...
Through holes in the lower sides 5a and 6a of the trolley connecting member,
9, 15... Front and rear trolley units, 10, 1
1, 16, 17... Universal joint, 12, 18... Connection rod, 13, 14, 19, 20... Trolley, 2
DESCRIPTION OF SYMBOLS 1... Trolley running guide rail, 30... Driven pawl, 31, 32... Vertical shaft, 33... Operation piece for stopping the following leading trolley, 34a to 35b... Stopper, 36... Drive trolley, 37... Pusher , 39... Drive chain.

Claims (1)

[Scope of utility model registration request] A vertical shaft that passes through a slit formed in the floor and projects above the floor is provided from a trolley propulsion means that moves on a fixed path under the floor, and a vertical shaft is provided above the floor that extends above the vertical shaft. In this case, a self-supporting transport trolley equipped with a cantilevered inverted L-shaped cover plate that covers the slit and wheels that roll on the floor is provided with a cantilevered inverted L-shaped cover plate that covers the slit. A conveying device using a trolley, comprising a connecting member that cantilevers in from the side, and the vertical shaft is fitted into a hole provided at the free end of the connecting member.