JPS5820457Y2 - Conveyance device using a conveyance cart - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a conveying device using a conveying cart which is in a substantially e state with respect to the rails due to braking action when in a stopped state, and the present invention relates to a conveying device that uses a conveying cart that is in an almost e state with respect to the rail due to a braking action. Even if there is some error in the stop position of the transport vehicle at the unloading stop location,
The purpose of this system is to stop the loading platform on the truck with extremely high precision at a predetermined position so that loading and unloading of loads can be carried out safely.

An embodiment of the present invention will be described below based on the attached illustrative drawings. In Figs. The rubber roller 4 is in pressure contact with the bottom surface of the rail 2, and the spur gear 5 is provided with a driving rubber roller 4 driven by a motor with a brake and a driving spur gear 5 coaxial with the driving rubber roller 4. When the rack gear 6 installed on the bottom engages with the rack gear 6, and the power to the motor is cut off to stop the motor, the attached brake is applied and the rubber roller 4 and spur gear 5 are locked. It becomes fixed state against.

Incidentally, instead of the brake, a worm gear reducer may be interposed in the drive system so that the rubber roller 4 and spur gear 5 are locked when not driven.

Reference numeral 8 denotes a movable loading platform that is supported on the carrier 1 via support rollers 9 so as to be slidable in the same direction as the running direction of the carrier 1. Both ends of a penetrating slide guide rod 11 are fixed to the front and rear ends of the movable loading platform 80, and compression coil springs 12 and 13 are interposed on the rod 11 between the front and rear ends of the transport vehicle 1 and the opposite front and rear ends of the movable loading platform 80. equipped,
The movable loading platform 8 is held at a neutral position.

On the movable loading platform 8, slide plates 15 for containers (loads to be transported) 14 are attached at multiple locations in the running direction, and at both front and rear ends of the moving direction, the containers 14 fall from above the loading platform 8 in the running direction. Container positioning tools 16 with an inverted side profile are provided to prevent the container from rising above a certain level, and furthermore, the east container 14 falls from the top of the platform 8 in the width direction at both ends of the platform 8 in the width direction. Movable pieces 17 are provided at two locations in the running direction to prevent this.

These four movable pieces 17 have two rotating horizontal shafts 18, 1
It is fixed to both ends of the loading platform 9 and rotates between an active state in which it stands up above the loading platform 8 through a long hole 20 provided in the loading platform 8, and a non-operational state in which it sinks below the loading platform 8.

The front and rear rotation shafts 18.19 have an arm 22 pivoted to the bottom of the loading platform 8 at an intermediate position by a vertical shaft 21, and an arm 25 fixed to the push/pull rods 23, 24 and the horizontal rotation shaft 18.19.
．． Each movable piece 1T is held in an operating state in which it stands up on the loading platform 8 by a bow tension spring 27 which is interlocked and connected via the arm 26 and stretched between the arm 22 and the loading platform 8.

A cam follower 29 having a cam driven roller 28 vertically supported at the tip thereof is integrally connected to the arm 22 so as to protrude from the side of the transport vehicle 1 .

30 is a stopper of the cam follower 29, and 31 is a stopper that restricts the sliding range of the slide guide rod 11.

As shown in FIG. 4 to FIG. 1, a loading/unloading stop place 32 is set in the middle of the moving route of the transport vehicle 1, and the loading/unloading stop place 32 is set on one side of this stop place 32 and is perpendicular to the moving direction of the east transport vehicle 1. A reciprocating cart 33 that can reciprocate in the direction of the rail 3
4, and on the other side are provided an inclined roller conveyor 35 for receiving unloaded containers, and a pusher 37 for transferring the containers unloaded onto this conveyor 35 to another conveyor line 36.

A roller conveyor 38 having a conveying function in the same direction as the moving direction of the transport vehicle 1 is provided on the reciprocating carriage 33 and on an elevating platform 40 that is raised and lowered by an elevating means 39, and the roller conveyor 38 is at the lowering limit position. When in
A pusher 41 is provided on the reciprocating carriage 33 to push the container 14a on the roller conveyor 38 onto the loading platform 8 of the transport carriage 1 stopped at the stop 7vi32.

42 is a rail that guides the pusher 41 via a horizontal roller 43 and a vertical roller 44; 45 is a pusher arm divided to pass on both sides of the roller conveyor 38; 46 is a pusher at the upper end of each pusher arm; , 4a.

Reference numeral 47 denotes a drive check 7 for reciprocating the reciprocating cart 33.
48 and 49 are a horizontal roller and a vertical roller that are pivotally supported on the truck 33 and engage with the rail 34.

In FIGS. 4 and 5, reference numeral 50 denotes a container accuveyor arranged side by side on the moving route of the reciprocating cart 33, and each row is composed of two upper and lower roller conveyors.

Further, at the loading/unloading stop place 32 of the transport truck 1, there are provided a cam 51 for moving the cam follower 29 via its roller 28, and a pair of left and right guide rails 52 for positioning the loading platform as shown in FIG. and is provided.

As shown in FIGS. 2 and 3, this guide rail 52 consists of guide rollers 5 that are pivotally supported at two locations in the front and back on both sides of the loading platform 8.
3 to restrict the loading platform 8 to a certain level,
The direction of the loading platform 8 is regulated by guiding slide blocks 5'4 attached to both sides of the loading platform 8 so as to sandwich them from both sides.

The reason why such a means is necessary is that the rubber roller 4 is pressed against the bottom of the rail by spring force, so one end of the carrier 1 is lifted, making the vertical position unstable.
On the other hand, the carriage 1 has room to move in the left and right directions, so the position cannot be determined.

Furthermore, as shown in FIGS. 3, 6, 8, and 9, the movable loading platform 8 on the transport vehicle 1 stopped at the stopping place 32 is placed at a predetermined position immediately before and to the side of the stopping place 32. Means 55 is provided for pushing up to.

This loading platform support means 55 includes a reciprocating body 59 guided by a guide rail 56 via a horizontal roller 51 and a vertical roller 58, and a pusher pivotally supported on the reciprocating body 59 by a vertical shaft 59 and a vertical shaft 60. 61, a torsion coil spring 63 that biases the pusher 61 into an operating position that engages the stopper 62, a double-acting cylinder unit 64 that reciprocates the reciprocating body 59, and a cam driven roller 65 that is pivotally supported on the pusher 61. and a cam 66 that acts on the pusher and rotates the pusher 61 against the spring 63 to the outside of the conveyance path when the pusher is retracted.

67 and 68 are detectors for determining the movement range of the reciprocating body 59, and are operated by a bar 69 attached to the reciprocating body 59.

Next, to explain the working method and operation, container 1
4 is placed on the loading platform 8, and the carrier 1 holds the container 14 in a fixed position on the loading platform 8 by the front and rear positioning tools 16 and the movable pieces 11 in an upright position on both the left and right sides, and is guided to the rail 2. It runs on its own by rotating the rubber roller 40 times.

When the transport vehicle 1 reaches the loading/unloading stop A32, it automatically stops by cutting off the power to the drive motor using a conventionally well-known method. The loading platform 8 is set to stop at a position slightly closer to the user.

When the carriage 1 is automatically stopped at this set position and the rubber roller 4 is articulated so that the carriage 1 is locked to the rail 2, the platform backing means 55 is activated.

That is, the reciprocating body 5 is moved by the reciprocating cylinder unit 64.
When the pusher 9 is moved forward, the pusher 61, which had been moved out of the conveyance path by the action of the cam 66, is first rotated to the operating position by the spring 63 as shown in FIG. do.

Due to the pusher 61 moving from A to B, the movable loading platform 8 on the conveyor truck 1, which has already stopped, is moved by the springs 12, 13.
While compressing one of the carriers, the carrier 1 is pushed back against the carrier 1, and is stopped by the pusher 61 at position B at a fixed position around the center of t, that is, a predetermined loading/unloading position.

Furthermore, the height and orientation of the loading platform 8 are also regulated with high precision by the guide rails 52, guide rollers 53, and slide blocks 54.

Since the cam follower 29 rides on the cam 51 and is rotated prior to the above automatic stop of the transport vehicle 1,
The arm 22 rotates against the spring 2γ, and the push/pull rod 23
, 24, arms 25, 26, and horizontal rotating shafts 18, 19, the four movable pieces 17 are rotated from above the loading platform 8 to the recessed position.

Next, the reciprocating cart 33 shown in FIGS. 4 and 5 is moved and the lifting platform 40 is raised and lowered to move the roller conveyor 3.
8 is connected to one selected container accuvaire 50, and the leading container is transferred from the accuvaire 50 to a predetermined position on the roller conveyor 38.

Then, the roller conveyor 38 is lowered to the lower limit position, and the reciprocating carriage 33 is advanced to the end position of the moving path shown in FIGS. Advance 41.

This pusher 41 may be moved by a cylinder unit or other suitable means.

The pusher 41, which moves forward on the reciprocating cart 33, positions the loading container 14a on the roller conveyor 38 in the lateral direction with a pusher 46, and moves it onto the loading platform 8 on the transport cart 1, which is stopped at a predetermined position. Slide this loading platform 8
Load container 14 that was placed on top of container 1
4a onto the inclined roller conveyor 35 of the side wall.

The container 14 pushed onto the conveyor 35 slides to a predetermined position where it is completely removed from the loading platform 8 and stops.
It is transferred by a pusher 37 onto another conveyor line 36 .

The loading container 14a is moved to the loading platform 8 by the pusher 41.
The pusher 41 is then sent back to its original position on the reciprocating cart 33, after which it is fed with high accuracy to a predetermined position above.
The transport vehicle 1 is started again to transport the loading container 14a, but when the cam follower 29 separates from the cam 51, all the movable pieces 1T automatically return to rotation due to the action of the spring 27 and move onto the loading platform 8. Since the loading container 14a stands upright, it is held between the movable pieces 17 and there is no fear of it falling from the loading platform 8 in the width direction (loading/unloading direction).

When the transport vehicle 1 starts, the pusher 61 of the platform support means 55 may also be returned to its original standby position by the reciprocating cylinder unit 64.

The present invention can be carried out as described above, and the conveyance device of the present invention uses a conveyance cart that is substantially fixed to the rail when stopped, so that the loading platform can be held in a fixed position with a fixed stopper. Even if the loading/unloading stop location is set in the middle of the travel route where it is impossible to stop, it is possible to prevent variations in the stopping position of the transport vehicle itself by simply pushing the movable loading platform on the transport vehicle to one side with a pusher. It has become possible to stop the loading platform at a predetermined position extremely accurately regardless of the situation, and it has become possible to safely load and unload cargo to and from the loading platform using simple means.

In other words, since the carrier is in a fixed state, there is no fear that the reaction force (biasing force for positioning the carrier) when the carrier is pushed by the pusher will move the carrier in the same direction, and it is ensured that the carrier is in the opposite direction to the pusher. Because it acts in the same direction, the loading platform always remains in pressure contact with the pusher, so the loading platform does not go ahead of the pusher, as is the case when moving the loading platform by holding it from the front and back, or when pushing the loading platform by engaging the pusher with the loading platform. The platform can be moved accurately to a predetermined position determined by the limit position of the pusher, and even if the platform is not locked during loading and unloading, work can be done safely without the risk of unexpected movement of the platform. It is possible to do this.

[Brief explanation of the drawing]

Figure 1 is a partially longitudinal side view showing a transport vehicle with a movable platform;
FIG. 2 is a partial cross-sectional plan view of the same part, FIG. 3 is a partial longitudinal front view showing the carrier at the stopping place, FIG. 4 is a plan view showing the entire loading and unloading place, and FIG. FIG. 4 is a vertical sectional front view showing the load transfer means, FIG. 6 is a side view showing the loading platform support means, FIG. 7 is a side view of FIG. 4, FIG. 8 is a partially cutaway plan view of FIG. 6, FIG. 9 is an enlarged plan view of the eighth fixing section. 1...Self-propelled carrier, 2...Rail, 4...Driving rubber roller 8...
Movable loading platform, 11...Slide guide rod, 1
2, 13... Compression coil spring for biasing movable loading platform,
14, 14a... Container (cargo), 32...
Loading/unloading stop place, 55... Loading platform support means, 59... Reciprocating body, 61...
・Button shear 64...Button shear - double-acting cylinder for reciprocating movement.

Claims (1)

[Scope of utility model registration request] A movable loading platform that can slide in the same direction as the traveling direction is provided on the conveying truck, which is substantially fixed to the rail due to a braking action in a stopped state, and a biasing means is provided to bias and stabilize the movable loading platform in a predetermined position. A conveying device using a conveying truck, which is provided with a pusher that pushes the movable loading platform to a predetermined position with respect to the stopped conveying truck, at a loading/unloading stop location of the conveying truck.