JPS601011Y2 - Transfer trolley propulsion device - Google Patents

Description

[Detailed Description of the Invention] The present invention supports a drive shaft along the movement path of a transfer cart, and the cart has a roller that is in contact with the drive shaft, and the roller has its axis aligned with the axis of the drive shaft. The present invention relates to an improvement of a transfer trolley propulsion device that is pivotably supported and can be switched between a driven posture in which the vehicle is tilted and an idle rotation posture.

In this type of device, in order to cope with demands such as increasing the carrying load and speeding up the cart, it is conceivable to provide a plurality of the rollers on one transfer cart to increase the propulsive force. As described above, provides a transport trolley propulsion device in which a plurality of rollers are provided in contact with one drive shaft, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

In FIG. 1, reference numeral 1 denotes a transfer cart, which includes a horizontal axis wheel 4 that rolls on a pair of left and right guide rails 2 and 3, and a vertical axis wheel 5 for steady rest that sandwiches one guide rail 2 from both sides. We are prepared.

Reference numeral 6 denotes a drive shaft supported between the guide rails 2 and 3, and is driven in the direction of arrow 7 by a drive means not shown.

Reference numeral 8 denotes a driven roller pivotally supported by the transfer trolley 1, and in a driven posture in which the axis center is oblique to the drive shaft 6, by coming into contact with the drive shaft 6, the transfer trolley 1 moves in the direction indicated by the arrow 9. be propelled in a direction.

As shown in FIGS. 2 to 5, according to the present invention, a plurality of rollers 8, two in the illustrated example, are used in the axial direction of the drive shaft 6, and each roller 8 has one horizontal oscillation. They are each pivotally supported by a movable frame 10 via a vertically swinging frame 11.

The horizontal swinging frame 10 is horizontally swingably supported on a vertical swinging center shaft 13 that is fixedly suspended from the transfer vehicle floor frame 12, and the two vertical swinging frames 11 are mounted on the front and back of the swinging center shaft 13. In both positions, the horizontal swing frame 10
It is supported on the block 14 by a horizontal support shaft 15 so as to be able to freely swing up and down, with a fixed bearing block 14 sandwiched between the two sides.

Each driven roller 8 is supported by a support shaft 16 parallel to the horizontal support shaft 15 within the vertically swinging frame 11 so as to be located on the opposite side of the bearing block 14 from the side where the horizontal support shaft 15 is located. A compression coil spring 17 is interposed between the front end portion 11a of the vertically swinging frame 11 and the horizontally swinging frame 10 to press the driven roller 8 against the drive shaft 6.

18 is a stopper that limits the amount of downward swinging of the vertically swinging frame 11, and is attached to the horizontal swinging frame 10 at a position above the rear end portion 11b of the vertically swinging frame 11 so that its vertical position can be adjusted. There is.

Reference numeral 19 denotes a stopper for the horizontal swinging frame 10, which is supported by the transfer cart floor frame 12 so that its position can be adjusted. A tension coil spring 20 is interposed between the roller and the transfer vehicle floor frame 12, and as a result, both driven rollers 8 have their axes inclined to the axis of the drive shaft 6, as shown in FIG. It is held in a driven position.

21 is a cam driven roller supported on the horizontal swing frame 10 with a vertical shaft.

According to the above configuration, when both driven rollers 8 are held in the driven position as shown in FIG. 2, a thrust is applied to the transfer cart 1 by the rotation of the drive shaft 6, and the transfer cart 1 is moved. become.

As shown in FIG. 5, a cam 22 is disposed at each stop position set on the moving path of the transfer trolley 1, and is movable between a position where it acts on the cam driven roller 21 and a retracted position. Therefore, when the transfer cart 1 is stopped, the cam 22 is projected to the operating position.As the transfer cart 1 moves forward, the cam driven roller 21 rides up on the cam 22, and the horizontal swing frame 10 is moved. Idle rotation in which both driven rollers 8 rotate around the swing center axis 13 against the tension coil spring 20, and their axes become parallel to the axis of the drive shaft 6 and are separated from the drive shaft 6. The posture is changed and the transfer trolley 1 stops.

In order to improve the accuracy of the stop position of the transfer carriage 1, a stop position regulating means can also be used.

Note that the axis of the driven roller 8 that has been switched to the idle rotation position is
As long as it is parallel to the drive shaft 6 as described above, the driven roller +8 may be configured to abut the drive shaft 6 even in this idle rotation position.

When the cam 22 is moved to the retracted position, the horizontal swing frame 10 returns to rotation until it comes into contact with the stopper 19 by the tension recoil spring 20, and the driven rollers 8 automatically return to the driven position shown in FIG. The transfer trolley 1 starts moving forward.

When the drive shaft 6 is reversed, the transfer cart 1 either runs in the opposite direction, or at this time, the second cam driven roller that acts on the cam for switching the driven roller 8 to the idle rotation position is moved to the center axis of the swing. 13 on the side opposite to the side on the cam driven roller 21.

Note that the position of the swing center shaft 13 is not limited to the intermediate position between the two driven rollers 8.

For example, as shown in FIG. 6, one driven roller 8 assumes an idling posture directly above the drive shaft 6 (its axis is parallel to the drive shaft 6), and the other driven roller 8 is spaced apart from the drive shaft 6. The swing center shaft 13 may be arranged at a position where it takes an idle posture.

The tree design can be implemented and used as described above,
Since it is equipped with multiple driven rollers that press against the drive shaft, it is possible to increase the carrying load and speed up the transport cart.

Since each driven roller is pivotally supported on one swinging frame for attitude change, there is no need for interlocking control means such as a link mechanism or a release wire, and the structure is extremely simple and can be implemented at low cost.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view showing the basic configuration, Figure 2 is the present invention.
3 is a side view of the same, FIG. 4 is a vertical sectional view of the same, FIG. 5 is a plan view of the main part showing the state when the bogie is stopped, and FIG. 6 is a modified version. FIG. 3 is a plan view of main parts showing an example. 1... Transfer trolley, 6... Drive shaft, 8...
....Device opening: 10...Horizontal swing frame, 11...Vertical swing frame, 12...
...Transfer truck floor frame, 13...Horizontal swing center axis, 15, 16...Horizontal support shaft, 17...
...Compression coil spring, 18, 19...Stopper, 20...Tension coil spring, 21...
...Cam driven roller, 22...Cam.

Claims (1)

[Scope of utility model registration request] A drive shaft 6 is supported along the movement path of the transfer cart 1, and the cart 1 is provided with a roller 8 that is in contact with the drive shaft 6 and whose axis is oblique to the axis of the drive shaft 6. In a device that is pivoted so that it can be switched between a posture and an idling posture,
A plurality of rollers 8 are disposed in the axial direction of the drive shaft 6, and these rollers 8 are pivotally supported by one swing frame 10, and the one roller 8 is arranged at the stop location of the transfer cart.
A transfer trolley propulsion device in which a cam 22 that swings two swinging frames 10 and switches each roller 8 to an idle rotation position is installed so as to be switchable between an active position and a non-active position.