JPH0326733Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a trolley that travels within a trolleybus duct while collecting current, and more particularly to a transfer trolley that can smoothly transfer and travel through the separated portion of the duct.

Conveyance devices such as hoists and conveyance trucks in production lines have switching and traversing of travel rails. In that case, even in the trolleybus duct installed to supply power to the transport equipment,
Electrical circuit switching and traversal mechanisms are provided, including duct disconnection in these areas.

Transfer trolleys have been proposed to facilitate smooth transfer of such separated sections of ducts.

FIG. 1 shows a conventionally proposed transfer trolley, in which a pair of sled plates 2, 2, which serve as sleds, are screwed 4 to axles 3, 3 on the left and right sides of a trolley bogie 1.
It was fixed. The lower edges of the sled plates 2, 2 are made higher than the lower ends of the wheels 5, 5 of the trolley car so that they do not come into contact with the duct while the trolley car normally travels inside the duct.

On the other hand, the raised portions 2a formed on the front and rear lower edges of the sled plates 2, 2 are made to protrude in front of the wheels 5, 5, so that when transferring from one separated duct to the other duct, the sled portions 2a are It is designed to enter the duct in the direction of travel ahead of the target. (If necessary, please refer to Fig. 3.) If the duct on the traveling direction side is eccentric upward in both separated ducts, first the sled plates 2, 2 are attached to the separated end of the duct. Trolley Cart 1
Since the trolley 1 is lifted upward, the trolley 1 can enter the duct without colliding with the cut-off end of the duct.

However, when the transfer trolley attempts to transfer over the separated part of the duct, if there is a step between the separated ends of the duct, the sled plate collides with the end of the duct, applying a strong impact. The damage was concentrated on the axle and the screwed parts, and there was even a risk of damage.

In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a transfer trolley of this type that has improved impact resistance so that it will not be damaged even if a strong impact is applied when passing through the cut-off part of the duct. It has a purpose.

That is, in the transfer trolley provided by the present invention, the sled is composed of a pair of sled plates and a reinforcing member having an L-shaped cross section. The sled plate is fixed to the axle on the left and right sides of the trolley car with screws, and the reinforcing member is in contact with the front and rear surfaces and the lower surface of the trolley car.

Examples of the present invention will be described below.

FIG. 2 shows an embodiment of the sled in the transfer trolley according to the present invention.

That is, the sled 6 is made up of a pair of sled plates 7, 7 and reinforcing members 8, 8 having an L-shaped cross section, and the pair of sled plates 7, 7 extend their front and rear sled portions 7a, 7a in the same direction. A pair of reinforcing members 8, 8 are integrally connected to the front and rear opposing portions of the pair of sled plates 7, 7 in a frame shape. Such an integral connection is achieved by reinforcing member 8
This can be obtained by, for example, welding the end face of the sled plate 8 to the side surface of the sled plate 8.

FIG. 3 shows a sled 6 constructed as described above.
The figure shows the situation in which the is assembled to the trolley 1.

That is, the sled 6 is set by fitting it into the trolley car 1 from below. The sled plates 7, 7 are attached to the left and right sides of the trolley car 1 and fixed to the axles 3, 3 of the trolley with screws 4, 4,
On the other hand, the reinforcing members 9, 9 are fixed with their own L-shaped surfaces in contact with the front and rear surfaces and the lower surface of the trolley bogie 1 based on the fixing of the sled plates 7, 7.

Incidentally, the sled plates 7, 7, as in the conventional case,
The lower end edge is higher than the lower end of the wheels 5, 5 so that it does not come into contact with the duct 9 while traveling inside the duct 9, and the front and rear curved portions 7
a, 7a protrude in front of the wheels 5, 5 to serve as guides when entering the duct 10 of the other party.

The transfer trolley of the present invention configured as described above is configured so that when attempting to transfer from the inside of one duct 9 to the other duct 10 at the separated portion of the duct as shown in FIG. When the curved portions 7a, 7a of the sled plates 7, 7 collide with the end of the other duct 10 and receive a strong impact while the sled plates 7, 7 are eccentrically upward, the impact force is applied to the sled plates 7, 7. Reinforcing members 8, 8 that are integrally connected
The sled plates 7, 7 contact the L-shaped surface of the trolley in two directions at right angles to the front and bottom surfaces of the trolley.
It is possible to reduce the impact on the screwed part of the trolley 1.

FIG. 4 shows an example of an improved sled plate. That is,
The sled plate 7' is bent at right angles at the lower end edge and the front and rear curved portions 7a', 7a' to improve the bending strength of the sled plate itself and to allow the sled plate to move over the separated portion of the duct. In some cases, the width of the contact sliding surface with respect to the duct is increased. This helps to prevent the end of the duct at the duct separation portion from being locally worn and forming wear grooves due to sliding of the sled plate.

As explained above, according to the transfer trolley of the present invention, the cross section L integrally connected to the sled plate
Since the letter-shaped reinforcing member is fixed in contact with the front and rear surfaces and the bottom surface of the trolley, even if the sled plate receives a strong impact force when moving over the separated part of the duct, the reinforcing member and the trolley will remain in contact with each other. Impacts can be applied at the abutting parts in two directions at right angles,
It is possible to prevent damage due to concentration of impact force on the screwed portion of the sled plate to the trolley truck, and to provide this type of transportation trolley that is less likely to break down and is sturdy.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a conventionally proposed transfer trolley, FIGS. 2 and 3 show an embodiment of the transfer trolley according to the present invention, and FIG. 2 shows a preferred example of a sled. FIG. 3 is an explanatory view showing the sled as described above assembled and fixed on a trolley car as a transfer trolley, and FIG. 4 is a perspective view showing a modification of the sled plate in the sled of the transfer trolley according to the present invention. be. In the symbols, 1 is a trolley, 2 is a sled plate, 2a is a raised part, 3 is an axle, 4 is a screw, 5 is a wheel, 6 is a sled, 7 and 7'
7a and 7a' are raised portions, 8 is a reinforcing member, and 9 and 10 are ducts.

Claims (1)

[Scope of utility model registration request] It has a trolley bogie 1 and a sled 6, and the sled 6 is made up of a pair of sled plates 7, 7 and reinforcing members 8, 8 having an L-shaped cross section. As a state, reinforcing members 8, 8 are integrally connected to the front and rear opposing parts in a frame shape, and the sled plates 7, 7 are fixed to the axles 3, 3 on the left and right sides of the trolley bogie 1 with screws 4, 4, Reinforcement members 8, 8
A trolley for transfer, characterized in that the trolley is in contact with the front and rear surfaces and the bottom surface of the trolley bogie 1.