JP4578422B2 - Liftable deck balancing device - Google Patents

Description

  The present invention relates to a balancing device for achieving a horizontal balance of a liftable deck.

  Car carriers are generally equipped with multiple decks (deck), and each deck is designed for passenger cars, but movable riffs are used to load tall trucks and buses. There is also a table deck.

  A lift car (see FIG. 1) is used to move the liftable deck up and down. The lift car has a hydraulic jack mounted on the vehicle, and lifts and lowers the liftable deck using the hydraulic jack.

  The lift car is generally arranged at the center of gravity of the liftable deck. However, if the fixed deck on which the lift car is placed is provided with an opening of the ramp / way in the cage, the lift car may not be located at the center of gravity of the liftable deck. In such a case, as shown in FIG. 6, the wires W1 to W4 connected to the four corners of the liftable deck 1 are connected to the rod of the hydraulic cylinder S through the pulley P attached in the upper fixed deck 5. In addition, a balancing device for adjusting the horizontal balance of the liftable deck 1 by adjusting the feeding length of the wires W1 to W4 by moving the rod forward and backward is provided.

  However, in a conventional balancing device using a hydraulic cylinder, there is a risk that oil leaked from a pipe joint or the like that feeds hydraulic oil to the hydraulic cylinder will drop onto the loaded vehicle, and the quality of the loaded vehicle may be significantly impaired. Also, this type of hydraulic cylinder is expensive, and it is difficult to install a large hydraulic cylinder in a narrow gap.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a liftable deck balancing device that can be lifted and lowered safely at low cost.

In order to achieve the above object, the present invention is a balancing device for horizontally balancing a liftable deck that is moved up and down by a lift car, and pulleys attached to one end and the other end of the liftable deck, the one end of the riff Portable deck above the hull fixed structure at the other other end portion side of the riff Portable deck with at one end is connected to the hull fixed structure of the riff Portable deck below the riff Portable deck A balancing wire that is connected and stretched by being stretched over an upper portion of the pulley at the one end and a lower portion of the pulley at the other end to balance the liftable deck horizontally. And

  It is preferable that a turnbuckle is interposed in the balancing wire.

  Moreover, it is preferable to further include a tensioner that applies tension to the balancing wire.

  The present invention provides a suspension wire in which a balancing wire having ends fixed to the upper and lower sides of the liftable deck is stretched over a pulley provided at both ends of the liftable deck supported by a lift car. The liftable deck can be balanced horizontally without using a hydraulic cylinder that moves up and down.

  An embodiment of a balancing device according to the present invention will be described below with reference to FIGS. Throughout the drawings and all the embodiments, the same components are denoted by the same reference numerals.

  FIG. 1 is a conceptual diagram showing a first embodiment of a balancing device according to the present invention, and FIG. 2 is a longitudinal sectional view.

  The liftable deck 1 is supported by a lift car 2 and moved up and down. Further, as shown in FIG. 2, the liftable deck 1 can be placed on the bracket portion 4 provided on the frame 3 or other hull structure at the lowest position of the liftable deck 1. Fixed decks 5 and 6, which are hull fixing structures, are arranged above and below the liftable deck 1.

  An opening 6a is formed in the fixed deck 6 below the liftable deck 1. From the opening 6a, a ramp way R serving as a vehicle passage to the lower fixed deck is further provided on the lower fixed deck (not shown). It is extended toward.

  Since the opening 6a is formed in the lower fixed deck 6, the center of gravity of the support plate 2a of the lift car 2 can be aligned with the center of gravity G of the liftable deck 1. The lift car 2 It is supported at a position eccentric from the center of gravity position G. Since the support position of the lift car 2 is biased toward one end side (the right side in FIG. 2) of the liftable deck 1, the other end side (the left side in FIG. 2) of the liftable deck 1 tends to tilt downward.

  In order to prevent the other end of the liftable deck 1 from tilting downward and to balance the both ends of the liftable deck 1, the balancing wires 7 and 8 are connected to the liftable deck 1 via pulleys 13 and 14, respectively. The end is hung.

  The balancing wires 7 and 8 are respectively connected to eye plates 9 and 10 which are connecting brackets fixed at one end to the fixed deck 6 below, and then a pulley 11 attached to one end of the liftable deck 1. , 12, and further on pulleys 13, 14 attached to the other end of the liftable deck 1, and from the pulley 11 to the pulley 13 and from the pulley 12 to 14. After that, the other ends of the eye plates 15 and 16 fixed to the upper fixed deck 5 are connected and stretched.

  In the illustrated example, pulleys 11, 12, 13, and 14 are attached to the four corners of the liftable deck 1. However, the arrangement is not limited to this, for example, both end portions on a line passing through the center of gravity of the liftable deck 1. The pulleys can be attached one by one to balance the liftable deck 1 with one balancing wire, or the balance of the liftable deck 1 can be balanced by paralleling three or more balancing wires. Alternatively, the pulleys can be arranged so that the two balancing wires intersect diagonally within the liftable deck 1. The pulley may be a nip roller.

  In addition, both ends of the balancing wires 7 and 8 are connected to the fixed decks 5 and 6 in the illustrated example. However, the fixing wires 5 and 6 are not limited to the fixed decks 5 and 6 as long as they can be fixed so that they cannot move. You may connect and fix to a structure.

  The balancing wires 7 and 8 are stretched so that there is no slack at the position where the liftable deck 1 is kept horizontal. It can be seen that such a tensioned state of the balancing wires 7 and 8 is maintained even when the liftable deck 1 is moved up and down. For example, if the liftable deck 1 is raised, the lengths of the balancing wires 7 and 8 become shorter between the pulleys 13 and 14 and the eye plates 15 and 16, but the pulleys 11 and 12 and the eye plate 9 It becomes long between 10.

  In the balancing device having the above configuration, since the lengths of the balancing wires 7 and 8 are constant, the other end of the liftable deck 1 is always supported with the same tensile force while the liftable deck 1 is lifted up and down. It is possible to always prevent the other end portion from tilting downward and to balance the both end portions of the liftable deck.

  In order to apply tension to the balancing wires 7 and 8, it is preferable to further include a tensioner 17 as shown in FIG. The tensioner 17 can be configured, for example, by interposing a compression coil spring between the balancing wires 7 and 8. As the tensioner, a known device can be applied as a device for applying tension to the transmission belt or the chain.

  If the tensioner 17 is interposed between the balancing wires 7 and 8, when the balancing wires 7 and 8 are stretched, the stretch can be absorbed.

  Further, as shown in FIG. 4, it is preferable that a turnbuckle 18 such as a rigging screw or a lancing turnbuckle is interposed between the balancing wires 7 and 8. If the turnbuckle 18 is interposed in the balancing wire 7.8, the initial adjustment of the balancing wire length and the length adjustment when the balancing wire 7.8 is extended are easy. In FIG. 4, reference numeral 19 denotes a wire clip.

  FIG. 5 is a conceptual diagram schematically showing a second embodiment of the balancing device according to the present invention. In the balancing device of the second embodiment, four sets (a total of eight) of pulleys 11a to 14a and 11b to 14b are arranged in the liftable deck 1, and the four balancing wires 7a, 7b, 8a, and 8b are arranged vertically. The fixed decks 5 and 6 are connected and stretched. The lower fixed deck 6 has no opening, and the center of gravity of the lift car support (not shown) and the center of gravity of the liftable deck 1 are approximately aligned to support the liftable deck 1. .

  The two balancing wires 7a and 8a suspend one end of the liftable deck 1, and the other two balancing wires 7b and 8b suspend the other end of the liftable deck 1. It is installed.

  Thus, since the balancing device of the second embodiment suspends both ends of the liftable deck 1, it is possible to prevent the liftable deck 1 from being out of balance even when the ship rolls.

It is a conceptual diagram which shows 1st Embodiment of the balancing apparatus which concerns on this invention. It is a longitudinal section showing a 1st embodiment of a balancing device concerning the present invention. It is a side view which expands and shows a part of balancing device concerning the present invention. It is a side view which expands and shows other one part of the balancing apparatus which concerns on this invention. It is a conceptual diagram which shows 2nd Embodiment of the balancing apparatus which concerns on this invention. It is a conceptual diagram which shows the conventional balancing apparatus.

Explanation of symbols

1 Liftable deck 2 Lift car 5 Fixed deck 6 Fixed deck 7 and 8 Balancing wires 11, 12, 13, 14 Pulley 17 Tensioner 18 Turn buckle

Claims (3)

A balancing device for horizontally balancing a liftable deck that is moved up and down by a lift car,
Pulleys respectively attached to one end and the other end of the liftable deck;
The one end of the riff Portable deck above the hull fixed structure at the other other end portion side of the riff Portable deck with at one end is connected to the hull fixed structure of the riff Portable deck below the riff Portable deck A balancing wire that is connected and stretched by being stretched over an upper part of the pulley at the one end and a lower part of the pulley at the other end, and takes the horizontal balance of the liftable deck;
The balancing device characterized by comprising:   The balancing device according to claim 1, wherein a turnbuckle is interposed in the balancing wire.   The balancing device according to claim 1, further comprising a tensioner that applies tension to the balancing wire.

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