JPH0221997B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an opening/closing device for an intermediate deck, etc., which prevents problems such as galling from occurring in pivot joints of actuators such as bearings and hydraulic cylinders.

Hydraulic folding type opening/closing devices installed on ships include the so-called external type, in which a hydraulic torque actuator such as a hydraulic cylinder is installed around the connection between the hull and the panel, that is, around the so-called main hinge. There is a so-called internal type in which a hydraulic torque actuator is installed around the joint between panels, that is, the so-called intermediate hinge.

Among the above-mentioned middle deck opening/closing devices, the swinging angle at which the internal opening/closing device must normally operate is approximately twice that of the external type (180 degrees), making it structurally more complex. As a result, external dimensions have to be larger compared to external switchgear of the same capacity, and while external switches are not limited by the external dimensions of the switchgear, internal switches generally have a larger panel size. It was unreasonable that the switchgear had to be housed and installed within the depth. For this reason, in the past, internal type switchgears had to be designed with excessive structure, and problems such as galling occurred frequently in hydraulic actuators such as bearings and hydraulic cylinders. In addition, in order to prevent these problems, multiple sets of switching devices are installed,
Although attempts have been made to avoid such troubles by lowering the output torque per location, the reality is that this inevitably increases costs and is not economically satisfactory.

The present invention has been made in view of the above-mentioned viewpoints, and is an internal type opening/closing device for an inner deck, etc., which does not cause galling at the pivot joints of actuators such as bearings and hydraulic cylinders, and requires less reinforcement of the main body. The purpose is to provide

The present invention provides a first structure between opposing structures that can stand upright in a bent state, with one end pivotally connected to the lower part of one structure and the other end pivotally connected to the upper part of the other structure. A link is provided, one end of which is pivotally connected to the lower part of the other structure, and the other end of which passes through each pivot point of the first link and is orthogonal to a line connecting the pivot points. within the range of the two lines that
Opening/closing of an intermediate deck, etc., characterized in that a second link is disposed pivotally connected to a portion of the one structure, and an actuator is connected to one of the links to apply a force in a rotational direction. It depends on the equipment.

Therefore, in the present invention, when the actuator is driven, the structure rotates via the link connected to the actuator, and the rotation of the structure causes the remaining structure to rotate via the remaining links, The middle deck is opened and closed.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, panels 1 and 2 constituting a structure such as an inner deck of a ship are arranged at required positions, and the end of panel 1 on the side opposite to panel 2 is
A wheel 6 is pivotally supported on a bracket 4 via a pin 3, and is pivotally attached to the end of the panel 2 on the side opposite to the panel 1, so that the wheel 6 can roll on the upper surface of a rail 5 fixed to the main body of a ship or the like. In the opposing parts of 1 and 2,
The opening/closing device 7 according to the present invention is installed so that the panels 1 and 2 can be bent to open the middle deck.

The details of the opening/closing device 7 will be explained with reference to FIGS. 4 to 6. A link 10 having a triangular side shape is attached via a pin 9 to the lower side of the support portion 8 fixed to the panel 1 in the vicinity of the panel 2. and panel 2
The link 10 is pivotally attached via a pin 12 to the upper side of the portion of the support portion 11 fixed to the panel 1, and a pin is attached to the lower side of the portion of the support portion 11 of the panel 2 adjacent to the panel 1. link 1 through 13
One end of the link 14 is pivotally connected, and the other end of the link 14 is connected to a line a passing through the pins 9 and 12 and connecting between the pins 9 and 12.
It is pivotally connected via a pin 15 to a portion of the panel 1 within the range of two lines b and c perpendicular to the .

Pins 16 are placed at required positions on the support portion 8 of the panel 1.
The rear end of the hydraulic cylinder 17 is pivotally connected via the rod 18, and the tip of the rod 18 of the hydraulic cylinder 17 is connected so that the link 10 receives the force of rotation from side to side in FIG.
It is pivotally connected to the link 10 via a pin 19.

When changing the panels 1, 2 from the extended state shown in FIGS. 2 and 6 to the bent state shown in FIG. 3, the hydraulic cylinder 17 is actuated to extend the rod 18.

Then, link 10 connects pin 12 to pin 19,1
However, the pin 12 of the link 10 is supported by the rail 5 via the wheel 6 and cannot be rotated downward. Since the link 10 is pivotally attached to the panel 12 that cannot be rotated, the link 10 does not rotate and the link 10
When the panel 2 rotates counterclockwise around the pin 12 due to the force d generated on the pin 13 and the force couple e in the opposite direction, the link 14 rotates counterclockwise around the pin 12. It moves in the longitudinal direction f by a force g, which is a component of the force e in the longitudinal direction f.

When the link 14 moves in the longitudinal direction f, the panel 1 receives a moment about the pin 3 due to the force g and rotates clockwise.

As a result, the panel 1 side edge of panel 2 was pulled up by panel 1, and panels 1 and 2 were bent into a U-shape at the opening/closing device 7, and finally stood up as shown in Figure 3. The middle deck opens.

Since the panel 2 is provided with wheels 6, the side of the panel 2 opposite to the panel 1 is guided by the wheels 6 on the rail 5.

When changing the panels 1 and 2 from the extended state to the bent state, the links 10 and 14 do not rotate relative to the horizontal line, so the middle deck can be opened without any force being lost due to the rotation of the links 10 and 14. Figure 7 shows the results of measuring the relationship between the cylinder force and the required cylinder force. Cylinder force can be reduced by as much as 45%.

Also, as the required cylinder force decreases, each pin 9, 12, 13, 15, 16, 19 and panel 1,
Since the load on pins 9 and 2 is significantly reduced,
It is possible to prevent galling from occurring in the panels 12, 13, 15, 16, 19, etc., and to reduce the reinforcement of the panels 1 and 2, thereby reducing their weight.

Further, since the links 10 and 14 do not protrude below the panels 1 and 2 when the panels 1 and 2 are in an extended state, cargo can be loaded almost to the bottom surfaces of the panels 1 and 2.

Two more links 10, 14 and 6 locations 9, 1
Since it has a minimum configuration of pivot points 2, 13, 15, 16, and 19, it can be manufactured in a short time and at low cost.

Furthermore, since there are few pivot points, overall machining errors are small and smooth operation is ensured.

The operation of changing the panel from the folded state to the extended state is the opposite of the above and will therefore be omitted.

In addition, in the embodiment of the present invention, two panels are used.
Although we have described the case where panels are installed in sets, it is also possible to install three or more sets of panels and provide a switch device between each panel. In this example, we will explain the case where two sets of switch devices are provided at the bends of the panels. However, it can be implemented no matter how many sets are provided, and it can be used to open and close not only the middle deck but also the upper deck and various other lids, and various other changes can be made without departing from the gist of the present invention. Of course, it is possible to add .

According to the opening/closing device for an inner deck or the like of the present invention, various excellent effects as described below can be achieved.

() When changing the structure from an extended state to a bent state, the links do not rotate relative to the horizontal line, so there is less force lost in the links, and the cylinder force is reduced by 45% compared to the conventional internal type. % can be reduced.

() Since the cylinder force is significantly reduced, the load applied to the pivot point and the panel is reduced, galling at the pivot point is prevented, and the weight of the panel can be reduced.

() Since the links do not protrude from the bottom of the structure when the structure is extended, cargo can be loaded almost to the bottom of the structure.

() Since it has a minimum configuration of two levers and five pivot points, it can be manufactured in a short time and at low cost.

() Since there are fewer pivot points, overall machining errors are reduced and smooth opening and closing operations of the structure are ensured.

[Brief explanation of drawings]

Figure 1 is an overall plan view of the middle deck with the opening/closing device of the present invention installed and an explanatory diagram when the panel is retracted, Figure 2 is a view taken in the - direction arrow of Figure 1, and Figure 3 is when the panel is opened. An explanatory diagram of the state, Figure 4 is the same as Figure 6.
This is an explanatory view of the opening/closing device for the inner deck, etc. of the present invention, and FIG. 5 is a view taken in the direction arrow direction of FIG.
An explanatory diagram of the opening/closing device for the middle deck, etc. of the present invention, FIG. 6 is a view taken from the - direction arrow in FIGS. 4 and 5, and FIG. 7 is a line showing the relationship between the opening degree of the middle deck and the necessary cylinder force. It is a diagram. In the figure, 1 and 2 are panels, 3 is a pin, 7 is a switchgear, 9 is a pin, 10 is a link, 12 is a pin, 13
is a pin, 14 is a link, 15 and 16 are pins, 17
indicates a hydraulic cylinder, and 19 indicates a pin.

Claims (1)

[Claims] 1. A first link having one end pivotally connected to the lower part of one structure and the other end pivotally connected to the upper part of the other structure is installed between opposing structures that can stand upright in a bent state. one end is pivotally connected to the lower part of the other structure, and the other end is pivoted to the lower part of the first structure.
A second link is provided that is pivotally connected to a portion of the one structure that is within the range of two lines that pass through each pivot point of the link and are orthogonal to a line connecting the pivot points. An opening/closing device for an intermediate deck or the like, characterized in that an actuator is connected to one of the links to apply a force in a rotational direction.