JPH0441034Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a liftable car deck for a car carrier, in which the height position of the deck supported on the hull can be changed by raising and lowering it with a lift car. .

(Prior art) Conventionally, some of the car decks installed in multiple layers at approximately 2 m intervals in the hold of a car carrier ship were designed to load large vehicles such as trucks and buses in addition to passenger cars. A total of about 70 to 150 car deck panels (liftable car decks)
Each car deck panel can be raised and lowered using lifting means.

Traditionally, lifting devices using winches (although hydraulic cylinders may also be used), wires, and sheaves have been used as lifting means, but these devices are expensive as a whole and have poor work efficiency and operability. A special lift car is used.

That is, as shown in FIG. 10, the car deck panel 102 is raised by a lift car from the use position shown by the imaginary line to the storage position directly below the fixed car deck 101, and is locked with the hook 160. After raising the panel 102 slightly from the storage position, use the winch 161 and rope 162 to move the sheave 1
64, the hook 160 is removed and lowered to the use position.

By the way, the applicant of this application filed the earlier application
No. 36493), a plurality of support arms are provided on each side edge of two corresponding sides of a liftable car deck that is raised and lowered by a lift car, and each support arm is driven by a drive means provided on at least one of the liftable car deck and the lift car. We have proposed a liftable car deck for a car carrier in which the support part can be switched freely between a support position in which it protrudes to the outside of the side edge and a retracted position in which it does not protrude to the outside of the side edge.

The above driving means includes (1) a hydraulic cylinder connected to each support arm on the car deck side and a hydraulic pressure supply system that supplies hydraulic pressure from the lift car side; (2)
(3) A hydraulic cylinder that is swingably attached to the lifting table of the lift car with a gradient magnetic fluid. A device in which the support arm is driven via a link mechanism on the car deck side is used.

(Problems to be solved by the invention) In the above conventional device, there are a large number of parts such as a winch (or hydraulic cylinder) 161, rope 162, sheave 164, hook 160, etc. attached to the hull for each car deck panel. Not only are the design and manufacturing costs high, but also a large amount of design and manufacturing man-hours are required to mount them vertically on the hull, and multiple workers must work together when operating them. There is a problem.

In the liftable car deck according to the above-mentioned earlier application, there remains room for improvement in the drive means for switching and driving the plurality of support arms between the support position and the retracted position.

That is, in the case of the drive means of (1) above, it is necessary to install four sets of hydraulic cylinders on the liftable car deck and to connect the hydraulic pressure supply system, so the drive means as a whole becomes very expensive. The automatic connection mechanism of the supply system becomes complicated and expensive. Said
In the case of the drive means (2), the handle must be manually operated each time the position of the support arm is changed, which is disadvantageous in terms of labor saving. In the case of the driving means (3) above, since each support arm is driven by a hydraulic cylinder through a complicated link mechanism, the link mechanism not only has a large number of parts and is heavy and expensive, but also Since the frictional resistance of each rotating part is large, the hydraulic cylinder becomes large and the spring that biases the support arm also becomes large.

(Means for Solving the Problems) The liftable car deck for a car carrier according to the present invention is a car carrier in which the height position of support on the ship body can be changed by placing it on the lifting table of a lift car and moving it up and down. In the liftable car deck, a plurality of support arms are attached to the periphery of the liftable car deck so as to be freely switchable between a support position where the support portions protrude outside the periphery and a retracted position where the support portions do not protrude outside the periphery; Each support arm is urged toward the support position by the urging means, and is driven upward in the vertical direction by the output actuation section of the drive means provided on the lifting table of the lift car, on the inner lower surface side of the approximately central portion of the liftable car deck. A driving force converting mechanism is provided which includes a rack member that is connected to the rack member, and a drum having a pinion meshed with the rack member, and each of the support arms is interlocked and connected to a wire winding portion of the drum of the driving force converting mechanism via a wire. A wire-type connection mechanism is provided.

(Function) In the liftable car deck for a car carrier according to the present invention, when the liftable car deck is raised and switched to the storage position, the output actuating portion of the drive means is activated when the liftable car deck is supported on the lifting table of the lift car. When the rack member of the driving force conversion mechanism is driven upward in the vertical direction, a drum having a pinion that meshes with the rack member is driven to rotate, and the wire of the wire type coupling mechanism is wound up, so that each support arm is driven to the retracted position. Ru. Either raise the liftable car deck on the lifting table and move each support arm to the retracted position as described above, or move each support arm to the retracted position and then lift the liftable car deck on the lift table. raise.

After the liftable car deck has been raised to a position slightly above the upper storage position, when the drive by the drive means is released, each support arm is switched to the support position by the urging force of the urging means, and the support portion thereof protrudes outside the peripheral edge. Therefore, when the elevating table is lowered, the liftable car deck is supported by the support arm toward the hull and becomes the storage position. Incidentally, when switching the liftable car deck from the storage position to the lower use position, the same operation as described above can be performed.

(Effect of the invention) According to the liftable car deck for a car carrier according to the present invention, as explained above, a drive means of a simple structure is provided on the lift table of the lift car, and the output operation part of this drive means generates a driving force. By driving the rack member of the conversion mechanism upward in the vertical direction, the drum is rotationally driven, and each support arm is switched to the retracted position against the urging force of the urging means via the wire type connecting mechanism. The structure of the drive means provided on the lifting table of the lift car can be simplified by arranging it vertically, and the drive force conversion mechanism can also be realized with a simple structure consisting of a rack member and a drum equipped with a pinion that meshes with the rack member. In addition, the wire-type connecting mechanism can be constructed to be simple, lightweight, inexpensive, and have low frictional resistance, mainly using wires and sheaves.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. In the hold of a car carrier, car decks 1 and 2 are arranged in multiple layers at approximately 2m height intervals, as shown in Figure 1.
The fixed car deck 1 and the car deck 2, which is the opposite of the fixed car deck 1, are panel-shaped liftable cars with a side of about 12 to 13 meters, so that large vehicles such as trucks and buses can be loaded as needed. The liftable car decks 2 are comprised of decks 2 (approximately 70 to 150 decks are provided per deck), and these liftable car decks 2 are supported by pedestals 3a and 3b on the hull side.

When loading a large vehicle, the liftable car deck 2 is raised by a lift car V as shown by the imaginary line and moved to the storage position directly below the fixed car deck 1 above it, and when loading a passenger car etc., it is used as shown by the solid line. It is designed to support the position.

As shown in FIGS. 1 and 2, the self-propelled lift car V has an X-shaped link mechanism 6 on its chassis 4.
The lower ends of the pair of left and right first frames 6a of the X-shaped link mechanism 6 are connected to the front end of the chassis 4, and the lower ends of the pair of left and right second frames 6b are connected to the front end of the chassis 4. The upper end portions are rotatably connected to the front end portions of the lifting table 5, while the idle wheels at the upper end of the first frame 6a are rotatable while supporting the guide member of the lifting table 5. An idler wheel at the lower end of the second frame 6b can freely roll on the chassis 4. The lifting table 5 is raised and lowered by opening and closing an X-shaped link mechanism 6 using a lifting hydraulic cylinder 7.

Furthermore, as shown in FIGS. 1 to 3, a hydraulic cylinder 8 is installed vertically in the center of the lifting table 5, and an output operating plate 8a is installed horizontally at the upper end of the pinion rod. , the output operating plate 8a can be driven vertically upward by a predetermined stroke by the hydraulic cylinder 8. The hydraulic cylinders 7 and 8 are connected to a pressure supply source of the lift car V, respectively, and are switched by operation handles 7a and 8c on the sides of the vehicle platform 4.

The car deck main body of the above-mentioned liftable car deck 2 is a steel structure formed by welding together a frame member 2a extending around the outer periphery, a girder member 2b, a stiffener 2c, a deck plate 2d arranged on the upper surface of these, etc. The lower surface side is open over almost the entire surface. However, the structure of the car deck body is not limited to that shown in the drawings, and various existing structures may be adopted.

In order to support the liftable car deck 2 on the pedestal 3a in the use position and the pedestal 3b in the storage position, and to move it up and down without interfering with the pedestal 3b in the storage position, as shown in FIGS. As shown in FIG. 6, support arms 9 each having an I-shaped cross section are installed horizontally in the vicinity of the front and rear ends of the corresponding left and right side edges of the liftable car deck 2 so as to be perpendicular to the side edges. It is configured to be slidably mounted in the sliding holes 10a, 10b of and to be able to freely move back and forth between a support position in which the support portion 9a protrudes a predetermined length outside the side edge and a retracted position in which the support portion 9a does not protrude outside the side edge. Sliding holes 10a, 10b
are formed at the corner reinforcement portions of the liftable car deck 2. In addition, the reference numeral 14a in the figure indicates the pedestals 3a, 3.
The guide portion 14b that guides the ship is a guide portion that comes into sliding contact with the side surface of the pillar material on the hull side.

A rod 11 coaxially extends from the inner end of each support arm 9, and the rod 11 is connected between the inner end surface of the support arm 9 and the spring receiving plate 12 on the car deck body side.
A compression coil spring 13 is mounted on the outside, and the compression coil spring 13 elastically biases the support arm 9 toward the support position.

In order to be able to switch the four support arms 9 to the retracted position at the same time when the liftable car deck 2 is moved from the use position to the storage position or vice versa, the liftable car deck 2 has the above-mentioned A rack and pinion drive force conversion mechanism 15C, which is a drive force conversion mechanism that converts the upward driving force of the hydraulic cylinder 8 into the horizontal direction, is provided as follows.

Above rack and pinion type driving force conversion mechanism 15C
As shown in FIGS. 3 and 7 to 9, the central deck plate 2d of the liftable car deck 2
This driving force converting mechanism 15C is provided below and has the following structure.

A pair of brackets 40a, 40 facing left and right
A drum 41 for winding the wire 20 is disposed horizontally in the left-right direction between the brackets 40a and 40b. Both ends are rotatably supported by brackets 40a and 40b, and a pinion 42 is fixed to the right end of the support shaft 41a on the outside of the right bracket 40b, and a rack member that meshes with the rear side of the pinion 42 4
3 is provided vertically, and this rack member 43 is guided so as to be vertically slidable by a square groove-shaped guide portion of a guide member 44 provided on the bracket 40b.
A guide lock 45 is provided to guide the tooth side of the rack of the rack member 43, and a holding plate 46 is provided on the right side of the pinion 42, guide block 45, and guide member 44, and the holding plate 46 is attached to the bracket 40b and the rack member. 43 with a plurality of bolts, and the guide block 45 is also fixed to the bracket 40b and the holding plate 46.

A somewhat wide square stopper plate 47 is vertically fixed to the lower end of the rack member 43, and when the rack member 43 is at the lower limit position, the lower end of the stopper plate 47 reaches near the lower end surface of the liftable car deck 2. When the rack member 43 is at the upper limit position, the upper end of the stopper plate 47 comes into contact with the lower end of the guide member 44.

The drum 41 is provided with two or more wire winding sections separated by a collar plate 48.

The base end sides of a pair of left and right wires 20 are wound around the wire winding portion of the drum 41, and the ends thereof are fixed to the drum 41.
0 extends rearward from the top of the drum 41, and as shown in FIG. 3, this wire 20 is connected to a triangular plate 21, which connects the wire 20a and the sheave
2 to the end of the rod 11 of the rear left support arm 9, and to the end of the rod 11 of the rear right support arm 9 through a wire 20b and a sheave 22, respectively.

Also, the wire 20 on the right side of the drum 41 extends forward from the bottom of the drum 41, as shown in the third figure.
This wire 20 is connected to a triangular plate 21, and this triangular plate 21 is connected to the end of the rod 11 of the front support arm 9 via a wire 20a and a sheave 22, and to the front right support via a wire 20b and a sheave 22. They are respectively connected to the ends of the rods 11 of the arms 9.

When the stopper plate 47 is not driven upward by the output operating plate 8a of the lift table 5 of the lift car V, the support arm 9 is advanced to the support position by the spring 13,
The wire 20 is paid out to the maximum extent and the rack member 43 is located at the lower limit position.

When the output operating plate 8a is raised by the hydraulic cylinder 8 of the lifting table 5 of the lift car V and the stopper plate 47 is driven upward, the rack member 43 rises to the upper limit position and the pinion 42 rotates counterclockwise in FIG. Then, the pair of left and right wires 20 are wound up by a predetermined amount, so that the support arm 9 is switched to the retracted position. When the output operating plate 8a is lowered, the wire 20 is let out by the elastic force of the spring 13, and the rack member 43 is lowered to the lower limit position.

Therefore, when changing the position of the liftable car deck 2 from the use position to the storage position or vice versa, the liftable car deck 2 is supported by the lifting table 5 of the lift car V and slightly raised from the pedestals 3a and 3b. In this state, by extending the piston rod of the hydraulic cylinder 8, the output operating plate 8
When a is raised, the rack member 43 and pinion 4
2, the drum 41 rotates, and all the support arms 9 are switched to the retracted position via the wire-type connecting mechanism 15, which includes the wires 20, 20a, 20b, the triangular plate 21, the sheave 22, etc.

After lifting or lowering the liftable car deck 2, when the piston rod of the hydraulic cylinder 8 is contracted while slightly floating above the pedestals 3a and 3b, all the support arms 9 are moved to the support position by the elastic biasing force of the compression coil spring 13. The liftable car deck 2 can be supported on the pedestals 3a and 3b.

In addition, when the liftable car deck 2 is provided with, for example, six support arms 9, the wires 20 extended from each wire winding portion of the drum 41 are It may also be directly connected to each support arm 9 via a sheave, respectively.

[Brief explanation of the drawing]

Among the drawings, Figures 1 to 9 show an embodiment of the present invention. Figure 1 is a vertical cross-sectional view of the main part of a car carrier showing a state in which a lift car is used to raise and lower a liftable car deck, and Figure 2 is a vertical cross-sectional view of a main part of a car carrier showing a state in which a lift car is used to raise and lower a liftable car deck. Figure 3 is a plan view of the hull and liftable car deck, Figure 4 is an enlarged cross-sectional view taken from Figure 3, Figure 5 is a side view of
The figure is a cross-sectional plan view of the support arm attachment part of the liftable car deck, Figure 6 is a side view of the support arm attachment part of the liftable car deck, Figure 7 is an enlarged sectional view of the driving force conversion mechanism, and Figure 8 is the 9 is a sectional view taken along the line in FIG. 7, and FIG. 10 is a diagram corresponding to FIG. 1 according to the prior art. V... Lift car, 2... Liftable car deck, 5... Elevating table, 8... Hydraulic cylinder,
8a...Output operation plate, 9...Support arm, 9a...Support portion, 13...Compression coil spring, 15...Driving force conversion mechanism, 20, 20a, 20b...Wire, 2
1... Triangular plate, 22... Sheave, 41... Drum, 42... Pinion, 43... Rack member, 4
4... Guide member, 47... Stopper plate.

Claims (1)

[Scope of Claim for Utility Model Registration] In a liftable car deck for a car carrier, which is placed on a lifting table of a lift car and raised and lowered to change the height position of support on the ship's hull, , a plurality of support arms are mounted so as to be switchable between a support position in which the support portions protrude outside the periphery and a retracted position in which the support portions do not protrude outside the periphery, and each support arm is urged toward the support position by a biasing means. A rack member, which is driven vertically upward by an output operating portion of a drive means provided on the lift table of the lift car, and a pinion meshed with the rack member are provided on the inner lower surface side of the approximately central portion of the lift car deck. An automobile characterized in that it is provided with a driving force conversion mechanism having a drum having a drive force conversion mechanism, and a wire type connection mechanism that interlocks and connects each of the support arms to a wire winding part of the drum of the driving force conversion mechanism via a wire. Liftable car deck for a carrier ship.