JPH03295728A - Cargo handling device - Google Patents

Abstract

PURPOSE:To perform the handling work of a heavy cargo efficiently and safely by providing a fastening device to integrally fasten a lift frame and a slide deck between them, positioning the slide deck at the preset position on the lift frame, then surely fastening them. CONSTITUTION:A lift frame Fe is liftably provided on one side of a load carrying platform A via a lift mechanism E. A movable slide deck Ds is provided between the load carrying platform A and the lift frame Fe, and it has a driving device 3 for forceful slide driving. A fastening device L for integrally fastening the lift frame Fe and the slide deck Ds is provided between them. A collision piece 72 and a stopper 12 fitted to the slide deck Ds and the lift frame Fe respectively and colliding with each other to restrict their relative positions are provided in the fastening device L. A fastening hook 70 and a hooked section 13 fitted to the slide deck Ds and the lift frame Fe respectively and removably coupled with each other are provided.

Description

Detailed Description of the Invention A0 Object of the Invention (1) Industrial Application Field The present invention relates to a cargo handling device that loads and unloads cargo between a cargo platform and the ground, such as a tailgate lifter of a cargo handling vehicle. It is something.

C) Conventional technology A conventional cargo platform is equipped with a lifting frame that is provided on the loading platform so that it can be raised and lowered via a lifting mechanism, and a sliding deck that is movable between the loading platform and the lifting frame that is in the raised position. A cargo handling device is known that allows cargo placed on a slide deck to be loaded and unloaded between the ground and a loading platform by controlling the elevation and lowering of a frame and controlling the movement of a slide deck (see Japanese Patent Application Laid-Open No. 63-219434).

(3) Problems to be Solved by the Invention In such a cargo handling device, the slide deck is transferred from the loading platform onto the elevating frame, and the elevating frame is raised and lowered together with the slide deck to lift the cargo placed on the slide deck onto the ground. Since the loading and unloading is carried out between the loading and unloading platform, the sliding deck is positioned in a fixed position on the lifting frame and securely secured to prevent the sliding deck from shifting or tilting during cargo handling operations. However, conventional cargo handling equipment does not take such measures.

The present invention has been made in view of the above circumstances, and the slide deck transferred onto the elevating frame is positioned at a fixed position and securely fixed at that position, and heavy loads are placed on the slide deck. A cargo handling device that greatly improves cargo handling efficiency by preventing the lashings from loosening even when the slide deck is transferred to a loading platform, and by allowing the lashings to be quickly and easily released when transferring a slide deck to a loading platform. The purpose is to provide the following.

B0 Structure of the Invention (1) Means for Solving the Problems To achieve the above object, the present invention provides a loading platform, an elevating frame provided on the loading platform so as to be movable up and down via an elevating mechanism, and the loading platform and the elevating frame. In a cargo handling device equipped with a slide deck movable between the slide deck and a drive device for forcibly sliding the slide deck, a lashing device is provided between the lifting frame and the slide deck for lashing them together. The lashing device includes an abutting piece and a stopper that are provided on the slide deck and the lifting frame, respectively, and abut each other to regulate their relative positions, and a stopper that is provided on the slide deck and the lifting frame, respectively, and that abuts against each other to regulate their relative positions. It consists of a lashing hook and a locked part that can be releasably engaged.

(2) Effect According to the above configuration, the slide deck on which the load is placed is positioned at a predetermined position on the elevating frame and securely secured there, and the load can be loaded onto the slide deck and from there. Even if an excessive load or a biased load is applied to the slide deck during unloading work, the slide deck and the lifting frame are integrated and can be moved up and down, allowing the cargo handling work to be carried out efficiently and safely even with heavy loads.

(3) Examples An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front side view of a cargo handling vehicle (2) equipped with the cargo handling device of the present invention, and FIG. 2 is a plan view thereof. In these figures,
A loading platform A is formed at the rear of the vehicle body B of the cargo handling vehicle, which is generally indicated by the symbol ■, and on this loading platform A, a pair of guide rails 1.1 parallel to each other with an interval in the vehicle width direction are installed. A pair of parallel guide columns 2, 2 are installed vertically at the left and right corners of the rear end of the vehicle body B, and these guide columns 2.2 It guides the lifting and lowering of the lifting frame Fe, which will be described later.

Further, on the vehicle body B, a slide cylinder 3 serving as a drive device is disposed in the longitudinal direction at the center in the vehicle width direction.The slide cylinder 3 is supported by the vehicle body B, and has a flat surface at its tip A hook-shaped connecting member 4 is integrally provided, and this connecting member 4 can penetrate the stepped upright wall AI at the front end of the loading platform A and protrude onto the loading platform A when the slide cylinder 3 is extended. (Figure 8).

The pair of guide columns 2.2 are formed with substantially vertical guide paths 5, 5, and each guide roller 7 is provided with a pair of elevating members 6.6.
．． 8 so that it can be raised and lowered freely. At the bottom of the pair of elevating members 6, 6, both base ends of the elevating frame Fe move between the extended position (solid line position in Figure 1) and the retracted position (dotted line position in Figure 1) with support shafts 9.9. It is pivoted so that it can rotate up and down.

The elevating frame Fe is formed of a rectangular frame body having a rearwardly open recess 10 at the center of its rear edge,
A pair of guide rails 11.11 having a U-shaped cross section and longitudinally matching the guide rail 1.1 are integrally installed on both left and right sides thereof.

Furthermore, a pair of stoppers 1 are provided at the rear end of the elevating frame FeO.
2.12 are provided to protrude upward, and these stoppers 12.12 collide with abutment pieces 72.72 (Fig. 5.6) provided on the slide deck Ds, which will be described later, to prevent the slide deck Ds from sliding. It is possible to regulate the retreat position. Furthermore, a pair of locked parts 13.13 are integrally provided on the inner surface of the recessed part 10, and these locked parts 13.13 are connected to lashing hooks 70 of a slide deck Ds (see Fig. 5-6), which will be described later. can be engaged with. Retaining pieces 14.14 are integrally protruded from both base ends of the elevating frame Fe, and these retaining pieces 14.1
4 engages with a position-adjustable locking member 15.15 provided at the lower end of the elevating member 6, so that the elevating frame Fe is held in a substantially horizontal extended position.

The elevating frame Fe is controlled to rise and fall along the pair of guide columns 2.2 by an elevating mechanism E provided on the vehicle body B. Next, the structure of the elevating mechanism E will be explained with reference to FIG. 9. Then, the vehicle body B is provided with an elevating cylinder 16, and a pair of movable pulleys 17 are attached to the tip of the piston rod.
．． 17' is supported. The base ends of two wire ropes 1B and 1B' are tied to both sides of the lifting cylinder 16, and one of the wire ropes 18 is connected to one movable pulley 17.
, a fixed pulley 20.21 pivotally supported on the vehicle body B, and a fixed pulley 22 pivotally supported on the upper part of one guide column 2, and then connected to one lifting member 6, and the other wire row 118. ' is connected to the other lifting member 6 after passing through the other movable pulley 17', a fixed pulley 24 pivotally supported on the vehicle body B, and a fixed pulley 25 pivotally supported on the upper part of the other guide column 2. Therefore, by telescoping the single-acting lifting cylinder 16, the lifting frame Fe can be moved up and down along the pair of guide columns 2.2 via the two wire ropes 18, 18'. Note that if the elevating cylinder 16 is made free, the elevating frame Fe will descend under its own weight.

A slide deck Ds that can be transferred onto the elevating frame Fe is provided on the loading platform A of the vehicle body B so as to be movable back and forth.

As shown in FIG. 8, this slide deck Ds is constructed by integrally laying a cargo receiving plate 30 made of an iron plate or the like on a rectangular deck frame 29. The deck frame 29 is the third and fifth deck frame.
As shown in the figure, a plurality of cross members 28 are integrally connected to left and right vertical beams 27, 27 to form a highly rigid rectangular frame. A rear end portion of the cargo receiving plate 30 is formed into an inclined surface 31 that slopes downward toward the rear.

As shown in FIG. 8, a pair of right and left holding frames 32.32 are provided on the left and right sides of the cargo receiving plate 30 along the front-rear direction, and a pair of patterns, which are cargo objects, are mounted on these holding frames 32.32. Aircraft tires T, T (FIG. 1.2) are held tightly by cables 33, 33.

Guide frames 35 and 35 made of angle material are respectively fixed to the left and right sides of the deck frame 29 of the slide deck Ds, and these guide frames 35 and 35 have a plurality of lateral regulating rollers 36 and vertical regulating rollers. 37
... are rotatably supported, and these rollers 3
6... and 37... are the guide rails 1 on the loading platform A.
．． 1 to guide the back and forth movement of the slide deck Ds.

As clearly shown in Fig. 3.5, a receiving portion 38 in a planar U-shape that opens at the front edge is formed at the center of the front end of the deck frame 29 of the sliding deck Ds, and the receiving portion 38 has a U-shaped planar shape that opens at the front edge. A connecting member 4 having a forked hook shape with three tips can enter therein, and an abutting surface 3B that can abut with a tip end surface 4I of the connecting member 4 is formed on the inner surface of the receiving portion 38. .

The slide deck Ds includes the slide cylinder 3.
In cooperation with the connecting member 4 at the tip, the slide deck Ds
A connecting link mechanism 39 constituting a connecting device J for connecting the slide cylinder 3 and the stopper 12.
A lashing link mechanism 40, which cooperates with the locked portion 13 and constitutes a lashing device for lashing the slide deck Ds on the elevating frame Fe, is provided.

Next, the configurations of the connecting link mechanism 39 and the securing link mechanism 40 will be explained with reference to FIGS. 3 to 10.

First, to explain the structure of the connecting link mechanism 39, as shown in FIGS. 3 to 6 and 10, the rear part of the deck frame 29 of the slide deck Ds has an operation that extends laterally through a plurality of bearing bosses 41 and 41. A lever 42 is rotatably supported, and one end of the operating lever 42 is bent at a substantially right angle to form a handle 43. An arm body 44 is welded to the center of the operating lever 42, and one end of a length-adjustable connecting rod 45 is connected to the tip of the arm body 44. This connecting rod 45 extends forward on the slide deck Ds and is connected to a swing lever 46. The swinging lever 46 has an intermediate portion pivotally supported by a pivot 48 on a bracket 47 projecting from the cross member 28 at the front of the slide deck Ds, and one end of the swinging lever 46 has a The connecting rods 49 are connected. The front part of the connecting rod 49 extends downward into the receiving part 38, and the front end thereof has an arm body 51 integral with a connecting shaft 50 rotatably supported in the central part of the receiving part 38. connected. A connector 52 is fixed to the connecting shaft 50, and this connector 52 can be placed in the connecting position (A) shown in FIG. 3 and in the disconnecting position (RO) shown in FIG. ).The handle 43 can be rotated approximately 90'' between the
is in the prone position and the operating lever 42 is rotated clockwise in FIG. 4, the connecting rod 45 is pulled rearward (in the direction of arrow (X) in FIG. Continuation 4
9, the connector 52 is held at the lock position (A) perpendicular to the traveling direction of the vehicle (2).

Further, when the handle 43 is raised up as shown in FIGS. 5 and 6 and the operating lever 42 is rotated up as shown in FIG. )
The connector 5 is pressed through the swing lever 46 and the connecting rod 49.
2 is the lock release position (b) which is approximately parallel to the direction of travel of the vehicle V.
It is rotated and held.

The connection link mechanism 39 is provided with a connection release holding mechanism 54 for holding it in the connection release position.

Next, the structure of this mechanism 54 will be explained with reference to FIGS. 3 to 6 and FIG. 10. A lock pin 55 is provided protruding from the free end of the swing lever 46. As shown in FIG.

On the other hand, a lock arm 56 is pivotably supported 57 on the cross member 28 of the slide deck Ds in the vicinity of the free end of the swing lever 46, and the lock arm 56 has the lock pin 55 A notch 58 is formed that can be engaged with and disengaged from.

The lock arm 56 is engaged with the other end of a tension spring 59, one end of which is locked on the slide deck Ds, and the elastic force of the tension spring 59 is applied to the connector as shown in FIG. 52 is in the uncoupled position (b) and the coupling member 4 of the slide cylinder 3 is deviated from the receiving part 38, the notch 58 is urged to the position where it engages with the lock pin 55, and the coupling device J may be held in the uncoupled position. A link 60 is connected to the free end of the lock arm 56.
A pivot support 61 is rotatably attached to the receiving portion 38 of the slide deck Ds.
One end of a bell crank 62 is connected to the bell crank 62, and a roller 63 is rotatably supported at the free end of the bell crank 62. As shown in FIG. 35, this roller 63 is in a position where it can engage with the side surface of the slide cylinder 3 when it is extended and the connecting member 4 at its tip enters the receiving portion 38 of the slide deck Ds. This allows bell crank 6
2 is rotated counterclockwise, and the lock arm 56 is held in the unlocked position against the spring force of the tension spring 59, as shown in FIG. 3-5.

Next, the structure of the lashing link machine $1140 for the lashing bag fL for lashing the slide deck Ds onto the elevating frame Fe will be explained with reference to FIGS. 3 to 6.10. , a pair of arms 65.65 are fixed to the left and right sides of the connecting rod 45, and these arms 65.
Length-adjustable lashing rods 66, 66 are pivotally connected to 65, and these lashing rods 66, 66 extend forward;
The other ends are pivotally connected to arms 69 and 69 that are integral with lashing shafts 6B and 6B, respectively, which are rotatably supported on the cross member 28 of the slide deck Ds via platens 67 and 67. Pairs of downward lashing hooks 70, 70 are fixed to the lashing shafts 6B, 6B, respectively, and these lashing hooks 70, 70 are attached to and detached from the locked parts 13, 13 of the elevating frame Fe, respectively. It is possible to combine them freely. Therefore, the handle 4 integrated with the operating lever 42
3 is in the upright position as shown in Fig. 1.5.10, the lashing hook 70.70 rotates clockwise to the position where it engages with the locked part 13.13 of the lifting frame Fe. be.

Therefore, depending on the upright position of the handle 43, it can be easily visually confirmed from the outside that the slide deck Ds is secured to the elevating frame Fe.

There is an abutment piece 72 on the back side of the inclined surface 31 of the slide deck Ds.
is fixed, and this abutment piece 72, when the sliding deck Ds is transferred onto the lifting frame Fe, as shown in FIG.
2 to restrict the rear position of the slide deck Ds.

FIG. 11 shows a hydraulic circuit diagram C of the slide cylinder 3 for moving the slide deck Ds and the lifting cylinder 16 for lifting and lowering the lifting frame Fe.

In this circuit diagram C, the oil chamber a of the slide cylinder 3,
The wave paths 74 and 75 connected to b are connected to a hydraulic pump 77 driven by a motor M via an electromagnetic switching valve 76, or an oil sump 78.
An oil passage 79 connected to the oil chamber C of the lifting cylinder 16 is also connected to a hydraulic pump 77 or an oil reservoir 78 via an electromagnetic directional control valve 81 and an electromagnetic switching valve 80.

In FIG. 11, 82 to 85 are relief valves, and 86 is an orifice.

In FIG. 11, when the electromagnetic switching valve 76 is switched to the right side, the slide cylinder 3 is operated to extend, and when it is switched to the left side, the slide cylinder 3 is operated to contract.

Moreover, if the electromagnetic directional control valve 81 is switched to the left side and the electromagnetic switching valve 80 is switched to the left side, the lifting cylinder 16 is extended, and if the electromagnetic directional control valve 81 is switched to the right side and the electromagnetic switching valve 80 is switched to the right side, the oil chamber The pressure oil in C is returned to the oil reservoir 78 through the orifice 86, and the elevating cylinder 16 is slowly contracted by the weight of the elevating frame Fe and the elevating member 6.

Next, the operation of this embodiment will be explained.

First, mainly referring to Figures 12 (A) to (C), the cargo handling vehicle ■
To explain the procedure for unloading the cargo loaded on the loading platform A, that is, the pair of aircraft tires T, to the ground, as shown in FIG. When the vehicle body B is loaded and supported on the loading platform A in (2), the handle 43 is laid down and the lashing device is in the released state, as shown in Figure 3.4, while the coupling device J is in the coupled state. The connecting member 4 at the tip of the slide cylinder 3 in the contracted state is connected to the connector 52 of the connecting link mechanism 39. In this connected state, as clearly shown in Figure 3.4, the front of the slide deck Ds is connected to the vehicle body B.
At the same time, the inner surfaces of the pair of claw pieces 4□, 42 of the connecting member 4 abut against the m number of connectors 52,
The slide deck Ds is firmly fixed at a predetermined position on the vehicle body B by the abutment at the two locations. In this connected state, the roller 63 at the tip of the bell crank 62 is engaged with one side of the connecting member 4, so the connection release holding mechanism 54 is in an inactive state.

On the other hand, the elevating frame Fe is raised by the extension operation of the elevating cylinder 16, and is held at a raised position where its upper surface is flush with the upper surface of the loading platform A of the vehicle body B.

Next, when the slide cylinder 3 is extended from the state shown in FIG. 12(A), the slide deck Ds moves rearward and is transferred from the loading platform A onto the elevating frame Fe. At this time, as shown in FIGS. 5 and 6, the abutting piece 72 at the rear end of the slide deck Ds abuts against the stopper 12 at the rear end of the elevating frame Fe, thereby regulating the retreating position of the slide deck Ds. Turn the handle 43 with your knee to arrow R in Fig. 6 and Fig. 12 (B).
If you stand up as shown in the figure, a pair of lashing hooks 70.
As shown in Fig. 3.4, 70 rotates downward and engages the locked portion 13.13 of the elevating frame Fe. The sliding deck DS is restricted from moving backwards due to the collision, and the sliding deck Ds is restricted from moving forward due to the engagement between the lashing hook 70.70 and the locked portion 13.13.
The slide deck Ds is firmly fixed onto the elevating frame Fe.

Accordingly, when the handle 43 is raised, the connecting rod 45
is pushed in the (X') direction in FIG. It is automatically held in the disconnected state as shown in Figure 4.5.

Now, as shown in FIG. 12(C), when the slide cylinder 3 is contracted, the connecting member 4 is disengaged from the connector 52 and retreats toward the front of the vehicle V. As a result, the roller 63 at the tip of the bell crank 62 is disengaged from the side surface of the connecting member 4, and the lock arm 56 of the uncoupling holding mechanism 54 is engaged with the locking pin 55 and activated, thereby bringing the connecting device into the uncoupled state. Reliably held.

When the handle 43 is operated to stand up as described above, the slide deck Ds is firmly fixed onto the elevating frame Fe, and at the same time the connection between the slide cylinder 3 and the slide deck Ds is severed. In addition, the connection release holding mechanism 54 operates, and the connection device J is reliably held at the release position.

Next, if the lifting cylinder 16 is set in a free state, the tire T
Slide deck Ds and lifting frame Fe loaded with
are lowered together by their own weight and are grounded to the ground, allowing the tires T, T to be lowered to the ground.

In addition, in order to load the tires T and T on the ground onto the loading platform A of the cargo handling vehicle ■, the operations described above must be reversed, that is, Figure 12 (C) ~
All you have to do is perform the operation in (A).

In the above-mentioned embodiment, the case where aircraft tires are loaded and unloaded as cargo is explained, but it goes without saying that the present invention can also be applied to loading and unloading of other general cargo.

Further, in the embodiment described above, a case has been described in which the cargo handling device of the present invention is installed in a cargo handling vehicle, but it may be installed in another appropriate cargo handling location, for example, on a platform.

Further, although the above-mentioned elevating device moves the elevating frame up and down along a substantially vertical guide column, other elevating devices such as a link type elevating device may be used instead.

Further, in the embodiment described above, a hydraulic cylinder is used as a drive device for the slide deck and the lifting frame, but it goes without saying that they may be driven by other drive devices.

Furthermore, the lashing hook and the locked part, and the abutting piece and the stopper, which form a pair, may be provided anywhere on the slide deck and the lifting frame as long as their functions are not impaired. The front-rear positional relationship between the locking portion, the abutment piece, and the stopper may be reversed from that of the embodiment described above.

C9 Effects of the Invention As described above, according to the present invention, a lashing device is provided between the elevating frame and the slide deck for lashing them together, and the lashing device is provided between the elevating frame and the elevating frame. An abutting piece and a stopper that are provided on each of the slide decks and the lifting frame to control their relative positions, and a lashing hook and a locked portion that are provided on the slide deck and the elevating frame and can be releasably engaged with each other. Therefore, the slide deck can be positioned on the lifting frame and secured there securely, and excessive loads or uneven loads will not be applied to the slide deck when loading or unloading cargo onto the slide deck. The lifting frame and sliding deck can always be integrated to perform lifting and lowering operations even when the load is heavy, allowing for efficient and safe handling of heavy loads.

Furthermore, if the operating section of the lashing device is provided on the slide deck as in the embodiment described above, the lashing or release operation of the lashing device becomes easy.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a rear side view of a cargo handling vehicle equipped with the cargo handling device of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a slide deck and the body of the cargo handling vehicle. Fig. 4 is a cross-sectional view taken along the line IV--IV in Fig. 3, and Fig. 5 is a cross-sectional view taken along the line IV--IV in Fig. 3, showing the state of connection between the sliding deck and the lifting frame. 6th
The cross-sectional plan view along the line V-■, FIG.
A sectional view taken along the Vl line, FIG. 7 is a partial plan view of the slide deck showing the operating state of the connection release and holding mechanism, FIG. 8 is an exploded perspective view of the slide deck and the loading platform of the cargo handling vehicle, and FIG. 9 is the elevating frame. FIG. 10 is an exploded perspective view of the coupling device, lashing device, and decoupling/holding mechanism; FIG. 11 is a hydraulic circuit diagram of the slide cylinder and the lifting cylinder; FIG. 12 (A), ( B) and (C) are rear side views of a cargo handling vehicle showing the cargo handling process of the apparatus of the present invention. A: Loading platform, Ds: Slide deck, E: Elevating mechanism, Fe: Elevating frame, L: Lagging device 3
...Slide cylinder as a driving device, 12...
Stopper, 13...locked part, 43...operating part

Claims (2)

[Claims] (1) A loading platform (A) and a lifting mechanism (
A lifting frame (Fe
), a slide deck (Ds) movable between the loading platform (A) and the lifting frame (Fe), and the slide deck (
In the cargo handling device comprising a drive device (3) for forcibly sliding the lift frame (Fe)
A lashing device (L) for lashing them together is provided between the slide deck (Ds) and the slide deck (Ds), and the lashing device (L) is
Slide deck (Ds) and elevating frame (Fe)
an abutment piece (72) and a stopper (12) provided respectively on the slide deck (Ds) and the elevating frame (Fe), which abut against each other and regulate their relative positions; and a stopper (12) provided respectively on the slide deck (Ds) and the elevating frame (Fe) so as to be mutually removable. A cargo handling device comprising a lashing hook (70) that can be engaged with a lashing hook (70) and a locked portion (13). (2) The cargo handling device according to item (1), wherein the operating section (43) of the lashing device (L) is provided on the slide deck (Ds).