KR960006835B1 - Spreader with extension guide - Google Patents

Abstract

The spreader includes a telescopic type guide member with a hydraulic cylinder and a driving chain; a clamping means with a hydraulic cylinder, a link, and a clamper; and a fliper under the clamping means. By using the spreader, the efficiency and the stability of the containing work can be enhanced.

Description

Spreaders with telescopic guides

1 is an overall schematic view of a container crane.

2 is a front view of a spreader according to the present invention.

(A) and (b) are detailed front and side views of the portion A of FIG.

(A) (b) is a detailed front view and sectional drawing of the B part of FIG.

5 is a cross-sectional view of the three-stage stretchable guidance device.

6 is a plan sectional view of the container clamping means taken along line C-C in FIG.

Figure 7 (a) (b) is a spreader operating state of the present invention.

8 is a perspective view of a conventional spreader.

* Explanation of symbols for the main parts of the drawings

1: Container Crane 2,2 ': Container

3: spreader 4: rope

5: trolley 9: three-stage extension guide member

10: clamping means

The present invention relates to a spreader having a telescopic type guiding device which, when unloading a container, allows the container to be accurately loaded at a desired position.

In recent years, as the cranes have been enlarged, there have been many stages for loading containers, and thus, it is necessary to condition the containers to be correctly loaded at the target positions in order to avoid interference between the containers and to ensure stability.

However, conventionally, in loading and unloading containers, the spreader is suspended by a trolley installed in a crane to horizontally move the container to a target position and then load the container. At this time, when the container is loaded at a desired loading position, the loading position in the crane cab The distance is too far, and it is difficult to adjust the load position due to external force due to inertia force generated during wind and horizontal movement, and requires the skill of the driver.

Even a driver with a certain degree of skill requires a lot of time in loading a container, and accurate loading is accompanied by many difficulties.

As a result, there may be no problem in the bottom loading, but as the top is raised, the loading error accumulates and the risk of interference and instability between containers follows.

FIG. 1 is a schematic view of the land container crane 1, which briefly describes the operation of loading the container 2 by the crane 1 in the case where the container 2 of the 8th and 10th rows can be loaded as follows. .

The spreader 3 suspends the container lying on the trailer 6 and the rope 4, which is connected between the spreader 3 and the trolley 5 on the crane 1, causes the spreader 3 to move vertically. And the spreader 3 connected to the rope 4 moves in the horizontal direction as the trolley 5 on the crane 1 moves in the horizontal direction and thus hangs on the spreader 3. The container 2 'is horizontally moved to the target position.

After moving horizontally to the target position in this way, the spreader 3 should move the large container 2 'to the loading position accurately while performing vertical movement.

This operation is performed by a series of manipulations of the driver in the cab 7 moving together with the trolley 5. The distance between the cab 7 and the loading position is far and the inertial force due to the wind and the horizontal movement is performed. Due to the influence, it is not easy to load the container 2 'at the exact destination position, and there is a problem that the working efficiency is lowered as the driver spends a lot of time to find the loading position.

In order to solve this problem, an electronic spray guide system for installing CCTV on the sprayer and monitoring it in the cab has been proposed, but the electronic device is sensitive to temperature and humidity, and thus malfunctions are frequently generated. Damage is apt to occur and is not currently used.

The purpose of the present invention is to solve the above problems, it is possible to easily grasp the loading position of the container when unloading the container can be loaded stably the container and to increase the work efficiency because it can shorten the unloading operation time of the container It is to provide a spreader having an elastic material guide that can be.

This object of the invention is achieved by a spreader according to the invention with a telescopic guide and container clamping means.

The spreader according to the present invention will be clearly understood by the description described in detail below with reference to the accompanying drawings.

As shown in FIG. 2, the spreader according to the present invention vertically installs a three-stage telescopic guide member 9 at the four corners of the spreader 3, and a container clamping means 10 at the lower end of the eye patch member. It is equipped with a structure.

The three-stage telescopic guide member 9 includes a first connecting member 11 fixed to the spreader 3, a second connecting member 12 slidably inserted into the first connecting member, and the second connecting member 12. And a third connecting member l3 slidably inserted into the connecting member.

The lower end of the third connecting member 13 is equipped with a container clamping means 10 with a flipper 8 attached thereto.

As shown in FIG. 3 (a) and (b), the pivot shaft 110 of the first connecting member 11 of the three-stage telescopic guide member 9 is the hinged fixture 31 of the spreader 3. It is pivotally fixed to the side so that it can bear the load in the lateral direction (arrow D direction in FIG. 7) against the guide member.

Further, as shown in Fig. 4 (a) and (b), the crosspiece 21 of the c-shaped steel of the first connecting member 11 facing across the side surface of the cross section of the spreader 3 is shown. And by installing the spring 22 at a predetermined position of the crosspiece 21 to be able to limit the rotation of the three-stage stretch guide member (9).

As shown in FIG. 5, when the engaging jaw is formed at the end of each connecting member so that the innermost connecting member is pushed out, the outer third connecting member is caught by the inside of the engaging jaw and pushed out in sequence. The hydraulic cylinder 14 and the movable chain 16 are arranged in the third connecting member l3 in the elastic guide member 9.

The hydraulic cylinder 14 has one end fixed to the upper end of the first connecting member 11 and a connecting table 17 on which the chain 16 is installed. The sprocket 18 is installed on the connecting table 17 up and down, and the chain 16 is bitten by the sprocket.

Both ends of the chain 16 are attached with a shock absorbing means 19 such as a spring, and the shock absorbing means is fixed to the lower end of the hydraulic cylinder 14. The chain 16 and the third connecting portion 13 are connected via a connecting plate 20 fixed to the chain 16 and the third connecting member.

FIG. 6 is a plan sectional view of the container clamping means 10 taken along the line CC of FIG. 2, the clamping means 10 being mounted across the three-stage elastic guide member 9 facing each other with a flipper 8 at the bottom thereof. Is arranged to drive up and down in accordance with the stretching operation of the three-stage expansion and contraction guide member (9). In the clamping means 10, a hydraulic cylinder 23, a link 24, one end of which is connected to the hydraulic cylinder and operated by the hydraulic cylinder, and a clamper 25 connected to the other end of the link 24 are provided. .

Reference numeral 15 is a rope.

Hereinafter, the operation of the spreader having a stretchable material guide device according to the present invention will be described in detail below.

The spreader 3 of the present invention maintains the contracted state in which the three-stage telescopic guide member 9 does not operate in the state just before hanging the container 2 (shown in FIG. 7 (a)). .

When this spreader 3 is moved to a certain position by the trolley 5 to lift the container and the rope 4 is lowered so that the sprayer 3 is positioned on the predetermined container 2, the clamping means The flipper 8 fixed to the lower part of the 10 guides the spreader 3 so that the spreader 3 is accurately implanted on the container 2. The spreader 3 then picks up the container 2 and moves it by the trolley 5 and the rope 4 to a predetermined position, on the other large container 2 'with the large container 2 already loaded. Prepare to load. In order to guide the loading position of the container during the unloading operation of such a container, the three-stage stretching eye patch member 9 according to the present invention is extended downward.

When the hydraulic cylinder 14 in the three-stage expansion and contraction guide member 9 moves and descends, the pipe layer means 19 attached to both ends of the chain 16 is fixed to the hydraulic cylinder 14, so that the chain 16 and Since the sprocket 18 is rotated in the direction of arrow E of FIG. 5 while moving downward, the connecting plate 20 connecting the chain 16 and the third connecting member 13 is lowered along the chain 16. 3, the connecting member 13 is also lowered, and when the upper end of the third connecting member 13 comes to the lower end of the second connecting member 12, the catching jaw of the second connecting member is caught so that the two connecting members are lowered together. When the second connection member 12 descends to the end, the lowering of the second connection member 12 may be stopped by the latching jaw of the first connection member 11. Contraction works in reverse. When the three-stage expansion and contraction member 9 is made in this way, the clamping means 10 is also lowered to approach the lower edge of the container 2. At this time, by operating the hydraulic cylinder 23 in the clamping means 10 to clamp the clamper 25 to the lower edge hole (2a) of the container (2) to compensate for the stability of the three-stage expansion guide member (9). That is, when the three-stage expansion and contraction guide member 9 is lowered, the third connecting member 13 and the clamping means 10 are lowered, and the flipper 8 fixed thereto is also lowered together, so that the flipper 8 Guides the container 2 in the correct position on the container 2 'just below the container 2 (shown in FIG. 7 (b)). In other words, this unloading position guide operation can be performed very easily by the flipper 8, such as when lifting the container 2 in the trailer (6) at first.

When the loading position is set by the flipper 8 in this way, the container 2 is loaded, and after loading, the hydraulic cylinder 23 of the clamping means 10 is operated to clamp the clamping 25 to the lower corner hole 2a of the container. After disengaging from, the hydraulic cylinder 14 of the three-stage expansion and contraction guide member (9) to shrink the three-stage expansion and contraction member is to finish the unloading operation of the spreader.

As such, the spreader according to the present invention can not only easily set the loading position of a large container but also can shorten the working time required for the work, thereby increasing the work efficiency and improving the stability of the container because the container is loaded correctly. It has an excellent effect.

Claims (1)

In the spreader of the container crane, an expansion guide member (9) provided with a hydraulic cylinder (14) and a movable chain (16) is provided, and a hydraulic cylinder (23) and the hydraulic pressure are provided below the expansion guide member (9). The link 24 connected to the cylinder and the clamping means 10 having a structure in which the clamper 24 is connected to the other end of the link 24 are attached, and a flipper 8 is installed below the clamping means 10. Spreader provided with a telescopic guide device.