JPH0562695B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a load testing device for a mooring machine.

BACKGROUND TECHNOLOGY Mooring machines are used to moor ships via ropes, but the rope engagement hooks provided on these mooring machines are not strong enough to withstand a load of 60 to 100 tons or more from the ship side. is naturally required. Therefore, the hook of a mooring machine is usually mechanically subjected to a load of several tens of tons and tested to ensure that it can withstand the load sufficiently before being installed at a place of use such as a quay.

As mentioned above, the load test of the mooring machine involves applying a very large load, so the equipment is also large-scale.
And because it is dangerous, it cannot be tested in factories.
The test was carried out at a specially set up load test site. In other words, the ground of the load test site has a width of 80 cm to 1 m and a depth of 1 m.
A trench with a length of approximately 30 m was dug, and the test mooring machine was placed and fixed in the trench. A chain was hung on the hook of the mooring machine, and the other end of the chain was connected to a pneumatic or hydraulic A cylinder applies a tensile load, and a load cell detects the tensile load. Digging a trench in the ground and carrying out a load test in this way is difficult because the chain may break during the test under a large load, and the cut part may jump to the nearby area, which can be extremely dangerous. This is because it is dangerous.

Problems to be Solved by the Invention As mentioned above, the conventional load testing equipment for mooring aircraft requires large-scale equipment, requires a large safe space, and must be transported to the location for testing. Another disadvantage was that specimens that did not fit within the width or depth of the trench dug in the ground could not be tested.

The present invention solves the above problems.

Means for Solving the Problems A load testing device for a mooring machine according to the present invention has a plurality of load testing devices arranged in parallel, each consisting of a fluid cylinder and a load cell attached to the fluid cylinder to detect the output of the fluid cylinder. one end of each load test device is connected using a connecting member, and the connecting member is provided so as to be able to engage with a mooring post, and at both ends of a hook presser that can be engaged with a hook of a mooring machine. The load test device is characterized in that the other end side of the load test device is provided so as to be engageable.

Operation: The connecting plate that connects one end of multiple load test devices is brought into contact with the peripheral edge of the mooring pillar, and the other end is engaged with the hook via the hook holding device. The fluid cylinder is then actuated by tens of tons of fluid pressure. As a result, as the rod attempts to extend, its load is applied to the hook via the connecting plate, and the reaction force is received by the connecting plate engaged with the mooring pillar. Then, the output load at this time is detected by a load cell, and a load resistance test of the mooring machine is performed.

First Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. Fig. 1 is a side view of a mooring machine equipped with a load test device according to the first embodiment, Fig. 2 is a plan view, and Fig. 3 is an explanatory view from the front with the load test device partially omitted. be.

In each figure, 1 is a mooring post, and it is common for a plurality of hooks to be attached to the mooring post 1. For this reason, a shaft mounting plate 2 is provided on the mooring post 1 at one or more locations protruding in different directions when viewed from the plane.
A fixed shaft 5 is vertically provided on the shaft mounting plate 2, and a connecting member 6 is fitted to the fixed shaft 5 so as to be horizontally rotatable. The other end of the connecting member 6 is fitted with one end of two side plates 7, 7 arranged in parallel at a predetermined distance to form the body part 8 of the mooring device, and the shaft 9
The side plates 7, 7 and the connecting member 6 are connected by.

A hook 1 is attached to the tip of the side plates 7, 7 by a shaft 10.
1 is rotatably provided, and a mooring rope is hooked onto this hook 11 during normal use. In addition, by operating an operation part (not shown), the hook 11 is released from the locked state held at a predetermined angle with respect to the side plates 7, 7, and is rotated clockwise in FIG. 1 with the shaft 10 as a fulcrum. The mooring rope is configured to be rotatable and automatically detached from the hook 11. 3 is a wheel provided at the tip of the side plates 7, 7.

Reference numeral 12 denotes a load test device according to the present invention, which is constructed as follows. That is, 13 is a hydraulic or pneumatic fluid cylinder (hereinafter described as a hydraulic cylinder), and 14 is an operating rod 13 of the hydraulic cylinder 13.
15 is a load cell attached to the tip of the spacer 14, and 15a is a protrusion provided on the load cell 14. The shaft support 13a provided at the end of the hydraulic cylinder 13 is supported by a support fitting 16.
The support shaft 16a is placed on the side of the support shaft 16a, and the support shaft 1
They are joined by 7. As a result, hydraulic cylinder 1
3 is rotatably connected to a support fitting 16 with a support shaft 17 as a fulcrum.

The support fitting 16 receives stress from the hydraulic cylinder 13 side, and guides the protrusion 16b and abuts against the distal end surface of the support substrate 18 in a vertically slidable manner. The support fitting 16 is provided with a female threaded portion 19, into which a long adjustment bolt 20 is screwed. The upper part of the adjustment bolt 20 is rotatably supported by a shaft support 21 that is integrally provided on the upper front surface of the support board 18. Therefore, by rotating the adjustment bolt 20 in the forward and reverse directions, the support fitting 1 can be adjusted.
The position of the hydraulic cylinder 13 is adjusted by moving up and down to correspond to the installation angle of the hydraulic cylinder 13 during various tests. 22 is the adjustment bolt 20
It is a locking nut designed to prevent it from rotating unnecessarily.

As described above, the test device 12 consisting of the hydraulic cylinder 13, spacer 14, load cell 15, etc. connected in series in the longitudinal direction is shown in FIG. The left and right support substrates 15, 15, which are arranged parallel to each other and which receive force on the proximal end side of each test device 12, are connected by connecting members provided at the upper and lower portions thereof. That is, the spacing plate 23 is disposed as a connecting member on the upper part of the support substrates 18, 18, and the screw shafts 23a protruding from both ends thereof are inserted into the shaft holes of the support substrates 18, 18, and the nuts 24 are inserted from both outsides. , 24. Rear side of spacing plate 23 (left side in Figure 2)
is provided with a receiver 23b, and the receiver 23b is provided with a receiver 23b.
The arcuate receiving surface 23b' of b is provided so as to be in contact with the arcuate surface of the head of the mooring column 1. Reference numeral 25 denotes support pieces protruding from the upper and lower surfaces of the spacing plate 23. The support pieces 25 sandwich the upper and lower surfaces of the receiver 23b, and the pin shaft 26 passes through the receiver 23b vertically.
b and the spacing plate 23 are combined.

On the other hand, a cylindrical spacer 2 is provided at the bottom of the support substrate 18.
A connecting shaft 28 fitted with a connecting shaft 7 is provided, and screw shafts 28a at both ends of the connecting shaft 28 are inserted into shaft holes 36 of the support substrate 18, and then tightened with nuts 29 from both outside sides. Further, a lower receiver 30 is disposed at the lower ends of the left and right support boards 18 and between the mooring pillar 1, and the arcuate receiving surface 30a of the receiver 30 is connected to the lower arcuate surface 1a of the mooring pillar 1. It is designed to apply to Note that the upper and lower supports 18 are connected to the upper and lower receivers 23b, 3.
It is an example that the mooring pillar 1 is provided so as to be engaged with the mooring pillar 1 via the mooring pillar 1. For example, by changing the structure of the rear part of the support substrate 18, the support substrate 18 may be engaged with the mooring column 1, or the receivers 23b, 30
Even when using a mooring pier, its structure may be changed as appropriate depending on the structure of the mooring pier 1.

Reference numeral 31 denotes a hook presser, which is provided in a shape in which the central part is curved to one side when viewed from a plane.
The inner side of the load cell 1a is engaged with the hook 11, and the protrusion 15a provided at the tip of the load cell 15 can be engaged with the recessed portions 31b provided at both ends.

Reference numeral 32 denotes an arm member having a U-shaped cross section, and is fixed to the lower side surfaces of the left and right support substrates 18 by bolts or welding with its upper and lower bent portions bent outward as shown in FIG. 33, 33... are supports disposed on the inner surface of the arm member 32 so as to be movable up and down. The support 33 is made of angle material.
3, by loosely fitting an adjustment bolt 35 provided through the arm member 32 into a long hole 34 provided in the vertical direction, and tightening or loosening a nut (not shown) screwed into the adjustment bolt 35. Each support 3
2, 32... can be individually moved and adjusted to a predetermined height and fixed at that position.

The supports 32 support the test device 12 at a predetermined angular position, that is, each support 32, 3
2...at the upper end of the hydraulic cylinder 13, spacer 12,
It supports the load cell 15 and the hook presser 31. The pair of left and right test devices 12, 12, the upper spacing plate 23, the arm member 32, and the support 33 are a set, and each of these members can be attached to and detached from the mooring pillar 1 in the vertical direction.

Next, the mode of use will be explained.

First, the lower connecting shaft 28 shown in FIGS. 1 and 3 is pulled out from the shaft hole 36 of the left and right support substrates 18, and then
The load test device 12 is slowly lowered from above the front side of the mooring pillar 1, that is, the side where the hook 11 is disposed, and is set in the state shown in FIG. Next, the lower connecting shaft 28 is again inserted into the shaft hole 35 of the support substrate 18, and the nut 24 is tightened. Also, at this time, the protrusion 15a of the load cell 15 is engaged with the recess 31b of the hook presser 31. Once the preparations have been completed in this way, the hydraulic cylinder 13 is driven to produce an output of the size (for example, several tens of tons) to be subjected to the load test. At this time, the output is applied to the hook 11 via the hook presser 31, and the reaction force is also applied to the load cell 15. Therefore, it is possible to detect this with the load cell 15 and perform a load resistance test on the mooring machine. Also,
The force applied to the rear of the hydraulic cylinder 13 (on the left side in FIG. 1) is received by the mooring post 1 via the support metal fitting 16, the support base plate 18, and the upper and lower receivers 23b and 30.

However, as the ship moves up and down with the tide and loading and unloading cargo, the rope from the ship's side that is hung on the hook 11 of the mooring machine is attached to the hook 11 of the mooring machine.
will be pulled upward or downward. Therefore, it is necessary to perform a load test on a mooring machine by applying a load to the hook 11 not only in the horizontal direction but also in a state where it is tilted at a certain angle as shown by the chain line in FIG. 1, for example. In this case, the load test device 12,1
2 from the solid line to the chain line in FIG. 1, loosen the adjusting bolts 35 that support each arm 33, 33...
is adjusted to a height that allows the load test device 12 to be supported at an angle, and then the adjustment bolt 35 is tightened and fixed. At this time, the position of the load test device 12 is lowered so that the other end side does not become unbalanced, and this operation is performed by rotating the adjustment bolt 35 and lowering the support fitting 16. In this way, it is possible to perform a load test on the hook of a mooring machine within a certain angular range with one device, with the front end side of the load test tool 12 facing upward or downward.

Second Embodiment FIGS. 4, 5, and 6 show a second embodiment of the present invention, which is basically the same as the first embodiment. Therefore, the same parts as in the first embodiment are given the same reference numerals, and the explanation thereof will be omitted, and the different parts will be explained.

In the second embodiment, the arrangement order of the hydraulic cylinder 13 and the load cell 15 is changed from that of the first embodiment. That is, a hydraulic cylinder 13 is provided on the tip side of the load test device 12, and its operating rod 13
is provided so as to fit into the recess 31b of the hook presser 31. A load cell 15 is connected to the rear side of the fluid cylinder 12 (on the left side in FIG. 5). The load cell 15 is coupled to the spacer 14 located on the rear side. 37 is a support fitting. The support fitting 37 is screwed into the adjustment bolt 20 so as to be movable up and down, and is provided in contact with the front end surface of the support substrate 18 via a guide plate 38 so as to be movable up and down, and has a predetermined angle formed at the tip. The inclined contact surface 37a of the spacer 14 is in contact with the rear end surface of the spacer 14.

Furthermore, in the second embodiment, the structure of the mooring bollard 1 is different from that of the mooring bollard 1 shown in the first embodiment, and accordingly, the support substrate 18 is brought into direct contact with the lower peripheral surface of the mooring bollard 1. . That is, the mooring post 1 has a base 1a, a rising portion 1b, and an upper overhanging portion 1c, and an arcuate receiving surface 23c formed at the rear of the upper spacing plate 23 is applied to the curved surface of the overhanging portion 1c. There is. Further, the support substrate 18 is provided in an inclined manner, and a notch 18a is formed at the rear of the lower end, and the base 1a of the mooring pier 1 is formed in this notch 18a.
The peripheral edges of the two are engaged. Other configurations are the first
It is the same as the example.

Therefore, also in this second embodiment, a load is applied to the hook 11 by the hydraulic cylinder 13,
The magnitude of the load can be detected by the load cell 15 and a test can be performed. In addition, in FIG. 4, the angle of inclination of the inclined contact surface 37a of the support fitting 37 is applied when the load test device 12 is installed horizontally (that is, the angle of inclination of the support fitting 37 is such that the reaction from the hydraulic cylinder 13 can be carried out most smoothly at this angle of inclination. The force is received by the support fitting 37 and transmitted to the support substrate 18). Therefore, when the load test device 12 is tilted as shown by the chain line in FIG. It is to be replaced.

Effects of the Invention As described above, the load testing device of the present invention is very compact, convenient to carry, and easy to install on a mooring machine. Therefore,
Unlike conventional methods, it does not require a large space or a test device with a complicated mechanism, and since it does not use a traction chain or the like, it is possible to safely perform tests by applying the necessary load to the hook without the risk of cutting it. I can do it.

Furthermore, in rope load remote monitoring type mooring machines that have load cells built into the spindles, the degree of influence on the load cells varies due to the shape of the mooring machine body, differences in assembly, etc., and the characteristics of the hooks. After the mooring machine is installed, it is necessary to calibrate each mooring machine individually, and it is necessary to perform a test by applying a predetermined load to the hook with the mooring machine installed, but according to the present invention, it is possible to easily calibrate the mooring machine's hook. A required load can be applied to the load cell, and it becomes possible to easily confirm whether the display of the load cell is correct and to quickly calibrate it.

[Brief explanation of the drawing]

1 to 3 show the first embodiment of the present invention and the fourth embodiment of the present invention.
Figures to Figures 6 also show the second embodiment, Figures 1 and 4 are side views of the load testing device according to the present invention installed on a mooring machine, and Figures 2 and 5 are the same plane. Figures 3 and 6 are front views showing the load test device with some parts omitted. 1... Mooring pillar, 5... Fixed shaft, 8... Body part,
11...Hook, 12...Load test tool, 13...
Liquid cylinder, 13a... Actuation rod, 15...
Load cell, 18... Support substrate, 31... Hook presser.

Claims (1)

[Claims] 1. A plurality of load test devices consisting of a fluid cylinder and a load cell attached to the fluid cylinder to detect its output are arranged in parallel, and one end of each load test device is connected using a connecting member. , the connecting member is provided so as to be engageable with a mooring post, and the other end of the load test device is provided so as to be engageable with both ends of a hook presser that is engageable with a hook of a mooring machine. A load testing device for mooring aircraft.