JPH0127259B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is installed at the top of a test device for testing injection valves installed in large diesel engines mounted on ships, and holds the injection valves in two positions: horizontal and upright. It relates to a support device for.

B. Conventional technology Ships equipped with large diesel engines have
A fuel valve injection test device is installed to test and adjust the operating status of the spare injection valves normally installed in diesel engines. During the voyage, maintenance and inspections are carried out using a fuel valve injection testing device to ensure that the spare injection valves are always in the best condition.
Note that the fuel valve injection test device is used not only during navigation but also on land.

FIG. 1 is a drawing showing an example of an injection valve 1 whose operating state is tested by a fuel valve injection test device. In the figure, 2 is a valve body, 3 is a nozzle fixed to the tip of the valve body 2 via a cap nut 4, and 5 is a needle slidably housed in holes 2a and 3a provided in the valve body 2 and nozzle 3. be. The tip of the needle 5 is connected to a conical valve seat 3 provided in the nozzle 3.
The rear end is in pressure contact with a spring 6 housed in the valve body 2, and the spring 6 causes the tip of the needle 5 to be in pressure contact with the valve seat 3b. Note that the pressing force by the spring 6 is the same as that of the valve body 2.
Adjustment can be made using a bolt 7 screwed into the hole. 8 is an oil supply hole for supplying fuel into the pressure reservoir 3c provided in the nozzle 3, 9 is a circulation valve communicating with the oil supply hole 8, and the circulation valve 9 has a capacity of 30 kg. It is designed to open with a weak pressure of about / ^cm2 .

In the above configuration, in order to inject fuel from the tip of the nozzle 3 of the injection valve 1, the fuel is pumped from the fuel pump (not shown) to the circulation valve 9, and the pressure of the circulation valve 9 is increased. By adding the fuel, the circulation valve 9 is opened, and fuel is pumped into the pressure reservoir 3c through the oil supply hole 8 communicating with the circulation valve 9. At this time, the air in the oil supply hole 8 and the pressure reservoir 3c flows through the nozzle 3 and the holes 3a, 2a provided in the valve body 2.
The water is discharged to the outside through a drain discharge hole 10 provided in the valve body 2 through a minute gap formed between the needle 5 inserted into the holes 3a and 2a. When the pressure of the fuel accumulated in the pressure reservoir 3c reaches a predetermined position, the needle 5 resists the elastic force of the spring 6.
is pushed up, and the small hole 3 provided at the tip of the nozzle 3
Fuel is injected from d.

The above-described fuel valve injection test device that performs an injection test of the above-described injection valve 1 generally includes a plunger pump that supplies fuel to the fuel valve 1 at a predetermined pressure, and a drive device such as an air cylinder for driving the plunger pump. , is composed of a fuel tank for storing fuel supplied to the injection valve 1 by the plunger pump, and an injection box having a glass window for checking the injection state of the fuel injected from the injection valve 1. ing. When performing an injection test of the injection valve 1, the injection valve 1 is supported in an upright state on the upper part of the injection box, and the nozzle 3 located at the tip of the injection valve 1 is
After protruding into the injection box, the fuel is sucked up from the fuel tank by the plunger pump and discharged at a predetermined pressure through the high pressure hose to the injection valve 1.
The injection state of the fuel injected from the operating valve 1 is confirmed through a glass window provided in the injection box.

By the way, as a result of the injection test using the fuel valve injection test device described above, if the injection valve 1 requires adjustment, the injection valve 1 in the upright state is removed from the fuel valve injection test device, and after supporting it in a horizontal state, It is necessary to loosen the cap nut 4 screwed onto the tip of the injection valve 1 and remove the nozzle 3 from the valve body 2, and after completing the adjustment, fix the nozzle 3 to the valve body 2 again using the cap nut 4. It becomes necessary to again support the injection valve 1 in an upright state on the fuel valve injection test device and perform an injection test.

However, the injection valve 1 installed in a large diesel engine is large and heavy, so if the injection valve 1 is supported in an upright position on the top of the injection box as described above, or in a horizontal position for valve adjustment, it may be difficult to The drawback was that it required a lot of effort to do the work.

(b) Purpose of the Invention To support an injector in an upright position above the injection box of a fuel valve injection test device, and to support the injection valve in an upright position above the injection box if the injection test requires disassembly and adjustment of the injection valve. By providing an injection valve support device that supports the injection valve in a horizontal state and also allows the removal and tightening of the cap nut that fixes the nozzle of the injection valve, the support and disassembly adjustment of the injection valve on the injection box is facilitated. This makes it easy to do.

C. Structure of the Invention The injection valve support device includes a base consisting of a disk-shaped support plate, a bracket for vertically fixing the support plate onto the injection box of the fuel valve injection test device, and a support plate of the base. A rotary plate rotatably mounted, and first to fourth injectors for supporting the injection valves erected on the rotary plate.
and a support cylinder arranged between the first and second support plates for supporting a cylinder that rotates a spanner used when tightening or removing a cap nut hinged to an injection valve. It consists of a stand and a stand.

D. Embodiment FIGS. 2 to 5 are drawings showing an injection valve support device 20 for supporting the injection valve 1 in a horizontal state or an upright state on the upper part of the injection box a of a fuel valve injection test device, and The valve support device 20 includes an injection box a
The injection valve 1 is constructed of a base 21 fixed to the upper part of the injector 1, and a rotary base 22 rotatably supported by the base 21 for supporting the injection valve 1. In the figure, 23 is a disk-shaped support plate that is a component of the base 21;
Reference numeral 24 denotes a bracket that vertically fixes the support plate 23 on the injection box a.A hole 23a is provided in the center of the support plate 23 through which a shaft 27 (described later) of the rotary table 22 passes, and a hole 23a on the outer periphery is provided. There is a notch 2 formed in the rotating plate 26 of the rotating table 22, which will be described later.
A hook 25 that engages with 8 is rotatably pivoted. Reference numeral 26 indicates a disc-shaped rotating plate which is a component of the rotating table 22, 27 indicates a shaft fixed to the center of the rotating plate 26, and 28 indicates the aforementioned four hooks provided at equal positions on the circumference of the rotating plate 26. This is a notch that engages with 25. 29, 30, 31 are the flat plate 3 on the rotary plate 26
The first, second and third support plates 29, 33 are the fourth support plates erected directly on the rotary plate 26, and the first to fourth support plates 29, 3 are
0, 31, 33, as shown in FIGS. 6 to 10, arc-shaped notches 29a, 30a, 31a,
33a are provided respectively, and this notch 29
a, 30a, 31a, 33a by fitting the outer periphery of the injection valve 1 into the first to fourth positions of the injection valve 1.
It is supported on support plates 29, 30, 31, and 33. 34 is a spacer interposed between the second support plate 30 and the third support plate 31;
This spacer 34 has a half-ring shape as shown in FIG. 35 is a reinforcing plate interposed between the first support plate 29 and the second support plate 30, 36 is a reinforcing plate fixed to the fourth support plate 33, 37 is a second,
This is a cylindrical reinforcing tube placed between the third and fourth support plates 30, 31, and 33. Reference numeral 38 denotes a clamping plate pivotally connected between the second support plate 30 and the third support plate 31 by a pin 39; 38a denotes the first to fourth support plates 29 of the clamping plate 38; 30,3
This notch 38a is provided on the side facing the injection valve 1 supported on the injection valves 1 and 33, and this notch 38a is formed into an arc shape along the outer peripheral surface of the injection valve 1. Further, a pin hole 38b is provided on the free end side of the clamping plate 38, which matches the pin holes 30b and 31b provided in the second and third support plates 30 and 31. Pin holes 38b provided in the plate 38 and pin holes 30 provided in the second and third support plates 30 and 31
b, 31b, this pin hole 30
By inserting a lock pin 39 through b, 38b, and 31b, the holding plate 38 can be fixed. 40 is the first and second support plate 29, 30
The support tube 41 attached between the two is a support pin fixed to the tip of the support tube 40. The support cylinder 40 is equipped with a spanner 42 shown in FIG.
This is for supporting the cylinder 43 for rotating. 44 is a spacer that is inserted into the shaft 27 fixed to the rotary plate 26; 45 is a nut that is screwed into the threaded portion 27a at the tip of the shaft 27; the shaft 27 is inserted into the hole 23a provided in the support plate 23 of the base 21; , hole 23 at the tip of the shaft 27
By screwing a nut 45 through a spacer 44 to the portion protruding from a, the rotary table 22 is rotatably supported by the base 21.

In the above configuration, supporting the injection valve 1 by the injection valve support device 20 according to the present invention means that the injection valve 1 is supported by the first to fourth support plates 29 of the rotating table 22,
Notches 29a, 30 provided in 30, 31, 33
a, 31a, 33a, the clamping plate 38
3 in the counterclockwise direction in FIG. 3, the notch 38a of the clamping plate 38 is fitted to the injection valve 1 as shown by the dashed line in FIG. 3, and the clamping plate 38 is fixed with the lock pin 39. conduct. In order to support the injection valve 1 supported on the rotary table 22 in an upright state or a horizontal state on the injection box a of the fuel valve injection test device in this way, the rotary table 2 supporting the injector 1 must be
2 was rotated, and two of the four notches 28 provided at equidistant positions on the circumference of the rotary plate 26 of the rotary table 22 were pivotally attached to the support plate 23 of the base 21. 2
This is done by engaging the two hooks 25 and fixing the rotary table 22 in a horizontal or upright position.
2 and 3 show the injection valve 1 supported in a horizontal state, and FIG. 4 shows the injection valve 1 supported in an upright state.

In addition, in order to adjust the injection valve 1 and tighten or remove the cap nut 4 that fixes the nozzle 3 to the valve body 2 of the injection valve 1 on the injection valve support device 20, first support the injection valve 1. The rotated table 22 is fixed in a horizontal state. Next, as shown in the chain dots in Figure 5,
A spanner 42 was fitted into the cap nut 4 of the injection valve 1 which was supported horizontally by the rotary table 22, and one end of the cylinder 43 was engaged with the spanner 42, and the other end was fixed to the support cylinder 40. It is pivotally attached to a support pin 41. In this state, the cylinder 43 is extended using the discharge pressure of the plunger pump of the fuel valve injection test device, and the spanner 42 is rotated to tighten or remove the cap nut 4. In addition, when tightening the cap nut 4, use a spanner 4 as shown in the figure.
The engaging part with the cylinder 43 of No. 2 is located below,
When the cylinder 43 is extended, the spanner 42 rotates clockwise, and when loosening the cap nut 4, the engaging part of the spanner 42 with the cylinder 43 is positioned upward, and when the cylinder 43 is extended, the spanner 42 rotates clockwise. may be rotated counterclockwise.

E. Effects of the Invention As described above, the injection valve is supported on the rotary table of the injection valve support device installed on the upper part of the injection box of the fuel valve injection test device, and by rotating the rotary table, the injector is moved from the injection box. The upper part can be supported in an upright or horizontal position, and the cap nut screwed onto the tip of the injection valve, which is supported in a horizontal position by a rotary table, can be tightened or removed using a spanner and cylinder. Then, the injector, which is supported upright on the injection box, is supported in a horizontal position for disassembly and adjustment, and after the disassembly and adjustment is completed, it is again supported upright on the injection box by rotating the rotary table. In addition, the injection valve can be disassembled and adjusted from the top of the injection box. Therefore, operations such as supporting the injection valve upright on the upper part of the injection box, or supporting it horizontally for disassembly and adjustment, and disassembling and adjusting the injection valve can be easily carried out.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the injection valve, Fig. 2 is a plan view of the injection valve support device according to the present invention, Figs. 3 and 4 are side views, and Fig. 5 shows the injector support device with a spanner and cylinder 6 to 9 are drawings showing the shape of the support plate, FIG. 10 is a drawing showing the shape of the spacer, and FIG. 11 is a drawing showing the shape of the spanner. 20...Injection valve support device, 21...Base, 22
...Turning table, 23... Support plate, 24... Bracket, 26... Rotating plate, 29... First support plate, 3
0...Second support plate, 31...Third support plate, 3
3...Fourth support plate, 42...Spanner, 43...
Cylinder, 1... Injection valve, a... Injection box.

Claims (1)

[Claims] 1. A base consisting of a disc-shaped support plate, a bracket for vertically fixing the support plate onto the injection box of the fuel valve injection test device, and a base plate that is rotatably pivoted to the support plate of the base. A rotary plate, first to fourth support plates for supporting the injection valves erected on the rotor plate, and a cap nut screwed onto the injection valves arranged between the first and second support plates. 1. An injection valve support device comprising: a rotary table comprising a support cylinder for supporting a cylinder for rotating a spanner used during tightening or removal;