JPH0119020Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial application field> This invention is mainly used in a refrigeration system installed on a fishing boat and used to rapidly freeze fresh fish. Used for parts that support flat tanks and go up and down.

<Conventional technology> Conventionally, the quick freezing equipment installed on fishing boats is
As shown in FIGS. 6 and 7, a freezing section that stores objects to be frozen is erected like a support by a pair of hydraulic cylinders 1 and 2 with their rods 3 and 4 facing upward. A cooling body is provided with a gutter 5 to connect the upper ends of 4, and a number of cooling bodies (flat tanks) 6 in which refrigerant circulates are sequentially connected by connecting fittings 7 in the vertical direction so that they can approach each other. The group is suspended from a garter 5. This device has cylinders 1 and 2.
In the extended state shown in FIG. 7, the bread 8 containing fresh fish to be frozen is placed on each shelf-shaped cooling body 6 by hand, and the hydraulic cylinders 1 and 1 are moved as shown in FIG.
2 is shortened, and the cooling body 6 is pressed into contact with the bread 8 from above and below to rapidly freeze it. When the freezing is finished, the hydraulic cylinders 1 and 2 are extended as shown in FIG. 7, and the previously frozen cylinder is replaced with the cylinder to be frozen next, and the above operation is repeated.

<Problems to be solved by the invention> In the freezing section of the conventional device, it is quite difficult to manually put in and take out the bread 8, especially for the part below the height dimension H (approximately 50 cm) near the floor. Bread 8
When loading and unloading, the working posture becomes unnatural,
They were prone to fatigue and were prone to accidents such as strained backs.

To solve this problem, the pan 8 can be taken in and taken out by raising the cooling body 6, which is located at a low position at the bottom. For this purpose, the extended length of the hydraulic cylinders 1 and 2 of the conventional device must be
It is conceivable to increase the length by the dimension H, but since the device is installed inside a fishing boat, it is normal that it is not possible to take up extra space above, so it is not possible to increase the height of the device. There were some problems that I couldn't do.

<Means for solving the problem> The means of this invention is to connect the first hydraulic cylinders, which are paired on both sides and stand upright with the rod side up, so as to connect the upper end of the rod of the first hydraulic cylinder. The first hydraulic cylinder is suspended from the garter so that it can reach the floor surface when the first hydraulic cylinder is extended. In the rapid freezing apparatus, a second piston is fixedly provided in the middle of the outer surface of the cylinder tube of the first hydraulic cylinder, and the second cylinder tube is fitted to the second piston. A second hydraulic cylinder is provided in the second cylinder tube so that the second cylinder tube moves up and down, and when the first hydraulic cylinder is in an extended state and the second cylinder tube is in a lowered position, the cooling body and an engagement actuating portion that engages at a predetermined height position of the group.

<Function> When the first hydraulic cylinder is in a predetermined extended state, the lower part of the group of cooling bodies, in which it is difficult to take in and out the bread, is connected to the second hydraulic cylinder and the engagement actuating part provided in the second hydraulic cylinder. lift by. That is, when the cylinder tube of the second hydraulic cylinder is raised after the engagement actuation part is engaged with the cooling body group at a predetermined height position, the engagement actuation part rises while being engaged with the lower part of the cooling body group. Therefore, the lower part of the group of cooling bodies is lifted. In this state, place the bread on the lower part of the cooling body group, and then
The cylinder tube of the hydraulic cylinder is lowered to disengage the engagement actuating part, and the bread is also placed on each of the upper cooling bodies, and then the first hydraulic cylinder is shortened and frozen. How to replace bread after freezing:
With the first hydraulic cylinder in the extended state, raise the lower part of the cooling body group in the same way as above, replace the pan with the lower one, lower it, and replace the pan with the upper one as appropriate. good.

<Embodiment> In FIGS. 1 to 5, parts equivalent to those of the conventional apparatus shown in FIGS. 6 and 7 are designated by the same reference numerals, and the explanation thereof will be omitted. The device of this example is
The hydraulic cylinders 1 and 2 are a first hydraulic cylinder 1,
It is explained as 2. The difference from the conventional device is that the conventional device includes second hydraulic cylinders 10, 1.
1. The engagement actuator 12 is added.

Both of the second hydraulic cylinders 10 and 11 have the same configuration, and to explain one of them, as shown in FIGS. 2 and 3, it is fixedly attached to the outside of the cylinder tube 1a of the first hydraulic cylinder 1. A piston 20 is provided, and a second cylinder tube 21 is fitted to the piston 20, and upper and lower rod covers 2 are provided at both upper and lower ends through which the cylinder tube 1a passes.
2 and 23 are provided, and ports 24 and 25 for supplying and discharging pressure oil are provided respectively to upper and lower hydraulic chambers that are partitioned and formed in the piston 20. This second hydraulic cylinder 10 supplies pressure oil from one of the ports 24 and 25 and discharges it from the other, so that the second cylinder tube 21 has a dimension H (approximately 50 cm).
It goes up and down with the stroke of .

The engagement actuating portion 12 is provided in each second cylinder tube 21, and a pair of third hydraulic cylinders 26, 26 are attached to both sides of the upper end of each second cylinder tube 21. Each third hydraulic cylinder 26 has a piston rod 27 connected to the opposite second cylinder tube 2 as seen in FIG.
It is designed to move horizontally in opposition to the one provided at 1. In the figure, 28 is a piston, 2
9 is a third cylinder tube, 30 is a head cover, 31 is a rod cover, and 32 and 33 are pressure oil supply and discharge ports. Further, an engaging metal fitting 3 in which the tip of each piston rod 27 of the third hydraulic cylinder 26 engages with one of the cooling bodies 6 at a predetermined height position.
4 is provided. When the piston rod 27 is projected while the first hydraulic cylinders 1 and 2 are in the extended state and the second cylinder tube 21 is lowered, each engages with the engagement fitting 34.

The device configured in this way can be easily operated with one operating lever L by sequence control using, for example, the hydraulic circuit shown in FIG. In the figure,
Reference numerals 35, 36, 37, and 38 are sequence valves with appropriately different set pressures, 39 is an interlocking two-way switching valve, and 40 is an interlocking pump with the same discharge amount.

FIG. 1 shows the frozen state, in which the first hydraulic cylinders 1 and 2 are in an extended state, the second cylinder tube 21 is in a lowered state, and the piston rod 27 of the third hydraulic cylinder 26 is in a retracted state. When the lever L is operated to the right in the figure from this state to the switching position 39a, the first hydraulic cylinders 1 and 2 are first extended, and then the piston rod 27 of the third hydraulic cylinder 26 is protruded and the engaging fitting is 34, and then the second cylinder tube 21 of the second hydraulic cylinder 10 rises and stops. When the lever L is operated to the left from this state to the switching position 39b, the second cylinder 21 first descends, then the piston rod 27 of the third hydraulic cylinder 26 retreats and comes off the engagement fitting 34, and then The first hydraulic cylinders 1 and 2 are shortened and stopped. If the lever L is returned to the neutral position at any time during such operation, it will stop in that state, and if it is then returned to the switching position 39a or 39b or switched, the said operation will continue or in the opposite direction. Operate.

Therefore, from the state shown in FIG. 1, when the first hydraulic cylinders 1 and 2 are extended at the switching position 39a, the lever is returned to the neutral position, and in the stopped state, the pan 8 in the upper group 6a of the cooling body 6 is moved. When it is taken out, the state shown in FIG. 4 is achieved, and when the switching position 39a is again waited for the second cylinder tube 21 to rise, it is returned to the neutral position, and when the pan 8 in the lower group 6b of the coolant 6 that has been raised is taken out, the state is shown in FIG. becomes. In this state, place the unfrozen bread 8 on the lower group 6b in the raised position, then switch to the switching position 39b, wait for the lower group 6b of the cooling body 6 to complete its descent, bring it to the neutral position, and stop the cooling body 6. After placing the unfrozen bread 8 on top of the upper group 6a, the bread is returned to the switching position 39b, and after waiting for the first hydraulic cylinders 1 and 2 to shorten, the bread is returned to the neutral position, resulting in the frozen state shown in FIG.

In the above embodiment, the engaging metal fitting 34 is provided, but this may be omitted and the cooling body 6 may be lifted directly by the piston rod 27.

<Effects of the invention> According to this invention, the items to be frozen can be taken in and out by lifting the lower part of the cooling body (lower group), so the worker does not have to bend his or her waist too much, making the work easier. It became. Furthermore, since the lower part of the cooling body group is lifted up, the upper space may be the same as that of the conventional one, and the conventional one can be easily improved to the one of this invention. moreover,
Since the second hydraulic cylinder is provided outside the first hydraulic cylinder and the cylinder tube is moved up and down, there is almost no increase in space compared to the conventional one.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view and hydraulic circuit diagram of one embodiment of this invention, Fig. 2 is an enlarged partially sectional front view of the main part of the same embodiment, Fig. 3 is a sectional view taken along line A-A in Fig. 2,
4 and 5 are schematic front views in different states for explaining the operation of the same embodiment, and FIGS. 6 and 7 are schematic front views showing the same conventional apparatus in different states. 1, 2...First hydraulic cylinder, 3, 4...Piston rod, 5...Garter, 6...Cooling body, 7
... Connecting fitting, 8 ... Frozen object storage pan, 10,
DESCRIPTION OF SYMBOLS 11...Second hydraulic cylinder, 12...Engagement operation part, 20...Second piston, 21...Second cylinder tube.

Claims (1)

[Scope of utility model registration request] A first hydraulic cylinder that is paired on both sides and stands with the rod side facing upward; a garter that is connected to connect the upper end of the rod of the first hydraulic cylinder; and a garter that is vertically spaced apart and is accessible to each other. a group of cooling bodies that are successively connected and suspended from the garter so as to substantially reach the floor surface when the first hydraulic cylinder is in an extended state, and each cooling body has its upper and lower surfaces formed as refrigeration surfaces. In the second hydraulic pressure cylinder, a second piston is fixedly provided in the middle of the outer surface of the cylinder tube of the first hydraulic cylinder, and the second cylinder tube is fitted to the second piston so that the second cylinder tube moves up and down. an engagement actuation provided in a cylinder and a second cylinder tube to engage a predetermined height position of the group of cooling bodies when the first hydraulic cylinder is in an extended state and the second cylinder tube is in a lowered position; Cooling body group lower part lifting device consisting of a section.