JPH045983Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is applicable to a support device for supporting a group of objects to be frozen in a freezing device installed on a fishing boat and used for quickly freezing fresh fish. It relates to devices used in devices that support groups of bodies and move them up and down.

<Conventional technology> Conventional rapid freezing equipment installed on fishing boats is
As shown in FIGS. 5 and 6, 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 beam-like member 5 is provided so as to connect the upper ends of 4, and a large number of supports 6, each having a support surface for supporting the frozen object on the upper surface and in which a refrigerant circulates, are arranged vertically so that they can approach each other. The structure is such that a group of supports 6 sequentially connected in the direction by connecting fittings 7 are suspended from a beam-like member 5. In this device, with the cylinders 1 and 2 extended as shown in Fig. 6, a pan 8 containing fresh fish to be frozen is manually placed on a shelf-shaped support 6, and then hydraulically By shortening the cylinders 1 and 2, the pan 8
The support body 6 is brought into pressure contact with the top and bottom of the sample to perform rapid freezing. When the freezing is completed, the hydraulic cylinders 1 and 2 are extended as shown in FIG. 6, and the previously frozen cylinder is replaced with the cylinder to be frozen next, and the above operation is repeated.

With such a conventional device, it is quite difficult to manually put in and take out the bread 8, especially in areas where the height H from the floor is about 50 cm or less.
When loading and unloading, the working posture becomes unnatural,
The problem was that they were easily fatigued and were prone to accidents such as strained backs.

In order to solve this problem, the support body 6 located at a low position at the bottom may be raised to allow the pan 8 to be taken in and taken out. To achieve this, it is conceivable to increase the extended length of the hydraulic cylinders 1 and 2 of the conventional device by the dimension H, but since the device is installed inside a fishing boat, extra space is required upward. In general, it is not possible to increase the height of the device, and the height of the device cannot be increased. Therefore, the applicant previously proposed a device in Utility Application No. 59-174127 (Utility Model Application No. 61-89779) in which the device was lifted to the lower part of the group of supports 6 without changing the height dimension of the device. did. As shown in FIGS. 7 and 8, the device includes hydraulic cylinders 1 and 2 shown in FIGS.
1. This is a configuration added to the engagement actuation section 12. Second
Hydraulic cylinders 10 and 11 are the same, and one
0 will be explained. The second hydraulic cylinder 10 is
A second piston (not shown) is provided in the middle of the cylinder tube 1a of the hydraulic cylinder 1, the second cylinder tube 21 is fitted to the piston, rod covers are provided at both upper and lower ends through which the cylinder tube 1a passes, and the piston Pressure oil supply and discharge ports 24 and 25 are respectively provided to upper and lower pressure chambers formed by partitioning the inside of the second cylinder tube 21.
It has been established. The engagement actuator 12 is provided with an engagement hydraulic cylinder 26 at the upper end of the second cylinder tube 21, so that the tip of the piston rod 27 can engage and release the piston rod 27 at the height of the support 6. There is. Therefore, in a state where the hydraulic cylinders 1 and 2 shown in FIG. 7 are extended, the second cylinder tube 21 is lowered, and the engagement actuation part 12 is not operating, the engagement actuation part 12 is actuated to perform a predetermined operation. When the second cylinder tube 21 is raised, the lower part of the group of supports 6 is raised as shown in FIG. The lowest part of the support 6 will be lifted up to a height of about 50 cm from the floor.

<Problems to be solved by the invention> The conventional Utility Application No. 59-174127 has a second piston provided in the longitudinally intermediate portion of the cylinder tube 1a of the first cylinders 1 and 2, and the cylinder tube 1a is Since the piston rod is configured as a double rod cylinder and the second cylinder tube 21 is provided, there is a problem that the stroke of the second cylinder tube 21 cannot be more than about 1/2 of the length of the first cylinder tube 1a. In other words, the device for lifting the lower part of the support group in the conventional apparatus for supporting the group of supports for frozen objects, when manufactured for fishing boats, has a maximum dimension of about 50 cm to lift the lower part of the support group, which is not sufficient. In order to make it easier to take in and take out the bread 8, it is desirable that the lifting dimension H is considerably greater than 50 cm.

<Means for solving the problem> The means of this invention consists of a double-acting type first cylinder that is paired on both sides and stands with the rod side facing up;
a beam-like member provided across the upper end of the rod of the cylinder; and the beam-like member is successively connected to each other so as to be accessible to each other at intervals vertically, so that the first cylinder substantially reaches the floor surface when the first cylinder is in an extended state. In the apparatus for supporting a support group of objects to be processed, the support is suspended from a substrate and each support is provided with an object support section, and a second piston is fixedly provided on the rod cover section of the first cylinder. A second cylinder fitted with a second cylinder tube so that the second cylinder tube moves up and down; and a second cylinder provided in the second cylinder tube, with the first cylinder in an extended state and the second cylinder tube in a lowered position. and an engagement actuating section provided to engage with a predetermined height position of the support group at a certain time.

<Operation> When the second cylinder tube is raised in a state in which the engagement operating portion provided on the second cylinder tube is engaged with the support group at a predetermined height position, the lower part of the support group is lifted. Its maximum lifting dimension is the maximum stroke of the second cylinder tube. The maximum stroke of the second cylinder tube is that since the second piston is provided in the rod cover of the first cylinder, the second cylinder tube can be formed to have approximately the same length as the first cylinder tube, and the stroke is also the same as that of the first cylinder. It can be made approximately equal to the tube length.

<Example> An example of this invention will be described with reference to FIGS. 1 to 4. In the figures, parts equivalent to those of the conventional apparatus shown in FIGS. 5 and 6 are designated by the same reference numerals, and their explanations will be omitted. The apparatus of this embodiment has been explained by assuming that the hydraulic cylinders 1 and 2 are first hydraulic cylinders 1 and 2. The main difference from the conventional device shown in FIGS. 7 and 8 is the configuration of the second hydraulic cylinders 31 and 32.

The second hydraulic cylinders 31 and 32 are both the same, so to explain one of them 31, as shown in FIG. Two pistons 33 are integrally provided, a second cylinder tube 34 is fitted to the second piston 33, an upper rod cover 35 is provided at the upper end of the second cylinder tube, and a lower rod cover 36 is provided at the lower end. The upper rod cover 35 is the first
The piston rod 3 of the cylinder 1 passes through it,
The cylinder tube 1a of the first cylinder 1 passes through the lower rod cover 36, and the second hydraulic cylinder is formed into a double-acting double-dot cylinder.
In the figure, A, B, and C are ports for supplying and discharging pressure oil, and 37 is a communication hole. Port A communicates with the lower pressure chamber 38 of the piston 3a of the first hydraulic cylinder 1, port B communicates with the lower pressure chamber 39 of the piston 33 of the second hydraulic cylinder 31, and port C communicates with the lower pressure chamber 38 of the piston 3a of the first hydraulic cylinder 1. The communication hole 37 communicates with the upper pressure chamber 40 of the piston 33 of the first cylinder 1 and the upper end of the upper pressure chamber 41 of the piston 3a of the first cylinder 1 and the pressure chamber 39.
It communicates with Pressure chamber 4 of second piston 33
The effective pressure receiving area on the 0 side is larger than the effective pressure receiving area on the pressure chamber 41 side of the first piston 3a.

Note that the engaging operation section 12 is the same as that shown in FIGS. 7 and 8.

The support group lower part lifting device in the apparatus for supporting a frozen object support group configured as described above is used with a hydraulic circuit provided therein, as shown in FIG. 1, for example.
In the figure, 50 and 51 are electromagnetic pilot valves, 52 and 53 are pilot type dual switching valves, and 5
4 and 55 are pressure switches, 56 is an interlocking pump device having two discharge ports 56a and 56b with the same discharge amount, 57 is a rise command pushbutton switch, 58 is a fall command pushbutton switch, and 59 is a stop (neutral) command pushbutton. It's a button switch. With this hydraulic circuit, when the switch 57 is turned ON in the state shown in FIG. 1, pressure oil is supplied to port A and oil is discharged from port B, so that the first hydraulic cylinders 1 and 2 are extended.
Next, the engagement actuator 12 is actuated by a hydraulic circuit (not shown) to enter the engaged state, and then pressure oil is supplied to the port C and oil is discharged from the B port, so that the second cylinder tube 34 is raised and stopped in the state shown in FIG. 3 in this order. Further, when the lowering command push button switch 58 is turned on in the state shown in FIG. 3, the operation opposite to that described above is performed. That is, pressure oil is supplied to port B, oil is discharged from port C, the second cylinder tube 34 is lowered, the engagement actuator 12 is brought into a disengaged state, and then pressure oil is supplied to port B. At the same time, oil is discharged from port A and the first hydraulic cylinders 1 and 2 are contracted. When the stop command switch 59 is turned ON, the switch 57 or 58 changes from ON to OFF, the above operation is interrupted, and then the switch 57 or 58 turns OFF.
By turning on 8, the operation continues from the interrupted state.

Therefore, in actual use, when the freezing process is completed in the state shown in FIG. 1 by operating the push button switches 57, 58, 59, the first hydraulic cylinders 1, 2
, and take out the upper pan 8 to bring it into the state shown in FIG.
The cylinder tube 34 is raised and the bread 8 at the bottom is taken out to form the state shown in FIG.
is lowered to the state shown in FIG. 2, the unfrozen bread 8 is stored in the upper part, the engagement actuator 12 is disengaged, and the first hydraulic cylinders 1 and 2 are contracted to the state shown in FIG. Freezing treatment will be carried out as follows.

The device for lifting the lower part of the support group in this device is:
Since the extended state of the first hydraulic cylinders 1 and 2 is about 2 m, and the length of the first cylinder tube 1a is about 1 m, the second hydraulic cylinder tube 34 can be formed to have a stroke of about 1 m. Therefore, the lifting dimension of the lower part of the support group can be approximately doubled compared to the conventional structure. As a result, the lower part of the support group can be used at a height more convenient for loading and unloading bread therefrom.

The above embodiment was used in a quick freezing device for a fishing boat, but in other cases where an article to be processed is supported on or removed from a support in a narrow space,
For example, it can be applied to devices related to article cooling devices, article drying devices, and the like.

<Detailed Description of the Invention> According to this invention, the lower lifting dimension of the support group can be increased compared to the conventional one, so that workability is improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view and hydraulic circuit diagram of an embodiment of this invention, Fig. 2 is a schematic front view showing the extended state of the first cylinder of the embodiment, and Fig. 3 is a schematic front view of the support group of the embodiment. A schematic front view showing a state in which the lower part is lifted;
FIG. 4 is a schematic longitudinal sectional front view showing the structure of the first and second cylinders used in the same example, FIG. 5 is a front view of a conventional refrigeration system without a support group lower lifting device, and FIG. 5 is a front view of the same device shown in a different state, FIG. 7 is a front view of a refrigeration device equipped with a conventional support group lower lifting device, and FIG. 8 is a front view of the same device as shown in FIG. 7 in a different state. It is. 1, 2...first cylinder (first hydraulic cylinder),
1a...Cylinder tube of the first cylinder, 1b
... Rod cover of the first cylinder, 3, 4 ... Rod of the first cylinder, 5 ... Beam-like part, 6 ... Support body, 12 ... Engagement operation part, 31, 32 ... Second cylinder, 33 ...Second piston, 34...Second cylinder tube.

Claims (1)

[Scope of utility model registration request] A double-acting first cylinder is paired on both sides and is erected with the rod side facing upward, and a beam-like member provided across the upper end of the rod of the first cylinder approaches each other with an interval above and below. a group of supports for objects to be processed, each of which is connected in sequence so as to be suspended from the beam-like member so as to substantially reach the floor surface when the first cylinder is in an extended state; In the apparatus, a second piston is fixedly provided on the rod cover portion of the first cylinder, and a second cylinder tube is fitted to the second piston so that the second cylinder tube moves up and down.
a cylinder and a second cylinder tube so as to engage with a predetermined height position of the support group when the first cylinder is in an extended state and the second cylinder tube is in a lowered position. A device for lifting a lower part of a support group, comprising an engagement actuation section.