JPH07304524A - Cold air discharge preventive device at cargo handling work in shelter of large cold storage - Google Patents

Abstract

PURPOSE:To perfectly cut off the cold air over the whole circumference of a shelter inlet part by arranging plural divided type urethane pads and a balance shaft to support upper parts of a pair of suspending chains, and providing guide devices on both ends of the balance shaft and adjusted height position fixing lock devices on both ends of a pad support lever. CONSTITUTION:Plural divided type urethane pads 4 are supported with a pad support lever 5 so as to be capable of longitudinally swinging. A pair of left and right suspending chains 9 are installed on both sides of the pad support lever 5, and upper parts of the pair of suspending chains 9 are supported with a balance shaft 10. A wire 11 whose one end is connected to an intermediate position of the balance shaft 10 and other end is connected to a level controller 13, is supported with pulleys 12 above a shelter. Guide devices 14 are arranged on both ends of the balance shaft 10, and metal fittings 8a and magnets 8 are added to both ends of the pad support lever 5, and lock the adjusted height position. Thereby, the cold air can be perfectly cut off over the whole circumference of a shelter inlet part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool air discharge prevention device for a shelter in a large-scale frozen warehouse. In particular, the present invention relates to a cool air discharge prevention structure that is in the lower part of the shelter and in contact with the lower part of the vehicle.

[0002]

2. Description of the Related Art Due to breakthroughs in freezing technology for food products,
Many frozen foods were born, and the cold storage technology has made remarkable progress, and it has become possible to finely adjust the internal cold storage temperature by controlling various computers. However, there is still an inadequate portion in the cold air discharge prevention device in the shelter portion which is the entrance from the refrigeration container or the refrigeration vehicle to the refrigeration warehouse. This is because there is a difference in vehicle height between the refrigerated container car and the front of the shelter depending on the vehicle type, and a gap is created between the rear part of the car and the platform. This is because the air cannot be shut off and cold air is discharged. Especially in the summer season, dew condensation occurs in the shelter area, which causes a problem of negative cold storage effect.

Conventionally, in order to prevent such a phenomenon, a head pad or a head cover is provided on the upper side and both sides of the entrance of the shelter portion so as to be in close contact with the upper and side portions of the opening of the truck to shut off the outside air.
It is known that a ten is attached and a horizontally long rubber bumper is attached to the lower part thereof to block the four rounds of the shelter inlet.

However, in such a structure, the upper part and the left and right sides are good, but there is a problem with the horizontally elongated rubber bumper at the lower part. That is, there are various heights of the rear portion of the refrigerating car, and it is impossible to cope with the change. In addition, the rear part of the refrigerating car is not flat, and there are many irregular irregularities in the front-back direction.
For this reason, a gap is formed in this portion, which causes insufficient airtightness.

Not only is the airtightness insufficient, but the irregular bumps and bumps on the rear part of the vehicle may cause the bumps to hit rubber bumpers or the like and cause them to partially rupture. It is very uneconomical because all the replacements will be necessary.

[0006]

In view of the above problems, it is necessary to completely shut off the cool air over the entire circumference of the shelter inlet, and to make it easier for the operator even if the height of the refrigerating vehicle changes. The present invention aims to provide a cold air discharge prevention device capable of coping with a change in height, and that even if it is partially damaged by rough work, it can be easily repaired. To do.

[0007]

Means for Solving the Problems A plurality of split type urethane pads 4 supported on a pad support rod 5 so as to be capable of swinging back and forth,
A pair of left and right suspension chains mounted on both sides of the support rod 5.
9 and a balance shaft 10 supporting the upper parts of the pair of suspension chains 9, one end of which is attached to an intermediate position of the balance shaft 10 and the other end of which is connected to a level controller 13 by a pulley 12 above the shelter. Supported wire 1
1 and a guide device 14 provided at both ends of the balance shaft 10 and a lock device for fixing the adjusted height position provided at both ends of the pad support rod 5. In front of the split-type urethane pad 4, a chain for suspending the pad supporting rod 5 is provided.
A foot plate 7 supported on the upper end of 7a is provided so that the height can be easily adjusted. The split urethane pad 4 has an inverted trapezoidal shape, and its upper end is supported by the pad supporting rod. Further, the split type pad support rod 5 is made hollow, and sand is filled between the plugs 5a inserted at both ends to also serve as reinforcement.

[0008]

The split urethane pads 4 are positioned in accordance with the height of the platform 2. At this time, it can be adjusted to an arbitrary height position by the level controller 13.
Stop the vehicle in front of the shelter 1 during cargo handling work. Then, the foot is put on the footboard 7 under the shelter 1 and pushed down, and the pad support rod 5 is pulled toward you to bring the metal fitting 8a close to the magnet 8 to attract it and lock the height position. The vehicle is further moved backward so as to be pressed against the split-type urethane pad 4 ... Then, the split-type urethane pads 4 ... Follow the unevenness of the rear part of the vehicle to eliminate any gaps.

[0009]

Embodiments will be described with reference to the drawings. In FIG. 1, 1 is a shelter and 2 is a platform (FIG. 2). The refrigerating car R is retracted to the front end of the platform 2 as shown in FIG. 3, and a cold air discharge prevention device (hereinafter simply referred to as a device) A according to the present invention shuts off the lower opening of the rear part of the vehicle from the outside air to load cargo. Do a defeat.

The shelter is shielded from the outside air by airbags 3 and 3 on both sides and a head pad (not shown) on the upper portion. The device at the lower part of the opening is composed of a plurality of split type urethane pads 4 provided side by side. A plurality of split urethane pads 4 (five in the figure) are pivotally supported by a pad support rod 5 so as to be rotatable back and forth. The split type urethane pad 4 is filled with urethane foam inside, as shown in FIG.
It has a downward trapezoid as shown in. Reference numeral 6 denotes a pivot metal fitting provided at the upper end of the split type urethane pad 4, which is passed through the pad support rod 5. Since the plurality of split-type urethane pads 4 are pivotally supported by the pad support rods 5 via the pivot support metal fittings 6 fixed to the side ends thereof, when the refrigeration vehicle retreats, complicated unevenness exists on the rear portion of the vehicle. However, it is possible to freely follow this unevenness. Therefore, even if a partial breakage occurs as in the case of the conventional one, it is not necessary to replace the whole and it is economical.

Fixed pads 4a are installed on the shelter side on both sides of the plurality of split urethane pads 4 so as to cover below the lower ends of the airbags 3 on both sides of the shelter. Reference numeral 7 denotes a tread plate, which is located at the front of the split type urethane pad 4 at the intermediate position, and is suspended on the pad support rod 5 by a chain.
7a etc. Reference numeral 8 denotes a magnet provided on the shelter side, which is provided at the lower portion of the shelter side and has a metal fitting 8a fixed to the end portion of the pad support rod 5 magnetically attached thereto to lock the height position. In this locking work, when a worker steps on the foot plate 7, the support rod 5 is pulled forward together with the split urethane pad 4, and the metal fitting 8a is attached in close proximity to the magnet 8 to lock its position. Of course, this locking device can be another mechanical fixing device.

Both ends of the pad support rod 5 are supported by suspension chains 9. The upper end of the suspension chain 9 is suspended on the balance shaft 10. A wire 11 is attached to the center of the balance shaft 10. The wire 11 is stretched through pulleys 12 and 12 provided on the ceiling of the shelter 1 as shown in FIG. 3, and the level controller 1 is attached to the other end of the wire 11.
Connected to 3. Reference numeral 14 is a guide device. This is the bracket 1 attached to the shelter 1 side, as shown in FIG.
The vertical axis 16 is fixed between the five flanges 15a and 15b.
A short tube 17 having a lateral projection 17a is vertically slidably fitted on the vertical axis 16. The end of the balance shaft 10 is inserted into the lateral protrusion 17a. When the balance shaft 10 is moved up and down by the wire 11, both ends thereof are guided by the vertical axis 16 through the short tube 17 and moved up and down, so that the balance shaft 10 can be smoothly moved up and down. The guide device also functions as a safety device for preventing the balance shaft 10 from falling when the wire 11 is cut off due to some accident in addition to the guide.

The level controller 13 is a so-called spring balancer (for example, a trade name of Endo Kogyo Co., Ltd.).
To use. This is a tool that can suspend an electric tool or the like and stop it at an arbitrary position. As shown in FIG. 7 (b), the pad support rod 5 is a short tube having a hollow tube with a plug 5a at its end.
5b is fixed and sand is filled between the left and right short tubes 5b, 5b to maintain the strength. That is, when the supporting rod is impacted by being filled with sand or the like, the strength of the portion against the dent becomes large.

With the above-mentioned structure, the split urethane pad 4 wrapped with urethane and a special sheet is sandwiched between the contact portion between the lower part of the shelter and the rear part of the refrigerated vehicle, and cold air discharge can be prevented. . The support rod 5 supporting the split type urethane pad 4 is hooked down by a suspension chain 9 and further connected to the level controller 13, so that the level of the urethane pad can be continuously changed according to the vehicle height. Can be set. Further, the footboard 7 for adjusting the height of the pad is provided, and the height position can be easily and safely adjusted from below the shelter 1.

[0015]

[How to operate the device]

(1) In a large-sized vehicle, the split urethane pads 4 ... Are positioned in accordance with the height position of the platform 2, so the vehicle retreats as it is. (2) For small and medium-sized vehicles, stop the vehicle before the shelter 1. Put your foot on the footboard 7 under the shelter 1 and push it down. The pad support rod 5 is pulled toward you, the metal fitting 8a is brought close to the magnet 8 and attracted, and the position is locked. (3) The vehicle is moved backward so as to be pressed against the split urethane pads 4 ... Then, the split-type urethane pads 4 ... Follow the unevenness of the rear part of the vehicle to eliminate any gaps. (4) After the loading work is completed, if the vehicle is left as it is, the unevenness of the split urethane pads 4 ... naturally disappears, and the height of the split urethane pads 4 ... Return to height for heavy vehicles.

[0016]

[Effect] Since the four sides of the rear part of the vehicle are completely covered by the airbag on both sides of the shelter 1, the head pad on the upper part, and the cold air discharge prevention device of the present invention on the lower part, the loss of electric power due to the conventional cold air discharge phenomenon is reduced. Therefore, a highly effective effect can be obtained as an in-house device that enhances the original food preservation of frozen foods.
In particular, the dew condensation phenomenon on the floor, which had occurred in the summer due to the relationship between the outside air and the cold air inside the refrigerator, no longer occurs. Further, since a plurality of split urethane pads 4 ... Are supported by a supporting rod 5 so as to be capable of swinging back and forth, even if there is a complicated unevenness on the rear part of the vehicle, it is possible to prevent it from dissipating cold air. Further, the guide device 14 and the level controller 13 can move up and down in a smooth manner and can be easily stopped at an arbitrary height position, so that the burden on the operator is reduced.

[Brief description of drawings]

FIG. 1 is a front view of a shelter provided with a cool air discharge prevention device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 shows a state in which the refrigeration vehicle approaches the state of FIG. 2 in the backward direction.

FIG. 4 is a plan view of FIG.

FIG. 5 is a front view of only the cold air discharge prevention device of the present invention.

FIG. 6A shows a split urethane pad attached to a pad support rod. (b) is a single product drawing.

7 (a) is a balance shaft, FIG. 7 (b) is an enlarged view of a pad support rod, and FIG. 7 (c) is a sectional view of an end structure of the pad support rod.

8A is a perspective view of a damper, and FIG. 8B is a side view of a bracket.

[Explanation of symbols]

1 shelter 2 platform
3 Airbag 4 Split urethane pad 5 Pad support rod 5a Plug 5b Short pipe 6 Pivot bracket 7 Footboard 8 Magnet 8a Metal fitting 9 Suspended chain 10 Balance shaft 11 Wire 12 Pulley 13 Level controller 14 Guide device 15 Brackets 15a, 15b Flange 16 Vertical axis 17 Short tube 17a Lateral projection R Refrigerator

Claims (4)

[Claims] 1. A plurality of split urethane pads (4) supported on a pad support rod (5) so as to be capable of swinging back and forth, and the support rod.
A pair of left and right suspension chains (9) mounted on both sides of (5)
A balance shaft (10) for supporting the upper part of the pair of suspension chains (9), and one end attached to an intermediate position of the balance shaft (10) and the other end connected to the level controller (13). Wires (11) supported by upper sheaves (12)
And guide devices provided at both ends of the balance shaft (10)
A cool air discharge prevention device at the time of cargo handling work in a shelter of a large-scale frozen warehouse, which comprises lock devices for fixing the adjusted height position provided on both ends of (14) and the pad support rod (5). 2. The footboard (7) according to claim 1, further comprising a footboard (7) in front of the split-type urethane pad (4) and having an upper end of a hanging chain (7a) supported by the pad support rod (5). Cold air discharge prevention device during cargo handling work in shelters of large frozen warehouses. 3. The cold air discharge prevention device at the time of cargo handling work in the shelter of a large refrigerated warehouse according to claim 1 or 2, wherein the split type urethane pad (4) has an inverted trapezoidal shape. 4. A cargo handling operation in a shelter for a large-scale frozen warehouse according to claim 1, 2 or 3, wherein the pad support rod (5) is hollow and sand is filled between stoppers (5a) inserted at both ends. Cold air discharge prevention device.