JPS6241948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In the past, it has been common to suspend meat from rails attached by permanent hangers to the roof structure of the body of a refrigerated vehicle. The hangers protruded into the freezer compartment and took up considerable space near the ceiling of the freezer compartment, but were not useful for storing many items that did not need to be suspended from the roof. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a suspension structure that allows the suspension to be easily inserted into or removed from the inside of a freezer compartment without interfering with the insulation of the freezer compartment. .

The invention achieves the above objects by using a special roof reinforcing beam member having a wall arrangement forming a hollow longitudinally extending interior chamber that is accessible only through a slot in the bottom flange of the beam. It is something. The flange has a shoulder on the inside of the longitudinal chamber which engages and supports a transverse arm on a hanger projecting into the freezer chamber. The sling arm is inserted through said slot and can then be rotated 90° so that the arm rests on said shoulder and suspends the sling and the article supported thereby from the beam. Can be done. When you want to use the freezer to full capacity, that is, from floor to ceiling,
The sling is lifted from the beam shoulder, rotated 90 degrees, and removed downwardly through the slot in the flange.

The invention will now be explained with reference to the drawings.

A vehicle 1 in the form of a highway truck 3 comprises a trailer 5 comprising a body 7 containing a freezer compartment 9 kept at a low temperature by a conventional refrigeration system (not shown). The body 7 has a thermally insulating roof structure 9 as well as thermally insulating side walls 11 and a floor 13. According to the invention, the roof structure 9 comprises a series of horizontal reinforcing beams 15, which are connected to the trailer 5
It extends at right angles to its length and has a special shape as shown in FIGS. 2 and 3.

Each of the beams 15 is generally I-beam shaped;
It can be easily made from metal by extrusion. Beam 15 has a vertical web 17 and an upper horizontal I-beam flange 19. However, the bottom part of the beam 15 is formed in a special way according to the invention. The web 17 thus terminates at the upper end of a pair of laterally extending walls 21 which slope outwardly to merge with generally vertically extending wall portions 23. Wall portion 23 terminates at the top of bottom I-beam flange 25.
Bottom flange 25 has a longitudinal slot 27 which preferably extends the entire length of beam 15. Except for the end indicated by 29,
The slot 27 is connected to the wall portions 21 and 23 as well as the wall portion 2.
The only means of access to chamber 31 is formed by a shoulder portion 33 of bottom flange 25 extending inwardly from 3 and terminating at and defining the edge of slot 27. Flange portion 33 is thickest adjacent slot 27 and tapers outwardly to form an inwardly facing shoulder toward wall portion 21.

The slot 27 of each beam 15 is adapted to receive the end 35 of each of a plurality of hangers 37. The upper end 35 of each hanger includes a cylindrical handle 39 having a slightly larger diameter than the normal width of the slot 27, but centered on the centerline of the slot and drilled into the bottom flange portion 33. The diameter is smaller than that of the series of holes or enlargements 41 that are present. At the upper end of the hanger handle 39 are a pair of arms 43 extending in opposite directions from the centerline of the hanger 37 and having a width slightly less than the width of the slot 27.

The hanger 37 can be mounted on the beam 15 by holding the hanger so that the arm 43 is aligned and parallel to the slot 27 and the handle 39 is aligned perpendicular to the hole 41. . In this condition, the hanger 37 is moved upwardly until the arm 43 is located inside the chamber 31, and then the arm 43 can ride on and sit on the flange portion 33 as shown in FIG. Rotated 90° to position. arm 4
Preferably, the bottom surface of 3 is sloped by the same angle as the shoulders 33 (these shoulders have an angle of slope of less than 180°). This sloped alignment surface of the arm and flange portions tends to draw the bottom flange portions 33 together when a downward load is applied to the hanger, and tends to resist movement of the hanger to disengage it.
For the purpose of receiving loads, the hanging device has a plate-like bottom portion 45.
, which is provided with an aperture 47 for receiving a fastener so that the load is supported by the hanger.

a spring device 49 for applying an appropriate downward preload to the connection between the hanger arm 43 and the flange shoulder 33 to prevent the hanger from inadvertently rotating and falling off the beam 15 due to vibration or otherwise; It is preferable to use In FIG. 3, spring device 49
is a rubber dish-shaped elastic grommet (grommet) 5
1, which engages the inner surface of the ceiling skin 59 around the hole 100 (see FIG. 3) when the outer edge 55 and grommet are compressed, as shown in FIG. inner annular shoulder 57 (sixth
(see figure). Grommet collar 61 receives handle 39. The hanger 37 has a flange 62 with a conical upper shoulder that engages the bottom of the grommet 51 to facilitate compression.
Equipped with

7 and 8 show another spring device 49' in the form of a dish-shaped metal spring washer 63 with a flange 64 that engages the ceiling skin 59. The hanger 37' has a flange 62' with a flat upper shoulder pressed against the bottom surface of the washer 63. The washer 63 is compressed by the hanging tool 37'.
This must be done before making a 1/4 turn and resting on shoulder 33. The height of the washer is as follows.
That is, the height of the washer is selected so that compression is maintained even after the arm 43' is seated on the shoulder and held tightly in place. Washer 63 has a central opening 65 through which hanger handle 39' extends. The handle 39 corresponds to the inner diameter of the grommet collar 61. Apertures 65 and 61' are provided in the arms 43 so that they can be slid onto the hanger handles prior to mounting the hanger on the beam 15.
can be placed on top.

FIG. 7 also shows in phantom a typical meat rail support strap 67, which is secured by a fastener 69 extending through the hole 47' in the hanger 37' to apply a gravity load to the hanger. connected. Member 67 is shown so that the load is connected to only one hanger or to a series of hangers, but this is relevant to the internal suspension system desired for use within chamber 9.

2 and 3 illustrate one way in which beam 15 may be assembled to roof structure 9. FIG.
In this arrangement, the roof structure includes close-fitting longitudinal inner and outer load-bearing upper rails 71 and 73 that are bolted or riveted to each other. Roof outer panel 75
are secured to outwardly extending horizontal flanges 79 and 81 on the rail at various points 77. The bottom of the outer rail 73 is formed with inner and outer legs that interact with the sidewall skin to form the sidewall 11. The outer sidewall skin 83 is secured to the outer leg 87 at various points 85 and the inner sidewall skin 88 is secured to the inner leg 91 at various points. The space between the two outer panels is filled with thermal insulation material 93. The upper inner rail 71 has vertically regularly spaced locations 95 ( (See Figure 3)
It is divided by. Beam flange 19 is firmly fixed to rail flange 97 by fasteners 99. The gravity loads on the beams are thus transferred to the upper rails 71,73. At the same time, beam 1
5 are superimposed rails 71, 7 on both sides of the trailer.
3, the beams 15 together with the side walls 11 provide lateral reinforcement for the roof structure. The ceiling outer panel 59 is beam 1
5 at various points (not shown) and may be rigidly fixed to these flanges if desired, thus serving as a load-bearing member of the roof structure. . Outer panel 5
Hole 100 of 9 is aligned with hole 41 in the beam flange, but is closed by grommet 49 or washer 49'.

As shown in FIG.
5a is formed at an angle of approximately 60° with respect to the horizontal such that the bottom flange 25 is shorter in length than the top flange 19. Each end 29 of each beam chamber 31 is closed by covering it with adhesive paper as shown at 101. Thus, the chamber 31 has (top and bottom) ceiling skins 59 and roof skins 7.
5 and the space between the (opposing) foam weir 103 and top rail 71 combination. This roof space can therefore be accessed from the inside or outside of the trailer 5 and from the beam room 31.
completely sealed from It is therefore possible to form the insulation material 105 in-situ by means of a foaming process, thereby filling the empty roof space surrounding the beam 15. The sloping end 15a of the beam adjacent to the form weir 103 is filled with insulation to insulate the beam from the weir, and the insulation pad 107 between the beam 15 and flange 97 minimizes heat transfer at these connections and 103 and the insulation 109 between skin 88 and rail legs 91 further minimizes heat transfer losses. As already mentioned,
The inner chamber 31 of the beam 15 is sealed at the ends with tape 101 and with the hole 41 containing the hanger by means of a washer device 49 or 49'. The remaining holes 41 are connected to chamber 31 by chamber 9 .

The invention is thus characterized by special reinforcing beams 15 extending across the chamber 9 and supporting arms of a plurality of hoists 37 which serve individually or collectively to suspend loads 67 from the roof structure. A roof suspension system is provided with a chamber forming device at the bottom end of the beam receiving 43. When used for suspending heavy meat bodies that normally have a tendency to sway, the slanted arms 4
3 tends to provide stability, and it will be seen that by engagement with handle 39, the edge of hole 41 prevents the hanger from sliding along the length of slot 27.

Note that the present invention can be modified in various ways without departing from its spirit and gist.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a truck equipped with a refrigerated trailer having a sling structure according to the present invention. FIG. 2 is an enlarged partially cutaway cross-sectional view taken along line 2--2 in FIG. FIG. 3 is a cross-sectional view taken along line 3--3 of FIG. 2, but with the sidewalls removed. FIG. 4 is a cross-sectional view taken along line 4--4 in FIG. FIG. 5 is a view similar to FIG. 4, but showing the state of the beam when the hanger is removed. FIG. 6 is an enlarged cross-sectional view of the elastic grommet shown in the compressed state in FIG. 3 and shown in its uncompressed state. FIG. 7 is a suspension diagram similar to that shown in FIG. 2, but showing the use of metal spring washers in place of the grommets of FIG. FIG. 8 is a cross-sectional view taken along line 8--8 of FIG. DESCRIPTION OF SYMBOLS 1... Vehicle, 2... Truck, 3... Trailer, 7... Body, 9... Roof structure, 11... Side wall, 13... Floor, 15... Reinforcement beam, 17...
Web, 19...flange, 21...wall, 23...
... Wall part, 25 ... Flange, 27 ... Slot, 29 ... End, 31 ... Chamber, 33 ... Shoulder part, 35 ... Upper end, 37, 37' ... Hanging tool, 3
9...Handle, 41...Hole, 43, 43'...Arm, 4
5... Bottom, 47, 47'... Hole, 49, 49'...
... Spring device, 51 ... Grommet, 53 ... Skirt portion, 55 ... Outer edge portion, 57 ... Annular shoulder, 59
...Ceiling panel, 61...Color, 62, 62'...
... Flange, 63 ... Spring washer, 64 ... Flange, 65 ... Center opening, 67 ... Flesh rail support band, 69 ... Fastener, 71, 73 ... Upper rail, 75 ... Roof outer plate, 77... point, 79,81
...Flange, 85...Point, 87...Leg, 88...
...Side wall skin, 89...Point, 91...Legs, 93...
Heat insulation material, 97... flange, 99... fastening tool,
100... Hole, 101... Adhesive paper, 103... Weir, 105... Insulating material, 107... Insulating pad,
109...Insulating material.

Claims (1)

Claims: 1. A roof structure for a vehicle having a freezing compartment for storing articles to be transported, comprising a plurality of long beams with horizontal bottom flanges, each of which extends through the each of said beams has a pair of horizontally separated side walls that interact with a bottom flange to extend said slots, said slots extending parallel to the length of said beams; forming an elongated chamber accessible through the beam, each of said bottom flanges having an upper surface inside said elongated chamber of said beam to form a pair of elongated hanger support shoulders separated by said slot; wherein the ceiling layer of the freezer compartment is supported at the bottom of said bottom flange and is provided with said slot and a hanger receiving opening for providing hanger access to the chamber. Structure. 2. A sling having a bottom part connected to a load suspended in said freezing chamber and an upper part adapted to be fitted into said elongated chamber and supported by said sling support shoulder on said support shoulder. 2. A structure according to claim 1, comprising: 3 said upper part has aligned transverse horizontal arms having a width narrower than said slot and having a joining length greater than said slot but less than said chamber, said arm being aligned with said slot; in such a position that the arm can be vertically inserted into or removed from said chamber, and when said arm is in said chamber, it can be aligned with said shoulder by rotating one quarter of a turn from said position. 3. A structure according to claim 2, adapted to be supported by a shoulder. 4. The hanger has a handle extending between the arms and the base, the handle being wider than the slot, and the bottom flange being aligned with the opening. 4. A structure as claimed in claim 3, having an aperture wider than the slot, the aperture being centered approximately at the center of the slot. 5. Said support shoulder is sloped downwardly away from said slot to form an angle of less than 180°, and said sling arm has a bottom surface engaging said support shoulder, said bottom surface being in contact with said support shoulder. 5. A structure according to claim 4, wherein the structure is inclined downwardly in a direction away from the handle of the holder to form substantially said corner. 6 said support shoulder slopes downwardly away from said slot forming an angle of less than 180°, said sling arm having a bottom surface engaging said support shoulder; 4. A structure according to claim 3, wherein the structure is slanted downwardly in a direction away from the handle of the holder to form substantially said corner. 7. Claim 3, further comprising a spring device providing a downwardly preloaded elasticity on the sling for bendably holding said arm pressed against said supporting shoulder. The structure described. 8. Said hanger has an upwardly facing shoulder spaced below said ceiling layer when said hanger arm is mounted on said support shoulder, said spring device 8. A structure according to claim 7, adapted to be compressed between the hanger shoulder and the ceiling layer. 9. The structure according to claim 8, wherein said hanger has a handle portion extending between said arms and a bottom portion, and said spring device comprises an annular elastic member surrounding said handle portion. 10. The structure according to claim 9, wherein the elastic member has a closed annular dish shape having a diameter larger than the ceiling opening. 11 Said elastic member consists of an elastic rubber-like grommet, said grommet having an annular radial separation which engages said ceiling layer when said grommet is axially compressed between said ceiling layer and a hanger shoulder. 11. A structure according to claim 10 having rounded shoulders. 12. The structure of claim 11, wherein said sling shoulder engaging said grommet has a conical shape. 13. The structure according to claim 10, wherein the elastic member comprises a metal washer, and the hanger shoulder comprises an annular flange. 14. The roof structure has a roof layer spaced vertically above the ceiling layer, closure devices at each end of the long beam chamber, and in-situ formed thermal insulation; The two layers of are adapted to form a thermally insulating space containing the beam, and the insulating material is adapted to substantially fill the space except for the long beam chamber. The structure according to item 1 of the scope. 15 A long beam extends transversely to the length of the vehicle and the freezer compartment, and the roof structure has an upper rail extending longitudinally on the longitudinally opposite side of the vehicle with a horizontal flange; Claims wherein the end of the beam adjacent the rail is angled such that the top flange of the beam is substantially longer than the bottom flange of the beam, with a top flange fastened to the flange. The structure according to scope 14. 16. The structure of claim 15, wherein said roof structure comprises a longitudinally extending insulating material weir positioned in horizontal alignment with the ends of said beams. 17. The structure of claim 16, wherein the upper flange of said beam is spaced substantially below said roof layer.