WO2008018360A1

WO2008018360A1 - Trailer and refrigeration machine for trailer

Info

Publication number: WO2008018360A1
Application number: PCT/JP2007/065169
Authority: WO
Inventors: Shigeichi Kitano; Keisuke Kudou
Original assignee: Daikin Industries, Ltd.
Priority date: 2006-08-08
Filing date: 2007-08-02
Publication date: 2008-02-14
Also published as: JP2008037319A

Abstract

A support member (80) is provided on a trailer body (21). The support member (80) is projected forward from a lower end section of a front end surface of the trailer body (21). A refrigeration machine (30) for a trailer is fixed to the trailer body (21), mounted on the support member (80). Because the refrigeration machine (30) is supported from below by the support member (80), strength required for the structure of the refrigeration machine (30) is reduced, which reduces the weight of the refrigeration machine (30).

Description

Specification

Trailer and trailer refrigerator

Technical field

[0001] The present invention relates to a trailer for transporting cargo while maintaining a low temperature with a refrigerator, and to a refrigerator used for the trailer.

Background art

[0002] Conventionally, refrigerated vehicles for transporting cargo such as frozen food on land while keeping the temperature low have been known. The refrigerator vehicle is provided with a vehicle refrigerator as disclosed in Patent Document 1, for example. This refrigerator includes a sub-engine different from the traveling engine of the refrigerator and an electric compressor driven by the sub-engine. As one type of refrigeration vehicle, a refrigeration trailer on which cargo is loaded and a tractor that pulls the trailer are known.

Patent Document 1: JP 05-038933 A

Disclosure of the invention

Problems to be solved by the invention

As shown in FIG. 12, a conventional refrigeration trailer (500) includes a trailer body (510) and a trailer refrigerator (520). The trailer body (510) includes a loading platform (511) that forms a cargo compartment for receiving cargo. On the lower surface of the loading platform (511), a cart (512) with wheels is provided near the rear end, and a king pin (513) that engages with the force bra of the tractor is provided near the front end. As shown in FIG. 13, a bottom plate member (514) for attaching a kingpin (513) is provided at the bottom of the loading platform (511). The bottom plate member (514) extends rearward from the front end surface of the loading platform (511), and a king pin (513) projects downward from the vicinity of the rear end.

[0004] Trailer refrigerator (520) is attached to the front surface of cargo bed portion (511) of trailer body (510) and cools the air in the cargo compartment formed by cargo bed portion (511). Specifically, the loading platform (511) is provided with a frame-shaped member (515) along its front end surface. The trailer refrigerator (520) is bolted to the frame member (515)! [0005] In other words, in the conventional refrigeration trailer (500), the trailer refrigerator (520) has a weight of about 800 kg, but only with bolts that are fastened to the trailer body (510). Supported! While the refrigeration trailer (500) is running, vibration is also applied to the trailer refrigeration machine (520), so when fixing the trailer refrigeration machine (520) to the trailer body (510), a number of fairly thick bolts are used. It is necessary to use it. Also, since the frame-like member (515) extending from the lower surface to the upper surface of the trailer body (510) supports the trailer refrigerator (520) via the bolt, the frame-like member (515) is a thick member. It is necessary to make a sturdy structure using Furthermore, in the trailer refrigerator (520), the weight of the equipment installed in the lower part also affects the upper structure. Therefore, the trailer refrigerator (520) as a whole must be constructed to be quite sturdy. Not.

[0006] For this reason, in the conventional refrigeration trailer (500), the weight of the trailer refrigerator (520) and the frame-shaped member (515) for attaching the trailer main body (510) increases. There was a problem that the amount of cargo that could be loaded on the trailer was reduced accordingly.

[0007] The present invention has been made in view of the force and the point, and an object thereof is to reduce the weight of a trailer refrigerator and a trailer including the same.

Means for solving the problem

[0008] A first invention includes a trailer body (21) that forms a cargo compartment (24) for accommodating cargo, and a refrigeration unit that is attached to the trailer body (21) and cools the cargo compartment (24). The trailer is equipped with a machine (30) and is towed by a tractor (11). And a support member (80) formed integrally with the trailer body (21) and protruding forward from the front end surface of the trailer body (21). The refrigerator is provided on the support member (80). (30) is placed.

[0009] In the first invention, the refrigerator (30) is attached to the trailer body (21). The refrigerator (30) sucks air from the cargo compartment (24) formed in the trailer body (21), cools the sucked air, and sends it back to the cargo compartment (24). The trailer body (21) is provided with a support member (80). The support member (80) protrudes from the front end surface of the trailer body (21), and the refrigerator (30) is placed thereon. That is, the refrigerator (30) is attached to the trailer body (21) while being supported by the support member (80).

[0010] In a second aspect based on the first aspect, the bottom of the trailer body (21) A bottom structural member (27) that extends from the front end to the rear end side of the trailer body (21) and to which a king pin (26) for connecting the trailer body (21) to the tractor (11) is attached. The support member (80) is formed integrally with the bottom structural member (27) and extends forward from the front end of the bottom structural member (27).

[0011] In the second invention, the support member (80) is formed integrally with the bottom structure member (27) of the trailer body (21). The bottom structural member (27) is a high-strength member for supporting a load acting on the kingpin (26), and has conventionally been provided on the trailer body (21). The refrigerator (30) is supported by the bottom structural member (27) via the support member (80).

[0012] In a third aspect based on the first aspect or the second aspect, the support member (80) has a shape in which left and right corners on the front end side are notched.

[0013] In the third invention, the support member (80) has a shape in which left and right corners on the front end side thereof (that is, the tractor (11) side that pulls the trailer (20)) are notched. Yes. For this reason, even when the trailer (20) and the tractor (11) are bent about the king pin (26), a certain distance is secured between the tractor (11) of the support member (80).

[0014] A fourth invention is the trailer body (21) according to the first or second invention, wherein the refrigerator (30) has a rear surface abutting against a front end surface of the trailer body (21). On the other hand, when the refrigerator (30) is attached to the trailer body (21), the refrigerator (30) is guided to a predetermined position so that the relative position in the left-right direction is appropriate. Guide means (85) are provided.

[0015] In the fourth invention, the trailer (20) is provided with guide means (85). The guide means (85) may be a member attached to the trailer body (21) or a member attached to the refrigerator (30). When attaching the refrigerator (30) to the trailer body (21), it is necessary to match the relative positions of the two. Since the refrigerator (30) is mounted on the support member (80), the relative position between the refrigerator (30) and the trailer body (21) in the vertical direction is determined automatically. Further, since the back surface of the refrigerator (30) contacts the front end surface of the trailer body (21), the relative position between the refrigerator (30) and the trailer body (21) in the front-rear direction is also determined naturally. When the refrigerator (30) is attached to the trailer body (21), the refrigerator (30) is guided to a predetermined position by the guide means (85), and the refrigerator (30) and the trailer body (21) in the left-right direction are guided. Relative Alignment is performed.

[0016] The fifth aspect of the present invention is attached to the trailer body (21) of the trailer (20) that is pulled by the tractor (11) and accommodates the cargo formed by the trailer body (21). This is intended for trailer refrigerators that cool the cargo compartment (24). The trailer body (21) is formed integrally with the trailer body (21) so as to be mounted on the support member (80) protruding from the front surface and fixed to the support member (80). It is what is done.

[0017] In the fifth invention, the refrigerator (30) is placed on the support member (80) of the force S trailer body (21). That is, the refrigerator (30) is attached to the trailer body (21) while being supported by the support member (80). The refrigerator (30) attached to the trailer body (21) sucks and sucks air from the cargo compartment (24), sucks it, cools it, and sends it back to the cargo compartment (24).

[0018] A sixth invention is the above-mentioned fifth invention, wherein the refrigerant circuit (40) for performing the refrigeration cycle by circulating the refrigerant, and the compressor (41) for driving the refrigerant circuit (40) are driven. An engine (50), a refrigerant circuit (40), and a frame body (60) for mounting the engine (50). The frame body (60) is a support member for the trailer body (21). (80) and is configured to be fixed to the support member (80).

[0019] In the sixth invention, the frame body (60) to which the refrigerant circuit (40) and the engine (50) are attached is fastened to the support member (80). That is, the components of the refrigerator (30) such as the refrigerant circuit (40) are supported by the support member (80) via the frame body (60).

[0020] In a seventh aspect based on the sixth aspect, the frame body (60) includes the engine (50) and the compressor (41) of the refrigerant circuit (40) attached to the trailer. A lower structure (61) fastened to the support member (80) of the main body (21) and an evaporator of the refrigerant circuit (40) are attached to the upper side of the lower structure (61). The upper structure part (67) provided is provided.

In the seventh invention, the frame body (60) is provided with the lower structure portion (61) and the upper structure portion (67). At least the engine (50) and the compressor (41) of the refrigerant circuit (40) are attached to the lower structure portion (61). On the other hand, at least the evaporator of the refrigerant circuit (40) is attached to the upper structure portion (67). That is, among the components of the refrigerator (30), relatively heavy ones are attached to the lower structure portion (61), and relatively light ones are attached to the upper structure portion (67). Fure The frame body (60) has its lower structure (61) fastened to the support member (80) of the trailer body (21).

[0022] In an eighth aspect based on the seventh aspect, the lower structure (61) has a framework structure in which rod-like members are combined, and the upper structure (67) It has a flat plate shape extending upward from the back surface of the side structure portion (61).

[0023] In the eighth invention, the lower structure portion (61) to which relatively heavy parts are attached has a heavy but sturdy framework structure. On the other hand, the upper structure (67) to which relatively light components are attached is formed in a flat plate shape that is not so strong but lightweight.

The invention's effect

In the present invention, the refrigerator (30) is placed on the support member (80) of the trailer body (21), and the refrigerator (30) is supported from below by the support member (80). For this reason, the structural member arranged at the upper part of the refrigerator (30) does not need to support the weight of the equipment installed at the lower part of the refrigerator (30) as in the prior art, and the structural member at the upper part of the refrigerator (30). Only the weight of the installed equipment needs to be supported. Therefore, the strength required for the structural member of the refrigerator (30) is reduced, and the weight of the refrigerator (30) can be reduced accordingly. In addition, the trailer body (2 1) can be reduced in weight by eliminating the need for a strong member for supporting the refrigerator (30) over the lower end of the front end surface and the upper end as in the conventional case. Become.

Thus, according to the present invention, the weight of the refrigerator (30) and the trailer body (21) to which the refrigerator (30) is attached can be reduced. As a result, the amount of cargo that can be loaded on the trailer body (21) can be increased, and the loading capacity of the trailer (20) can be improved. Further, by reducing the weight of the refrigerator (30) and the trailer body (21), the manufacturing cost of the refrigerator (30) and the trailer body (21) can be kept low.

[0026] In the second aspect of the invention, the support member (80) is formed integrally with the bottom structural member (27) conventionally provided on the trailer body (21), and the bottom structural member (27) is used. And supports the refrigerator (30). That is, the bottom structure member (27) provided on the trailer body (21) has been conventionally used as a member for supporting the refrigerator (30). Therefore, according to the present invention, the member installed in the trailer body (21) for mounting the refrigerator (30) can be reduced in size, and the weight of the trailer body (21) resulting from the installation of the support member (80) can be reduced. By minimizing the increase wear.

[0027] In the third aspect of the present invention, the left and right corners on the front end side of the support member (80) are notched so that the distance between the support member (80) and the tractor (11) pulling the trailer (20) is increased. keeping. Therefore, according to the present invention, the force S can be brought close to the front end surface of the trailer (20) and the tractor (11) without hindering the travel of the trailer (20). Use force S to ensure the maximum size of the cargo compartment (24).

[0028] In the fourth aspect of the invention, by providing the trailer (20) with the guide means (85), the relative position between the refrigerator (30) and the trailer body (21) in all of the vertical direction, the front-rear direction, and the left-right direction. Can be easily aligned. Therefore, according to this invention, the man-hour required for the operation | work which attaches a refrigerator (30) to a trailer main body (21) can be reduced.

[0029] In the seventh aspect of the invention, the components of the refrigerator (30) are relatively heavy!

A relatively lighter one of them is attached to the upper structure part (67), and the lower structure part (61) of the frame body (60) is fixed to the support member (80). For this reason, in the frame body (60), the lower structure portion (61) is required to have a certain degree of strength, but the upper structure portion (67) is not required to have such a high strength. Therefore, according to the present invention, the strength of the upper structure portion (67) of the frame body (60) can be lowered, and the refrigerator (30) can be further reduced in weight.

Brief Description of Drawings

FIG. 1 is a schematic side view of a refrigeration vehicle according to an embodiment.

FIG. 2 is a schematic side view showing the vicinity of the front end of the trailer of the embodiment.

FIG. 3 is a schematic bottom view showing the vicinity of the front end of the trailer of the embodiment.

FIG. 4 is a schematic perspective view showing the vicinity of the front end of the trailer of the embodiment.

FIG. 5 is a schematic exploded perspective view showing the vicinity of the front end of the trailer according to the embodiment.

FIG. 6 is a schematic perspective view showing a support member of the trailer of the embodiment.

FIG. 7 is a perspective view showing the trailer refrigerator of the embodiment with a part thereof omitted.

FIG. 8 is a left side view showing the trailer refrigerator of the embodiment with a part omitted.

FIG. 9 is a schematic perspective view of a frame body according to the embodiment.

FIG. 10 is a schematic exploded view showing the vicinity of the front end of the trailer in Modification 1 of the embodiment. It is a perspective view.

[FIG. 11] FIG. 11 is an enlarged cross-sectional view showing the main part of the trailer in Modification 2 of the embodiment. [FIG. 11] FIG. 12 is a schematic side view showing a conventional trailer.

13] FIG. 13 is a schematic side view showing the vicinity of the front end of a conventional trailer.

Explanation of symbols

[0031] 11 卜

21 Trailer body

24 cargo compartment

26 Kingpin

27 Bottom plate member (Bottom structure member)

30 refrigerator

40 Refrigerant circuit

41 compressor

50 engine

60 frames

61 Lower structure

67 Upper structure

80 Support member

85 Guide piece (guide means)

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0033] As shown in FIG. 1, the trailer (20) of the present embodiment includes a trailer refrigerator (30), and is used to transport frozen foods, fresh foods, and the like on land. This trailer (20) is combined with a tractor (11) that pulls the trailer (20) to form a refrigeration vehicle (10).

[0034] The trailer (20) includes a trailer body (21) and a trailer refrigerator (30). As shown in FIGS. 2 and 4, the trailer refrigerator (30) is disposed along the front end surface of the trailer body (21) (ie, the surface on the tractor (11) side). [0035] Configuration of trailer body

The trailer body (21) is formed in a box shape to form a cargo compartment (24), a carriage portion (23) that supports the rear end of the cargo bed portion (23) from below, and a tractor (11 ) And a king pin (26) that engages with a force bra provided on the head. The king pin (26) protrudes downward from near the front end of the lower surface of the loading platform (23). A bottom plate member (27), which is a bottom structural member, is embedded in the bottom of the loading platform (23). The bottom plate member (27) is a relatively thick plate material and extends rearward from the front end surface of the loading platform (23). As shown in FIG. 3, the bottom plate member (27) has a shape in which the central portion on the rear end side thereof bulges backward, and a king pin (26) projects from the bulged portion. Yes.

[0036] The panels forming the front and rear end surfaces, the left and right side surfaces, the bottom surface, and the top surface of the loading platform (23) are all heat insulating walls (33) made of a highly heat insulating member. As shown in FIG. 5, an opening (22) penetrating the panel constituting the front end surface is formed on the front end surface of the loading platform (23). The opening (22) is formed in a horizontally long rectangular shape, and is disposed at the upper part of the front end surface of the loading platform (23).

[0037] The trailer body (21) is provided with a support member (80) for mounting the trailer refrigerator (30). As shown in FIG. 5, the support member (80) is provided so as to protrude forward from the lower end portion of the front end surface of the loading platform (23). The support member (80) has a circular arc shape at the front edge when viewed from above. That is, the support member (80) has a shape in which both end portions in the left-right direction are recessed backward from the center portion, that is, a shape in which corner portions in the left-right direction on the front end side are notched.

[0038] As shown in Figs. 2 and 6, the support member (80) includes a base plate portion (81) disposed at the bottom, and six strut portions extending upward from the base plate portion (81) force. 82), a top plate portion (83) that can be placed on the column portion (82), and a cover portion (84) that covers the front side of the base plate portion (81) and the top plate portion (83)! / RU In FIG. 6, the cover (84) is not shown. The substrate portion (81) is formed integrally with the bottom plate member (27) of the trailer body (21), and extends forward from the front end of the bottom plate member (27). The six support columns (82) are arranged at approximately equal intervals along the periphery of the bottom plate member (27). In addition, the number of the support | pillar part (82) shown here is a mere illustration. The top plate portion (83) is formed in substantially the same shape as the substrate portion (81) and is placed on the support column portion (82). Hippopotamus The part (84) is provided so as to cover the front side of the substrate part (81), the column part (82), and the top plate part (83).

[0039] Configuration of trailer refrigerator

As shown in FIGS. 7 and 8, the refrigerator (30) includes a refrigerator main body (31). The refrigerator main body (31) includes a refrigerant circuit (40), and also includes a power generation engine (50) and a power generator (51). The refrigerator main body (31) includes a frame body (60) for mounting components such as a refrigerant circuit (40), a power generation engine (50), and a power generator (51). The refrigerant circuit (40) includes a compressor (41), a condenser (42), an expansion mechanism (not shown), and an evaporator (43), and is configured to perform a vapor compression refrigeration cycle.

[0040] The refrigerator main body (31) includes a casing (32) attached to the frame body (60), and has a front surface.

(A surface on the tractor (11) side) is formed in an arc shape. That is, the refrigerator main body (31) is formed in an arc shape in plan view as a whole. In the upper half of the casing (32), there is an outside suction port (35) for taking in outside air!

[0041] As shown in FIG. 9, the frame body (60) of the refrigerator main body (31) includes a lower structure portion (61) formed in a frame shape and an upper structure portion formed in a flat plate shape. (67).

[0042] The lower structure portion (61) includes one lower frame (63) and one middle frame (64), and four vertical frames (62). The number of vertical frames (62) is merely an example. The vertical frame (62) is erected near the back surface of the lower frame (63). The middle frame (64) is disposed on the upright vertical frame (62). A step-down portion (66) is formed on one side of the middle frame (64). The lower frame (63) of the frame body (60) is fastened to the support member (80) of the trailer body (21) with bolts.

[0043] A space between the lower frame (63) and the middle frame (64) is mainly configured in a machine room (65), and an engine (50) for power generation and a generator connected to the engine (50) ( 51), a battery (52), and an operation panel (53) are accommodated. The lower frame (63) is made up of high-strength members and members to support heavy objects such as the engine (50)! A compressor (41), a condenser (42), and an electrical component box (54) that stores various electrical components are attached to the middle frame (64). The compressor (41) is installed in the step-down portion (66) of the middle frame (64). The upper structure portion (67) includes two columnar frames (68) and one panel member (69). One columnar frame (68) is erected at the left end and the right end of the middle frame (64). The panel member (69) is a flat plate-like member extending upward from the rear edge of the middle frame (64), and is formed from one of the two columnar frames (68) to the other. In addition, an opening (6a) is formed at the center of the panel member (69).

The refrigerator main body (31) is formed with a condensing side passage (70) and an evaporation side passage (71). The condensation side passage (70) is a passage through which air to exchange heat with the condenser (42) flows. An outer suction port (35) is formed in the casing (32) in front of the condenser (42). A warehouse outer outlet (36) is formed on the upper surface of the casing (32). The condensing side passageway (70) is formed so as to be bent upward from the outside suction port (35) inside the refrigerator main body (31) to reach the outside air outlet (36).

[0046] The condenser side passage (70) is provided with a condenser (42), an electrical component box (54), three condenser fans (44), and a radiator (55) of the engine (50). Has been. The radiator (55) is disposed facing the outside air outlet (36), which is the downstream end of the condensing side passage (70). In particular, the condenser (42), the electrical component box (54), the condenser fan (44), and the radiator (55) are arranged in series from the upstream side to the downstream side of the air in the condensation side passage (70). Is arranged.

[0047] The evaporation side passage (71) is a passage through which air to exchange heat with the evaporator (43) flows, and the air outlet (7a) on the upper rear surface of the refrigerator main body (31) from the intake dust (72). It is formed over. An evaporator (43) and two evaporator fans (45) are arranged in the evaporation side passage (71).

[0048] The suction duct (72) extends from the refrigerator main body (31) through the opening (22) of the trailer main body (21) into the cargo compartment (24), and is disposed on the front end side of the cargo compartment (24). It is configured to suck the air in the cargo compartment (24) from below. The suction duct (72) is insulated from the machine room (65) such as the engine (50) by a heat insulating wall (33).

[0049] An evaporator (43) is disposed at the upper end of the suction duct (72). The evaporation side passage (71) is configured to blow cooling air into the cargo compartment (24) from the outlet (7a) at the upper back of the refrigerator main body (31). The evaporator (43) is attached to the panel member (69) of the frame body (60) together with the suction duct (72).

[0050] Specifically, the evaporation side passageway (71) extends upward from the lower back side along the suction duct (72). The refrigerator body (31) bends from the center of the back to the front side, and then bends upward and bends to the back side at the top of the refrigerator body (31). The evaporator (43) is disposed in a substantially horizontal passage portion at the center of the evaporation side passage (71). The evaporator fan (45) is arranged in the horizontal passage part at the top of the evaporation side passage (71).

[0051] A partition plate (73) for partitioning the condensation side passage (70) and the evaporation side passage (71) is provided in the upper part of the refrigerator main body (31). The partition plate (73) is disposed on the upper part of the refrigerator main body (31). The partition plate (73) is made of a heat insulating member, and is formed from the front side of the evaporator (43) to the evaporator fan (45) and the condenser fan (44).

[0052] The partition plate (73) is formed in a three-dimensional shape corresponding to the air flow of the evaporator (43) and the condenser (42). Specifically, the partition plate (73) has a fan housing portion alternately arranged in the width direction so that two evaporator fans (45) and three condenser fans (44) are alternately arranged in the width direction. It is formed in an uneven shape. The evaporator fan (45) is disposed backward with the rotation axis being horizontal, and the condenser fan (44) is disposed upward with the rotation axis being vertical.

[0053] The refrigerator main body (31) is provided with an exhaust pipe (56). The exhaust pipe (56) is provided from the engine (50) to the upper part of the refrigerator main body (31). A muffler (57) is installed in the middle of the exhaust pipe (56). The exhaust pipe (56) is configured to discharge the exhaust of the engine (50) above the refrigerator main body (31). Further, although not shown, a heat exhaust passage is provided along the exhaust pipe (56). The exhaust heat passage is provided from the engine (50) to the upper part of the refrigerator main body (31). This exhaust heat passage is configured to exhaust the exhaust heat of the engine (50) and the generator (51) to the upper side of the refrigerator main body (31) by the chimney effect due to the high heat of the muffler (57). .

[0054] Trailer refrigerator mounting structure

In the trailer body (21), the trailer refrigerator (30) is installed in a state of being placed on the top plate portion (83) of the support member (80). In this state, the refrigerator (30) is in a state where the lower surface of the lower frame (63) is in contact with the top plate portion (83) of the support member (80). The refrigerator (30) is fixed to the trailer body (21) by fastening the lower frame (63) and the top plate portion (83) of the support member (80) with bolts. In addition, the refrigerator (30) has a back side (23) It is also fixed to the loading platform (23) with bolts so as to be in close contact with the front end surface of the.

In the present embodiment, the refrigerator (30) is placed on the support member (80) of the trailer body (21), and almost all the weight of the refrigerator (30) is supported by the support member (80). Is supported by. For this reason, the refrigerator (30) only needs to be fixed to the trailer body (21) to such an extent that the position of the refrigerator (30) does not shift during travel of the trailer (20). Therefore, the bolts for fixing the refrigerator (30) to the trailer body (21) are not so thick and are sufficient.

[0056] Driving action

Explain the operation of the refrigerator (30)!

[0057] The generator (51) is driven by the engine (50) to generate power, and the electric power generated by the generator (51) is generated by the compressor (41), the condenser fan (44), and the evaporator fan (45). To be supplied. When the compressor (41) is driven, the refrigerant circulates in the refrigerant circuit (40) and a refrigeration cycle is performed. That is, in the refrigerant circuit (40), the refrigerant dissipates heat to the outside air in the condenser (42) and condenses, and the evaporator (43) absorbs heat from the inside air and evaporates.

[0058] From the cargo compartment (24) of the trailer body (21), the air in the cabinet is sucked into the suction dust (72) by the evaporator fan (45), and exchanges heat with the refrigerant in the evaporator (43). To be cooled. The cooled interior air passes through the evaporator fan (45), and is sent back from the outlet (7a) into the cargo compartment (24).

When the condenser fan (44) is operated, the outside air is sucked into / into the condensing side passage (70) and is heated by exchanging heat with the refrigerant in the condenser (42). The heated outside air passes through the electrical component box (54) and the evaporator fan (45), and then blows out above the refrigerator main body (31) through the radiator (55).

[0060] The exhaust heat of the engine (50) and the generator (51) is blown out above the refrigerator main body (31) through the exhaust heat passage along the exhaust pipe (56) and the muffler (57). Is done.

[0061] Effects of one embodiment

In the present embodiment, the refrigerator (30) is placed on the support member (80) of the trailer body (21), and the refrigerator (30) is supported from below by the support member (80). For this reason, the upper structure part (67) of the frame body (60) arranged at the upper part of the refrigerator (30) needs to support the weight of the equipment installed at the lower part of the refrigerator (30) as in the prior art. This means that only the weight of the equipment installed at the top of the refrigerator (30) needs to be supported. Therefore, the frame of the refrigerator (30) The strength required for the body (60) is reduced, and the weight of the refrigerator (30) can be reduced accordingly. Also, the trailer body (21) does not need to be provided with a sturdy member for supporting the refrigerator (30) from the lower end to the upper end of the front end surface as in the conventional case, and the weight thereof can be reduced.

[0062] Thus, according to the present embodiment, the refrigerator (30) and the trailer body to which it is attached.

The weight of (21) can be reduced. As a result, the amount of cargo that can be loaded on the trailer body (21) can be increased, and the loading capacity of the trailer (20) can be improved. In addition, by reducing the weight of the refrigerator (30) and trailer body (21), the manufacturing cost of the refrigerator (30) and trailer body (21) can be kept low.

[0063] In the present embodiment, the base plate (81) of the support member (80) is formed integrally with the bottom plate member (27) conventionally provided on the trailer body (21), and the bottom plate member (27 ) To support the refrigerator (30). That is, the bottom plate member (27) provided on the trailer body (21) has been conventionally used as a member for supporting the refrigerator (30). Therefore, according to this embodiment, the member installed in the trailer body (21) for mounting the refrigerator (30) can be reduced in size, and the weight of the trailer body (21) resulting from the installation of the support member (80) can be reduced. Skill can be gained by minimizing the increase.

[0064] In the present embodiment, the support member (80) is formed in a shape in which the front edge is arcuate (that is, a shape in which the left and right corners on the front end side are cut out). The distance between 80) and the tractor (11) that pulls the trailer (20) is maintained. Therefore, according to the present embodiment, the front end surface of the trailer (20) and the tractor (11) can be brought close to each other without disturbing the travel of the trailer (20), and the trailer body (21) The size of the cargo room (24) can be secured to the maximum.

[0065] Further, in this embodiment, the engine (50), the generator (51), and the compressor (41), which are relatively heavy components of the refrigerator (30), are lower. The evaporator (43) and the evaporator fan (45), which are relatively light, are attached to the upper structure (67), respectively, on the side structure (61). For this reason, in the frame body (60), although a certain degree of strength is required for the lower structure portion (61), such a high strength is not required for the upper structure portion (67). Therefore, according to the present embodiment, the strength of the upper structure portion (67) of the frame body (60) can be lowered, and the refrigerator (30) can be reliably reduced in weight. [Modification 1 of Embodiment]

In this embodiment, as shown in FIG. 10, the guide piece is attached to the support member (80) of the trailer body (21).

(85) may be provided. The guide piece (85) is disposed along the right end of the support member (80) in the figure, and its tip protrudes above the top plate portion (83) of the support member (80). When the refrigerator (30) is attached to the trailer body (21), the refrigerator (30) is positioned in the left-right direction by bringing the refrigerator (30) into contact with the guide piece (85). That is, the guide piece (85) constitutes guide means for guiding the refrigerator (30) to a predetermined position when the refrigerator (30) is attached.

In the present embodiment, since the refrigerator (30) is placed on the support member (80), the position of the refrigerator (30) in the vertical direction is naturally determined. Further, since the back surface of the refrigerator (30) is in contact with the front end surface of the loading platform (23), the position of the refrigerator (30) in the front-rear direction is also determined naturally. Therefore, if the guide member (85) is provided on the support member (80), the relative position between the refrigerator (30) and the trailer body (21) is uniquely determined, and the relative position to the trailer body (21) is determined. Installation work of the refrigerator (30) can be facilitated.

[0068] In this modification, the force that provides the guide piece (85) to the support member (80) of the trailer body (21) may be provided to the refrigerator (30). Yo! /

[0069] Modification 2 of Embodiment 2

In this embodiment, as a means for connecting the refrigerator (30) and the front end surface of the loading platform (23), a clamp member (86) as shown in FIG. 11 may be used instead of the bolt! /, . This clamp member

(86) is a bar-shaped member having a U-shaped cross section, and is provided along the inner periphery of the opening (6a) of the panel member (69) and the opening (22) of the heat insulating wall (33). . In this modified example, a flat plate-like sealing material (87) is sandwiched between the heat insulating wall (33) which is the front end side surface of the loading platform (23) and the panel member (69) of the frame body (60). ing. The clamp member (86) fixes the heat insulating wall (33) and the panel member (69) in a state where the sealing material (87) is sandwiched between both sides.

[0070] It should be noted that the above embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use! /.

Industrial applicability As described above, the present invention is useful for a trailer refrigerator and a trailer including the same.

Claims

The scope of the claims

[1] A trailer body (21) that forms a cargo compartment (24) for storing cargo, and a refrigerator (30) that is attached to the trailer body (21) and cools the cargo compartment (24) A trailer that is towed by a tractor (11),

A support member (80) formed integrally with the trailer body (21) and projecting forward from the front end surface of the trailer body (21) is provided, and the refrigerator (30) is placed on the support member (80). Is placed

Trailer characterized by that.

[2] In claim 1,

At the bottom of the trailer body (21), a king pin (26) extends from the front end to the rear end side of the trailer body (21) and connects the trailer body (21) to the tractor (11). ) Is attached to the bottom structural member (27),

The support member (80) is formed integrally with the bottom structural member (27) and extends forward from the front end of the bottom structural member (27).

Trailer characterized by that.

[3] In claim 1 or 2,

The trailer characterized in that the support member (80) has a shape in which left and right corners on the front end side thereof are cut out.

[4] In claim 1 or 2,

The refrigerator (30) is attached to the trailer body (21) in a state where its rear surface is in contact with the front end surface of the trailer body (21).

When the refrigerator (30) is attached to the trailer body (21), guide means (85) are provided for guiding the refrigerator (30) to a predetermined position so that the relative positions of both in the left-right direction are appropriate. Has been

Trailer characterized by that.

[5] A cargo compartment (24) for receiving cargo formed by the trailer body (21) attached to the trailer body (21) of the trailer (20) towed by the tractor (11). ) For cooling trailers, The trailer body (21) is formed integrally with the trailer body (21) so as to be placed on the support member (80) protruding from the front surface of the trailer body (21) and fixed to the support member (80). A trailer refrigerator characterized by! /.

[6] In claim 5,

A refrigerant circuit (40) for performing a refrigeration cycle by circulating refrigerant, an engine (50) for driving the compressor (41) of the refrigerant circuit (40), the refrigerant circuit (40) and the engine (50 ) With a frame body (60) for attaching,

The frame body (60) is configured to be fastened to the support member (80) of the trailer body (21) and fixed to the support member (80).

A trailer refrigerator characterized by the above.

[7] In claim 6,

The frame body (60)

A lower structure (61) to which the engine (50) and the compressor (41) of the refrigerant circuit (40) are attached and fastened to the support member (80) of the trailer body (21);

The evaporator of the refrigerant circuit (40) is attached, and the upper structure (67) is provided on the upper side of the lower structure (61).

A trailer refrigerator characterized by the above.

[8] In claim 7,

The lower structure portion (61) has a framework structure in which rod-shaped members are combined, and the upper structure portion (67) has a flat plate shape extending upward from the back surface of the lower structure portion (61). ing

A trailer refrigerator characterized by the above.