CN210707622U

CN210707622U - Trailer bottom plate heating device

Info

Publication number: CN210707622U
Application number: CN201921268181.0U
Authority: CN
Inventors: 璧靛浆; 赵彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-06-09
Anticipated expiration: 2029-08-07

Abstract

The utility model provides a trailer bottom plate heating device, which comprises a main vehicle and a trailer towed by the main vehicle, wherein the main vehicle comprises a silencer, a towing plate and an air inlet pipe, the air inlet pipe receives tail gas exhausted by the silencer and is provided with one or more air outlets for exhausting the tail gas; the frame of the trailer is provided with an annular frame air inlet groove, the diameter of the frame air inlet groove is larger than the width of the frame, the frame air inlet groove is provided with one or more vertically arranged groove hole parts and an annular groove, the annular groove is communicated with the lower opening of the groove hole parts, and tail gas exhausted from an air outlet enters the groove hole parts from the lower opening of the groove hole parts through the annular groove, is upwards transmitted and is exhausted from the upper opening part of the groove hole parts; the bottom board of the trailer is provided with a tail gas circulation space, and the tail gas discharged from the upper opening flows into the circulation space. The utility model discloses can utilize the waste heat of tail gas to solve the goods and freeze and attach on the carriage and the problem of the big and incomplete defect such as unloading of the discharge degree of difficulty that causes improves conveying efficiency in cold areas.

Description

Trailer bottom plate heating device

Technical Field

The utility model relates to a trailer bottom plate heating device.

Background

A trailer refers to a vehicle that is towed by a car without power drive per se. A combination of a vehicle (truck or tractor, forklift) and one or more trailers. The truck or the tractor is a driving section of a motor train and is called as a main vehicle. The slave node towed by the master is called a trailer.

Along with the development of the domestic trailer market, the subdivision of the trailer is more and more inclined to specialization and practicality, however, in the cold winter area, due to the existence of moist and sprinkled goods, the goods are easily frozen on the carriage in the unloading process, the defective material rate is increased when the difficulty is brought to the goods to be unloaded, and further the transportation efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a problem that exists among the above-mentioned prior art of improvement provides, and its aim at solves in cold areas, because the goods freeze attach on the carriage and the discharge degree of difficulty that causes is big and the problem of defect such as discharge thoroughly to improve conveying efficiency.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a trailer floor heating apparatus having a main vehicle and a trailer towed by the main vehicle, the main vehicle including a muffler, a towing tray and an inlet pipe, an inlet of the inlet pipe being connected to the muffler to receive exhaust gas emitted by the muffler, and the inlet pipe having one or more exhaust outlet ports for exhaust gas; the trailer is provided with a frame and a carriage mounted on the frame, wherein the towing plate is circular, the frame of the trailer is connected to the trailer, an annular frame air inlet groove and the towing plate are concentrically arranged on the frame around the towing plate, the diameter of the frame air inlet groove is larger than the width of the frame, and the frame air inlet groove is provided with one or more groove hole parts and an annular groove, the one or more groove hole parts are vertically arranged and provided with an upper opening and a lower opening, the annular groove is communicated with the lower opening, and exhaust gas discharged from an air outlet enters the groove hole parts from the lower openings of the groove hole parts through the annular groove and is conveyed upwards and discharged from the upper opening; the vehicle compartment has a floor panel at which an exhaust gas circulation space is provided, into which exhaust gas discharged from the upper opening flows and through which exhaust gas circulates in a range from a foremost end to a rearmost end of the floor panel in a forward direction of the trailer and an end portion on one side to an end portion on the other side in a width direction of the floor panel.

In a preferred scheme, the radius of the frame air inlet groove is equal to the distance from the center of the traction disc to the center of the air outlet.

In a preferred scheme, the number of the air outlets is 2, the air outlets are respectively arranged in front of and behind the traction disc in the advancing direction of the main car, and the distances from the air outlets to the center of the traction disc are equal.

In a preferred embodiment, the number of the slot hole parts is 4, the slot hole parts are respectively arranged at positions for quartering the annular frame air inlet slot, and when the trailer is towed by the main tractor to run along a straight line, two slot hole parts are arranged at positions opposite to the two air outlets.

In a preferred embodiment, the air outlet is open upward.

In a preferred scheme, the bottom plate comprises a plurality of cross beams and a plurality of longitudinal beams connected to the cross beams, exhaust guide channels are arranged in the cross beams and the longitudinal beams and are communicated with each other to form the exhaust circulation space.

In the preferable scheme, bottom plate air inlet pipes are welded on the cross beam, the number of the bottom plate air inlet pipes is equal to that of the groove hole parts, the positions of the bottom plate air inlet pipes are opposite to that of the groove hole parts, the bottom plate air inlet pipes are communicated with the tail gas guide channels in the cross beam, the diameter of each bottom plate air inlet pipe is slightly smaller than that of the upper opening of each groove hole part, and the bottom plate air inlet pipes are downward opened, so that the bottom plate air inlet pipes can be embedded into the upper openings, and tail gas exhausted from the upper openings enters the tail gas guide channels through the.

In a preferred embodiment, the car further includes a horizontal bottom surface, the bottom plate is an inclined bottom plate having an inverted V-shaped cross section in the forward direction, and is formed by a first inclined side plate and a second inclined side plate, the first inclined side plate and the second inclined side plate are inclined downward from the middle of the car to both sides in the width direction of the car, and abut against the horizontal bottom surface at edges of both sides in the width direction of the car, so that a triangular space having a triangular cross section in the forward direction is defined by the horizontal bottom surface, the first inclined side plate, and the second inclined side plate, and the exhaust gas flow space is the triangular space.

In a preferred aspect, the vehicle compartment further has a horizontal bottom surface, the bottom plate is formed by a third inclined side plate, a fourth inclined side plate, and a planar bottom plate that is disposed between the third inclined side plate and the fourth inclined side plate, the third inclined side plate and the fourth inclined side plate are disposed on both sides in the width direction of the vehicle compartment, respectively, have a space, and have equal heights at end portions near the middle portion side of the vehicle compartment, the third inclined side plate and the fourth inclined side plate are inclined downward in a direction from the middle portion of the vehicle compartment toward both sides in the width direction of the vehicle compartment, and abut against the horizontal bottom surface at edges at both sides in the width direction of the vehicle compartment, the planar bottom plate is disposed between end portions near the middle portion side of the vehicle compartment of the third inclined side plate and the fourth inclined side plate, so that a trapezoidal space whose cross section in the forward direction is a trapezoid is surrounded by the horizontal bottom surface and the bottom plate, the exhaust gas circulation space is the trapezoidal space.

In a preferred embodiment, the horizontal bottom surface has a through hole, and the exhaust gas discharged from the upper opening of the slot portion enters the exhaust gas flowing space through the through hole and fills the exhaust gas flowing space.

In a preferred scheme, a wind shield plate or wind shield cloth covers the through hole.

In a preferred embodiment, the slot portion has a cylindrical hollow structure, a circular partition plate is installed inside the slot portion, the partition plate is disposed between the upper opening and the lower opening and has a diameter smaller than that of the cylinder, so that a space is provided between the partition plate and an inner wall of the slot portion, and the exhaust gas enters the slot portion from the lower opening, is upwardly transferred through the space, and is discharged from the upper opening.

Drawings

FIG. 1 is a schematic illustration of a primary tractor towing a trailer having a trailer floor heating arrangement in a first embodiment;

FIG. 2 is a schematic view of a combination of a main frame and a vehicle frame in a first embodiment;

FIG. 3 is a schematic view showing the direction of exhaust gas flowing in the frame in the first embodiment;

FIG. 4 is a schematic view of a notch portion of a frame inlet notch in the first embodiment;

FIG. 5 is a schematic view showing the hot air flow direction of the floor panel in the first embodiment;

FIG. 6 is a schematic illustration of a trailer having a trailer floor heating arrangement towed by a host vehicle in a second embodiment;

FIG. 7 is a schematic view showing the hot air flow direction of the floor pan in the second embodiment;

FIG. 8 is a schematic illustration of a host vehicle towing a trailer having a trailer floor heating arrangement in a third embodiment;

fig. 9 is a schematic view showing the hot air flow direction of the floor pan in the third embodiment.

Detailed Description

The following description will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments, and any modifications or substitutions made on the basic spirit of the present invention are also within the scope of the claims of the present invention.

< first embodiment >

A first embodiment will be described with reference to fig. 1 to 5. FIG. 1 is a schematic illustration of a primary tractor towing a trailer having a trailer floor heating arrangement in a first embodiment; FIG. 2 is a schematic view of a combination of a main frame and a vehicle frame in a first embodiment; FIG. 3 is a schematic view showing the direction of exhaust gas flowing in the frame in the first embodiment; FIG. 4 is a schematic view of a notch portion of a frame inlet notch in the first embodiment; fig. 5 is a schematic view showing the hot air flow direction of the floor panel in the first embodiment. Wherein the direction of the arrows in fig. 1-5 is the direction of the flow of the tail gas.

As shown in fig. 1, a main vehicle a tows a trailer B, the main vehicle a comprising an air inlet pipe 1, a towing disc 3 and a silencer 5, wherein the towing disc 3 is circular for connecting a frame 4 of the trailer B to the main vehicle a. The arrow direction in fig. 1 is the trend of tail gas, the tail gas that discharges is as the heating source, discharges by muffler 5 and gets into intake pipe 1, and intake pipe 1 extends to the trailer direction by the main car, and has two gas outlets 1a and 1b respectively in the front of the steering wheel and behind along the advancing direction of vehicle, and gas outlet 1a and 1b are symmetrical for its straight line perpendicular to the vehicle direction of advance that goes through the center of steering wheel, and the opening is up, lets the tail gas of discharging directly blow to frame air inlet duct 2.

The frame inlet slot 2 is an annular element arranged around the traction disc 3 concentric with the traction disc 3 and having a radius equal to the distance from the centre of the traction disc to the centre of the outlet opening 1a or 1 b. As shown in fig. 3, the frame inlet groove 2 is attached to the frame 4, and the diameter of the frame inlet groove 2 is larger than the width of the frame 4, so that a part of the frame inlet groove 2 is attached to the middle of the frame 4 and the other part is exposed to the outside in the width direction of the frame 4, which is perpendicular to the advancing direction of the vehicle.

The frame inlet duct 2 is provided with four

duct portions

2a, 2B, 2c, 2d at positions that bisect the annular member, respectively, and the four duct portions 2a-2d are communicated at lower portions thereof by an annular duct 2e provided along the circumference of the frame inlet duct 2, and when the vehicle is running straight, the main vehicle a and the trailer B are arranged along the same straight line, with the duct portions 2a and 2B positioned opposite to the two outlet ports 1a, 1B, respectively, and the exhaust gas discharged from the outlet ports 1a, 1B can directly enter the duct portions 2a and 2B and be guided to the

duct portions

2c and 2d by the annular duct 2e at the same time. When the main vehicle a and the trailer B are not in the same line when the vehicle turns, the positions of the notch parts 2a and 2B are offset from the two air outlets 1a and 1B, respectively, and the exhaust gas discharged from the air outlets 1a and 1B first enters the annular groove 2e, and is guided into the notch parts 2a-2d through the annular groove 2 e.

The

slot portions

2a, 2b, 2c, 2d have the same structure and dimensions, and the structure of the slot portion 2a will now be described with reference to fig. 4. The slot part 2a is a cylindrical hollow structure, the lower part of the slot part is fully open, namely the radius of the lower opening 21a is equal to the radius of the cylinder, and the radius of the lower opening 21a is larger than that of the air outlet 1a, so that the tail gas can rapidly enter the slot part 2a, the upper part of the slot part 2a is only partially open, the upper opening 22a is positioned in the center of the upper surface, and the radius of the upper opening 22a is smaller than that of the lower opening 21a, wherein the lower opening 21a is used as an inlet of the tail gas to introduce the tail gas of the air outlet 1a, the upper opening 22a is used as an outlet of the tail gas to guide the tail gas out, a partition plate 23a is additionally arranged in the middle of the cylindrical hollow slot part 2a, and the diameter of the partition plate 23a is smaller than that of the cylinder, namely, a. The exhaust gas entering from the lower opening 21a is transported upward through the interval between the inner walls of the slot portion 2a, reaches the upper opening 22a, and is discharged from the upper opening 22 a. The design of the partition 23a further facilitates better guiding of the exhaust gases out of the upper opening 22 a. Wherein the lower openings of the slot parts 2a-2d are respectively 21a-21d, and the lower openings 21a-21d are communicated with each other by a lower annular slot 2 e. In addition, the lower portions of the

slot portions

2a, 2b, 2c, 2d may not be fully open, i.e., the lower openings 21a-21d may have a radius smaller than the radius of the cylindrical shape, only that the radius of the lower openings 21a-21d is larger than the radius of the air outlet 1 a.

A bed 6 is mounted on the frame 4 of the trailer B, the bed 6 having a floor 6a supported by a plurality of cross members 7 and a plurality of side members 8 connected to the cross members 7. 4 bottom plate air inlet pipes 9 are welded on the cross beam 7, the positions of the bottom plate

air inlet pipes

9a, 9b, 9c and 9d are respectively opposite to the

slot parts

2a, 2b, 2c and 2d, the diameters of the bottom plate

air inlet pipes

9a, 9b, 9c and 9d are slightly smaller than the diameters of the upper openings 22a, 22b, 22c and 22d of the

slot parts

2a, 2b, 2c and 2d, the bottom plate

air inlet pipes

9a, 9b, 9c and 9d are downwards opened, so that the bottom plate

air inlet pipes

9a, 9b, 9c and 9d are respectively embedded into the upper openings 22a, 22b, 22c and 22d of the

slot parts

2a, 2b, 2c and 2d, and tail gas led out from the upper openings 22a, 22b, 22c and 22d can directly enter the bottom plate

air inlet pipes

9a, 9b, 9c and 9 d.

The plurality of cross members 7 and the plurality of side members 8 connected to the cross members 7 each have an exhaust gas guide passage therein and communicate with each other, so that the vehicle floor forms a network-like communicating gas flow passage 10 (exhaust gas flow space) by the plurality of cross members 7 and the plurality of side members 8. The tail gas entering from the bottom plate

air inlet pipes

9a, 9b, 9c and 9d circulates in the airflow channel 10, flows in the range of the whole bottom plate of the carriage 6, and is finally discharged from the discharge port at the tail end of the bottom plate of the carriage, so that the goods in the carriage are heated by using the waste heat of the tail gas discharged by the main vehicle, and the problems of large unloading difficulty and incomplete unloading caused by the fact that the goods are frozen on the carriage are solved.

Specifically, when the vehicle is running, exhaust gas generated by the main vehicle a as a heating source is discharged through the muffler 5 to the intake pipe 1, the intake pipe 1 guides the exhaust gas toward the trailer B, and is discharged from the air outlets 1a and 1b of the air inlet pipe 1 to the annular groove 2e of the frame air inlet groove 2, the exhaust gas is guided through the annular groove 2e into the groove portions 2a to 2d, the groove portions 2a to 2d being opposed to the floor intake ducts 9a to 9d, respectively, on the cross member 7 of the floor of the vehicle compartment 6, the floor intake ducts 9a to 9d being inserted into the upper openings 22a to 22d of the groove portions 2a to 2d, respectively, so that the exhaust gases enter the floor air inlet ducts 9a-9d through the upper openings 22a-22d, and flows in the air flow channel 10 communicated with the net of the bottom plate of the carriage 6, so that the goods in the carriage are heated by the bottom of the carriage by utilizing the waste heat of the tail gas.

When the main vehicle A pulls the trailer B to run straight, the exhaust gas discharged from the air outlets 1a and 1B can enter the slot parts 2a and 2B more conveniently because the slot parts 2a and 2B are opposite to the air outlets 1a and 1B, and the utilization rate of the exhaust gas is higher. When the

slot parts

2a and 2b deviate from the air outlets 1a and 1b in the turning driving process of the vehicle, the tail gas discharged from the air outlets 1a and 1b is guided by the annular slot 2e, and the tail gas can also be guided into the lower openings 21a-21d of the slot parts 2a-2d, so that the bottom of the carriage can be sufficiently heated by fully utilizing the residual heat of the tail gas even when the vehicle turns, and the utilization rate of the tail gas is further improved.

< second embodiment >

The second embodiment is different from the first embodiment in the structure of the floor panel, the floor panel of the first embodiment is a flat floor panel, while the floor panel of the present embodiment is an inclined floor panel having an inverted V-shaped cross section and mounted on a horizontal bottom surface of the vehicle compartment, and the exhaust gas is transmitted in a triangular space defined between the inclined floor panel and the horizontal bottom surface and fills the entire triangular space. The same reference numerals will be used to identify the same parts of the second embodiment as those of the first embodiment and a description thereof will be omitted.

As shown in fig. 1 and 6, the present embodiment has a main vehicle a having the same structure as the first embodiment, and an intake pipe 1, a traction disc 3, and a muffler 5 provided on the main vehicle a, has a frame 4 having the same structure as the first embodiment, and a frame intake groove 2 provided on the frame 4, as shown in fig. 2 to 4, and has the same structure as the first embodiment as well as the four groove hole portions 2a to 2d and the annular groove 2e included in the frame intake groove 2.

As shown in fig. 6 to 7, the vehicle compartment of the present embodiment has a horizontal bottom surface 11 and a sloping floor 12 fixed to the horizontal bottom surface with an inverted V-shaped cross section, and the sloping floor 12 is constituted by a pair of sloping side plates having a greater height at the middle of the vehicle compartment than at the edges in the width direction of the vehicle compartment, sloping downward from the middle of the vehicle compartment toward the edges at both sides of the vehicle compartment, and abutting against the horizontal bottom surface 11 at the edges at both sides in the width direction of the vehicle compartment. The pair of inclined side plates are supported by the ribs 13 at the middle portions in the respective extending directions, so that they can be more stably disposed on the horizontal bottom surface 11. So that a triangular space S having a triangular cross section is defined by the horizontal bottom surface 11 and the inclined bottom plate 12 of the inverted V shape.

The lower part of the horizontal bottom surface 11 is provided with a through hole 14, and the upper openings 22a-22d passing through the four slot hole parts 2a-2d in the frame air inlet slot 2 can enter the triangular space S through the through hole 14 and fill the triangular space S. The through hole 14 may be in any form as long as it can make the exhaust gas discharged from the upper openings 22a to 22d of the four slot parts 2a to 2d smoothly enter the triangular space S, and may be four openings corresponding to the positions of the four slot parts 2a to 2d, the size of the openings being larger than that of the upper openings 22a to 22d of the slot parts 2a to 2d, or a circular through hole corresponding to the annular structure of the frame inlet slot 2, the diameter of the circular through hole being larger than the outer diameter of the annular structure.

In order to prevent the exhaust gas from overflowing from the through hole 14 and dissipating heat due to the excessive opening of the through hole 14 on the bottom surface 11 of the vehicle compartment, and reduce heating efficiency, and the harmful gases containing sulfur and the like in the exhaust gas corrode relevant parts and electric circuits of the vehicle compartment, a wind shield 15 made of aluminum alloy plate or other materials may be additionally installed at the through hole 14, wherein the wind shield 15 may also be wind shielding cloth with the same function.

Specifically, when the vehicle is running, exhaust gas generated by the main vehicle a as a heating source is discharged through the muffler 5 to the intake pipe 1, the intake pipe 1 guides the exhaust gas toward the trailer B, and is discharged from the air outlets 1a and 1B of the intake pipe 1 into the annular groove 2e of the frame intake duct 2, the exhaust gas is guided through the annular groove 2e into the lower openings 21a to 21d of the slot portions 2a to 2d, the exhaust gas is discharged upward from the lower openings 21a to 21d, and is discharged upward from the upper openings 22a to 22d through the spaces between the partitions 23a to 23d and the inner walls of the slot portions 2a to 2d, respectively, the discharged exhaust gas passes through the through-holes 14 into the triangular space S and fills the triangular space S gradually, the triangular space S forms a cooling air cushion layer between the inclined bottom plate 12 and the horizontal bottom plate 11, so that the cargo is not frozen to the vehicle compartment, is convenient for unloading and ensures thorough unloading.

slot parts

< third embodiment >

The third embodiment is different from the second embodiment in the structure of the floor panel, the floor panel of the second embodiment is an inclined floor having an inverted V-shaped cross section and mounted on a horizontal bottom surface of the vehicle compartment, and the exhaust gas is transmitted in a triangular space defined between the inclined floor and the horizontal bottom surface and fills the entire triangular space. The space that encloses between carriage bottom plate and the horizontal bottom surface of this embodiment is trapezoidal space, and tail gas transmits and is full of whole trapezoidal space in trapezoidal space. The same reference numerals will be used for the third embodiment where they are the same as the second embodiment and the description will be omitted.

As shown in fig. 1, 6, and 8, the present embodiment has a main body a having the same structure as the first and second embodiments, and an intake pipe 1, a traction disc 3, and a muffler 5 provided on the main body a, and has a frame 4 having the same structure as the first and second embodiments, and a frame intake groove 2 provided on the frame 4, as shown in fig. 2 to 4, and the structures of four notch portions 2a to 2d and an annular groove 2e included in the frame intake groove 2 are also the same as those in the first and second embodiments.

As shown in fig. 8 to 9, the vehicle compartment of the present embodiment has a horizontal bottom surface 31 and a bottom plate 32 fixed on the horizontal bottom surface, the bottom plate 32 is constituted by a pair of inclined side plates and a planar bottom plate that is mounted between the pair of inclined side plates, the pair of inclined side plates are respectively provided on both sides in the width direction of the vehicle compartment, the height of the pair of inclined side plates at the end portions near the middle portion side of the vehicle compartment is equal to and greater than the height of the edges thereof in the width direction of the vehicle compartment, the pair of inclined side plates are inclined downward in the direction from the middle portion of the vehicle compartment toward both sides in the width direction of the vehicle compartment and abut against the horizontal bottom surface 31 at both side edges in the width direction of. The flat bottom plate is supported on a horizontal floor surface by ribs 33, and the pair of inclined side plates are supported by a bottom plate reinforcing seal plate 34 at end portions near the cabin middle portion side, so that the bottom plate 32 can be more stably provided on the horizontal bottom surface 31. A trapezoidal space S' having a trapezoidal cross section is thus defined by the horizontal bottom surface 31 and the bottom plate 32.

The lower portion of the horizontal bottom surface 31 has a through hole 35, and the upper openings 22a-22d passing through the four slot portions 2a-2d in the frame inlet slot 2 can enter the trapezoidal space S 'through the through hole 35 and fill the trapezoidal space S'. The through hole 14 may be in any form as long as it can make the exhaust gas discharged from the upper openings 22a to 22d of the four slot parts 2a to 2d smoothly enter the triangular space S, and may be four openings corresponding to the positions of the four slot parts 2a to 2d, the size of the openings being larger than that of the upper openings 22a to 22d of the slot parts 2a to 2d, or a circular through hole corresponding to the annular structure of the frame inlet slot 2, the diameter of the circular through hole being larger than the outer diameter of the annular structure. The reinforcing sealing plate 34 is formed with holes for the exhaust gas to pass through, thereby facilitating the exhaust gas to be rapidly filled in the trapezoidal space S'.

In order to prevent the exhaust gas from overflowing from the through hole 35 and dissipating heat due to the excessive opening of the through hole 35 on the bottom surface 31 of the vehicle compartment, and reduce heating efficiency, and the harmful gases containing sulfur and the like in the exhaust gas corrode relevant parts and electric circuits of the vehicle compartment, a wind shield 36 made of aluminum alloy plate or other materials may be additionally installed at the through hole 35, wherein the wind shield 36 may also be wind shield cloth with the same function.

Specifically, while the vehicle is running, exhaust gas generated by the host vehicle a as a heating source is discharged through the muffler 5 to the intake pipe 1, the intake pipe 1 guides the exhaust gas toward the trailer B, and is discharged from the air outlets 1a and 1B of the intake pipe 1 into the annular groove 2e of the frame intake duct 2, the exhaust gas is guided through the annular groove 2e into the lower openings 21a to 21d of the slot portions 2a to 2d, the exhaust gas is discharged upward from the lower openings 21a to 21d, and is discharged upward through the upper openings 22a to 22d, respectively, via the spaces between the partitions 23a to 23d and the inner walls of the slot portions 2a to 2d, respectively, the discharged exhaust gas passes through the through-holes 35 to enter the trapezoidal space S ' and gradually fills the trapezoidal space S ', so that the trapezoidal space S ' forms a cooling air cushion layer between the floor 32 and the horizontal bottom surface 31 to keep the cargo from freezing on the vehicle compartment, is convenient for unloading and ensures thorough unloading.

slot parts

The above listed patterns are only three embodiments of the present invention, and the present invention is not limited thereto. The utility model discloses in, including two gas outlets 1a and 1b, four

slot portions

2a, 2b, 2c, 2d, four bottom

plate intake pipe

9a, 9b, 9c, 9d, but this application is not limited to this, the number of gas outlet can be for 1 and or more than 3, the number of slot portion and bottom plate intake pipe also can be for 1 or more, preferably the number of slot portion and bottom plate intake pipe is greater than or equal to the number of air inlet, in order to be more favorable to guaranteeing heat transmission efficiency, the number of slot portion and bottom plate intake pipe also can be less than the number of gas outlet, the position that can have partial slot portion is relative with the position of gas outlet, also can all slot portions all with the position deviation of gas outlet. The present embodiment is also applicable to rear-tipping (dump) of trailers of various lengths and heights.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art are all the protective scope of the present invention without departing from the design solutions of the present invention, and the technical contents of the present invention as claimed are described in the claims.

Claims

1. A trailer floor heating apparatus having a host vehicle and a trailer towed by the host vehicle, characterized in that:

the main vehicle comprises a silencer, a traction disc and an air inlet pipe, wherein the inlet of the air inlet pipe is connected with the silencer to receive tail gas exhausted by the silencer, and the air inlet pipe is provided with one or more air outlets for exhausting the tail gas;

the trailer is provided with a frame and a carriage mounted on the frame, wherein the towing plate is circular, the frame of the trailer is connected to the trailer, an annular frame air inlet groove and the towing plate are concentrically arranged on the frame around the towing plate, the diameter of the frame air inlet groove is larger than the width of the frame, and the frame air inlet groove is provided with one or more groove hole parts and an annular groove, the one or more groove hole parts are vertically arranged, the groove hole part is provided with an upper opening and a lower opening, the annular groove is communicated with the lower opening, and tail gas exhausted from an air outlet enters the groove hole part from the lower opening of the groove hole part through the annular groove and is conveyed upwards and is exhausted from the upper opening part;

the vehicle compartment has a floor panel at which an exhaust gas circulation space is provided, into which exhaust gas discharged from the upper opening flows and through which exhaust gas circulates in a range from a foremost end to a rearmost end of the floor panel in a forward direction of the trailer and an end portion on one side to an end portion on the other side in a width direction of the floor panel.

2. The trailer floor heating apparatus of claim 1, wherein: the radius of the frame air inlet groove is equal to the distance from the center of the traction disc to the center of the air outlet.

3. The trailer floor heating apparatus of claim 2, wherein: the number of the air outlets is 2, the air outlets are respectively arranged in front of and behind the traction disc in the advancing direction of the main tractor, and the distances from the air outlets to the center of the traction disc are equal.

4. The trailer floor heating apparatus of claim 3, wherein: the number of the slot hole parts is 4, the slot hole parts are respectively arranged at the positions which are used for quartering the annular frame air inlet slot, and when the main tractor pulls the trailer to run along a straight line, the positions of the two slot hole parts are opposite to the positions of the two air outlets.

5. The trailer floor heating apparatus as claimed in any one of claims 1-4, wherein: the air outlet is opened upward.

6. The trailer floor heating apparatus of claim 1, wherein: the bottom plate comprises a plurality of cross beams and a plurality of longitudinal beams connected to the cross beams, tail gas guide channels are arranged in the cross beams and the longitudinal beams and are communicated with each other to form a tail gas circulation space.

7. The trailer floor heating apparatus of claim 6, wherein: the welding has quantity on the crossbeam with the slotted hole portion equal and the position with the relative bottom plate intake pipe of slotted hole portion, the bottom plate intake pipe with in the crossbeam tail gas guide channel intercommunication, the diameter of bottom plate intake pipe slightly is less than the slotted hole portion upper portion open-ended diameter to the downwardly opening, thereby the bottom plate intake pipe can be embedded in the upper portion opening, by upper portion opening exhaust tail gas by the bottom plate intake pipe gets into tail gas guide channel.

8. The trailer floor heating apparatus of claim 1, wherein: the carriage further comprises a horizontal bottom surface, the bottom plate is an inclined bottom plate with an inverted V-shaped cross section in the advancing direction and is composed of a first inclined side plate and a second inclined side plate, the first inclined side plate and the second inclined side plate are inclined downwards from the middle of the carriage to the two sides of the carriage in the width direction respectively, edges of the two sides of the carriage in the width direction respectively abut against the horizontal bottom surface, a triangular space with a triangular cross section in the advancing direction is formed by the horizontal bottom surface, the first inclined side plate and the second inclined side plate in a surrounding mode, and the exhaust gas flowing space is the triangular space.

9. The trailer floor heating apparatus of claim 1, wherein: the vehicle compartment further has a horizontal bottom surface constituted by third and fourth inclined side plates which are respectively provided on both sides in a width direction of the vehicle compartment with a space and are equal in height at an end portion near a middle portion side of the vehicle compartment, and a planar bottom plate which is provided between the third and fourth inclined side plates at an end portion near the middle portion side of the vehicle compartment and which is inclined downward in a direction from a middle portion of the vehicle compartment toward both sides in the width direction of the vehicle compartment and abuts against the horizontal bottom surface at edges of both sides in the width direction of the vehicle compartment, the planar bottom plate being provided between the end portions near the middle portion side of the vehicle compartment of the third and fourth inclined side plates so that a trapezoidal space whose cross section in a forward direction is trapezoidal is surrounded by the horizontal bottom surface and the bottom plate, the exhaust gas circulation space is the trapezoidal space.

10. A trailer floor heating apparatus as claimed in claim 8 or 9, wherein: the horizontal bottom surface is provided with a through hole, and tail gas discharged from the upper opening of the slot part enters the tail gas circulation space through the through hole and is filled in the tail gas circulation space.

11. The trailer floor heating apparatus of claim 10, wherein: and the through hole is covered with a wind shield plate or wind shield cloth.

12. The trailer floor heating apparatus as claimed in any one of claims 1-4, wherein: the slot part is a cylindrical hollow structure, a circular partition plate is installed inside the slot part, the partition plate is arranged between the upper opening and the lower opening, the diameter of the partition plate is smaller than that of the cylinder, therefore, a space is formed between the partition plate and the inner wall of the slot part, and the tail gas enters the slot part from the lower opening, is upwards transmitted through the space and is discharged from the upper opening.

13. A trailer floor heating apparatus as claimed in claim 8 or 9, wherein: the bottom plate is supported on the horizontal bottom surface by a supporting member, and the supporting member is provided with an opening through which the exhaust gas passes.