Saturated water vapor transportation semitrailer

Abstract

The utility model discloses a saturated water vapor transportation semitrailer, which relates to the technical field of transportation semitrailers, and comprises an underframe, a metal tank body, a walking mechanism, support legs, a traction seat and a heat insulation structure, the underframe comprises a walking mechanism girder and a walking mechanism secondary beam which are horizontally connected with each other; the lower portion of the tail of the metal tank is connected to the upper surface of the walking mechanism girder through a plurality of tank supports, a traction base connecting plate is connected to the lower portion of the middle of the metal tank, one end of the walking mechanism auxiliary beam is connected with the traction base connecting plate, and the other end of the walking mechanism auxiliary beam is connected with the walking mechanism girder. The walking mechanism is arranged below the walking mechanism girder; the supporting legs are suitable for being vertically supported and connected to the bottom of the traction seat connecting plate; the traction seat is connected under the head part of the metal tank body; the heat insulation structure comprises a tank body heat insulation assembly, a traction base heat insulation assembly, a supporting leg heat insulation assembly and a tank body support heat insulation assembly. And through multiple heat insulation and heat preservation structures, heat loss and conduction in the transportation process of the semitrailer are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transport semi-trailers, in particular to a saturated steam transport semi-trailer. Background Art

[0002] A saturated steam transport vehicle is a vehicle used to transport compressed or liquefied steam. Its main structure includes a running mechanism (semi-trailer chassis) and a tank structure, where the tank structure is used for loading and unloading saturated steam.

[0003] However, the existing transport semi-trailer is only suitable for transporting general goods. For some special goods, such as saturated steam, it needs to be transported to enterprises that require steam at high temperatures. Since the medium pressure of the filled saturated steam is ≤ 2.5 MPa and the temperature is 135 - 225 °C, currently, ordinary transport semi-trailers are used to transport saturated steam. During transportation and storage, the temperature loss is relatively large, and sometimes the heat energy loss even reaches more than 95%. When discharging at 0.6 MPa, the discharged steam volume is ≤ 3.2 tons.

[0004] Based on the above reasons, there is an urgent need to develop a saturated steam transport semi-trailer. Content of the Utility Model

[0005] The main purpose of the utility model is to propose a saturated steam transport semi-trailer, aiming to solve the technical problem of large temperature loss during the transportation of semi-trailers in the prior art.

[0006] To achieve the above purpose, the utility model proposes a saturated steam transport semi-trailer, including:

[0007] A chassis, including a running mechanism main beam and a running mechanism auxiliary beam that are horizontally connected to each other and have the same central symmetry axis;

[0008] A metal tank, the tail of the metal tank is connected to the upper surface of the running mechanism main beam through a plurality of tank supports, a towing seat connecting plate is connected to the lower part of the middle of the metal tank, and one end of the running mechanism auxiliary beam is connected to the towing seat connecting plate and the other end is connected to the running mechanism main beam;

[0009] A running mechanism, arranged below the running mechanism main beam;

[0010] A leg, adapted to be vertically supported and connected to the bottom of the towing seat connecting plate;

[0011] A towing seat, connected to the lower part of the head of the metal tank, and the towing seat is adapted to be hooked to the tow board of a power truck;

[0012] The heat insulation structure includes a tank body heat insulation component wrapped around the outer surface of the metal tank body, a towing seat heat insulation component connected between the towing seat connecting plate and the towing seat, a leg heat insulation component connected between the tank body support and the legs, and a tank body support heat insulation component wrapped around the outer surface of the tank body support.

[0013] Optionally, the towing seat connecting plate includes a towing plate horizontally and vertically located directly below the metal tank body and wing plates located on both sides of the towing plate. One end of the wing plate is connected to the towing plate, and the other end is adapted to be connected to the lower surface of the metal tank body in a matching manner.

[0014] Optionally, the traveling mechanism includes a suspension bracket, a leaf spring, a universal rod, a first lifting lug installed at the bottom of the suspension bracket, and a second lifting lug connected to the side of the leaf spring close to the first lifting lug. The leaf spring is connected to the axle through a wheel, and the front end of the leaf spring is hinged to the suspension bracket, and the rear end of the leaf spring is slidably connected to the suspension bracket; the front end of the universal rod is connected to the first lifting lug, and the rear end of the universal rod is connected to the second lifting lug.

[0015] Optionally, the front end of the leaf spring is provided with a coiled ear, a bushing is inlaid in the coiled ear, a pin shaft hole is provided on the hinge plate of the suspension bracket, and the front end of the leaf spring is hinged to the suspension bracket through the pin shaft hole and the pin shaft.

[0016] Optionally, the leg includes an outer leg, a lifting inner leg that can be telescoped up and down inside the outer leg, and a lead screw connecting the outer leg and the lifting inner leg. The lead screw is respectively clamped with a bushing, a nut fixed inside the lifting inner leg, and a bearing seat installed on the inner side of the outer leg, and a driving mechanism is installed around the lead screw at the upper end of the bearing seat.

[0017] Optionally, the driving mechanism is a driving motor or a manual mechanical type.

[0018] Optionally, the tank body heat insulation component includes a tin foil layer and a skin insulation layer sequentially wrapped around the outer surface of the metal tank body.

[0019] Optionally, the towing seat heat insulation component includes a first nano heat insulation coating coated on the outer surface of the towing seat connecting plate and a first heat insulation gasket laid between the towing seat and the towing seat connecting plate;

[0020] The leg heat insulation component includes a second nano heat insulation coating coated on the outer surface of the tank body support and a second heat insulation gasket laid between the tank body support and the legs.

[0021] Optionally, the tank support heat insulation assembly includes a third nano heat insulation coating applied on the outer surface of the tank support, a first heat insulation layer wrapped around the tank support, and a third heat insulation gasket installed between the tank support and the girder of the traveling mechanism.

[0022] Optionally, the metal tank is a load-bearing steel welded structure with a cylindrical cross-section, and a drain hole with a diameter of Φ450mm is provided in the center of the front head of the metal tank.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] In the technical solution of the present utility model, the saturated steam transportation semi-trailer is composed of a chassis 1, a metal tank, a traveling mechanism, legs, a towing seat, and a heat insulation and heat preservation structure. The chassis is used to support and connect the metal tank, the traveling mechanism, the legs, and the towing seat. In a split manner, the main components of the semi-trailer can be disassembled for transportation during the transportation of the semi-trailer, improving the space utilization rate. Moreover, after part of the semi-trailer is damaged, it can be quickly repaired and replaced, with strong practicability; the traveling mechanism is used to connect with the metal tank, axles, wheels, etc. to support the metal tank; the legs are used to assist in supporting the semi-trailer during the loading and unloading of saturated steam or during parking for maintenance, and can adjust the height of the semi-trailer according to the actual height of the pallet of various tractors. These movable legs should generally be retracted during the driving process of the semi-trailer to reliably avoid contact between the movable legs and the ground and prevent the induction of safety accidents; the towing seat is a connecting device between the tractor and the semi-trailer, which can connect the tractor head and the metal tank; the heat insulation and heat preservation structure is used to insulate or keep warm the metal tank for loading high-temperature saturated steam, the towing seat connecting plate, the towing seat, the tank support, and the legs, so it plays a role in heat insulation and heat preservation for the transported saturated steam, reducing the heat energy loss during transportation or storage. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is the front view structural schematic diagram of the saturated steam transportation semi-trailer in the embodiment of the present utility model;

[0027] Figure 2 It is the front view structural schematic diagram of the traveling mechanism in the embodiment of the present utility model;

[0028] Figure 3It is a top view structural schematic diagram of the traveling mechanism in the embodiment of the present utility model;

[0029] Figure 4 It is a partial enlarged structural schematic diagram of the tail of the saturated steam transportation semi-trailer in the embodiment of the present utility model;

[0030] Figure 5 It is a mounting structural schematic diagram of the tank support, the tank heat insulation assembly and the traveling mechanism girder in the embodiment of the present utility model;

[0031] Figure 6 It is a mounting structural schematic diagram of the metal tank, the towing seat connecting plate, the towing seat heat insulation assembly and the towing seat in the embodiment of the present utility model;

[0032] Figure 7 It is a mounting structural schematic diagram of the metal tank, the tank support, the leg heat insulation assembly and the legs in the embodiment of the present utility model.

[0033] Explanation of the reference numerals:

[0034] 1 - chassis; 11 - traveling mechanism girder; 12 - traveling mechanism auxiliary girder;

[0035] 2 - metal tank; 21 - tank support; 22 - towing seat connecting plate; 221 - towing plate; 222 - wing plate;

[0036] 3 - traveling mechanism; 31 - suspension bracket; 311 - hinge plate; 32 - leaf spring; 321 - eye; 33 - universal rod; 34 - first lifting lug; 35 - second lifting lug; 36 - wheel; 37 - axle;

[0037] 4 - legs; 41 - outer leg; 42 - lifting inner leg;

[0038] 5 - towing seat;

[0039] 6 - heat insulation and thermal protection structure; 61 - tank heat insulation assembly; 62 - towing seat heat insulation assembly; 63 - leg heat insulation assembly; 64 - tank support heat insulation assembly. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0041] The Z-axis in the attached drawings represents the vertical direction, that is, the up-and-down position. The positive direction of the Z-axis represents the upper side, and the negative direction of the Z-axis represents the lower side. The X-axis in the attached drawings represents the horizontal direction and is specified as the front-and-back position. The positive direction of the X-axis represents the front side, and the negative direction of the X-axis represents the rear side. The Y-axis in the attached drawings represents the left-and-right position. The positive direction of the Y-axis represents the left side, and the negative direction of the Y-axis represents the right side. It should be noted that the meanings represented by the foregoing Z-axis, Y-axis, and X-axis are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated devices or components must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, rear,...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0044] Please refer to Figure 1-7 As shown, the embodiments of the present utility model provide a saturated steam transport semi-trailer, and the saturated steam transport semi-trailer includes a chassis 1, a metal tank 2, a running gear 3, legs 4, a drawbar 5, and a heat insulation and heat preservation structure 6, wherein:

[0045] The chassis 1 includes a traveling mechanism main beam 11 and a traveling mechanism auxiliary beam 12. The traveling mechanism main beam 11 and the traveling mechanism auxiliary beam 12 are horizontally connected to each other and are on the same central symmetry axis. The tail of the metal tank 2 is connected to the upper surface of the traveling mechanism main beam 11 through a plurality of tank supports 21. A towing seat connecting plate 22 is connected directly below the middle of the metal tank 2. One end of the traveling mechanism auxiliary beam 12 is connected to the towing seat connecting plate 22, and the other end of the traveling mechanism auxiliary beam 12 is connected to the traveling mechanism main beam 11. The traveling mechanism 3 is arranged below the traveling mechanism main beam 11. The support legs 4 are vertically supported and connected to the bottom of the towing seat connecting plate 22. The towing seat 5 is connected directly below the head of the metal tank 2, and the towing seat 5 is adapted to be hooked to the trailer board of a powered truck. The heat insulation and thermal protection structure 6 includes a tank heat insulation component 61, a towing seat heat insulation component 62, a support leg heat insulation component 63, and a tank support heat insulation component 64. The tank heat insulation component 61 is wrapped around the outer surface of the metal tank 2. The towing seat heat insulation component 62 is connected between the towing seat connecting plate 22 and the towing seat 5. The support leg heat insulation component 63 is connected between the tank support 21 and the support legs 4. The tank support heat insulation component 64 is wrapped around the outer surface of the tank support 21.

[0046] It should be explained that the tail of the metal tank 2 is the end of the horizontally placed cylindrical tank along the transportation driving direction, that is, the negative direction of the X axis in the attached Figure 1 figure, and the head of the metal tank 2 is the head end of the horizontally placed cylindrical tank along the transportation driving direction, that is, the positive direction of the X axis in the attached Figure 1 figure.

[0047] Specifically in this embodiment, the chassis 1 is composed of a traveling mechanism main beam 11 and a traveling mechanism auxiliary beam 12. The traveling mechanism main beam 11 is provided with two longitudinally arranged beams and a plurality of cross beams evenly distributed and connected between the two longitudinally arranged beams. In a split manner, it is convenient to disassemble and assemble multiple main components, and bolt groups are used for connection and fixation. During the transportation of the semi-trailer, the main components of the semi-trailer can be disassembled for transportation, improving the space utilization rate. Moreover, after part of the semi-trailer is damaged, it can be quickly repaired and replaced, which has strong practicability.

[0048] Preferably, the structural shape of the metal tank 2 is a straight cylindrical tank structure. The conventional straight cylindrical tank structure includes a front head, a cylinder body, and a rear head connected in sequence from left to right. The cylinder body is a straight cylinder with openings at both ends, and the front head and the rear head are welded to both ends of the straight cylinder body. This kind of straight cylindrical tank structure has simple technology and convenient arrangement of other components.

[0049] The running gear 3 is used to connect with the metal tank body 2, axle, wheels, etc., so as to support the metal tank body 2; the outriggers 4 are used to assist in supporting the semi-trailer during the loading and unloading of saturated steam or during parking maintenance, and the height of the semi-trailer can be adjusted according to the actual height of the pallet of various tractors. These movable outriggers should generally be retracted during the running of the semi-trailer, so as to reliably avoid the contact between the movable outriggers and the ground and prevent the induction of safety accidents; the fifth wheel 5 is a connecting device between the tractor and the semi-trailer, and can connect the tractor head and the metal tank body 2.

[0050] The heat insulation and preservation structure 6 is used to insulate or preserve the metal tank body 2 loaded with high-temperature saturated steam, the fifth wheel connecting plate 22, the fifth wheel 5, the tank body support 21 and the outriggers 4, so it plays a role in heat insulation and preservation for the transported saturated steam, reducing the heat energy loss during transportation or storage.

[0051] Thus, the medium pressure of the saturated steam filled in the saturated steam transport semi-trailer ≤ 2.95 MPa, the temperature can reach 135 - 245 °C, and when discharging 0.6 MPa, the discharged steam volume ≤ 4 tons.

[0052] Further, please refer to Figure 2 、 6 As shown, the fifth wheel connecting plate 22 includes a traction plate 221 and wing plates 222. Among them, the traction plate 221 is horizontally perpendicular to the lower part of the metal tank body 2, and the wing plates 222 are located on both sides of the traction plate 221. One end of the wing plates 222 is connected to the traction plate 221, and the other end is adapted to be connected to the lower surface of the metal tank body 2.

[0053] Specifically in this embodiment, the fifth wheel connecting plate 22 is composed of a traction plate 221 and wing plates 222. Among them, the shape of the part of the wing plates 222 in contact with the metal tank body 2 is adapted, ensuring the smooth transportation of the metal tank body 2. The traction plate 221 is adapted to be fixedly connected to the fifth wheel 5, which is convenient for installation and disassembly.

[0054] Further, please refer to Figure 1 、 2 As shown, the running gear 3 includes a suspension bracket 31, a leaf spring 32, a universal rod 33, a first hanger 34 and a second hanger 35. The first hanger 34 is installed at the bottom of the suspension bracket 31, and the second hanger 35 is connected to one side of the leaf spring 32 close to the first hanger 34. The leaf spring 32 is connected to the axle 37 through the wheel 36, and the front end of the leaf spring 32 is hinged to the suspension bracket 31, and the rear end of the leaf spring 32 is slidably connected to the suspension bracket 31; the front end of the universal rod 33 is connected to the first hanger 34, and the rear end of the universal rod 33 is connected to the second hanger 35.

[0055] Specifically in this embodiment, both the front and rear ends of the leaf spring 32 are arranged within the notches formed by the hinge plates 311 of the suspension brackets 31, restricting the left - right translation and rotation of the leaf spring 32. There are four suspension brackets 31 in this embodiment, namely the front suspension bracket, the first middle suspension bracket, the second middle suspension bracket, and the rear suspension bracket. The rear end of the leaf spring 32 is provided with a shackle 321, and a bushing is inserted into the shackle 321. Pin holes are respectively machined at both ends of the hinge plates 311 of the front suspension bracket, the first middle suspension bracket, and the second middle suspension bracket. The front ends of the hinge plates 311 of the front suspension bracket, the first middle suspension bracket, and the front ends of the hinge plates 311 of the second middle suspension bracket are respectively hinged to the front end of the leaf spring 32 through the pin holes and pins. The rear ends of the hinge plates 311 of the first middle suspension bracket, the rear ends of the hinge plates 311 of the second middle suspension bracket, and the rear suspension bracket are respectively slidably connected to the rear end of the leaf spring 32. The leaf spring 32 can freely extend after being loaded.

[0056] During the production process of the vehicle frame, the front suspension bracket, the first middle suspension bracket, the second middle suspension bracket, and the rear suspension bracket are welded on the walking mechanism girder 11. The walking mechanism 3 is fabricated separately, and the walking mechanism 3 also includes wheels, brake cylinders, and other accessory parts. It has a simple structure, is easy to operate, has a small number of parts, greatly reduces the vehicle's self - weight, lowers the production cost, and is maintenance - free, meeting the lightweight requirements of the semi - trailer, and solving the problems of the chassis 1 running off - track and abnormal wear of the wheels caused by the loosening of the universal rod 33 during the use of the existing semi - trailer.

[0057] Further, please refer to Figure 2 As shown, both ends of the leaf spring 32 are provided with shackles 321, bushings are inserted into the shackles 321, pin holes are provided on the hinge plates 311 of the suspension brackets 31, and both ends of the leaf spring 32 are hinged to the suspension brackets 31 through the pin holes and pins.

[0058] Thus, the two ends of the main leaf of the leaf spring 32 are bent into shackles 321 for installing the leaf spring pins. The main leaf shackles are subjected to relatively large forces, and stress will be generated at the bending and deforming parts after the shackles are formed, greatly improving the service life of the leaf spring 32 and the driving safety of the semi - trailer. It has a simple structure and is convenient for disassembly and assembly.

[0059] Further, please refer to Figure 1 、 7 As shown, the support leg 4 includes an outer leg 41, a lifting inner leg 42, a lead screw, a bearing seat, and a driving mechanism. The lifting inner leg 42 can be telescopically moved up and down within the outer leg 41. The lead screw connects the outer leg 41 and the lifting inner leg 42, and the lead screw is respectively clamped with a bushing fixed inside the lifting inner leg 42, a nut, and a bearing seat installed on the inner side of the outer leg 41. A driving mechanism is installed around the upper end of the lead screw of the bearing seat.

[0060] When the semi-trailer's outrigger 4 is needed, the folding foot is first opened, the lead screw is driven to rotate by the driving mechanism, the lead screw drives the bearing to rotate, the bearing drives the nut to rotate, the nut drives the sleeve to move downward, and the sleeve drives the lifting inner leg 42 welded thereto to move downward until the required position is met. Due to the tight wrapping effect of the outer leg 41 and the sleeve on the lifting inner leg 42, the lifting inner leg 42 will only extend and retract up and down, and will not move left and right. When the semi-trailer's outrigger 4 needs to be retracted, the lifting inner leg 42 can be retracted.

[0061] Furthermore, in this embodiment, the driving mechanism is a driving motor or a manual mechanical type, so that the operation mode can be adjusted according to the actual application scenario.

[0062] For further information, see Figure 4 , 5 As shown, the tank body heat insulation assembly 61 includes a tin foil layer and a skin insulation layer which are sequentially coated on the outer surface of the metal tank body 2.

[0063] Specifically in this embodiment, the tank body insulation assembly 61 includes a tin foil layer and a skin insulation layer, and the tin foil layer and the skin insulation layer are sequentially coated on the outer surface of the metal tank body 2.

[0064] For further information, see Figure 4 , 6 As shown, the fifth wheel heat insulation assembly 62 includes a first nano-thermal insulation coating and a first thermal insulation gasket, wherein the first nano-thermal insulation coating is coated on the outer surface of the fifth wheel connecting plate 22, and the first thermal insulation gasket is laid between the fifth wheel 5 and the fifth wheel connecting plate 22.

[0065] Considering that the metal tank body 2 contains high-temperature saturated water vapor, an insulating layer is used in the gap between the traction seat connecting plate 22 and the metal tank body 2. This insulating material can effectively isolate the heat conduction between the tank body and the traction seat connecting plate 22. The outer surface of the traction seat connecting plate 22 adopts a 6mm thick nano-insulation coating to effectively block heat conduction.

[0066] Specifically in this embodiment, the saturated water vapor transport semi-trailer also includes a traction seat connecting plate 22 arranged at the bottom of the metal tank body 2, and a first insulating gasket is laid between the traction seat 5 and the traction seat connecting plate 22 for heat insulation treatment.

[0067] In addition, the vehicle wiring harness is passed through the wiring harness casing, and the wiring harness casing passes through the traction seat connecting plate 22. For this reason, an insulating layer is used at the contact point between the wiring harness casing and the traction seat connecting plate 22 to prevent the wiring harness from being damaged by high temperature and avoid safety hazards during transportation or storage.

[0068] Similarly, the outrigger heat insulation assembly 63 includes a second nano thermal insulation coating and a second heat insulation gasket. The second nano thermal insulation coating is coated on the outer surface of the tank support 21, and the second heat insulation gasket is laid between the tank support 21 and the outrigger 4.

[0069] Please refer to Figure 7 As shown, by installing the second heat insulation gasket at the connection between the tank support 21 and the outrigger 4, heat transfer can also be effectively blocked, reducing heat loss.

[0070] Furthermore, please refer to Figure 7 As shown, the tank support 21 and the outrigger 4 are fixedly connected by a second bolt, and the second heat insulation gasket is clamped on the side where the tank support 21 and the outrigger 4 are in contact with each other.

[0071] Since the tank support 21 and the outrigger 4 are connected by a second bolt, the second heat insulation gasket is threaded on the second bolt and can effectively isolate the contact between the tank support 21 and the outrigger 4, reducing heat transfer.

[0072] Furthermore, in this embodiment, the tank support heat insulation assembly 64 includes a third nano thermal insulation coating and a second heat insulation gasket. The third nano thermal insulation coating is coated on the outer surface of the tank support 21, and the second heat insulation gasket is installed between the tank support 21 and the walking mechanism girder 11.

[0073] Specifically, both the tank support 21 and the walking mechanism girder 11 in this embodiment are suitable for metal parts. The tank support 21 and the walking mechanism girder 11 are fixedly connected by a first bolt and a bolt gasket, and the second heat insulation gasket is clamped between the two bolt gaskets. During the connection process, if the second heat insulation gasket is installed at the connection, heat transfer can surely be effectively blocked, reducing heat loss.

[0074] In addition, the first heat insulation layer is coated on the outer surface of the tank support 21 to achieve heat insulation treatment. Preferably, the thickness of the first heat insulation layer is preferably 6 mm. On the basis of reducing the heat energy loss during transportation or storage by more than 90%, the material cost can also be reduced.

[0075] Furthermore, please refer to Figure 1 As shown, the metal tank 2 is a load-bearing steel welded structure with a cylindrical cross-section, and a drain hole with a diameter of Φ450 mm is opened in the center of the front head of the metal tank 2.

[0076] In some embodiments, both the first nano thermal insulation coating and the second nano thermal insulation coating are made of rock wool.

[0077] In other embodiments, the materials used for the first nano thermal insulation coating and the second nano thermal insulation coating can also be selected as aluminosilicate, which can also effectively isolate heat transfer.

[0078] Compared with aluminosilicate materials, the rock wool in this embodiment is not only convenient to obtain materials, but also has a relatively low price cost and is widely used.

[0079] Further, in some embodiments, it further includes a pipeline ball valve heat insulation assembly, and the pipeline ball valve heat insulation assembly includes a heat preservation shield and a third nano heat preservation coating provided outside the pipeline ball valve.

[0080] In addition, to further improve the heat insulation and heat preservation effect, heat preservation shields are put on the support legs 4, the tank body support 21 and the pipeline ball valve.

[0081] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A saturated steam transport semitrailer, characterized in that: include: The chassis (1) comprises a walking mechanism main beam (11) and a walking mechanism auxiliary beam (12) which are horizontally connected to each other and have a central symmetric axis; A metal tank body (2), wherein the tail portion of the metal tank body (2) is connected to the upper surface of the traveling mechanism beam (11) via a plurality of tank body supports (21), a traction seat connecting plate (22) is connected to the middle portion of the metal tank body (2), and one end of the traveling mechanism sub-beam (12) is connected to the traction seat connecting plate (22), and the other end is connected to the traveling mechanism beam (11); A walking mechanism (3) is arranged below the walking mechanism beam (11); A support leg (4) adapted to be vertically supported and connected to the bottom of the fifth wheel connection plate (22); A traction seat (5) is connected to the lower part of the head of the metal tank (2), and the traction seat (5) is suitable for being hooked on the trailer of a power truck; The heat insulation structure (6) comprises a tank body heat insulation component (61) covering the outer surface of the metal tank body (2), a traction seat heat insulation component (62) connected between the traction seat connection plate (22) and the traction seat (5), a leg heat insulation component (63) connected between the tank body support (21) and the support leg (4), and a tank body support heat insulation component (64) covering the outer surface of the tank body support (21).

2. The saturated steam transport semitrailer according to claim 1, characterized in that: The traction seat connecting plate (22) comprises a traction plate (221) located transversely and vertically directly below the metal tank body (2) and wing plates (222) located on both sides of the traction plate (221); one end of the wing plate (222) is connected to the traction plate (221), and the other end is suitable for matching and connecting to the lower surface of the metal tank body (2).

3. The saturated steam transport semitrailer according to claim 1 or 2, characterized in that: The walking mechanism (3) comprises a suspension bracket (31), a leaf spring (32), a universal rod (33), a first lifting ear (34) installed at the bottom of the suspension bracket (31), and a second lifting ear (35) connected to the side of the leaf spring (32) close to the first lifting ear (34); the leaf spring (32) is connected to the axle (37) through a wheel (36), and the front end of the leaf spring (32) is hinged to the suspension bracket (31), and the rear end of the leaf spring (32) is slidably connected to the suspension bracket (31); the front end of the universal rod (33) is connected to the first lifting ear (34), and the rear end of the universal rod (33) is connected to the second lifting ear (35).

4. The saturated steam transport semitrailer according to claim 3, characterized in that: The two ends of the leaf spring (32) are provided with ears (321), and bushings are embedded in the ears (321). The hinge plate (311) of the suspension bracket (31) is provided with a pin hole, and the two ends of the leaf spring (32) are hinged to the suspension bracket (31) through the pin hole and the pin.

5. The saturated steam transport semitrailer according to claim 1, characterized in that: The support leg (4) comprises an outer leg (41), a lifting inner leg (42) which can be extended and retracted up and down in the outer leg (41), and a lead screw connecting the outer leg (41) and the lifting inner leg (42); the lead screw is respectively engaged with a sleeve and a nut fixed in the lifting inner leg (42) and a bearing seat installed on the inner side of the outer leg (41); and a driving mechanism is installed around the lead screw at the upper end of the bearing seat.

6. The saturated steam transport semitrailer according to claim 5, characterized in that: The driving mechanism is a driving motor or a manual mechanical type.

7. The saturated steam transport semitrailer according to claim 1, characterized in that: The tank body heat insulation assembly (61) comprises a tin foil layer and a skin insulation layer which are sequentially coated on the outer surface of the metal tank body (2).

8. The saturated steam transport semitrailer according to claim 1, characterized in that: The fifth wheel heat insulation assembly (62) comprises a first nano thermal insulation coating coated on the outer surface of the fifth wheel connection plate (22) and a first thermal insulation gasket laid between the fifth wheel (5) and the fifth wheel connection plate (22); The support leg heat insulation assembly (63) comprises a second nano thermal insulation coating coated on the outer surface of the tank support (21) and a second thermal insulation gasket laid between the tank support (21) and the support leg (4).

9. The saturated steam transport semitrailer according to claim 1, characterized in that: The tank support heat insulation component (64) comprises a third nano thermal insulation coating coated on the outer surface of the tank support (21), a first thermal insulation layer wrapped around the outside of the tank support (21), and a third thermal insulation gasket installed between the tank support (21) and the walking mechanism beam (11).

10. The saturated steam transport semitrailer according to claim 1, characterized in that: The metal tank body (2) is a load-bearing steel welded structure with a cylindrical cross-section, and a Φ450 mm leak hole is provided in the middle of the front head of the metal tank body (2).

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