Door frame device and insulated railway truck

Abstract

A door frame device and an insulated railway truck. The door frame device comprises: a support door frame (10), which is connected to a truck body; a force-bearing door frame (20), which is connected to the truck body and is spaced apart from the support door frame (10); and a heat insulation door frame (30), which is arranged between the support door frame (10) and the force-bearing door frame (20) and is connected to the support door frame (10) and the force-bearing door frame (20).

Description

Door frame device and railway insulation car

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310917036.5 filed on July 25, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of railway transportation, and in particular to a door frame device and a railway insulation vehicle. Background Art

[0004] Railway insulated cars are a type of "specialized freight car." They are designed for transporting perishable goods such as meat, fish, fresh fruits, and vegetables. These goods require consistent temperature, humidity, and ventilation during transportation. To prevent significant temperature fluctuations inside the car due to external temperature fluctuations, the car body must have good thermal insulation. The car body is insulated to minimize heat transfer between the interior and exterior. The car is equipped with cooling and heating devices to maintain optimal temperature and humidity, ventilation, and temperature measurement.

[0005] To facilitate cargo loading and unloading, railway insulated cars generally use plug-sliding doors. A plug-sliding door is a type of door that opens and closes by both plugging and pulling. To close the door, the door is pushed into the door opening from inside or outside the car to close it. To open the door, the door is moved a certain distance inward or outward from the door opening, then slid along the inside or outside of the car to open.

[0006] To facilitate the closing of the plug door, a door frame structure is provided on the body of the railway insulated car. However, in the prior art, the door frame structure of the railway insulated car cannot provide heat insulation, and the energy inside the car body is conducted out through the door frame structure, resulting in energy loss inside the car body and affecting the insulation effect of the railway insulated car.

[0007] Summary of the Invention

[0008] In order to solve the above technical problems, the present disclosure provides a door frame device and a railway insulated car, which aims to at least solve to a certain extent the technical problem that the door frame structure of the railway insulated car cannot be insulated, the energy in the car body will be conducted out through the door frame structure, resulting in energy loss in the car body, and affecting the insulation effect of the railway insulated car.

[0009] According to some embodiments of the present disclosure, a door frame device is provided, including: a supporting door frame connected to a vehicle body; a load-bearing door frame connected to the vehicle body, the load-bearing door frame and the supporting door frame being spaced apart; and an insulating door frame arranged between the supporting door frame and the load-bearing door frame, and connected to the supporting door frame and the load-bearing door frame.

[0010] According to some embodiments of the present disclosure, a railway insulated car is further provided, comprising a car body, car doors and the door frame device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0012] FIG1 is a schematic structural diagram of a door frame device according to some embodiments of the present disclosure;

[0013] FIG2 is an exploded view of the door frame assembly in FIG1 ;

[0014] FIG3 is a schematic diagram showing the connection between the supporting door frame, the insulating door frame and the load-bearing door frame of the door frame device in FIG1 ;

[0015] FIG4 is a schematic diagram illustrating the arrangement of a first seal and a second seal of a railway insulated vehicle according to some embodiments of the present disclosure.

[0016] Figure numerals: 10, supporting door frame; 101, second crossbeam; 102, third crossbeam; 103, second column; 104, third column; 20, load-bearing door frame; 201, fourth crossbeam; 202, fifth crossbeam; 203, fourth column; 204, fifth column; 205, first connecting member; 206, second connecting member; 30, heat-insulating door frame; 301, heat-insulating frame; 3011, first crossbeam; 3012, first column; 302, supporting frame; 40, reinforcement; 50, third connecting member; 60, armrest; 70, vehicle door; 80, first sealing member; 801, first connecting portion; 802, first sealing portion; 90, second sealing member; 901, second connecting portion; 902, second sealing portion. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0018] It should be noted that all directional indications in the embodiments of the present disclosure are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0019] In this disclosure, unless otherwise expressly specified or limited, the terms "connect," "fix," etc. should be understood in a broad sense. For example, "fix" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements, unless otherwise expressly specified. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0020] In addition, in the present disclosure, descriptions such as "first" and "second" are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present disclosure.

[0021] To allow the handset to be moved after installation in the main unit, allowing for changes in usage scenarios, the handset is detachably mounted within the main unit. When the handset is needed for a different scenario, it can simply be removed from the main unit. However, when the handset is installed within the main unit, a plug-in connection similar to a terminal block is typically used to achieve an electrical connection between the two. However, this plug-in connection requires high positioning during handset resetting, resulting in low error tolerance and making it difficult to reposition the handset.

[0022] The indoor unit and railway insulated vehicle provided by the embodiments of the present disclosure can improve the above-mentioned problems. The indoor unit and railway insulated vehicle provided by the embodiments of the present disclosure are intended to at least to some extent solve the technical problem that after the sub-unit is installed on the main unit, it cannot be easily moved and the use scenario of the sub-unit cannot be changed.

[0023] The technical solution of the present disclosure will be described below with reference to the accompanying drawings and specific embodiments.

[0024] An interior door frame device and a railway refrigerator car provided by an embodiment of the present disclosure aim to at least solve, to a certain extent, the technical problem that the door frame structure of a railway refrigerator car cannot be heat-insulated, and the energy inside the car body is conducted out through the door frame structure, resulting in energy loss inside the car body and affecting the heat preservation effect of the railway refrigerator car.

[0025] FIG. 1 is a schematic structural diagram of an interior door frame device according to some embodiments of the present disclosure; FIG. 2 is an exploded view of the interior door frame device in FIG. 1. With reference to FIG. 1 and FIG. 2, the interior door frame device according to some embodiments of the present disclosure includes: a support door frame 10, a load-bearing door frame 20, and a heat-insulating door frame 30. The support door frame 10 is connected to the car body. The load-bearing door frame 20 is connected to the car body, and the load-bearing door frame 20 is arranged at an interval from the support door frame 10. The heat-insulating door frame 30 is arranged between the support door frame 10 and the load-bearing door frame 20 and is connected to the support door frame 10 and the load-bearing door frame 20.

[0026] The cross-sectional shapes of the support door frame 10, the load-bearing door frame 20, and the heat-insulating door frame 30 are all in the shape of a "mouth".

[0027] The support door frame 10 is arranged inside the car body, and the load-bearing door frame 20 is arranged outside the car body.

[0028] Since the support door frame 10 is connected to the car body, the support door frame 10 is supported by the car body. Since the load-bearing door frame 20 is connected to the car body and the load-bearing door frame 20 is arranged at an interval from the support door frame 10, the load-bearing door frame 20 is supported by the car body, and there is a distance between the load-bearing door frame 20 and the support door frame 10 to provide a space for installing the heat-insulating door frame 30. Since the heat-insulating door frame 30 is arranged between the support door frame 10 and the load-bearing door frame 20 and is connected to the support door frame 10 and the load-bearing door frame 20, the heat-insulating door frame 30 is supported by the support door frame 10 and the load-bearing door frame 20, forming a connection structure of three layers of door frames. The heat-insulating door frame 30 can be heat-insulated, avoiding the heat transfer between the inside and outside of the railway refrigerator car body, avoiding the heat bridge effect, and effectively preventing heat leakage.

[0029] Since the support door frame 10 is arranged inside the railway refrigerator car body, that is, the support door frame 10 is arranged in the heat preservation space inside the car body, the support door frame 10 will come into contact with moisture, resulting in corrosion of the support door frame 10. In some embodiments, in order to ensure the service life of the support door frame 10, the material of the support door frame 10 can be one of aluminum alloy, magnesium alloy, titanium alloy, and stainless steel, which can avoid corrosion of the support door frame 10 while ensuring the structural strength of the support door frame 10.

[0030] In conjunction with Figure 2, in some embodiments, in order to achieve the heat insulation effect of the heat insulation door frame 30, the heat insulation door frame 30 includes: a heat insulation frame 301 and a support frame 302. The heat insulation frame 301 is connected to the supporting door frame 10 and the load-bearing door frame 20, and the heat insulation frame 301 is supported by the supporting door frame 10 and the load-bearing door frame 20. The supporting door frame 10 and the load-bearing door frame 20 are separated by the heat insulation frame 301, and the heat insulation is provided by the heat insulation frame 301 to prevent the inside and outside of the railway insulated car from being connected and heat transferred. The support frame 302 is connected to the heat insulation frame 301 and is provided at the bottom of the heat insulation frame 301. The heat insulation frame 301 can have a U-shaped cross-section.

[0031] In some embodiments, the heat insulating frame 301 can be made of glass fiber reinforced plastic or asbestos to insulate the heat insulating frame 301. In some embodiments, the heat insulating frame 301 can be made of glass fiber reinforced plastic, which has good heat insulating properties while ensuring strength.

[0032] In some embodiments, since the support frame 302 is located at the bottom of the insulation frame 301, a forklift is required to transport cargo into the insulated railway vehicle. This means that the forklift will run over the support frame 302 during its operation. To ensure the structural strength of the support frame 302, the support frame 302 can be made of stainless steel, aluminum alloy, or other materials. Stainless steel and aluminum alloys are corrosion-resistant, ensuring the service life of the support frame 302, and are also strong enough to withstand forklift pressure.

[0033] 2 , in some embodiments, to ensure the structural strength of the support frame 302, a plurality of reinforcement members 40 are provided on the end surface of the load-bearing door frame 20 facing the support door frame 10. The support frame 302 is provided on the plurality of reinforcement members 40. The plurality of reinforcement members 40 support the support frame 302, thereby increasing the strength of the support frame 302, enabling the support frame 302 to withstand the crushing operation of a forklift, and ensuring the service life of the support frame 302. The reinforcement members 40 may be rib plates.

[0034] In some embodiments, in order to ensure that the multiple reinforcement members 40 are evenly stressed, the multiple reinforcement members 40 are arranged at equal intervals on the end surface of the load-bearing door frame 20 facing the supporting door frame 10 .

[0035] 2 , in some embodiments, to achieve thermal insulation, the thermal insulation frame 301 may include a first crossbeam 3011 and two first upright posts 3012. The first crossbeam 3011 is connected to the supporting door frame 10 and the load-bearing door frame 20. The first crossbeam 3011 is disposed between the supporting door frame 10 and the load-bearing door frame 20, and is supported by the supporting door frame 10 and the load-bearing door frame 20. The two first upright posts 3012 are disposed at both ends of the first crossbeam 3011 and are connected to the supporting frame 302. The supporting frame 302 supports the two first upright posts 3012, and the two first upright posts 3012 support the first crossbeam 3011.

[0036] In some embodiments, in order to ensure the connection strength between the first crossbeam 3011 and the two first upright posts 3012 , the first crossbeam 3011 and the two first upright posts 3012 may be integrally formed.

[0037] 2 , in some embodiments, the supporting door frame 10 may include a second crossbeam 101, a third crossbeam 102, a second column 103, and a third column 104. The second crossbeam 101 is connected to the side of the thermal insulation door frame 30 facing away from the load-bearing door frame 20. The second crossbeam 101 is connected to the side of the first crossbeam 3011 of the thermal insulation door frame 30 facing away from the load-bearing door frame 20. The third crossbeam 102 is opposite the second crossbeam 101. The second column 103 is connected to the second crossbeam 101 and the third crossbeam 102 at both ends, and the second column 103 is connected to the side of the thermal insulation door frame 30 facing away from the load-bearing door frame 20. The second column 103 is connected to the side of one of the two first columns 3012 of the thermal insulation door frame 30 facing away from the load-bearing door frame 20. The third column 104 is opposite to the second column 103. The ends of the third column 104 are connected to the second crossbeam 101 and the third crossbeam 102, respectively. The third column 104 is connected to the side of the heat-insulating door frame 30 that faces away from the load-bearing door frame 20. The third column 104 is connected to the side of the other of the two first columns 3012 of the heat-insulating door frame 30 that faces away from the load-bearing door frame 20.

[0038] With reference to FIG2 , in some embodiments, the load-bearing door frame 20 may include: a fourth crossbeam 201, a fifth crossbeam 202, a fourth column 203, and a fifth column 204. The fourth crossbeam 201 is connected to the side of the thermal insulation door frame 30 facing away from the supporting door frame 10. The fourth crossbeam 201 is connected to the side of the first crossbeam 3011 of the thermal insulation door frame 30 facing away from the supporting door frame 10. The fifth crossbeam 202 opposes the fourth crossbeam 201. A plurality of reinforcement members 40 are located on the end surface of the fifth crossbeam 202 facing the supporting door frame 10. The fourth column 203 is connected to the fourth crossbeam 201 and the fifth crossbeam 202 at both ends, respectively. The fourth column 203 is connected to the side of the thermal insulation door frame 30 facing away from the supporting door frame 10. The fourth column 203 is connected to the side of one of the two first columns 3012 of the thermal insulation door frame 30 facing away from the supporting door frame 10. The fifth column 204 is opposite the fourth column 203. Its ends are connected to the fourth crossbeam 201 and the fifth crossbeam 202, respectively. The fifth column 204 is connected to the side of the heat-insulating door frame 30 that faces away from the door frame 10. The fifth column 204 is connected to the other of the two first columns 3012 of the heat-insulating door frame 30 that faces away from the door frame 10.

[0039] In some embodiments, since the load-bearing door frame 20 supports the heat-insulating door frame 30, and a forklift is required for transportation when transporting goods into the body of the railway insulation vehicle, that is, when the forklift is moving, it will press over the fifth crossbeam 202 of the load-bearing door frame 20. In order to ensure the structural strength of the load-bearing door frame 20, the material of the load-bearing door frame 20 can be steel, etc., which has high strength and can withstand the crushing operation of the forklift.

[0040] FIG3 is a schematic diagram illustrating the connection between the supporting door frame, the heat-insulating door frame, and the load-bearing door frame of the door frame assembly shown in FIG1 . In conjunction with FIG3 , in some embodiments, to facilitate the connection between the heat-insulating door frame 30 and the load-bearing door frame 20, a first connecting member 205 is provided on the fourth column 203. The first connecting member 205 is connected to the side of the heat-insulating door frame 30 facing away from the supporting door frame 10. The first connecting member 205 is connected to the side of one of the two first columns 3012 of the heat-insulating door frame 30 facing away from the supporting door frame 10. The fifth column 204 is provided with a second connecting member 206. The second connecting member 206 is connected to the side of the heat-insulating door frame 30 facing away from the supporting door frame 10. The second connecting member 206 is connected to the side of the other of the two first columns 3012 of the heat-insulating door frame 30 facing away from the supporting door frame 10. The first connecting member 205 and the second connecting member 206 may be iron stops.

[0041] 3 , in some embodiments, the heat-insulating door frame 30 is connected to the fourth column 203 via a first connector 205 , and the fifth column 204 is connected to the heat-insulating door frame 30 via a second connector 206 . This not only facilitates the connection between the heat-insulating door frame 30 and the load-bearing door frame 20 , but also ensures the overall structural strength of the door frame assembly.

[0042] In some embodiments, the first connecting member 205 may be welded to the fourth column 203 , and the second connecting member 206 may be welded to the fifth column 204 .

[0043] In some embodiments, the first connector 205 can be connected to the side of the thermal insulation door frame 30 away from the supporting door frame 10 by bolting or riveting. The second connector 206 can be connected to the side of the thermal insulation door frame 30 away from the supporting door frame 10 by bolting or riveting.

[0044] 3 , in some embodiments, to ensure the overall structural strength of the door frame assembly, the door frame assembly further includes two third connectors 50 , one of which is connected to one side of the supporting door frame 10 and one side of the load-bearing door frame 20 , and the other of which is connected to the other side of the supporting door frame 10 and the other side of the load-bearing door frame 20 , thereby connecting the supporting door frame 10 and the load-bearing door frame 20 together and improving the overall structural strength of the door frame assembly. The third connector 50 may be a connecting plate.

[0045] In some embodiments, to ensure thermal insulation, a first thermal insulator is provided between the third connector 50 and the supporting door frame 10, and a second thermal insulator is provided between the third connector 50 and the load-bearing door frame 20. This prevents heat from within the insulated railway car from being transferred through the supporting door frame 10 to the load-bearing door frame 20, thereby preventing heat transfer between the interior and exterior of the insulated railway car. This also avoids thermal bridge effects and effectively prevents heat leakage. The first and second thermal insulators can be made of rubber.

[0046] In conjunction with Figures 1 and 2 , in some embodiments, to facilitate entry into the vehicle body of the railway insulated vehicle, a handrail 60 is provided on the end surface of the load-bearing door frame 20 facing away from the supporting door frame 10. The operator can grasp the handrail 60 to enter the vehicle body of the railway insulated vehicle. The number of handrails 60 can be two, and the two handrails 60 are respectively provided on the end surfaces of the fourth column 203 and the fifth column 204 of the load-bearing door frame 20 facing away from the supporting door frame 10.

[0047] According to some embodiments of the present disclosure, a railway insulated car is also provided, comprising a car body, a car door, and the aforementioned door frame device. The railway insulated car employs the aforementioned door frame device, the specific structure of which is similar to that of the aforementioned embodiments. Since the entire technical solution of all the aforementioned embodiments is employed, the door frame device exhibits at least all the beneficial effects of the aforementioned technical solutions, which will not be further detailed here.

[0048] In some embodiments, the railway insulated car further includes a car body and a car door 70 , wherein a door frame device is provided on the car body, and the car door 70 may be provided in the door frame device.

[0049] Figure 4 is a schematic diagram illustrating the arrangement of the first and second seals of a railway insulated vehicle according to some embodiments of the present disclosure. In conjunction with Figure 4 , in some embodiments, to ensure the sealing effect of the door frame assembly, a first seal 80 is provided at one of the ends of the vehicle door 70 and the thermal insulation door frame 30 facing the load-bearing door frame 20, and a second seal 90 is provided at one of the ends of the vehicle door 70 and the thermal insulation door frame 30 facing away from the load-bearing door frame 20. The first seal 80 forms a primary seal to prevent rainwater, while the second seal 90 forms a secondary seal to prevent air leakage. The first and second seals 80 and 90 form a double-layer sealing structure, ensuring a sealing effect. The first and second seals 80 and 90 can be made of rubber.

[0050] In some embodiments, the vehicle door 70 may be provided with a first seal 80. In other embodiments, the first seal 80 may be provided at the end of the thermally insulating door frame 30 facing the load-bearing door frame 20. However, to facilitate installation of the first seal 80, the vehicle door 70 may be provided with two first seals 80, one on each side of the vehicle door 70.

[0051] In some embodiments, the vehicle door 70 may be provided with a second seal 90. In other embodiments, the second seal 90 may be provided at the end of the thermally insulating door frame 30 facing away from the load-bearing door frame 20. However, to facilitate installation of the second seal 90, the vehicle door 70 may be provided with two second seals 90, one on each side of the vehicle door 70.

[0052] 4 , in some embodiments, to protect against rainwater, the first sealing member 80 may include a first connecting portion 801 and a first sealing portion 802. The first connecting portion 801 is connected to the end of the vehicle door 70 or the heat-insulating door frame 30 that faces the load-bearing door frame 20. The first sealing portion 802 is connected to the first connecting portion 801. The first sealing portion 802 has an annular cross-section, and its outer diameter is greater than the distance between the vehicle door 70 and the heat-insulating door frame 30.

[0053] In some embodiments, when the door is to be closed, that is, when the vehicle door 70 is arranged in the door frame device, the first sealing portion 802 conflicts with the end of the vehicle door 70 or the heat-insulating door frame 30 toward the load-bearing door frame 20 to achieve sealing and prevent rainwater from entering the vehicle body, thereby achieving rainproofing.

[0054] 4 , in some embodiments, to prevent air leakage, the second sealing member 90 may include a second connecting portion 901 and a second sealing portion 902. The second connecting portion 901 is connected to the end of the vehicle door 70 or the thermal insulation door frame 30 facing away from the load-bearing door frame 20. The second sealing portion 902 is connected to the second connecting portion 901. The cross-section of the second sealing portion 902 is strip-shaped, and the length of the second sealing portion 902 is greater than the distance between the vehicle door 70 and the thermal insulation door frame 30.

[0055] In some embodiments, when the door is to be closed, that is, when the vehicle door 70 is arranged in the door frame device, the second sealing portion 902 contacts the end of the vehicle door 70 or the heat-insulating door frame 30 away from the load-bearing door frame 20 to achieve sealing and avoid gas leakage in the vehicle body to achieve air leakage prevention.

[0056] In some embodiments, the vehicle body may include a chassis, side walls, and a roof inner panel. The supporting door frame 10 is connected to the chassis, side walls, and roof inner panel to support the supporting door frame 10. The load-bearing door frame 20 is connected to the chassis, side walls, and roof inner panel to support the load-bearing door frame 20.

[0057] In some embodiments, the second cross beam 101 supporting the door frame 10 is connected to the base frame, the second column 103 and the third column 104 supporting the door frame 10 are connected to the side wall, and the third cross beam 102 supporting the door frame 10 is connected to the roof inner panel to support the door frame 10 and can be used for support during secondary foaming.

[0058] In some embodiments, the fourth cross beam 201 of the load-bearing door frame 20 is connected to the base frame, the fourth column 203 and the fifth column 206 of the load-bearing door frame 20 are connected to the side wall, and the fifth cross beam 202 of the load-bearing door frame 20 is connected to the inner panel of the roof to support the load-bearing door frame 20.

[0059] The beneficial effects of the technical solutions according to some embodiments of the present disclosure include at least: the supporting door frame is connected to the car body, and the supporting door frame is supported by the car body. The load-bearing door frame is connected to the car body, and the load-bearing door frame and the supporting door frame are spaced apart. The load-bearing door frame is supported by the car body, and there is a spacing between the load-bearing door frame and the supporting door frame to provide space for installing the heat-insulating door frame. Since the heat-insulating door frame is arranged between the supporting door frame and the load-bearing door frame, and is connected to the supporting door frame and the load-bearing door frame, a three-layer door frame connection structure is formed by supporting the heat-insulating door frame and the load-bearing door frame. The heat-insulating door frame can be insulated to avoid heat transfer between the inside and outside of the car body of the railway insulated car, avoid the thermal bridge effect, and effectively prevent heat leakage. In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0060] In the description of the present disclosure, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0062] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0063] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A door frame device, comprising: Support door frame and connect with vehicle body; A load-bearing door frame connected to the vehicle body, wherein the load-bearing door frame is spaced apart from the supporting door frame; as well as The heat-insulating door frame is arranged between the supporting door frame and the load-bearing door frame, and is connected to the supporting door frame and the load-bearing door frame.

2. The door frame device according to claim 1, wherein: The heat-insulating door frame comprises: A heat-insulating frame connected to the supporting door frame and the load-bearing door frame; and The supporting frame is connected to the heat-insulating frame and is arranged at the bottom of the heat-insulating frame.

3. The door frame device according to claim 2, wherein: A plurality of reinforcing members are arranged on the end surface of the load-bearing door frame facing the supporting door frame, and the supporting frame edge is arranged on the plurality of reinforcing members.

4. The door frame device according to claim 2, wherein: The heat-insulating frame comprises: A first crossbeam connected to the supporting door frame and the load-bearing door frame; and Two first upright columns are respectively arranged at two ends of the first crossbeam and connected to the supporting frame.

5. The door frame device according to any one of claims 1 to 4, wherein: The supporting door frame comprises: A second crossbeam connected to a side of the heat-insulating door frame facing away from the load-bearing door frame; a third crossbeam, opposite to the second crossbeam; A second column, two ends of which are respectively connected to the second crossbeam and the third crossbeam, and the second column is connected to a side of the heat-insulating door frame away from the load-bearing door frame; and The third column is opposite to the second column, and both ends of the third column are respectively connected to the second beam and the third beam. The third column is connected to the side of the heat-insulating door frame away from the load-bearing door frame.

6. The door frame device according to any one of claims 1 to 4, wherein: The load-bearing door frame comprises: a fourth crossbeam connected to a side of the heat-insulating door frame facing away from the supporting door frame; a fifth crossbeam, opposite to the fourth crossbeam; a fourth column, two ends of which are respectively connected to the fourth crossbeam and the fifth crossbeam, and the fourth column is connected to a side of the heat-insulating door frame away from the supporting door frame; and The fifth column is opposite to the fourth column, and both ends of the fifth column are respectively connected to the fourth cross beam and the fifth cross beam, and the fifth column is connected to the side of the heat-insulating door frame away from the supporting door frame.

7. The door frame device according to claim 6, wherein: The fourth column is provided with a first connecting member, and the first connecting member is connected to the side of the heat-insulating door frame away from the supporting door frame; The fifth column is provided with a second connecting member, and the second connecting member is connected to the side of the heat-insulating door frame facing away from the supporting door frame.

8. The door frame device according to any one of claims 1-4 further includes two third connecting members, one of the two third connecting members is connected to one side of the supporting door frame and one side of the load-bearing door frame, and the other of the two third connecting members is connected to the other side of the supporting door frame and the other side of the load-bearing door frame.

9. The door frame device according to claim 8, wherein: A first heat insulating member is provided between the third connecting member and the supporting door frame, and a second heat insulating member is provided between the third connecting member and the load-bearing door frame.

10. The door frame device according to any one of claims 1 to 4, wherein: A handrail is arranged on the end surface of the load-bearing door frame away from the supporting door frame.

11. A railway insulated car, comprising a car body, a car door and a door frame device according to any one of claims 1 to 10.

12. The road insulation vehicle according to claim 11, wherein: One of the ends of the vehicle door and the heat-insulating door frame facing the load-bearing door frame is provided with a first seal, and one of the ends of the vehicle door and the heat-insulating door frame facing away from the load-bearing door frame is provided with a second seal.

13. The road insulation vehicle according to claim 12, wherein: The first sealing member comprises: A first connecting portion connected to an end of the vehicle door or the heat-insulating door frame facing the load-bearing door frame; and The first sealing portion is connected to the first connecting portion. The cross-sectional shape of the first sealing portion is annular. The outer diameter of the first sealing portion is greater than the distance between the vehicle door and the heat-insulating door frame.

14. The road insulation vehicle according to claim 12, wherein: The second sealing member comprises: A second connecting portion connected to an end of the vehicle door or the heat-insulating door frame facing away from the load-bearing door frame; and The second sealing portion is connected to the second connecting portion. The cross-sectional shape of the second sealing portion is a strip. The length of the second sealing portion is greater than the distance between the vehicle door and the heat-insulating door frame.

15. The road insulation vehicle according to claim 11, wherein: The vehicle body comprises a chassis, side walls and a roof inner panel; The supporting door frame is connected to the base frame, the side wall and the roof inner panel; The load-bearing door frame is connected to the base frame, the side walls and the roof inner panel.

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