Electric transport flatcar

Abstract

The utility model discloses an electric transport flatcar, which relates to the technical field of steel box girder transport and comprises a double-layer frame. The at least two steering mechanisms are mounted at the bottom of the double-layer frame in parallel at intervals; the double-layer frame comprises a bottom frame; the lifting assemblies are vertically installed at the four corners of the bottom frame at intervals. The lifting platform is installed at the top of the lifting assembly, and peripheral beams are arranged on the periphery of the lifting platform and located on the outer side of the bottom frame; the steering mechanism comprises at least two driving assemblies which are arranged in a spaced mode. Two ends of the connecting rod assembly are respectively matched and connected with the driving assembly; one end of the steering oil cylinder is hinged to any driving assembly, and the other end is hinged to the bottom of the bottom frame. The electric transport flatcar solves the technical problem that an existing electric transport flatcar is not enough in adaptability to the transport environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel box girder transportation technical field especially electric transport flatcar. BACKGROUND

[0002] The steel structural member of company factory area is huge in the quantity of rehandling, because the processing and installation of steel structural member usually need to be carried out according to specific order, therefore rehandling can ensure that the component is used at correct time and position, avoids the construction delay or quality problem caused by order error, and simultaneously the rehandling of steel structural member is convenient for entering suitable site, and is convenient for subsequent processing.

[0003] The existing transportation mode usually stores steel structural member on horse stool, then transports through corresponding vehicle, for example adopts conventional fuel oil beam car to transport, and the working task of beam car is huge, needs to use frequently for a long time, leads to the aggravation of equipment damage, high maintenance cost, and the beam car uses diesel as energy, and oil consumption is high, is not economic and is not conducive to environmental protection. According to statistics, the annual maintenance cost of beam car is about 2.8 million yuan, and the annual oil cost of beam car is about 2.2 million yuan, so the economic efficiency of using beam car to transport conventional rod piece is extremely poor. Some manufacturers also design electric flatcar, but the overall height of this electric flatcar is higher, and it cannot adapt to the road surface well, so the adaptability is not enough. SUMMARY

[0004] The utility model discloses an electric transport flatcar, which solves the technical problem of insufficient adaptability of the electric transport flatcar in the prior art.

[0005] The electric transport flatcar disclosed by the embodiments of the present application comprises:

[0006] A double-layer frame;

[0007] At least two steering mechanisms are installed in parallel and at intervals at the bottom of the double-layer frame;

[0008] The double-layer frame comprises:

[0009] A bottom frame;

[0010] A plurality of lifting assemblies are installed vertically and at intervals at the four corners of the bottom frame;

[0011] A lifting platform is installed at the top of the lifting assembly, and a peripheral beam is arranged around the lifting platform, and the peripheral beam is located outside the bottom frame;

[0012] The steering mechanism comprises:

[0013] At least two drive assemblies are arranged at intervals;

[0014] At least one connecting rod assembly is connected to the drive assemblies at both ends.

[0015] A turning cylinder is hinged at one end to any of the driving assemblies and at the other end to the bottom of the underframe.

[0016] The application designs a vehicle frame, adopts a double-layer structure, can reduce the overall height of the vehicle, and further meets the transportation requirements of users through the additional peripheral beam.

[0017] On the basis of the above technical scheme, the embodiments of the application can also be improved as follows:

[0018] Further, the lifting platform comprises:

[0019] A plurality of platform longitudinal beams are arranged at intervals;

[0020] A plurality of platform transverse beams are arranged at intervals and are perpendicular to the platform longitudinal beams;

[0021] A support plate is installed on the platform longitudinal beam;

[0022] A plurality of lifting connecting plates are installed at the bottom of the support plate at intervals, and the lifting connecting plates are connected to the platform transverse beams, and the lifting connecting plates are installed on the output end of the lifting assembly, and the beneficial effect of the present step is that through the corresponding structural design, the strength of the lifting platform can be better ensured.

[0023] Further, the number of platform transverse beams is even, and the number of platform transverse beams is at least four, and the platform transverse beams are arranged in pairs;

[0024] The number of lifting connecting plates and lifting assemblies is consistent, and the number of lifting connecting plates is at least four;

[0025] Every two lifting connecting plates are installed in any group of platform transverse beams, and the beneficial effect of the present step is that through the specific structural design, the strength of the lifting platform can be ensured.

[0026] Further, the lifting assembly is a lifting hydraulic cylinder, and the lifting assembly is arranged vertically;

[0027] The height of the platform longitudinal beam is l, the height of the peripheral beam is L, and L is greater than or equal to 2l, and the beneficial effect of the present step is that through the specific size design of the peripheral beam and the platform longitudinal beam, an embedded structure is formed, which can ensure the strength while reducing the overall height.

[0028] Further, the distance between the horizontal plane where the upper end of the double-layer vehicle frame is located and the horizontal plane where the lower end of the steering mechanism is located is H, and H is less than or equal to 1050mm, and the beneficial effect of the present step is that through the control of the overall height, the adaptability can be improved.

[0029] Further, the driving assembly comprises:

[0030] A connecting piece is installed at the bottom of the underframe;

[0031] A rotating shaft is installed on the connecting piece;

[0032] A support frame is movably installed on the rotating shaft;

[0033] A driving motor is installed on the support frame;

[0034] A driving wheel is installed on the support frame, and the driving wheel is connected with the output end of the driving motor;

[0035] A driven wheel is installed on the support frame, and the beneficial effect of the present step is that the suspension function can be realized through the rotating shaft, so that it can be applied to inclined road surfaces.

[0036] Further, the driving wheel and the driven wheel have the same structure, both comprising a steel wheel and a polyurethane rubber coating layer, and the polyurethane rubber coating layer is sleeved on the outside of the steel wheel, and the beneficial effect of the present step is that stable transportation can be realized through the cooperation of the steel wheel and the polyurethane rubber coating layer.

[0037] Further, the connecting piece comprises:

[0038] A connecting disc is installed at the bottom of the underframe;

[0039] At least two suspension plates are installed at the bottom of the connecting disc in a spaced manner, and each suspension plate is provided with a rotating shaft, and the beneficial effect of the present step is that the function of the balance shaft can be better realized through the cooperation of the suspension plate and the rotating shaft.

[0040] Further, the connecting rod assembly comprises:

[0041] At least two hinge seats are connected with the driving assembly one by one;

[0042] A connecting rod is movably connected at both ends with the hinge seats, and the beneficial effect of the present step is that the synchronous movement of the two driving assemblies can be realized through the connecting rod assembly.

[0043] Further, the suspension plate is two, and the suspension plates are located at both ends of the support frame, the driving motor is installed inside the support frame, and the output end of the driving motor is located between the two suspension plates, and the beneficial effect of the present step is that the stable operation of the transport flat car can be better ensured.

[0044] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0045] 1. The application is carried out on the frame, adopts double-layer structure, compared with the lifting mechanism of traditional beam transport vehicle, the structure is simple and easy to use, and runs stably;

[0046] 2. The bottom frame and the lifting platform in the application are embedded structures, which can reduce the overall height and adapt to low height areas.

[0047] 3. The application is provided with a rotating shaft and a support frame, which cooperate with each other to form a function similar to a balanced bridge, which can adapt to different road surfaces

[0048] 4. The application designs the driving wheel and the driven wheel, and the outer surface is wrapped with a polyurethane coating layer, which can ensure the strength and stability. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0050] Figure 1 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0051] Figure 2 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure. Figure 1 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0052] Figure 3 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure. Figure 1 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0053] Figure 4 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure. Figure 3 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0054] Figure 5 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure. Figure 3 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0055] Figure 6 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure. Figure 1 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0056] Figure 7 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure. Figure 6 The structure diagram of the electric transport flat car according to the specific embodiment of the present application is shown in the figure.

[0057] Reference signs:

[0058] 1-Double-layer frame; 2-Steering mechanism;

[0059] 101-Base frame; 102-Lifting assembly; 103-Lifting platform; 104-Outer beam; 105-Platform longitudinal beam; 106-Platform crossbeam; 107-Support plate; 108-Lifting connection plate; 109-Base frame longitudinal beam; 110-Base frame crossbeam; 111-Base plate;

[0060] 201-Drive assembly; 202-Linkage assembly; 203-Steering cylinder; 204-Connector; 205-Rotating shaft; 206-Support frame; 207-Drive motor; 208-Drive wheel; 209-Driven wheel; 210-Steel wheel; 211-Polyurethane coating layer; 212-Connecting disc; 213-Suspension plate; 214-Hinge seat; 215-Linkage. Detailed Implementation

[0061] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0062] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0065] Example:

[0066] like Figures 1-7 As shown in the figure, this application discloses an electric transport flatcar that reduces the overall height of the vehicle while ensuring stable load-bearing capacity, thereby enabling passability under various working conditions and improving applicability. Specifically, the frame is designed as a double-layer frame and adopts an embedded structure, which can minimize the overall height and facilitate passage. At the same time, this application also designs a steering mechanism that can ensure stable transportation and adapt to inclined road surfaces, thereby improving applicability.

[0067] like Figure 1 , 2The specific structure in the application includes:

[0068] The double-layer frame 1 can better bear the weight and lift the heavy object, and is convenient for transportation.

[0069] The at least two steering mechanisms 2 are installed in parallel and spaced apart on the bottom of the double-layer frame 1, and the steering mechanism 2 is mainly used for transportation and steering of the frame.

[0070] The application is mainly used for transporting heavy objects, and therefore the frame needs to be ensured to work stably.

[0071] The bottom frame 101;

[0072] The plurality of lifting assemblies 102 are installed vertically and spaced apart on the four corners of the bottom frame 101, and the lifting assembly 102 is used for providing lifting power to facilitate lifting of the subsequent lifting platform 103.

[0073] The lifting platform 103 is installed on the top of the lifting assembly 102, and the periphery of the lifting platform 103 is provided with the peripheral beam 104 which is located outside the bottom frame 101.

[0074] In order to ensure that the application can better steer, the steering mechanism 2 is designed to adopt a form of operation of a single steering oil cylinder to simplify the structure and realize stable steering.

[0075] The at least two drive assemblies 201 are spaced apart.

[0076] The at least one connecting rod assembly 202 is connected with the drive assemblies 201 at both ends.

[0077] The steering oil cylinder 203 is hinged at one end to any one of the drive assemblies 201 and hinged at the other end to the bottom of the bottom frame 101.

[0078] In order to better ensure that the present application stably carries heavy objects, such as Figures 3-5 As shown, the lifting platform 103 comprises:

[0079] A plurality of platform longitudinal beams 105 are arranged at intervals;

[0080] A plurality of platform transverse beams 106 are arranged at intervals and are perpendicular to the platform longitudinal beams 105. The present application adopts the form of platform transverse beams 106 and platform longitudinal beams 105 being perpendicular to each other, so as to ensure the strength of the lifting platform 103 and enable it to stably carry heavy objects;

[0081] A support plate 107 is installed on the platform longitudinal beams 105. The support plate 107 is a flat plate for carrying heavy objects, wherein the peripheral beams are located around the support plate 107;

[0082] A plurality of lifting connecting plates 108 are arranged at intervals at the bottom of the support plate 107 and are connected with the platform transverse beams 106. The lifting connecting plates 108 are installed at the output end of the lifting assembly 102. The lifting connecting plates 108 are subsequently matched with the lifting assembly 102 to form a stable connection, so as to be driven by the lifting assembly 102 to perform lifting movement.

[0083] In order to better ensure the stability of the double-layer frame 1 structure, the platform transverse beams 106 are designed. The number of the platform transverse beams 106 is even and at least four. The platform transverse beams 106 are arranged in pairs, that is, the interval between the platform transverse beams 106 in the same group is small, while the interval between the platform transverse beams 106 in adjacent groups is large. This is because the platform transverse beams 106 in the same group are connected and matched with the subsequent lifting connecting plates 108, so as to ensure the stability of the lifting support and realize stable lifting;

[0084] The number of the lifting connecting plates 108 is consistent with that of the lifting assembly 102, and the number of the lifting connecting plates 108 is at least four.

[0085] Every two lifting connecting plates 108 are installed in any group of platform transverse beams 106.

[0086] Further description is made to the specific structure of the lifting platform 103. The number of the platform longitudinal beams 105 is three and they are arranged at intervals. The number of the platform transverse beams 106 is six and they are arranged in pairs and divided into three groups arranged at intervals. The two groups at the head and tail are used to connect the lifting connecting plates 108. Two lifting connecting plates 108 are arranged at intervals in the length direction of each group of platform transverse beams 106. Each lifting connecting plate 108 is matched with a lifting assembly 102, so as to facilitate subsequent lifting control.

[0087] In order to realize stable lifting, the lifting assembly 102 in the application is a lifting hydraulic cylinder, wherein the lifting assembly 102 is four, and all the lifting assemblies 102 are vertically arranged;

[0088] In order to reduce the overall height while ensuring the stability of the structure, the height of the platform longitudinal beam 105 is l, and the height of the peripheral beam 104 is L, L≥2l, that is, by increasing the height of the peripheral beam 104, the overall strength can be further ensured, and the embedded structure is also facilitated.

[0089] In order to better ensure the passability of the application as a transport vehicle, the distance between the horizontal plane where the upper end of the double-layer frame 1 is located and the horizontal plane where the lower end of the steering mechanism 2 is located is H, H≤1050mm, that is, the height of the whole vehicle is limited, so as to pass through the area with limited height.

[0090] The chassis 101 in the application is also required to ensure its stability and strength as part of the double-layer frame 1, so the chassis 101 also needs to be designed, specifically, the chassis 101 comprises:

[0091] A plurality of chassis longitudinal beams 109, which are distributed in parallel and at intervals;

[0092] A plurality of chassis transverse beams 110, which are distributed in parallel and at intervals, and are perpendicular to the chassis longitudinal beams 109;

[0093] A bottom plate 111 mounted on the chassis longitudinal beams 109, which facilitates the installation of subsequent parts; preferably, the chassis longitudinal beams are two, and a reinforcing rib is arranged between the chassis longitudinal beams, which can ensure the strength of the chassis 101.

[0094] In an embodiment, as shown in Figure 6 、 7 The driving assembly 201 in the application comprises:

[0095] A connecting piece 204 mounted at the bottom of the chassis 101, which can be a disc-shaped connecting piece or other forms of connecting pieces;

[0096] A rotating shaft 205 mounted on the connecting piece 204, which serves as a suspension point, facilitating the swing of the subsequent support frame 206, that is, enabling the subsequent driving assembly 201 to adapt to the inclined road surface;

[0097] A support frame 206 movably mounted on the rotating shaft 205, which facilitates the installation of subsequent driving motors 207 and other components to realize stable driving;

[0098] A driving motor 207 is installed on the support frame 206.

[0099] A driving wheel 208 is installed on the support frame 206, and the driving wheel 208 is connected with the output end of the driving motor 207.

[0100] A driven wheel 209 is installed on the support frame 206; the connection mode between the driving motor 207 and the driving wheel 208 and the driven wheel 209 in the application is an existing connection structure, mainly for realizing the transmission function.

[0101] In order to ensure that the application can better move on the road, the driving wheel 208 and the driven wheel 209 in the application are the same structure, both including a steel wheel 210 and a polyurethane rubber coating layer 211, and the polyurethane rubber coating layer 211 is sleeved outside the steel wheel 210, so that the driving wheel 208 and the driven wheel 209 can stably work on the road.

[0102] The part of the connecting piece 204 and the rotating shaft 205 in the application is designed to form a structure similar to a balance bridge, so as to be applicable to the inclined road, that is, to realize self-adaptive adjustment and ensure stability, wherein the connecting piece 204 includes:

[0103] A connecting disc 212 is installed at the bottom of the bottom frame 101.

[0104] At least two suspension plates 213 are installed at the bottom of the connecting disc 212 in intervals, and one rotating shaft 205 is installed on each suspension plate 213; the suspension point is formed by the suspension plate 213 and the rotating shaft 205, so as to form a function similar to a balance bridge, so as to adapt to different roads.

[0105] The connecting rod assembly 202 includes:

[0106] At least two hinged seats 214 are connected with the driving assembly 201 one by one.

[0107] A connecting rod 215 is movably connected with the hinged seat 214 at both ends, and the connecting rod assembly 202 can drive two driving assemblies 201 to move synchronously, so as to ensure stability.

[0108] In the application, the suspension plate 213 is two, and the suspension plate 213 is located at both ends of the support frame 206, the driving motor 207 is installed inside the support frame 206, and the output end of the driving motor 207 is located between the two suspension plates 213, so as to facilitate the adjustment of the gravity center of the whole driving assembly 201, and better realize the function of the driving assembly adapting to the road.

[0109] Further described in the application is as follows:

[0110] Firstly, the double-layer frame is adopted in the application, and then the four lifting oil cylinders are used to realize the lifting of the lower frame, so that the overall structure is simplified and the stability of transportation is ensured.

[0111] Secondly, the double-layer frame in the application is made of high-strength bridge special steel plate Q370qd and is spliced and welded, so that the frame strength is ensured and the frame is designed to be lightweight, the vehicle self-weight coefficient is reduced, and the energy utilization efficiency is improved.

[0112] Thirdly, the structure of the lifting platform is designed to be reasonable and stress-stable, and the lifting platform can adapt to workpieces of different lengths and is convenient to transport.

[0113] Finally, the double-layer frame is designed in an embedded mode, and the structure is reasonable and the space is compact, so that the strength and rigidity of the lifting platform and the lower frame are ensured and the overall height of the flat car is less than or equal to 1050mm.

[0114] In order to ensure that the application can be stably driven, lithium battery packs, electric control cabinets and the like are installed at the bottom of the double-layer frame, and the lifting assembly 102 in the application is located at the four corners of the double-layer frame, and a synchronous valve is also installed on the double-layer frame, which is connected with the lifting assembly, so that the synchronous lifting of the four oil cylinders is realized.

[0115] The upper and lower frames in the application are spliced and welded by a plurality of longitudinal and transverse beams, and each longitudinal and transverse beam is spliced and welded by high-strength bridge special steel plate Q370qd. In order to ensure the maximum carrying capacity of 75t of the flat car, the lifting platform and the chassis are designed to ensure sufficient strength and rigidity, and in order to ensure that the overall height of the flat car is less than or equal to 1050mm, the frame and the lifting platform are designed in an embedded mode.

[0116] The height of the peripheral beam in the application is increased to 400mm to increase the rigidity and strength of the platform, the height of the longitudinal and transverse beams in the middle of the platform is 200mm, the length and width dimensions of the lifting platform are greater than those of the lower frame, so that the lower frame can be embedded in the lifting platform by 200mm and fit with the longitudinal and transverse beams in the middle of the platform. This structure ensures the strength and rigidity of the lifting platform and the lower frame and ensures that the overall height of the flat car is less than or equal to 1050mm.

[0117] During work, only the workpiece to be transported needs to be placed on the lifting platform, the lifting assembly is adjusted, the driving assembly is started, and the workpiece to be transported is transported to the destination.

[0118] In the specification of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and technologies are not shown in detail so as not to obscure the understanding of the specification.

[0119] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0120] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. An electrically powered transport flat car, characterized in that, The utility model relates to a double-deck vehicle frame, comprising: a double-deck vehicle frame (1); at least two steering mechanisms (2) installed in parallel and spaced apart on the bottom of the double-deck vehicle frame (1); the double-deck vehicle frame (1) comprises: a chassis (101); a plurality of lifting assemblies (102) installed vertically and spaced apart on the four corners of the chassis (101); a lifting platform (103) installed on the top of the lifting assembly (102), and a peripheral beam (104) provided around the lifting platform (103) and located outside the chassis (101); the chassis (101) comprises: a plurality of chassis longitudinal beams (109) distributed in parallel and spaced apart; a plurality of chassis transverse beams (110) distributed in parallel and spaced apart, and the chassis transverse beams (110) are perpendicular to the chassis longitudinal beams (109); a bottom plate (111) installed on the chassis longitudinal beams (109); the steering mechanism (2) comprises: at least two drive assemblies (201) installed in spaced apart relation; at least one connecting rod assembly (202) having two ends connected to the drive assemblies (201) in a matched manner; a steering oil cylinder (203) having one end hingedly connected to any one of the drive assemblies (201) and the other end hingedly connected to the bottom of the chassis (101).

2. The electrically powered transport flat car of claim 1, wherein, the lifting platform (103) comprises: a plurality of platform longitudinal beams (105) installed in spaced apart relation; a plurality of platform transverse beams (106) installed in spaced apart relation, and the platform transverse beams (106) are perpendicular to the platform longitudinal beams (105); a support plate (107) installed on the platform longitudinal beams (105); a plurality of lifting connecting plates (108) installed in spaced apart relation on the bottom of the support plate (107), and the lifting connecting plates (108) are connected to the platform transverse beams (106), and the lifting connecting plates (108) are installed on the output end of the lifting assembly (102).

3. The electrically powered transport flat car of claim 2, wherein, the number of the platform transverse beams (106) is even, and the number of the platform transverse beams (106) is at least four, and the platform transverse beams (106) are arranged in pairs; the number of the lifting connecting plates (108) is consistent with the number of the lifting assembly (102), and the number of the lifting connecting plates (108) is at least four; every two lifting connecting plates (108) are installed in any one pair of platform transverse beams (106).

4. The electrically powered transport flat car of claim 3, wherein, the lifting assembly (102) is a lifting hydraulic cylinder, and the lifting assembly (102) is arranged vertically; the height of the platform longitudinal beam (105) is l, and the height of the peripheral beam (104) is L, and L is greater than or equal to 2l.

5. The electrically powered transport flat car of claim 4, wherein, the distance between the horizontal plane where the upper end of the double-deck vehicle frame (1) is located and the horizontal plane where the lower end of the steering mechanism (2) is located is H, and H is less than or equal to 1050mm.

6. The electrically powered flat car of claim 1, wherein, the drive assembly (201) comprises: a connecting piece (204) installed on the bottom of the chassis (101); a rotating shaft (205) installed on the connecting piece (204); a support frame (206) movably installed on the rotating shaft (205); A driving motor (207) is installed on the support frame (206); A driving wheel (208) is installed on the support frame (206), and the driving wheel (208) is connected with the output end of the driving motor (207); A driven wheel (209) is installed on the support frame (206).

7. The electrically powered transport flat car of claim 6, wherein, The driving wheel (208) and the driven wheel (209) are of the same structure, and each includes a steel wheel (210) and a polyurethane coating layer (211), and the polyurethane coating layer (211) is sleeved on the outside of the steel wheel (210).

8. The electrically powered flat car of claim 6, wherein, The connecting piece (204) includes: A connecting disc (212) is installed on the bottom of the bottom frame (101); At least two suspension plates (213) are installed on the bottom of the connecting disc (212) at intervals, and each suspension plate (213) is provided with a rotating shaft (205).

9. The electrically powered flat car of claim 8, wherein, The connecting rod assembly (202) includes: At least two hinged seats (214) are connected with the driving assembly (201) one by one; A connecting rod (215) is movably connected with the hinged seats (214) at both ends.

10. The electrically powered transport flat car of claim 9, wherein, The suspension plates (213) are two, and the suspension plates (213) are located at both ends of the support frame (206), the driving motor (207) is installed in the support frame (206), and the output end of the driving motor (207) is located between the two suspension plates (213).

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