Double-layer lifting electric transport flat car

Abstract

The invention discloses a double-layer lifting electric transportation flatcar, and relates to the technical field of steel box girder transportation. The at least two steering mechanisms are mounted at the bottom of the double-layer frame at intervals; the double-layer frame comprises a bottom frame; the lifting assemblies are mounted on 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 technical problem that an existing electric transport flatcar is not enough in adaptability to the transport environment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of steel box girder transportation, in particular to a double-layer lifting electric transportation flat car. Background Art

[0002] The company's factory has a huge amount of steel structure parts transported. Because the processing and installation of steel structures usually need to be carried out in a specific order, transportation can ensure that the components are used at the right time and location, avoiding construction delays or quality problems caused by incorrect sequences. At the same time, transportation of steel structures also facilitates access to suitable sites for subsequent processing.

[0003] The existing transportation method usually involves storing steel structures on horse stools and then transporting them by corresponding vehicles, such as using traditional fuel-powered beam transporters. The beam transporters have huge workloads and need to be used frequently for long periods of time, which leads to increased equipment damage and high maintenance costs. In addition, the beam transporters use diesel as energy, which has high fuel consumption and is neither economical nor environmentally friendly. According to statistics, the annual maintenance cost of beam transporters is about 2.8 million yuan, and the annual fuel cost of beam transporters is about 2.2 million yuan. Therefore, the economic efficiency of using beam transporters to transport conventional poles is extremely poor. Some manufacturers have also designed electric flat cars, but the overall height of such electric flat cars is relatively high, and they cannot adapt well to the road surface, so they are not adaptable enough. Summary of the invention

[0004] The purpose of the present invention is to provide a double-layer lifting electric transport flat car, which solves the technical problem that the electric transport flat car in the prior art is not sufficiently adaptable to the transport environment.

[0005] The present application embodiment discloses a double-layer lifting electric transport flat car, comprising: Double-layer frame; At least two steering mechanisms are installed at intervals at the bottom of the double-layer frame; The double-layer frame comprises: chassis; A plurality of lifting components are installed on the base frame at intervals; A lifting platform is installed on the top of the lifting assembly, and peripheral beams are arranged around the lifting platform, and the peripheral beams are located outside the base frame; The steering mechanism comprises: At least two drive assemblies, the drive assemblies being arranged at intervals; At least one connecting rod assembly, both ends of which are respectively connected to the driving assembly; A steering cylinder has one end hinged to any of the driving assemblies and the other end hinged to the bottom of the chassis.

[0006] The present application designs the frame with a double-layer structure, which can not only reduce the height of the entire vehicle, but also further meet the transportation needs of users by adding outer beams.

[0007] Based on the above technical solution, the embodiment of the present application can also be improved as follows: Furthermore, the lifting platform comprises: A plurality of platform longitudinal beams, wherein the platform longitudinal beams are arranged at intervals; A plurality of platform cross beams, wherein the platform cross beams are arranged at intervals and are perpendicular to the platform longitudinal beams; A support plate, mounted on the platform longitudinal beam; A plurality of lifting connection plates are installed at intervals at the bottom of the support plate, and the lifting connection plates are connected to the platform cross beam. The lifting connection plates are installed at the output end of the lifting assembly. The beneficial effect of adopting this step is that the strength of the lifting platform can be better guaranteed through corresponding structural design.

[0008] Furthermore, the platform cross beams are an even number, and the number of the platform cross beams is at least four, and the platform cross beams are arranged in groups of two; The number of the lifting connection plates is the same as the number of the lifting components, and there are at least four lifting connection plates; Every two lifting connection plates are installed in any group of platform beams. The beneficial effect of adopting this step is that the strength of the lifting platform can be guaranteed through specific structural design.

[0009] Further, the lifting assembly is a lifting hydraulic cylinder, and the lifting assembly is arranged vertically; The height of the platform longitudinal beam is l, and the height of the outer peripheral beam is L, L≥2l. The beneficial effect of adopting this step is to form an embedded structure through designing the specific dimensions of the outer peripheral beam and the platform longitudinal beam, which can ensure the strength while reducing the overall height.

[0010] Furthermore, the distance between the horizontal plane where the upper end of the double-layer frame is located and the horizontal plane where the lower end of the steering mechanism is located is H, H≤1050mm. The beneficial effect of adopting this step is that the adaptability can be improved by controlling the overall height.

[0011] Furthermore, the driving assembly comprises: A connecting piece, installed at the bottom of the chassis; A rotating shaft, mounted on the connecting member; A support frame, movably mounted on the rotating shaft; A driving motor is mounted on the support frame; A driving wheel is mounted on the support frame and connected to an output end of the driving motor; The driven wheel is mounted on the support frame. The beneficial effect of adopting this step is that the suspension function can be realized through the rotating shaft, so that it can be suitable for inclined roads.

[0012] Furthermore, the driving wheel and the driven wheel have the same structure, both comprising a steel wheel and a polyurethane rubber coating layer, wherein the polyurethane rubber coating layer is sleeved on the outside of the steel wheel. The beneficial effect of adopting this step is that stable transportation can be achieved through the cooperation between the steel wheel and the polyurethane rubber coating layer.

[0013] Furthermore, the connecting piece comprises: A connecting plate, mounted on the bottom of the chassis; At least two suspension plates are installed at intervals at the bottom of the connecting plate, and each of the suspension plates is installed with a rotating shaft. The beneficial effect of this step is to better realize the function of the balancing shaft by cooperating with the rotating shaft through the suspension plates.

[0014] Furthermore, the connecting rod assembly comprises: At least two articulated seats, each of which is connected to the driving assembly in a one-to-one correspondence; The connecting rod has two ends movably connected to the articulated seat respectively. The beneficial effect of adopting this step is to realize the synchronous movement of the two driving components through the connecting rod assembly.

[0015] Furthermore, there are two suspension plates, and the suspension plates are located at both ends of the support frame. The drive motor is installed inside the support frame, and the output end of the drive motor is located between the two suspension plates. The beneficial effect of adopting this step is that it can better ensure the stable operation of the transport flat car.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. This application adopts a double-layer structure for the frame. Compared with the lifting mechanism of the traditional beam transporter, this structure is simple to use and runs smoothly; 2. The base frame and lifting platform in this application are embedded structures, which can reduce the overall height and make it suitable for low-height areas.

[0017] 3. The present application is provided with a rotating shaft and a supporting frame, which cooperate with each other to form a function similar to a balance bridge, and can adapt to different road surfaces 4. The present application designs the driving wheel and the driven wheel, and the outer surface of the driving wheel and the driven wheel are wrapped with a polyurethane coating layer, so that the strength and stability can be ensured at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a double-layer lifting electric transport flat car according to a specific embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from another angle; Figure 3 for Figure 1 Schematic diagram of the structure of the middle double-layer frame; Figure 4 for Figure 3 Bottom view of the middle lifting platform; Figure 5 for Figure 3 Bottom view of the mid-frame; Figure 6 for Figure 1 The structural diagram of the steering mechanism; Figure 7 for Figure 6 Schematic diagram of the structure of the middle drive assembly; Reference numerals: 1-Double-layer frame; 2-Steering mechanism; 101- chassis; 102- lifting assembly; 103- lifting platform; 104- peripheral beam; 105- platform longitudinal beam; 106- platform cross beam; 107- support plate; 108- lifting connecting plate; 109- chassis longitudinal beam; 110- chassis cross beam; 111- bottom plate; 201-driving assembly; 202-connecting rod assembly; 203-steering cylinder; 204-connecting piece; 205-rotating shaft; 206-support frame; 207-driving motor; 208-driving wheel; 209-driven wheel; 210-steel wheel; 211-polyurethane rubber coating; 212-connecting plate; 213-suspension plate; 214-hinged seat; 215-connecting rod. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the invention belongs.

[0021] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Example: like Figure 1-7 As shown, an embodiment of the present application discloses a double-layer lifting electric transport flat car, which reduces the height of the whole vehicle while ensuring stable load-bearing, so that it can achieve passability under various working conditions and improve applicability; specifically, the frame is designed as a double-layer frame, and an embedded structure is adopted, which can minimize the overall height and facilitate passability; at the same time, the present application also designs a steering mechanism, which can ensure stable transportation while being able to adapt to inclined roads and improve applicability.

[0024] like Figure 1 , 2 As shown, the specific structure in this application includes: The double-layer frame 1 can bear weight better than the existing single-layer frame, and can also lift heavy objects better, so as to facilitate better transportation; At least two steering mechanisms 2 are installed at intervals at the bottom of the double-layer frame 1, and the steering mechanisms 2 are mainly used for transporting and steering the frame; This application is mainly used for transporting heavy objects, so it is necessary to ensure that the frame works stably. Specifically, the double-layer frame 1 includes: Base frame 101; A plurality of lifting components 102 are installed at intervals on the base frame 101. The lifting components 102 are used to provide lifting power, so as to facilitate the subsequent lifting platform 103 to be lifted; The lifting platform 103 is installed on the top of the lifting assembly 102, and the lifting platform 103 is provided with peripheral beams 104 around it. The peripheral beams 104 are located outside the bottom frame 101. Compared with the existing lifting platform, the present application designs the peripheral beams 104 to wrap the frame 101, so that the double-layer frame 1 is formed into an embedded structure, which can reduce the height of the whole vehicle, facilitate transportation through some height-restricted areas, and improve adaptability; at the same time, the present application can further increase the overall strength of the double-layer frame 1 through the peripheral beams 104, ensuring that the double-layer frame 1 can better carry objects; In order to ensure that the present application can steer better, the steering mechanism 2 is designed to be operated by a single steering cylinder, simplify the structure, and achieve stable steering. Specifically, the steering mechanism 2 in the present application is preferably two, arranged at intervals, to achieve stable steering; wherein the steering mechanism 2 includes: At least two drive components 201, the drive components 201 are arranged at intervals; At least one connecting rod assembly 202, both ends of which are respectively connected to the driving assembly 201; The steering cylinder 203 is hinged at one end to any one of the drive assemblies 201, and at the other end to the bottom of the chassis 101. The steering mechanism 2 in the present application preferably includes two drive assemblies 201 for providing power, and the connecting rod assembly 202 connected between the two drive assemblies 201 is capable of realizing the synchronous movement of the two drive assemblies 201, and then driven by the steering cylinder 203 to realize the synchronous steering of the two drive assemblies 201.

[0025] In order to better ensure that this application can stably carry heavy objects, such as Figure 3-5 As shown, the lifting platform 103 includes: A plurality of platform longitudinal beams 105, wherein the platform longitudinal beams 105 are arranged at intervals; A plurality of platform cross beams 106, the platform cross beams 106 are arranged at intervals, and the platform cross beams 106 are perpendicular to the platform longitudinal beams 105. The present application adopts a form in which the platform cross beams 106 and the platform longitudinal beams 105 are perpendicular to each other, so as to ensure the strength of the lifting platform 103, so that it can stably carry heavy objects; A support plate 107 is installed on the platform longitudinal beam 105. The support plate 107 is a flat plate used to carry heavy objects, wherein the peripheral beams are located around the support plate 107; A plurality of lifting connection plates 108 are installed at intervals at the bottom of the support plate 107, and the lifting connection plates 108 are connected to the platform beam 106. The lifting connection plates 108 are installed at the output end of the lifting component 102. The lifting connection plates 108 subsequently cooperate with the lifting component 102 to form a stable connection, so that the lifting movement can be performed under the drive of the lifting component 102.

[0026] In order to better ensure the stability of the double-layer frame 1 structure, the platform beams 106 are designed, wherein the platform beams 106 are an even number, and the number of the platform beams 106 is at least four, and the platform beams 106 are grouped in pairs, that is, the spacing between the platform beams 106 in the same group is small, and the spacing between the platform beams 106 in adjacent groups is large, because the platform beams 106 in the same group are to be connected and matched with the subsequent lifting connection plates 108, so that the stability of the lifting support can be ensured, and stable lifting can be achieved; The number of the lifting connection plates 108 is the same as the number of the lifting components 102, and there are at least four lifting connection plates 108; Every two lifting connection plates 108 are installed in any group of the platform beams 106 .

[0027] The specific structure of the lifting platform 103 is further explained, wherein there are three platform longitudinal beams 105, which are arranged at intervals; there are six platform cross beams 106, which are grouped in pairs and divided into three groups arranged at intervals, wherein the first and last groups are used to connect the lifting connecting plates 108; each group of platform cross beams 106 is provided with two lifting connecting plates 108 at intervals in the length direction, and each lifting connecting plate 108 cooperates with a lifting component 102, which facilitates subsequent lifting control.

[0028] In order to achieve stable lifting, the lifting assembly 102 in the present application is a lifting hydraulic cylinder, wherein there are four lifting assemblies 102, and all the lifting assemblies 102 are arranged vertically; In order to reduce the overall height and ensure the stability of the structure, the height of the platform longitudinal beam 105 in the present application is l, and the height of the outer peripheral beam 104 is L, L≥2l, that is, by increasing the height of the outer peripheral beam 104, the overall strength can be further guaranteed, and it is also convenient to realize the embedded structure.

[0029] In order to better ensure the passability of the present 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 entire vehicle is limited to facilitate passing through some height-restricted areas.

[0030] The underframe 101 in the present application, as a part of the double-layer frame 1, also needs to ensure its stability and strength, so the underframe 101 also needs to be designed. Specifically, the underframe 101 includes: A plurality of chassis longitudinal beams 109, wherein the chassis longitudinal beams 109 are arranged in parallel and at intervals; A plurality of chassis cross beams 110 , wherein the chassis cross beams 110 are parallel and spaced apart, and the chassis cross beams 110 are perpendicular to the chassis longitudinal beams 109 ; The bottom plate 111 is installed on the chassis longitudinal beam 109, which is convenient for installing subsequent parts; preferably, there are two chassis longitudinal beams, and reinforcing ribs are arranged between the chassis longitudinal beams, so as to ensure the strength of the chassis 101.

[0031] In one embodiment, if Figure 6 , 7 As shown, the driving component 201 in the present application includes: A connecting member 204 is installed at the bottom of the base frame 101. The connecting member 204 may be a disc-shaped connecting member or other forms of connecting members; A rotating shaft 205 is mounted on the connecting member 204. The rotating shaft serves as a suspension point to facilitate the swinging of the subsequent support frame 206, so that the subsequent driving assembly 201 can adapt to the inclined road surface; A support frame 206 is movably mounted on the rotating shaft 205, and the support frame 206 is convenient for mounting subsequent drive motors 207 and other components to achieve stable driving; A driving motor 207 is mounted on the support frame 206; A driving wheel 208 is mounted on the support frame 206 and connected to the output end of the driving motor 207; The driven wheel 209 is installed on the support frame 206; the connection method between the driving motor 207 and the driving wheel 208 and the driven wheel 209 in the present application is an existing connection structure, which is mainly for realizing the transmission function.

[0032] In order to ensure that the present application can move better on the road surface, the driving wheel 208 and the driven wheel 209 described in the present application have the same structure, both including a steel wheel 210 and a polyurethane coating layer 211, and the polyurethane coating layer 211 is mounted on the outside of the steel wheel 210, so as to ensure that the driving wheel 208 and the driven wheel 209 can work stably on the road surface.

[0033] The present application designs the connection member 204 and the rotating shaft 205 to form a structure similar to a balance bridge, which can be applied to inclined roads, that is, to achieve adaptive adjustment and ensure stability, wherein the connection member 204 includes: A connection plate 212 is installed at the bottom of the base frame 101; At least two suspension plates 213 are installed at intervals at the bottom of the connecting plate 212, and each of the suspension plates 213 is installed with a rotating shaft 205; the present application forms a suspension point through the suspension plate 213 and the rotating shaft 205, thereby forming a function similar to a balancing bridge, so as to adapt to different road surfaces.

[0034] Wherein, the connecting rod assembly 202 includes: At least two articulated seats 214, the articulated seats 214 are connected to the driving components 201 in a one-to-one correspondence; The two ends of the connecting rod 215 are movably connected to the hinge seat 214 respectively. The connecting rod assembly 202 can drive the two driving assemblies 201 to move synchronously, thereby ensuring stability.

[0035] Among them, the suspension plates 213 in the present application are two, and the suspension plates 213 are located at both ends of the support frame 206, the drive motor 207 is installed inside the support frame 206, and the output end of the drive motor 207 is located between the two suspension plates 213, which makes it easy to adjust the center of gravity of the entire drive component 201 and can better realize the function of the drive component to adapt to the road surface.

[0036] Further explanation for this application: First, the application adopts a double-layer frame, and then uses four lifting cylinders to achieve lifting and lowering, which simplifies the overall structure and ensures the stability of transportation; Secondly, the double-layer frame in this application is made of high-strength bridge-specific steel plate Q370qd, which is welded together. While ensuring the strength of the frame, the frame is designed to be lightweight, which reduces the vehicle's deadweight coefficient and improves energy efficiency. Thirdly, the present application designs the structure of the lifting platform to ensure that the structure is reasonable, the force is stable, it can adapt to workpieces of different lengths, and it is convenient for transportation; Finally, the present application adopts an embedded design for the double-layer frame. This structure is reasonable and the space is compact. While meeting the strength and rigidity of the lifting platform and the lower frame, it ensures that the overall height of the flat car is ≤1050mm.

[0037] In order to ensure that the present application can be driven stably, a lithium battery pack, an electric control cabinet, etc. are installed at the bottom of the double-layer frame. At the same time, the lifting assembly 102 in the present application is located at the four corners of the double-layer frame, and a synchronization valve is also installed on the double-layer frame. The synchronization valve is connected to the lifting assembly to achieve synchronous lifting of the four cylinders.

[0038] The upper and lower frames in this application are welded from multiple longitudinal and transverse beams, and each longitudinal and transverse beam is welded from high-strength bridge-specific steel plate Q370qd. In order to ensure the maximum carrying capacity of the flat car of 75t, this application designs the lifting platform and the chassis to ensure sufficient strength and rigidity. At the same time, in order to ensure that the overall height of the flat car is ≤1050mm, the frame and lifting platform are designed to be embedded.

[0039] This application increases the height of the outer beam to 400mm to increase the rigidity of the platform. The height of the longitudinal and transverse beams in the middle of the platform is 200mm. The length and width of the lifting platform are larger than the lower frame, so that the lower frame can be embedded in the lifting platform 200mm and fit with the longitudinal and transverse beams in the middle of the platform. This structure ensures that the overall height of the flat car is ≤1050mm while meeting the strength and rigidity of the lifting platform and the lower frame.

[0040] During operation, the workpiece to be transported only needs to be placed on the lifting platform, the lifting and lowering are adjusted by the lifting component, and the driving component is started to transport the workpiece to be transported to the destination.

[0041] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 invention. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. 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 invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A double-layer lifting electric transport flat car, characterized in that: include: Double-layer frame (1); At least two steering mechanisms (2) are installed at intervals on the bottom of the double-layer frame (1); The double-layer frame (1) comprises: Base frame (101); A plurality of lifting components (102) are installed at intervals on the base frame (101); A lifting platform (103) is installed on the top of the lifting assembly (102), and peripheral beams (104) are arranged around the lifting platform (103), and the peripheral beams (104) are located outside the base frame (101); The steering mechanism (2) comprises: At least two drive assemblies (201), the drive assemblies (201) being arranged at intervals; At least one connecting rod assembly (202), both ends of which are respectively connected to the driving assembly (201); A steering cylinder (203) has one end hinged to any one of the drive assemblies (201) and the other end hinged to the bottom of the chassis (101).

2. The double-layer lifting electric transport flat car according to claim 1 is characterized in that: The lifting platform (103) comprises: A plurality of platform longitudinal beams (105), wherein the platform longitudinal beams (105) are arranged at intervals; A plurality of platform cross beams (106), wherein the platform cross beams (106) are arranged at intervals, and the platform cross beams (106) are perpendicular to the platform longitudinal beams (105); A support plate (107) mounted on the platform longitudinal beam (105); A plurality of lifting connection plates (108) are installed at intervals on the bottom of the support plate (107), and the lifting connection plates (108) are connected to the platform crossbeam (106). The lifting connection plates (108) are installed at the output end of the lifting assembly (102).

3. The double-layer lifting electric transport flat car according to claim 2 is characterized in that: The platform crossbeams (106) are an even number, and the number of the platform crossbeams (106) is at least four, and the platform crossbeams (106) are arranged in groups of two; The number of the lifting connection plates (108) is the same as the number of the lifting components (102), and there are at least four lifting connection plates (108); Every two lifting connection plates (108) are installed in any group of platform beams (106).

4. The double-layer lifting electric transport flat car according to claim 3 is characterized in that: The lifting component (102) is a lifting hydraulic cylinder, and the lifting component (102) is arranged vertically; The height of the platform longitudinal beam (105) is l, the height of the peripheral beam (104) is L, and L≥2l.

5. The double-layer lifting electric transport flat car according to claim 4 is characterized in that: 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, and H is less than or equal to 1050 mm.

6. The double-layer lifting electric transport flat car according to claim 1 is characterized in that: The driving component (201) comprises: A connecting member (204) is installed at the bottom of the base frame (101); A rotating shaft (205) mounted on the connecting member (204); A support frame (206) movably mounted on the rotating shaft (205); A driving motor (207) is mounted on the support frame (206); A driving wheel (208) is mounted on the support frame (206), and the driving wheel (208) is connected to an output end of the driving motor (207); The driven wheel (209) is mounted on the support frame (206).

7. The double-layer lifting electric transport flat car according to claim 6 is characterized in that: The driving wheel (208) and the driven wheel (209) have the same structure, and both comprise a steel wheel (210) and a polyurethane rubber coating layer (211), wherein the polyurethane rubber coating layer (211) is sleeved outside the steel wheel (210).

8. The double-layer lifting electric transport flat car according to claim 6 is characterized in that: The connecting member (204) comprises: A connection plate (212) mounted on the bottom of the base frame (101); At least two suspension plates (213) are installed at intervals on the bottom of the connection plate (212), and a rotating shaft (205) is installed on each of the suspension plates (213).

9. The double-layer lifting electric transport flat car according to claim 8, characterized in that: The connecting rod assembly (202) comprises: At least two hinged seats (214), the hinged seats (214) being connected to the drive components (201) in a one-to-one correspondence; The connecting rod (215) has two ends movably connected to the hinge seat (214).

10. The double-layer lifting electric transport flat car according to claim 9, characterized in that: There are two suspension plates (213), and the suspension plates (213) are located at both ends of the support frame (206); the drive motor (207) is installed inside the support frame (206), and the output end of the drive motor (207) is located between the two suspension plates (213).

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