Frame structure and carrier with same

Abstract

The utility model provides a frame structure and a carrier with the frame structure, the frame structure comprises a first supporting arm, a second supporting arm, a first fork leg, a second fork leg, a cross beam, a supporting beam, a front cover plate and a rear cover plate, the lower end of the first supporting arm is vertically and fixedly connected to the front end of the first fork leg, and the lower end of the second supporting arm is vertically and fixedly connected to the rear end of the second fork leg; the lower end of the second supporting arm is vertically and fixedly connected to the front end of the second fork leg; the cross beam is fixedly connected between the front end of the first fork leg and the front end of the second fork leg, and the supporting beam is fixedly connected between the top end of the first supporting arm and the top end of the second supporting arm; the front cover plate is fixedly connected between the front side of the first supporting arm and the front side of the second supporting arm, the rear cover plate is detachably installed between the rear side of the first supporting arm and the rear side of the second supporting arm, and a battery containing cavity is defined by the front cover plate, the first supporting arm, the rear cover plate and the second supporting arm. The device has the advantages of simple structure, stable and firm structure, low manufacturing cost, low maintenance cost, long service life and convenience in color spraying.

Description

Technical Field

[0001] The utility model relates to the technical field of transport vehicles, in particular to a frame structure and a transport vehicle with the frame structure. Background Art

[0002] As we all know, in construction sites and warehousing and logistics, transport trucks are widely used means of transportation.

[0003] Among them, the frame of the existing transport truck is not only extremely complex in structure, but also has an unstable connection and installation structure, which is very easy to become loose and damaged. Not only is the manufacturing cost high, the maintenance cost is high, but also the service life is seriously affected.

[0004] Furthermore, during the manufacturing process of the existing transport truck frame, different adjacent parts need to be sprayed with different colors. Since the parts in the existing transport truck frame are almost all welded together, the connection between the adjacent different parts in the frame is prone to staggered and uneven spraying colors during the spraying process, which is extremely inconvenient and seriously affects the aesthetics of the frame.

[0005] Therefore, there is an urgent need for a frame structure and a transport vehicle having the frame structure to overcome the above-mentioned problems. Utility Model Content

[0006] The purpose of the embodiment of the utility model is to provide a frame structure, which has the advantages of simple structure, stable and firm structure, low manufacturing cost, low maintenance cost, long service life and convenient color spraying.

[0007] Another object of the embodiment of the present invention is to provide a transport vehicle having the advantages of simple structure, stable and firm structure, low manufacturing cost, low maintenance cost, long service life and convenient spraying color.

[0008] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present invention provides a frame structure, comprising: a first support arm, a second support arm, a first fork leg, a second fork leg, a crossbeam, a support beam, a front cover plate, and a rear cover plate.

[0009] The lower end of the first support arm is vertically fixedly connected to the front end of the first fork leg, and the lower end of the second support arm is vertically fixedly connected to the front end of the second fork leg, and the first support arm and the second support arm are spaced apart and aligned in the left-right direction, and the first fork leg and the second fork leg are spaced apart and aligned in the left-right direction;

[0010] The cross beam is fixedly connected between the front end of the first fork leg and the front end of the second fork leg, and the support beam is fixedly connected between the top end of the first support arm and the top end of the second support arm;

[0011] The front cover is fixedly connected between the front side of the first support arm and the front side of the second support arm, and the rear cover is detachably installed between the rear side of the first support arm and the rear side of the second support arm. A battery accommodating cavity is formed between the front cover, the first support arm, the rear cover and the second support arm.

[0012] Optionally, the support beam includes an intermediate connecting plate, a front side plate and a rear side plate, the intermediate connecting plate is arranged horizontally, the front side plate is vertically fixedly connected to the front side of the intermediate connecting plate, the rear side plate is vertically fixedly connected to the rear side of the intermediate connecting plate, and the front side plate and the rear side plate are aligned in the front-to-back direction.

[0013] Optionally, the middle connecting plate, the front side plate and the rear side plate are integrally stamped or welded to form a connection structure.

[0014] Optionally, the middle connecting plate, the front side plate and the rear side plate are all in an arched structure with both ends bent downward.

[0015] Optionally, the left end of the middle connecting plate forms a first vertical connecting portion, and the right end of the middle connecting plate forms a second vertical connecting portion;

[0016] The top end of the first support arm extends forward to form a third vertical connection portion, and the top end of the second support arm extends forward to form a fourth vertical connection portion;

[0017] The first vertical connection portion is fixedly connected to the third vertical connection portion, and the second vertical connection portion is fixedly connected to the fourth vertical connection portion.

[0018] Optionally, the frame structure also includes: a first bent connecting arm, a first vertical reinforcing plate, a second bent connecting arm and a second vertical reinforcing plate, the lower end of the first bent connecting arm is vertically fixedly connected to the top of the front end of the first fork leg, the upper end of the first bent connecting arm is horizontally fixedly connected to the left side of the lower end of the first support arm, and the first vertical reinforcing plate is vertically fixedly connected between the first bent connecting arm, the top of the front end of the first fork leg and the left side of the lower end of the first support arm; the lower end of the second bent connecting arm is vertically fixedly connected to the top of the front end of the second fork leg, the upper end of the second bent connecting arm is horizontally fixedly connected to the right side of the lower end of the second support arm, and the second vertical reinforcing plate is vertically fixedly connected between the second bent connecting arm, the top of the front end of the second fork leg and the right side of the lower end of the second support arm.

[0019] Optionally, the frame structure also includes: a first bent reinforcement plate, a second bent reinforcement plate, a third bent reinforcement plate and a fourth bent reinforcement plate, the first bent reinforcement plate and the second bent reinforcement plate are both vertically fixedly connected to the bottom of the rear end of the first fork leg, and the length directions of the first bent reinforcement plate and the second bent reinforcement plate are both extended along the front-to-back direction; the third bent reinforcement plate and the fourth bent reinforcement plate are both vertically fixedly connected to the bottom of the rear end of the second fork leg, and the length directions of the third bent reinforcement plate and the fourth bent reinforcement plate are both extended along the front-to-back direction.

[0020] Optionally, the first bent reinforcement plate includes a first front straight portion, a first inclined connecting portion and a first rear straight portion distributed sequentially from front to rear, the second bent reinforcement plate includes a second front straight portion, a second inclined connecting portion and a second rear straight portion distributed sequentially from front to rear, and the first inclined connecting portion and the second inclined connecting portion are arranged to be gradually approached from front to rear; the third bent reinforcement plate includes a third front straight portion, a third inclined connecting portion and a third rear straight portion distributed sequentially from front to rear, and the fourth bent reinforcement plate includes a fourth front straight portion, a fourth inclined connecting portion and a fourth rear straight portion distributed sequentially from front to rear, and the first inclined connecting portion and the second inclined connecting portion are arranged to be gradually approached from front to rear.

[0021] 18. The foldable frame of claim 17, wherein the first and second fork legs are configured to have a first, second, and third lateral extensions extending from a central portion of the first fork leg and a second, second, and third lateral extensions extending from a central portion of the second fork leg.

[0022] The left side of the second fork leg is bent downward to form a third reinforcing side wall, and the right side of the second fork leg is bent downward to form a fourth reinforcing side wall; the left side of the third front straight portion is fixedly connected to the right side of the rear end of the third reinforcing side wall, and the right side of the fourth front straight portion is fixedly connected to the left side of the rear end of the fourth reinforcing side wall; the front end bottom of the third reinforcing side wall is also formed with a third L-shaped reinforcing wall that is bent horizontally to the right and then bent vertically upward, and the front end bottom of the fourth reinforcing side wall is also formed with a fourth L-shaped reinforcing wall that is bent horizontally to the left and then bent vertically upward; the front end of the third front straight portion is also bent to the right and extended to form a third reinforcing connecting portion, and the third reinforcing connecting portion is fixedly connected to the rear end of the third L-shaped reinforcing wall; the front end of the fourth front straight portion is also bent to the left and extended to form a fourth reinforcing connecting portion, and the fourth reinforcing connecting portion is fixedly connected to the rear end of the fourth L-shaped reinforcing wall.

[0023] To achieve the above-mentioned purpose, a second aspect of an embodiment of the present utility model provides a transport vehicle, wherein the transport vehicle includes the aforementioned frame structure.

[0024] In the frame structure of the present invention, the lower end of the first support arm is vertically fixedly connected to the front end of the first fork leg, the lower end of the second support arm is vertically fixedly connected to the front end of the second fork leg, the first support arm and the second support arm are spaced apart and aligned in the left-right direction, and the first fork leg and the second fork leg are spaced apart and aligned in the left-right direction. A crossbeam is fixedly connected between the front end of the first fork leg and the front end of the second fork leg, and a support beam is fixedly connected between the top end of the first support arm and the top end of the second support arm. A front cover is fixedly connected between the front side of the first support arm and the front side of the second support arm, and a rear cover is removably mounted between the rear side of the first support arm and the rear side of the second support arm. A battery compartment is formed between the front cover, the first support arm, the rear cover, and the second support arm. This makes the frame structure of the present invention simpler, more stable, and more robust, significantly reducing manufacturing costs. The rear cover is removably mounted between the rear side of the first support arm and the rear side of the second support arm, making it easier to maintain, significantly reducing maintenance costs, and significantly extending its service life. On the other hand, it is more convenient to spray different colors on the support beam and the rear cover, avoiding the problem of staggered and uneven spraying colors at the joints of adjacent different components, making spraying colors more convenient and making the frame structure of the present invention more beautiful. Since the transport vehicle of the present invention has the above-mentioned frame structure of the present invention, the transport vehicle of the present invention also has the advantages of simple structure, stable and strong structure, low manufacturing cost, low maintenance cost, long service life and convenient spraying color. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a combined three-dimensional schematic diagram of an embodiment of the frame structure of the utility model.

[0026] Figure 2 for Figure 1 Schematic diagram from another perspective.

[0027] Figure 3 for Figure 1 Schematic diagram from another perspective.

[0028] Figure 4 for Figure 3 Schematic diagram of the decomposition. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments, but the implementation manner of the present invention is not limited thereto.

[0030] See also Figures 1 to 4The frame structure 100 of the present invention includes: a first support arm 11, a second support arm 12, a first fork leg 13, a second fork leg 14, a cross beam 15, a support beam 16, a front cover plate 17 and a rear cover plate 18. The lower end of the first support arm 11 is vertically fixedly connected to the front end of the first fork leg 13, and the lower end of the second support arm 12 is vertically fixedly connected to the front end of the second fork leg 14. The first support arm 11 and the second support arm 12 are spaced apart and aligned in the left-right direction, and the first fork leg 13 and the second fork leg 14 are spaced apart and aligned in the left-right direction. Alternatively, in this embodiment, the lower end of the first support arm 11 is vertically fixedly connected to the front end of the first fork leg 13 by welding, and the lower end of the second support arm 12 is vertically fixedly connected to the front end of the second fork leg 14 by welding. Of course, the fixed connection structure between the lower end of the first support arm 11 and the front end of the first fork leg 13, and the fixed connection structure between the lower end of the second support arm 12 and the front end of the second fork leg 14 are not limited to this. In other embodiments, bolt fastening can also be selected, all of which are within the scope of protection of the present invention and are therefore not described in detail here. The crossbeam 15 is fixedly connected between the front end of the first fork leg 13 and the front end of the second fork leg 14, and the support beam 16 is fixedly connected between the top end of the first support arm 11 and the top end of the second support arm 12. This ensures that the first support arm 11, the second support arm 12, the first fork leg 13, the second fork leg 14, the crossbeam 15, and the support beam 16 are firmly and stably connected together, making the structure more solid and stable. The front cover 17 is fixedly connected between the front side of the first support arm 11 and the front side of the second support arm 12, and the rear cover 18 is detachably mounted between the rear side of the first support arm 11 and the rear side of the second support arm 12. Optionally, in this embodiment, the rear cover 18 is also detachably mounted on the rear side of the crossbeam 15, making the connection structure more secure and stable. However, the present invention is not limited to this embodiment. A battery accommodating cavity 19 is formed between the front cover 17, the first support arm 11, the rear cover 18, and the second support arm 12. The battery accommodating cavity 19 can be used to accommodate and install batteries. On the one hand, the structure of the frame structure 100 of the present invention is simpler, more stable and stronger, and the manufacturing cost is greatly reduced. The rear cover 18 is detachably mounted between the rear side of the first support arm 11 and the rear side of the second support arm 12, making it easier to maintain, greatly reducing maintenance costs, and significantly extending the service life. On the other hand, it is more convenient to spray different colors on the support beam 16 and the rear cover plate 18, avoiding the problem of staggered and uneven spray colors at the joints of adjacent different components, making spraying colors more convenient and making the frame structure 100 of the present invention more beautiful. Specifically, as follows:

[0031] See also Figure 1 and Figure 2In this embodiment, the support beam 16 includes an intermediate connecting plate 161, a front side plate 162 and a rear side plate 163. The intermediate connecting plate 161 is arranged horizontally, the front side plate 162 is vertically fixedly connected to the front side of the intermediate connecting plate 161, and the rear side plate 163 is vertically fixedly connected to the rear side of the intermediate connecting plate 161. The front side plate 162 and the rear side plate 163 are aligned and arranged along the front-to-back direction, so that the structure of the support beam 16 is more solid. Among them, the intermediate connecting plate 161 and the front side plate 162 and the rear side plate 163 can be selected to be an integrally stamped or welded connection structure, all of which are within the protection scope of the present utility model. Preferably, in this embodiment, the intermediate connecting plate 161, the front side plate 162 and the rear side plate 163 are all arched structures with both ends bent downward, which can not only enhance the supporting load strength, but also make installation more convenient.

[0032] Please continue reading Figure 1 and Figure 2 The left end of the middle connecting plate 161 forms a first vertical connecting portion 1611, and the right end of the middle connecting plate 161 forms a second vertical connecting portion 1612. The top end of the first support arm 11 extends forward to form a third vertical connecting portion 111, and the top end of the second support arm 12 extends forward to form a fourth vertical connecting portion 121. The first vertical connecting portion 1611 is fixedly connected to the third vertical connecting portion 111, and the second vertical connecting portion 1612 is fixedly connected to the fourth vertical connecting portion 121. This achieves an installation structure in which the support beam 16 is fixedly connected between the top ends of the first support arm 11 and the second support arm 12.

[0033] Optionally, in this embodiment, the first vertical connection portion 1611 is fixedly connected to the third vertical connection portion 111 by bolt fastening, and the second vertical connection portion 1612 is fixedly connected to the fourth vertical connection portion 121 by bolt fastening. Of course, the fixed connection structure between the first vertical connection portion 1611 and the third vertical connection portion 111, and the fixed connection structure between the second vertical connection portion 1612 and the fourth vertical connection portion 121 are not limited to this. In other embodiments, welding can also be selected for fixed connection, which is within the protection scope of the present utility model and will not be described in detail here.

[0034] Please continue reading Figure 1 and Figure 2The frame structure 100 of the present invention includes a first bent connecting arm 21, a first vertical reinforcement plate 22, a second bent connecting arm 23, and a second vertical reinforcement plate 24. The lower end of the first bent connecting arm 21 is vertically fixedly connected to the top of the front end of the first fork leg 13, and the upper end of the first bent connecting arm 21 is horizontally fixedly connected to the left side of the lower end of the first support arm 11. The first vertical reinforcement plate 22 is vertically fixedly connected between the first bent connecting arm 21, the top of the front end of the first fork leg 13, and the left side of the lower end of the first support arm 11. This strengthens the connection, making the connection between the lower end of the first support arm 11 and the front end of the first fork leg 13 more secure and stable. Furthermore, the lower end of the second bent connecting arm 23 is vertically fixedly connected to the top of the front end of the second fork leg 14, and the upper end of the second bent connecting arm 23 is horizontally fixedly connected to the right side of the lower end of the second support arm 12. The second vertical reinforcing plate 24 is vertically fixedly connected between the second bent connecting arm 23, the top of the front end of the second fork leg 14, and the right side of the lower end of the second support arm 12. This strengthens the connection, making the connection structure between the lower end of the second support arm 12 and the front end of the second fork leg 14 more secure and stable.

[0035] See also Figure 3 and Figure 4 The frame structure 100 of the present invention further includes: a first bent reinforcement plate 25, a second bent reinforcement plate 26, a third bent reinforcement plate 27 and a fourth bent reinforcement plate 28. The first bent reinforcement plate 25 and the second bent reinforcement plate 26 are both vertically fixedly connected to the bottom of the rear end of the first fork leg 13. Optionally, in this embodiment, the first bent reinforcement plate 25 and the second bent reinforcement plate 26 are both vertically fixedly connected to the bottom of the rear end of the first fork leg 13 by welding, and the length directions of the first bent reinforcement plate 25 and the second bent reinforcement plate 26 are both extended in the front-to-back direction, thereby strengthening the load strength of the rear end of the first fork leg 13, preventing the risk of bending or breaking when the rear end of the first fork leg 13 is overloaded, and the structure is more solid and reliable. Furthermore, the third bent reinforcing plate 27 and the fourth bent reinforcing plate 28 are both vertically fixedly connected to the bottom of the rear end of the second fork leg 14. Optionally, in this embodiment, the third bent reinforcing plate 27 and the fourth bent reinforcing plate 28 are both vertically fixedly connected to the bottom of the rear end of the second fork leg 14 by welding, and the length directions of the third bent reinforcing plate 27 and the fourth bent reinforcing plate 28 extend along the front-to-back direction, thereby strengthening the load strength of the rear end of the second fork leg 14, preventing the risk of bending or breaking when the rear end of the second fork leg 14 is overloaded, and the structure is more solid and reliable.

[0036] Please continue reading Figure 3 and Figure 4The first bent reinforcement plate 25 includes a first front straight portion 251, a first inclined connection portion 252, and a first rear straight portion 253, which are sequentially distributed from front to rear. The second bent reinforcement plate 26 includes a second front straight portion 261, a second inclined connection portion 262, and a second rear straight portion 263, which are sequentially distributed from front to rear. The first inclined connection portion 252 and the second inclined connection portion 262 are arranged to be gradually approached from front to rear, so as to better adapt to the shape of the rear end of the first fork leg 13, make the installation layout more reasonable, and further improve the structural firmness. Furthermore, the third bent reinforcement plate 27 includes a third front straight portion 271, a third inclined connection portion 272 and a third rear straight portion 273 distributed sequentially from front to rear, and the fourth bent reinforcement plate 28 includes a fourth front straight portion 281, a fourth inclined connection portion 282 and a fourth rear straight portion 283 distributed sequentially from front to rear. The first inclined connection portion 252 and the second inclined connection portion 262 are arranged to be gradually approached from front to rear to better adapt to the shape of the rear end of the second fork leg 14, making the installation layout more reasonable and further improving the structural firmness.

[0037] See also Figures 1 to 4 Preferably, in this embodiment, the left side of the first fork leg 13 is bent downward to form a first reinforcing side wall 131, and the right side of the first fork leg 13 is bent downward to form a second reinforcing side wall 132. The reinforcement of the first and second reinforcing side walls 131, 132 improves the overall load capacity of the first fork leg 13, making the structure more secure and reliable. The left side of the first front straight portion 251 is fixedly connected to the right side of the rear end of the first reinforcing side wall 131, and the right side of the second front straight portion 261 is fixedly connected to the left side of the rear end of the second reinforcing side wall 132, making the structure more secure and stable. Furthermore, the front bottom of the first reinforcing side wall 131 further includes a first L-shaped reinforcing wall 1311, which bends horizontally to the right and then vertically upward. The front bottom of the second reinforcing side wall 132 further includes a second L-shaped reinforcing wall 1321, which bends horizontally to the left and then vertically upward. These first and second L-shaped reinforcing walls 1311 and 1321 further enhance the overall load-bearing capacity of the first fork leg 13, providing a more secure and stable structure. The front end of the first front straight portion 251 further bends rightward and includes a first reinforcing connecting portion 2511, which is fixedly connected to the rear end of the first L-shaped reinforcing wall 1311. This first reinforcing connecting portion 2511 prevents accidental deformation of the first L-shaped reinforcing wall 1311, providing a more secure and stable structure. The front end of the second front straight portion 261 is also bent to the left and extended to form a second reinforcing connection portion 2611. The second reinforcing connection portion 2611 is fixedly connected to the rear end of the second L-shaped reinforcing wall 1321. The second reinforcing connection portion 2611 can prevent the second L-shaped reinforcing wall 1321 from being accidentally deformed, and the structure is more solid and stable.

[0038] Furthermore, the left side of the second fork leg 14 is bent downward to form a third reinforcing side wall 141, and the right side of the second fork leg 14 is bent downward to form a fourth reinforcing side wall 142. The reinforcement of the third and fourth reinforcing side walls 141, 142 improves the overall load-bearing capacity of the second fork leg 14, making the structure more secure and reliable. The left side of the third front straight portion 271 is fixedly connected to the right rear end of the third reinforcing side wall 141, while the right side of the fourth front straight portion 281 is fixedly connected to the left rear end of the fourth reinforcing side wall 142, further strengthening the structure. Furthermore, the front bottom of the third reinforcing side wall 141 further comprises a third L-shaped reinforcing wall 1411, which bends horizontally to the right and then bends vertically upward. The front bottom of the fourth reinforcing side wall 142 further comprises a fourth L-shaped reinforcing wall 1421, which bends horizontally to the left and then bends vertically upward. These third and fourth L-shaped reinforcing walls 1411 and 1421 further enhance the overall load-bearing capacity of the second fork leg 14, providing a more secure and stable structure. The front end of the third front straight portion 271 further bends rightward and forms a third reinforcing connecting portion 2711, which is fixedly connected to the rear end of the third L-shaped reinforcing wall 1411. This third reinforcing connecting portion 2711 prevents accidental deformation of the third L-shaped reinforcing wall 1411, providing a more secure and stable structure. The front end of the fourth front straight portion 281 is also bent to the left and extended to form a fourth reinforcing connection portion 2811. The fourth reinforcing connection portion 2811 is fixedly connected to the rear end of the fourth L-shaped reinforcing wall 1421. The fourth reinforcing connection portion 2811 can prevent the fourth L-shaped reinforcing wall 1421 from accidental deformation, and the structure is more solid and stable.

[0039] With reference to the accompanying drawings, the assembly principle of the frame structure 100 of the present invention is described in detail:

[0040] First, the lower end of the first support arm 11 is vertically fixed and welded to the front end of the first fork leg 13. The lower end of the second support arm 12 is vertically fixed and welded to the front end of the second fork leg 14. The first support arm 11 and the second support arm 12 are spaced apart and aligned in the left-right direction, and the first fork leg 13 and the second fork leg 14 are spaced apart and aligned in the left-right direction. Then, the crossbeam 15 is fixed and welded between the front ends of the first fork leg 13 and the front ends of the second fork leg 14. The support beam 16 is fixedly connected between the top ends of the first support arm 11 and the top ends of the second support arm 12 by bolts. The front cover 17 is then fixedly welded between the front side of the first support arm 11 and the front side of the second support arm 12, and the rear cover 18 is detachably installed between the rear side of the first support arm 11 and the rear side of the second support arm 12 by bolt fastening. A battery accommodating cavity 19 is formed between the front cover 17, the first support arm 11, the rear cover 18 and the second support arm 12, thereby completing the assembly operation of the frame structure 100 of the present invention.

[0041] For example, in this embodiment, the frame structure 100 of the present invention can be optionally installed on a transport vehicle (not shown in the figure), so as to realize the function of carrying goods on the transport vehicle of the present invention, but the specific application of the frame structure 100 of the present invention is not limited to this and will not be described in detail here.

[0042] In the frame structure 100 of the present invention, the lower end of the first support arm 11 is vertically fixedly connected to the front end of the first fork leg 13, the lower end of the second support arm 12 is vertically fixedly connected to the front end of the second fork leg 14, and the first support arm 11 and the second support arm 12 are spaced apart and aligned in the left-right direction. The first fork leg 13 and the second fork leg 14 are spaced apart and aligned in the left-right direction. The crossbeam 15 is fixedly connected between the front end of the first fork leg 13 and the front end of the second fork leg 14. The support beam 16 is fixedly connected between the top end of the first support arm 11 and the top end of the second support arm 12. The front cover 17 is fixedly connected between the front side of the first support arm 11 and the front side of the second support arm 12. The rear cover 18 is detachably mounted between the rear side of the first support arm 11 and the rear side of the second support arm 12. A battery compartment 19 is formed between the front cover 17, the first support arm 11, the rear cover 18, and the second support arm 12. On the one hand, the frame structure 100 of the present invention is simpler, more stable and stronger, and the manufacturing cost is greatly reduced. The rear cover 18 is detachably mounted between the rear side of the first support arm 11 and the rear side of the second support arm 12, making it easier to maintain, greatly reducing maintenance costs and significantly extending the service life. On the other hand, it is more convenient to spray different colors on the support beam 16 and the rear cover 18, avoiding the problem of staggered and uneven spray colors at the connections between adjacent different components, making spraying colors more convenient and making the frame structure 100 of the present invention more beautiful. Since the transport vehicle of the present invention has the above-mentioned frame structure 100 of the present invention, the transport vehicle of the present invention also has the advantages of simple structure, stable and stronger structure, low manufacturing cost, low maintenance cost, long service life and convenient spraying color.

[0043] The present invention is described above in conjunction with the embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A frame structure, characterized in that: include: a first support arm, a second support arm, a first fork leg, a second fork leg, a cross beam, a support beam, a front cover plate, and a rear cover plate, The lower end of the first support arm is vertically fixedly connected to the front end of the first fork leg, and the lower end of the second support arm is vertically fixedly connected to the front end of the second fork leg, and the first support arm and the second support arm are spaced apart and aligned in the left-right direction, and the first fork leg and the second fork leg are spaced apart and aligned in the left-right direction; The cross beam is fixedly connected between the front end of the first fork leg and the front end of the second fork leg, and the support beam is fixedly connected between the top end of the first support arm and the top end of the second support arm; The front cover is fixedly connected between the front side of the first support arm and the front side of the second support arm, and the rear cover is detachably installed between the rear side of the first support arm and the rear side of the second support arm. A battery accommodating cavity is formed between the front cover, the first support arm, the rear cover and the second support arm.

2. The frame structure according to claim 1, wherein: The support beam includes a middle connecting plate, a front side plate and a rear side plate. The middle connecting plate is arranged horizontally, the front side plate is vertically fixedly connected to the front side of the middle connecting plate, and the rear side plate is vertically fixedly connected to the rear side of the middle connecting plate. The front side plate and the rear side plate are aligned in the front-to-back direction.

3. The frame structure according to claim 2, wherein: The middle connecting plate, the front side plate and the rear side plate are integrally formed by stamping or welded to form a connection structure.

4. The frame structure according to claim 2, wherein: The middle connecting plate, the front side plate and the rear side plate are all in an arched structure with both ends bent downward.

5. The vehicle frame structure according to claim 4, wherein: The left end of the middle connecting plate forms a first vertical connecting portion, and the right end of the middle connecting plate forms a second vertical connecting portion; The top end of the first support arm extends forward to form a third vertical connection portion, and the top end of the second support arm extends forward to form a fourth vertical connection portion; The first vertical connection portion is fixedly connected to the third vertical connection portion, and the second vertical connection portion is fixedly connected to the fourth vertical connection portion.

6. The vehicle frame structure according to claim 1, wherein: Also includes: A first bent connecting arm, a first vertical reinforcing plate, a second bent connecting arm and a second vertical reinforcing plate, the lower end of the first bent connecting arm is vertically fixedly connected to the top of the front end of the first fork leg, the upper end of the first bent connecting arm is horizontally fixedly connected to the left side of the lower end of the first support arm, the first vertical reinforcing plate is vertically fixedly connected to the first bent connecting arm, the top of the front end of the first fork leg and the left side of the lower end of the first support arm; the lower end of the second bent connecting arm is vertically fixedly connected to the top of the front end of the second fork leg, the upper end of the second bent connecting arm is horizontally fixedly connected to the right side of the lower end of the second support arm, and the second vertical reinforcing plate is vertically fixedly connected to the second bent connecting arm, the top of the front end of the second fork leg and the right side of the lower end of the second support arm.

7. The vehicle frame structure according to claim 1, wherein: Also includes: The first bent reinforcement plate, the second bent reinforcement plate, the third bent reinforcement plate and the fourth bent reinforcement plate, the first bent reinforcement plate and the second bent reinforcement plate are both vertically fixedly connected to the bottom of the rear end of the first fork leg, and the length directions of the first bent reinforcement plate and the second bent reinforcement plate are both extended along the front-to-back direction; the third bent reinforcement plate and the fourth bent reinforcement plate are both vertically fixedly connected to the bottom of the rear end of the second fork leg, and the length directions of the third bent reinforcement plate and the fourth bent reinforcement plate are both extended along the front-to-back direction.

8. The vehicle frame structure according to claim 7, wherein: The first bent reinforcement plate includes a first front straight portion, a first inclined connecting portion and a first rear straight portion distributed sequentially from front to rear; the second bent reinforcement plate includes a second front straight portion, a second inclined connecting portion and a second rear straight portion distributed sequentially from front to rear, and the first inclined connecting portion and the second inclined connecting portion are arranged to be gradually approached from front to rear; the third bent reinforcement plate includes a third front straight portion, a third inclined connecting portion and a third rear straight portion distributed sequentially from front to rear; the fourth bent reinforcement plate includes a fourth front straight portion, a fourth inclined connecting portion and a fourth rear straight portion distributed sequentially from front to rear, and the first inclined connecting portion and the second inclined connecting portion are arranged to be gradually approached from front to rear.

9. The vehicle frame structure according to claim 8, wherein: The left side of the first fork leg is bent downward to form a first reinforcing side wall, and the right side of the first fork leg is bent downward to form a second reinforcing side wall; the left side of the first front straight portion is fixedly connected to the right side of the rear end of the first reinforcing side wall, and the right side of the second front straight portion is fixedly connected to the left side of the rear end of the second reinforcing side wall; the front end bottom of the first reinforcing side wall is also formed with a first L-shaped reinforcing wall that is bent horizontally to the right and then bent vertically upward, and the front end bottom of the second reinforcing side wall is also formed with a second L-shaped reinforcing wall that is bent horizontally to the left and then bent vertically upward; the front end of the first front straight portion is also bent to the right and extended to form a first reinforcing connecting portion, the first reinforcing connecting portion is fixedly connected to the rear end of the first L-shaped reinforcing wall; the front end of the second front straight portion is also bent to the left and extended to form a second reinforcing connecting portion, and the second reinforcing connecting portion is fixedly connected to the rear end of the second L-shaped reinforcing wall. The left side of the second fork leg is bent downward to form a third reinforcing side wall, and the right side of the second fork leg is bent downward to form a fourth reinforcing side wall; the left side of the third front straight portion is fixedly connected to the right side of the rear end of the third reinforcing side wall, and the right side of the fourth front straight portion is fixedly connected to the left side of the rear end of the fourth reinforcing side wall; the front end bottom of the third reinforcing side wall is also formed with a third L-shaped reinforcing wall that is bent horizontally to the right and then bent vertically upward, and the front end bottom of the fourth reinforcing side wall is also formed with a fourth L-shaped reinforcing wall that is bent horizontally to the left and then bent vertically upward; the front end of the third front straight portion is also bent to the right and extended to form a third reinforcing connecting portion, and the third reinforcing connecting portion is fixedly connected to the rear end of the third L-shaped reinforcing wall; the front end of the fourth front straight portion is also bent to the left and extended to form a fourth reinforcing connecting portion, and the fourth reinforcing connecting portion is fixedly connected to the rear end of the fourth L-shaped reinforcing wall.

10. A transport vehicle, characterized in that: The transport vehicle comprises the frame structure according to any one of claims 1 to 9.

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