Folding boarding device and using method thereof

Abstract

The invention belongs to the technical field of vehicle-mounted equipment, and relates to a folding boarding device and a using method thereof. The folding assembly comprises a fixed base, a turnover connecting beam, a pedal limiting connecting rod, a turnover limiting connecting rod and a pedal connecting assembly, and one end of the turnover connecting beam and the fixed base achieve first-stage folding or first-stage unfolding by inserting and pulling out a first quick release pin; the other end of the turnover connecting beam and the first end of the pedal connecting assembly achieve second-stage folding or second-stage unfolding by inserting and pulling out a second quick-release pin. Three-stage folding or three-stage unfolding is achieved through mutual cooperation of the pedal connecting assemblies and the pedal limiting connecting rods, the risk of deformation caused by corrosion and collision is avoided, the occupied space is small during folding, and storage is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle-mounted equipment and relates to a folding boarding device and a use method thereof. Background Art

[0002] A boarding device is a staircase structure used on a vehicle, mainly to meet the needs of people getting on and off the vehicle. Traditional boarding devices are usually fixedly installed on vehicles, such as trucks, buses or RVs. The telescopic ladder is not retractable and foldable, and is fixedly installed on the outside of the vehicle or on the door.

[0003] Existing boarding ladders are more suitable for large vehicles, and are only used to meet the boarding function. The exposed boarding ladders are also prone to rust and collision damage, and will also affect the width of the vehicle. In addition, the existing boarding devices are mostly multi-step pedal boarding ladders, which only consider the up and down use function of personnel, and do not consider the up and down function of single or double people carrying goods, and the storage capacity is relatively poor.

[0004] In this regard, a Chinese utility model patent with application number 202223149925.1 and publication date 2023.04.25 discloses a boarding ladder with a storage and hiding function. The boarding ladder has a storage and hiding function and can be hidden in a base plate in a folded and stored state. During the unfolding process, the pedal unfolds from the storage and hiding state to the ladder state; however, for this boarding ladder with a storage and hiding function, although it is protected by a base plate, there is still a risk of rust, and there is a possibility of deformation of the base plate after a collision, which affects the storage or unfolding of the pedal.

[0005] The Chinese utility model patent with application number 202320715808.2 and publication date of July 28, 2023, discloses a hidden boarding ladder, which includes a fixed track assembly and a ladder frame assembly. The ladder frame assembly is stored inside the fixed track assembly in the storage state, and the pedal assembly extends and lowers the pedal through the fixed track assembly during the deployment process. For this hidden boarding ladder, the boarding ladder is stored under the vehicle body, but is exposed to the outside, which is prone to rust, and there is a possibility of track deformation and ladder frame deformation after a collision, affecting the deployment and retraction of the ladder frame. Moreover, neither of them considers the function of two people carrying goods up and down, and only satisfies the function of one person getting on and off the vehicle. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and to provide a folding boarding device and a method of using the same.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A folding boarding device comprises a folding assembly and a pedal assembly, wherein the folding assembly is located at both ends of the pedal assembly;

[0009] The folding assembly includes a fixed base, a flip connecting beam, a pedal limiting connecting rod, a flip limiting connecting rod and a pedal connecting assembly. One end of the flip connecting beam and the fixed base are connected by plugging and pulling out a first quick-release pin to achieve first-level folding or first-level unfolding; the other end of the flip connecting beam and the first end of the pedal connecting assembly are connected by plugging and pulling out a second quick-release pin to achieve second-level folding or second-level unfolding; and third-level folding or third-level unfolding is achieved through the mutual cooperation between the pedal connecting assembly and the pedal limiting connecting rod.

[0010] Further, the fixed base includes a base longitudinal beam, the lower end of the base longitudinal beam is connected to the base bottom plate, and the upper end of the base longitudinal beam is connected to the base cross beam; a plurality of mounting holes are provided on the base bottom plate, a first quick-release pin mounting hole is provided on the base longitudinal beam, and a first pin shaft mounting hole and a second quick-release pin mounting hole are provided on the base cross beam, and the first quick-release pin mounting hole is aligned left and right with the first pin shaft mounting hole.

[0011] Furthermore, reinforcing ribs are provided between the base longitudinal beam and the base bottom plate.

[0012] Further, the flip connection beam comprises a connection area, one end of the connection area is provided with a first mounting hole setting area, the other end of the connection area is provided with a second mounting hole setting area, and the longitudinal sections of the first mounting hole setting area, the connection area and the second mounting hole setting area are all U-shaped;

[0013] The first mounting hole setting area includes rectangular hole setting areas symmetrically arranged front and back, the upper ends of the two rectangular hole setting areas are transitionally connected with a first crossbeam, the upper parts of the two rectangular hole setting areas are each provided with a second pin shaft mounting hole, and a third quick release pin mounting hole is provided below each of the second pin shaft mounting holes;

[0014] The second mounting hole setting area includes special-shaped hole position setting areas that are symmetrically arranged front and back, the upper ends of the two special-shaped hole position setting areas are transitionally connected with a second crossbeam, and the third pin shaft mounting hole, the fourth quick-release pin mounting hole, and the fourth pin shaft mounting hole are arranged in the special-shaped hole position setting area. The third pin shaft mounting hole and the fourth quick-release pin mounting hole are located in the lower half of the second mounting hole setting area, and the fourth quick-release pin mounting hole is set as the origin, and the fourth pin shaft mounting hole is located in the first quadrant;

[0015] The connection area includes a rectangular connection area symmetrically arranged front and back, the upper end of the rectangular connection area is transitionally connected to a third crossbeam, the first end of the third crossbeam is transitionally connected to the first crossbeam, and the second end of the third crossbeam is transitionally connected to the second crossbeam; the first end of the rectangular connection area is transitionally connected to the rectangular hole position setting area, and the second end of the rectangular connection area is transitionally connected to the special-shaped hole position setting area;

[0016] The second pin shaft mounting hole matches with the first pin shaft mounting hole; when the flip connecting beam is in the first-level unfolding state, the third quick-release pin mounting hole and the first quick-release pin mounting hole are inserted with the same first quick-release pin to achieve fixation; when the flip connecting beam is in the first-level folding state, the third quick-release pin mounting hole and the second quick-release pin mounting hole are inserted with the same first quick-release pin.

[0017] Further, the pedal connection assembly is a rectangular parallelepiped structure, and the pedal connection assembly includes a fifth pin shaft mounting hole and a fifth quick-release pin mounting hole, the fifth pin shaft mounting hole is located at the first end of the pedal connection assembly, and the fifth pin shaft mounting hole is matched with the third shaft mounting hole; the fifth quick-release pin mounting hole is located below the fifth pin shaft mounting hole, and when the flip connection beam is in the secondary folding state, the fourth quick-release pin mounting hole and the fifth quick-release pin mounting hole are inserted with the same second quick-release pin;

[0018] Furthermore, the fifth pin shaft mounting hole and the fifth quick pin mounting hole both pass through the first side surface and the second side surface opposite to the first side surface, a first groove is opened on the third side surface of the rectangular parallelepiped structure, and first long holes are opened on both side walls of the first groove; a second groove is also opened on the third side surface of the rectangular parallelepiped structure, the second groove is located below the first groove, second long holes are opened on both side walls of the second groove, a sixth quick release pin mounting hole is arranged below the second long hole, and a connecting ear is arranged at the second end of the pedal connecting assembly, and a sixth pin shaft mounting hole is arranged on the connecting ear.

[0019] Furthermore, a seventh pin shaft mounting hole is provided at the first end of the flip limit connecting rod, and an eighth pin shaft mounting hole is provided at the second end of the flip limit connecting rod. The first end of the flip limit connecting rod is placed in the first groove for sliding, and the seventh pin shaft mounting hole cooperates with the first long hole through the first pin shaft, and the eighth pin shaft mounting hole cooperates with the fourth pin shaft mounting hole through the second pin shaft.

[0020] Further, the pedal assembly includes a pedal, the pedal is a rectangular plate, a frame structure consisting of a pedal transverse side beam, a pedal longitudinal side beam, a pedal longitudinal auxiliary beam and a pedal transverse auxiliary beam is arranged below the pedal, the pedal transverse side beam is located on two short sides of the rectangular plate, the pedal longitudinal side beam is located on two long sides of the rectangular plate, a plurality of pedal longitudinal auxiliary beams are arranged in the rectangular plate, the pedal longitudinal auxiliary beams are parallel to the pedal longitudinal side beams, and a plurality of pedal transverse auxiliary beams are arranged between every two pedal longitudinal auxiliary beams and between the pedal longitudinal auxiliary beams and the pedal longitudinal side beams;

[0021] A first rotating ear shaft seat and a second rotating ear shaft seat are provided at both ends of the frame structure, the first rotating ear shaft seat and the second rotating ear shaft seat pass through the pedal, the first fixed ear piece on the second rotating ear shaft seat protrudes above the pedal, the second fixed ear piece on the first rotating ear shaft seat protrudes above the pedal, and the sixth pin shaft mounting hole cooperates with the first rotating ear shaft seat through the pin shaft.

[0022] Further, the pedal limit connecting rod comprises a connecting rod, a first pin shaft mounting position is connected to one side of the first end of the connecting rod, and the first pin shaft mounting position and the first end of the connecting rod have a smooth transition; a second pin shaft mounting position is connected to one side of the second end of the connecting rod, and the first pin shaft mounting position and the second pin shaft mounting position have opposite installation directions; a first pin shaft mounting hole is provided on the first pin shaft mounting position, and a second pin shaft mounting hole is provided on the second pin shaft mounting position;

[0023] The first pin shaft installation position slides in the second groove, the first pin shaft installation hole cooperates with the second elongated hole through the third pin shaft, and the second pin shaft installation hole cooperates with the ear hole of the first fixed ear piece through the pin shaft.

[0024] Furthermore, the present invention also provides a method for using the foldable boarding device. When the boarding device needs to be unfolded:

[0025] First, pull out the same first quick-release pin in the third quick-release pin installation hole and the first quick-release pin installation hole, and then insert the pulled out first quick-release pin through the third quick-release pin installation hole and the second quick-release pin installation hole;

[0026] Then, pull out the second quick-release pins in the fourth quick-release pin installation hole and the fifth quick-release pin installation hole, so that the second end of the flip limit connecting rod slides in the first groove until the second pin shaft slides to the upper part of the first long hole; the first pin shaft installation position slides in the second groove until the third pin shaft slides to the lower part of the second long hole;

[0027] Finally, pass the bolts through the mounting holes to secure the mounting base to the mounting surface.

[0028] When the boarding device needs to be folded:

[0029] First, remove the bolts that secure the mounting base to the mounting surface;

[0030] Then, pull out the same first quick-release pin in the third quick-release pin installation hole and the second quick-release pin installation hole, and then insert the pulled out first quick-release pin through the third quick-release pin installation hole and the first quick-release pin installation hole;

[0031] Finally, rotate the flip connecting beam to make the second end of the flip limit connecting rod slide in the first groove until the second pin shaft slides to the lower part of the first long hole, and insert the same second quick-release pin into the fourth quick-release pin mounting hole and the fifth quick-release pin mounting hole; rotate the pedal connecting assembly to make the first pin shaft mounting position slide in the second groove until the third pin shaft slides to the upper part of the second long hole.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention adopts a multi-stage folding mechanism structure design to realize the rapid folding and unfolding of the boarding device. The present invention has a strong load-bearing capacity when unfolded, which is convenient for one or two people to step on and carry goods. It is firm and durable, easy to use, and the pedal is a patterned plate with anti-slip protrusions, which has an anti-slip function;

[0034] 2. Through the multi-stage folding mechanism, the fixed base of the present invention can be disassembled through nuts, and can be folded and stored after disassembly. There is no risk of rust and deformation caused by collision. It takes up less space when folded and is easy to store. The folding structure of the present invention can effectively limit the position in both the unfolded state and the folded state.

[0035] 3. The fast folding boarding device provided by the present invention effectively compresses the space occupied by the boarding device in the folded state by flipping the three-level folding structure of the connecting beam, the pedal connecting assembly and the pedal assembly, which is conducive to the use of small spaces. Furthermore, the boarding device can be installed in a fixed position to avoid the need for people to carry it when using it, which is conducive to reducing labor intensity. Therefore, the present invention can effectively solve the need for two or one person to frequently climb up to work in a fixed position, reduce the labor intensity of people, and facilitate the use of small spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the present invention.

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 It is a schematic diagram of the overall structure of the foldable boarding device of the present invention;

[0039] Figure 2 It is a structural schematic diagram of the fixed base in the present invention;

[0040] Figure 3 It is a schematic diagram of the structure of the flip connection beam in the present invention;

[0041] Figure 4 It is a structural schematic diagram of the pedal limiting connecting rod in the present invention;

[0042] Figure 5 It is a front structural schematic diagram of the pedal assembly in the present invention;

[0043] Figure 6 It is a schematic diagram of the reverse structure of the pedal assembly in the present invention;

[0044] Figure 7 It is a structural schematic diagram of the flip limit connecting rod in the present invention;

[0045] Figure 8 It is a structural schematic diagram of the pedal connection assembly in the present invention;

[0046] Fig. 9 A schematic diagram of the folding state of the foldable boarding device of the present invention;

[0047] Fig.10 This is a schematic diagram of the primary unfolding state of the foldable boarding device of the present invention;

[0048] Fig.11 It is a schematic diagram of the secondary unfolding state of the foldable boarding device of the present invention;

[0049] Fig.12 It is a schematic diagram of the three-stage unfolding state of the foldable boarding device in the present invention.

[0050] Among them: 1 is a fixed base; 2 is a flip connecting beam; 2-1 is a first mounting hole setting area; 2-2 is a connecting area; 2-3 is a second mounting hole setting area; 2-11 is a rectangular hole position setting area; 2-12 is a first crossbeam; 2-31 is a special-shaped hole position setting area; 2-21 is a rectangular connecting area; 2-22 is a second crossbeam; 2-32 is a second crossbeam; 3 is a pedal limit connecting rod; 4 is a pedal assembly; 5 is a flip limit connecting rod; 6 is a pedal connecting assembly; 7 is a base bottom plate; 8 is a reinforcing rib; 9 is a first pin shaft mounting hole; 10 is a second quick release pin mounting hole; 11 is a base crossbeam; 12 is a mounting hole; 13 is a base longitudinal beam; 14 is a first quick release pin mounting hole; 15 is a second pin shaft mounting hole; 16 is a third quick release pin mounting hole; 17 is a third pin shaft mounting hole; 18 is a fourth quick release pin mounting hole; 19 is the fourth pin shaft mounting hole; 20 is the ninth pin shaft mounting hole; 21 is the tenth pin shaft mounting hole; 22 is the first rotating ear shaft seat; 23 is the pedal; 24 is the first fixed ear piece; 25 is the decorative plate; 26 is the pedal horizontal side beam; 27 is the pedal longitudinal side beam; 28 is the pedal longitudinal auxiliary beam; 29 is the pedal horizontal auxiliary beam; 30 is the second rotating ear shaft seat; 31 is the seventh pin shaft mounting hole; 32 is the eighth pin shaft mounting hole; 33 is the fifth pin shaft mounting hole; 34 is the fifth quick release pin mounting hole; 35 is the first long hole; 36 is the first groove; 37 is the second groove; 38 is the second long hole; 39 is the sixth quick release pin mounting hole; 40 is the sixth pin shaft mounting hole; 41 is the first quick release pin; 42 is the second quick release pin; 43 is the fifth quick release pin; 44 is the connecting rod; 45 is the first pin shaft mounting position; 46 is the second pin shaft mounting position. DETAILED DESCRIPTION

[0051] Here, exemplary embodiments will be described in detail, and the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of devices consistent with some aspects of the present invention as detailed in the appended claims.

[0052] Example

[0053] A folding boarding device, comprising a folding assembly and a pedal assembly 4, wherein the folding assembly is located at both ends of the pedal assembly 4;

[0054] The folding assembly includes a fixed base 1, a flip connecting beam 2, a pedal limit connecting rod 3, a flip limit connecting rod 5 and a pedal connecting assembly 6. One end of the flip connecting beam 2 and the fixed base 1 can realize first-level folding or first-level unfolding by plugging and pulling out a first quick-release pin 41; the other end of the flip connecting beam 2 and the first end of the pedal connecting assembly 6 can realize second-level folding or second-level unfolding by plugging and pulling out a second quick-release pin 42; and third-level folding or third-level unfolding is realized through the mutual cooperation between the pedal connecting assembly 6 and the pedal limit connecting rod 3.

[0055] like Figure 1 As shown, the boarding device is mainly composed of a fixed base 1, a flip connecting beam 2, a pedal limit connecting rod 3, a pedal assembly 4, a flip limit connecting rod 5 and a pedal connecting assembly 6.

[0056] Furthermore, the fixed base 1 includes a base longitudinal beam 13, the lower end of the base longitudinal beam 13 is connected to the base bottom plate 7, and the upper end of the base longitudinal beam 13 is connected to the base cross beam 11; a plurality of mounting holes 12 are provided on the base bottom plate 7, a first quick-release pin mounting hole 14 is provided on the base longitudinal beam 13, and a first pin shaft mounting hole 9 and a second quick-release pin mounting hole 10 are provided on the base cross beam 11, and the first quick-release pin mounting hole 14 is aligned left and right with the first pin shaft mounting hole 9.

[0057] Furthermore, a reinforcing rib 8 is provided between the base longitudinal beam 13 and the base bottom plate 7 .

[0058] like Figure 2 As shown, the fixed base 1 is composed of a base bottom plate 7, a reinforcing rib 8, a base cross beam 11, a base longitudinal beam 13, etc. The fixed base 1 is provided with a mounting hole 12, and the boarding device can be fixed firmly to the mounting plane by bolts. The fixed base 1 is provided with a first pin shaft mounting hole 9 that cooperates with the flip connecting beam 2; the fixed base 1 is provided with a second quick-release pin mounting hole 10 in the unfolded state of the flip connecting beam 2; the fixed base 1 is provided with a first quick-release pin mounting hole 14 in the folded state of the flip connecting beam 2. The reinforcing rib 8 plays a role in strengthening the structure while taking into account the mechanical limit of the flip connecting beam 2 folded into place.

[0059] Further, the flip connection beam 2 includes a connection area 2-2, one end of the connection area 2-2 is provided with a first mounting hole setting area 2-1, the other end of the connection area 2-2 is provided with a second mounting hole setting area 2-3, and the longitudinal sections of the first mounting hole setting area 2-1, the connection area 2-2 and the second mounting hole setting area 2-3 are all U-shaped;

[0060] The first mounting hole setting area 2-1 includes rectangular hole setting areas 2-11 symmetrically arranged front and back, the upper ends of the two rectangular hole setting areas 2-11 are transitionally connected with a first crossbeam 2-12, the upper parts of the two rectangular hole setting areas 2-11 are both provided with a second pin shaft mounting hole 15, and each of the second pin shaft mounting holes 15 is provided with a third quick release pin mounting hole 16 below;

[0061] The second mounting hole setting area 2-3 includes a special-shaped hole position setting area 2-31 that is symmetrically arranged in front and back, and the upper ends of the two special-shaped hole position setting areas 2-31 are transitionally connected with a second crossbeam 2-32. The third pin shaft mounting hole 17, the fourth quick release pin mounting hole 18, and the fourth pin shaft mounting hole 19 are arranged in the special-shaped hole position setting area 2-31. The third pin shaft mounting hole 17 and the fourth quick release pin mounting hole 18 are located in the lower half of the second mounting hole setting area 2-3, and the fourth quick release pin mounting hole 18 is set as the origin. The fourth pin shaft mounting hole 19 is located in the first quadrant;

[0062] The connection area 2-2 includes a rectangular connection area 2-21 symmetrically arranged front and back, the upper end of the rectangular connection area is transitionally connected with a third crossbeam 2-22, the first end of the third crossbeam 2-22 is transitionally connected with the first crossbeam 2-12, and the second end of the third crossbeam 2-22 is transitionally connected with the second crossbeam 2-32; the first end of the rectangular connection area 2-21 is transitionally connected with the rectangular hole position setting area 2-11, and the second end of the rectangular connection area 2-21 is transitionally connected with the special-shaped hole position setting area 2-31;

[0063] The second pin shaft mounting hole 15 cooperates with the first pin shaft mounting hole 9; when the flip connecting beam 2 is in the first-level unfolding state, the third quick-release pin mounting hole 16 and the first quick-release pin mounting hole 14 are inserted with the same first quick-release pin 41 to achieve fixation; when the flip connecting beam 2 is in the first-level folding state, the third quick-release pin mounting hole 16 and the second quick-release pin mounting hole 10 are inserted with the same first quick-release pin 41.

[0064] like Figure 3 As shown, the flip connecting beam 2 is provided with a second pin shaft mounting hole 15 which cooperates with the fixed base 1; the flip connecting beam 2 is provided with a third quick-release pin mounting hole 16 which cooperates with the fixed base 1 when it is in a folded or unfolded state; the flip connecting beam 2 is provided with a third pin shaft mounting hole 17 which cooperates with the pedal connecting assembly 6; the flip connecting beam 2 is provided with a fourth quick-release pin mounting hole 18 when the pedal connecting assembly 6 is in a folded state; the flip connecting beam 2 is provided with a fourth pin shaft mounting hole 19 which cooperates with the flip limit connecting rod 5.

[0065] Further, the pedal connection assembly 6 is a rectangular parallelepiped structure, and the pedal connection assembly 6 includes a fifth pin shaft mounting hole 33 and a fifth quick-release pin mounting hole 34. The fifth pin shaft mounting hole 33 is located at the first end of the pedal connection assembly 6, and the fifth pin shaft mounting hole 33 is matched with the third shaft mounting hole 17; the fifth quick-release pin mounting hole 34 is located below the fifth pin shaft mounting hole 33, and when the flip connection beam 2 is in the secondary folding state, the fourth quick-release pin mounting hole 18 and the fifth quick-release pin mounting hole 34 are inserted with the same second quick-release pin 42;

[0066] Furthermore, the fifth pin shaft mounting hole 33 and the fifth quick-release pin mounting hole 34 both pass through the first side surface and the second side surface opposite to the first side surface, a first groove 36 is provided on the third side surface of the rectangular parallelepiped structure, and first elongated holes 35 are provided on both side walls of the first groove 36; a second groove 37 is also provided on the third side surface of the rectangular parallelepiped structure, the second groove 37 is located below the first groove 36, second elongated holes 38 are provided on both side walls of the second groove 37, a sixth quick-release pin mounting hole 39 is provided below the second elongated hole 38, and a connecting ear is provided at the second end of the pedal connecting assembly 6, and a sixth pin shaft mounting hole 40 is provided on the connecting ear.

[0067] like Figure 8 As shown, the pedal connecting assembly 6 is provided with a fifth pin shaft mounting hole 33 which cooperates with the flip connecting beam 2; the pedal connecting assembly 6 is provided with a fifth quick-release pin mounting hole 34 which cooperates with the flip connecting beam 2 when the pedal connecting assembly 6 is in the folded state; the pedal connecting assembly 6 is provided with a first elongated hole 35 for the pin shaft movement of the flip limiting connecting rod 5; the pedal connecting assembly 6 is provided with a first groove 36 for the movement of the flip limiting connecting rod 5; the pedal connecting assembly 6 is provided with a second groove 37 for the movement of the pedal limiting connecting rod 3; the pedal connecting assembly 6 is provided with a second elongated hole 38 for the pin shaft movement of the pedal limiting connecting rod 3; the pedal connecting assembly 6 is provided with a sixth quick-release pin mounting hole 39 which cooperates with the first fixed ear piece 24 when the pedal assembly 4 is in the folded state; the pedal connecting assembly 6 is provided with a sixth pin shaft mounting hole 40 which cooperates with the pedal assembly 4.

[0068] Furthermore, a seventh pin mounting hole 31 is provided at the first end of the flip limit connecting rod 5, and an eighth pin mounting hole 32 is provided at the second end of the flip limit connecting rod 5. The first end of the flip limit connecting rod 5 is placed in the first groove 36 for sliding, and the seventh pin mounting hole 31 cooperates with the first long hole 35 through the first pin, and the eighth pin mounting hole 32 cooperates with the fourth pin mounting hole 19 through the second pin.

[0069] like Figure 7 As shown, the flip limit connecting rod 5 is provided with a seventh pin shaft mounting hole 31 cooperating with the pedal connecting assembly 6 ; the pedal limit connecting rod 3 is provided with an eighth pin shaft mounting hole 32 cooperating with the flip connecting beam 2 .

[0070] Further, the pedal assembly 4 includes a pedal 23, the pedal 23 is a rectangular plate, and a frame structure consisting of a pedal transverse side beam 26, a pedal longitudinal side beam 27, a pedal longitudinal auxiliary beam 28 and a pedal transverse auxiliary beam 29 is arranged below the pedal 23, the pedal transverse side beam 26 is located on the two short sides of the rectangular plate, the pedal longitudinal side beam 27 is located on the two long sides of the rectangular plate, a plurality of pedal longitudinal auxiliary beams 28 are arranged in the rectangular plate, the pedal longitudinal auxiliary beams 28 and the pedal longitudinal side beams 27 are parallel to each other, and a plurality of pedal transverse auxiliary beams 29 are arranged between every two pedal longitudinal auxiliary beams 28 and between the pedal longitudinal auxiliary beams 28 and the pedal longitudinal side beams 27;

[0071] The first rotating ear shaft seat 22 and the second rotating ear shaft seat 30 are provided at both ends of the frame structure. The first rotating ear shaft seat 22 and the second rotating ear shaft seat 30 pass through the pedal 23. The first fixed ear piece 24 on the second rotating ear shaft seat 30 protrudes above the pedal 23. The second fixed ear piece on the first rotating ear shaft seat 22 protrudes above the pedal 23. The sixth pin shaft mounting hole 40 cooperates with the first rotating ear shaft seat 22 through the pin shaft.

[0072] like Figure 5 and Figure 6 As shown, the pedal assembly 4 is mainly composed of a first rotating trunnion seat 22, a pedal 23, a first fixed ear piece 24, a decorative plate 25, a pedal transverse side beam 26, a pedal longitudinal side beam 27, a pedal longitudinal auxiliary beam 28, a pedal transverse auxiliary beam 29, and a second rotating trunnion seat 30. The pedal transverse side beam 26, the pedal longitudinal side beam 27, the pedal longitudinal auxiliary beam 28, and the pedal transverse auxiliary beam 29 are welded to form a frame structure, and the first rotating trunnion seat 22 and the second rotating trunnion seat 30 are welded on the frame, and the pedal 23 and the decorative plate 25 are riveted, and the first fixed ear piece 24 is connected to the decorative plate 25 by bolts and nuts. The first rotating trunnion seat 22 cooperates with the pedal limit connecting rod 3 to realize the rotation of the pedal limit connecting rod 3, and the second rotating trunnion seat 30 cooperates with the pedal connecting assembly 6 to realize the rotation of the pedal assembly 4.

[0073] Further, the pedal limit connecting rod 3 includes a connecting rod 44, one side of the first end of the connecting rod 44 is connected to a first pin shaft mounting position 45, and the first pin shaft mounting position 45 and the first end of the connecting rod 44 have a smooth transition; one side of the second end of the connecting rod 44 is connected to a second pin shaft mounting position 46, and the first pin shaft mounting position 45 and the second pin shaft mounting position 46 have opposite installation directions; the first pin shaft mounting position 45 is provided with a ninth pin shaft mounting hole 20, and the second pin shaft mounting position 46 is provided with a tenth pin shaft mounting hole 21;

[0074] The first pin shaft mounting position 45 is placed in the second groove 37 to slide, the ninth pin shaft mounting hole 20 is matched with the second long hole 38 through the third pin shaft, and the tenth pin shaft mounting hole 21 is matched with the ear hole of the first fixing ear piece 24 through the pin shaft.

[0075] like Figure 4 As shown, the pedal limiting connecting rod 3 is provided with a ninth pin shaft mounting hole 20 cooperating with the pedal connecting assembly 6 ; the pedal limiting connecting rod 3 is provided with a tenth pin shaft mounting hole 21 cooperating with the pedal assembly 4 .

[0076] Furthermore, if Figure 9-12 As shown, the present invention also provides a method for using the foldable boarding device.

[0077] When the boarding device needs to be deployed:

[0078] First, remove the first quick release pin 41 in the third quick release pin mounting hole 16 and the first quick release pin mounting hole 14, and then insert the removed first quick release pin 41 through the third quick release pin mounting hole 16 and the second quick release pin mounting hole 10;

[0079] Then, the second quick-release pin 42 in the fourth quick-release pin installation hole 18 and the fifth quick-release pin installation hole 34 is pulled out, so that the second end of the flip limit connecting rod 5 slides in the first groove 36 until the second pin shaft slides to the upper part of the first long hole 35; the fifth quick-release pin 43 in the tenth pin shaft installation hole 21 and the first fixing ear piece 24 is pulled out, so that the first pin shaft installation position 45 is placed in the second groove 37 and slides until the third pin shaft slides to the lower part of the second long hole 38;

[0080] Finally, the bolts are passed through the mounting holes 12 to fix the fixing base 1 to the mounting plane.

[0081] When the boarding device needs to be folded:

[0082] First, remove the bolts that secure the fixed base 1 to the mounting plane;

[0083] Then, remove the first quick-release pin 41 in the third quick-release pin mounting hole 16 and the second quick-release pin mounting hole 10, and then insert the removed first quick-release pin 41 through the third quick-release pin mounting hole 16 and the first quick-release pin mounting hole 14;

[0084] Finally, rotate the flip connecting beam 2 to make the second end of the flip limiting connecting rod 5 slide in the first groove 36 until the second pin shaft slides to the lower part of the first elongated hole 35, and insert the same second quick-release pin 42 into the fourth quick-release pin mounting hole 18 and the fifth quick-release pin mounting hole 34; rotate the pedal connecting assembly 6 to place the first pin shaft mounting position 45 in the second groove 37 and slide until the third pin shaft slides to the upper part of the second elongated hole 38, and insert the fifth quick-release pin 43 into the tenth pin shaft mounting hole 21 and the first fixed ear piece 24.

[0085] Specific:

[0086] The process of the present invention from the folded state to the unfolded state is as follows:

[0087] a) If Fig. 9 As shown, pull out the first quick-release pin 41 between the fixed base 1 and the flip connecting beam 2;

[0088] b) If Fig.10 As shown, after the flip connection beam 2 is rotated to the unfolded state, the first quick release pin 41 is inserted between the fixed base 1 and the flip connection beam 2; the second quick release pin 42 between the flip connection beam 2 and the pedal connection assembly 6 is pulled out;

[0089] c) If Fig.11 As shown, the pedal connection assembly 6 rotates, the pin shaft slides into place in the first elongated hole 35, and the flip limit connecting rod 5 rotates with the pin shaft in the elongated hole 36 to the unfolded state;

[0090] d) If Fig.12 As shown, the fifth quick-release pin 43 between the pedal assembly 4 and the pedal connecting assembly 6 is unplugged, the pedal assembly 4 is rotated, the pin shaft slides into place in the second elongated hole 38, the pedal limiting connecting rod 3 rotates into place in the second groove 37 along with the pin shaft, the pedal assembly 4 is rotated to the unfolded state, and the present invention is unfolded from the folded state to the unfolded state.

[0091] The process of folding the present invention from the unfolded state to the folded state is as follows:

[0092] a) If Fig.12 As shown, the pedal assembly 4 is manually rotated, the pin shaft slides into place in the second elongated hole 38, the pedal limit connecting rod 3 rotates into place in the second groove 37 along with the pin shaft, and the fifth quick-release pin 43 is inserted between the pedal assembly 4 and the pedal connecting assembly 6;

[0093] b) If Fig.11 As shown, the pedal connection assembly 6 is manually rotated, the pin shaft slides into place in the first elongated hole 35, the flip limit connecting rod 5 rotates with the pin shaft in the first groove 36 to the folded state, and the second quick release pin 42 is inserted between the flip connection beam 2 and the pedal connection assembly 6;

[0094] c) If Fig.10 As shown, unplug the first quick-release pin 41 between the fixed base 1 and the flip connecting beam 2, manually rotate the flip connecting beam 2 to the folded state, insert the first quick-release pin 41 between the fixed base 1 and the flip connecting beam 2, and the present invention is folded from the unfolded state to the folded state.

[0095] The process of the present invention for two persons to carry goods in and out of a carriage is as follows:

[0096] a) unfolding the present invention from a folded state to an unfolded state;

[0097] b) Two persons step on the left and right sides of the patterned plate 23 respectively;

[0098] c) Personnel move the goods from the ground to the carriage or from the carriage to the ground.

[0099] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0100] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A folding boarding device, characterized in that: It comprises a folding assembly and a pedal assembly (4), wherein the folding assembly is located at two ends of the pedal assembly (4); The folding assembly comprises a fixed base (1), a flip connection beam (2), a pedal limit connection rod (3), a flip limit connection rod (5) and a pedal connection assembly (6); one end of the flip connection beam (2) and the fixed base (1) are connected by plugging in and out a first quick-release pin (41) to achieve a first-stage folding or a first-stage unfolding; the other end of the flip connection beam (2) and the first end of the pedal connection assembly (6) are connected by plugging in and out a second quick-release pin (42) to achieve a second-stage folding or a second-stage unfolding; and the pedal connection assembly (6) and the pedal limit connection rod (3) cooperate with each other to achieve a third-stage folding or a third-stage unfolding.

2. A folding boarding device according to claim 1, characterized in that: The fixed base (1) comprises a base longitudinal beam (13), the lower end of the base longitudinal beam (13) is connected to the base bottom plate (7), and the upper end of the base longitudinal beam (13) is connected to the base cross beam (11); the base bottom plate (7) is provided with a plurality of mounting holes (12), the base longitudinal beam (13) is provided with a first quick-release pin mounting hole (14), and the base cross beam (11) is provided with a first pin shaft mounting hole (9) and a second quick-release pin mounting hole (10), and the first quick-release pin mounting hole (14) is aligned with the first pin shaft mounting hole (9) in left-right direction.

3. A folding boarding device according to claim 2, characterized in that: A reinforcing rib (8) is provided between the base longitudinal beam (13) and the base bottom plate (7).

4. A folding boarding device according to claim 2, characterized in that: The flip connection beam (2) comprises a connection area (2-2), one end of the connection area (2-2) is provided with a first mounting hole setting area (2-1), the other end of the connection area (2-2) is provided with a second mounting hole setting area (2-3), and the longitudinal sections of the first mounting hole setting area (2-1), the connection area (2-2) and the second mounting hole setting area (2-3) are all U-shaped; The first mounting hole setting area (2-1) comprises rectangular hole position setting areas (2-11) arranged symmetrically in front and back, the upper ends of the two rectangular hole position setting areas (2-11) are transitionally connected with a first crossbeam (2-12), the upper parts of the two rectangular hole position setting areas (2-11) are both provided with a second pin shaft mounting hole (15), and a third quick-release pin mounting hole (16) is provided below each of the second pin shaft mounting holes (15); The second mounting hole setting area (2-3) comprises a special-shaped hole position setting area (2-31) symmetrically arranged in front and back, the upper ends of the two special-shaped hole position setting areas (2-31) are transitionally connected with a second crossbeam (2-32), and the special-shaped hole position setting area (2-31) is provided with a third pin shaft mounting hole (17), a fourth quick release pin mounting hole (18), and a fourth pin shaft mounting hole (19), the third pin shaft mounting hole (17) and the fourth quick release pin mounting hole (18) are located in the lower half of the second mounting hole setting area (2-3), and the fourth quick release pin mounting hole (18) is set as the origin, and the fourth pin shaft mounting hole (19) is located in the first quadrant; The connection area (2-2) comprises a rectangular connection area (2-21) symmetrically arranged front and back, the upper end of the rectangular connection area is transitionally connected to a third crossbeam (2-22), the first end of the third crossbeam (2-22) is transitionally connected to the first crossbeam (2-12), and the second end of the third crossbeam (2-22) is transitionally connected to the second crossbeam (2-32); the first end of the rectangular connection area (2-21) is transitionally connected to the rectangular hole position setting area (2-11), and the second end of the rectangular connection area (2-21) is transitionally connected to the special-shaped hole position setting area (2-31); The second pin shaft mounting hole (15) matches the first pin shaft mounting hole (9); when the flip connection beam (2) is in a primary unfolded state, the third quick release pin mounting hole (16) and the first quick release pin mounting hole (14) are inserted with the same first quick release pin (41) to achieve fixation; when the flip connection beam (2) is in a primary folded state, the third quick release pin mounting hole (16) and the second quick release pin mounting hole (10) are inserted with the same first quick release pin (41).

5. A folding boarding device according to claim 4, characterized in that: The pedal connection assembly (6) is a rectangular parallelepiped structure, and comprises a fifth pin shaft mounting hole (33) and a fifth quick-release pin mounting hole (34). The fifth pin shaft mounting hole (33) is located at the first end of the pedal connection assembly (6), and the fifth pin shaft mounting hole (33) matches the third shaft mounting hole (17). The fifth quick-release pin mounting hole (34) is located below the fifth pin shaft mounting hole (33). When the flip connection beam (2) is in a secondary folding state, the fourth quick-release pin mounting hole (18) and the fifth quick-release pin mounting hole (34) are inserted with the same second quick-release pin (42).

6. A folding boarding device according to claim 5, characterized in that: The fifth pin shaft mounting hole (33) and the fifth quick-release pin mounting hole (34) both penetrate the first side surface and the second side surface opposite to the first side surface; a first groove (36) is provided on the third side surface of the rectangular parallelepiped structure, and first elongated holes (35) are provided on both side walls of the first groove (36); a second groove (37) is also provided on the third side surface of the rectangular parallelepiped structure, the second groove (37) is located below the first groove (36), second elongated holes (38) are provided on both side walls of the second groove (37), and a sixth quick-release pin mounting hole (39) is provided below the second elongated hole (38); a connecting ear is provided at the second end of the pedal connecting assembly (6), and a sixth pin shaft mounting hole (40) is provided on the connecting ear.

7. A foldable boarding device according to claim 6, characterized in that: The first end of the flip limit connecting rod (5) is provided with a seventh pin shaft mounting hole (31), and the second end of the flip limit connecting rod (5) is provided with an eighth pin shaft mounting hole (32). The first end of the flip limit connecting rod (5) is placed in the first groove (36) for sliding. The seventh pin shaft mounting hole (31) is matched with the first long hole (35) through the first pin shaft, and the eighth pin shaft mounting hole (32) is matched with the fourth pin shaft mounting hole (19) through the second pin shaft.

8. A foldable boarding device according to claim 7, characterized in that: The pedal assembly (4) comprises a pedal (23), the pedal (23) being a rectangular plate, and a frame structure consisting of a pedal transverse side beam (26), a pedal longitudinal side beam (27), a pedal longitudinal auxiliary beam (28) and a pedal transverse auxiliary beam (29) is arranged below the pedal (23), the pedal transverse side beam (26) being located on two short sides of the rectangular plate, the pedal longitudinal side beam (27) being located on two long sides of the rectangular plate, a plurality of pedal longitudinal auxiliary beams (28) being arranged in the rectangular plate, the pedal longitudinal auxiliary beams (28) being parallel to the pedal longitudinal side beams (27), and a plurality of pedal transverse auxiliary beams (29) being arranged between every two pedal longitudinal auxiliary beams (28) and between the pedal longitudinal auxiliary beams (28) and the pedal longitudinal side beams (27); A first rotating ear shaft seat (22) and a second rotating ear shaft seat (30) are provided at both ends of the frame structure; the first rotating ear shaft seat (22) and the second rotating ear shaft seat (30) penetrate the pedal (23); the first fixed ear piece (24) on the second rotating ear shaft seat (30) protrudes above the pedal (23); the second fixed ear piece on the first rotating ear shaft seat (22) protrudes above the pedal (23); and the sixth pin shaft mounting hole (40) cooperates with the first rotating ear shaft seat (22) through a pin shaft.

9. A folding boarding device according to claim 8, characterized in that: The pedal limit connecting rod (3) comprises a connecting rod (44), one side of the first end of the connecting rod (44) is connected to a first pin shaft mounting position (45), and the first pin shaft mounting position (45) and the first end of the connecting rod (44) have a smooth transition; one side of the second end of the connecting rod (44) is connected to a second pin shaft mounting position (46), and the installation directions of the first pin shaft mounting position (45) and the second pin shaft mounting position (46) are opposite; the first pin shaft mounting position (45) is provided with a ninth pin shaft mounting hole (20), and the second pin shaft mounting position (46) is provided with a tenth pin shaft mounting hole (21); The first pin shaft mounting position (45) is placed in the second groove (37) to slide, the ninth pin shaft mounting hole (20) is matched with the second elongated hole (38) through the third pin shaft, and the tenth pin shaft mounting hole (21) is matched with the ear hole of the first fixed ear piece (24) through the pin shaft.

10. A method for using a foldable boarding device according to claim 9, characterized in that: When the boarding device needs to be deployed: First, remove the first quick-release pin (41) in the third quick-release pin mounting hole (16) and the first quick-release pin mounting hole (14), and then insert the removed first quick-release pin (41) through the third quick-release pin mounting hole (16) and the second quick-release pin mounting hole (10); Then, the second quick-release pin (42) in the fourth quick-release pin mounting hole (18) and the fifth quick-release pin mounting hole (34) is pulled out, so that the second end of the flip limit connecting rod (5) slides in the first groove (36) until the second pin shaft slides to the upper part of the first long hole (35); the fifth quick-release pin (43) in the tenth pin shaft mounting hole (21) and the first fixing ear piece (24) is pulled out, so that the first pin shaft mounting position (45) is placed in the second groove (37) and slides until the third pin shaft slides to the lower part of the second long hole (38); Finally, insert the bolts through the mounting holes (12) to secure the fixing base (1) to the mounting surface. When the boarding device needs to be folded: First, remove the bolts that secure the fixed base (1) to the mounting surface; Then, the first quick-release pin (41) in the third quick-release pin mounting hole (16) and the second quick-release pin mounting hole (10) is pulled out, and the pulled out first quick-release pin (41) is inserted through the third quick-release pin mounting hole (16) and the first quick-release pin mounting hole (14); Finally, the flip connection beam (2) is rotated to make the second end of the flip limit connection rod (5) slide in the first groove (36) until the second pin shaft slides to the lower part of the first elongated hole (35), and the same second quick release pin (42) is inserted into the fourth quick release pin mounting hole (18) and the fifth quick release pin mounting hole (34); the pedal connection assembly (6) is rotated to make the first pin shaft mounting position (45) slide in the second groove (37) until the third pin shaft slides to the upper part of the second elongated hole (38), and the fifth quick release pin (43) is inserted into the tenth pin shaft mounting hole (21) and the first fixed ear piece (24).

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