Folding boarding device

Abstract

The utility model belongs to the technical field of vehicle-mounted equipment, and relates to a folding boarding device. 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 utility model belongs to the technical field of vehicle-mounted equipment, and relates to a folding boarding device. BACKGROUND

[0002] The boarding device is a stair structure applied to a vehicle, mainly meeting the needs of personnel getting on and off the vehicle. The traditional boarding device is usually fixedly installed on the vehicle, such as a truck, a passenger car or a motor home, and the telescopic ladder cannot be telescopic folded, and is fixedly installed outside the vehicle or at the vehicle door.

[0003] The existing boarding ladder is more suitable for large vehicles, and is only used to meet the boarding function, and the exposed boarding ladder also has the characteristics of being easy to rust and easy to be damaged by collision, and also affects the width size of the vehicle, and the existing boarding device is mostly a boarding ladder type with multiple steps, only considering the getting on and off function of personnel, without considering the getting on and off function of single or double people carrying goods, and the storage performance is poor.

[0004] In view of this, the Chinese utility model patent with the application number 202223149925.1 and the publication date of April 25, 2023 discloses a boarding ladder with a storage and hiding function, which has the storage and hiding function and can be hidden in the base plate in the folded storage state, and the step is unfolded from the storage and hiding state to the ladder state during the unfolding process. However, for this boarding ladder with storage and hiding function, although the base plate is used for protection, there is still a risk of rusting, and the base plate may be deformed after collision, affecting the storage or unfolding of the step.

[0005] The Chinese utility model patent with the application number 202320715808.2 and the publication date of July 28, 2023 discloses a hidden boarding ladder, which comprises a fixed rail assembly and a ladder frame assembly. The ladder frame assembly is stored in the fixed rail assembly in the storage state, and the step assembly is extended through the fixed rail assembly and the step is lowered during the unfolding process. For this hidden boarding ladder, the boarding ladder is stored under the vehicle body, but is exposed, which has the risk of rusting, and the rail and the ladder frame may be deformed after collision, affecting the unfolding and retraction of the ladder frame. Neither of them considers the function of double people carrying goods getting on and off the vehicle, and only meets the function of single people getting on and off the vehicle. SUMMARY

[0006] The utility model aims at overcoming the shortcomings of the prior art and providing a folding boarding device.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides a folding boarding device, which comprises a folding assembly and a step assembly, and the folding assembly is located at both ends of the step assembly.

[0009] 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, one end of the turnover connecting beam is matched with the fixed base to realize one-stage folding and one-stage unfolding, the other end of the turnover connecting beam is matched with the first end of the pedal connecting assembly to realize two-stage folding and two-stage unfolding, and the pedal connecting assembly is matched with the pedal limiting connecting rod to realize three-stage folding and three-stage unfolding.

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

[0011] Further, a reinforcing rib is arranged between the base longitudinal beam and the base bottom plate.

[0012] Further, the turnover connecting beam comprises a connecting area, one end of the connecting area is provided with a first mounting hole arrangement area, the other end of the connecting area is provided with a second mounting hole arrangement area, and the longitudinal section of the first mounting hole arrangement area, the connecting area and the second mounting hole arrangement area is U-shaped.

[0013] The first mounting hole arrangement area comprises front and rear symmetrically arranged rectangular hole position arrangement areas, the upper ends of the two rectangular hole position arrangement areas are transitionally connected with a first cross beam, the upper parts in the two rectangular hole position arrangement areas are each provided with a second pin shaft mounting hole, and a third quick-release pin mounting hole is arranged below each second pin shaft mounting hole.

[0014] The second mounting hole arrangement area comprises front and rear symmetrically arranged special-shaped hole position arrangement areas, the upper ends of the two special-shaped hole position arrangement areas are transitionally connected with a second cross beam, and the special-shaped hole position arrangement area is provided with a third pin shaft mounting hole, a fourth quick-release pin mounting hole and a fourth pin shaft mounting hole, 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 arrangement area, and the fourth pin shaft mounting hole is located in the first quadrant with the fourth quick-release pin mounting hole as the origin.

[0015] The connecting area comprises front and rear symmetrically arranged rectangular connecting areas, the upper end of the rectangular connecting area is transitionally connected with a third cross beam, the first end of the third cross beam is transitionally connected with the first cross beam, and the second end of the third cross beam is transitionally connected with the second cross beam; the first end of the rectangular connecting area is transitionally connected with the rectangular hole position arrangement area, and the second end of the rectangular connecting area is transitionally connected with the special-shaped hole position arrangement area.

[0016] The second pin shaft mounting hole cooperates with the first pin shaft mounting hole; when the turnover connecting beam is in a first unfolded 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 turnover connecting beam is in a first folded 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 connecting assembly is a cuboid structure, the pedal connecting assembly comprises 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 connecting assembly, and the fifth pin shaft mounting hole cooperates with the third pin shaft mounting hole; the fifth quick release pin mounting hole is located below the fifth pin shaft mounting hole, and when the turnover connecting beam is in a second folded 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] Further, the fifth pin shaft mounting hole and the fifth quick release pin mounting hole both penetrate the first side and the second side opposite to the first side, a first groove is formed on the third side of the cuboid structure, and a first long slot is formed on the two side walls of the first groove; a second groove is also formed on the third side of the cuboid structure, the second groove is located below the first groove, a second long slot is formed on the two side walls of the second groove, a sixth quick release pin mounting hole is arranged below the second long slot, and a connecting lug is arranged at the second end of the pedal connecting assembly, and a sixth pin shaft mounting hole is arranged on the connecting lug.

[0019] Further, the first end of the turnover limiting connecting rod is provided with a seventh pin shaft mounting hole, the second end of the turnover limiting connecting rod is provided with an eighth pin shaft mounting hole, the first end of the turnover limiting connecting rod is arranged to slide in the first groove, the seventh pin shaft mounting hole cooperates with the first long slot through a first pin shaft, and the eighth pin shaft mounting hole cooperates with the fourth pin shaft mounting hole through a second pin shaft.

[0020] Further, the pedal assembly comprises a pedal, the pedal is a rectangular plate, a frame structure composed of a pedal transverse edge beam, a pedal longitudinal edge beam, a pedal longitudinal auxiliary beam and a pedal transverse auxiliary beam is arranged below the pedal, the pedal transverse edge beam is arranged on two short edges of the rectangular plate, the pedal longitudinal edge beam is arranged on two long edges 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 edge beam, and a plurality of pedal transverse auxiliary beams are arranged between every two pedal longitudinal auxiliary beams and between the pedal longitudinal auxiliary beam and the pedal longitudinal edge beam.

[0021] The frame structure is provided with a first rotating trunnion seat and a second rotating trunnion seat at both ends, the first rotating trunnion seat and the second rotating trunnion seat penetrate the pedal, a first fixed lug on the second rotating trunnion seat protrudes above the pedal, a second fixed lug on the first rotating trunnion seat protrudes above the pedal, and the sixth pin shaft mounting hole and the first rotating trunnion seat are matched with each other through a pin shaft.

[0022] Further, the pedal is a pattern plate provided with anti-skid protrusions.

[0023] Further, the pedal limiting connecting rod comprises a connecting rod, one side of a first end of the connecting rod is connected with a first pin shaft mounting position, and the first pin shaft mounting position and the first end of the connecting rod are smoothly connected; one side of a second end of the connecting rod is connected with a second pin shaft mounting position, the mounting directions of the first pin shaft mounting position and the second pin shaft mounting position are opposite; the first pin shaft mounting position is provided with a ninth pin shaft mounting hole, and the second pin shaft mounting position is provided with a tenth pin shaft mounting hole.

[0024] The first pin shaft mounting position slides in the second groove, the ninth pin shaft mounting hole and the second long slot are matched with each other through a third pin shaft, and the tenth pin shaft mounting hole and the lug hole of the first fixed lug are matched with each other through a pin shaft.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] 1. The utility model discloses a multi-stage folding mechanism structure design realizes the quick folding and unfolding of the boarding device, and when unfolding, the boarding device has strong bearing capacity, is convenient for one person or two people to step on and carry goods, is firm and durable, is convenient to use, the pedal is a pattern plate provided with anti-skid protrusions, and has the anti-skid function.

[0027] 2. Through the multi-stage folding mechanism, the fixed base of the utility model can be disassembled through a nut, can be folded and stored after disassembling, does not have the risk of rusting and deformation caused by collision, occupies little space when folding, and is convenient to store.

[0028] 3. The boarding device provided by the utility model is folded through the three-stage folding structure of the turnover connecting beam, the pedal connecting assembly and the pedal assembly, and the space occupied by the boarding device in the folded state is effectively compressed, which is beneficial to the use in a narrow space. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate the principles of the present application and, along with the description, serve to explain the application.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0031] Figure 1 It is a whole structure schematic diagram of the folding boarding device in the present application.

[0032] Figure 2 It is a structure schematic diagram of the fixed base in the present application.

[0033] Figure 3 It is a structure schematic diagram of the turnover connecting beam in the present application.

[0034] Figure 4 It is a structure schematic diagram of the pedal limiting connecting rod in the present application.

[0035] Figure 5 It is a front structure schematic diagram of the pedal assembly in the present application.

[0036] Figure 6 It is a back structure schematic diagram of the pedal assembly in the present application.

[0037] Figure 7 It is a structure schematic diagram of the turnover limiting connecting rod in the present application.

[0038] Figure 8 It is a structure schematic diagram of the pedal connecting assembly in the present application.

[0039] Figure 9 It is a folding state schematic diagram of the folding boarding device in the present application.

[0040] Figure 10 It is a first stage unfolding state schematic diagram of the folding boarding device in the present application.

[0041] Figure 11 It is a second stage unfolding state schematic diagram of the folding boarding device in the present application.

[0042] Figure 12 It is a third stage unfolding state schematic diagram of the folding boarding device in the present application.

[0043] Wherein: 1 is a fixed base; 2 is a turnover 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 cross beam; 2-31 is a special-shaped hole position setting area; 2-21 is a rectangular connecting area; 2-22 is a third cross beam; 2-32 is a second cross beam; 3 is a pedal limiting connecting rod; 4 is a pedal assembly; 5 is a turnover limiting 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 cross beam; 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 a fourth pin shaft mounting hole; 20 is a ninth pin shaft mounting hole; 21 is a tenth pin shaft mounting hole; 22 is a first rotating trunnion seat; 23 is a pedal; 24 is a first fixed lug; 25 is a decorative plate; 26 is a pedal cross edge beam; 27 is a pedal longitudinal edge beam; 28 is a pedal longitudinal auxiliary beam; 29 is a pedal transverse auxiliary beam; 30 is a second rotating trunnion seat; 31 is a seventh pin shaft mounting hole; 32 is an eighth pin shaft mounting hole; 33 is a fifth pin shaft mounting hole; 34 is a fifth quick-release pin mounting hole; 35 is a first long slot; 36 is a first groove; 37 is a second groove; 38 is a second long slot; 39 is a sixth quick-release pin mounting hole; 40 is a sixth pin shaft mounting hole; 41 is a first quick-release pin; 42 is a second quick-release pin; 43 is a fifth quick-release pin; 44 is a connecting rod; 45 is a first pin shaft mounting position; 46 is a second pin shaft mounting position. DETAILED DESCRIPTION

[0044] The exemplary embodiments will be described in detail herein, and the implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatuses consistent with some aspects of the present application as detailed in the appended claims. EMBODIMENT

[0045] A folding boarding device comprises a folding assembly and a pedal assembly 4, and the folding assembly is located at both ends of the pedal assembly 4;

[0046] The folding assembly comprises a fixed base 1, a turnover connecting beam 2, a pedal limiting connecting rod 3, a turnover limiting connecting rod 5 and a pedal connecting assembly 6, and one end of the turnover connecting beam 2 cooperates with the fixed base 1 to realize one-stage folding and one-stage unfolding; the other end of the turnover connecting beam 2 cooperates with the first end of the pedal connecting assembly 6 to realize two-stage folding and two-stage unfolding, and the pedal connecting assembly 6 cooperates with the pedal limiting connecting rod 3 to realize three-stage folding and three-stage unfolding.

[0047] As Figure 1As shown, the boarding device mainly consists of a fixed base 1, a turnover connecting beam 2, a pedal limiting connecting rod 3, a pedal assembly 4, a turnover limiting connecting rod 5 and a pedal connecting assembly 6.

[0048] Further, the fixed base 1 comprises a base longitudinal beam 13, the lower end of which is connected with a base bottom plate 7, and the upper end of which is connected with a 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, 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.

[0049] Further, a reinforcing rib 8 is arranged between the base longitudinal beam 13 and the base bottom plate 7.

[0050] As shown, Figure 2 The fixed base 1 consists of a base bottom plate 7, a reinforcing rib 8, a base cross beam 11, a base longitudinal beam 13 and the like. The fixed base 1 is provided with mounting holes 12, by which the boarding device can be fixed firmly on the mounting plane through bolts. The fixed base 1 is provided with a first pin shaft mounting hole 9 cooperating with the turnover connecting beam 2; the fixed base 1 is provided with a second quick-release pin mounting hole 10 in the unfolded state of the turnover connecting beam 2; and the fixed base 1 is provided with a first quick-release pin mounting hole 14 in the folded state of the turnover connecting beam 2. The reinforcing rib 8 plays a role in structural reinforcement while also serving as mechanical limiting for folding the turnover connecting beam 2 into place.

[0051] Further, the turnover connecting beam 2 comprises a connecting area 2-2, one end of which is provided with a first mounting hole setting area 2-1, and the other end of which is provided with a second mounting hole setting area 2-3, and the longitudinal section of the first mounting hole setting area 2-1, the connecting area 2-2 and the second mounting hole setting area 2-3 are all U-shaped;

[0052] The first mounting hole setting area 2-1 comprises front and back symmetrically arranged rectangular hole setting areas 2-11, the upper ends of the two rectangular hole setting areas 2-11 are transitionally connected with a first cross beam 2-12, and the upper parts of the two rectangular hole setting areas 2-11 are both provided with a second pin shaft mounting hole 15, and below each second pin shaft mounting hole 15 is arranged a third quick-release pin mounting hole 16;

[0053] The second mounting hole setting area 2-3 includes front and rear symmetrically arranged special-shaped hole setting areas 2-31, and the upper ends of the two special-shaped hole setting areas 2-31 are transitionally connected with a second cross beam 2-32. The special-shaped hole setting areas 2-31 are 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. Taking the fourth quick-release pin mounting hole 18 as the origin, the fourth pin shaft mounting hole 19 is located in the first quadrant.

[0054] The connecting area 2-2 includes front and rear symmetrically arranged rectangular connecting areas 2-21, and the upper ends of the rectangular connecting areas 2-21 are transitionally connected with a third cross beam 2-22. The first end of the third cross beam 2-22 is transitionally connected with the first cross beam 2-31, and the second end of the third cross beam 2-22 is transitionally connected with the second cross beam 2-32. The first end of the rectangular connecting area 2-21 is transitionally connected with the rectangular hole setting area 2-11, and the second end of the rectangular connecting area 2-21 is transitionally connected with the special-shaped hole setting area 2-31.

[0055] The second pin shaft mounting hole 15 cooperates with the first pin shaft mounting hole 9. When the turnover connecting beam 2 is in a first-level unfolded state, the third quick-release pin mounting hole 16 and the first quick-release pin mounting hole 14 are inserted into the same first quick-release pin 41 to achieve fixation. When the turnover connecting beam 2 is in a first-level folded state, the third quick-release pin mounting hole 16 and the second quick-release pin mounting hole 10 are inserted into the same first quick-release pin 41.

[0056] As shown in Figure 3 The turnover connecting beam 2 is provided with a second pin shaft mounting hole 15 cooperating with the fixed base 1. The turnover connecting beam 2 is provided with a third quick-release pin mounting hole 16 cooperating with the fixed base 1 when the turnover connecting beam 2 is in a folded or unfolded state. The turnover connecting beam 2 is provided with a third pin shaft mounting hole 17 cooperating with the pedal connecting assembly 6. The turnover connecting beam 2 is provided with a fourth quick-release pin mounting hole 18 for the pedal connecting assembly 6 in a folded state. The turnover connecting beam 2 is provided with a fourth pin shaft mounting hole 19 cooperating with the turnover limiting connecting rod 5.

[0057] Further, the pedal connecting assembly 6 is a cuboid structure. The pedal connecting 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 connecting assembly 6 and cooperates with the third pin shaft mounting hole 17. The fifth quick-release pin mounting hole 34 is located below the fifth pin shaft mounting hole 33. When the turnover connecting beam 2 is in a second-level folded state, the fourth quick-release pin mounting hole 18 and the fifth quick-release pin mounting hole 34 are inserted into the same second quick-release pin 42.

[0058] Furthermore, the fifth pin mounting hole 33 and the fifth quick-release pin mounting hole 34 both penetrate the first side and the second side opposite to the first side. A first groove 36 is provided on the third side of the cuboid structure, and a first elongated hole 35 is provided on both side walls of the first groove 36. A second groove 37 is also provided on the third side of the cuboid structure. The second groove 37 is located below the first groove 36. A second elongated hole 38 is 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. A connecting ear is provided at the second end of the pedal connecting assembly 6, and a sixth pin mounting hole 40 is provided on the connecting ear.

[0059] like Figure 8 As shown, the pedal connecting assembly 6 is provided with a fifth pin mounting hole 33 that mates with the flip connecting beam 2; the pedal connecting assembly 6 is provided with a fifth quick-release pin mounting hole 34 that mates 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 movement of the flip limiting connecting rod 5 pin; 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 movement of the pedal limiting connecting rod 3 pin; the pedal connecting assembly 6 is provided with a sixth quick-release pin mounting hole 39 that mates with the first fixed lug 24 when the pedal assembly 4 is in the folded state; and the pedal connecting assembly 6 is provided with a sixth pin mounting hole 40 that mates with the pedal assembly 4.

[0060] Furthermore, the first end of the flip-limiting connecting rod 5 is provided with a seventh pin mounting hole 31, and the second end of the flip-limiting connecting rod 5 is provided with an eighth pin mounting hole 32. The first end of the flip-limiting connecting rod 5 slides in the first groove 36. The seventh pin mounting hole 31 and the first elongated hole 35 are engaged by a first pin, and the eighth pin mounting hole 32 and the fourth pin mounting hole 19 are engaged by a second pin.

[0061] like Figure 7 As shown, the flip-limiting connecting rod 5 is provided with a seventh pin mounting hole 31 that mates with the pedal connecting assembly 6; the pedal limiting connecting rod 3 is provided with an eighth pin mounting hole 32 that mates with the flip-connecting beam 2.

[0062] Further, the pedal assembly 4 comprises a pedal 23 which is a rectangular plate, and a frame structure composed of a pedal transverse beam 26, a pedal longitudinal beam 27, a pedal longitudinal auxiliary beam 28 and a pedal transverse auxiliary beam 29 is arranged below the pedal 23, the pedal transverse beam 26 is arranged on two short sides of the rectangular plate, the pedal longitudinal beam 27 is arranged on 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 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 beam 28 and the pedal longitudinal beam 27.

[0063] Both ends of the frame structure are provided with a first rotating trunnion seat 22 and a second rotating trunnion seat 30, the first rotating trunnion seat 22 and the second rotating trunnion seat 30 penetrate the pedal 23, a first fixing tab 24 on the second rotating trunnion seat 30 protrudes above the pedal 23, a second fixing tab on the first rotating trunnion seat 22 protrudes above the pedal 23, and the sixth pin shaft mounting hole 40 cooperates with the first rotating trunnion seat 22 through a pin shaft.

[0064] Further, the pedal is a pattern plate provided with anti-skid protrusions, and has an anti-skid function.

[0065] As shown in Figure 5 and Figure 6 , the pedal assembly 4 mainly comprises a first rotating trunnion seat 22, a pedal 23, a first fixing tab 24, a decorative plate 25, a pedal transverse beam 26, a pedal longitudinal beam 27, a pedal longitudinal auxiliary beam 28, a pedal transverse auxiliary beam 29 and a second rotating trunnion seat 30. The pedal transverse beam 26, the pedal longitudinal beam 27, the pedal longitudinal auxiliary beam 28 and the pedal transverse auxiliary beam 29 are welded to form a frame structure, the first rotating trunnion seat 22 and the second rotating trunnion seat 30 are welded to the frame, the pedal 23 and the decorative plate 25 are riveted, and the first fixing tab 24 is connected to the decorative plate 25 through a bolt and a nut. The first rotating trunnion seat 22 cooperates with the pedal limiting connecting rod 3 to realize the rotation of the pedal limiting 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.

[0066] Further, the pedal limiting connecting rod 3 comprises a connecting rod 44, one side of a first end of the connecting rod 44 is connected with a first pin shaft mounting position 45, and the first pin shaft mounting position 45 and the first end of the connecting rod 44 are smoothly connected; one side of a second end of the connecting rod 44 is connected with a second pin shaft mounting position 46, the mounting direction of the first pin shaft mounting position 45 is opposite to that of the second pin shaft mounting position 46; 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.

[0067] The first pin shaft installation site 45 is placed in the second groove 37 to slide, the ninth pin shaft installation hole 20 is matched with the second long slot 38 through the third pin shaft, and the tenth pin shaft installation hole 21 is matched with the ear hole of the first fixed lug 24 through the pin shaft.

[0068] As shown in the figure, the pedal limiting connecting rod 3 is provided with the ninth pin shaft installation hole 20 matched with the pedal connecting assembly 6; the pedal limiting connecting rod 3 is provided with the tenth pin shaft installation hole 21 matched with the pedal assembly 4. Figure 4

[0069] Further, as shown in the figure, the use method of the folding boarding device is as follows: Figures 9-12

[0070] When the boarding device needs to be unfolded:

[0071] Firstly, the same first quick release pin 41 in the third quick release pin installation hole 16 and the first quick release pin installation hole 14 is pulled out, and then the pulled-out first quick release pin 41 is inserted into the third quick release pin installation hole 16 and the second quick release pin installation hole 10;

[0072] 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 turnover limiting connecting rod 5 slides in the first groove 36 until the second pin shaft slides to the upper part of the first long slot 35; the first pin shaft installation site 45 is placed in the second groove 37 to slide until the third pin shaft slides to the lower part of the second long slot 38;

[0073] Finally, the bolt is inserted into the installation hole 12 to fix the fixed base 1 to the installation plane.

[0074] When the boarding device needs to be folded:

[0075] Firstly, the bolt fixing the fixed base 1 to the installation plane is removed;

[0076] Then, the same first quick release pin 41 in the third quick release pin installation hole 16 and the second quick release pin installation hole 10 is pulled out, and then the pulled-out first quick release pin 41 is inserted into the third quick release pin installation hole 16 and the first quick release pin installation hole 14;

[0077] Finally, the turnover connecting beam 2 is rotated, the second end of the turnover limiting connecting rod 5 slides in the first groove 36 until the second pin shaft slides to the lower part of the first long slot 35, the same second quick release pin 42 is inserted into the fourth quick release pin installation hole 18 and the fifth quick release pin installation hole 34, and the pedal connecting assembly 6 is rotated, so that the first pin shaft installation site 45 is placed in the second groove 37 to slide until the third pin shaft slides to the upper part of the second long slot 38.

[0078] Specifically: ​​

[0079] The process of unfolding this utility model from a folded state to an unfolded state is as follows:

[0080] a) such as Figure 9 As shown, remove the first quick-release pin 41 between the fixed base 1 and the flip-connecting beam 2;

[0081] b) such as Figure 10 As shown, after the flip-up connecting beam 2 is rotated to the unfolded state, the first quick-release pin 41 between the fixed base 1 and the flip-up connecting beam 2 is inserted; the second quick-release pin 42 between the flip-up connecting beam 2 and the pedal connecting assembly 6 is removed.

[0082] c) such as Figure 11 As shown, when the pedal connecting assembly 6 rotates, the pin slides into place in the first elongated hole 35, and the flip-limit connecting rod 5 rotates with the pin in the elongated hole 36 to the unfolded state.

[0083] d) such as Figure 12 As shown, when the fifth quick-release pin 43 between the pedal assembly 4 and the pedal connecting assembly 6 is removed, the pedal assembly 4 rotates, the pin 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, and the pedal assembly 4 rotates to the unfolded state. This utility model unfolds from the folded state to the unfolded state.

[0084] The process of folding this utility model from an unfolded state to a folded state is as follows:

[0085] a) such as Figure 12 As shown, when the pedal assembly 4 is manually rotated, the pin slides into place in the second elongated hole 38, and the pedal limiting connecting rod 3 rotates into place in the second groove 37 along with the pin, inserting the fifth quick-release pin 43 between the pedal assembly 4 and the pedal connecting assembly 6.

[0086] b) such as Figure 11 As shown, the pedal connecting assembly 6 is manually rotated, and the pin slides into place in the first elongated hole 35. The flip-limit connecting rod 5 rotates with the pin in the first groove 36 to the folded state and is inserted into the second quick-release pin 42 between the flip-connecting beam 2 and the pedal connecting assembly 6.

[0087] c) such as Figure 10 As shown, remove 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, and insert the first quick-release pin 41 between the fixed base 1 and the flip connecting beam 2. The present invention is folded from the unfolded state to the folded state.

[0088] The process of using this utility model for two people to move goods in and out of a train carriage is as follows:

[0089] a) Unfold the present invention from a folded state to an unfolded state;

[0090] b) two people step on the pattern plate 23 on both sides;

[0091] c) the person carries the goods from the ground to the carriage or from the carriage to the ground.

[0092] The foregoing is merely illustrative of the present application and as such should not be taken to limit the scope of the application. Various modifications made to the embodiments described herein of the general principles defined herein can be made in other embodiments without departing from the spirit or scope of the application.

[0093] It should be understood that the present application is not limited to the embodiments described above, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the claims appended hereto.

Claims

1. A folding boarding device, characterized in that, It includes a folding assembly and a pedal assembly (4), the folding assembly being located at both ends of the pedal assembly (4); The folding assembly includes a fixed base (1), a flip connecting beam (2), a pedal limiting connecting rod (3), a flip limiting connecting rod (5), and a pedal connecting assembly (6). One-stage folding or one-stage unfolding is achieved by one end of the flip connecting beam (2) cooperating with the fixed base (1); two-stage folding or two-stage unfolding is achieved by one end of the flip connecting beam (2) cooperating with the first end of the pedal connecting assembly (6); and three-stage folding or three-stage unfolding is achieved by the cooperation of the pedal connecting assembly (6) and the pedal limiting connecting rod (3).

2. The folding boarding device according to claim 1, characterized in that, The fixed base (1) includes a base longitudinal beam (13), the lower end of which is connected to a base base plate (7), and the upper end of which is connected to a base cross beam (11); the base base 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 mounting hole (9) and a second quick-release pin mounting hole (10), the first quick-release pin mounting hole (14) and the first pin mounting hole (9) are aligned left and right.

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-connecting beam (2) includes a connecting area (2-2), one end of which is provided with a first mounting hole setting area (2-1), and the other end of which is provided with a second mounting hole setting area (2-3). The longitudinal sections of the first mounting hole setting area (2-1), the connecting area (2-2), and the second mounting hole setting area (2-3) are all U-shaped. The first mounting hole setting area (2-1) includes rectangular hole setting areas (2-11) arranged symmetrically front and back. The upper ends of the two rectangular hole setting areas (2-11) are connected to a first crossbeam (2-12). The upper part of each of the two rectangular hole setting areas (2-11) is provided with a second pin mounting hole (15). A third quick-release pin mounting hole (16) is provided below each second pin mounting hole (15). The second mounting hole setting area (2-3) includes irregular hole setting areas (2-31) arranged symmetrically front and rear. The upper ends of the two irregular hole setting areas (2-31) are connected by a second crossbeam (2-32). The irregular hole setting area (2-31) is provided with a third pin mounting hole (17), a fourth quick-release pin mounting hole (18), and a fourth pin mounting hole (19). The third pin 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). Taking the fourth quick-release pin mounting hole (18) as the origin, the fourth pin mounting hole (19) is located in the first quadrant. The connecting area (2-2) includes a rectangular connecting area (2-21) arranged symmetrically front and back. The upper end of the rectangular connecting 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 connecting area (2-21) is transitionally connected to the rectangular hole setting area (2-11), and the second end of the rectangular connecting area (2-21) is transitionally connected to the irregular hole setting area (2-31). The second pin mounting hole (15) is engaged with the first pin mounting hole (9); when the flip connecting beam (2) is in the first-level unfolded state, the same first quick-release pin (41) is inserted into the third quick-release pin mounting hole (16) and the first quick-release pin mounting hole (14) to achieve fixation; when the flip connecting beam (2) is in the first-level folded state, the same first quick-release pin (41) is inserted into the third quick-release pin mounting hole (16) and the second quick-release pin mounting hole (10).

5. A folding boarding device according to claim 4, characterized in that, The pedal connecting assembly (6) is a cuboid structure. The pedal connecting assembly (6) includes a fifth pin mounting hole (33) and a fifth quick-release pin mounting hole (34). The fifth pin mounting hole (33) is located at the first end of the pedal connecting assembly (6). The fifth pin mounting hole (33) cooperates with the third pin mounting hole (17). The fifth quick-release pin mounting hole (34) is located below the fifth pin mounting hole (33). When the flip connecting beam (2) is in the second-level folding state, 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).

6. A folding boarding device according to claim 5, characterized in that, The fifth pin mounting hole (33) and the fifth quick-release pin mounting hole (34) both penetrate the first side and the second side opposite to the first side. A first groove (36) is provided on the third side of the cuboid structure. A first elongated hole (35) is provided on both sides of the first groove (36). A second groove (37) is also provided on the third side of the cuboid structure. The second groove (37) is located below the first groove (36). A second elongated hole (38) is provided on both sides of the second groove (37). 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). A sixth pin mounting hole (40) is provided on the connecting ear.

7. A folding boarding device according to claim 6, characterized in that, The first end of the flip-limiting connecting rod (5) is provided with a seventh pin mounting hole (31), and the second end of the flip-limiting connecting rod (5) is provided with an eighth pin mounting hole (32). The first end of the flip-limiting connecting rod (5) slides in the first groove (36). The seventh pin mounting hole (31) and the first elongated hole (35) are engaged by the first pin. The eighth pin mounting hole (32) and the fourth pin mounting hole (19) are engaged by the second pin.

8. A folding boarding device according to claim 7, characterized in that, The pedal assembly (4) includes a pedal (23), which is a rectangular plate. A frame structure consisting of a pedal horizontal beam (26), a pedal longitudinal beam (27), a pedal longitudinal auxiliary beam (28), and a pedal horizontal auxiliary beam (29) is provided below the pedal (23). The pedal horizontal beam (26) is located on the two short sides of the rectangular plate, and the pedal longitudinal beam (27) is located on the two long sides of the rectangular plate. Multiple pedal longitudinal auxiliary beams (28) are provided inside the rectangular plate. The pedal longitudinal auxiliary beams (28) are parallel to the pedal longitudinal beams (27). Several pedal horizontal auxiliary beams (29) are provided between every two pedal longitudinal auxiliary beams (28) and between the pedal longitudinal auxiliary beams (28) and the pedal longitudinal beams (27). Both ends of the frame structure are provided with a first rotating trunnion seat (22) and a second rotating trunnion seat (30). The first rotating trunnion seat (22) and the second rotating trunnion seat (30) pass through the pedal (23). The first fixed ear (24) on the second rotating trunnion seat (30) protrudes from the pedal (23), and the second fixed ear on the first rotating trunnion seat (22) protrudes from the pedal (23). The sixth pin mounting hole (40) and the first rotating trunnion seat (22) cooperate with each other through a pin.

9. A folding boarding device according to claim 8, characterized in that, The pedal (23) is a patterned plate with anti-slip protrusions.

10. A folding boarding device according to claim 8, characterized in that, The pedal limiting connecting rod (3) includes a connecting rod (44). A first pin mounting position (45) is connected to one side of the first end of the connecting rod (44), and the first pin mounting position (45) and the first end of the connecting rod (44) are smoothly connected. A second pin mounting position (46) is connected to one side of the second end of the connecting rod (44), and the first pin mounting position (45) and the second pin mounting position (46) are installed in opposite directions. A ninth pin mounting hole (20) is provided on the first pin mounting position (45), and a tenth pin mounting hole (21) is provided on the second pin mounting position (46). The first pin mounting position (45) slides in the second groove (37), the ninth pin mounting hole (20) and the second elongated hole (38) are engaged by the third pin, and the tenth pin mounting hole (21) and the ear hole of the first fixed ear piece (24) are engaged by the pin.

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