A boarding ladder assembly and a boarding device

Abstract

The present invention discloses a boarding ladder assembly and a boarding device, the boarding ladder assembly includes: a first ladder frame, a ladder frame connector, a second ladder frame, a ladder frame base, a plurality of pedals, a first connecting rod, a second connecting rod, and a connecting rod connector; wherein, during the switching process of the boarding ladder assembly from a folded state to an inclined state, the second ladder frame is first kept horizontal with the ladder frame base, the first connecting rod uses the hinge axis of the third hinge position as a rotation axis, and the connecting rod connector uses the hinge axis of the fourth hinge position as a rotation axis, and rotates to a horizontal state toward a side away from the ladder frame base; the first connecting rod and the second connecting rod are kept in the same straight line, and the first ladder frame and the second ladder frame are then rotated as a whole to form a certain angle with the ladder frame base. Thus, the purpose of the device being foldable, occupying a small space, and having adjustable pedals for easy boarding is achieved.

Description

Technical Field

[0001] The invention relates to the field of hull accessories and boarding equipment, and in particular to a boarding ladder assembly and a boarding device. Background Art

[0002] Traditional boarding methods include using gangplanks, rope ladders and other equipment for boarding. These boarding methods are not suitable for the complex and changeable marine environment. Boarding is cumbersome and has certain risks. Therefore, a boarding device with a boarding ladder can be used to improve the convenience and safety of boarding. However, in the prior art, the boarding device with a boarding ladder is often complex in structure, occupies a large space, has poor compatibility, and has high requirements for the height difference between the dock and the water surface.

[0003] Therefore, whether it is possible to design a boarding device that takes up little space and is easy to board is the technical problem that this patent aims to solve. Summary of the invention

[0004] In view of the above defects in the prior art, the present invention provides a boarding ladder assembly and a boarding device, which achieve the purpose that the device is foldable, occupies a small space, and has adjustable pedals for easy boarding.

[0005] The technical solution provided by the present invention is as follows:

[0006] The ladder assembly of claim 1, wherein the ladder assembly comprises a plurality of steps, a ladder frame base, the ladder frame base being horizontally arranged; a first ladder frame, a ladder frame connecting piece and a second ladder frame being hingedly connected in sequence; a first connecting rod, a connecting rod connecting piece and a second connecting rod being hingedly connected in sequence; the first ladder frame is arranged in parallel with the first connecting rod, the second ladder frame is arranged in parallel with the second connecting rod, the first ladder frame and the first connecting rod are hingedly connected through the plurality of steps, the second ladder frame and the second connecting rod are hingedly connected through the plurality of steps, and the second ladder frame and the second connecting rod are respectively hingedly connected to the ladder frame base; the first connecting rod comprises a first connecting rod body and a first connecting portion, the first connecting portion is located at an end of the first connecting rod body close to the ladder frame base, and an end of the first connecting portion away from the first connecting rod body is provided with a third hinge position; the second connecting rod The rod includes a second connecting rod body and a second connecting part, the second connecting part is located at an end of the second connecting rod body away from the ladder frame base, and the end of the second connecting part away from the second connecting rod body is provided with a fourth hinge position; the first connecting rod and the second connecting rod are respectively hingedly connected to the connecting rod connecting member through the third hinge position and the fourth hinge position; wherein, during the switching process of the boarding ladder assembly from a folded state to an inclined state, the second ladder frame is first kept horizontal with the ladder frame base, the first connecting rod takes the hinge axis of the third hinge position as the rotation axis, and the connecting rod connecting member takes the hinge axis of the fourth hinge position as the rotation axis, and rotates to a horizontal state toward the side away from the ladder frame base; the first connecting rod and the second connecting rod are kept in the same straight line, and the first ladder frame and the second ladder frame are then rotated as a whole to form a certain angle with the ladder frame base.

[0007] The technical solution discloses a boarding ladder assembly, which solves the linkage problem between different components through a first ladder frame and a first connecting rod, a second ladder frame and a second connecting rod that can translate mutually, a plurality of pedals linked to the ladder frame or the connecting rod, and a ladder frame base hinged to the second ladder frame and the second connecting rod, respectively, so as to realize that the first ladder frame can rotate and fold relative to the second ladder frame and the ladder frame base. In addition, in the folded state, the first ladder frame overlaps with the second ladder frame, effectively reducing the overall occupied space, and being flexible and convenient.

[0008] Furthermore, the first ladder frame includes two first fixed rods parallel to each other, the second ladder frame includes two second fixed rods parallel to each other, and a plurality of the pedals are evenly installed between the two first fixed rods and between the two second fixed rods in sequence; the pedal includes a treading portion and a connecting portion, the treading portion has a treading surface, and the connecting portion is provided with a first hinge position and a second hinge position; a first rotating axis is provided at the first hinge position, so that the pedal is hinged to the first fixed rod or the second fixed rod, and a second rotating axis is provided at the second hinge position, so that the pedal is hinged to the first connecting rod or the second connecting rod, and the first rotating axis and the second rotating axis are hinged to each other. The rotating axes are parallel to each other; wherein, in the folded state, the first fixing rod is rotated to above the second fixing rod; in the horizontal state, the treading surfaces are parallel to the upper surface of the ladder frame base, and the first fixing rod and the second fixing rod are located in the same straight line and are parallel to the ladder frame base; in the inclined state, the second ladder frame forms an obtuse angle with the ladder frame base, the first connecting rod and the second connecting rod remain in a straight line, and are translated closer to each other relative to the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod drive each of the treading parts to rotate around the corresponding first rotation axis at the same angle, so that the treading surface remains horizontal.

[0009] The present technical solution further discloses the structure of the pedal and the connection relationship between the pedal and the first connecting rod and the second connecting rod, thereby solving the transmission problem between the pedal and the first ladder frame and the first connecting rod, or the second ladder frame or the second connecting rod during the state conversion of the boarding ladder assembly, thereby achieving the technical effect of automatic rotation of the pedal during the conversion from the folded state to the inclined state.

[0010] Further, there is a first distance between the third hinge position and the first connecting rod body, there is a second distance between the fourth hinge position and the second connecting rod body, and the first distance is equal to the second distance.

[0011] The present technical solution further discloses the specific structure of the first connecting rod and the second connecting rod. Through the equidistant design of the first distance and the second distance, the boarding ladder assembly is in a horizontal state or an inclined state. On the basis of the first connecting rod body and the second connecting rod body being maintained in the same straight line, the connecting rod connecting piece is ensured to be parallel to the straight line, so that the movements of the first connecting rod body and the second connecting rod body are consistent. At this time, the first connecting rod, the second connecting rod and the connecting rod connecting piece can be regarded as an integrated structure, thereby ensuring that all the pedals on the first ladder frame and the second ladder frame rotate synchronously.

[0012] Furthermore, the treading portion is in the form of an elongated strip, the connecting portion is installed at both ends of the treading portion, and the connecting portion extends in the direction of the treading portion away from the treading surface; the first hinge position is located in the middle position of the treading portion, and the second hinge position is located on the side of the first hinge position away from the treading portion and biased towards the side of the ladder frame base; and / or; the first hinge position and the second hinge position are respectively provided with through holes, and the axial direction of the through holes is consistent with the length direction of the treading portion.

[0013] The present technical solution further discloses the specific structure of the pedal. On the one hand, by installing connecting parts at both ends of the pedal part, the forces at both ends of the pedal are balanced during the rotation process, thereby reducing the loss of components and increasing stability. On the other hand, the main force point of the pedal is located in the middle of the pedal. The first hinge position is located here to increase the load-bearing capacity and safety of the pedal, while the second hinge position is biased to one side of the ladder frame base, which can provide better support for the pedal body in an inclined state.

[0014] Furthermore, it also includes a fence assembly, which is installed on both sides of the walkway of the boarding ladder assembly and is rotatably connected to the first ladder frame, the second ladder frame and the ladder frame base; the fence assembly includes a fence body, a connecting head, a connecting cap and a fixing sleeve; wherein, the connecting head is fixedly connected to the fence body, the connecting cap is provided with a groove consistent with the rotation direction of the fence assembly, the end of the connecting head away from the fence body can be rotatably installed in the groove, the connecting head and the connecting cap have an overlapping area, and the fixing sleeve can be slidably installed in the overlapping area; in the folded state, the fixing sleeve slides above the overlapping area, and the fence body is folded toward the walkway; in the horizontal state or the inclined state, the fixing sleeve slides to the outside of the overlapping area, the connecting head and the connecting cap are relatively fixed, and the fence body is perpendicular to the walkway.

[0015] The technical solution further discloses a fence assembly, which makes the process of switching the fence body between the folded state and the vertical state convenient and fast, and has good reliability, through a fixed sleeve that is slidably installed in the overlapping area.

[0016] Further, the first fixing rod and the second fixing rod are connected through the ladder frame connecting piece, and the end of the first fixing rod close to the ladder frame connecting piece has a first abutment surface, and the end of the second fixing rod close to the ladder frame connecting piece has a second abutment surface; a ladder frame limiting plate is installed on the ladder frame connecting piece, and the ladder frame limiting plate has a first limiting surface and a second limiting surface on both sides, the first limiting surface corresponds to the first abutment surface, and the second limiting surface corresponds to the second abutment surface; in the horizontal state or the inclined state, the first abutment surface abuts against the first limiting surface, the first limiting surface applies a supporting force to the first abutment surface, the second limiting surface abuts against the second abutment surface, and the second abutment surface applies a supporting force to the second limiting surface, so that the first fixing rod and the second fixing rod are kept in the same straight line.

[0017] The technical solution further discloses a ladder frame limit plate, which is installed at the connecting end of the first fixing rod and the second fixing rod to limit the rotation angle of the first ladder frame and the second ladder frame, so that the first fixing rod and the second fixing rod can be kept in a straight line.

[0018] Furthermore, the first fixing rod and the second fixing rod are hollow structures, and the first fixing rod and the second fixing rod are respectively provided with a first telescopic rod, one end of the first telescopic rod is hinged to the first fixing rod or the second fixing rod, and the other end is hinged to the ladder frame connecting piece, for driving the first ladder frame to transform from the folded state to the horizontal state.

[0019] The technical solution further discloses the specific structure of the first fixed rod and the second fixed rod and the power device. By installing the first telescopic rod or the second telescopic rod inside the first fixed rod and the second fixed rod, the overall appearance is very simple, and at the same time, the telescopic rod is prevented from directly contacting the user, thereby increasing safety.

[0020] Furthermore, the ladder frame base has a fifth hinge position hinged to the second fixed rod, and a sixth hinge position hinged to the second connecting rod, and the ladder frame base is provided with a seventh hinge position on the side of the sixth hinge position away from the fifth hinge position, and the seventh hinge position is at a certain distance from the sixth hinge position; the ladder frame base is connected to the second ladder frame through a second telescopic rod at the bottom, one end of the second telescopic rod is hinged to the seventh hinge position, and the other end is hinged to the bottom of the second ladder frame; and / or; the first telescopic rod or the second telescopic rod is a cylinder or a screw.

[0021] The technical solution further discloses a connection structure between the ladder frame base and the second fixing rod.

[0022] Furthermore, the first connecting portion is in an arc-shaped structure, and the second connecting portion is perpendicular to the second connecting rod body.

[0023] The technical solution further discloses the specific structure of the first connecting part and the second connecting part. The arc-shaped structure can avoid interference with the pedal during the rotation of the first connecting rod.

[0024] A boarding device comprises: a cabin having an opening on one side; a flipping mechanism comprising a flipping platform and a flipping driving device, wherein the flipping platform is hingedly connected to the bottom surface of the cabin; the flipping driving device is connected to the flipping platform and is used to drive the flipping platform to rotate toward the outside of the opening; a rotating mechanism comprising a rotating platform and a rotating driving device connecting the rotating platform and the flipping platform, and is used to drive the rotating platform to rotate so that the angle between the rotating platform and the flipping platform changes; and a boarding mechanism comprising any of the above-mentioned boarding ladder assemblies, wherein the ladder frame base is hingedly connected to the rotating platform.

[0025] The technical solution further discloses a boarding device, which is connected in sequence through a cabin, a flipping mechanism, a rotating mechanism and a boarding mechanism. The flipping drive device is used to flip other subsequent devices to the outside of the opening, and is used to flip the device to the inside of the opening after use, so as to avoid the entire device being outside the cabin, saving the space it occupies and affecting driving safety. In addition, through the rotating mechanism and the telescopic rod in the boarding mechanism, the device can meet the boarding needs in various directions and angles, improving the compatibility of the device.

[0026] The technical effects of the present invention are:

[0027] 1. Through the mutually translatable first fixed rod and first connecting rod, second fixed rod and second connecting rod, and a plurality of pedals linked with the fixed rod or connecting rod, and the ladder frame base respectively hinged with the second fixed rod and the second connecting rod, the first ladder frame and the second ladder frame rotate relative to the ladder frame base, that is, the pedal angle changes when in the tilted state, so that all the pedals rotate synchronously. In addition, in the folded state, the first ladder frame and the second ladder frame overlap, effectively reducing the overall occupied space, which is flexible and convenient;

[0028] 2. By designing the first distance and the second distance to be equidistant, the first connecting rod body and the second connecting rod body are kept in the same straight line when the boarding ladder assembly is in a horizontal state or an inclined state, and the connecting rod connecting piece is ensured to be parallel to the straight line, so that the movement of the first connecting rod body and the second connecting rod body is kept consistent. At this time, the first connecting rod, the second connecting rod and the connecting rod connecting piece can be regarded as an integrated structure, thereby ensuring that all pedals on the first ladder frame and the second ladder frame rotate synchronously;

[0029] 3. By installing connecting parts at both ends of the pedal part, the forces at both ends of the pedal are balanced during the rotation process, reducing the loss of components and increasing stability; on the other hand, the main force point of the pedal in the middle of the pedal, the first hinge position is located here to increase the load and safety of the pedal, and the second hinge position is biased to one side of the ladder frame base, which can better support the pedal body in an inclined state;

[0030] 4. The fixed sleeve slidably mounted in the overlapping area makes the process of switching between the folding and vertical states of the fence body convenient and quick, and has good reliability;

[0031] 5. Connect the cabin, flip mechanism, rotating mechanism and boarding mechanism in sequence. The flip drive device is used to flip other subsequent devices to the outside of the opening, and to flip the device to the inside of the opening after use, so as to avoid the entire device being outside the cabin, saving the space it occupies and affecting driving safety. In addition, through the rotating mechanism and the telescopic rod in the boarding mechanism, the device can meet the boarding needs in all directions and angles, improving the compatibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0033] Figure 1 It is a schematic diagram of the structure of a boarding ladder assembly in a folded state according to an embodiment of the present invention;

[0034] Figure 2 yes Figure 1 A top view of

[0035] Figure 3 yes Figure 1 Bottom view of

[0036] Figure 4 yes Figure 3 Cross-sectional view along AA direction;

[0037] Figure 5 yes Figure 4 A local enlarged view of area a;

[0038] Figure 6 yes Figure 3 Cross-sectional view along direction BB;

[0039] Figure 7 It is a schematic structural diagram of a boarding ladder assembly in a horizontal state according to an embodiment of the present invention;

[0040] Figure 8 yes Figure 7 A schematic diagram of the structure after removing the first fixing rod, the second fixing rod and the ladder frame limit plate;

[0041] Fig. 9 yes Figure 8 A magnified view of the local structure in area b;

[0042] Fig.10 yes Figure 8 Schematic diagram of the structure after removing the fixed rod connector;

[0043] Fig.11 yes Fig.10 A magnified view of the local structure in area c;

[0044] Fig.12 It is a structural schematic diagram of a boarding ladder assembly in an inclined state according to an embodiment of the present invention;

[0045] Fig.13 yes Fig.12 A top view of

[0046] Fig.14 yes Fig.13 Cross-sectional view along CC direction;

[0047] Fig.15 yes Fig.13 Cross-sectional view along DD direction;

[0048] Fig.16 yes Fig.15 A magnified view of the local structure in area d;

[0049] Fig.17 is a schematic structural diagram of a pedal according to an embodiment of the present invention;

[0050] Fig.18 It is a partial structural schematic diagram of a fence assembly according to an embodiment of the present invention;

[0051] Fig.19 yes Fig.18 A schematic diagram of the structure in which the fixed sleeve is slid out of the overlapping area;

[0052] Fig. 20 It is a partial structural exploded diagram of a fence assembly according to an embodiment of the present invention;

[0053] Fig.21 It is a schematic diagram of the structure of a boarding device in a folded state according to an embodiment of the present invention;

[0054] Fig. 22 It is a schematic structural diagram of a boarding device in a horizontal state according to an embodiment of the present invention;

[0055] Fig.23 It is a schematic structural diagram of a boarding device in an inclined state according to an embodiment of the present invention.

[0056] Description of Figure Numbers:

[0057] 100. Boarding ladder assembly; 100-a. Boarding mechanism; 100-b. Walkway;

[0058] 110. First ladder frame; 111. First fixing rod;

[0059] 120. Ladder frame connecting piece; 121. Ladder frame limiting plate; 122. First limiting surface; 123. Second limiting surface;

[0060] 130. Second ladder frame; 131. Second fixing rod;

[0061] 140. Ladder frame base; 141. Fifth hinge position; 142. Sixth hinge position; 143. Seventh hinge position;

[0062] 150. pedal; 151. treading part; 152. connecting part; 153. treading surface; 154. first hinge position; 155. second hinge position; 156. first rotation axis; 157. second rotation axis;

[0063] 160. First connecting rod; 161. First connecting rod body; 162. First connecting portion; 162-a. Third hinge position;

[0064] 170. Second connecting rod; 171. Second connecting rod body; 172. Second connecting portion; 172-a. Fourth hinge position;

[0065] 180. Connecting rod connector;

[0066] 190. Fence assembly; 191. Fence body; 192. Connector; 193. Connecting cap; 194. Fixing sleeve; 195. Groove; 196. Overlapping area;

[0067] 200. Cabin; 210. Opening;

[0068] 300. Turning mechanism; 310. Turning platform; 320. Turning drive device;

[0069] 400. Rotating mechanism; 410. Rotating platform. DETAILED DESCRIPTION

[0070] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0071] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0072] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0073] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0075] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0076] [Example 1]

[0077] like Figures 1 to 3 As shown, a boarding ladder assembly 100 includes: a first ladder frame 110, a ladder frame connector 120, a second ladder frame 130, a ladder frame base 140, a plurality of pedals 150, a first connecting rod 160 arranged parallel to the first ladder frame 110, a second connecting rod 170 arranged parallel to the second ladder frame 130, and a connecting rod connector 180 for connecting the first connecting rod 160 and the second connecting rod 170.

[0078] Specifically, Figure 1 As shown, the first ladder frame 110, the ladder frame connecting member 120, the second ladder frame 130 and the ladder frame base 140 are hinged in sequence. Figure 4 As shown, the first link 160, the link connector 180, the second link 170 and the ladder frame base 140 are hinged in sequence.

[0079] Furthermore, if Figure 5 , Fig.11 and Fig.16 As shown, the first connecting rod 160 includes a first connecting rod body 161 and a first connecting portion 162. The first connecting portion 162 is located at one end of the first connecting rod body 161 close to the ladder frame base 140, and a third hinge position 162-a is provided at one end of the first connecting portion 162 away from the first connecting rod body 161.

[0080] Furthermore, the second connecting rod 170 includes a second connecting rod body 171 and a second connecting portion 172 , the second connecting portion 172 is located at one end of the second connecting rod body 171 away from the ladder frame base 140 , and a fourth hinge position 172 - a is provided at one end of the second connecting portion 172 away from the second connecting rod body 171 .

[0081] Specifically, the first connecting rod 160 and the second connecting rod 170 are respectively hingedly connected to the connecting rod connector 180 through the third hinge position 162-a and the fourth hinge position 172-a; wherein,

[0082] During the switching process of the boarding ladder assembly from the folded state to the inclined state, the second ladder frame 130 is first kept horizontal with the ladder frame base 140. At the same time, the first connecting rod 160 rotates to a horizontal state toward the side away from the ladder frame base with the hinge axis of the third hinge position 162-a as the rotation axis, and the connecting rod connector 180 rotates to a horizontal state with the hinge axis of the fourth hinge position 172-a as the rotation axis. The first connecting rod 160 and the second connecting rod 170 are kept in the same straight line, and the first ladder frame 110 and the second ladder frame 130 are then rotated as a whole to form a certain angle with the ladder frame base, and converted to an inclined state.

[0083] [Example 2]

[0084] This embodiment is a boarding ladder assembly 100, and this embodiment is a preferred embodiment of the first embodiment, wherein similar features are not repeated here.

[0085] More preferably, if Fig.13 As shown, the first ladder frame 110 includes two mutually parallel first fixing rods 111 , the second ladder frame 130 includes two mutually parallel second fixing rods 131 , and a plurality of pedals 150 are evenly installed in sequence between the two first fixing rods 111 or between the two second fixing rods 131 .

[0086] Furthermore, if Fig.17 As shown, the pedal 150 includes a treading portion 151 and a connecting portion 152, the treading portion 151 has a treading surface 153, the connecting portion 152 is provided with a first hinge position 154 and a second hinge position 155, and a certain distance is provided between the first hinge position 154 and the second hinge position 155;

[0087] Furthermore, if Figure 5 As shown, the pedal 150 is hinged to the first fixed rod 111 or the second fixed rod 131 through a first hinge position 154, and has a first rotation axis 156. It is hinged to the first connecting rod 160 or the second connecting rod 170 through a second hinge position 155, and has a second rotation axis 157. The first rotation axis 156 and the second rotation axis 157 are parallel to each other.

[0088] Specifically, the boarding ladder assembly 100 includes but is not limited to the following states:

[0089] like Figures 1 to 6 As shown, in the folded state, the first fixing rod 111 is rotated to above the second fixing rod 131 and are parallel to each other;

[0090] like Figures 7 to 11 As shown, in a horizontal state, the tread surface 153 is parallel to the upper surface of the ladder frame base 140, the first fixing rod 111 and the second fixing rod 131 are located in the same straight line, and the first connecting rod 160 and the second connecting rod 170 are located in the same straight line and are parallel to the upper surface of the ladder frame base 140;

[0091] like Figures 12 to 16 As shown, in the inclined state, the second ladder frame 130 forms an obtuse angle with the ladder frame base 140, the first connecting rod 160 and the second connecting rod 170 remain in a straight line, and are relatively translated closer to the first connecting rod 160 and the second connecting rod 170, and the first connecting rod 160 and the second connecting rod 170 drive each treading part 151 to rotate around the corresponding first rotating axis 156 at the same angle, so that the treading surface 153 remains horizontal.

[0092] Among them, there is a first distance between the third hinge position 162-a and the first connecting rod body 161, and a second distance between the fourth hinge position 172-a and the second connecting rod body 171, and the first distance is equal to the second distance; the connecting rod connecting member 180 is hinged to the first connecting rod 160 through the third hinge position 162-a, and the connecting rod connecting member 180 is hinged to the second connecting rod 170 through the fourth hinge position 172-a.

[0093] At this point, it should be understood by those skilled in the art that the reason why the tread surface 153 of the pedal 150 can be kept horizontal with the ladder frame base 140 or rotate synchronously during the change from the horizontal state to the inclined state is that the first connecting rod 160, the second connecting rod 170 and the connecting rod connecting member 180 are an integral body relative to the first ladder frame 110 and the second ladder frame 130. In this solution, the first connecting portion 162, the connecting rod connecting member 180 and the second connecting portion 172 form three adjacent sides of a parallelogram, so that during the movement, the first connecting rod 160 and the second connecting rod 170 have the same movement direction and speed, thereby synchronously driving different pedals 150 to rotate.

[0094] That is, in a horizontal state or an inclined state, the connecting rod connector 180 is parallel to the first connecting rod body 161 or the second connecting rod body 170. In practical applications, in order to prevent the pedal 150 from interfering with the first connecting rod 160, the first connecting portion 162 is designed to be an arc-shaped structure. The second connecting portion 172 is arranged perpendicular to the second connecting rod body 171.

[0095] Further preferably, the tread portion 151 is in a long strip structure, and the connecting portion 152 is installed at both ends of the tread portion 151, and the connecting portion 152 extends toward the tread portion 151 away from the tread surface 153. The first hinge position 154 is located in the middle of the tread portion 151, and the second hinge position 155 is located on the side of the first hinge position 154 away from the tread portion 151 and biased toward the side of the ladder frame base 140. Further, the first hinge position 154 and the second hinge position 155 are respectively provided with through holes, and the axis direction of the through holes is consistent with the length direction of the tread portion 151.

[0096] In another preferred embodiment, Figures 18 to 23 As shown, the boarding ladder assembly 100 further includes a fence assembly 190 .

[0097] Specifically, the fence assembly 190 is installed on both sides of the walkway 100-b of the boarding ladder assembly 100, and is rotatably connected to the first ladder frame 110, the second ladder frame 130 and the ladder frame base 140. Fig. 20 As shown, the fence assembly 190 includes a fence body 191, a connecting head 192, a connecting cap 193 and a fixing sleeve 194.

[0098] The connector 192 is fixedly connected to the fence body 191, the connector cap 193 is provided with a groove 195 which is consistent with the rotation direction of the fence assembly 190, the end of the connector 192 away from the fence body 191 can be rotatably installed in the groove 195, the connector 192 and the connector cap 193 have an overlapping area 196, and the fixing sleeve 194 can be slidably installed in the overlapping area 196. It should be noted that the overlapping area 196 can be regarded as the area where the connector 192 is inserted into the groove 195, and the connector 192 and the fence body 191 are limited by blocking the overlapping area 196 with the fixing sleeve 194.

[0099] Specifically, in the folded state, as Fig.19 As shown, the fixing sleeve 194 slides above the overlapping area 196, at which time the fence body 191 can be folded toward the walkway 100-b; in a horizontal state or an inclined state, such as Fig.18 As shown, the fixing sleeve 194 slides to the outside of the overlapping area 196, the connecting head 192 and the connecting cap 193 are relatively fixed, and the fence body 191 is perpendicular to the walkway 100-b.

[0100] Further preferably, the first fixing rod 111 and the second fixing rod 131 are connected through the ladder frame connecting member 120, and the first fixing rod 111 has a first abutting surface at one end close to the ladder frame connecting member 120, and the second fixing rod 131 has a second abutting surface at one end close to the ladder frame connecting member 120. A ladder frame limiting plate 121 is installed on the ladder frame connecting member 120, and the ladder frame limiting plate 121 has a first limiting surface 122 and a second limiting surface 123 on both sides, the first limiting surface 122 corresponds to the first abutting surface, and the second limiting surface 123 corresponds to the second abutting surface.

[0101] Specifically, in a horizontal state or an inclined state, the first abutting surface is tangent to the first limiting surface 122, and the second limiting surface 123 is tangent to the second abutting surface. Due to the gravity of the first ladder frame 110, the first abutting surface presses against the first limiting surface 122, and the first limiting surface 122 applies a reverse supporting force to the first abutting surface, and similarly, the second limiting surface 123 applies a supporting force to the second abutting surface, so that the first ladder frame 110 and the second ladder frame 130 are kept in the same straight line.

[0102] Further preferably, the first fixed rod 111 and the second fixed rod 131 are hollow structures, and the first telescopic rod is respectively installed inside the first fixed rod 111 and the second fixed rod 131. One end of the first telescopic rod is hinged to the first fixed rod 111 or the second fixed rod 131, and the other end is hinged to the ladder frame connecting piece 120, which is used to drive the first ladder frame 110 to convert from a folded state to a horizontal state.

[0103] Specifically, the ladder frame base 140 has a fifth hinge position 141 hinged to the second fixed rod 131, a sixth hinge position 142 hinged to the second connecting rod 170, and a seventh hinge position 143 is provided on the side of the sixth hinge position 142 away from the fifth hinge position 141, and the seventh hinge position 143 is at a certain distance from the sixth hinge position 142; the lower part of the ladder frame base 140 is connected to the second ladder frame 130 through a second telescopic rod, one end of the second telescopic rod is hinged to the seventh hinge position 143, and the other end is hinged to the lower part of the second ladder frame 130. In practical applications, the first telescopic rod or the second telescopic rod is a cylinder or a lead screw.

[0104] [Example 3]

[0105] A boarding device, such as Figure 21 to Figure 23 As shown, it includes a cabin 200 with an opening 210 on one side, a flip mechanism 300, a rotation mechanism 400 and a boarding mechanism 100-a. Corresponding to the above embodiment, the boarding device includes at least three states, such as Fig.21 The folded state shown, Fig. 22 The horizontal state shown, and Fig.23 The tilted state shown is suitable for different working environments.

[0106] Specifically, the flip mechanism 300 includes a flip platform 310 and a flip driving device 320 . The flip platform 310 is hingedly connected to the bottom surface of the cabin 200 . The flip driving device 320 is connected to the flip platform 310 to drive the flip platform 310 to rotate toward the outside of the opening 210 .

[0107] Furthermore, the rotating mechanism 400 includes a rotating platform 410 and a rotating driving device connecting the rotating platform 410 and the flipping platform 310, and is used to drive the rotating platform 410 to rotate so that the angle between the rotating platform 410 and the flipping platform 310 changes.

[0108] Furthermore, the boarding mechanism 100-a includes any of the boarding ladder assemblies 100 in the above-mentioned embodiments, and the ladder frame base 140 is hingedly connected to the rotating platform 410, wherein the specific composition structure of the boarding ladder assembly 100 is not described in detail herein. In practical applications, the boarding device can be installed on a ship, an airplane or other transportation platform with a height difference.

[0109] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A boarding ladder assembly, characterized in that: include: Several pedals; A ladder frame base, wherein the ladder frame base is arranged horizontally; A first ladder frame, a ladder frame connecting member and a second ladder frame which are hingedly connected in sequence; A first connecting rod, a connecting rod connecting member and a second connecting rod which are hingedly connected in sequence; The first ladder frame is arranged in parallel with the first connecting rod, the second ladder frame is arranged in parallel with the second connecting rod, the first ladder frame and the first connecting rod are hingedly connected through a plurality of the pedals, the second ladder frame and the second connecting rod are hingedly connected through a plurality of the pedals, and the second ladder frame and the second connecting rod are hingedly connected to the ladder frame base respectively; The first connecting rod comprises a first connecting rod body and a first connecting portion, wherein the first connecting portion is located at one end of the first connecting rod body close to the ladder frame base, and a third hinge position is provided at one end of the first connecting portion away from the first connecting rod body; The second connecting rod comprises a second connecting rod body and a second connecting portion, the second connecting portion is located at one end of the second connecting rod body away from the ladder frame base, and a fourth hinge position is provided at one end of the second connecting portion away from the second connecting rod body; The first connecting rod and the second connecting rod are respectively hingedly connected to the connecting rod connecting member through the third hinge position and the fourth hinge position; wherein, During the switching process of the boarding ladder assembly from a folded state to a tilted state, the second ladder frame is first kept horizontal with the ladder frame base, the first connecting rod takes the hinge axis of the third hinge position as the rotation axis, and the connecting rod connecting member takes the hinge axis of the fourth hinge position as the rotation axis, and rotates to a horizontal state toward the side away from the ladder frame base; the first connecting rod and the second connecting rod are kept in the same straight line, and the first ladder frame and the second ladder frame are then rotated as a whole to form a certain angle with the ladder frame base.

2. A boarding ladder assembly according to claim 1, characterized in that: The first ladder frame includes two mutually parallel first fixing rods, the second ladder frame includes two mutually parallel second fixing rods, and a plurality of the pedals are evenly installed between the two first fixing rods and between the two second fixing rods in sequence; The pedal comprises a treading portion and a connecting portion, the treading portion has a treading surface, and the connecting portion is provided with a first hinge position and a second hinge position; A first rotation axis is provided at the first hinge position, so that the pedal is hinged to the first fixed rod or the second fixed rod, and a second rotation axis is provided at the second hinge position, so that the pedal is hinged to the first connecting rod or the second connecting rod, and the first rotation axis and the second rotation axis are parallel to each other; wherein, In the folded state, the first fixing rod is rotated to above the second fixing rod; In the horizontal state, the treading surfaces are parallel to the upper surface of the ladder frame base, and the first fixing rod and the second fixing rod are located in the same straight line and are parallel to the ladder frame base; In the inclined state, the second ladder frame forms an obtuse angle with the ladder frame base, the first connecting rod and the second connecting rod remain in a straight line, and are translated closer to each other relative to the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod drive each of the treading parts to rotate around the corresponding first rotation axis at the same angle, so that the treading surface remains horizontal.

3. A boarding ladder assembly according to claim 2, characterized in that: There is a first distance between the third hinged position and the first connecting rod body, there is a second distance between the fourth hinged position and the second connecting rod body, and the first distance is equal to the second distance.

4. A boarding ladder assembly according to claim 2, characterized in that: The treading portion is in a long strip structure, the connecting portion is installed at both ends of the treading portion, and the connecting portion extends in a direction away from the treading surface toward the treading portion; The first hinge position is located at the middle position of the treading portion, and the second hinge position is located at a side of the first hinge position away from the treading portion and biased towards a side of the ladder frame base; and / or; The first hinge position and the second hinge position are respectively provided with through holes, and the axis direction of the through holes is consistent with the length direction of the treading part.

5. The boarding ladder assembly according to claim 1, characterized in that: Also includes: A fence assembly, the fence assembly is installed on both sides of the walkway of the boarding ladder assembly, and is rotatably connected to the first ladder frame, the second ladder frame and the ladder frame base; The fence assembly includes a fence body, a connector, a connector cap and a fixing sleeve; The connecting head is fixedly connected to the fence body, the connecting cap is provided with a groove which is consistent with the rotation direction of the fence assembly, the end of the connecting head away from the fence body can be rotatably installed in the groove, the connecting head and the connecting cap have an overlapping area, and the fixing sleeve can be slidably installed in the overlapping area; In the folded state, the fixing sleeve slides above the overlapping area, and the fence body folds toward the walkway; In the horizontal state or the inclined state, the fixing sleeve slides to the outside of the overlapping area, the connecting head and the connecting cap are relatively fixed, and the fence body is perpendicular to the walkway.

6. A boarding ladder assembly according to claim 2, characterized in that: The first fixing rod and the second fixing rod are connected through the ladder frame connecting member, and the first fixing rod has a first abutting surface at one end close to the ladder frame connecting member, and the second fixing rod has a second abutting surface at one end close to the ladder frame connecting member; A ladder frame limiting plate is installed on the ladder frame connecting member, and the ladder frame limiting plate has a first limiting surface and a second limiting surface on both sides, the first limiting surface corresponds to the first abutting surface, and the second limiting surface corresponds to the second abutting surface; In the horizontal state or the inclined state, the first abutting surface abuts against the first limiting surface, and the first limiting surface applies a supporting force to the first abutting surface; the second limiting surface abuts against the second abutting surface, and the second abutting surface applies a supporting force to the second limiting surface, so that the first fixing rod and the second fixing rod are kept in the same straight line.

7. A boarding ladder assembly according to claim 6, characterized in that: The first fixing rod and the second fixing rod are hollow structures, and a first telescopic rod is respectively installed inside the first fixing rod and the second fixing rod. One end of the first telescopic rod is hinged to the first fixing rod or the second fixing rod, and the other end is hinged to the ladder frame connecting piece, which is used to drive the first ladder frame to transform from the folded state to the horizontal state.

8. A boarding ladder assembly according to claim 7, characterized in that: The ladder frame base has a fifth hinge position hinged to the second fixing rod, and a sixth hinge position hinged to the second connecting rod, and the ladder frame base is provided with a seventh hinge position on a side of the sixth hinge position away from the fifth hinge position, and the seventh hinge position is at a certain distance from the sixth hinge position; The lower part of the ladder frame base is connected to the second ladder frame via a second telescopic rod, one end of the second telescopic rod is hinged to the seventh hinge position, and the other end is hinged to the lower part of the second ladder frame; and / or; The first telescopic rod or the second telescopic rod is a cylinder or a lead screw.

9. The boarding ladder assembly according to claim 1, characterized in that: The first connecting portion is in an arc-shaped structure, and the second connecting portion is perpendicular to the second connecting rod body.

10. A boarding device, characterized in that: include: A cabin having an opening on one side; The flipping mechanism comprises a flipping platform and a flipping driving device, wherein the flipping platform is hingedly connected to the bottom surface of the cabin; the flipping driving device is connected to the flipping platform and is used to drive the flipping platform to rotate toward the outside of the opening; The rotating mechanism includes a rotating platform and a rotating driving device connecting the rotating platform and the flipping platform, and is used to drive the rotating platform to rotate so that the angle between the rotating platform and the flipping platform changes; A boarding mechanism, wherein the boarding mechanism comprises a boarding ladder assembly as described in any one of claims 1-9, wherein the ladder frame base is hingedly connected to the rotating platform.

Images