Movable walking board handrail

Abstract

The utility model relates to the field of folding handrails, in particular to a movable walking board handrail. The movable walking board handrail comprises a handrail main body and a movable walking board, wherein the handrail main body comprises a stand column suitable for being hinged and matched with a vehicle body; the connecting rod driving structure comprises a first connecting rod in hinge fit with the stand column, a second connecting rod suitable for being pivoted to the vehicle body and in hinge fit with the first connecting rod, and a driving piece connected with the second connecting rod; the driving piece and the first connecting rod are located at two ends of the pivot point of the second connecting rod. The movable walking board handrail is provided with the connecting rod driving structure, the stand column state and the folding state of the handrail body are switched, and the movable walking board handrail is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of folding railings, in particular to a movable walkway railing. Background Art

[0002] Some tank trucks have rooftop operation requirements. In order to protect the personal safety of workers, walkway railings are generally installed around the roof walkway.

[0003] Chinese utility model patent publication number CN215793737U discloses a folding railing for railway tank cars. The folding railing includes a railing body, a first column, a second column, and a mounting base. The railing body, the first column, and the second column form a parallelogram structure. The first column and the mounting base are hinged and secured by a latch. However, when using this folding railing, one must first climb onto the roof platform, erect the folded first and second columns, and then secure the first column and the mounting base with a latch to keep the folding railing upright. The process of folding and erecting the railing is cumbersome, and there are safety risks for workers during the folding and erecting process.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0005] To improve or resolve the technical problem of the cumbersome folding and erecting processes of foldable railings in the prior art, the present invention provides a movable walkway railing. The movable walkway railing comprises: a railing body including a column adapted to form an articulated connection with a vehicle body; a connecting rod drive structure including a first connecting rod articulated with the column; a second connecting rod adapted to be pivotally connected to the vehicle body and articulated with the first connecting rod; and a driving member connected to the second connecting rod; the driving member and the first connecting rod are located at opposite ends of the pivot point of the second connecting rod.

[0006] The utility model discloses a movable walkway railing comprising a railing body and a connecting rod driving structure. The railing body is hingedly connected to the vehicle body, which can protect the personal safety of the staff when erected, and can lower the height of the railing when folded to prevent damage to the railing. The connecting rod driving structure is connected to the railing body, and is used to drive the railing body to switch between the erected and folded states. The connecting rod driving structure comprises a first connecting rod, a second connecting rod and a driving member, wherein the second connecting rod is pivotally connected to the vehicle body; the driving member drives the second connecting rod to rotate with the pivot point as the center, and the first connecting rod moves accordingly, driving the column to rotate, thereby switching the railing body between the erected and folded states. Through the above-mentioned arrangement, the utility model discloses a movable walkway railing provided with a connecting rod driving structure to switch the column and folded states of the railing body, which has a simple structure and is easy to use.

[0007] Furthermore, the connecting rod driving structure also includes a third connecting rod whose two ends are respectively hingedly connected with the second connecting rod and the driving member; the driving member is suitable for forming an hinged connection with the vehicle body.

[0008] Furthermore, it also includes a ladder suitable for forming a fixed connection with the vehicle body, and the driving member is hingedly connected to the ladder.

[0009] Furthermore, the driving member is a tilting ladder, and a limiting member is arranged on the ladder to form a detachable connection with the driving member.

[0010] Furthermore, the limiting member and the driving member are detachably fixedly connected via a latch.

[0011] Furthermore, a connecting plate is arranged on the column, and the first connecting rod is hingedly connected to the connecting plate.

[0012] Furthermore, it also includes a pivot plate, which is suitable for forming a fixed connection with the vehicle body, and the second connecting rod is pivotally matched with the pivot plate.

[0013] Furthermore, the column is connected to a damper; one end of the damper is connected to the column, and the other end is suitable for being connected to the vehicle body.

[0014] Furthermore, a mounting seat is provided between the column and the vehicle body, the mounting seat is adapted to be fixedly connected to the vehicle body, and the column and the mounting seat are in an articulated connection.

[0015] Furthermore, the railing body also includes a cross bar that is hingedly engaged with the column.

[0016] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The main body of the handrail is connected to the vehicle body in an articulated manner, which can protect the personal safety of the staff when erected, and can reduce the height of the handrail when folded to prevent damage to the handrail; the connecting rod driving structure is connected to the main body of the handrail, and is used to drive the main body of the handrail to switch between the erected and folded states; the connecting rod driving structure includes a first connecting rod, a second connecting rod and a driving member, and the second connecting rod is pivotally connected to the vehicle body; the driving member drives the second connecting rod to rotate with the pivot point as the center, and the first connecting rod moves accordingly, driving the column to rotate, thereby switching the main body of the handrail between the erected and folded states, with a simple structure and easy use;

[0018] (2) By setting dampers and limiters, the connection stability between the railing body and the vehicle body is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0020] Figure 1 This is a schematic diagram of an embodiment of a movable walkway railing of the utility model;

[0021] Figure 2 This is another schematic diagram of an embodiment of a movable walkway railing of the utility model;

[0022] Figure 3 The utility model is a schematic diagram of a movable walkway railing in a folded state.

[0023] List of reference numerals: 1. Railing body; 11. Upright column; 12. Cross bar; 13. Mounting seat; 2. Connecting rod drive structure; 21. First connecting rod; 22. Second connecting rod; 23. Third connecting rod; 24. Driving member; 25. Connecting plate; 26. Pivot plate; 3. Ladder; 31. Limiting member; 32. Limiting ear; 33. Limiting hole; 100. Vehicle body; 101. Tank body; 102. Bracket; 103. Roof walkway. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0025] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "set," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] The vehicle body 100 includes a tank body 101 , a bracket 102 installed at the rear of the tank body 101 , and a roof platform 103 installed on the top of the tank body 101 .

[0028] To improve or resolve the technical problem of the cumbersome folding and erecting processes of foldable railings in the prior art, the present invention provides a movable walkway railing. The movable walkway railing comprises: a railing body 1, comprising a column 11 adapted to form an articulated connection with a vehicle body 100; a connecting rod drive structure 2, comprising a first connecting rod 21 articulated with the column 11; a second connecting rod 22 adapted to be pivotally connected to the vehicle body 100 and articulated with the first connecting rod 21; and a driving member 24 connected to the second connecting rod 22; the driving member 24 and the first connecting rod 21 are located at opposite ends of the pivot point of the second connecting rod 22.

[0029] Figure 1 This is a schematic diagram of an embodiment of a movable platform railing of the utility model. Figure 1 As shown, in one or more embodiments, a movable walkway railing of the present invention includes a ladder 3, a railing body 1 and a connecting rod driving structure 2.

[0030] Figure 2 This is another schematic diagram of an embodiment of a movable platform railing of the utility model. Figure 1 and Figure 2 As shown, in one or more embodiments, the railing body 1 includes upright posts 11 that are hingedly connected to the vehicle body 100, and crossbars 12 that are hingedly connected to the upright posts 11. Specifically, a mounting base 13 is provided on the roof walkway 103, located on the side of the roof walkway 103 facing away from the tank body 101. One end of the upright post 11 is hingedly connected to the mounting base 13, and the other end is hingedly connected to the crossbar 12. Multiple upright posts 11 are spaced apart along the length of the tank body 101. For example, seven upright posts 11 are provided, evenly and spaced apart. Alternatively, six, eight, or another suitable number of upright posts 11 may be provided. The crossbar 12 extends along the length of the tank body 101 and is connected to each upright post 11. Furthermore, a damper is connected to each upright post 11. One end of the damper is connected to the upright post 11, and the other end is connected to the tank body 101. Specifically, a protruding bracket is provided on the tank body 101, and one end of the damper is mounted on the tank body 101 via the protruding bracket. Furthermore, the damper is connected to the middlemost column 11, that is, the damper is connected to the fourth column 11. Alternatively, the damper can also be connected to other suitable columns 11.

[0031] Figure 3 This is a schematic diagram of the folded state of a movable walkway railing of the utility model. Figure 1 、 Figure 2 and Figure 3As shown, the ladder 3 is mounted on the vehicle body 100, with one end of the ladder 3 fixed to the roof walkway 103 and the other end fixed to the bracket 102. Furthermore, a limiter 31 is provided on the ladder 3. The limiter 31 includes a limiter ear 32 mounted on the ladder 3 and a limiter hole 33 provided in the connecting rod drive structure 2. By inserting and removing a pin or bolt through the limiter hole 33 and the limiter ear 32, the limiter ear 32 and the connecting rod drive structure 2 form a removable fixed connection. Furthermore, two limiters 32 can be provided: one for the folded state of the railing body 1 and one for the erected state of the railing body 1. Alternatively, a single limiter ear 32 can be provided, corresponding only to the erected state of the railing body 1 to ensure stability in the erected state. Alternatively, a single limiter ear 32 can be provided, corresponding only to the folded state of the railing body 1, with a damper ensuring stability in the erected state.

[0032] Continue to see Figure 1 、 Figure 2 and Figure 3 In one or more embodiments, the connecting rod drive structure 2 includes a first connecting rod 21, a second connecting rod 22, and a driving member 24. The two ends of the first connecting rod 21 are respectively connected to the column 11 and the second connecting rod 22 in a hinged manner. The second connecting rod 22 is pivotally connected to the vehicle body 100, and the two ends of the second connecting rod 22 are respectively connected to the first connecting rod 21 and the driving member 24. Specifically, a connecting plate 25 is arranged on the column 11, and the connecting plate 25 is arranged on the column 11 near the rear of the tank body 101. The first connecting rod 21 and the connecting plate 25 are connected in a hinged manner. Alternatively, the connecting plate 25 can also be arranged on other columns 11, and the first connecting rod 21 is connected in a hinged manner to the other columns 11. Furthermore, a pivot plate 26 is provided on the roof walkway 103, and the pivot plate 26 is fixedly connected to the roof walkway 103, and the second connecting rod 22 is pivotally connected to the pivot plate 26. Specifically, a pivot axis is provided on the pivot plate 26, and a pivot hole is provided in the middle of the second connecting rod 22 to match the pivot axis. The second connecting rod 22 rotates with the pivot axis as the pivot point. The second connecting rod 22 is driven by the driving member 24 to rotate, thereby driving the first connecting rod 21, and in turn driving the upright 11 to stand up or fold. Alternatively, the pivot plate 26 can be mounted on the tank body 101. For example, the driving member 24 is fixedly connected to the second connecting rod 22, so that when the driving member 24 rotates, it can also drive the second connecting rod 22 to rotate.

[0033] Continue to see Figure 1 、 Figure 2 and Figure 3In one or more embodiments, a third connecting rod 23 is provided between the second connecting rod 22 and the driving member 24, and the two ends of the third connecting rod 23 are respectively hingedly connected with the second connecting rod 22 and the driving member 24. The driving member 24 drives the third connecting rod 23 to move, and the third connecting rod 23 drives the second connecting rod 22 to rotate, thereby driving the first connecting rod 21 and the column 11 to move. Specifically, the driving member 24 is a flip ladder and is hingedly connected with the ladder 3. That is, the driving member 24 has the same structure as the ladder 3, and one end of the driving member 24 is hingedly mounted on the ladder 3. Furthermore, the hinge position of the driving member 24 is close to the end of the ladder 3, so that the driving member 24 can replace part of the ladder 3, extend the length of the ladder 3, and save the material of the ladder 3. Alternatively, the driving member 24 can be driven by a mechanical structure, such as a cylinder.

[0034] The working principle of the utility model is as follows: remove the pin or bolt on the limit member 31, rotate the driving member 24 with the hinge of the driving member 24 and the ladder 3 as the axis, and the third connecting rod 23 moves with the action of the driving member 24, driving the right end of the second connecting rod 22 to move up, and the left end of the second connecting rod 22 to move down, driving the first connecting rod 21 to move, and then the first pull rod pulls the column 11 to the left, and the column 11 rotates to the left with the mounting seat 13 as the axis until the column 11 rotates to the horizontal state, the driving member 24 just contacts the ladder 3, and the railing body 1 switches from the upright state to the folded state, and the pin or bolt on the limit member 31 is inserted to lock the folded state; on the contrary, rotate the driving member 24 in the opposite direction, the railing body 1 switches from the folded state to the upright device, and inserts the pin or bolt on the limit member 31 to prevent the railing body 1 from folding.

[0035] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is clearly not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A movable walkway railing, characterized in that: include: A railing body (1) includes a column (11) adapted to form an articulated connection with a vehicle body (100); A connecting rod driving structure (2) comprises a first connecting rod (21) which is hingedly matched with the column (11), a second connecting rod (22) which is adapted to be pivotally connected to the vehicle body (100) and is hingedly matched with the first connecting rod (21), and a driving member (24) connected to the second connecting rod (22); the driving member (24) and the first connecting rod (21) are located at both ends of the pivot point of the second connecting rod (22).

2. The movable walkway railing according to claim 1, characterized in that: The connecting rod driving structure (2) further comprises a third connecting rod (23) whose two ends respectively form an articulated connection with the second connecting rod (22) and the driving member (24); the driving member (24) is suitable for forming an articulated connection with the vehicle body (100).

3. The movable walkway railing according to claim 2, characterized in that: It also includes a ladder (3) suitable for forming a fixed connection with the vehicle body (100), and the driving member (24) forms an articulated connection with the ladder (3).

4. The movable walkway railing according to claim 3, characterized in that: The driving member (24) is a tilting ladder, and a limiting member (31) is arranged on the climbing ladder (3) and is detachably connected to the driving member (24).

5. The movable walkway railing according to claim 4, characterized in that: The limiting member (31) and the driving member (24) are detachably fixedly connected via a latch.

6. The movable walkway railing according to claim 1, characterized in that: A connecting plate (25) is arranged on the column (11), and the first connecting rod (21) and the connecting plate (25) are connected in a hinged manner.

7. The movable walkway railing according to claim 1, characterized in that: It also includes a pivot plate (26), which is suitable for forming a fixed connection with the vehicle body (100), and the second connecting rod (22) is pivotally matched with the pivot plate (26).

8. The movable walkway railing according to claim 1, characterized in that: The column (11) is connected to a damper; one end of the damper is connected to the column (11), and the other end is suitable for being connected to the vehicle body (100).

9. The movable walkway railing according to claim 1, characterized in that: A mounting seat (13) is provided between the column (11) and the vehicle body (100), the mounting seat (13) being adapted to form a fixed connection with the vehicle body (100), and the column (11) and the mounting seat (13) forming a hinged fitting connection.

10. The movable walkway railing according to claim 1, characterized in that: The railing body (1) further comprises a crossbar (12) which is hingedly matched with the upright post (11).

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