Up-down folding ladder for train overhaul and maintenance

Abstract

The utility model discloses an up-and-down folding ladder for train overhaul and maintenance, which comprises a ladder body and a first supporting piece, a base and a bearing piece are sequentially and rotatably arranged on one side of the ladder body from bottom to top, and the folding ladder is switched between a folding state and an unfolding state based on the rotation of the base and the bearing piece. The first supporting piece is movably arranged on the side, close to the base, of the bearing piece, and the first supporting piece is switched between the storage state and the supporting state based on the movable arrangement of the first supporting piece. During working, the bearing part and the base are in an unfolded state, and the bearing surface of the bearing part provides an additional supporting point for overhauling workers in the garage to get on and off the train, so that the problem that the overhauling workers in the garage are difficult to get on and off the train due to height difference between the train door and the line in the garage is solved; after an overhaul worker in a warehouse gets on and off a train to complete overhaul and maintenance work, the first supporting piece is switched to the storage state, the up-down folding ladder for train overhaul and maintenance can be switched to the folding state, and the folding ladder is convenient to transfer and store.

Description

A folding ladder for train inspection and maintenance Technical Field

[0001] This utility model belongs to the field of folding ladder technology, and in particular relates to a folding ladder for train inspection and maintenance. Background Technology

[0002] Trains, also known as railway trains, green trains, passenger trains, etc., refer to vehicles that run on railway tracks. After a period of operation, trains need to be inspected and maintained. Most of the inspection and maintenance work is carried out in the maintenance depot. There is a large height difference between the tracks inside the depot and the train, resulting in a certain height difference between the train doors and the tracks inside the depot. This makes it difficult for maintenance personnel to get on and off the train during inspection and maintenance. Summary of the Invention

[0003] The purpose of this invention is to provide a folding ladder for train inspection and maintenance, in order to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides a folding ladder for train maintenance, comprising a ladder body and a first support member. A base and a support member are rotatably arranged on one side of the ladder body from bottom to top. The rotation axes of the base and the support member are both perpendicular to a first direction, which is the direction from the base toward the support member. Based on the rotation of the base and the support member, the folding ladder switches between a folded state and an unfolded state.

[0005] The first support member is movably disposed on the side of the carrier member near the base. Based on the movable arrangement of the first support member, the first support member switches between a storage state and a support state. When the first support member is in the storage state, the first support member is attached to the side of the carrier member near the base. When the first support member is in the support state, both ends of the first support member are in contact with the carrier member and the base, respectively.

[0006] Optionally, the first support member is rotatably connected to the end of the carrier member away from the ladder body, and the end of the first support member away from the carrier member is detachably connected to the base; the rotation axis of the first support member is parallel to the rotation axis of the carrier member.

[0007] Optionally, a fixing plate is fixedly provided at the end of the base away from the ladder body, and a socket groove is provided at the end of the first support member away from the load-bearing member. When the folding ladder is in the unfolded state, the fixing plate and the socket groove are inserted into each other.

[0008] Optionally, the first support member includes two parallel L-shaped plates with an L-shaped cross-section. The two L-shaped plates are rotatably connected to the two ends of the rotation axis of the support member. When the support member is in a folded state, the L-shaped plates wrap around the outside of the support member.

[0009] Optionally, there are at least two sets of the support members, which are arranged at intervals. When the folding ladder is in the unfolded state, a second support member is detachably connected between two adjacent sets of the support members.

[0010] Optionally, the upper support member in two adjacent sets of support members is rotatably connected to the second support member, and the lower support member in two adjacent sets of support members is inserted into the second support member, with the rotating end and the insertion end of the second support member respectively located at the upper and lower ends of the second support member.

[0011] Optionally, the bearing area of ​​the bearing member decreases sequentially from bottom to top.

[0012] Optionally, the ladder body includes two parallel fixed rods, and the support member and the base are rotatably disposed between the two fixed rods. When the folding ladder is in a folded state, the support member and the base are arranged between the two fixed rods.

[0013] Optionally, a base plate is fixedly provided at one end of the two fixing rods near the base. The base plate is arranged perpendicularly to the fixing rods and is located on the same side as the base. The base plate is arranged in contact with the ground.

[0014] Optionally, the ladder body has a wheel rotatably connected to one end near the base, and the wheel is located on the side of the ladder body opposite to the base.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects:

[0016] This utility model of a folding ladder includes two states: an unfolded state and a folded state. When the folding ladder for train maintenance is in the folded state, that is, when the support component and the base are folded, both the support component and the base are arranged close to the ladder body, reducing the space occupied by the folding ladder and facilitating transportation. When the folding ladder needs to be switched to the unfolded state, the base is rotated to make the base contact the ground, and then the support component is rotated. When the support component and the base are positioned opposite each other, the movement of the first support component is controlled to switch the first support component from the stored state to the supporting state, so that both ends of the first support component contact the support component and the base respectively. The base supports the support component through the first support component. At the same time, since the support component is rotatably connected to the ladder body, the ladder body also supports the support component. The ladder body, the base, the first support component, and the support component form a closed loop structure, ensuring the stability of the bearing surface of the support component when bearing weight.

[0017] When using the folding ladder for train maintenance, the unfolded ladder is placed in the designated location. In this embodiment, the location is between the train door and the tracks inside the depot. The side of the ladder without the base and support is positioned on the side of the train door, while the side with the base and support is positioned on the side of the tracks inside the depot. When maintenance personnel inside the depot go up and down, the support surface of the support provides additional support points for them, solving the problem of difficulty for maintenance personnel to get on and off the train due to the height difference between the train door and the tracks inside the depot. After the maintenance personnel have completed their maintenance work, the first support is switched to the storage state, and the base and support are rotated to switch the folding ladder to the folded state, facilitating the transport and storage of the ladder. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the unfolded structure of the upper and lower folding ladder for train inspection and maintenance of this utility model;

[0020] Figure 2 is a magnified view of part A in Figure 1;

[0021] Figure 3 is a schematic diagram of another structure of the upper and lower folding ladder for train inspection and maintenance of this utility model;

[0022] Figure 4 is a schematic diagram of the folded structure of the upper and lower folding ladder for train inspection and maintenance of this utility model.

[0023] The components include: 1. Ladder body; 11. Fixing rod; 12. Base plate; 13. Wheel; 2. Base; 3. Bearing component; 4. First support component; 41. Socket groove; 42. L-shaped plate; 5. Fixing plate; 6. Second support component. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Referring to the accompanying drawings, this utility model provides a folding ladder for train maintenance, including a ladder body 1 and a first support member 4. A base 2 and a bearing member 3 are rotatably arranged on one side of the ladder body 1 from bottom to top. The rotation axes of the base 2 and the bearing member 3 are both perpendicular to a first direction, which is the direction from the base 2 toward the bearing member 3. Based on the rotation of the base 2 and the bearing member 3, the folding ladder switches between a folded state and an unfolded state. The first support member 4 is movably arranged on the side of the bearing member 3 near the base 2. Based on the movable arrangement of the first support member 4, the first support member 4 switches between a retracted state and a supported state. When the first support member 4 is in the retracted state, the first support member 4 is close to the side of the bearing member 3 near the base 2. When the first support member 4 is in the supported state, both ends of the first support member 4 are in contact with the bearing member 3 and the base 2, respectively.

[0026] This utility model of a folding ladder includes two states: an unfolded state and a folded state. When the upper and lower folding ladder for train maintenance is in the folded state, that is, when the support member 3 and the base 2 are in the folded state, the support member 3 and the base 2 are arranged close to the ladder body 1, reducing the space occupied by the folding ladder and facilitating transportation. When the upper and lower folding ladder for train maintenance needs to be switched to the unfolded state, the base 2 is rotated to make the base 2 contact the ground, and then the support member 3 is rotated. When the support member 3 and the base 2 are set opposite each other, the movement of the first support member 4 is controlled to switch the first support member 4 from the stored state to the supporting state, so that the two ends of the first support member 4 contact the support member 3 and the base 2 respectively. The base 2 supports the support member 3 through the first support member 4. At the same time, since the support member 3 is rotatably connected to the ladder body 1, the ladder body 1 also supports the support member 3. The ladder body 1, the base 2, the first support member 4, and the support member 3 form a closed loop structure to ensure the stability of the bearing surface of the support member 3 when bearing weight.

[0027] When the folding ladder for train maintenance is in use, the unfolded ladder is placed in the usage position. In this embodiment, the usage position is between the train door and the depot track. The side of the ladder body 1 without the base 2 and the support member 3 is arranged on the side of the train door, that is, the side of the ladder body 1 with the base 2 and the support member 3 is arranged on the side of the depot track. When maintenance personnel in the depot go up and down, the bearing surface of the support member 3 provides an additional support point for the maintenance personnel to get on and off the train, which solves the problem of difficulty for maintenance personnel to get on and off the train due to the height difference between the train door and the depot track. After the maintenance personnel in the depot have completed the maintenance work, the first support member is switched to the storage state, and the base and the support member are rotated to switch the folding ladder for train maintenance to the folded state, which facilitates the transportation and storage of the ladder.

[0028] In this embodiment, the first support member 4 can be movably disposed on the side of the carrier member 3 near the base 2 in various ways, including rotational connection or folding. When folding is used to achieve the movable disposal, the first support member 4 adopts a structure similar to a folding table leg. By controlling the folding of the first support member 4, the first support member 4 can switch between a folded state and a supporting state. Preferably, the first support member 4 is rotatably connected to the end of the carrier member 3 away from the ladder body 1, and the end of the first support member 4 away from the carrier member 3 is detachably connected to the base 2; the rotation axis of the first support member 4 is parallel to the rotation axis of the carrier member 3. In this embodiment, by rotating the first support member 4 around its rotation axis, the folded state and the unfolded state of the first support member 4 can be switched. When it is necessary to switch the first support member 4 from the folded state to the unfolded state, the first support member 4 is rotated. When the first support member 4 reaches the designated position, the other end of the first support member 4 is detachably connected to the base 2, thus completing the work of supporting the carrier member 3 through the first support member 4. The operation is convenient.

[0029] In a further optimized design, a fixing plate 5 is fixedly installed at the end of the base 2 away from the ladder body 1, and a socket groove 41 is provided at the end of the first support member 4 away from the load-bearing member 3. When the folding ladder is in the unfolded state, the fixing plate 5 and the socket groove 41 are inserted into each other. In this embodiment, the first support member 4 switches between the folded and unfolded states by rotation. The end of the first support member 4 away from the load-bearing member 3 is detachably connected by inserting the fixing plate 5 and the socket groove 41. The insertion operation is convenient; simply align the fixing plate 5 and the socket groove 41 during the rotation of the first support member 4 and insert them to quickly achieve a detachable connection between the end of the first support member 4 away from the load-bearing member 3 and the base 2.

[0030] Preferably, the first support member 4 includes two parallel L-shaped plates 42, each with an L-shaped cross-section. The two L-shaped plates 42 are rotatably connected to both ends of the rotation axis of the support member 3. When the support member 3 is in a folded state, the L-shaped plates 42 wrap around the outside of the support member 3. In this embodiment, the first support member 4 includes two parallel L-shaped plates 42. The rotation of the two L-shaped plates 42 enables the switching between the folded and unfolded states of the first support member 4. Furthermore, by defining the shape of the L-shaped plates 42, this embodiment ensures that when the support member 3 is in a folded state, the L-shaped plates 42 wrap around the outside of the support member 3, making the two L-shaped plates 42 integrated with the support member 3 in the folded state, further reducing the volume occupied by the folding ladder. In some embodiments, a connecting rod is fixedly connected between the two L-shaped plates 42, allowing the two L-shaped plates 42 to rotate synchronously and ensuring that the L-shaped plates 42 are connected as a single structure, thus improving the strength of the first support member 4.

[0031] In this embodiment, the number of load-bearing components 3 in the train maintenance ladder can be one set, or two or more sets. When the number of load-bearing components 3 is one set, as shown in Figure 1, this is suitable for situations where the height difference between the train door and the track inside the depot is small. One set of load-bearing components 3 is sufficient to support and facilitate the movement of maintenance personnel up and down the depot. Of course, the train maintenance ladder in this embodiment can not only be used for moving up and down the train, but also for climbing construction and other tasks. In a further optimized solution, there are no fewer than two sets of load-bearing components 3, which are spaced apart. When the ladder is in the unfolded state, a second support 6 is detachably connected between adjacent sets of load-bearing components 3. In this embodiment, by increasing the number of load-bearing components 3, the train maintenance ladder can be used for a wider range of height differences between the train door and the track inside the depot. The second support 6 supports the adjacent load-bearing components 3, giving the load-bearing components 3 better stability in the unfolded state.

[0032] To address the height difference between the train door and the tracks inside the depot, two technical solutions are proposed: Solution 1: Select a folding ladder with an appropriate number of load-bearing components (3). This involves calculating the optimal number of load-bearing components (3) between the train door and the tracks to facilitate personnel access for maintenance and inspection, and then selecting a ladder with the appropriate number of load-bearing components (3). Solution 2: Select a folding ladder suitable for larger height differences. Again, based on the height difference, calculate the optimal number of load-bearing components (3) between the train door and the tracks to facilitate personnel access for maintenance and inspection, and then rotate an appropriate number of load-bearing components (3) to unfold them while keeping the remaining components folded, thus broadening the applicability of the folding ladder.

[0033] In a further optimized design, the upper support member 3 of two adjacent sets of support members 3 is rotatably connected to the second support member 6, while the lower support member 3 of two adjacent sets of support members 3 is inserted into the second support member 6. The rotating end and the insertion end of the second support member 6 are respectively located at its upper and lower ends. In this embodiment, the second support member 6 has the same structure as the first support member 4, both having a rotatable connection at one end and an insertion connection at the other. Regardless of whether the second support member 6 is in a folded or unfolded state, the upper support member 3 restricts other movements of the second support member 6 through the rotatable connection, ensuring that the two remain connected. This allows for quick switching between the folded and unfolded states of the second support member 6. Furthermore, the insertion operation is convenient; simply align and insert the insertion structure during the rotation of the second support member 6 to quickly achieve a detachable connection between the second support member 6 and the lower support member 3.

[0034] Preferably, the bearing area of ​​the bearing member 3 decreases sequentially from bottom to top. This can be achieved by controlling the distance between the end of the bearing member 3 away from the ladder body 1 and the ladder body 1. That is, the distance between the end of the bearing member 3 away from the ladder body 1 and the ladder body 1 decreases sequentially from bottom to top, ensuring that each layer of the bearing member 3 has a certain and effective bearing surface, that is, ensuring that each layer has a bearing area that can be used by warehouse inspection and maintenance personnel to step on, further ensuring the safety of warehouse inspection and maintenance personnel going up and down.

[0035] In a further optimized design, the ladder body 1 includes two parallel fixed rods 11. The support member 3 and the base 2 are rotatably positioned between the two fixed rods 11. When the ladder is folded, the support member 3 and the base 2 are positioned between the two fixed rods 11. In this embodiment, the width of both the support member 3 and the base 2 in the first direction is less than the distance between the two fixed rods 11, ensuring that when the support member 3 and the base 2 are folded, they can be positioned between the two fixed rods 11, further reducing the space occupied by the upper and lower folding ladders.

[0036] In a further optimized design, a base plate 12 is fixedly mounted on one end of each of the two fixed rods 11 near the base 2. The base plate 12 is arranged perpendicularly to the fixed rods 11 and is located on the same side as the base 2. The base plate 12 is flush with the ground. In this embodiment, when the upper and lower folding ladders are placed upright, the ground supports the ladder body 1 through the contact between the base plate 12 and the ground. During the rotation of the base 2, the base plate 12 restricts the rotation angle of the base 2. Preferably, a wheel 13 is rotatably connected to one end of the ladder body 1 near the base 2. The wheel 13 is located on the side of the ladder body 1 facing away from the base 2. In this embodiment, during the transfer and movement of the upper and lower folding ladders, the wheel 13 drives the upper and lower folding ladders to move, reducing the difficulty for workers to move the upper and lower folding ladders. Since the base plate 12 and the wheel 13 are located on opposite sides of the ladder body 1, when the upper and lower folding ladders are placed upright, both the base plate 12 and the wheel 13 are flush with the ground, jointly supporting the ladder body 1 and ensuring the stability of the upper and lower folding ladders when placed upright.

[0037] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this application; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0038] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A folding ladder for train inspection and maintenance, characterized in that, The system includes: a ladder body (1), on one side of which a base (2) and a support member (3) are rotatably arranged from bottom to top. The rotation axes of the base (2) and the support member (3) are both perpendicular to a first direction, which is the direction from the base (2) toward the support member (3). Based on the rotation of the base (2) and the support member (3), the folding ladder switches between a folded state and an unfolded state; and a first support member (4), which is movably arranged on the side of the support member (3) near the base (2). Based on the movable arrangement of the first support member (4), the first support member (4) switches between a stowed state and a supported state. When the first support member (4) is in the stowed state, it is attached to the side of the support member (3) near the base (2). When the first support member (4) is in the supported state, both ends of the first support member (4) are in contact with the support member (3) and the base (2), respectively.

2. The folding ladder for train inspection and maintenance according to claim 1, characterized in that, The first support member (4) is rotatably connected to the end of the bearing member (3) away from the ladder body (1), and the end of the first support member (4) away from the bearing member (3) is detachably connected to the base (2); the rotation axis of the first support member (4) is parallel to the rotation axis of the bearing member (3).

3. The folding ladder for train inspection and maintenance according to claim 2, characterized in that, A fixing plate (5) is fixedly provided at one end of the base (2) away from the ladder body (1), and a socket groove (41) is provided at one end of the first support member (4) away from the bearing member (3). When the folding ladder is in the unfolded state, the fixing plate (5) and the socket groove (41) are inserted into each other.

4. The folding ladder for train inspection and maintenance according to claim 2, characterized in that, The first support member (4) includes two parallel L-shaped plates (42). The cross-section of the L-shaped plate (42) is L-shaped. The two L-shaped plates (42) are respectively rotatably connected to the two ends of the rotation axis of the support member (3). When the support member (3) is in a folded state, the L-shaped plate (42) is located on one side of the support member (3).

5. The folding ladder for train inspection and maintenance according to claim 1, characterized in that, The support member (3) is provided in at least two sets, and the support member (3) is arranged at intervals. When the folding ladder is in the unfolded state, a second support member (6) is detachably connected between two adjacent sets of support members (3).

6. The folding ladder for train inspection and maintenance according to claim 5, characterized in that, The upper support member (3) of the two adjacent sets of support members (3) is rotatably connected to the second support member (6), and the lower support member (3) of the two adjacent sets of support members (3) is inserted into the second support member (6), and the rotating end and the insertion end of the second support member (6) are respectively located at the upper and lower ends of the second support member (6).

7. The folding ladder for train inspection and maintenance according to claim 5, characterized in that, The bearing area of ​​the bearing member (3) decreases sequentially from bottom to top.

8. The folding ladder for train inspection and maintenance according to claim 1, characterized in that, The ladder body (1) includes two parallel fixed rods (11). The support member (3) and the base (2) are rotatably disposed between the two fixed rods (11). When the folding ladder is in a folded state, the support member (3) and the base (2) are arranged between the two fixed rods (11).

9. The folding ladder for train inspection and maintenance according to claim 8, characterized in that, A base plate (12) is fixedly installed at one end of the two fixed rods (11) near the base (2). The base plate (12) is arranged perpendicularly to the fixed rods (11) and the base (2) is arranged on the same side. The base plate (12) is arranged in close contact with the ground.

10. The folding ladder for train inspection and maintenance according to claim 1, characterized in that, The ladder body (1) has a wheel (13) rotatably connected to one end near the base (2), and the wheel (13) is located on the side of the ladder body (1) away from the base (2).

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