Modular combined antiskid boarding ladder structure for locomotive

Abstract

The utility model discloses a modularization combined antiskid gangway structure for locomotive belongs to locomotive pedal technical field is used for installing on the two groups of gangway frame of left and right parallel arrangement on the car body still includes a plurality of single stage pedal, two groups gangway frame is equipped with a plurality of pairs of mounting seat, and each pair of mounting seat is parallelly arranged, a plurality of pairs mounting seat is interval setting gradually in ladder shape, the mounting seat includes support plate, be equipped with connecting hole on support plate, the both sides of single stage pedal all are equipped with connecting groove, and the fastener fixed connection is passed through connecting groove and connecting hole cooperation after cooperation. The utility model discloses a modularization combined antiskid gangway structure for locomotive can effectively solve the pedal of prior art not having universality, cannot adapt to the installation of different locomotive types, and after installing and fixing, cannot adjust the front -back interval between adjacent pedal etc.

Description

Technical Field

[0001] This utility model relates to the field of locomotive step technology, specifically to a modular and combined anti-slip boarding ladder structure for locomotives. Background Technology

[0002] Traditional diesel locomotives typically employ fixed metal structures for their boarding ramps, such as welded steel ladders or riveted frames, primarily made of carbon steel. These ramps are fixed to the end of the underframe using bolts or welding, with a design prioritizing strength and durability. However, the spacing between the two boarding frames varies depending on the locomotive type. This necessitates the design of differently wide steps to accommodate different locomotive types. Furthermore, once welded or riveted, the distance between adjacent steps cannot be adjusted, requiring multiple production lines to meet the needs of different locomotive types and thus increasing costs. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a modular, combined, anti-slip loading ladder structure for locomotives, aiming to solve the problems of the existing technology's lack of versatility in the steps, inability to adapt to different locomotive types, and inability to adjust the front-to-back spacing between adjacent steps after installation. To achieve the above objectives, this utility model provides the following technical solution:

[0004] A modular, combined, anti-slip loading ladder structure for locomotives is used for installation on two sets of loading racks arranged parallel to each other on the car body, and includes several single-step steps; several pairs of mounting seats are provided on the two sets of loading racks, each pair of mounting seats being arranged parallel to each other; the several pairs of mounting seats are arranged in a stepped manner at intervals; each mounting seat includes a support plate; the support plate has connecting holes; both sides of each single-step step have connecting grooves, which are fixedly connected by fasteners after mating with the connecting holes; the connecting holes have a pre-reserved gap in the x-axis direction of the support plate to accommodate the installation of single-step steps between two sets of loading racks with different intervals; the connecting grooves have a pre-reserved gap in the y-axis direction to adjust the spacing between adjacent single-step steps in the y-axis direction.

[0005] Furthermore, the connecting groove of the single-stage pedal is a sliding groove arranged along the y-axis direction; the bottom of the sliding groove is open; the fastener includes a fastening screw and a fastening seat slidably disposed in the sliding groove; the fastening screw passes through the connecting hole and the bottom opening of the sliding groove and is fixedly connected to the fastening seat to fix the single-stage pedal to the support plate.

[0006] Furthermore, the bottom of the fastening seat is provided with a threaded blind hole; the fastening screw includes a bolt and a circular pressure plate disposed at one end of the bolt; the bolt can pass through the connecting hole; the diameter of the pressure plate is larger than the width of the connecting hole, and the single-stage pedal is pressed against the support plate through threaded engagement.

[0007] Furthermore, the connecting hole is an oblong hole, and its length direction is arranged along the x-axis.

[0008] Furthermore, the single-stage pedal is evenly provided with several drainage holes.

[0009] Furthermore, the single-stage pedal is evenly provided with several anti-slip teeth to increase contact friction.

[0010] Furthermore, the bottom of the single-stage pedal is provided with a cross-shaped reinforcing rib.

[0011] Furthermore, a baffle is provided at the front end of the single-stage pedal; the baffle is arranged perpendicularly to the single-stage pedal.

[0012] Furthermore, limiting plates are provided at both the front and rear ends of the slide to limit the movement range of the fastening seat.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a modular, combined, anti-slip loading ladder structure for locomotives. It features sliding grooves on both sides of each single-step board, along with sliding fastening seats and screws within these grooves. The connecting holes on the support plates of each locomotive are machined into elongated oval holes, allowing the single-step boards to be installed on different types of locomotives at varying intervals on the loading rack. The distance between adjacent single-step boards can be adjusted to improve boarding comfort. Each single-step board has drainage holes and an anti-slip tooth structure, enhancing its safety in harsh environments such as rain, snow, and oil. The fastening screws are installed below the sliding grooves and are concealed by the single-step boards, resulting in a clean, unobstructed appearance and reducing the risk of scratches. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention installed on a locomotive;

[0016] Figure 2 This is a side view of the present invention installed on a locomotive;

[0017] Figure 3 This is a structural diagram of the single-stage pedal of this utility model;

[0018] Figure 4 for Figure 1 Enlarged view of point A;

[0019] Figure 5 This is a structural diagram of the support plate of this utility model;

[0020] The attached diagram is labeled as follows: 1. Single-stage pedal; 2. Support plate; 3. Slide groove; 4. Fastening seat; 5. Bolt; 6. Pressure plate; 7. Oblong hole; 8. Drain hole; 9. Anti-slip teeth; 10. Reinforcing rib; 11. Baffle. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0024] In the description of this utility model, "multiple" means two or more.

[0025] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0026] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] Example

[0029] See attached Figures 1-5This embodiment provides a modular, combined, anti-slip boarding ladder structure for locomotives, mainly composed of two sets of boarding frames, several pairs of mounting seats, three single-step ramps 1, and matching fasteners. The two sets of boarding frames, made of carbon steel, are fixed to the locomotive body in parallel left and right directions and are secured by welding or other methods. The spacing between the two sets of boarding frames varies depending on the locomotive model. Each pair of mounting seats corresponds to one single-step ramp 1, arranged in a stepped pattern along the height of the boarding frame. Each pair of mounting seats is welded to the opposite inner sidewalls of the two sets of boarding frames, and the height of the same pair of mounting seats is consistent and they are parallel to each other. The single-step ramp 1 is movable in the x-axis direction to connect with the support plate 2 to accommodate installation on boarding frames with different spacing; the single-step ramp 1 is also movable in the y-axis direction to adjust the spacing between adjacent single-step ramps 1 to ensure boarding comfort. The y-axis direction is defined as the direction in which a pedestrian moves along the single-step ramp 1, and the x-axis is the left-right direction when a pedestrian moves along the single-step ramp 1.

[0030] In this embodiment, the mounting base includes a support plate 2 and reinforcing ribs welded to the bottom of the support plate 2 (to enhance the load-bearing capacity of the support plate 2). The support plate 2 is a rectangular steel plate, vertically welded to the side wall of the loading rack, with its surface perpendicular to the side wall of the loading rack (ensuring that the single-stage step 1 is installed horizontally); the support plate 2 has connecting holes, which are oblong holes 7, arranged along the x-axis (left-right direction) in the length direction, with reserved adjustment clearance in the x-axis direction to adapt to different loading rack intervals; two connecting holes are symmetrically arranged on each support plate 2 to ensure the connection stability of the two sides of the single-stage step 1.

[0031] In this embodiment, the single-stage pedal 1 can be a steel plate formed by integral stamping. Connecting grooves are provided on both sides of the lower end of the single-stage pedal 1 for connecting with the support plate 2. The connecting groove is set as a slide groove 3, which is set at the lower end of the left and right side edges of the single-stage pedal 1, along the y-axis (front and back direction). The cross-section of the slide groove 3 is an inverted "U" shape, and the width of the bottom opening is smaller than the width of the middle part of the slide groove 3, which can prevent the fastening seat 4 from falling off from the opening end. The length of the slide groove 3 is greater than the length of the support plate 2 along the y-axis direction. Steel plates are welded to both the front and rear ends of the slide groove 3 as limiting plates. The limiting plates close the openings at the front and rear ends of the slide groove 3 to prevent the fastening seat 4 from sliding out of the slide groove 3.

[0032] In this embodiment, the fastener includes a fastening seat 4 and a fastening screw, which are used to fix the single-stage pedal 1 on the support plate 2. The fastening seat 4 is designed to fit the internal structure of the slide groove 3 and can move along the slide groove 3 in the y-axis direction. A threaded blind hole is provided at the center of its bottom for engaging with the fastening screw. The fastening screw is integrally formed by a bolt 5 and a circular pressure plate 6. The diameter of the pressure plate 6 is larger than the width of the connecting hole of the support plate 2 to ensure that the support plate 2 can be pressed tightly after tightening.

[0033] In this embodiment, a number of anti-slip teeth 9 are uniformly provided on the upper surface of the single-stage pedal 1, and are uniformly arranged in a rectangular shape along the x and y axes. The tips of the anti-slip teeth 9 are blunted to prevent scratches. At the same time, a number of drainage holes 8 are uniformly provided on the single-stage pedal 1, and are also uniformly distributed in a matrix along the x and y axes, for drainage in rainy and snowy weather and to reduce water accumulation.

[0034] In this embodiment, a cross-shaped reinforcing rib 10 is welded to the bottom of the single-stage pedal 1. The rib is formed by thick steel plate, and the intersection point coincides with the center of the pedal to improve the load-bearing capacity of the pedal. A baffle 11 is welded to the front end of the pedal, which is perpendicular to the upper surface of the pedal to prevent the foot from sliding forward when boarding the vehicle.

[0035] Installation process of this utility model:

[0036] (1) Adapting to different boarding rack intervals (x-axis adjustment): According to the boarding rack interval of the target locomotive, first place the single-stage pedal 1 on the corresponding support plate 2 of the two sets of boarding racks, so that the sliding groove 3 on both sides of the single-stage pedal 1 is aligned with the connecting hole of the support plate 2, and simultaneously slide the fastening seat 4 so that its threaded blind hole is aligned with the connecting hole of the support plate 2; pass the bolt 5 end of the fastening screw through the connecting hole from below the support plate 2, and then through the bottom opening of the sliding groove 3, and screw it into the threaded blind hole of the fastening seat 4 (do not tighten temporarily); at this time, since the connecting hole is an oblong hole 7, the single-stage pedal 1 can be pushed to move left and right until the distance between the two sides of the single-stage pedal 1 and the boarding rack is uniform, and initially tighten the fastening screw (not completely fixed, leave adjustment margin).

[0037] (2) Adjust the distance between adjacent pedals (adjustment in the y-axis direction): After the left and right positions of the single-stage pedal 1 are determined, push the single-stage pedal 1 along the y-axis direction according to the boarding comfort requirements: Since the fastening seat 4 can slide in the slide groove 3, the single-stage pedal 1 will move back and forth relative to the fastening seat 4 until a suitable distance is formed with the adjacent pedals above and below; After confirming the position, tighten the fastening screw with a wrench: At this time, the pressure plate 6 will press tightly on the lower surface of the support plate 2, and the fastening seat 4 will press the inner wall of the pedal in the slide groove 3, and fix the pedal by friction and the pre-tightening force of the bolt 5 to complete the installation.

[0038] After assembly, the three single-stage steps 1 are arranged in a stepped manner along the boarding frame, and the components are firmly connected. The anti-slip teeth 9 and drainage holes 8 on the single-stage steps 1 can effectively cope with rain, snow and oily environments, ensuring safety. At the same time, the fastening screws and fastening seats 4 are hidden under the slide grooves 3, and there are no protrusions on the surface of the steps, which can avoid the risk of scratches when boarding. If the locomotive needs to be replaced or the spacing needs to be adjusted in the future, the fastening screws can be loosened to make repeated adjustments without disassembling or replacing parts.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A modular, combined, anti-slip loading ladder structure for locomotives, used for installation on two sets of loading racks arranged parallel to each other on the locomotive body, characterized in that: It also includes several single-stage pedals (1); several pairs of mounting seats are provided on the two sets of boarding racks, and each pair of mounting seats is arranged parallel to each other; the several pairs of mounting seats are arranged in a stepped interval; the mounting seat includes a support plate (2); the support plate (2) is provided with connecting holes; both sides of the single-stage pedal (1) are provided with connecting grooves, and are fixedly connected by fasteners after the connecting grooves and connecting holes are engaged; the connecting holes have a reserved gap in the x-axis direction of the support plate (2), which can accommodate the installation of the single-stage pedal (1) between two sets of boarding racks with different intervals; the connecting grooves have a reserved gap in the y-axis direction, which can adjust the spacing of adjacent single-stage pedals (1) in the y-axis direction.

2. The modular combined anti-slip boarding ladder structure for locomotives according to claim 1, characterized in that: The connecting groove of the single-stage pedal (1) is a sliding groove (3) arranged along the y-axis direction; the bottom of the sliding groove (3) is open; the fastener includes a fastening screw and a fastening seat (4) slidably arranged in the sliding groove (3); the fastening screw passes through the connecting hole and the bottom opening of the sliding groove (3) and is fixedly connected to the fastening seat (4) to fix the single-stage pedal (1) on the support plate (2).

3. The modular combined anti-slip boarding ladder structure for locomotives according to claim 2, characterized in that: The fastening seat (4) has a threaded blind hole at the bottom; the fastening screw includes a bolt (5) and a circular pressure plate (6) at one end of the bolt (5); the bolt (5) can pass through the connecting hole; the diameter of the pressure plate (6) is greater than the width of the connecting hole, and the single-stage pedal (1) is pressed against the support plate (2) by threaded engagement.

4. The modular combined anti-slip boarding ladder structure for locomotives according to claim 1, characterized in that: The connecting hole is an oblong hole (7), and its length direction is arranged along the x-axis.

5. The modular combined anti-slip boarding ladder structure for locomotives according to claim 1, characterized in that: The single-stage pedal (1) is provided with several drainage holes (8) evenly distributed.

6. The modular combined anti-slip boarding ladder structure for locomotives according to claim 1, characterized in that: The single-stage pedal (1) is uniformly provided with several anti-slip teeth (9) to increase the contact friction.

7. The modular combined anti-slip boarding ladder structure for locomotives according to claim 1, characterized in that: The bottom of the single-stage pedal (1) is provided with a cross-shaped reinforcing rib (10).

8. The modular combined anti-slip boarding ladder structure for locomotives according to claim 1, characterized in that: The front end of the single-stage pedal (1) is provided with a baffle (11); the baffle (11) is arranged perpendicularly to the single-stage pedal (1).

9. A modular, combined, anti-slip boarding ladder structure for locomotives according to claim 2, characterized in that: Limiting plates are provided at both the front and rear ends of the slide (3) to limit the movement range of the fastening seat (4).

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