Simple splicing type passenger stair

Abstract

The utility model discloses a simple and easy splicing type gangway, relates to the technical field of logistics transportation auxiliary equipment, including the car end connecting piece, first ladder section and second ladder section from top to bottom are connected in proper order, be equipped with the quick bolt shaft for being used for connecting with the female car rear beam on the car end connecting piece, install the connecting mechanism for splicing both between first ladder section and second ladder section, the connecting mechanism includes the through -hole of setting in the lower side end portion of first ladder section and the lateral plate of passing through, and the connecting lug plate of setting in the upper end portion of second ladder section, through the pin is in proper order and passes through the through -hole of first ladder section and the lug hole of second ladder section, realizes the detachable connection of first ladder section and second ladder section, the utility model discloses simple structure, convenient and fast splicing can guarantee the portability, realize enough total length simultaneously, greatly improved the flexibility of child -mother car transportation mode.

Description

Technical Field

[0001] This utility model relates to the field of logistics transportation auxiliary equipment technology, specifically to a simple modular loading ladder. Background Technology

[0002] In the current logistics and transportation industry, the "mother-daughter vehicle" transportation model is widely used due to its efficiency and flexibility. The daughter vehicle (small flatbed truck) needs to frequently load and unload from the mother vehicle (large flatbed truck). Currently, the common method of loading is using fixed "loading platforms" or "ladders." This method has the following significant drawbacks: 1. Strict site restrictions: Loading platforms are usually fixed facilities or large in size, and can only be used in specific sites (such as logistics parks or dedicated parking lots), which cannot meet the loading and unloading needs of any location such as en route, temporary or field sites. 2. Inconvenient to carry: Most existing portable boarding ladders are one-piece structures, and their length must be greater than or equal to the width of the mother car, resulting in an overall size that is too large, making them inconvenient to carry with the vehicle and taking up valuable onboard space.

[0003] 3. Safety issues: Shortening the ladder length for easier carrying results in an excessively large tilt angle, which not only increases the risk of the cart climbing but also makes it prone to collisions with the chassis, slippage, or even tipping over, posing a threat to the safety of operators. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of large size, inconvenient transportation, and troublesome assembly and disassembly of existing loading ladders, and to provide a simple and easy-to-assemble loading ladder. This loading ladder has a simple structure and is easy and quick to assemble. It can achieve sufficient total length while ensuring portability, which greatly improves the flexibility of the mother-daughter vehicle transportation mode.

[0005] This utility model includes a vehicle end connector, a first ladder section, and a second ladder section connected sequentially from top to bottom. The vehicle end connector is provided with a quick-connect pin for connecting with the rear side beam of the mother car. A connecting mechanism for splicing the first ladder section and the second ladder section is installed between them. The connecting mechanism includes a through hole located at the lower end of the first ladder section and penetrating its side plate, and a connecting ear plate located at the upper end of the second ladder section. The first ladder section and the second ladder section are detachably connected by a pin that passes through the through hole of the first ladder section and the ear plate hole of the second ladder section in sequence.

[0006] Preferably, a simple support leg is installed below the connecting mechanism, and the upper end of the simple support leg is provided with a connecting hole that passes through its left and right sides; the pin passes through the through hole of the first ladder section, the connecting hole of the simple support leg, and the ear plate hole of the second ladder section in sequence, so as to realize the splicing of the first ladder section and the second ladder section and the installation of the simple support leg.

[0007] Preferably, a locking lug is provided at the lower end of the first ladder section below the through hole, and a connecting hole is provided at the upper end of the simple support leg below the connecting hole one. An angle lock between the first ladder section and the second ladder section is achieved by passing a locking pin through the lug hole on the locking lug and the connecting hole two on the simple support leg.

[0008] Preferably, the bottom of the simple support leg is provided with a support foot plate, and the front and rear sides of the support foot plate are folded upward to form folded edges, with the angle between the folded edges and the support foot plate being 120°-150°.

[0009] Preferably, a grounding support plate is provided at the lower rear end of the second ladder section, and there is an angle of 15°-30° between the grounding support plate and the body of the second ladder section. The grounding support plate is in a horizontal state when the boarding ladder is in normal use, and the lower surface of the grounding support plate is provided with anti-slip texture.

[0010] Preferably, anti-slip treads are laid at intervals on the tread surfaces of both the first and second steps. The anti-slip treads are made of patterned steel plates, and the spacing between adjacent anti-slip treads is 150mm-200mm.

[0011] Preferably, the first and second ladder sections are provided in two sets, and the two sets of first ladder sections and the two sets of second ladder sections are arranged symmetrically about the vertical axis of symmetry of the vehicle end connector.

[0012] Preferably, there are 4-6 quick-connect pins, which are symmetrically distributed in pairs at the connection position between the upper end of the first step and the end connector. The quick-connect pins are provided with elastic pins for preventing detachment.

[0013] In summary, this utility model has the following beneficial effects: 1. This utility model achieves rapid connection between the vehicle end connector and the rear side beam of the mother car through quick-connect pins, and detachable connection between the first and second ladder sections through pins and connecting mechanisms. The entire assembly process is tool-free, simple and convenient, greatly improving the installation efficiency of the loading ladder. It adopts a unique "two-section folding" design, with detachable connections between the components. After disassembly, it is small in size and light in weight. When not in use, the loading ladder can be folded into a compact volume, about half the original length, which can be easily placed in the toolbox of the mother car or the daughter car, facilitating transportation and storage, and solving the pain point of the inconvenience of carrying long loading ladders. Through the combination of the two ladder sections, sufficient total length can be achieved while ensuring portability, thereby forming a gentle loading slope, which greatly reduces the angle when the daughter car climbs, avoiding the risk of hitting the chassis and tipping over. 2. The simple support legs installed below the connecting mechanism form a stable three-point support system with the ladder body and the ground, which can effectively support the loading ladder, significantly improve the structural rigidity and torsional resistance of the entire ladder frame, and ensure that it will not deform or shake under the heavy pressure of the cart; at the same time, the locking pin realizes the angle locking between the first and second ladder sections, preventing the loading ladder from changing angle during use; the grounding support plate at the lower rear end of the second ladder section increases the contact area between the loading ladder and the ground, and the lower surface is provided with anti-slip texture, further improving the stability and anti-slip performance of the loading ladder.

[0014] 3. The support foot plate at the bottom of the simple support leg is folded upwards on the front and back sides to form a folded edge, which can enhance the strength of the support foot plate and prevent it from deforming under force; the patterned steel plate anti-slip treads laid on the first and second ladder sections have a good anti-slip effect and ensure the safety of workers when going up and down the ladder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a simple, modular loading ladder according to this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a structural diagram of the first ladder section; Figure 4 This is a structural diagram of the second ladder section; Figure 5 This is a schematic diagram of a simplified support leg. Figure 6 This is a magnified view of a portion of the vehicle-end connector.

[0016] In the diagram: 1. Vehicle end connector, 2. First step, 3. Second step, 4. Quick-connect pin, 5. Connecting mechanism, 51. Through hole, 52. Connecting ear plate, 53. Pin, 6. Simple support leg, 61. Connecting hole one, 62. Support foot plate, 63. Folded edge, 64. Connecting hole two, 7. Locking ear plate, 8. Locking pin, 9. Grounding support plate, 10. Anti-slip pedal. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] The orientations mentioned in this specification are based on the orientation of the simple modular loading ladder of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0019] like Figures 1 to 6As shown, a simple modular loading ladder includes a vehicle end connector 1, a first ladder section 2, and a second ladder section 3 connected sequentially from top to bottom. The vehicle end connector 1 is equipped with four quick-connect pins 4 for connecting to the rear side beam of the mother car. These quick-connect pins 4 are symmetrically distributed in pairs at the connection points between the upper end of the first ladder section 2 and the vehicle end connector 1. Each quick-connect pin 4 has an elastic pin to prevent it from falling off during use, thus improving the reliability of the connection.

[0020] A connecting mechanism 5 for splicing the first stair section 2 and the second stair section 3 is installed between them. The connecting mechanism 5 includes a through hole 51 located at the lower end of the first stair section 2 and penetrating its side plate, and a connecting lug 52 located at the upper end of the second stair section 3. A simple support leg 6 is installed below the connecting mechanism 5. The upper end of the simple support leg 6 has a connecting hole 61 that penetrates its left and right sides. A pin 53 passes through the through hole 51 of the first stair section 2, the connecting hole 61 of the simple support leg 6, and the lug hole of the connecting lug 52 of the second stair section 3 in sequence. This allows for the simultaneous splicing of the first stair section 2 and the second stair section 3 and the installation of the simple support leg 6, simplifying the installation process.

[0021] At the lower end of the first stair section 2, below the through hole 51, there is a locking ear plate 7. At the upper end of the simple support leg 6, below the first connection hole 61, there is a second connection hole 64. By passing the locking pin 8 through the ear plate hole on the locking ear plate 7 and the second connection hole 64 on the simple support leg 6, the angle between the first stair section 2 and the second stair section 3 is locked, preventing the boarding ladder from shifting angle during use and improving safety.

[0022] The simple support leg 6 has a support foot plate 62 at its bottom. The front and rear sides of the support foot plate 62 are folded upward to form folded edges 63. The angle between the folded edges 63 and the support foot plate 62 is between 120° and 150°, which can be selected as needed. This angle setting can increase the contact area with the ground while ensuring the strength of the support foot plate 62, so that it has a better contact effect with the ground and prevents the simple support leg 6 from sinking into the soil.

[0023] The lower rear end of the second ladder section 3 is provided with a grounding support plate 9. The grounding support plate 9 and the body of the second ladder section 3 are at an angle of 15°-30°, which can be selected as needed. This ensures that the grounding support plate 9 is in a horizontal state when the ladder is in normal use, increasing the contact area with the ground. The lower surface of the grounding support plate 9 is provided with anti-slip texture, which can effectively prevent the ladder from slipping.

[0024] Anti-slip treads 10 are laid at intervals on the tread surfaces of the first section 2 and the second section 3. The anti-slip treads 10 are made of patterned steel plates, which have good anti-slip properties. The spacing between adjacent anti-slip treads 10 is between 150mm and 200mm, which can be selected as needed. This spacing is set in accordance with ergonomic principles to facilitate workers going up and down the ladder.

[0025] The first ladder section 2 and the second ladder section 3 are each provided in two sets. The two sets of the first ladder section 2 and the two sets of the second ladder section 3 are arranged symmetrically about the vertical axis of symmetry of the vehicle end connector 1, forming a double ladder structure, which further improves the stability and load-bearing capacity of the boarding ladder.

[0026] The installation process of this utility model is as follows: First, connect the vehicle end connector 1 to the rear side beam of the mother vehicle through the quick-connect pin 4, and fix it with an elastic pin to prevent it from falling off; then, align the through hole 51 at the lower end of the first ladder section 2 with the ear plate hole of the connecting ear plate 52 at the upper end of the second ladder section 3, and align the connecting hole 61 at the upper end of the simple support leg 6 with the through hole 51, and insert the pin 53 to achieve the initial connection of the three; finally, pass the locking pin 8 through the ear plate hole on the locking ear plate 7 and the connecting hole 64 on the simple support leg 6 to complete the angle locking between the first ladder section 2 and the second ladder section 3, at which point the boarding ladder can be put into use; by combining the two ladder sections, sufficient total length can be achieved while ensuring portability, thereby forming a gentle boarding slope, which greatly reduces the angle when the vehicle climbs, avoiding the risk of hitting the chassis and tipping over.

[0027] During disassembly, simply pull out the locking pin 8 and pin 53 in sequence to separate the first ladder section 2, the second ladder section 3 and the simple support leg 6. Then pull out the elastic pin on the quick-connect pin shaft 4 and remove the quick-connect pin shaft 4 to separate the car end connector 1 from the mother car. The disassembly process is simple and quick. It adopts a unique "two-section folding" design, which can fold the boarding ladder into a compact volume when not in use. The length is about half of the original length, which can be easily put into the toolbox of the mother car or the daughter car, solving the pain point of the inconvenience of carrying long boarding ladders.

[0028] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A simple, modular loading ladder, characterized in that: The system includes a vehicle end connector, a first ladder section, and a second ladder section connected sequentially from top to bottom. The vehicle end connector is equipped with a quick-connect pin for connecting to the rear side beam of the mother car. A connecting mechanism for splicing the first ladder section and the second ladder section is installed between them. The connecting mechanism includes a through hole located at the lower end of the first ladder section and penetrating its side plate, and a connecting lug plate located at the upper end of the second ladder section. The first ladder section and the second ladder section are detachably connected by a pin that passes through the through hole of the first ladder section and the lug plate hole of the second ladder section in sequence.

2. The simplified modular loading ladder as described in claim 1, characterized in that: A simple support leg is installed below the connecting mechanism. The upper end of the simple support leg is provided with a connecting hole that passes through its left and right sides. The pin passes through the through hole of the first ladder section, the connecting hole of the simple support leg, and the ear plate hole of the second ladder section in sequence, thereby realizing the splicing of the first ladder section and the second ladder section and the installation of the simple support leg.

3. A simple modular loading ladder as described in claim 2, characterized in that: The lower end of the first ladder section is provided with a locking ear plate below the through hole, and the upper end of the simple support leg is provided with a connecting hole two below the connecting hole one. The angle between the first ladder section and the second ladder section is locked by passing the locking pin through the ear plate hole on the locking ear plate and the connecting hole two on the simple support leg.

4. A simple modular loading ladder as described in claim 2, characterized in that: The simple support leg has a support foot plate at the bottom, and the front and rear sides of the support foot plate are folded upward to form folded edges. The angle between the folded edges and the support foot plate is 120°-150°.

5. A simple modular loading ladder as described in claim 1, characterized in that: The lower rear end of the second ladder section is provided with a grounding support plate. The grounding support plate and the body of the second ladder section are at an angle of 15°-30°. The grounding support plate is in a horizontal state when the ladder is in normal use, and the lower surface of the grounding support plate is provided with anti-slip texture.

6. A simplified modular loading ladder as described in claim 1, characterized in that: The first and second steps are both equipped with anti-slip treads at intervals on their tread surfaces. The anti-slip treads are made of patterned steel plates, and the spacing between adjacent anti-slip treads is 150mm-200mm.

7. A simplified modular loading ladder as described in claim 1, characterized in that: The first and second ladder sections are each provided in two sets, and the two sets of first ladder sections and the two sets of second ladder sections are arranged symmetrically about the vertical axis of symmetry of the vehicle end connector.

8. A simplified modular loading ladder as described in claim 1, characterized in that: There are 4-6 quick-connect pins, which are symmetrically distributed in pairs at the connection position between the upper end of the first ladder section and the vehicle end connector. Each quick-connect pin is provided with an elastic pin for preventing detachment.

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