Cabin climbing ladder used for being installed on side face of vehicle
A foldable and deployable vehicle-side entry ladder system with adjustable support addresses the cumbersome deployment and stability issues of H-shaped ladders, offering easy setup, stable footing, and safe vehicle access.
Patent Information
- Application Number
- CN202423140863.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In the prior art, the vehicle boarding ladder is inconvenient to use, requiring cumbersome installation and retraction process, and when climbing, the body is close to the side of the vehicle, the area under the feet is small, so it is inconvenient to climb.
A seating ladder including an upper ladder, a lower ladder and a rectangular panel is designed, and can be quickly expanded and retracted through a fixed shaft and a limiting plate. It is equipped with a liftable support frame for stable support. The upper ladder and the lower ladder are equipped with an anti-slip layer on the surfaces, which simplifies operation and improves safety.
It realizes the rapid expansion and recovery of the boarding ladder, enhances the convenience and safety of climbing, adapts to different road conditions, and reduces production costs.
Smart Images
Figure CN223100587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a boarding ladder, specifically to a boarding ladder for being installed on the side of a vehicle. Background Art
[0002] In the prior art, the boarding doors of some special vehicles are relatively high from the ground. For example, the boarding door of an oilfield exploration instrument vehicle is more than 1 meter from the ground, and workers need to rely on a ladder when boarding. The specific method is to hang an H-shaped ladder on one side of the boarding door on the side of the vehicle, and the workers can enter the boarding door by relying on the H-shaped ladder.
[0003] The main problems existing in using the H-shaped ladder are as follows: every time it is used, the H-shaped ladder needs to be hung and fixed on one side of the boarding door, and after use, the ladder needs to be retracted and put into the cabin. The working procedure is relatively cumbersome, and when a person climbs, the body is close to the side of the vehicle, and the force-bearing area under the feet is relatively small, so it is relatively inconvenient to climb. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a boarding ladder for being installed on the side of a vehicle. The unfolding and retracting of the utility model are very convenient, and it can facilitate people's climbing.
[0005] To solve the above technical problem, the boarding ladder for being installed on the side of a vehicle of the utility model comprises an upper ladder section, a lower ladder section and a rectangular panel. The upper ladder section has upper mounting plates on the left and right sides, and the upper mounting plates on the left and right sides are fixed on the rectangular panel. Vertical limiting plates perpendicular to the mounting plates are respectively fixed on the rear sides of the upper parts of the two sides of the upper mounting plates. A fixed shaft is rotatably installed between the rear sides of the lower parts of the two sides of the upper mounting plates, and both ends of the fixed shaft extend to the outside of the upper mounting plates on both sides. Upper steps are fixedly arranged at intervals from top to bottom between the two sides of the upper mounting plates; the lower ladder section has lower mounting plates on the left and right sides, and lower steps are fixedly arranged at intervals from top to bottom between the two sides of the lower mounting plates. A hinge shaft is installed between the upper ends of the rear parts of the two sides of the lower mounting plates and the lower ends of the front parts of the two sides of the upper mounting plates. Taking this hinge shaft as the rotation axis, after the lower ladder section rotates counterclockwise upwards by 90°, each of the lower steps can just be located above the corresponding upper step.
[0006] When the utility model is installed on the side of a vehicle, an installation space matching the size and shape of the utility model needs to be reserved on the side of the vehicle where the boarding door is located. During installation, both ends of the fixed shaft in the utility model are fixed on the side walls on both sides of the installation space, and baffles corresponding to the limiting plates at the rear side of the upper part of the upper mounting plate are arranged on the side walls on both sides of the installation space to limit the upper ladder after the utility model rotates clockwise by 90°. When the utility model is installed and used, a door handle should be arranged on the rectangular panel. Through the door handle, the whole utility model can be conveniently rotated clockwise by 90°, and then the lower ladder can be rotated clockwise by 90° to be used. Workers can conveniently get on and off the vehicle by using the utility model. After the utility model is used, the lower ladder can be rotated counterclockwise by 90° first, and then the whole utility model can be rotated counterclockwise by 90° to realize the retraction of the utility model, and the utility model is retracted into the installation space on the side of the vehicle.
[0007] As an improvement of the utility model, a liftable support frame is further installed at the bottom of the lowest lower step of the lower ladder.
[0008] Furthermore, the liftable support frame has a support frame plate at the bottom and left and right H-shaped support frames arranged crosswise. The left and right H-shaped support frames respectively have a driving shaft that can rotate at the top and a sliding shaft at the bottom. The middle parts of the left and right H-shaped support frames are cross-connected through a rotatable middle shaft. Both ends of the driving shaft are equipped with rollers; the support frame plate includes a bottom plate and side frames fixed at the front and rear ends of the bottom plate. Longitudinal slots are respectively opened on the left and right sides of each side frame. The sliding shafts at the bottom of the left and right H-shaped support frames are respectively located in the longitudinal slots on the left and right sides. A driving screw is also included. The left and right sides of the driving screw respectively have left-handed threads and right-handed threads. One end of the driving screw is connected with a rocker. The driving screw is sequentially screwed through the driving shafts at the tops of the left and right H-shaped support frames; the cross-section of the lowest lower step of the lower ladder is rectangular. The rectangular lower step has side wall plates on the left and right sides, end wall plates at the front and rear ends, a top wall plate and a bottom wall plate. An opening for the left and right sliding of the left and right H-shaped support frames is opened along the left and right length direction of the bottom wall plate. The driving shafts at the tops of the left and right H-shaped support frames can slide left and right in the sliding channels formed in the front and rear of the rectangular lower step. The end of the driving screw connected with the rocker passes through one of the side wall plates.
[0009] After the liftable support frame is installed on the utility model, it can better adapt to the road conditions around the vehicle, prevent the bottom of the lower ladder from being suspended after the vehicle stops. By rotating the rocker at one end of the driving screw, the height of the support frame can be adjusted, so as to stably support the bottom of the lower ladder, making the use process of the utility model more stable without shaking.
[0010] As a further improvement of the present utility model, anti-slip layers are respectively fixed on the upper surfaces of the upper step and the lower step. After the anti-slip layers are provided, it is more convenient for the staff to go up and down the steps.
[0011] As a further improvement of the present utility model, weight-reducing holes are spacedly arranged on the upper mounting plates on the left and right sides and the lower mounting plates on the left and right sides. After adopting the above technical features, materials can be saved and the production cost of the present utility model can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present utility model will be further described in detail below with reference to the drawings.
[0013] Figure 1 is the front view structural schematic diagram of the boarding ladder for mounting on the side of a vehicle of the present utility model, and the present utility model is in an unfolded state.
[0014] Figure 2 is after removing the liftable support frame Figure 1 .
[0015] Figure 3 is Figure 2 the view from direction A of
[0016] Figure 4 is after being folded Figure 2 .
[0017] Figure 5 is when the lower ladder rotates counterclockwise upward by 90° with the fixed axis as the rotation axis Figure 4 .
[0018] Figure 6 -9 is the state schematic diagram when the liftable support frame of the present utility model is successively unfolded.
[0019] Figure 10 , 11 is the structural state schematic diagram when the liftable support frame is installed on the lower step at the bottom of the lower ladder.
[0020] Figure 12 The top view structural schematic diagram of the lower step at the bottom of the lower ladder in the present utility model.
[0021] Figure 13 is along Figure 12 the sectional view structural schematic diagram of the A-A line in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] First, refer to Figure 1 - Figure 5, the utility model relates to a boarding ladder installed on the side of a vehicle, which is characterized in that: it includes an upper ladder section 10, a lower ladder section 20 and a rectangular panel 30. The upper ladder section has upper mounting plates 11 on the left and right sides, and the upper mounting plates on the left and right sides are fixed on the rectangular panel 30. Vertical limiting plates 12 perpendicular to the mounting plates are respectively fixed on the rear sides of the upper parts of the two side upper mounting plates. A fixed shaft 13 is rotatably installed between the rear sides of the lower parts of the two side upper mounting plates. The two ends of the fixed shaft extend to the outside of the two side upper mounting plates. Upper steps 14 are fixedly arranged at intervals from top to bottom between the two side upper mounting plates; the lower ladder section 20 has lower mounting plates 21 on the left and right sides, and lower steps 22 are fixedly arranged at intervals from top to bottom between the two side lower mounting plates. A hinge shaft 23 is installed between the upper ends of the rear parts of the two side lower mounting plates and the lower ends of the front parts of the two side upper mounting plates 11. Taking this hinge shaft as the rotation axis, after the lower ladder section is turned counterclockwise upwards by 90°, each of the lower steps 22 can just be located above the corresponding upper step 14. A liftable support frame 40 is also installed at the bottom of the lowest lower step 22 of the lower ladder section 20.
[0023] See again Figure 6 - Figure 13 , the liftable support frame 40 has a support frame plate 41 at the bottom and left and right H-shaped support frames 42 arranged in a cross shape. The left and right H-shaped support frames respectively have a drive shaft 401 rotatable at the top and a sliding shaft 402 at the bottom. The middle parts of the left and right H-shaped support frames are cross-connected by a rotatable middle shaft 403, and rollers 404 are installed at both ends of the drive shaft; the support frame plate 41 includes a bottom plate 410 and side frames 411 fixed at the front and rear ends of the bottom plate. Long strip holes 412 are respectively opened on the left and right sides of each side frame. The sliding shafts 402 at the bottoms of the left and right H-shaped support frames are respectively located in the long strip holes 412 on the left and right sides. It also includes a drive screw 43. The left and right sides of the drive screw respectively have a left-handed thread 431 and a right-handed thread 432. One end of the drive screw is connected with a rocker 433. The drive screw sequentially passes through the drive shafts 401 at the tops of the left and right H-shaped support frames in a threaded manner. By rotating the drive screw, the drive shafts at the tops of the left and right H-shaped support frames can approach or move away from each other, and thus the lifting or lowering of the support frame can be driven; the cross-section of the lowest lower step 22 of the lower ladder section 20 is rectangular. The rectangular lower step has side wall plates 221 on the left and right sides, end wall plates 222 at the front and rear ends, a top wall plate 223 and a bottom wall plate 224. An opening 225 for the left and right sliding of the left and right H-shaped support frames is opened along the left and right length direction of the bottom wall plate. The drive shafts 401 at the tops of the left and right H-shaped support frames can slide left and right in a slideway 226 formed in the left and right length direction of the rectangular lower step. The end of the drive screw connected with the rocker 433 passes through one of the side wall plates 221.
[0024] See again Figure 1 -Figure 5 , anti-slip layers 9 are respectively fixed on the upper surfaces of the upper step 14 and the lower step 22. Weight-reducing holes 8 are spacedly provided on the upper mounting plates 11 on the left and right sides and the lower mounting plates 21 on the left and right sides.
[0025] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Any modification or equivalent replacement of the present invention to achieve the same technical effect is within the protection scope of the present invention.
Claims
1. A boarding ladder for installation on the side of a vehicle, characterized in that: It includes an upper ladder (10), a lower ladder (20) and a rectangular panel (30). The upper ladder has upper mounting plates (11) on its left and right sides. The upper mounting plates on the left and right sides are fixed on the rectangular panel (30). Vertical limiting plates (12) perpendicular to the mounting plates are respectively fixed on the upper rear sides of the two sides of the upper mounting plates. A fixed shaft (13) is rotatably installed between the lower rear sides of the two sides of the upper mounting plates. The two ends of the fixed shaft extend to the outside of the two sides of the upper mounting plates. Upper steps (14) are fixedly arranged at intervals from top to bottom between the two sides of the upper mounting plates; the lower ladder (20) has lower mounting plates (21) on its left and right sides. Lower steps (22) are fixedly arranged at intervals from top to bottom between the two sides of the lower mounting plates. A hinge shaft (23) is installed between the upper rear ends of the two sides of the lower mounting plates and the lower front ends of the two sides of the upper mounting plates (11). Taking this hinge shaft as the rotation axis, after the lower ladder is turned counterclockwise upward by 90°, each of the lower steps (22) can just be located above the corresponding upper step (14).
2. The boarding ladder for being mounted on the side of a vehicle according to claim 1, wherein: A liftable support frame (40) is also installed at the bottom of the lowermost lower step (22) of the lower ladder (20).
3. The boarding ladder for mounting on the side of a vehicle according to claim 2, characterized in that: The liftable support frame (40) has a support frame plate (41) at the bottom and left and right H-shaped support frames (42) arranged in a cross shape. The left and right H-shaped support frames respectively have drive shafts (401) that can rotate at the top and sliding shafts (402) at the bottom. The middle parts of the left and right H-shaped support frames are cross-connected by a rotatable middle shaft (403). Rollers (404) are installed at the two ends of the drive shaft; the support frame plate (41) includes a bottom plate (410) and side frames (411) fixed at the front and rear ends of the bottom plate. Long strip holes (412) are respectively opened on the left and right sides of each side frame. The sliding shafts (402) at the bottom of the left and right H-shaped support frames are respectively located in the long strip holes (412) on the left and right sides. It also includes a drive screw (43). The left and right sides of the drive screw respectively have left-handed threads (431) and right-handed threads (432). One end of the drive screw is connected to a rocker (433). The drive screw sequentially passes through the drive shafts (401) at the top of the left and right H-shaped support frames by screwing; the cross section of the lowermost lower step (22) of the lower ladder (20) is rectangular. The rectangular lower step has side wall plates (221) on its left and right sides, end wall plates (222) at the front and rear ends, a top wall plate (223) and a bottom wall plate (224). An opening (225) for the left and right sliding of the left and right H-shaped support frames is opened along the left and right length direction of the bottom wall plate. The drive shafts (401) at the top of the left and right H-shaped support frames can slide left and right in the sliding channels (226) formed in the front and rear of the rectangular lower step. The end of the drive screw connected to the rocker (433) passes through one of the side wall plates (221).
4. The boarding ladder for mounting on the side of a vehicle according to claim 1, characterized in that: Anti-slip layers (9) are respectively fixed on the upper surfaces of the upper steps (14) and the lower steps (22).
5. The boarding ladder for mounting on the side of a vehicle according to claim 1, characterized in that: Weight-reducing holes (8) are arranged at intervals on the upper mounting plates (11) on the left and right sides and the lower mounting plates (21) on the left and right sides.