Boarding ladder capable of automatically folding pedals
By designing an automatic retractable ladder with a retraction mechanism, the problem of the pedals not being able to retract automatically in existing technologies is solved, thus improving the safety and efficiency of corn harvester operations.
Patent Information
- Application Number
- CN202423124842.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The existing loading ladder steps cannot be automatically retracted, which makes it easy for the corn harvester to collide with hard objects and damage or scratch the crops during operation, taking up space and affecting operating efficiency.
An automatic retractable boarding ladder was designed. The automatic retraction of the boarding steps is achieved through a retraction mechanism. The ladder includes a mounting frame, a ladder frame, a retraction mechanism, connecting components, and tension springs. The cooperation of the tension springs and connecting components enables the boarding steps to retract automatically without external force.
It effectively prevents the pedals from being damaged or scratching crops during corn harvesting operations due to forgetting to retract them, reduces space occupation, and improves operational safety and efficiency.
Smart Images
Figure CN223508183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of boarding stairs technology, and more specifically, to a boarding stairs with automatically retractable steps. Background Technology
[0002] A corn harvester is an agricultural implement that uses machinery to complete multiple operations such as ear picking, stacking, and stalk return to the field in one go when corn is mature. The process mainly includes: using the corn harvester to pick ears while the corn is growing; under the action of the ear picking roller and ear picking plate, the ear stalk is broken off; due to the height difference between the inner and outer ear picking rollers, the ears fall into the ear box; after the ear box is full, the ears are opened and stacked; a high-speed rotating cutter cuts the stalks from the root and then enters the crushing mechanism to be chopped into 3-5 cm long pieces; after chopping, the stalks fall to the ground naturally. In order to provide the driver with a better view, the cab is located in a high position and is accessed by using a ladder.
[0003] However, in existing technologies, the upper ladder is usually fixed, or the pedals need to be manually closed. However, during the operation of corn harvesters, operators often forget to close the upper ladder, which causes the pedals to collide with hard objects and be damaged, or the upper ladder to scratch the crops. Therefore, the upper ladder pedals need to be retracted to reduce space occupation, but the current upper ladders are all fixed and cannot be retracted. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a boarding ladder with automatically retractable steps that overcomes or at least partially solves the above technical problems, allowing the boarding steps to automatically retract inward to reduce space occupation.
[0005] This utility model is implemented as follows:
[0006] This utility model provides an automatic retractable boarding ladder, including a mounting frame and a ladder frame. The ladder frame is mounted on the front of the mounting frame. A first step is provided on the front side of the bottom of the mounting frame. A second step is provided on the front of the ladder frame, and multiple sets of the second step are provided. The outer side of the second step is rotatably connected to the inner side of the ladder frame through a connecting shaft.
[0007] The recycling facility includes;
[0008] The first mounting rod is mounted on the side of the ladder frame;
[0009] The second mounting rod is disposed on the side of the mounting bracket;
[0010] A tension spring, one end of which is engaged with a first mounting rod, and the other end of which is engaged with a second mounting rod.
[0011] In a preferred embodiment, the recycling mechanism further includes a connecting assembly comprising a mounting base mounted on top of a mounting frame, a rotating shaft mounted on top of the mounting base and connected to a first pedal, a connecting plate mounted on the outer side of the rotating shaft, and a second mounting rod mounted on the outer side of the connecting plate.
[0012] In a preferred embodiment, a support rod is mounted on the bottom of the mounting bracket, and the support rod is located at the bottom of the first pedal.
[0013] In a preferred embodiment, a handle is installed at the bottom of the first pedal, and the handle is U-shaped.
[0014] In a preferred embodiment, a first movable shaft is mounted on both sides of the first pedal, and a first extension plate is mounted on the surface of the first movable shaft.
[0015] In a preferred embodiment, a second movable shaft is installed on both sides of the second pedal, and a second extension plate is rotatably mounted on the surface of the second movable shaft, and the bottom of the first extension plate is installed on both sides of the second pedal via the second movable shaft.
[0016] The automatic retractable step ladder provided by this utility model has the following advantages:
[0017] 1. By setting up a recycling mechanism, the first and second pedals can be pulled and rotated, preventing operators from forgetting to retract the ladder during corn harvesting. The ladder pedals can automatically retract to reduce space occupation.
[0018] 2. By setting a support rod and a handle, the first pedal can be rotated when the handle is pulled, which makes it easier to unfold the first and second pedals for stepping on. The support rod supports the first pedal, which helps to prevent the first pedal from flipping over when it is stepped on, thus preventing it from failing to provide effective support to the user. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model.
[0021] Figure 2Provided for the embodiments of this utility model Figure 1 Enlarged three-dimensional cross-sectional structure diagram at point A.
[0022] In the diagram: 1. Mounting bracket; 2. Ladder frame; 3. First step; 4. Second step; 5. First mounting rod; 6. Second mounting rod; 7. Tension spring; 8. Mounting base; 9. Rotating shaft; 10. Connecting plate; 11. Support rod; 12. Pull handle; 13. First movable shaft; 14. First extension plate; 15. Second movable shaft; 16. Second extension plate. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on 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.
[0024] Reference Figures 1-2 This utility model provides a technical solution: an automatic retractable ladder, including a mounting frame 1, a ladder frame 2, and a recycling mechanism. The ladder frame 2 is installed on the front of the mounting frame 1. A first step 3 is provided on the front side of the bottom of the mounting frame 1, and a second step 4 is provided on the front of the ladder frame 2. Multiple sets of second steps 4 are provided. The outer side of the second step 4 is rotatably connected to the inner side of the ladder frame 2 through a connecting shaft, which enables the mounting frame 1 and the ladder frame 2 to install the first step 3 and the second step 4. The recycling mechanism can pull the first step 3 and the second step 4, thereby rotating the first step 3 and the second step 4, preventing the operator from forgetting to retract the ladder during corn harvesting operations, which could cause the ladder to collide with hard objects and be damaged.
[0025] Reference Figures 1-2In a preferred embodiment, a recycling mechanism is provided, comprising a first mounting rod 5, a second mounting rod 6, and a tension spring 7. The first mounting rod 5 is mounted on the side of the ladder frame 2, and the second mounting rod 6 is disposed on the side of the mounting frame 1. One end of the tension spring 7 is engaged with the first mounting rod 5, and the other end of the tension spring 7 is engaged with the second mounting rod 6. The recycling mechanism also includes a connecting assembly, comprising a mounting base 8, which is mounted on the top of the mounting frame 1. A rotating shaft 9 is mounted on the top of the mounting base 8 and is connected to the first pedal 3. The outer side of the rotating shaft 9... A connecting plate 10 is installed, and a second mounting rod 6 is installed on the outside of the connecting plate 10. This allows the mounting base 8 to be installed on the rotating shaft 9, which in turn installs the first pedal 3. After the second mounting rod 6 is installed, a tension spring 7 can be installed, which pulls the first mounting rod 5. This causes the first mounting rod 5 to drive the rotating shaft 9 to rotate through the connecting plate 10, thus facilitating the rotation of the first pedal 3 by the rotating shaft 9. This allows the first pedal 3 and the second pedal 4 to be pulled and retracted under the force of the tension spring 7 without any external force.
[0026] Reference Figure 1 In a preferred embodiment, a handle 12 is installed at the bottom of the first pedal 3, and the handle 12 is U-shaped. When in use, the first pedal 3 can be pulled to a horizontal position by pulling the handle 12, which facilitates the stepping on of the first pedal 3 and the second pedal 4. A support rod 11 is installed at the bottom of the mounting frame 1. The support rod 11 is located at the bottom of the first pedal 3, which can support the first pedal 3 after the support rod 11 is installed, thereby preventing the first pedal 3 from failing to support the user when stepping on it.
[0027] Reference Figure 1 In a preferred embodiment, a first movable shaft 13 is installed on both sides of the first pedal 3, and a first extension plate 14 is installed on the surface of the first movable shaft 13. A second movable shaft 15 is installed on both sides of the second pedal 4, and a second extension plate 16 is rotatably installed on the surface of the second movable shaft 15. The bottom of the first extension plate 14 is installed on both sides of the second pedal 4 through the second movable shaft 15. This allows the first extension plate 14 to be installed after the first movable shaft 13 is installed, and the bottom of the first extension plate 14 to be installed after the second extension plate 16 is installed through the second movable shaft 15. This facilitates the second pedal 4 to unfold through the first extension plate 14 and the second extension plate 16 when the first pedal 3 is pulled, thereby facilitating the stepping on of the second pedal 4 and the first pedal 3.
[0028] Specifically, the working process or principle of this automatic retractable boarding ladder is as follows: When it is necessary to use the boarding ladder to board the vehicle, the handle 12 is pulled, causing the handle 12 to drive the first pedal 3 to rotate. When the first pedal 3 rotates, it will drive the first extension plate 14 to move, so that the first extension plate 14 pushes the second pedal 4 by squeezing the second movable shaft 15, and squeezes and rotates multiple sets of second pedals 4 through the second extension plate 16, thereby facilitating the stepping on the second pedals 4. After boarding or alighting, the first pedal 3 and the second pedal 4 lose the external force, so the tension spring 7 pulls the second mounting rod 6, so that the second mounting rod 6 drives the first pedal 3 to rotate upward through the connecting plate 10 and the rotating shaft 9, thereby facilitating the retraction of the first pedal 3 and the second pedal 4. The boarding ladder can automatically retract to reduce space occupation, avoid the extended boarding ladder from colliding with hard objects and causing damage, and also avoid the boarding ladder from scratching crops and causing crops to tip over, thus affecting the harvesting of crops.
Claims
1. A boarding ladder with automatically retractable steps, comprising a mounting frame (1) and a ladder frame (2), characterized in that; The ladder frame (2) is installed on the front of the mounting frame (1). The front side of the bottom of the mounting frame (1) is provided with a first step (3). The front side of the ladder frame (2) is provided with a second step (4). There are multiple sets of the second step (4). The outer side of the second step (4) is rotatably connected to the inner side of the ladder frame (2) through a connecting shaft. The recycling facility includes; The first mounting rod (5) is mounted on the side of the ladder frame (2); The second mounting rod (6) is disposed on the side of the mounting bracket (1); A tension spring (7) is provided, one end of which is engaged with the first mounting rod (5), and the other end of which is engaged with the second mounting rod (6).
2. The automatic retractable boarding ladder according to claim 1, characterized in that, The recycling mechanism also includes a connecting assembly, which includes a mounting base (8) mounted on the top of the mounting frame (1). A rotating shaft (9) is mounted on the top of the mounting base (8) and is connected to the first pedal (3). A connecting plate (10) is mounted on the outside of the rotating shaft (9), and the second mounting rod (6) is mounted on the outside of the connecting plate (10).
3. The automatic retractable boarding ladder according to claim 1, characterized in that, A support rod (11) is installed at the bottom of the mounting bracket (1), and the support rod (11) is located at the bottom of the first pedal (3).
4. The automatic retractable boarding ladder according to claim 1, characterized in that, The bottom of the first pedal (3) is equipped with a pull handle (12), and the pull handle (12) is U-shaped.
5. A boarding ladder with automatically retractable steps according to any one of claims 1 to 4, characterized in that, The first pedal (3) has a first movable shaft (13) installed on both sides, and a first extension plate (14) is installed on the surface of the first movable shaft (13).
6. A boarding ladder with automatically retractable steps according to claim 5, characterized in that, The second pedal (4) is equipped with a second movable shaft (15) on both sides, and a second extension plate (16) is rotatably mounted on the surface of the second movable shaft (15), and the bottom of the first extension plate (14) is mounted on both sides of the second pedal (4) through the second movable shaft (15).