Folding ladder stand device of harvester
By designing a folding ladder device including the first welded ladder and the second welded ladder, the problem of lack of folding function and inability to form protection in the prior art is solved, and safe folding and effective protection of the ladder are achieved.
Patent Information
- Application Number
- CN202421455787.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The existing harvester ladder device lacks folding function, is prone to falling and damage, and cannot form a protective effect with the surrounding guardrail after being pushed.
A folding ladder device including a first welded ladder and a second welded ladder is designed, and the ladder is folded and pushed up through a nylon guide rail and rocker arm structure. The second welded ladder can rotate about the movable joint pin to form a 180° fold and is fixed by a nylon bayonet and a locking pin.
The ladder is safely folded, reducing the possibility of falling and damage, and forms a protective effect with the surrounding guardrail after being pushed, improving overall safety and convenience of use.
Smart Images
Figure CN222916631U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of agricultural machinery equipment, and particularly relates to a folding ladder device for a harvester. Background Art
[0002] At present, the periphery of the grain tank of a harvester is sealed, and there are orifices on the side of the bottom for unloading grain. There are two states for the upper part, namely having a grain tank cover or being open (without a grain tank cover). Inside the grain tank, there are mostly components such as a grain elevator, a uniformly distributed auger, a grain unloading auger, and other components. Since there are multiple transmission components inside the grain tank, when a failure occurs during the harvesting process, it is necessary to enter the grain tank for maintenance. The grain tank is fixed on the frame platform, and the side wall of the grain tank has a relatively high distance from the bottom of the grain tank. When personnel enter the grain tank, they all need to climb and turn into the grain tank to install and repair the internal components of the grain tank. Therefore, a ladder device needs to be installed. Most of the existing ladder technologies are single ladders with few functions, do not have folding technology, and do not form a protective effect with the surrounding guardrails after being pushed up.
[0003] The information disclosed in this background art section is only intended to enhance the overall understanding of this application and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention
[0004] The purpose of the present invention is to provide a folding ladder device for a harvester, which can be folded to reduce the possibility of falling and form a protective effect with the surrounding guardrails after being pushed up.
[0005] To achieve the above purpose, the present application is implemented by the following technical solutions:
[0006] A folding ladder device for a harvester includes a first welded ladder and a second welded ladder. The first welded ladder and the second welded ladder are connected by a movable joint pin. The first welded ladder is connected to the vehicle frame through a nylon guide rail, and the first welded ladder is fixed by a rocker arm structure. A locking pin is provided on the first welded ladder, and a nylon bayonet is provided on the second welded ladder.
[0007] Optionally, the rocker arm structure includes a left rocker arm, a left rocker arm mounting seat, a right rocker arm, and a right rocker arm mounting seat. The left rocker arm mounting seat and the right rocker arm mounting seat are fixedly installed on the vehicle frame. The axles on the left rocker arm mounting seat and the right rocker arm mounting seat are respectively connected to the left rocker arm and the right rocker arm, and the other ends of the left rocker arm and the right rocker arm are connected to the first welded ladder.
[0008] Optionally, a pair of welding seats are provided on the first welded ladder for welding the left rocker arm and the right rocker arm.
[0009] Optionally, the second welded ladder can rotate 0 - 180° around the movable joint pin.
[0010] Optionally, the left rocker arm mounting seat and the right rocker arm mounting seat have the same structure and include a mounting frame. A limiting plate is provided at the bottom of the mounting frame. Rubber pads are provided at the contact positions between the left rocker arm and the right rocker arm and the left rocker arm mounting seat and the right rocker arm mounting seat.
[0011] Optionally, the nylon bayonet and the locking pin fix the first welded ladder and the second welded ladder when the device is folded. The nylon bayonet and the locking pin are fixed to the first welded ladder by bolts and nuts.
[0012] Optionally, the second welded ladder is connected with a ladder handrail, and the ladder handrail is arranged below the movable joint pin.
[0013] Optionally, when the first welded ladder and the second welded ladder are lowered, the nylon guide rail is clamped at the bent part of the frame guardrail.
[0014] Compared with the prior art, the beneficial effects achieved by the present application are as follows:
[0015] When pushed up, the first welded ladder moves upward along the surrounding guardrail on the frame along with the nylon guide rail. After reaching the angle where the rocker arm structure is locked, the first welded ladder is flush with the surrounding guardrail and also forms a guardrail to play a protective role. When lowered, the first welded ladder moves downward along the surrounding guardrail on the frame along with the nylon guide rail until the rocker arm structure is locked. The second welded ladder freely rotates to the limit point through the movable joint pin, and the first welded ladder and the second welded ladder are horizontally connected. When not in use, the ladder shrinks, reducing the possibility of the ladder falling and being damaged. Description of the Drawings
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0017] Figure 1 It is a schematic structural diagram of a folding ladder device of a harvester of the present invention when lowered;
[0018] Figure 2 It is a front view of a folding ladder device of a harvester of the present invention when pushed up;
[0019] Figure 3 It is a side view of a folding ladder device of a harvester of the present invention when pushed up.
[0020] Explanation of the reference numerals in the drawings:
[0021] 1. Nylon guide rail; 2. First welded ladder; 3. Right rocker arm mounting seat; 4. Right rocker arm; 5. Nylon bayonet; 6. Ladder handrail; 7. Movable joint pin; 8. Second welded ladder; 9. Left rocker arm mounting seat; 10. Left rocker arm; 11. Lock pin; 12. Rubber pad. Detailed implementation manner
[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use.
[0023] Embodiment 1:
[0024] A folding ladder device for a harvester includes a first welded ladder 2 and a second welded ladder 8. The first welded ladder 2 is connected by a movable joint pin 7. The first welded ladder 2 and the second welded ladder are connected to the vehicle frame through a nylon guide rail 1. The first welded ladder 2 is fixed by a rocker arm structure. A lock pin 11 is provided on the first welded ladder 2, and a nylon bayonet 5 is provided on the second welded ladder 8.
[0025] When pushing up, the first welded ladder 2 moves upward along the surrounding guardrail on the vehicle frame along with the nylon guide rail 1. After reaching the angle locked by the rocker arm structure, the first welded ladder 2 is flush with the surrounding guardrail and also forms a guardrail to play a protective role. When lowering, the first welded ladder 2 moves downward along the surrounding guardrail on the vehicle frame along with the nylon guide rail 1 until the rocker arm structure is locked. The second welded ladder 8 freely rotates to the limit point through the movable joint pin 7. The first welded ladder 2 and the second welded ladder 8 are horizontally connected. When not in use, the ladder shrinks, reducing the possibility of the ladder falling and being damaged.
[0026] The rocker arm structure includes a left rocker arm 10, a left rocker arm mounting seat 9, a right rocker arm 4, and a right rocker arm mounting seat 3. The left rocker arm mounting seat 9 and the right rocker arm mounting seat 3 are fixedly installed on the vehicle frame. The axles on the left rocker arm mounting seat 9 and the right rocker arm mounting seat 3 are respectively connected to the left rocker arm 10 and the right rocker arm 4. The other ends of the left rocker arm 10 and the right rocker arm 4 are connected to the first welded ladder 2. Through the left rocker arm mounting seat 9 and the right rocker arm mounting seat 3, and through the engagement of the left rocker arm 10 and the right rocker arm 4 with the left rocker arm 10 seat and the right rocker arm 4 seat respectively, the support of the left rocker arm 10 and the right rocker arm 4 for the first welded ladder 2 is ensured.
[0027] A pair of welding seats are provided on the first welded ladder 2 for welding the left rocker arm 10 and the right rocker arm 4 to ensure the stable connection between the left rocker arm 10 and the right rocker arm 4 and the first welded ladder 2.
[0028] The second welding ladder 8 can rotate 0 - 180° around the movable joint pin 7, ensuring that the second welding ladder 8 can be folded 180° when pushed up.
[0029] The left rocker arm mounting seat 9 and the right rocker arm mounting seat 3 have the same structure and include a mounting frame. A limiting plate is provided at the bottom of the mounting frame. Rubber pads 12 are provided at the contact positions between the left rocker arm 10 and the right rocker arm 4 and the left rocker arm mounting seat 9 and the right rocker arm mounting seat 3. When lowered, the left rocker arm 10 and the right rocker arm 4 fall to the limiting plate of the rocker arm mounting seat and are pressed against the rubber pads 12 to improve the stability of the first welding ladder 2.
[0030] The nylon bayonet 5 and the locking pin 11 fix the first welding ladder 2 and the second welding ladder 8 when the device is folded, ensuring that the first welding ladder 2 and the second welding ladder 8 are firmly installed during the vehicle's movement.
[0031] The nylon guide rail 1 is engaged with the bent part of the vehicle frame guardrail when the first welding ladder 2 and the second welding ladder 8 are lowered, preventing the first welding ladder 2 and the second welding ladder 8 from shaking when someone climbs on them and improving the safety of the entire ladder.
[0032] Embodiment 2:
[0033] Based on Embodiment 1, an implementation manner of the ladder is provided.
[0034] Different from Embodiment 1, the second welding ladder 8 is connected with a ladder handrail 6, and the ladder handrail 6 is arranged below the movable joint pin 7.
[0035] Pushing the second welding ladder 8 through the ladder handrail 6 reduces the possibility of pinching the hand when directly pushing the second welding ladder 8 up.
[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only used to explain the relative positional relationship and movement conditions between the components in a certain specific posture. If this specific posture changes, the directional indication will also change accordingly. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0037] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.
[0038] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present application.
Claims
1. A folding ladder device for a harvester, characterized in that: It includes a first welded ladder and a second welded ladder, the first welded ladder and the second welded ladder are connected by a movable joint pin, the first welded ladder is connected to the frame by a nylon guide rail, the first welded ladder is fixed by a rocker arm structure, the first welded ladder is provided with a locking pin, and the second welded ladder is provided with a nylon bayonet.
2. The harvester folding ladder device according to claim 1, characterized in that: The rocker arm structure includes a left rocker arm, a left rocker arm mounting seat, a right rocker arm and a right rocker arm mounting seat. The left rocker arm mounting seat and the right rocker arm mounting seat are fixedly mounted on the frame. The shaft heads on the left rocker arm mounting seat and the right rocker arm mounting seat are respectively connected to the left rocker arm and the right rocker arm. The other ends of the left rocker arm and the right rocker arm are connected to the first welded ladder.
3. The harvester folding ladder device according to claim 2, characterized in that: A pair of welding seats are provided on the first welding ladder for welding the left rocker arm and the right rocker arm.
4. The harvester folding ladder device according to claim 1, characterized in that: The second welded ladder can rotate 0 to 180 degrees around the movable joint pin.
5. The harvester folding ladder device according to claim 2, characterized in that: The left rocker arm mounting seat and the right rocker arm mounting seat have the same structure and include a mounting frame, a limiting plate is arranged at the bottom of the mounting frame, and rubber pads are arranged at the contact points between the left rocker arm and the right rocker arm and the left rocker arm mounting seat and the right rocker arm mounting seat.
6. The harvester folding ladder device according to claim 1, characterized in that: The nylon bayonet and the locking pin fix the first welded ladder and the second welded ladder when the device is folded, and the nylon bayonet and the locking pin are fixed to the first welded ladder through bolts and nuts.
7. The harvester folding ladder device according to claim 1, characterized in that: The second welded ladder is connected with a ladder handrail, and the ladder handrail is arranged below the movable joint pin.
8. The harvester folding ladder device according to claim 1, characterized in that: The nylon guide rail is engaged at the bending position of the vehicle frame guardrail when the first welded ladder and the second welded ladder are lowered.