Agricultural mobile feed bin ladder
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-08-14
AI Technical Summary
为了方便检查料仓内储料情况，在料仓外侧都设有攀梯，攀梯下端低一些，人员攀爬起步就容易一些，但是，如果梯子下端过低，拖拉机牵引料仓机组移动时，因在田间移动行走，地势起伏变化，梯子下端经常触及地面，使攀梯随料仓移动过程中遇到障碍受阻，轻则造成攀梯变形损坏，重则连带料仓受损变形，可靠性、适用性存在问题
本实用新型包括副梯，副梯的两个侧梁与主梯的两个侧梁下端铰接并构成同轴心的左右两个铰接点，该副梯以所述两个铰接点为轴心杠杆式摆动，副梯的两个侧梁上端分别设置卡板，卡板设有豁口，当副梯的两个侧梁下端向下方杠杆式摆动至极限位置时，该卡板的豁口卡装在主梯的两个侧梁上，定位座设置在副梯上，定位座上设有定位孔，定位轴设置在主梯上，当副梯的两个侧梁下端向上方杠杆式摆动至极限位置时，该副梯的两个侧梁收起并与主梯平行，该定位轴插入该定位座的定位孔内，该定位轴外端插上锁销，使该副梯收起锁定。这样拖拉机牵引料仓机组田间移动时，副梯保持收起状态，即使遇到地势起伏变化，梯子下端与地面保持距离，避免了攀梯随料仓移动过程中遇到障碍受阻，造成攀梯变形损坏的情况。所以，得到了适用性强、可靠性高的效果。
Smart Images
Figure CN224634541U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a silo ladder, and more particularly to a mobile agricultural silo ladder. Background Technology
[0002] Mobile agricultural silos are mounted on chassis with ground wheels and are typically towed by a tractor to transport materials. To facilitate inspection of the silo's contents, ladders are installed on the outside. The lower end of the ladder makes it easier for personnel to climb and start. However, if the lower end is too low, the ladder's lower end frequently touches the ground as the tractor moves across the field, causing it to encounter obstacles and become obstructed. This can lead to ladder deformation or even damage to the silo itself, compromising its reliability and usability. Summary of the Invention
[0003] The purpose of this utility model is to address the aforementioned problems by providing a mobile agricultural silo ladder that is highly applicable and reliable.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: The agricultural mobile hopper ladder of this utility model includes a fixed base and a main ladder mounted on the fixed base, as well as an auxiliary ladder, a positioning shaft, a positioning seat, a bracket, a locking plate, and a locking pin. Supports are provided at the front ends of both side walls of the bracket. The lower ends of the two side beams of the main ladder are supported on these supports. The two side beams of the auxiliary ladder are hinged to the lower ends of the two side beams of the main ladder, forming two coaxial left and right hinge points. The auxiliary ladder swings in a lever-like manner around these two hinge points. Each beam has a locking plate with a notch. When the lower ends of the two side beams of the auxiliary ladder swing downwards to their limit position, the notch of the locking plate engages with the two side beams of the main ladder. A positioning seat is installed on the auxiliary ladder, and the positioning seat has a positioning hole. A positioning shaft is installed on the main ladder. When the lower ends of the two side beams of the auxiliary ladder swing upwards to their limit position, the two side beams of the auxiliary ladder retract and become parallel to the main ladder. The positioning shaft is inserted into the positioning hole of the positioning seat, and a locking pin is inserted into the outer end of the positioning shaft to retract and lock the auxiliary ladder.
[0005] As a preferred embodiment of this utility model, the two side beams of the main ladder are respectively provided with support sleeves at their lower ends along the transverse direction. The two support sleeves are coaxial, and the inner and outer ends of the support sleeves are respectively fitted with inner bushings and outer bushings along the coaxial line, and are fixed by fastening bolts passing through them in sequence. The front end supports of the two side walls of the bracket are fitted onto the two inner bushings. The two side beams of the auxiliary ladder are U-shaped bent plates, and each side beam has two symmetrical sleeves on its U-shaped bent plate. The two sleeves are respectively hinged to the inner bushing and the outer bushing.
[0006] As a preferred embodiment of this utility model, handles are symmetrically arranged on the outer sides of the two side beams of the auxiliary ladder.
[0007] By adopting the above technical solution, the agricultural mobile feed hopper ladder provided by this utility model has the following advantages compared with the prior art: This utility model includes a secondary ladder. The two side beams of the secondary ladder are hinged to the lower ends of the two side beams of the main ladder, forming two coaxial hinge points. The secondary ladder swings in a lever-like manner around these two hinge points. Each of the two side beams of the secondary ladder has a locking plate with a notch at its upper end. When the lower ends of the two side beams of the secondary ladder swing downwards to their limit position, the notches of the locking plates engage with the two side beams of the main ladder. A positioning seat is located on the secondary ladder, and the positioning seat has a positioning hole. A positioning shaft is located on the main ladder. When the lower ends of the two side beams of the secondary ladder swing upwards to their limit position, the two side beams of the secondary ladder retract and become parallel to the main ladder. The positioning shaft is inserted into the positioning hole of the positioning seat, and a locking pin is inserted into the outer end of the positioning shaft to lock the secondary ladder in place. In this way, when a tractor pulls a hopper unit to move in the field, the secondary ladder remains in a retracted state. Even when encountering changes in terrain, the lower end of the ladder maintains a distance from the ground, preventing the ladder from being obstructed by obstacles during the movement of the hopper and causing deformation or damage. Therefore, it achieved the effect of strong applicability and high reliability. Attached Figure Description
[0008] Figure 1 This is a front view of the structure of the mobile agricultural silo ladder of this utility model; Figure 2 yes Figure 1 Side view; Figure 3 yes Figure 2 A sectional view along line AA. Figure 4 yes Figure 2 Sectional view along line BB; Figure 5 This is a schematic diagram of the folded state of the mobile agricultural silo ladder of this utility model; Figure 6 yes Figure 5 A magnified view of part I.
[0009] In the diagram: 1. Fixed base; 2. Main ladder; 3. Secondary ladder; 4. Positioning shaft; 5. Positioning seat; 6. Bracket; 7. Handle; 8. Clamping plate; 9. Support sleeve; 10. Outer bushing; 11. Inner bushing; 12. Fastening bolt; 13. Locking pin. Detailed Implementation
[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6The diagram shows a preferred embodiment of the mobile agricultural silo ladder of this utility model. It includes a fixed base 1 and a main ladder 2 mounted on the fixed base 1, as well as a secondary ladder 3, a positioning shaft 4, a positioning seat 5, a support 6, a locking plate 8, and a locking pin 13. Supports are provided at the front ends of both side walls of the support 6. The lower ends of the two side beams of the main ladder 2 are supported on these supports. The two side beams of the secondary ladder 3 are hinged to the lower ends of the two side beams of the main ladder 2, forming two coaxial left and right hinge points. The secondary ladder 3 swings in a lever-like manner around these two hinge points. The upper ends of the two side beams of the secondary ladder 3 are... The card plate 8 is not provided. The card plate 8 has a notch. When the lower ends of the two side beams of the auxiliary ladder 3 swing downwards to the limit position, the notch of the card plate 8 is engaged with the two side beams of the main ladder 2. The positioning seat 5 is provided on the auxiliary ladder 3. The positioning seat 5 has a positioning hole. The positioning shaft 4 is provided on the main ladder 2. When the lower ends of the two side beams of the auxiliary ladder 3 swing upwards to the limit position, the two side beams of the auxiliary ladder 3 are retracted and parallel to the main ladder 2. The positioning shaft 4 is inserted into the positioning hole of the positioning seat 5. The outer end of the positioning shaft 4 is inserted with a locking pin 13, so that the auxiliary ladder 3 is retracted and locked.
[0011] As a preferred embodiment of this utility model, such as Figure 3 As shown, the two side beams of the main ladder 2 are respectively provided with support sleeves 9 along the horizontal direction at their lower ends. The two support sleeves 9 are coaxial. The inner and outer ends of the support sleeves 9 are respectively fitted with inner bushings 11 and outer bushings 10 along the coaxial line, and are fixed by fastening bolts 12 passing through them in sequence. The front supports of the two side walls of the bracket 6 are fitted on the two inner bushings 11. The two side beams of the auxiliary ladder 3 are U-shaped bent plates. Each side beam has two symmetrical sleeves on its U-shaped bent plate. The two sleeves are respectively hinged to the inner bushings 11 and the outer bushings 10.
[0012] As a preferred embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 4 As shown, handles 7 are symmetrically arranged on the outer sides of the two side beams of the auxiliary ladder 3.
[0013] This utility model is installed on an agricultural feed silo. The fixed base 1 is fixedly installed on the upper part of the side wall of the agricultural feed silo, and the rear ends of the two side walls of the bracket 6 are fixedly installed on the lower frame of the agricultural feed silo. The entire climbing ladder is then installed. When it is necessary to climb the ladder to inspect the contents of the silo, pull out the locking pin 13 at the outer end of the positioning shaft 4. Manually operate the handle 7 to make the auxiliary ladder 3 swing around the two hinge points as a lever. The clamping plates 8 at the upper ends of the two side beams of the auxiliary ladder 3 have notches. When the lower ends of the two side beams of the auxiliary ladder 3 swing downwards to their limit, the notches of the clamping plates 8 engage with the two side beams of the main ladder 2. The auxiliary ladder 3 then swings downwards and unfolds, lowering its height for easy climbing. When a tractor pulls the agricultural silo across the field, manually operate the handle 7 to make the auxiliary ladder 3 swing around the two hinge points as a lever. When the lower ends of the two side beams of the auxiliary ladder 3 swing upwards to their limit, the two side beams of the auxiliary ladder 3 retract and become parallel to the main ladder 2. The positioning shaft 4 is inserted into the positioning hole of the positioning seat 5, and the locking pin 13 is inserted at the outer end of the positioning shaft 4, locking the auxiliary ladder 3 in place. This increases the ladder's ground clearance, facilitating safe movement and improving applicability, reliability, and ease of use.
[0014] This utility model is applicable to the installation and use of various agricultural mobile silos.
Claims
1. An agricultural mobile bin ladder comprising a fixed seat (1) and a main ladder (2) arranged on the fixed seat (1), characterized in that: It also includes a secondary ladder (3), a positioning shaft (4), a positioning seat (5), a bracket (6), a locking plate (8), and a locking pin (13). The front ends of the two side walls of the bracket (6) are provided with supports, and the lower ends of the two side beams of the main ladder (2) are supported on the supports. The two side beams of the secondary ladder (3) are hinged to the lower ends of the two side beams of the main ladder (2) and form two coaxial left and right hinge points. The secondary ladder (3) swings in a lever-like manner with the two hinge points as the axis. The upper ends of the two side beams of the secondary ladder (3) are respectively provided with locking plates (8). The locking plates (8) are provided with notches. When the lower ends of the two side beams of the secondary ladder (3) are... When the lever swings downward to the limit position, the notch of the card plate (8) is engaged with the two side beams of the main ladder (2). The positioning seat (5) is set on the auxiliary ladder (3). The positioning seat (5) has a positioning hole. The positioning shaft (4) is set on the main ladder (2). When the lower ends of the two side beams of the auxiliary ladder (3) swing upward to the limit position, the two side beams of the auxiliary ladder (3) retract and become parallel to the main ladder (2). The positioning shaft (4) is inserted into the positioning hole of the positioning seat (5). The outer end of the positioning shaft (4) is inserted with a locking pin (13) to retract and lock the auxiliary ladder (3).
2. The agricultural mobile bin ladder of claim 1, wherein: The two side beams of the main ladder (2) are respectively provided with support sleeves (9) along the horizontal direction at the lower end of the two side beams. The two support sleeves (9) are coaxial. The inner and outer ends of the support sleeves (9) are respectively fitted with inner bushings (11) and outer bushings (10) along the coaxial line, and are fixed by fastening bolts (12) passing through them in sequence. The front end supports of the two side walls of the bracket (6) are fitted on the two inner bushings (11). The two side beams of the auxiliary ladder (3) are U-shaped bent plates. Each side beam has two symmetrical sleeves on the U-shaped bent plate. The two sleeves are respectively hinged to the inner bushings (11) and the outer bushings (10).
3. The agricultural mobile bin ladder of claim 1 or 2, wherein: Handles (7) are symmetrically arranged on the outer sides of the two side beams of the auxiliary ladder (3).