Boarding ladder assembly and spraying machine

Abstract

The boarding ladder assembly comprises a boarding platform, a boarding ladder and a telescopic driving part, the boarding platform is horizontally arranged, one end of the boarding ladder is rotationally connected with the front side of the boarding platform, the telescopic driving part is rotationally installed on the boarding platform, and the boarding ladder is arranged on the boarding platform. The telescopic end of the telescopic driving part is rotationally connected with the middle of the boarding ladder, the telescopic driving part stretches out and draws back to drive the boarding ladder to swing up and down to fall down or tilt up, and a fixed handrail is vertically arranged at the position, located on one side of the boarding ladder, of the front end of the boarding platform. A follow-up handrail is arranged in the middle of the side, away from the fixed handrail, of the front end of the boarding ladder in the length direction of the boarding ladder, and the boarding ladder is simple in structure, good in safety and good in trafficability.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and in particular relates to a vehicle ladder assembly and a sprayer. Background Art

[0002] For a sprayer, it needs to have a high ground clearance, but this also leads to a high chassis height, and the operator needs to use a ladder when getting on and off the vehicle, but the vertically arranged ladder will damage the crops during the operation of the sprayer. Although there are ladders that can be installed in a retractable manner, their structures are relatively complicated. For example, the document No. CN221457493U "A sprayer ladder structure and sprayer" and the document No. CN221457490U "A self-propelled spray boom sprayer rotatable ladder and sprayer" have no handrails or only one side of the ladder, which makes the safety of the ladder still deviated. However, if handrails are directly provided on both sides of the ladder, it will make it difficult for operators with overweight bodies to pass. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a vehicle ladder assembly with a simple structure and good safety.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a boarding ladder assembly, comprising a boarding platform, a boarding ladder and a telescopic drive member, the boarding platform is horizontally arranged, one end of the boarding ladder is rotatably connected to the front side of the boarding platform, the telescopic drive member is rotatably mounted on the boarding platform, the telescopic end of the telescopic drive member is rotatably connected to the middle part of the boarding ladder, the telescopic drive member is telescopic to drive the boarding ladder to swing up and down to fall or tilt up, the front end of the boarding platform is located on one side of the boarding ladder and a fixed handrail is vertically arranged, and the front end of the boarding ladder is away from the middle of the side of the fixed handrail along the length direction of the boarding ladder.

[0005] The beneficial effect of the above technical solution is that: by arranging the follower handrail and the fixed handrail, the follower handrail and the fixed handrail can protect the operator from both sides of the boarding ladder, and can also serve as handrails for the operator when getting on the vehicle. In addition, the fixed handrail is installed on the boarding platform, and the follower handrail is arranged on the upper vehicle body, so that the distance between the fixed handrail and the follower handrail in the left and right directions can be greater than the width of the boarding ladder, thereby meeting the needs of fatter people to pass through. In addition, the follower handrail is only set on one side of the boarding ladder, so that the boarding ladder is less affected by obstacles during the upward tilting process.

[0006] When the boarding ladder in the above technical solution falls, the upper end of the fixed handrail is higher than the upper end of the movable handrail, and the lower end of the movable handrail is lower than the lower end of the fixed handrail.

[0007] The beneficial effect of the above technical solution is that the fixed handrail and the movable handrail are staggered in the vertical direction, so that the operator has better accessibility on the vehicle ladder.

[0008] The telescopic driving member in the above technical solution is a hydraulic cylinder, which extends to drive the vehicle ladder to rotate to a horizontal position to be in a storage state, or contracts to drive the vehicle ladder to rotate downward to fall.

[0009] The beneficial effects of the above technical solution are: its structure is simple and its operation stability is good.

[0010] In the above technical solution, the boarding ladder and the boarding platform are rotatably connected via a rotating shaft, and the boarding platform and the boarding ladder are both detachably connected to the rotating shaft.

[0011] The beneficial effect of the above technical solution is that the rotating shaft is used as a transition between the vehicle boarding ladder and the vehicle boarding platform, and both are connected to the rotating shaft in a detachable manner, so that the vehicle boarding ladder can be flexibly disassembled and assembled on the vehicle boarding platform, thereby facilitating the maintenance of the vehicle boarding ladder assembly.

[0012] In the above technical solution, two outer sleeves aligned with each other are provided on the left and right sides of the front end of the boarding platform, and an inner sleeve is provided on the upper end of the boarding ladder along the left and right directions. The inner sleeve is located between the two outer sleeves, and the inner sleeve and the two outer sleeves are inserted into the rotating shaft when they are aligned with each other. A limit member is provided on the inner sleeve or any one of the outer sleeves to limit the left and right movement of the rotating shaft.

[0013] The beneficial effect of the above technical solution is that after removing the limit piece, the rotating shaft can be pulled out and the boarding ladder can be separated from the boarding platform. Conversely, the boarding ladder can be rotated and installed on the boarding platform, and its operational flexibility is good.

[0014] In the above technical solution, the inner sleeve is provided with a first pin hole that penetrates the inner sleeve in the radial direction, and the rotating shaft is provided with a second pin hole that is aligned with the first pin hole. After the first pin hole is aligned with the second pin hole, the limiting member is inserted to limit the rotating shaft left and right relative to the inner sleeve.

[0015] The beneficial effect of the above technical solution is that the inner sleeve and the rotating shaft are limited by the limiting member in a pin-connected manner, which makes the limiting member more flexible to disassemble and assemble.

[0016] The limiting member in the above technical solution is a latch member, or the limiting member includes a bolt and a nut.

[0017] The beneficial effects of the above technical solution are: its structure is simple and easy to assemble and disassemble.

[0018] In the above technical solution, a limit block is provided at the rear upper end of the boarding ladder protruding backward, and when the boarding ladder is in a dropped state, the rear end of the limit block abuts against the boarding platform to limit the position.

[0019] The beneficial effect of the above technical solution is that when the vehicle ladder falls, its upper end can abut on the vehicle platform through the limit block to limit the position, which makes the process of operators getting on and off the vehicle via the vehicle ladder safer.

[0020] The rear end of the limit block in the above technical solution is provided with a flexible buffer pad.

[0021] The beneficial effect of the above technical solution is that it can avoid the metal collision sound generated when the limit block and the boarding platform abut against each other when the boarding ladder falls.

[0022] A second object of the present invention is to provide a sprayer that is convenient and safe to get on and off.

[0023] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: A sprayer includes the above-mentioned vehicle ladder assembly.

[0024] The beneficial effects of the above technical solution are: its structure is simple, and it is convenient and safe for operators to get on and off the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a vertical view of the vehicle ladder assembly described in Example 1 of the utility model in the lowered state;

[0026] Figure 2 This is a front view of the vehicle ladder assembly in the lowered state described in Example 1 of the present utility model;

[0027] Figure 3 This is a side view of the vehicle ladder assembly in the lowered state described in Example 1 of the present utility model;

[0028] Figure 4 This is a side view of the vehicle ladder assembly in the stowed state described in Example 1 of the present utility model;

[0029] Figure 5 This is a structural diagram of a case where a single inner sleeve is provided in Example 1 of the present utility model;

[0030] Figure 6 This is a structural diagram of a case where two inner sleeves are provided in Example 1 of the present utility model;

[0031] Figure 7 This is a structural diagram of the inner sleeve and the rotating shaft described in Example 1 of the present utility model when they are connected via a limiting member.

[0032] In the figure: 1. Boarding platform; 11. Fixed handrail; 12. Outer sleeve; 13. Lower crossbeam; 2. Boarding ladder; 21. Follow-up handrail; 22. Inner sleeve; 221. First pin hole; 23. Limit block; 231. Flexible buffer pad; 24. Ladder longitudinal beam; 25. Ladder section plate; 3. Telescopic drive member; 4. Rotating shaft; 41. Second pin hole; 5. Limit member; 51. Bolt; 52. Nut. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0034] Example 1

[0035] like Figures 1-4As shown, this embodiment provides a boarding ladder assembly, including a boarding platform 1, a boarding ladder 2 and a telescopic drive member 3. The boarding platform 1 is horizontally arranged, one end of the boarding ladder 2 is rotatably connected to the front side of the boarding platform 1, and the telescopic drive member 3 is rotatably installed on the boarding platform 1. The telescopic end of the telescopic drive member 3 is rotatably connected to the middle part of the boarding ladder 2. The telescopic drive member 3 is telescopic to drive the boarding ladder 2 to swing up and down to fall or tilt up. The front end of the boarding platform 1 is located on one side of the boarding ladder 2 and is vertically provided with a fixed handrail 11. The front end of the boarding ladder 2 is away from the middle of the side of the fixed handrail 11 along the boarding ladder 2 A follower handrail 21 is provided in the length direction of the vehicle. By providing the follower handrail 21 and the fixed handrail 11, the follower handrail 21 and the fixed handrail 11 can protect the operator from both sides of the vehicle ladder 2, and can also serve as handrails for the operator when getting on the vehicle. In addition, the fixed handrail 11 is installed on the vehicle platform 1, and the follower handrail 21 is provided on the upper vehicle body, so that the distance between the fixed handrail 11 and the follower handrail 21 in the left and right directions can be greater than the width of the vehicle ladder, thereby meeting the needs of fatter people to pass through. In addition, the follower handrail 21 is only provided on one side of the vehicle ladder 2, so that the vehicle ladder 2 is less affected by obstacles during the upward tilting process.

[0036] When the boarding ladder is in the lowered state, the lower end of the fixed handrail is close to the upper end of the movable handrail, the height of the lower end of the fixed handrail is slightly lower than the height of the lower end of the boarding platform, and the height of the upper end of the fixed handrail is higher than the height of the upper end of the boarding platform. In this way, when the boarding ladder is lowered, the fixed handrail and the movable handrail are vertically staggered. At this time, the operator can first hold the movable handrail to climb the ladder, and then hold the fixed handrail to step onto the boarding platform.

[0037] The boarding ladder includes two ladder longitudinal beams 24 and ladder step plates 25. Two ladder longitudinal beams 24 are provided, and the two ladder longitudinal beams 24 are parallel to each other and spaced apart. Multiple ladder step plates 25 are provided, and the multiple ladder step plates 25 are horizontally arranged between the two ladder longitudinal beams 24. Multiple ladder step plates 25 are spaced apart along the length of the ladder longitudinal beams 24 between the two ladder longitudinal beams 24. The two ends of each ladder step plate 25 are vertically connected to the two ladder longitudinal beams 24. In this embodiment, the upper ends of the two ladder longitudinal beams 24 are rotatably connected to the front side of the boarding platform 1, and the follower handrail is provided on one of the ladder longitudinal beams 24.

[0038] When the boarding ladder 2 in the above technical solution falls, the upper end of the fixed handrail 11 is higher than the upper end of the movable handrail 21, and the lower end of the movable handrail 21 is lower than the lower end of the fixed handrail 11, so that the fixed handrail 11 and the movable handrail 21 are staggered in the vertical direction, so that the operator has better passability on the boarding ladder 2.

[0039] The telescopic driving member 3 in the above technical solution is a hydraulic cylinder. The telescopic driving member 3 extends to drive the boarding ladder 2 to rotate to a horizontal position to be in a storage state, or the telescopic driving member 3 contracts to drive the boarding ladder 2 to rotate downward to fall. It has a simple structure and good operating stability.

[0040] In the above technical solution, the boarding ladder 2 is rotatably connected to the boarding platform 1 through a rotating shaft 4, and the boarding platform 1 and the boarding ladder 2 are both detachably connected to the rotating shaft 4, so that the rotating shaft serves as a transition between the boarding ladder and the boarding platform, and both are detachably connected to the rotating shaft, so that the boarding ladder can be flexibly disassembled and assembled on the boarding platform to facilitate the maintenance of the boarding ladder assembly.

[0041] like Figure 5 and Figure 7 As shown, in the above technical solution, two mutually aligned outer sleeves 12 are provided on the left and right sides of the front end of the boarding platform 1, and an inner sleeve 22 is provided on the upper end of the boarding ladder 2 along the left and right directions. The inner sleeve 22 is located between the two outer sleeves 12, and the inner sleeve 22 and the two outer sleeves 12 are inserted into the rotating shaft 4 when they are aligned with each other. The inner sleeve 22 or any one of the outer sleeves 12 is provided with a limit member 5 for limiting the left and right movement of the rotating shaft 4. In this way, after removing the limit member, the rotating shaft can be pulled out, and the boarding ladder can be separated from the boarding platform. Conversely, the boarding ladder can be rotatably installed on the boarding platform, and its operational flexibility is good.

[0042] In the above technical solution, the inner sleeve 22 is provided with a first pin hole 221 that penetrates in the radial direction, and the rotating shaft 4 is provided with a second pin hole 41 that is aligned with the first pin hole 221. After the first pin hole 221 is aligned with the second pin hole 41, the limiting member 5 is inserted to limit the rotating shaft 4 left and right relative to the inner sleeve 22. In this way, the inner sleeve and the rotating shaft are limited by the limiting member in a pin-connected manner, which makes the disassembly and assembly of the limiting member more flexible. It should be noted that the margin of movement of the vehicle ladder in the left and right movement between the two outer sleeves is small, which can prevent the vehicle ladder from moving left and right between the two outer sleeves to one end of the rotating shaft and loosening from any of the outer sleeves. Further preferably, as Figure 2 and Figure 6 As shown, two inner sleeves can be provided, and the two inner sleeves correspond one-to-one to the two ladder longitudinal beams. Each inner sleeve passes through the corresponding ladder longitudinal beam in the left-right direction, and one end of the inner sleeve extends between the two ladder longitudinal beams. At this time, the first pin hole only needs to be provided on any one of the inner sleeves.

[0043] The limiting member 5 in the above technical solution is a pin member (such as a steel ball pin), or the limiting member 5 includes a bolt 51 and a nut 52 (the bolt passes through the first pin hole and the second pin hole, and the nut is tightened on the threaded end of the bolt. This can prevent the limiting member from loosening and causing the boarding ladder to separate from the boarding platform, thereby causing a safety accident). It has a simple structure and is easy to disassemble and assemble.

[0044] like Figure 1 、 Figure 3 and Figure 4 As shown, in the above technical solution, the rear upper end of the boarding ladder 2 is provided with a limit block 23 protruding backward, and when the boarding ladder 2 is in the falling state, the rear end of the limit block 23 abuts against the boarding platform 1 to limit the position. In this way, when the boarding ladder 2 falls, its rear upper end can abut on the boarding platform 1 through the limit block 23 to limit the position, which makes the process of operators getting on and off the vehicle via the boarding ladder 2 safer. Preferably, the rear end of the limit block 23 in the above technical solution is provided with a flexible buffer pad 231 (which can be a nylon pad) to avoid the metallic impact sound generated when the limit block 23 abuts against the boarding platform 1 when the boarding ladder 2 falls.

[0045] like Figure 1 As shown, the limit block in this embodiment is arranged at the rear end of one of the ladder longitudinal beams, and the telescopic end of the telescopic drive member is rotatably connected to the other ladder longitudinal beam, and when the boarding ladder falls, the telescopic drive member is in a fully retracted state. At this time, the two ladder longitudinal beams are respectively limited by the telescopic drive member and the limit block, so that the boarding ladder has good stability in the falling state and is not easy to shake.

[0046] like Figures 1-4 As shown, in this embodiment, a lower cross beam 13 of a paper strip is protruding downward in the left and right directions at the middle of the lower end of the boarding platform. One end of the telescopic drive member is rotatably connected to the corresponding side of the front end of the lower cross beam 13, and the telescopic end of the telescopic drive member is rotatably connected to the rear side of the corresponding middle part in the length direction of the corresponding ladder longitudinal beam. In this way, the telescopic drive member can be extended to drive the boarding ladder to rotate upward to tilt up, and the telescopic drive member can be contracted to drive the boarding ladder to rotate downward to fall to the point where the limit block abuts against the corresponding part of the front side of the lower cross beam.

[0047] Example 2

[0048] This embodiment provides a sprayer, including the ladder assembly as described in Example 1, which has a simple structure and is convenient and safe for operators to get on and off the vehicle. The ladder assembly described in this embodiment is preferably installed at the front end of the sprayer frame, so that when the ladder is in the stored state (tilted forward), it does not affect the normal operation of the sprayer.

[0049] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A vehicle ladder assembly, characterized in that: The utility model comprises a boarding platform (1), a boarding ladder (2) and a telescopic drive member (3), wherein the boarding platform (1) is arranged horizontally, one end of the boarding ladder (2) is rotatably connected to the front side of the boarding platform (1), the telescopic drive member (3) is rotatably mounted on the boarding platform (1), the telescopic end of the telescopic drive member (3) is rotatably connected to the middle part of the boarding ladder (2), the telescopic drive member (3) is telescopic to drive the boarding ladder (2) to swing up and down to fall or tilt up, the front end of the boarding platform (1) is located on one side of the boarding ladder (2) and is provided with a fixed handrail (11) in the vertical direction, and the front end of the boarding ladder (2) is away from the fixed handrail (11) and is provided with a follower handrail (21) along the length direction of the boarding ladder (2).

2. The vehicle ladder assembly according to claim 1, characterized in that: When the boarding ladder (2) falls, the upper end of the fixed handrail (11) is higher than the upper end of the follower handrail (21), and the lower end of the follower handrail (21) is lower than the lower end of the fixed handrail (11).

3. The vehicle ladder assembly according to claim 1, characterized in that: The telescopic drive member (3) is a hydraulic cylinder. The telescopic drive member (3) extends to drive the vehicle ladder (2) to rotate to a horizontal position to be in a storage state, or the telescopic drive member (3) contracts to drive the vehicle ladder (2) to rotate downward to fall.

4. The vehicle ladder assembly according to claim 1, characterized in that: The boarding ladder (2) is rotatably connected to the boarding platform (1) via a rotating shaft (4), and both the boarding platform (1) and the boarding ladder (2) are detachably connected to the rotating shaft (4).

5. The vehicle ladder assembly according to claim 4, characterized in that: Two mutually aligned outer sleeves (12) are provided on the left and right sides of the front end of the boarding platform (1); an inner sleeve (22) is provided on the upper end of the boarding ladder (2) along the left and right directions; the inner sleeve (22) is located between the two outer sleeves (12); and the inner sleeve (22) and the two outer sleeves (12) are inserted into the rotating shaft (4) when they are aligned with each other; a limiting member (5) is provided on the inner sleeve (22) or any one of the outer sleeves (12) for limiting the left and right movement of the rotating shaft (4).

6. The vehicle ladder assembly according to claim 5, characterized in that: A first pin hole (221) is radially provided on the inner sleeve (22), and a second pin hole (41) is provided on the rotating shaft (4) and is aligned with the first pin hole (221). After the first pin hole (221) and the second pin hole (41) are aligned, the limiting member (5) is inserted to limit the rotating shaft (4) leftward and rightward relative to the inner sleeve (22).

7. The vehicle ladder assembly according to claim 6, characterized in that: The limiting member (5) is a latch member, or the limiting member (5) includes a bolt (51) and a nut (52).

8. The vehicle ladder assembly according to claim 1, characterized in that: A limit block (23) is provided at the rear upper end of the boarding ladder (2) and projects backwards, and when the boarding ladder (2) is in a falling state, the rear end of the limit block (23) abuts against the boarding platform (1) to limit the position.

9. The vehicle ladder assembly according to claim 8, characterized in that: A flexible buffer pad (231) is provided at the rear end of the limiting block (23).

10. A sprayer, characterized in that: It comprises the vehicle ladder assembly as described in any one of claims 1-9.

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