Walking type aerial work platform

Abstract

The utility model relates to a walking type aerial work platform which comprises a frame, and a plurality of supporting legs capable of ascending and descending are arranged at the lower end of the frame. The bogie is rotationally arranged on the frame, the upper end of the bogie is connected with a handle, the lower end of the bogie is connected with the front wheel steering mechanism, and when the handle swings leftwards and rightwards, the front wheel steering mechanism is driven by a rotating frame to synchronously swing leftwards and rightwards; the torsional spring is arranged between the frame and the bogie; when the handle deviates from the middle position in the horizontal direction, the torsion spring exerts acting force on the bogie, and the handle is driven by the bogie to reset to the middle position in the horizontal direction. The torsion spring is additionally arranged between the bogie and the frame, the bogie is driven by the torsion of the torsion spring to keep the centering position, and therefore it is guaranteed that the handle is centered.

Description

Technical Field

[0001] This utility model relates to a walk-through aerial work platform. Background Technology

[0002] In an electrically driven walking aerial work platform, after the platform reaches its designated location, it is supported by outriggers. At this point, the wheels under the platform will leave the ground. The handle and the front wheel steering mechanism are linked. Swinging the handle left and right can drive the front wheel steering mechanism to move left and right, thus adjusting the direction of the front wheels. Once the wheels leave the ground, there is no constraint from the ground on the wheels, and the handle also lacks lateral constraint. The handle is prone to swinging from the middle to the sides of the platform. When personnel on the platform lower the platform, they may crush the handle, leading to loss of control of the platform and a safety accident. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a walking aerial work platform to solve the technical problem that the handle of the previous work platform was prone to swinging left and right after being raised, which would cause the handle to be crushed and cause safety accidents.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A walk-through aerial work platform is provided, including...

[0006] The frame has multiple adjustable support legs at its lower end;

[0007] The bogie is rotatably mounted on the vehicle frame. The upper end of the bogie is connected to a handle, and the lower end of the bogie is connected to the front wheel steering mechanism. When the handle swings left and right, the front wheel steering mechanism is driven to swing left and right synchronously via the bogie.

[0008] A torsion spring is disposed between the frame and the bogie; when the handle deviates from the center position in the horizontal direction, the torsion spring applies a force to the bogie, which drives the handle to return to the center position in the horizontal direction.

[0009] Furthermore, the bogie includes

[0010] pivot, upper control arm, and lower control arm;

[0011] The pivot is vertically mounted on the frame, while the upper and lower control arms are horizontally mounted. The upper and lower ends of the pivot are fixedly connected to the upper and lower control arms, respectively. The upper control arm is connected to the handle, and the lower control arm is connected to the front wheel steering mechanism.

[0012] The torsion spring is sleeved on the rotating shaft, and the two torsion arms of the torsion spring abut against the frame and the lower control arm respectively;

[0013] The lower control arm is connected to the front wheel steering mechanism via a linkage assembly.

[0014] Furthermore, a first positioning block is provided on the lower control arm, and a second positioning block is provided on the frame, with the two positioning blocks located between the two torsion arms of the torsion spring;

[0015] The torsion spring abuts against the first positioning block via one of the torsion arms, causing the lower swing arm and handle to reset and center.

[0016] Furthermore, the linkage assembly includes a main linkage, a synchronizing rod, and a pair of auxiliary linkages. One end of each of the two auxiliary linkages is connected to the steering knuckles of the two front wheel steering mechanisms, and both ends of the synchronizing rod are connected to the auxiliary linkages. One end of the main linkage is connected to the lower control arm, and the other end of the main linkage is rotatably connected to the synchronizing rod and one of the auxiliary linkages via pins.

[0017] Furthermore, the front wheel steering mechanism includes

[0018] The steering knuckle is connected to the frame via a steering pivot, which passes vertically through the steering knuckle and the frame. A wheel axle is horizontally positioned on the outer side of the steering knuckle, and a wheel is mounted on the wheel axle.

[0019] Furthermore, the outrigger includes

[0020] The outer sleeve is fixedly connected to the frame.

[0021] The lifting shaft includes an installation section and a threaded section. The lifting shaft is inserted from the upper end of the outer sleeve. The installation section is connected to the top plate of the outer sleeve. An inner convex ring is provided below the installation section, and a retaining ring is provided above the installation section. The top plate is located between the retaining ring and the inner convex ring. A one-way thrust bearing is provided between the inner convex ring and the top plate.

[0022] The telescopic rod has its upper end inserted into the lower end of the outer sleeve, and the threaded section of the lifting shaft is screwed into the telescopic rod. A landing plate is provided at the lower end of the telescopic rod.

[0023] The beneficial effects of this utility model are:

[0024] The present invention relates to a walking-type aerial work platform, which adds a torsion spring between the bogie and the frame. The torsion of the torsion spring drives the bogie to maintain a centered position, thereby ensuring that the handle is centered. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the walk-through aerial work platform of this utility model;

[0027] Figure 2 This is a structural diagram of the connection between the handle and the bogie;

[0028] Figure 3 This is a schematic diagram of a torsion spring;

[0029] Figure 4 This is a schematic diagram of the relationship between the handle, bogie, linkage assembly, and front wheel steering mechanism;

[0030] Figure 5 This is a schematic diagram of the front wheel steering mechanism;

[0031] Figure 6 This is a diagram of the support legs;

[0032] Among them, 1. frame, 11. handlebars;

[0033] 2. Bogie; 21. Shaft; 22. Upper control arm; 23. Lower control arm;

[0034] 3. Torsion spring,

[0035] 41. First positioning block; 42. Second positioning block;

[0036] 5. Front wheel steering mechanism; 51. Steering knuckle; 52. Steering hinge; 53. Wheel axle;

[0037] 61. Main connecting rod; 62. Synchronizing rod; 63. Secondary connecting rod;

[0038] 7. Outriggers; 71. Outer sleeve; 72. Lifting shaft; 721. Inner convex ring; 73. Telescopic rod; 74. Landing plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions 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 protection scope of this utility model.

[0040] This application provides a walkable aerial work platform, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0041] To address the technical problem in existing technologies where the handle 11 of the work platform easily swings left and right after being raised, leading to damage to the handle 11 and potential safety accidents, an embodiment of this application provides a walk-through aerial work platform. This is described in detail below.

[0042] like Figures 1 to 6 As shown, a walk-through aerial work platform includes...

[0043] The frame 1 has four adjustable support legs 7 at its lower end;

[0044] Bogie 2 is rotatably mounted on the frame 1. The upper end of the bogie 2 is connected to the handle 11, and the lower end of the bogie 2 is connected to the front wheel steering mechanism 5. When the handle 11 swings left and right, the front wheel steering mechanism 5 is driven to swing left and right synchronously through the rotating frame.

[0045] Torsion spring 3 is disposed between frame 1 and bogie 2; when handle 11 deviates from the middle position in the horizontal direction, torsion spring 3 applies force to bogie 2, and bogie 2 drives handle 11 to return to the middle position in the horizontal direction.

[0046] Specifically, as an optional implementation method in this embodiment, such as Figure 2 and Figure 3 As shown, the bogie 2 includes

[0047] Rotating shaft 21, upper swing arm 22 and lower swing arm 23;

[0048] The rotating shaft 21 is vertically arranged on the frame 1, and the upper swing arm 22 and the lower swing arm 23 are horizontally arranged. The upper and lower ends of the rotating shaft 21 are fixedly connected to the upper swing arm 22 and the lower swing arm 23 respectively. The upper swing arm 22 is rotatably connected to the lower end of the handle 11, and the lower swing arm 23 is connected to the front wheel steering mechanism 5.

[0049] The torsion spring 3 is sleeved on the rotating shaft 21, and the two torsion arms of the torsion spring 3 abut against the frame 1 and the lower control arm 23 respectively.

[0050] The lower control arm 23 is connected to the front wheel steering mechanism 5 via a linkage assembly.

[0051] The handle 11 swings up and down on the frame 1 via the pin between the handle 11 and the upper swing arm 22, while the handle 11 swings left and right on the frame 1 via the pivot 21 in the bogie 2.

[0052] Specifically, as an optional implementation method in this embodiment, such as Figure 2 and Figure 3As shown, a first positioning block 41 is provided on the lower control arm 23, and a second positioning block 42 is provided on the frame 1. The two positioning blocks are located between the two torque arms of the torsion spring 3.

[0053] The torsion spring 3 abuts against the first positioning block 41 via one of its torsion arms, thereby driving the lower swing arm 23 and the handle 11 to reset and center.

[0054] Specifically, as an optional implementation method in this embodiment, such as Figure 4 As shown, the linkage assembly includes a main linkage 61, a synchronizing rod 62, and a pair of auxiliary linkages 63. One end of each of the two auxiliary linkages 63 is connected to the steering knuckles 51 of the two front wheel steering mechanisms 5. Both ends of the synchronizing rod 62 are connected to the auxiliary linkages 63. One end of the main linkage 61 is connected to the lower control arm 23, and the other end of the main linkage 61 is rotatably connected to the synchronizing rod 62 and one of the auxiliary linkages 63 by a pin.

[0055] In this embodiment, as Figure 2 As shown, the lower end of the lower swing arm 23 is provided with a connecting shaft, which is connected to the main connecting rod 61.

[0056] Specifically, as an optional implementation method in this embodiment, such as Figure 5 As shown, the front wheel steering mechanism 5 includes

[0057] Steering knuckle 51 is connected to frame 1 via steering pivot 52. Steering pivot 52 passes vertically through steering knuckle 51 and frame 1. Wheel axle 53 is horizontally arranged on the outer side of steering knuckle 51, and wheel is mounted on wheel axle 53.

[0058] In this embodiment, the steering knuckle 51 drives the front wheel to move horizontally on the frame 1 via the steering pivot 52. When the handle 11 is rotated left and right, it drives the bogie 2 to rotate. The bogie 2 then drives the main connecting rod 61 to move. The main connecting rod 61 drives the two auxiliary connecting rods 63 to move synchronously via the synchronizing rod 62. The auxiliary connecting rods 63 drive the steering knuckle 51 to rotate, and finally drive the front wheel to rotate left and right, thereby realizing wheel steering control.

[0059] Specifically, as an optional implementation method in this embodiment, such as Figure 6 As shown, the support leg 7 includes an outer sleeve 71, which is fixedly connected to the frame 1;

[0060] The lifting shaft 72 includes an installation section and a threaded section. The lifting shaft 72 is inserted from the upper end of the outer sleeve 71. The installation section is connected to the top plate of the outer sleeve 71. An inner convex ring 721 is provided below the installation section, and a retaining ring is provided above the installation section. The top plate is located between the retaining ring and the inner convex ring 721. A one-way thrust bearing is provided between the inner convex ring 721 and the top plate.

[0061] The telescopic rod 73 is inserted from the lower end of the outer sleeve 71 at its upper end. The threaded section of the lifting shaft 72 is screwed into the telescopic rod 73. The lower end of the telescopic rod 73 is provided with a landing plate 74.

[0062] The upper part of the lifting shaft 72 extending out of the top plate of the cylinder is equipped with a wrench operating end. The wrench can drive the lifting shaft 72 to rotate. The rotation of the lifting shaft 72 causes the telescopic rod 73 to extend downward. The entire support leg 7 is supported by the ground through the bottom landing plate 74. The four support legs 7 support the work platform.

[0063] The working principle of this utility model of a pedestrian-type aerial work platform:

[0064] Originally, there was no torsion spring 3 on the bogie 2 and the frame 1. This meant that after the wheel left the ground, if the handle 11 swung left or right, the handle 11 could easily move the wheel left or right via the bogie 2. Now, with the addition of the torsion spring 3, even if the wheel leaves the ground, the torsion spring 3 can still restrain the first positioning block 41 in the center position, thus restricting the bogie 2 to be centered, and ultimately restricting the handle 11 to be centered. All components selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0065] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0066] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0068] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0069] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0070] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A walk-through aerial work platform, characterized in that, include The frame (1) is provided with multiple lifting legs at the lower end of the frame (1); Bogie (2), the bogie (2) is rotatably mounted on the frame (1), the upper end of the bogie (2) is connected to the handle (11), and the lower end of the bogie (2) is connected to the front wheel steering mechanism (5). When the handle (11) swings left and right, the front wheel steering mechanism (5) is driven to swing left and right synchronously through the rotating frame. Torsion spring (3) is disposed between the frame (1) and the bogie (2). When the handle (11) deviates from the middle position in the horizontal direction, the torsion spring (3) applies a force to the bogie (2), which drives the handle (11) to return to the middle position in the horizontal direction via the bogie (2).

2. The walk-through aerial work platform according to claim 1, characterized in that, The bogie (2) includes Rotary pivot (21), upper swing arm (22) and lower swing arm (23); The pivot (21) is vertically mounted on the frame (1), and the upper swing arm (22) and lower swing arm (23) are horizontally mounted. The upper and lower ends of the pivot (21) are fixedly connected to the upper swing arm (22) and the lower swing arm (23) respectively. The upper swing arm (22) is connected to the handle (11), and the lower swing arm (23) is connected to the front wheel steering mechanism (5). The torsion spring (3) is sleeved on the rotating shaft (21), and the two torsion arms of the torsion spring (3) abut against the frame (1) and the lower control arm (23) respectively; The lower control arm (23) is connected to the front wheel steering mechanism (5) via a linkage assembly.

3. The walk-through aerial work platform according to claim 2, characterized in that, The lower control arm (23) is provided with a first positioning block (41), and the frame (1) is provided with a second positioning block (42). The two positioning blocks are located between the two torsion arms of the torsion spring (3). The torsion spring (3) abuts against the first positioning block (41) via one of the torsion arms, driving the lower swing arm (23) and the handle (11) to reset and center.

4. The walk-through aerial work platform according to claim 2, characterized in that, The linkage assembly includes a main linkage (61), a synchronizing rod (62), and a pair of auxiliary linkages (63). One end of each of the two auxiliary linkages (63) is connected to the steering knuckles (51) of the two front wheel steering mechanisms (5). Both ends of the synchronizing rod (62) are connected to the auxiliary linkages (63). One end of the main linkage (61) is connected to the lower control arm (23), and the other end of the main linkage (61) is rotatably connected to the synchronizing rod (62) and one of the auxiliary linkages (63) by a pin.

5. The walk-through aerial work platform according to claim 2, characterized in that, The front wheel steering mechanism (5) includes Steering knuckle (51) is connected to the frame (1) via steering pivot (52). The steering pivot (52) passes vertically through the steering knuckle (51) and the frame (1). A wheel axle (53) is horizontally arranged on the outside of the steering knuckle (51), and a wheel is mounted on the wheel axle (53).

6. The walk-through aerial work platform according to claim 2, characterized in that, The outrigger (7) includes The outer sleeve (71) is fixedly connected to the frame (1); The lifting shaft (72) includes an installation section and a threaded section. The lifting shaft (72) is inserted from the upper end of the outer sleeve (71). The installation section is connected to the top plate of the outer sleeve (71). An inner convex ring (721) is provided below the installation section. A retaining ring is provided above the installation section. The top plate is located between the retaining ring and the inner convex ring (721). A one-way thrust bearing is provided between the inner convex ring (721) and the top plate. Telescopic rod (73), the upper end of which is inserted into the lower end of the outer sleeve (71), the threaded section of the lifting shaft (72) is screwed into the telescopic rod (73), and a landing plate (74) is provided at the lower end of the telescopic rod (73).

Images