Traveling wheel folding structure
By designing a walking wheel folding structure including positioning wheel frame, wheel frame swing arm and ladder frame, the elastic rotation of the wheel frame is achieved by using the combination of torsion springs, the problem of difficulty in moving the fire hose truck on uneven ground and complex terrain is solved, and it can be folded and stored when not in use, improving movement efficiency and space utilization.
Patent Information
- Application Number
- CN202421719843.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing fire hose trucks have difficulty moving in uneven ground or complex terrain, and the traditional design cannot effectively reduce the space occupied when the wheel frame is folded and stored, affecting the vehicle layout and space utilization.
A walking wheel folding structure is designed, including a positioning wheel frame, a wheel frame swing arm and a ladder wheel frame. The elastic rotation of the wheel frame is achieved through the cooperation of the first and second torsion springs, which is convenient for folding, storage and deployment. When deploying, three sets of ladder wheels roll alternately to facilitate ladder walking.
The free movement of the fire hose truck in uneven ground and complex terrain is achieved without manual lifting, saving time and physical strength, improving movement efficiency, and can be folded and stored when not in use, without affecting the use of the ground.
Smart Images
Figure CN222946468U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire hose vehicles, in particular to a walking wheel folding structure. Background Art
[0002] Currently, commonly used fire hose trucks usually have several auxiliary wheels installed at the bottom to achieve walking and movement on the ground, which limits their mobility on uneven ground or complex terrain. When they need to cross obstacles or climb ladders, they often need to be lifted manually, which is time-consuming and labor-intensive, and cannot meet the use requirements. In addition, the traditional fire hose truck design may not make full use of the vehicle's space, especially when the wheel frame is folded and stored, it may not be able to effectively reduce the occupied space, affecting the overall layout and space utilization of the vehicle. Based on this, we propose a walking wheel folding structure. Utility Model Content
[0003] The purpose of the utility model is to overcome the above-mentioned problems existing in the prior art and to provide a folding structure of walking wheels, which is convenient for climbing stairs and does not require manual lifting of the fire hose truck for moving, thus saving time and physical strength and being highly efficient; and when not in use, it can also be folded and stored without affecting its use on the ground.
[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:
[0005] A walking wheel folding structure comprises a positioning wheel frame, a first swing arm of the wheel frame and a ladder wheel frame, wherein three groups of ladder wheels are arranged on the ladder wheel frame, and one side of the ladder wheel frame is rotatably connected to the second swing arm of the wheel frame; one end of the first swing arm of the wheel frame is rotatably connected to the positioning wheel frame via a first rotating shaft, a first torsion spring is arranged on the first rotating shaft, and the other end of the first swing arm of the wheel frame is rotatably connected to the second swing arm of the wheel frame via a second rotating shaft, a second torsion spring is arranged on the second rotating shaft, and a wheel frame groove which cooperates with the rotation of the first swing arm of the wheel frame is opened at the bottom of the positioning wheel frame.
[0006] Preferably, a plurality of fixing holes are evenly formed on the top of the positioning wheel frame.
[0007] Based on the above technical features, by using the fixing holes in conjunction with the screws, it is convenient to install the positioning wheel frame at the bottom middle position of the bracket of the foldable fire truck, and further facilitates the installation of the walking wheel folding structure on the foldable fire truck.
[0008] Preferably, an accommodating groove is provided at one end of the second swing arm of the wheel frame away from the ladder wheel frame, and the second torsion spring is located in the accommodating groove.
[0009] Based on the above technical features, it is convenient to elastically rotate the second swing arm of the wheel frame on the first swing arm of the wheel frame via the second torsion spring and the second rotating shaft.
[0010] In summary, the utility model includes at least one of the following beneficial effects: the utility model facilitates the elastic rotation of the first swing arm of the wheel frame on the positioning wheel frame for folding, storage and exhibition through the cooperation of the first rotating shaft and the first torsion spring, and keeps the position fixed after exhibition; facilitates the elastic rotation of the second swing arm of the wheel frame on the first swing arm of the wheel frame for folding, storage and exhibition through the cooperation of the second rotating shaft and the second torsion spring, and keeps the position fixed after exhibition. When both are exhibited, the three sets of ladder wheels rotate alternately to facilitate climbing stairs, and there is no need to lift the fire hose truck manually to move it, which saves time and physical strength and is highly efficient; and when not in use, it can also be folded and stored without affecting its use on the ground. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The schematic diagram of the folding structure of the walking wheel of the utility model in the folded storage state Figure 1 ;
[0012] Figure 2 The schematic diagram of the folding structure of the walking wheel of the utility model in the folded storage state Figure 2 ;
[0013] Figure 3 The schematic diagram of the unfolded state of the folding structure of the walking wheel of the utility model is shown in FIG. Figure 1 ;
[0014] Figure 4 The schematic diagram of the unfolded state of the folding structure of the walking wheel of the utility model is shown in FIG. Figure 2 ;
[0015] Figure 5 It is a schematic diagram of the installation structure of the folding structure of the running wheel of the utility model at the bottom of the foldable fire truck;
[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0017] 301-positioning wheel frame, 302-wheel frame first swing arm, 303-wheel frame second swing arm, 304-first torsion spring, 305-second torsion spring, 306-ladder wheel, 3011-wheel frame groove, 307-ladder wheel frame. DETAILED DESCRIPTION
[0018] The following is combined with Figure 1-5 The utility model is described in further detail.
[0019] An embodiment provided by the utility model: Figure 1-4As shown, a walking wheel folding structure includes a positioning wheel frame 301, a wheel frame first swing arm 302 and a ladder wheel frame 307, and three groups of ladder wheels 306 are arranged on the ladder wheel frame 307. The angle between any two adjacent groups of ladder wheels 306 and the center of the ladder wheel frame 307 is 120°, so that the three groups of ladder wheels 306 are evenly distributed on the ladder wheel frame 307, which is conducive to ladder climbing;
[0020] One side of the ladder wheel frame 307 is rotatably connected to the second swing arm 303 of the wheel frame, one end of the first swing arm 302 of the wheel frame is rotatably connected to the positioning wheel frame 301 through the first rotating shaft, a first torsion spring 304 is arranged on the first rotating shaft, the other end of the first swing arm 302 of the wheel frame is rotatably connected to the second swing arm 303 of the wheel frame through the second rotating shaft, a second torsion spring 305 is arranged on the second rotating shaft, and a receiving groove is provided at one end of the second swing arm 303 of the wheel frame away from the ladder wheel frame 307, and the second torsion spring 305 is located in the receiving groove, which is convenient for the second swing arm 303 of the wheel frame to be rotated. The second torsion spring 305 and the second rotating shaft are used for elastic rotation on the first swing arm 302 of the wheel frame, and a wheel frame groove 3011 is provided at the bottom of the positioning wheel frame 301 to cooperate with the rotation of the first swing arm 302 of the wheel frame, so as to facilitate the first swing arm 302 of the wheel frame to be extended outward on the positioning wheel frame 301, and limit the first swing arm 302 of the wheel frame in the wheel frame groove 3011, thereby realizing the movement of the folding structure of the walking wheel from the bottom position of the folding fire truck to the positions on both sides of the folding fire truck, and limiting the direction of the folding structure of the walking wheel relative to the two sides of the folding fire truck.
[0021] like Figure 5 As shown, a plurality of fixing holes are evenly arranged on the top of the positioning wheel frame 301. The fixing holes are used in conjunction with screws to facilitate the installation of the positioning wheel frame 301 at the bottom position of the bracket of the foldable fire truck, thereby further facilitating the installation of the walking wheel folding structure on the foldable fire truck.
[0022] Working principle:
[0023] The first swing arm 302 of the wheel frame is folded, stored and displayed by elastically rotating it on the positioning wheel frame 301 through the first rotating shaft and the first torsion spring 304, and the first swing arm 302 of the wheel frame is limited in the wheel frame groove 3011 after being displayed; the second swing arm 303 of the wheel frame is folded, stored and displayed by elastically rotating it on the first swing arm 302 of the wheel frame through the second rotating shaft and the second torsion spring 305, and the position is kept fixed after being displayed. On both sides of the foldable fire truck, when both are displayed, the folding structure of the walking wheels on each side rolls alternately through three sets of ladder wheels 306, which is convenient for climbing stairs and does not require manual lifting of the fire hose truck to move, saving time and physical strength, and being highly efficient; and when not in use, it can also be folded and stored at the bottom of the fire hose truck without affecting the use of the fire hose truck on the ground.
[0024] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A folding structure of a walking wheel, characterized in that: It comprises a positioning wheel frame (301), a first wheel frame swing arm (302) and a ladder wheel frame (307), wherein the ladder wheel frame (307) is provided with three sets of ladder wheels (306), and one side of the ladder wheel frame (307) is rotatably connected to a second wheel frame swing arm (303); One end of the first swing arm (302) of the wheel frame is rotationally connected to the positioning wheel frame (301) via a first rotating shaft, a first torsion spring (304) is arranged on the first rotating shaft, the other end of the first swing arm (302) of the wheel frame is rotationally connected to the second swing arm (303) of the wheel frame via a second rotating shaft, a second torsion spring (305) is arranged on the second rotating shaft, and a wheel frame groove (3011) is provided at the bottom of the positioning wheel frame (301) to cooperate with the rotation of the first swing arm (302) of the wheel frame.
2. A folding structure for walking wheels according to claim 1, characterized in that: A plurality of fixing holes are evenly arranged on the top of the positioning wheel frame (301).
3. The folding structure of the walking wheel according to claim 1, characterized in that: An end of the wheel frame second swing arm (303) away from the ladder wheel frame (307) is provided with a receiving groove, and the second torsion spring (305) is located in the receiving groove.