CN216374694U - Rear wheel variable stair climbing trolley - Google Patents
Rear wheel variable stair climbing trolley Download PDFInfo
- Publication number
- CN216374694U CN216374694U CN202123252175.6U CN202123252175U CN216374694U CN 216374694 U CN216374694 U CN 216374694U CN 202123252175 U CN202123252175 U CN 202123252175U CN 216374694 U CN216374694 U CN 216374694U
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- China
- Prior art keywords
- rear wheel
- mounting bracket
- stair climbing
- variable
- wheel mounting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000009194 climbing Effects 0.000 title claims abstract description 42
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a stair climbing trolley with variable rear wheels, which is characterized by comprising front wheels, a front wheel mounting bracket, a container, a pull rod, a rear wheel mounting bracket and variable rear wheels, wherein the front wheels are arranged on the front wheel mounting bracket; the front wheel is arranged on the front wheel mounting bracket; the front wheel mounting bracket is fixedly connected with the container; the container is fixedly welded on the pull rod; the lower end of the pull rod is fixedly connected with the rear wheel mounting bracket through welding; the two ends of the rear wheel mounting bracket are provided with variable rear wheels; the variable rear wheel is provided with a rear wheel pin hole; the variable rear wheel is a wheel formed by combining six blades; the rear wheel pin holes are fixedly connected with each other through pins; when the stair climbing trolley is used at ordinary times, six blades of the variable rear wheel of the stair climbing trolley are unfolded to form a complete round-like structure, when stairs need to climb, pins on the blades of the variable rear wheel are detached, every two blades are overlapped to form a three-width arc-shaped tire structure, and each spoke is alternately used as a supporting point to be in contact with a stair step to climb the stairs; the stair climbing device has the characteristics of reasonable structure, convenience in installation, capability of effectively improving the stair climbing efficiency and avoiding time and labor waste caused by stair climbing of a single tire.
Description
Technical Field
The utility model relates to a stair climbing trolley, in particular to a stair climbing trolley with variable rear wheels.
Background
Statistical data shows that the economy of China is continuously developed, the urbanization level is gradually improved, more and more people live in the building, but the goods are transported by adopting a stair climbing trolley when being carried because of no elevator. Based on the background, the study on the variable rear-wheel stair climbing trolley is developed, and the variable rear-wheel stair climbing trolley has important significance in providing convenience for transporting articles.
Studies have shown that the transport of items by stair climbing trolleys is an effective way of transporting items upstairs without elevators. Therefore, a self-adaptive mechanical power-assisted stair climbing trolley is designed, for example, the self-adaptive mechanical power-assisted stair climbing trolley disclosed by CN201921949558.9, and is characterized in that jolts of tripods, casters, supporting rods, damping springs and the like during going upstairs are reduced. CN201910535510.1 discloses a stair climbing trolley, which is characterized in that the front and rear wheels of the trolley are driven to climb stairs by driving the circular arc-shaped front main rod and the elongated rear main rod; CN202022513651.4 discloses a building dolly is climbed in gas cylinder transport, and characterized by pole one end cover is equipped with the telescopic link, and the frame can be according to the size freedom height-adjusting of fortune gas cylinder. CN201910479670.9 discloses a wheel-lacking anti-skid and anti-falling stair climbing trolley, which is characterized in that a gap of a lacking arc wheel lacking a plurality of arc sections is abutted on a stair plane, so that the trolley can be stopped midway; the stair climbing trolley disclosed in CN201521001700.9 is characterized in that a double-crankshaft connecting rod horizontal rotation mechanical structure is adopted, two groups of double-crankshaft mechanisms are arranged on the outer sides of wall plates on two sides of the trolley, four legs are connected and installed through connecting rods and are driven by a motor to rotate, so that the trolley and the legs alternately ascend by one step every circle of crankshaft rotation, and the ascending height is just the height of the steps of the stairs.
However, the above devices all have a common problem that the motion can be completed by arranging a plurality of trundles or arc-lacking wheels on the trolley, so that the cost is high and the arc-lacking wheels are inconvenient to use on the flat ground. How to arrange a rear wheel variable stair climbing trolley which has a simple structure and can effectively climb the stairs becomes a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to solve the problems of complex structure and inconvenient flat ground use of the stair climbing trolley, and provides the stair climbing trolley with the variable rear wheels.
In order to solve the technical problem, the technical scheme adopted by the utility model is as follows:
a stair climbing trolley with variable rear wheels is characterized by comprising front wheels, a front wheel mounting bracket, a cargo box, a pull rod, a rear wheel mounting bracket and variable rear wheels; the front wheel is arranged on the front wheel mounting bracket; the front wheel mounting bracket is fixedly connected with the container; the container is fixedly welded on the pull rod; the lower end of the pull rod is fixedly connected with the rear wheel mounting bracket through welding; the two ends of the rear wheel mounting bracket are provided with variable rear wheels; the variable rear wheel is provided with a rear wheel pin hole; the rear wheel pin holes are fixedly connected with each other through pins; the variable rear wheel is formed by combining six blades; when the variable rear wheel is used at ordinary times, six blades of the variable rear wheel are unfolded to form a complete round-like structure, when stairs need to climb, pins on the blades of the variable rear wheel are detached, every two blades are overlapped to form three-width type arc-shaped tire structures, and each arc-shaped tire structure is alternately used as a supporting point to be in contact with a stair step to climb the stairs.
Further, the variable rear wheel is a wheel formed by combining six blades.
Furthermore, when the stair climbing trolley is used at ordinary times, six blades of the variable rear wheel of the stair climbing trolley are unfolded to form a complete structure similar to a circle, and every two blades are overlapped to form a three-width arc-shaped tire structure when the stair climbing trolley is used for climbing stairs.
Compared with the prior art, the utility model has the following advantages:
1. when the variable rear wheel is used at ordinary times, the six blades of the variable rear wheel form a complete circular arc together, and the variable rear wheel is convenient to transport; when climbing stairs, the six blades are combined into a three-width arc-shaped tire structure, and each spoke is alternately used as a supporting point to contact with a stair step to climb the stairs, so that the stair climbing is convenient and labor-saving.
2. The variable rear wheel mechanism has simple structure, high reliability and low manufacturing cost.
Drawings
Fig. 1 is an isometric view of the present invention in a normal use condition.
Fig. 2 is a left side view of the present invention in a normal use state.
FIG. 3 is a schematic view of the tire structure of the present invention in a normal use state.
Fig. 4 is a left side view of the present invention in a stair climbing state.
Fig. 5 is a front view of the present invention in a stair climbing state.
Fig. 6 is an isometric view of the utility model in a stair climbing position.
Fig. 7 is a plan view of the present invention in a state of climbing stairs.
Figure 8 is a schematic view of a pin of the present invention.
In the figure: 1-front wheel, 2-front wheel mounting bracket, 3-cargo box, 4-pull rod, 5-rear wheel mounting bracket, 6-variable rear wheel, 61-rear wheel pin hole, 62-pin, 63-blade.
Detailed Description
The utility model will be further explained with reference to the drawings and the embodiments.
Example (b): referring to fig. 1, 2, 3, 4, 5, 6, 7 and 8, a rear wheel variable stair climbing trolley is disclosed, which is characterized by comprising a front wheel 1, a front wheel mounting bracket 2, a cargo box 3, a pull rod 4, a rear wheel mounting bracket 5 and a variable rear wheel 6; the front wheel 1 is arranged on the front wheel mounting bracket 2; the front wheel mounting bracket 2 is fixedly connected with the container 3; the container 3 is fixedly welded on the pull rod 4; the lower end of the pull rod 4 is fixedly connected with the rear wheel mounting bracket 5 through welding; the two ends of the rear wheel mounting bracket 5 are provided with variable rear wheels 6; the variable rear wheel 6 is provided with a rear wheel pin hole 61; the rear wheel pin holes 61 are fixedly connected with each other through pins 62; the rear wheel 6 is composed of six blades 63.
When the variable rear wheel is used at ordinary times, the six blades 63 of the variable rear wheel 6 are unfolded to form a complete structure similar to a circle, when stairs need to climb, the pins 62 on the blades 63 of the variable rear wheel are detached, every two blades 63 are overlapped to form three arc-shaped tire structures, and each arc-shaped tire structure is alternately used as a supporting point to be in contact with a stair step to climb the stairs. The stair climbing device has the characteristics of reasonable structure, convenience in installation, capability of effectively improving the stair climbing efficiency and avoiding time and labor waste caused by stair climbing of a single tire.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (3)
1. A stair climbing trolley with variable rear wheels is characterized by comprising front wheels, a front wheel mounting bracket, a cargo box, a pull rod, a rear wheel mounting bracket and variable rear wheels; the front wheel is arranged on the front wheel mounting bracket; the front wheel mounting bracket is fixedly connected with the container; the container is fixedly welded on the pull rod; the lower end of the pull rod is fixedly connected with the rear wheel mounting bracket through welding; the two ends of the rear wheel mounting bracket are provided with variable rear wheels; the variable rear wheel is provided with a rear wheel pin hole; the rear wheel pin holes are fixedly connected with each other through pins; the variable rear wheel is formed by combining six blades; the six blades can form a three-width arc-shaped tire structure through rotation for climbing stairs.
2. The stair climbing trolley with the changeable rear wheels as claimed in claim 1, wherein: the variable rear wheel is formed by combining six blades.
3. The stair climbing trolley with the changeable rear wheels as claimed in claim 1, wherein: six blades can form three-width arc-shaped tire structures through rotation for climbing stairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123252175.6U CN216374694U (en) | 2021-12-23 | 2021-12-23 | Rear wheel variable stair climbing trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123252175.6U CN216374694U (en) | 2021-12-23 | 2021-12-23 | Rear wheel variable stair climbing trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216374694U true CN216374694U (en) | 2022-04-26 |
Family
ID=81235337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123252175.6U Expired - Fee Related CN216374694U (en) | 2021-12-23 | 2021-12-23 | Rear wheel variable stair climbing trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216374694U (en) |
-
2021
- 2021-12-23 CN CN202123252175.6U patent/CN216374694U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220426 |