Stair climbing machine without support arms

Abstract

The utility model discloses a kind of stair climbing machines without supporting arm, including rack, rack rear lower end is fixed with a placing table, rack front lower end is fixed with a motor, the output shaft of motor is connected with a speed reducer, speed reducer left and right two ends are respectively installed with a rotating shaft, two rotating shafts are respectively connected with a wheel, the outer wall of two wheels is all convex with a circle of convex strip, groove is formed between adjacent convex strip, groove is used to cooperate stair step. The stair climbing machine involved in the utility model does not need supporting arm, can climb stairs by the groove of wheel and stair step cooperation, and compared with triangular wheel structure, such wheel is simpler, and smaller in size.

Description

Technical Field

[0001] This utility model relates to a stair climbing machine, specifically a stair climbing machine without a support arm. Background Technology

[0002] Common stair climbers generally come in two types: walk-behind stair climbers and tracked stair climbers. Walk-behind stair climbers climb stairs using a pair of support arms, while tracked stair climbers climb stairs using tracks. There is also a three-wheeled stair climber, which is a stair climber without support arms. It removes the support arms of the walk-behind stair climber and modifies the wheels on both sides. Each side has a triangular wheel assembled from three wheels. The structure of this triangular wheel is more complex and larger than that of ordinary wheels, making it inconvenient to store. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the purpose of this utility model is to provide a stair climbing machine without a support arm.

[0004] The technical solution of this utility model is: a stair climbing machine without support arm, including a frame, a platform fixed at the lower rear end of the frame, a motor fixed at the lower front end of the frame, a reducer connected to the output shaft of the motor, a rotating shaft installed at the left and right ends of the reducer, and a wheel connected to each of the two rotating shafts. A ring of raised strips is provided on the outer wall of each wheel, and a groove is formed between adjacent raised strips. The groove is used to fit the stair steps.

[0005] Furthermore, the groove used to accommodate the steps of a staircase refers to the groove being used to allow the corners of the staircase steps to engage.

[0006] Furthermore, the grooves are evenly distributed on the outer wall surface of the wheel.

[0007] The advantages of using the stair climber without support arm provided by this utility model are: the stair climber does not require a support arm and can climb stairs by using the grooves of the wheels to cooperate with the stair steps. Compared with the triangular wheel structure, this wheel is simpler and smaller in size. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0009] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0010] In the diagram: 1—frame, 2—placement platform, 3—motor, 4—reducer, 5—shaft, 6—wheel, 61—protrusion, 62—groove, 7—staircase step, 71—step edge, 8—up / down selector switch, 9—speed adjustment switch, 10—start switch, 11—handrail. Detailed Implementation

[0011] To provide a more intuitive and complete understanding of the technical solution of this utility model, the following non-limiting features are described in conjunction with the accompanying drawings:

[0012] like Figure 1 , Figure 2 As shown, a stair climber without a support arm includes a frame 1. A platform 2 is fixed to the lower rear end of the frame 1, and a motor 3 is fixed to the lower front end of the frame 1. The output shaft of the motor 3 is connected to a reducer 4. A rotating shaft 5 is installed at the left and right ends of the reducer 4, and a wheel 6 is connected to each of the two rotating shafts 5. A ring of raised strips 61 is provided on the outer wall of each wheel 6, and a groove 62 is formed between adjacent raised strips 61. The grooves 62 are evenly distributed on the outer wall of the wheel 6 and are used to cooperate with the stair steps 7.

[0013] The groove 62, used to accommodate the steps of the staircase, means that the groove 62 allows the edge 71 of the stair step 7 to engage. If the outer wall of the wheel 6 does not have the groove 62, then when the stair climber is climbing, the wheel 6 will slip at the edge 71 of the stair step 7, but if... Figure 2 As shown, when the wheel 6 with groove 62 is climbing stairs, the edge 71 of the step 7 of the stair step 7 will get into the groove 62 of the wheel 6, which is equivalent to the wheel 6 "grabbing" the edge 71 of the step, making the wheel 6 less likely to slip.

[0014] The present invention provides a stair climber without a support arm. The stair climber does not require a support arm and can climb stairs by using the grooves 62 of the wheel 6 to cooperate with the stair steps 7. This wheel 6 is simpler and smaller in size than the triangular wheel structure.

[0015] like Figure 1 As shown, a stair-climbing machine has a stair-climbing selection switch 8 and a speed adjustment switch 9 on its upper end. A handrail 11 is installed on the upper end of the frame 1, and a start switch 10 is installed on the handrail 11. The stair-climbing machine can also start the motor 3 for assistance on flat ground, and can carry loads up to 300 kg on flat ground. Of course, the above is only a preferred embodiment of this utility model, and does not limit the patent scope of this utility model. All simple modifications and equivalent structural changes made based on the description and drawings of this utility model should also be included within the patent protection scope of this utility model.

Claims

1. A stair climber without a support arm, comprising a frame, a platform fixed to the lower rear end of the frame, a motor fixed to the lower front end of the frame, a reducer connected to the output shaft of the motor, a rotating shaft mounted on each of the left and right ends of the reducer, and a wheel connected to each of the two rotating shafts, characterized in that: Both wheels have a raised ridge on their outer wall, and grooves are formed between adjacent ridges to fit the stair steps.

2. The stair climber without support arm according to claim 1, characterized in that: The groove used to fit the steps of a staircase refers to the groove into which the edges of the staircase steps are inserted.

3. The stair climber without support arm according to claim 2, characterized in that: The grooves are evenly distributed on the outer wall surface of the wheel.

Images