Step climber

Abstract

The utility model discloses a step type stair climbing machine, it includes the frame, the lower end of frame rear is fixed with a placing platform, the lower end of frame front is fixed with a motor, and the output shaft of motor is connected with a speed reducer, and the left and right ends of speed reducer are all connected with a swing arm, and the left and right sides of lower end of frame front are respectively installed with a wheel, it still includes two up and down extending movable rods, and the left and right sides of the upper end of frame are all fixed with a rotating shaft, and the outer side of two rotating shafts are all rotatably connected with a sleeve, and two movable rods respectively pass a sleeve and are in up and down sliding cooperation with the sleeve, and the upper end between two movable rods is connected with a handrail, and the lower end of two movable rods is all installed with an auxiliary wheel. The utility model increases two auxiliary wheels, and the two auxiliary wheels can be stored, and do not affect the stair climbing when using, and the two auxiliary wheels can also be opened to cooperate with the wheel and be used together, and it is convenient to push the stair climbing machine on the flat ground.

Description

Technical Field

[0001] This utility model relates to a stair climbing machine, specifically a step-climbing stair climbing machine. Background Technology

[0002] Common stair climbers generally include walk-behind stair climbers and tracked stair climbers. Walk-behind stair climbers use a pair of support arms to climb stairs and typically have only two wheels. Their structure generally includes a frame, a platform fixed to the lower rear of the frame, a motor fixed to the lower front of the frame, a reducer connected to the motor's output shaft, and swing arms connected to both ends of the reducer. A wheel is mounted on each of the left and right sides of the lower front of the frame. Compared to a four-wheeled cart, pushing a two-wheeled cart is more strenuous. While adding two more wheels to the top of the frame would make it easier to push on flat ground, these extra wheels would hinder the stair climber's ascent. Therefore, developing a walk-behind stair climber with four wheels that does not impede its stair climbing ability is a research direction sought by those in this field. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a step-climbing stair machine.

[0004] The technical solution of this utility model is: a step-climbing stair climber, which includes 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 swing arm connected to both ends of the reducer, a wheel installed on the left and right sides of the lower front end of the frame, and two vertically extending movable rods. A rotating shaft is fixed on both the left and right sides of the upper end of the frame, and a sleeve is rotatably connected to the outer side of each of the two rotating shafts. The two movable rods pass through the sleeves and slide vertically with the sleeves. A handrail is connected between the upper ends of the two movable rods, and an auxiliary wheel is installed at the lower end of each of the two movable rods.

[0005] Furthermore, a boss is fixed at the lower front end of each of the two movable rods, and a fixed rod is installed between the two bosses. The fixed rod is rotatably engaged with the bosses, and a locking device for locking the fixed rod is installed on both the left and right sides of the middle of the frame.

[0006] Furthermore, both locking devices include a fixed base, which is fixed on the left and right sides of the front center of the frame, respectively. The fixed base has a first slot with the opening facing forward. A connecting rod is hinged to the inner side of each fixed base. The connecting rod has a second slot with the opening facing forward in the middle. A tension spring is installed between the lower end of the connecting rod and the frame. A locking rod is fixed between the upper ends of the two connecting rods. The first slot and the second slot are for the fixing rod to be engaged.

[0007] Furthermore, a support is fixed on both the left and right sides of the upper front end of the frame. Both supports have grooves with openings facing forward, into which the fixing rods are inserted.

[0008] The advantages of using the step-climbing stair climber provided by this utility model are: two auxiliary wheels are added. These two auxiliary wheels can be stored away so as not to affect the climbing of stairs during use. The two auxiliary wheels can also be opened to work with the wheels, making it easier to push the stair climber on flat ground. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the present invention with the auxiliary wheel in the stowed state;

[0010] Figure 2 This is a schematic diagram of the overall structure of the present invention with the auxiliary wheel in the open state;

[0011] Figure 3 This is another overall structural diagram of the present invention with the auxiliary wheel in the open state.

[0012] In the diagram: 1—Frame, 2—Placement platform, 3—Motor, 4—Reducer, 5—Swing arm, 6—Wheel, 7—Moving rod, 8—Rotating shaft, 9—Sleeve, 10—Handrail, 11—Auxiliary wheel, 12—Boss, 13—Fixed rod, 14—Fixed seat, 141—First slot, 15—Connecting rod, 151—Second slot, 16—Tension spring, 17—Locking rod, 18—Support, 181—Groove, 19—Up / down floor selection switch, 20—Speed ​​adjustment switch, 21—Start switch. Detailed Implementation

[0013] 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:

[0014] like Figure 1 — Figure 3 As shown, a stair-climbing machine includes a frame 1, a platform 2 fixed to the lower rear end of the frame 1, a motor 3 fixed to the lower front end of the frame 1, a reducer 4 connected to the output shaft of the motor 3, a swing arm 5 connected to both ends of the reducer 4, a wheel 6 installed on the left and right sides of the lower front end of the frame 1, and two vertically extending movable rods 7. A rotating shaft 8 is fixed to the left and right sides of the upper end of the frame 1, and a sleeve 9 is rotatably connected to the outer side of the two rotating shafts 8. The two movable rods 7 pass through the sleeve 9 and slide vertically with the sleeve 9. A handrail 10 is connected between the upper ends of the two movable rods 7, and an auxiliary wheel 11 is installed at the lower end of the two movable rods 7.

[0015] like Figure 1 , Figure 3As shown, each of the two movable rods 7 has a boss 12 fixed at its lower front end. A fixed rod 13 is installed between the two bosses 12, and the fixed rod 13 is rotatably engaged with the bosses 12. A locking device for locking the fixed rod 13 is installed on both the left and right sides of the middle of the frame 1. Each locking device includes a fixed seat 14, which is fixed on the left and right sides of the middle front end of the frame 1. The fixed seat 14 has a first slot 141 with its opening facing forward. A connecting rod 15 is hinged to the inner side of each fixed seat 14. The middle of the connecting rod 15 has a second slot 151 with its opening facing forward. A tension spring 16 is installed between the lower end of the connecting rod 15 and the frame. A locking rod 17 is fixed between the upper ends of the two connecting rods 15. The first slot 141 and the second slot 151 are both for the fixed rod 13 to be engaged. The purpose of connecting rod 15 to locking rod 17 and tension spring 16 is to adjust the orientation of the second slot 151. In order to fix the fixing rod 13, the first slot 141 and the second slot 151 need to be staggered. Figure 1 As shown, when the locking rod 17 is not pressed back, the opening of the second slot 151 faces forward and downward, and the upper end of the connecting rod 15 blocks the fixing rod 13 to prevent it from falling off. When the locking rod 17 is pressed back, the connecting rod 15 rotates, and the second slot 151 faces forward, no longer misaligned with the first slot 141, thus allowing the fixing rod 13 to be removed. A support 18 is fixed to both the left and right sides of the upper front end of the frame 1. Both supports 18 have a groove 181 with a forward-facing opening, into which the fixing rod 13 is inserted.

[0016] like Figure 1 As shown, the two auxiliary wheels 11 are in the retracted state at this time, with the auxiliary wheels 11 located above the wheel 6. After pressing the locking rod 17 backward by hand, the locking rod 17 drives the two connecting rods 15 to rotate, and the upper end of the connecting rod 15 moves backward. At this time, the second slot 151 will face forward, and the left and right ends of the fixing rod 13 will be exposed. At this time, the fixing rod 13 can be moved out of the first slot 141 and the second slot 151. Then, hold the fixing rod 13 and pull it upward. The two movable rods 7 move upward, and the auxiliary wheel 11 is moved to the upper position of the frame 1. The fixing rod 13 is inserted into the groove 181. Rotate the movable rod 7 to rotate it to the desired position. Figure 3 In this state, the auxiliary wheel 11 is open, and the object can be placed on the ground. The placement state is as follows: Figure 2 As shown. To store auxiliary wheel 11, simply reverse the operation.

[0017] like Figure 1 As shown, the upper end of the frame 1 is equipped with a stair-climbing selection switch 19 and a speed adjustment switch 20, and the handrail is equipped with a start switch 21. The lower end of the handrail 10 is inserted into the upper end of the movable rod 7 and slides up and down with the movable rod 7. Finally, the two are fixed together by a locking knob. After unscrewing the locking knob, the height of the handrail 10 can be adjusted according to the user's height.

[0018] The stair climber provided by this utility model adds two auxiliary wheels 11. These two auxiliary wheels 11 can be stored away so as not to affect the stair climbing during use. The two auxiliary wheels 11 can also be opened to be used in conjunction with the wheel 6, making it easy to push the stair climber on flat ground.

[0019] Of course, the above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included within the patent protection scope of the present utility model.

Claims

1. A stair-climbing machine, 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 swing arm connected to both ends of the reducer, and wheels mounted on the left and right sides of the lower front end of the frame, characterized in that: It also includes two vertically extending movable rods. A rotating shaft is fixed on both the left and right sides of the upper end of the frame. A sleeve is rotatably connected to the outside of the two rotating shafts. The two movable rods pass through the sleeves and slide vertically with the sleeves. A handrail is connected between the upper ends of the two movable rods. An auxiliary wheel is installed at the lower end of the two movable rods.

2. The stair-climbing machine according to claim 1, characterized in that: Each of the two movable rods has a boss fixed at its lower front end, and a fixed rod is installed between the two bosses. The fixed rod is rotatably engaged with the bosses. A locking device for locking the fixed rod is installed on both the left and right sides of the middle of the frame.

3. The stair-climbing machine according to claim 2, characterized in that: Both locking devices include a fixed base, which is fixed on the left and right sides of the front center of the frame. The fixed base has a first slot with the opening facing forward. A connecting rod is hinged to the inner side of each fixed base. The middle of the connecting rod has a second slot with the opening facing forward. A tension spring is installed between the lower end of the connecting rod and the frame. A locking rod is fixed between the upper ends of the two connecting rods. The first slot and the second slot are for the locking rod to be engaged.

4. The stair-climbing machine according to claim 1, characterized in that: A support is fixed on both the left and right sides of the upper front end of the frame. Both supports have grooves with the opening facing forward, into which the fixing rod is inserted.

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