Stair climbing device

Abstract

A stair climbing device is used for moving on a stair, due to the fact that the contact area between a crawler-type structure and an external corner of the stair is small, a crawler belt and the external corner of the stair are prone to slipping, and the stair climbing stability of a stair climbing machine is influenced, in the embodiment, the stair climbing device comprises a first crawler belt mechanism and a second crawler belt mechanism which are connected with each other; the lower end face of the second track mechanism is obliquely arranged relative to the lower end face of the first track mechanism, and when the lower end face of the second track mechanism abuts against a certain external corner of the stair, the first track mechanism inclines relative to the plane where the connecting line of the external corners of the stair is located, so that the end of the first track mechanism abuts against the horizontal plane of the stair. The lower end face of the second crawler belt moves to the horizontal plane of the stair along with continuous advancing of the stair climbing device, at the moment, a position difference exists between the plane where the connecting line of the second crawler belt and the external corner of the stair is located, and therefore the whole stair climbing device is supported, and the stair climbing machine can be effectively prevented from slipping; and the use stability of the stair climbing machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair climbing machines, and in particular relates to a stair climbing device. Background Art

[0002] At present, the known transport trucks are composed of tires and a frame. The heavy objects are placed on the transport truck and pushed by people. However, this type of transport truck can only move on a flat road without steps. When it is necessary to carry the motor up and down the stairs, it is extremely laborious and dangerous to use an ordinary transport truck to go up and down the stairs, so it is generally necessary to rely on manual transportation. At present, there are crawler transport trucks on the market. Most of these crawler transport trucks only have a single crawler structure or two parallel crawlers. During the climbing process, the contact area between the crawler and the positive corner of the stairs is small, causing the crawler to slip, affecting the climbing efficiency of the transport truck, and even creating the risk of slipping from the stairs. Summary of the invention

[0003] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a stair climbing device with a simple structure, which adopts multiple crawler structures to prevent the stair climbing machine from sliding off the positive corner of the stairs.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A stair climbing device comprises a first crawler mechanism and a second crawler mechanism connected to each other, wherein the lower end surface of the second crawler mechanism is inclined relative to the lower end surface of the first crawler mechanism so that the ends of the first crawler mechanism and / or the second crawler mechanism abut against the stairs.

[0006] As a preferred solution of the present invention, at least a portion of the second crawler mechanism is lower than the lower end surface of the first crawler mechanism.

[0007] As a preferred solution of the utility model, the second track mechanism includes a second track, the lower end surface of the second track includes a first moving section for moving on the horizontal plane of the stairs and a second moving section for moving on the positive corner of the stairs, and the first moving section is arranged below the lower end surface of the first track mechanism.

[0008] As a preferred solution of the utility model, the lower end surface of the second crawler also includes a third moving section, and the first moving section and the third moving section are respectively arranged on both sides of the second moving section.

[0009] As a preferred solution of the utility model, the stair climbing device also includes a connecting frame for connecting the first crawler mechanism and the second crawler mechanism, and a height difference is provided at both ends of the connecting frame so that the first crawler mechanism and the second crawler mechanism are relatively inclined.

[0010] As a preferred solution of the utility model, two first crawler mechanisms are respectively connected to both sides of the connecting frame, and two first drive motors are installed on the connecting frame, and the first drive motors are respectively connected to the first crawler mechanisms.

[0011] As a preferred solution of the utility model, the first crawler mechanism includes a first crawler, two first crawler wheels and a first crawler plate and a second crawler plate arranged in parallel, the first crawler wheel is installed between the first crawler plate and the second crawler plate, the first crawler is sleeved on the outside of the first crawler wheel, and the first crawler plate is connected to the connecting frame.

[0012] As a preferred solution of the utility model, a connecting beam is provided between the first track shoes, and a seat is swingably mounted on the connecting beam.

[0013] As a preferred solution of the utility model, the second crawler mechanism includes four second track wheels and a third track shoe and a fourth track shoe arranged in parallel. The four second track wheels are installed between the third track shoe and the fourth track shoe, and the third track shoe is connected to the connecting frame.

[0014] As a preferred solution of the utility model, a second drive motor is installed on the third track shoe, and the second drive motor is connected to the second track wheel.

[0015] The beneficial effect of the utility model is that during the stair climbing process of the stair climbing device, the first crawler mechanism and the second crawler mechanism can be supported on the horizontal plane of the stairs in turn, effectively preventing the stair climbing machine from slipping and falling, and improving the use stability of the stair climbing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the stair climbing device.

[0017] Figure 2 It is a schematic diagram of the frame structure of the stair climbing device.

[0018] Figure 3 It is a schematic diagram of the crawling of the first crawler mechanism abutting against the stairs.

[0019] Figure 4 It is a schematic diagram of the crawling of the second crawler mechanism abutting against the stairs.

[0020] Figure 5 It is a schematic diagram of the climbing of the stair climbing device on a plane.

[0021] Figure numerals: first crawler mechanism 1, first crawler 1-1, first crawler wheel 1-2, first crawler shoe 1-3, second crawler shoe 1-4, second crawler mechanism 2, second crawler 2-1, first moving section 2-2, second moving section 2-3, third moving section 2-4, second crawler wheel 2-5, third crawler shoe 2-6, fourth crawler shoe 2-7, second drive motor 2-8, connecting frame 3, first drive motor 4, drive cylinder 5, connecting beam 6, seat 7, DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] The second crawler mechanism 2 is a first crawler mechanism 2 and a second crawler mechanism 2 is a second crawler mechanism 2. The first crawler mechanism 2 is a second crawler mechanism 2 and a second crawler mechanism 2 is a second crawler mechanism 2. The first crawler mechanism 1 is a first crawler mechanism 2 and a second crawler mechanism 2 is a second crawler mechanism 2. The first crawler mechanism 1 is a second crawler mechanism 2 and a second crawler mechanism 2 is a second crawler mechanism 2.

[0024] In some embodiments, the first crawler mechanism 1 and the second crawler mechanism 2 can adopt a crawler structure made of rubber material. On the one hand, it can increase the friction between the crawler and the stairs. On the other hand, the crawler structure made of rubber material can use crawler wheels with smaller diameters to reduce the thickness of the crawler mechanism, thereby lowering the center of gravity of the entire stair climbing machine and further improving the stability of the stair climbing machine.

[0025] In order to facilitate arranging the lower end surfaces of the first crawler mechanism 1 and the second crawler mechanism 2 on two mutually inclined planes, the second crawler mechanism 2 is at least partially arranged lower than the lower end surface of the first crawler mechanism 1 .

[0026] The first crawler mechanism 1 comprises a first crawler 1-1, two first crawler wheels 1-2 and a first crawler shoe 1-3 and a second crawler shoe 1-4 arranged in parallel. The first crawler wheel 1-2 is installed between the first crawler shoe 1-3 and the second crawler shoe 1-4, and the first crawler 1-1 is sleeved on the outer side of the first crawler wheel 1-2.

[0027] The second crawler mechanism 2 includes a second crawler 2-1, four second track wheels 2-5, and a third track shoe 2-6 and a fourth track shoe 2-7 arranged in parallel. The four second track wheels 2-5 are installed between the third track shoe 2-6 and the fourth track shoe 2-7, so that the second crawler 2-1 forms a quadrilateral structure.

[0028] The lower end surface of the second crawler 2-1 includes a first moving segment 2-2, a second moving segment 2-3, and a third moving segment 2-4. The first moving segment 2-2 and the third moving segment 2-4 are respectively arranged on both sides of the second moving segment 2-3. The first moving segment 2-2 is used to move on the horizontal plane of the stairs, and the second moving segment 2-3 is used to move on the positive corner of the stairs. When the stair climbing device moves on the horizontal plane, the second moving segment 2-3 is in contact with the ground, and the third moving segment 2-4 is used to contact with the vertical surface of the stairs to provide power for the second crawler 2-1 to climb upward. The first moving segment 2-2 is set below the lower end surface of the first crawler mechanism 1.

[0029] A second drive motor 2-8 is installed on the third track shoe 2-6. The second drive motor 2-8 is connected to the second track wheel 2-5 and is used to drive the second track wheel 2-5 to work.

[0030] The stair climbing device also includes a connecting frame 3 for connecting the first crawler mechanism 1 and the second crawler mechanism 2. A height difference is provided at both ends of the connecting frame 3 so that there is a certain height difference between the first crawler mechanism 1 and the second crawler mechanism 2 installed at both ends of the connecting frame 3, thereby making the first crawler mechanism 1 and the second crawler mechanism 2 relatively inclined.

[0031] In this embodiment, the first track shoe 1-3 of the first crawler mechanism 1 is connected to the connecting frame 3, and the third track shoe 2-6 of the second crawler mechanism 2 is fixedly connected to the connecting frame 3. In some optional embodiments, the third track shoe 2-6 is rotatably connected to the connecting frame 3.

[0032] At least two connecting beams 6 are provided between the first track shoes 1-3, and the seat 7 is swingably mounted on one of the connecting beams 6 via a rotating shaft. The driving cylinder 5 for controlling the swing of the seat 7 is swingably mounted on the other connecting beam 6, and the driving cylinder 5 is connected to the seat 7 via a rotating shaft.

[0033] Two first crawler mechanisms 1 are connected to both sides of the connecting frame 3, and two first drive motors 4 are installed on the connecting frame 3. The first drive motors 4 are respectively connected to one of the first crawler wheels 1-2 of the first crawler mechanism 1 to drive the first crawler mechanism 1 to work.

[0034] In this embodiment, each of the first crawler mechanism 1 and the second crawler mechanism 2 is equipped with a motor to realize the independent operation of each crawler mechanism. The turning and U-turn of the stair climbing mechanism can be realized by controlling the rotation speed of each motor.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A stair climbing device, the stair climbing device is used to move on stairs, characterized in that: It comprises a first crawler mechanism (1) and a second crawler mechanism (2) which are connected to each other, wherein the lower end surface of the second crawler mechanism (2) is arranged to be inclined relative to the lower end surface of the first crawler mechanism (1), so that the ends of the first crawler mechanism (1) and / or the second crawler mechanism (2) abut against the stairs; The second crawler mechanism (2) comprises a second crawler (2-1), the lower end surface of the second crawler (2-1) comprising a first moving section (2-2) for moving on a horizontal plane of the stairs and a second moving section (2-3) for moving on a positive corner of the stairs, the first moving section (2-2) being arranged below the lower end surface of the first crawler mechanism (1).

2. A stair climbing device according to claim 1, characterized in that: The second crawler mechanism (2) is at least partially lower than the lower end surface of the first crawler mechanism (1).

3. A stair climbing device according to claim 1, characterized in that: The lower end surface of the second crawler (2-1) also includes a third moving section (2-4), and the first moving section (2-2) and the third moving section (2-4) are respectively arranged on both sides of the second moving section (2-3).

4. A stair climbing device according to claim 1, characterized in that: The stair climbing device further comprises a connecting frame (3) for connecting the first crawler mechanism (1) and the second crawler mechanism (2); a height difference is provided at both ends of the connecting frame (3) so that the first crawler mechanism (1) and the second crawler mechanism (2) are arranged to be relatively inclined.

5. A stair climbing device according to claim 4, characterized in that: Two first crawler mechanisms (1) are respectively connected to the two sides of the connecting frame (3), and two first drive motors (4) are installed on the connecting frame (3), and the first drive motors (4) are respectively connected to the first crawler mechanisms (1).

6. A stair climbing device according to claim 4, characterized in that: The first crawler mechanism (1) comprises a first crawler (1-1), two first crawler wheels (1-2), and a first crawler plate (1-3) and a second crawler plate (1-4) arranged in parallel; the first crawler wheel (1-2) is installed between the first crawler plate (1-3) and the second crawler plate (1-4); the first crawler (1-1) is sleeved on the outside of the first crawler wheel (1-2); and the first crawler plate (1-3) is connected to a connecting frame (3).

7. A stair climbing device according to claim 6, characterized in that: A connecting beam (6) is provided between the first track shoes (1-3), and a seat (7) is swingably mounted on the connecting beam (6).

8. A stair climbing device according to claim 4, characterized in that: The second crawler mechanism (2) comprises four second crawler wheels (2-5) and a third crawler plate (2-6) and a fourth crawler plate (2-7) arranged in parallel; the four second crawler wheels (2-5) are installed between the third crawler plate (2-6) and the fourth crawler plate (2-7); and the third crawler plate (2-6) is connected to the connecting frame (3).

9. A stair climbing device according to claim 8, characterized in that: A second drive motor (2-8) is installed on the third track shoe (2-6), and the second drive motor (2-8) is connected to the second track wheel (2-5).

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