Lifting mechanism for robot

Abstract

The lifting mechanism for the robot comprises a lifting outer rod, a lifting inner rod, a driving device, a plurality of first sliding parts and a plurality of second sliding parts, the lower end of the lifting outer rod is connected with a robot body, and the lifting inner rod is embedded in the lifting outer rod and can slide relative to the lifting outer rod. The driving device is arranged in the lifting inner rod and used for driving the lifting inner rod to move relative to the lifting outer rod, the first sliding parts are arranged on the outer surface of the lower portion of the lifting inner rod, the second sliding parts are arranged on the inner surface of the upper portion of the lifting outer rod, and the first sliding parts make contact with the inner surface of the lifting outer rod in a sliding mode. The second sliding part is in contact sliding with the outer surface of the lifting inner rod. The lifting mechanism further comprises a top plate, a bottom plate and an elastic cable. The lifting mechanism is simple in structure and high in stability, and the problems that in the prior art, a lifting mechanism is prone to shaking and poor in guidance quality are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of robots, in particular to a lifting mechanism for a robot. Background Art

[0002] The existing robot pan-tilt lifting device usually consists of a single rod body and an electric push rod. Although this structure can realize the basic lifting function, it has certain limitations. For example, a robot pan-tilt lifting mechanism disclosed in Chinese utility model patent CN219510522U includes a lifting outer rod, a lifting inner rod and an electric push rod. The lifting outer rod is fixedly connected to the robot body, the lifting inner rod is connected to the pan-tilt through the pan-tilt base, and the lifting inner rod and the pan-tilt are lifted and lowered by the electric push rod. This design solves the problem of easy damage of the electric push rod to a certain extent, and by setting a universal ball, a sliding connection is achieved between the lifting inner rod and the lifting outer rod, so that the pan-tilt lifting is more stable.

[0003] However, the designs in the prior art still have many deficiencies. For example, the lifting inner rod and the lifting outer rod are connected by a universal ball sliding connection. Although the friction coefficient is small, its guidance and stability are insufficient, which causes the lifting inner rod to easily deviate during the lifting process, affecting the stability and accuracy of the pan / tilt. Especially when subjected to lateral torque, the lifting inner rod and the lifting outer rod are weak in resisting lateral forces, causing the top equipment to shake easily. The lifting inner rod and the lifting outer rod have poor lateral torque resistance, which easily causes the top equipment to shake during the operation of the robot, affecting the normal operation and life of the equipment. In addition, the layout of the lifting inner rod, the lifting outer rod and the electric push rod in the prior art is not compact enough and occupies a large space, which affects the overall design and functional layout of the robot and increases the complexity of the overall structure and the difficulty of processing. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a lifting mechanism for a robot to solve the problems of the existing robot pan-tilt lifting device having a non-compact structure, insufficient guidance, poor lateral force resistance and high processing complexity.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A lifting mechanism for a robot, comprising:

[0007] A lifting outer rod, the lower end of which is connected to the robot body;

[0008] The lifting inner rod is nested in the lifting outer rod and can slide relative to the lifting outer rod;

[0009] A driving device, disposed in the lifting inner rod, for driving the lifting inner rod to move relative to the lifting outer rod;

[0010] A plurality of first sliding components are arranged on the lower outer surface of the lifting inner rod;

[0011] A plurality of second sliding components are arranged on the upper inner surface of the lifting outer rod;

[0012] The first sliding component contacts and slides with the inner surface of the lifting outer rod, and the second sliding component contacts and slides with the outer surface of the lifting inner rod.

[0013] Preferably, it also includes:

[0014] A top plate, connected to the upper end of the lifting inner rod, for mounting functional components of the robot;

[0015] The bottom plate is connected to the lower end of the lifting outer rod and is used to be connected to the robot body.

[0016] Preferably, the lifting inner rod and the lifting outer rod are both hollow rod bodies with polygonal cross-sections.

[0017] Preferably, the first sliding component is arranged on each edge of the lower outer surface of the lifting inner rod, and the second sliding component is arranged on each edge of the upper inner surface of the lifting outer rod.

[0018] Preferably, the first sliding component and the second sliding component are sliding blocks, and the sliding blocks are made of a material with a low friction coefficient and is resistant to wear.

[0019] Preferably, it further comprises an elastic cable, which is arranged in the inner lifting rod, one end of which is fixed to the upper end of the inner lifting rod, and the other end of which is fixed to the lower end of the outer lifting rod.

[0020] Preferably, the driving device is an electric push rod, the lower end of which is fixedly connected to the lower end of the lifting outer rod, and the upper end of which is fixedly connected to the upper end of the lifting inner rod.

[0021] The technical effects that can be achieved by the utility model include the following:

[0022] 1. By arranging multiple first sliding components on the lower outer surface of the inner rod and multiple second sliding components on the upper inner surface of the outer rod, the first sliding components are contacted and slid with the inner surface of the outer rod, and the second sliding components are contacted and slid with the outer surface of the inner rod, forming a double guiding and supporting structure, which significantly improves the stability and guiding performance of the lifting mechanism, and effectively solves the problem in the prior art that the inner rod is prone to deviation during the lifting process, affecting the stability and accuracy of the pan-tilt head; at the same time, it also enhances the ability of the entire mechanism to resist lateral torque and reduces the shaking of the top equipment.

[0023] 2. By placing the drive device inside the inner rod, a more compact structural layout is achieved. This design not only effectively utilizes the internal space, but also reduces the volume of the entire lifting mechanism, solving the problem of the inner rod, outer rod and electric push rod being not compactly arranged and occupying a large space in the prior art. This compact design is conducive to reducing the overall weight and volume of the robot, and improving the flexibility and applicability of the robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the top structure of the lifting mechanism for the robot in Example 1;

[0025] Figure 2 This is a schematic diagram of the internal structure of the driving device of the lifting mechanism for the robot in Example 1;

[0026] Figure 3 This is a schematic diagram of the bottom structure of the lifting mechanism for the robot in Example 1;

[0027] Figure 4 This is a schematic structural diagram of the robot lifting mechanism in the extended state in Example 1;

[0028] Figure 5 This is a schematic structural diagram of the robot lifting mechanism in the non-extended state in Example 1.

[0029] The above-mentioned figure markings are: 1. lifting outer rod; 2. lifting inner rod; 3. driving device; 31. motor; 32. motor base; 33. push rod seat; 34. push rod; 4. first sliding component; 5. second sliding component; 6. top plate; 7. bottom plate; 8. elastic cable; 9. fixing block. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and examples, but these specific implementation schemes do not limit the protection scope of the present invention in any way.

[0031] Example 1

[0032] like Figure 1-5 As shown, the utility model provides a lifting mechanism for a robot, comprising a lifting outer rod 1, a lifting inner rod 2, a driving device 3, a first sliding component 4, a second sliding component 5, a top plate 6 and a bottom plate 7.

[0033] The lifting outer rod 1 is a hollow rod with a square cross section, and its lower end is connected to the robot body through a bottom plate 7. The bottom plate 7 can be made of metal material and fixed to the robot body by bolts or welding to provide a stable support for the entire lifting mechanism.

[0034] The lifting inner rod 2 is also a hollow rod body with a square cross section, which is slightly smaller than the lifting outer rod 1 and can be nested in the lifting outer rod 1 and slide relative to the lifting outer rod 1. The upper end of the lifting inner rod 2 is connected to a top plate 6, which is used to install various functional components of the robot, such as a camera, a pan / tilt, an operating arm or various sensors.

[0035] The driving device 3 is arranged in the lifting inner rod 2, and is used to drive the lifting inner rod 2 to move relative to the lifting outer rod 1. In this embodiment, the driving device 3 is an electric push rod, including a motor 31, a motor base 32, a push rod seat 33 and a push rod 34. The lower end of the electric push rod 3 (i.e., the motor base 32) is fixedly connected to the bottom plate 7 and the motor base is reinforced by the fixing block 9, and the upper end (i.e., the top of the push rod 34) is fixedly connected to the top plate 6. When the motor 31 is working, it can drive the push rod 34 to move relative to the push rod seat 33, thereby realizing the lifting of the lifting inner rod 2.

[0036] A plurality of first sliding components 4 are arranged on the lower outer surface of the lifting inner rod 2, and specifically, two first sliding components 4 are arranged on each of the four sides of the lower outer surface of the lifting inner rod 2. A plurality of second sliding components 5 are arranged on the upper inner surface of the lifting outer rod 1, and similarly, two second sliding components 5 are arranged on each of the four sides of the upper inner surface of the lifting outer rod 1.

[0037] The first sliding component 4 and the second sliding component 5 are both sliding blocks, and are made of a low friction coefficient, wear-resistant material (such as polyoxymethylene). During the lifting process, the first sliding component 4 slides in contact with the inner surface of the lifting outer rod 1, and the second sliding component 5 slides in contact with the outer surface of the lifting inner rod 2. This design can not only reduce friction and improve the smoothness of lifting, but also provide a good guiding effect, effectively preventing the lifting inner rod 2 from shaking or deflecting during the lifting process.

[0038] This embodiment further includes an elastic cable 8, which is disposed in the lifting inner rod 2. One end of the elastic cable 8 is fixed to the upper end of the lifting inner rod 2 (i.e., the top plate 6), and the other end is fixed to the lower end of the lifting outer rod 1 (i.e., the bottom plate 7). In this embodiment, the elastic cable 8 is in a spiral shape, which can be extended or shortened as the lifting inner rod 2 is raised or lowered, and is used to connect the power supply or signal line of the top device.

[0039] In addition, a plurality of fixing blocks 9 are provided in the four corners of the upper end of the lifting inner rod 2 for assisting the push rod seat.

[0040] The working principle of this embodiment is as follows: when it is necessary to raise the functional components of the robot, the motor 31 is started, driving the push rod 34 to move upward, and the push rod 34 pushes the top plate 6 and the lifting inner rod 2 to move upward. At this time, the first sliding component 4 slides upward along the inner wall of the lifting outer rod 1, and the second sliding component 5 slides downward along the outer wall of the lifting inner rod 2, together providing a stable guiding effect for the lifting inner rod 2. When the lifting inner rod 2 rises to a predetermined height, the motor 31 stops working, and the functional components are at a higher position at this time, and their working range can be expanded. When it is necessary to lower the functional components, the motor 31 runs in the reverse direction, driving the lifting inner rod 2 to descend until it returns to the initial position.

[0041] It should be noted that the lifting inner rod 2 and the lifting outer rod 1 in this embodiment are both made of aluminum alloy, which is light and has sufficient strength. In addition, by adjusting the stroke of the electric push rod 3, the working height of the top plate 6 can be flexibly adjusted to meet the use requirements in different scenarios.

[0042] The lifting mechanism of the utility model has a simple structure, is easy to process and assemble, and has a low cost. More importantly, through the ingenious design and arrangement of the sliding parts, the problem of easy shaking and poor stability of the lifting mechanism in the prior art is effectively solved, and the working accuracy and reliability of the robot's functional components are significantly improved.

[0043] The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Any innovative improvement or replacement based on the present invention shall fall within the scope of the claims of the present invention. At the same time, the various parameters, materials, and processes mentioned in the above embodiments are not exclusive. Without departing from the technical essence of the present invention, a person of ordinary skill in the art may make various alternatives, and these alternatives shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A lifting mechanism for a robot, characterized in that: include: A lifting outer rod, the lower end of which is connected to the robot body; The lifting inner rod is nested in the lifting outer rod and can slide relative to the lifting outer rod; A driving device, disposed in the lifting inner rod, for driving the lifting inner rod to move relative to the lifting outer rod; A plurality of first sliding components are arranged on the lower outer surface of the lifting inner rod; A plurality of second sliding components are disposed on the upper inner surface of the lifting outer rod; The first sliding component contacts and slides with the inner surface of the lifting outer rod, and the second sliding component contacts and slides with the outer surface of the lifting inner rod.

2. The robot lifting mechanism according to claim 1, characterized in that: Also includes: A top plate, connected to the upper end of the lifting inner rod, for mounting functional components of the robot; The bottom plate is connected to the lower end of the lifting outer rod and is used to be connected to the robot body.

3. The robot lifting mechanism according to claim 1, characterized in that: The inner lifting rod and the outer lifting rod are both hollow rod bodies with polygonal cross sections.

4. The robot lifting mechanism according to claim 3, characterized in that: The first sliding component is arranged on each edge of the lower outer surface of the lifting inner rod, and the second sliding component is arranged on each edge of the upper inner surface of the lifting outer rod.

5. The robot lifting mechanism according to claim 1, characterized in that: The first sliding component and the second sliding component are sliders, and the sliders are made of a material with a low friction coefficient and is wear-resistant.

6. The robot lifting mechanism according to claim 1, characterized in that: It also includes an elastic cable, which is arranged in the lifting inner rod, one end of the elastic cable is fixed to the upper end of the lifting inner rod, and the other end is fixed to the lower end of the lifting outer rod.

7. The robot lifting mechanism according to claim 1, characterized in that: The driving device is an electric push rod, the lower end of which is fixedly connected to the lower end of the lifting outer rod, and the upper end of which is fixedly connected to the upper end of the lifting inner rod.

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