Robot folding and unfolding mechanical arm

Abstract

The utility model belongs to the technical field of robots, and particularly relates to a robot folding and unfolding mechanical arm which comprises a fixing frame and an installation base installed on the fixing frame. Extension arms are movably arranged at the left end and the right end of the bottom of the fixing frame through first pin shafts, hydraulic cylinders are movably arranged at the left end and the right end of the top of the fixing frame through second pin shafts, shaft seats are arranged on the extension arms, and the fixing frame is made of high-strength aluminum alloy materials and designed with an I-shaped section, so that the structural strength and stability of the mechanical arm are effectively improved; the mechanical arm can bear large loads, and the service life of the mechanical arm is prolonged. And a plurality of mounting holes of different specifications are formed in the mounting seat, so that the adaptability of the mechanical arm to driving motors and control modules of different models is enhanced, and flexible configuration according to actual requirements is facilitated. And the surface of the pin shaft is plated with an anti-rust layer and is provided with a self-lubricating bearing, so that the frictional resistance is reduced, the abrasion of parts is reduced, and the movement flexibility and reliability of the mechanical arm are improved.

Description

Technical Field

[0001] This utility model belongs to the field of robotics technology, specifically relating to a robotic arm that can extend and retract. Background Technology

[0002] In robotic operations, robotic arms are crucial execution components. However, existing robotic arms have certain shortcomings in terms of structural strength, stability, flexibility, and adaptability to diverse operational needs. For example, some robotic arms lack sufficient structural strength, making them prone to deformation under prolonged use or heavy loads; the extension and retraction control of some robotic arms is not precise enough to meet the accuracy requirements of specific tasks; and some robotic arms are difficult to adapt to different drive motors, control modules, and end effectors, limiting their application range. Therefore, there is a need to design a robotic arm with a reasonable structure and excellent performance for robot extension and retraction. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a robotic arm that features high structural strength, good stability, precise extension and retraction control, and strong adaptability, thus meeting diverse operational needs.

[0004] A robotic arm for extending and retracting includes a fixed frame and a mounting base mounted on the fixed frame. Extending arms are movably mounted on the left and right ends of the bottom of the fixed frame via a first pin, and hydraulic cylinders are movably mounted on the left and right ends of the top of the fixed frame via a second pin. A bearing seat is mounted on the extending arm, and the bearing seat is movably connected to the universal joint of the hydraulic cylinder via a third pin.

[0005] Furthermore, the fixing frame is made of high-strength aluminum alloy, and the cross-sectional shape of the fixing frame is I-shaped to improve structural strength and stability.

[0006] Furthermore, the mounting base has multiple mounting holes of different sizes to accommodate different models of drive motors and control modules.

[0007] Furthermore, the surfaces of pin one, pin two, and pin three are all coated with an anti-rust layer, and self-lubricating bearings are provided between the pins and the corresponding connecting parts to reduce frictional resistance and improve the service life of the robotic arm.

[0008] Furthermore, the hydraulic cylinder is connected to a pressure sensor and a flow control valve. The pressure sensor is used to monitor the pressure inside the hydraulic cylinder in real time, and the flow control valve is used to adjust the flow rate of the hydraulic oil to precisely control the extension and retraction speed of the extension arm.

[0009] Furthermore, a limit switch is provided on the bearing seat. When the extension arm extends or retracts to its limit position, the limit switch is triggered, causing the hydraulic cylinder to stop working and preventing the robotic arm from being damaged due to overextension or retraction.

[0010] Furthermore, the end of the extendable arm is provided with a detachable connection interface, through which different types of end effectors can be installed to meet diverse operational needs.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The mounting frame is made of high-strength aluminum alloy and features an I-shaped cross-section design, which effectively improves the structural strength and stability of the robotic arm, enabling it to withstand larger loads and extend its service life.

[0013] The mounting base has multiple mounting holes of different sizes, which enhances the adaptability of the robotic arm to different types of drive motors and control modules, and facilitates flexible configuration according to actual needs.

[0014] The pin shaft is coated with an anti-rust layer and equipped with a self-lubricating bearing, which reduces frictional resistance, minimizes component wear, and improves the flexibility and reliability of the robotic arm's movement.

[0015] The hydraulic cylinder is connected to a pressure sensor and a flow control valve, which can precisely control the extension and retraction speed of the telescopic arm to meet the accuracy requirements of different operations.

[0016] Limit switches are installed on the shaft to prevent damage to the robotic arm due to overextension or retraction, thereby improving the safety and stability of the robotic arm.

[0017] The extension arm has a detachable connection interface at its end, which facilitates the installation of different types of end effectors, enabling the robotic arm to adapt to diverse operational needs and expanding its application range. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the unfolded structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the retracted state structure of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 4 for Figure 1 A front view structural diagram;

[0023] Figure 5 for Figure 2 A front view structural diagram;

[0024] In the picture:

[0025] 1. Fixed frame; 2. Mounting base; 3. Pin 1; 4. Extension arm; 5. Pin 2; 6. Hydraulic cylinder; 7. Shaft seat; 8. Pin 3; 9. Hydraulic cylinder universal joint. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] like Figure 1-5 As shown;

[0029] A robot that extends and retracts its robotic arm.

[0030] This implementation plan addresses the technical problems existing in the prior art, such as those disclosed in the background section above: "In robot operation scenarios, robotic arms are important execution components. Existing robotic arms have certain shortcomings in terms of structural strength, stability, flexibility, and adaptability to different operational needs. For example, some robotic arms have insufficient structural strength and are prone to deformation under prolonged use or heavy loads; the extension and retraction control of some robotic arms is not precise enough, making it difficult to meet the motion accuracy requirements of specific operations; and some robotic arms are difficult to adapt to different drive motors, control modules, and end effectors, limiting their application range." In practical terms, this problem is clearly a real and difficult-to-solve issue. Therefore, to solve this technical problem, a robot extension and retraction robotic arm is provided.

[0031] like Figure 1-5 As shown in the figure;

[0032] Based on the above, a robot arm retracting and extending includes a fixed frame 1 and a mounting base 2 mounted on the fixed frame 1. The bottom left and right ends of the fixed frame 1 are movably connected to the extension arm 4 via a first pin 3. The top left and right ends of the fixed frame 1 are movably connected to the hydraulic cylinder 6 via a second pin 5. The extension arm 4 is provided with a bearing 7, and the bearing 7 is movably connected to the universal joint 9 of the hydraulic cylinder 6 via a third pin 8.

[0033] The fixing frame 1 is made of high-strength aluminum alloy, and the cross-sectional shape of the fixing frame 1 is I-shaped to improve the structural strength and stability.

[0034] Mounting base 2 has multiple mounting holes of different sizes to accommodate different models of drive motors and control modules.

[0035] The surfaces of pin 1 (3), pin 2 (5), and pin 3 (8) are all coated with an anti-rust layer, and self-lubricating bearings are provided between the pins and the corresponding connecting parts to reduce frictional resistance and improve the service life of the robotic arm.

[0036] The hydraulic cylinder 6 is connected to a pressure sensor and a flow control valve. The pressure sensor is used to monitor the pressure inside the hydraulic cylinder 6 in real time, and the flow control valve is used to regulate the flow of hydraulic oil in order to precisely control the extension and retraction speed of the extension arm 4.

[0037] A limit switch is provided on the bearing 7. When the extension arm 4 extends or retracts to its limit position, the limit switch is triggered, causing the hydraulic cylinder 6 to stop working and preventing the robotic arm from being damaged due to overextension or retraction.

[0038] The end of the extension arm 4 is equipped with a detachable connection interface, through which different types of end effectors can be installed to meet diverse operational needs.

[0039] I. Component Installation

[0040] First, mount the mounting base 2 onto the fixed frame 1. The mounting base 2 has multiple mounting holes of different sizes, allowing for the selection of appropriate drive motors and control modules according to actual needs, thus enabling the driving and control of the robotic arm.

[0041] Then, the extension arm 4 is movably installed at the left and right ends of the bottom of the fixed frame 1 via pin 3, and the hydraulic cylinder 6 is movably installed at the left and right ends of the top of the fixed frame 1 via pin 5. The bearing 7 on the extension arm 4 is movably connected to the universal joint 9 of the hydraulic cylinder 6 via pin 8.

[0042] II. Work Process

[0043] When the robotic arm needs to be extended, the control module controls the flow control valve to regulate the flow of hydraulic oil into hydraulic cylinder 6, causing the piston rod of hydraulic cylinder 6 to extend. This extends the piston rod, which, through the universal joint 9 and the bearing 7, drives the extension arm 4 to rotate outward around pin 3, thus achieving the extension action. During the extension process, a pressure sensor monitors the pressure inside hydraulic cylinder 6 in real time to ensure the pressure remains within a safe range. When the extension arm 4 reaches its limit position, the limit switch on bearing 7 is triggered, stopping hydraulic cylinder 6 and preventing over-extension.

[0044] When the robotic arm needs to retract, the control module controls the flow control valve to adjust the flow of hydraulic oil, causing the piston rod of hydraulic cylinder 6 to retract and drive the extension arm 4 to rotate inward around pin 3, thus achieving the retraction action. Similarly, during the retraction process, the pressure sensor monitors the pressure in real time. When the extension arm 4 retracts to its limit position, the limit switch is triggered, causing hydraulic cylinder 6 to stop working and preventing over-retraction.

[0045] III. Replacement of the end effector

[0046] Depending on the different operational needs, different types of end effectors, such as grippers, suction cups, and spray guns, can be installed through the detachable connection interface at the end of the extension arm 4 to complete diverse operational tasks such as gripping, adsorption, and spraying.

[0047] In summary, the robotic arm of this invention, through reasonable structural design and component configuration, achieves advantages such as high structural strength, good stability, precise extension and retraction control, and strong adaptability, and can meet diverse operational needs.

[0048] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A robotic stowable manipulator arm, comprising: It includes a fixed frame (1) and a mounting base (2) installed on the fixed frame (1). The left and right ends of the bottom of the fixed frame (1) are movably provided with extension arms (4) through a first pin (3). The left and right ends of the top of the fixed frame (1) are movably provided with hydraulic cylinders (6) through a second pin (5). The extension arm (4) is provided with a bearing seat (7). The bearing seat (7) is movably connected to the universal joint (9) of the hydraulic cylinder (6) through a third pin (8).

2. The robotic pick-and-place robotic arm of claim 1, wherein, The fixing frame (1) is made of high-strength aluminum alloy, and the cross-sectional shape of the fixing frame (1) is I-shaped to improve the structural strength and stability.

3. The robotic pick-and-place robotic arm of claim 1, wherein: The mounting base (2) has multiple mounting holes of different sizes to accommodate different types of drive motors and control modules.

4. The robotic pick-and-place robotic arm of claim 1, wherein: The surfaces of the first (3), second (5) and third (8) pins are all coated with an anti-rust layer, and self-lubricating bearings are provided between the pins and the corresponding connecting parts to reduce frictional resistance and improve the service life of the robotic arm.

5. The robotic lawn mower of claim 1, wherein: The hydraulic cylinder (6) is connected to a pressure sensor and a flow control valve. The pressure sensor is used to monitor the pressure inside the hydraulic cylinder (6) in real time, and the flow control valve is used to adjust the flow rate of the hydraulic oil in order to precisely control the extension and retraction speed of the extension arm (4).

6. The robotic lawn mower of claim 1, wherein: A limit switch is provided on the bearing seat (7). When the extension arm (4) extends or retracts to the limit position, the limit switch is triggered, causing the hydraulic cylinder (6) to stop working, preventing the robotic arm from being damaged due to overextension or retraction.

7. The robotic lawn mower of claim 1, wherein: The end of the extension arm (4) is provided with a detachable connection interface, through which different types of end effectors can be installed to meet diverse operational needs.

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