A two-degree-of-freedom mechanical telescopic arm

Abstract

The utility model relates to industrial automation equipment technical field, concretely relates to two degrees of freedom mechanical telescopic arm. The utility model provides two degrees of freedom mechanical telescopic arm, including support arm, with the bottom hinged base of support arm and with the fixed connection of support arm top support platform, both sides of base are hinged with both sides of support arm through lifting cylinder, the top of support arm is slidably connected with telescopic arm, and the top of telescopic arm is fixedly connected with support platform, and the bottom of telescopic arm is hinged with base through telescopic cylinder, and drive telescopic arm realizes telescopic. Two degrees of freedom mechanical telescopic arm provided by the utility model improves rigidity, directivity and installation adaptability through optimization structure design, satisfies the high-precision double degrees of freedom movement demand under multiple scenes.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation equipment technology, specifically to a two-degree-of-freedom mechanical telescopic arm. Background Technology

[0002] A two-degree-of-freedom (DOF) telescopic boom is a mechanical actuator that adjusts the spatial position of a target object through two degrees of freedom of motion (usually horizontal extension and tilt angle adjustment). It is widely used in industrial production line material handling, warehouse equipment cargo storage and retrieval, and precision instrument installation and positioning. Its core function is to endow the device with two independent motion dimensions through structural design to meet the operational needs under complex working conditions.

[0003] In the existing technology, traditional two-degree-of-freedom telescopic booms have the following main problems: First, the structural rigidity is insufficient. The connection between the support arm and the base is mostly a simple hinge, which is prone to deformation under long-term load, affecting the motion accuracy. Second, the guiding performance of the telescopic mechanism is poor. There is no effective limiting structure between the telescopic arm and the support arm, which is prone to telescopic deviation or jamming. Third, the installation adaptability is weak. The base structure is simple and it is difficult to quickly match different installation scenarios, which limits the versatility of the device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a two-degree-of-freedom mechanical telescopic arm. By optimizing the structural design, it improves rigidity, guidance, and installation adaptability, thereby meeting the high-precision two-degree-of-freedom motion requirements in various scenarios.

[0005] The technical solution provided by this utility model is a two-degree-of-freedom mechanical telescopic arm, including a support arm, a base hinged to the bottom of the support arm, and a support platform fixedly connected to the top of the support arm. The two sides of the base are hinged to the two sides of the support arm through lifting cylinders. A telescopic arm is slidably connected to the top of the support arm. The top of the telescopic arm is fixedly connected to the support platform, and the bottom of the telescopic arm is hinged to the base through a telescopic cylinder, thereby driving the telescopic arm to extend and retract.

[0006] As a preferred technical solution of this utility model, the base is U-shaped, and one side of the base is provided with a mounting plate for connection and fixing, and the middle of the mounting plate is provided with an opening for wiring.

[0007] As a preferred embodiment of this utility model, the hinge point between the lifting cylinder and the base is located at the end of the base away from the mounting plate.

[0008] As a preferred embodiment of this utility model, the support arm is a rectangular frame structure, and the top of the support arm is provided with a reinforcing frame to limit the telescopic arm.

[0009] As a preferred technical solution of this utility model, the reinforcing frame is provided with guide blocks on both sides inside, and self-lubricating wear-resistant bushings are embedded in the guide blocks. The telescopic arm is provided with corresponding guide grooves on both sides at the guide blocks.

[0010] As a preferred technical solution of this utility model, the hydraulic lines of the lifting cylinder and the telescopic cylinder are both integrated with hydraulic locks, which are used to lock the position when the cylinder stops moving to prevent accidental falling or retraction.

[0011] The advantages of this utility model compared with the prior art are as follows:

[0012] 1. High structural rigidity: The combination design of U-shaped base and rectangular frame support arm, combined with the hinge position of the lifting cylinder at the bottom away from the mounting plate, effectively disperses load stress, avoids deformation after long-term use, and improves motion accuracy and stability.

[0013] 2. High guiding accuracy: The reinforcing frame at the top of the support arm cooperates with the guide groove on the telescopic arm through the guide blocks on both sides. Combined with the low friction characteristics of the self-lubricating wear-resistant bushing, it can achieve precise horizontal guidance of the telescopic arm, reduce jamming and deviation, and is suitable for precision positioning scenarios.

[0014] 3. The hydraulic system is safe and reliable: The hydraulic lock integrated in the hydraulic pipeline can lock the position immediately when the oil cylinder stops, preventing accidental action caused by external interference or system leakage, and ensuring the safety and reliability of the operation process.

[0015] 4. Good installation adaptability: The mounting plate on one side of the base and the wiring opening in the middle facilitate quick fixation with different mounting bases (such as equipment racks, wall brackets, etc.) and meet the wiring layout requirements, expanding the application scenarios of the device. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a two-degree-of-freedom mechanical telescopic arm according to this utility model.

[0017] Figure 2 This is a side view of a two-degree-of-freedom mechanical telescopic arm according to the present invention.

[0018] As shown in the figure:

[0019] 1. Support arm; 2. Base; 3. Support platform; 4. Lifting cylinder; 5. Telescopic arm; 6. Telescopic cylinder; 7. Mounting plate; 8. Opening; 9. Reinforcing frame; 10. Guide groove. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1:

[0023] As per the instruction manual Figure 1-2 As shown, a two-degree-of-freedom mechanical telescopic arm includes a support arm 1, a base 2 hinged to the bottom of the support arm 1, and a support platform 3 fixedly connected to the top of the support arm 1. An angle sensor is provided at the hinge point between the support arm 1 and the base 2 to monitor the pitch angle of the support arm 1 in real time.

[0024] In this utility model, the base 2 is U-shaped, and one side of the base 2 is provided with a mounting plate 7 for connection and fixing. The middle of the mounting plate 7 is provided with an opening 8 for wiring. The two sides of the base 2 are hinged to the two sides of the support arm 1 through the lifting cylinder 4. The hinge point between the lifting cylinder 4 and the base 2 is located at the end of the base 2 away from the mounting plate 7.

[0025] In this utility model, a telescopic arm 5 is slidably connected to the top of the support arm 1. The top of the telescopic arm 5 is fixedly connected to the support platform 3, and the bottom of the telescopic arm 5 is hinged to the base 2 through a telescopic cylinder 6, so as to drive the telescopic arm 5 to extend and retract.

[0026] In this utility model, the support arm 1 is a rectangular frame structure, and the top of the support arm 1 is provided with a reinforcing frame 9 to limit the telescopic arm 5. A position sensor is installed on the reinforcing frame 9 to detect the extension position or limit position of the telescopic arm 5. At the same time, guide blocks are provided on both sides inside the reinforcing frame 9, and self-lubricating wear-resistant bushings are embedded in the guide blocks. Corresponding guide grooves 10 are provided on both sides of the telescopic arm 5 at the guide blocks. The guide blocks inside the reinforcing frame 9 and the guide grooves 10 on the telescopic arm 5 form a sliding pair. Combined with the self-lubricating properties of the self-lubricating wear-resistant bushings, the coefficient of friction is reduced, ensuring the straightness and accuracy of the telescopic movement and avoiding jamming or deviation. In addition, the guide blocks are installed on the reinforcing frame 9 by adjustable bolts, allowing the gap between the guide blocks and the guide grooves 10 to be adjusted.

[0027] In this utility model, hydraulic locks are integrated into the hydraulic lines of both the lifting cylinder 4 and the telescopic cylinder 6 to lock the position when the cylinder stops moving, preventing accidental falling or retraction.

[0028] Working principle

[0029] 1. Pitch Angle Adjustment (First Degree of Freedom): The lifting cylinder 4 serves as the driving element. The extension and retraction of its piston rod is converted into the rotational motion of the support arm 1 around the base 2 through the hinge point, thereby realizing the pitch angle adjustment of the supporting platform 3. The structural design of the U-shaped base 2 increases the contact area with the mounting base. Combined with the cylinder hinge position away from the mounting plate 7, it makes the load stress evenly distributed and improves the structural rigidity.

[0030] 2. Horizontal telescopic adjustment (second degree of freedom): The telescopic cylinder 6 serves as the driving element, and the extension and retraction of its piston rod directly pushes the telescopic arm 5 to move horizontally along the guide groove 10 at the top of the support arm 1. The guide block inside the reinforcing frame 9 and the guide groove 10 on the telescopic arm 5 form a sliding pair. Combined with the self-lubricating properties of the self-lubricating wear-resistant bushing, the coefficient of friction is reduced, ensuring the straightness and accuracy of the telescopic movement and avoiding jamming or deviation.

[0031] 3. Position locking and safety assurance: The hydraulic lock integrated in the hydraulic lines of the lifting cylinder 4 and the telescopic cylinder 6 is a one-way valve structure. When the cylinder stops moving, the hydraulic lock automatically closes, cuts off the oil circuit and locks the piston position, preventing the cylinder from accidentally retracting or falling due to system pressure fluctuations or external interference, thus ensuring the safety and position accuracy of the operation process.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A two-degree-of-freedom mechanical telescopic arm, comprising a support arm (1), a base (2) hinged to the bottom of the support arm (1), and a support platform (3) fixedly connected to the top of the support arm (1), characterized in that: The two sides of the base (2) are hinged to the two sides of the support arm (1) through the lifting cylinder (4); The top of the support arm (1) is slidably connected to a telescopic arm (5). The top of the telescopic arm (5) is fixedly connected to the support platform (3), and the bottom of the telescopic arm (5) is hinged to the base (2) through a telescopic cylinder (6), thereby driving the telescopic arm (5) to extend and retract.

2. The two-degree-of-freedom mechanical telescopic arm according to claim 1, characterized in that: The base (2) is U-shaped, and one side of the base (2) is provided with a mounting plate (7) for connection and fixing, and the middle of the mounting plate (7) is provided with an opening (8) for wiring.

3. A two-degree-of-freedom mechanical telescopic arm according to claim 2, characterized in that: The hinge point between the lifting cylinder (4) and the base (2) is located at the end of the base (2) away from the mounting plate (7).

4. A two-degree-of-freedom mechanical telescopic arm according to claim 1, characterized in that: The support arm (1) is a rectangular frame structure, and the top of the support arm (1) is provided with a reinforcing frame (9) to limit the telescopic arm (5).

5. A two-degree-of-freedom mechanical telescopic arm according to claim 4, characterized in that: The reinforcing frame (9) has guide blocks on both sides inside, and self-lubricating wear-resistant bushings are embedded on the guide blocks. The telescopic arm (5) has corresponding guide grooves (10) on both sides at the guide blocks.

6. A two-degree-of-freedom mechanical telescopic arm according to claim 1, characterized in that: Hydraulic locks are integrated into the hydraulic lines of both the lifting cylinder (4) and the telescopic cylinder (6) to lock the position when the cylinder stops moving, preventing accidental falling or retraction.

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