Telescopic mechanism

Abstract

The utility model belongs to the technical field of telescopic mechanisms, particularly relates to a telescopic mechanism, and aims to solve the problems that a hydraulic system in an existing telescopic mechanism is possibly influenced by factors such as temperature and pressure fluctuation, so that the positioning accuracy is reduced, and the existing telescopic mechanism is large in occupied space and not suitable for occasions with limited space. Comprising a telescopic mechanism body and a motor fixing seat. Through accurate control of the servo motor and the speed reducer and combination of accurate movement of the ball screw, the telescopic mechanism can ensure high-precision positioning of the tail end installation support in the single direction, and the positioning precision is crucial to application scenes needing accurate control and adjustment. Meanwhile, the combination of the servo motor and the speed reducer provides efficient power transmission, accurate rotation of the ball screw and stable movement of the ball screw nut are ensured, the response speed of the telescopic mechanism is increased through the transmission mode, and energy consumption and noise are reduced.

Description

Technical Field

[0001] The utility model relates to a telescopic mechanism, in particular to a telescopic mechanism, and belongs to the technical field of telescopic mechanisms. Background Art

[0002] As an important mechanical transmission device, telescopic mechanism is widely used in various engineering machinery (such as excavators, cranes, etc.), automation equipment (such as conveyor belts, handling robots, etc.) and transportation tools (such as cars, trains, etc.) to meet different working conditions and operation requirements. It is mainly used to change the length of the boom to obtain the required height or amplitude; the design principles of telescopic mechanism are diverse, including adjusting threads, telescopic arms, spring devices, and liquid or gas drives. These principles play a key role in the design of telescopic mechanism and affect the performance and stability of telescopic mechanism.

[0003] In the prior art, a hydraulic scissor lift disclosed in announcement number CN211813235U has a scissor-fork connecting rod mechanism arranged on a frame, and a hydraulic cylinder is used to control the distance between the two cross connecting rod ends. By designing the number of stages of the connecting rod mechanism, the connecting rod lifting distance reaches a corresponding multiple of the cylinder telescopic stroke to meet the lifting height requirement.

[0004] The above patent uses a hydraulic cylinder to control the distance between the two cross-link ends. However, in actual use, although the hydraulic system performs well in certain applications, it may be affected by factors such as temperature and pressure fluctuations, resulting in reduced positioning accuracy. At the same time, the above patent occupies a large space and is not suitable for occasions with limited space. Utility Model Content

[0005] The utility model provides a telescopic mechanism to solve the problem that the hydraulic system in the telescopic mechanism may be affected by factors such as temperature and pressure fluctuations, resulting in reduced positioning accuracy, and the above patent occupies a large space and is not suitable for occasions with limited space.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a telescopic mechanism, including a telescopic mechanism body and a motor fixing seat, the motor fixing seat is located on one side of the top of the telescopic mechanism body, and a servo motor and a reducer are fixedly installed on the other side of the motor fixing seat. The output ends of the servo motor and the reducer are fixedly connected to a ball screw, and the other end of the ball screw is fixedly installed with a ball screw fixing seat, and a ball screw nut is installed on the surface of the ball screw.

[0007] As a further solution of the utility model: the bottom of the motor fixing seat and the bottom of the ball screw nut are both hinged with connecting rods, multiple groups of connecting rods are hingedly connected, the multiple groups of connecting rods are staggeredly installed, and the multiple groups of connecting rods form a parallelogram structure.

[0008] As a further solution of the utility model: an end mounting bracket is installed at the end of the telescopic mechanism body, and the end mounting bracket has only one movement direction.

[0009] As a further solution of the utility model: a connecting rod fixing seat is hinged on one side of the connecting rod.

[0010] As a further solution of the utility model: the connecting rod realizes telescopic movement through the servo motor and the reducer, the rotation of the ball screw and the ball screw nut.

[0011] As a further solution of the utility model: the drive control of the servo motor and the reducer adopts a closed-loop control system, and the position information of the ball screw nut is fed back in real time to achieve precise control of the movement trajectory of the telescopic mechanism.

[0012] As a further solution of the utility model: the contact surfaces of the ball screw and the ball screw nut are coated with a wear-resistant coating.

[0013] The beneficial effects of the utility model are:

[0014] Through the precise control of the servo motor and reducer, combined with the precise movement of the ball screw, the telescopic mechanism can ensure the high-precision positioning of the end mounting bracket in a single direction. This positioning accuracy is crucial for application scenarios that require precise control and adjustment. At the same time, the combination of the servo motor and reducer provides efficient power transmission, ensuring the precise rotation of the ball screw and the smooth movement of the ball screw nut. This transmission method not only improves the response speed of the telescopic mechanism, but also reduces energy consumption and noise;

[0015] The parallelogram structure composed of multiple groups of connecting rods limits the unintended directional movement of the connecting rods, thereby ensuring the stability of the telescopic mechanism during movement. This design effectively prevents the shaking and deviation of the mechanism during the telescopic process, thereby improving the overall work efficiency and safety. Through reasonable layout and compact design, the telescopic mechanism reduces the overall size and weight while maintaining high performance and high telescopic ratio, which makes it easier to install and integrate into various equipment and systems. In summary, the telescopic mechanism solves the shortcomings and problems of existing telescopic mechanisms in positioning accuracy, structural stability, movement direction control, transmission efficiency, and design and maintenance through its unique design and high-precision control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a plan view of the telescopic mechanism body of the utility model;

[0018] Figure 3It is a schematic diagram of the structure of the telescopic mechanism body in a top view of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the telescopic mechanism body of the utility model from the side.

[0020] In the figure: 1. Telescopic mechanism body; 2. End mounting bracket; 3. Connecting rod fixing seat; 4. Connecting rod; 5. Ball screw nut; 6. Ball screw fixing seat; 7. Ball screw; 8. Motor fixing seat; 9. Servo motor and reducer. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1, as Figures 1 to 4 As shown, a telescopic mechanism includes a telescopic mechanism body 1 and a motor fixing seat 8, the motor fixing seat 8 is located on one side of the top of the telescopic mechanism body 1, and a servo motor and a reducer 9 are fixedly installed on the other side of the motor fixing seat 8, and the output ends of the servo motor and the reducer 9 are fixedly connected to a ball screw 7, and the other end of the ball screw 7 is fixedly installed with a ball screw fixing seat 6, and a ball screw nut 5 is installed on the surface of the ball screw 7; by starting the servo motor and the reducer 9 to drive the ball screw 7 to rotate, the ball screw nut 5 moves on the ball screw 7, thereby driving the connecting rod 4 to realize the telescopic movement, and the telescopic movement of the connecting rod 4 is transmitted to the equipment or tool that needs to be telescopic through the connecting rod fixing seat 3 and the end mounting bracket 2.

[0023] Embodiment 2. In addition to all the technical features of Embodiment 1, this embodiment also includes: connecting rods 4 are hinged at the bottom of the motor fixing base 8 and the bottom of the ball screw nut 5, multiple groups of connecting rods 4 are hingedly connected, multiple groups of connecting rods 4 are staggeredly installed, and multiple groups of connecting rods 4 form a parallelogram structure; wherein the connecting rods 4 are staggeredly installed under the motor fixing base 8 and the ball screw nut 5 to form a parallelogram structure, which limits the unexpected directional movement of the connecting rods 4.

[0024] An end mounting bracket 2 is installed at the end of the telescopic mechanism body 1. The end mounting bracket 2 has only one movement direction. The parallelogram structure composed of multiple groups of connecting rods 4 limits the unexpected movement of the connecting rods 4, thereby ensuring the stability of the telescopic mechanism during movement. This design effectively prevents the shaking and deviation of the mechanism during the telescopic process, thereby improving the overall work efficiency and safety.

[0025] A connecting rod fixing seat 3 is hinged on one side of the connecting rod 4 , and the connecting rod fixing seat 3 can ensure the stability and correct movement direction of the connecting rod 4 .

[0026] Embodiment three, in addition to all the technical features of embodiment one, this embodiment also includes: the connecting rod 4 realizes telescopic movement through the servo motor and reducer 9, the rotation of the ball screw 7 and the ball screw nut 5; the combination of the servo motor and the reducer 9 provides efficient power transmission, ensuring the precise rotation of the ball screw 7 and the smooth movement of the ball screw nut 5. This transmission method not only improves the response speed of the telescopic mechanism, but also reduces energy consumption and noise.

[0027] The drive control of the servo motor and the reducer 9 adopts a closed-loop control system, which realizes precise control of the motion trajectory of the telescopic mechanism by real-time feedback of the position information of the ball screw nut 5. Through the precise control of the servo motor and the reducer 9, combined with the precise movement of the ball screw 7, the telescopic mechanism can ensure high-precision positioning of the end mounting bracket 2 in a single direction. This positioning accuracy is crucial for application scenarios that require precise control and adjustment.

[0028] The contact surfaces of the ball screw 7 and the ball screw nut 5 are coated with a wear-resistant coating, which can reduce friction and wear and increase the service life of the telescopic mechanism.

[0029] When using the telescopic mechanism, the servo motor and the reducer 9 are started to drive the ball screw 7 to rotate, and the ball screw nut 5 moves on the ball screw 7, thereby driving the connecting rod 4 to realize telescopic movement. The telescopic movement of the connecting rod 4 is transmitted to the equipment or tool that needs to be telescoped through the connecting rod fixing seat 3 and the end mounting bracket 2; wherein the connecting rod 4 is staggeredly installed under the motor fixing seat 8 and the ball screw nut 5 to form a parallelogram structure, which limits the unexpected direction movement of the connecting rod 4; the drive control of the servo motor and the reducer 9 adopts a closed-loop control system, which realizes precise control of the movement trajectory of the telescopic mechanism by real-time feedback of the position information of the ball screw nut 5; through the precise control of the servo motor and the reducer 9, combined with the precise movement of the ball screw 7, the telescopic mechanism can ensure the high-precision positioning of the end mounting bracket 2 in a single direction. This positioning accuracy is very important for application scenarios that require precise control and adjustment. The combination of the machine and the reducer 9 provides efficient power transmission, ensuring the precise rotation of the ball screw 7 and the smooth movement of the ball screw nut 5. This transmission mode not only improves the response speed of the telescopic mechanism, but also reduces energy consumption and noise; the parallelogram structure composed of multiple groups of connecting rods 4 limits the unexpected directional movement of the connecting rods 4, thereby ensuring the stability of the telescopic mechanism during movement. This design effectively prevents the shaking and deviation of the mechanism during the telescopic process, thereby improving the overall work efficiency and safety; through reasonable layout and compact design, the telescopic mechanism reduces the overall size and weight while maintaining high performance and high telescopic ratio, which makes it easier to install and integrate into various equipment and systems; in summary, the telescopic mechanism solves the shortcomings and problems of existing telescopic mechanisms in positioning accuracy, structural stability, movement direction control, transmission efficiency, design and maintenance through its unique design and high-precision control.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A telescopic mechanism, comprising a telescopic mechanism body (1) and a motor fixing seat (8), characterized in that: The motor fixing seat (8) is located on one side of the top of the telescopic mechanism body (1); a servo motor and a reducer (9) are fixedly mounted on the other side of the motor fixing seat (8); the output ends of the servo motor and the reducer (9) are fixedly connected to a ball screw (7); the other end of the ball screw (7) is fixedly mounted on a ball screw fixing seat (6); and a ball screw nut (5) is mounted on the surface of the ball screw (7).

2. A telescopic mechanism according to claim 1, characterized in that: The bottom of the motor fixing seat (8) and the bottom of the ball screw nut (5) are both hingedly connected with connecting rods (4), and the multiple groups of connecting rods (4) are hingedly connected. The multiple groups of connecting rods (4) are staggeredly installed, and the multiple groups of connecting rods (4) form a parallelogram structure.

3. A telescopic mechanism according to claim 1, characterized in that: An end mounting bracket (2) is mounted at the end of the telescopic mechanism body (1); the end mounting bracket (2) has only one movement direction.

4. A telescopic mechanism according to claim 2, characterized in that: A connecting rod fixing seat (3) is hingedly connected to one side of the connecting rod (4).

5. A telescopic mechanism according to claim 2, characterized in that: The connecting rod (4) is able to achieve telescopic movement through the rotation of the servo motor and the reducer (9), the ball screw (7) and the ball screw nut (5).

6. A telescopic mechanism according to claim 1, characterized in that: The drive control of the servo motor and the reducer (9) adopts a closed-loop control system, and the position information of the ball screw nut (5) is fed back in real time to achieve precise control of the movement trajectory of the telescopic mechanism.

7. A telescopic mechanism according to claim 1, characterized in that: The contact surfaces of the ball screw (7) and the ball screw nut (5) are coated with a wear-resistant coating.

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