Telescopic rotating shaft

Abstract

The utility model discloses a telescopic rotating shaft, and belongs to the technical field of rotating shafts. Comprising a shaft body and a reinforcing part, the shaft body comprises a main shaft and a secondary shaft, a cavity is formed in the main shaft, a hole is formed in the bottom end of the main shaft and communicated with the cavity, one end of the secondary shaft penetrates through the hole and slides in the cavity, a threaded rod is arranged in the cavity, the secondary shaft and the threaded rod are in threaded meshing connection, and a driving part is further arranged in the cavity. The driving piece drives the threaded rod to rotate, and a limiting piece is arranged in the cavity and limits rotation of the secondary shaft. The reinforcing piece comprises a reinforcing sleeve sliding on the outer side of the secondary shaft, and the reinforcing sleeve is connected with the main shaft; according to the telescopic rotating shaft, the problems that an existing telescopic rotating shaft is complex in telescopic structure, high in cost and difficult to maintain, and transmission stability and reliability are affected by telescopic clamping can be solved.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft technology, specifically a telescopic rotating shaft. Background Technology

[0002] In mechanical transmission systems, it is often necessary for the rotating shaft to be able to extend and retract axially while transmitting power, in order to adapt to different working conditions and space requirements.

[0003] Existing telescopic rotary shafts have some shortcomings. Some telescopic rotary shafts have complex telescopic structure designs, resulting in high manufacturing costs and difficult maintenance; others are prone to jamming during telescopic movement, affecting the smoothness and reliability of transmission. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic rotating shaft to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A telescopic rotating shaft includes a shaft body and a reinforcing member.

[0007] Furthermore, the shaft body includes a main shaft and a secondary shaft. The main shaft has an internal cavity and an opening at its bottom end, which communicates with the cavity. One end of the secondary shaft passes through the opening and slides within the cavity. A threaded rod is located inside the cavity, and the secondary shaft and the threaded rod are threadedly connected. A driving component is also located within the cavity, driving the threaded rod to rotate. A limiting component is located within the cavity, restricting the rotation of the secondary shaft. The reinforcing component includes a reinforcing sleeve that slides outside the secondary shaft and is connected to the main shaft. The telescopic function is achieved through simple threaded transmission, resulting in a relatively simple structure and reduced manufacturing costs. Simultaneously, the limiting component restricts the rotation of the secondary shaft, ensuring that it only moves axially, avoiding jamming caused by rotation during telescopic movement, and guaranteeing the smoothness and reliability of the transmission.

[0008] Furthermore, the driving component is a motor, which is mounted at the top of the cavity. The axes of the motor's output shaft, threaded rod, main shaft, cavity, and secondary shaft are all on the same straight line. This layout makes power transmission more direct and stable, reduces additional wear and energy loss caused by inconsistent axes, and improves the working efficiency of the rotating shaft.

[0009] Furthermore, the limiting component consists of four sets of circumferentially distributed limiting strips at equal intervals on the cavity wall, and four sets of circumferentially distributed limiting grooves at equal intervals on the outer side of the secondary shaft. The limiting strips slide within the limiting grooves. Through the cooperation of the limiting strips and the limiting grooves, not only can the rotation of the secondary shaft be effectively restricted, but this sliding connection method can also provide a good guiding effect for the axial movement of the secondary shaft, further ensuring the smoothness of the extension and retraction process.

[0010] Furthermore, the length of the limiting groove is less than the length of the secondary shaft, and one end of the limiting groove is flush with the top of the secondary shaft. This can ensure the limiting function while avoiding the limiting groove being too long, which would increase the processing difficulty and cost. It also provides more flexibility for the structural design of the secondary shaft.

[0011] Furthermore, the top end of the secondary shaft is provided with a threaded hole, and the threaded rod and the threaded hole are connected by a threaded engagement. The threaded connection method is simple and reliable, and is easy to install and disassemble. While realizing the telescopic function, it can ensure the transmission accuracy between the secondary shaft and the threaded rod.

[0012] Furthermore, an electric slip ring is installed on the outer side of the main shaft near its top. The rotor of the electric slip ring is connected to the main shaft. A wire groove is opened on the outer side of the main shaft to connect the cavity. The electric slip ring facilitates power transmission during the rotation and extension of the rotating shaft, while the wire groove provides reasonable wiring space for the wires, avoiding the wires from being pulled and damaged during rotation and extension, thus expanding the application scenarios of the rotating shaft.

[0013] Furthermore, four sets of fixing blocks are equidistantly distributed circumferentially on the outer side of the reinforcing sleeve, and screw holes are opened at the top of the fixing blocks. Four sets of connecting blocks are equidistantly distributed circumferentially near the bottom of the main shaft on the outer side, and through holes are opened at the top of the connecting blocks. Screws slide in the through holes, and the screws and screw holes are threadedly engaged. The reinforcing sleeve and the main shaft are reliably connected, which can effectively enhance the overall structural strength of the rotating shaft, improve its load-bearing capacity, and enable it to work stably under large loads.

[0014] Furthermore, the inner wall of the reinforcing sleeve is equipped with four sets of sliders, which slide within the limiting groove. On the one hand, this assists in the extension and retraction of the secondary shaft, making the extension and retraction process smoother. On the other hand, the reinforcing sleeve is connected to the secondary shaft through the sliders, which can better share the pressure borne by the secondary shaft, further enhancing the overall rigidity and stability of the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the telescopic rotating shaft, by optimizing the telescopic structure and adopting a simple and reliable threaded transmission and limit design, reduces manufacturing costs and maintenance difficulty; it ensures the smoothness and reliability of the telescopic process and reduces jamming; at the same time, the design of the electric slip ring and reinforcing sleeve expands the function and load-bearing capacity of the rotating shaft, enabling it to better adapt to different working conditions and space requirements. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the telescopic rotating shaft disclosed in an embodiment of the present utility model;

[0017] Figure 2 This is an exploded structural diagram of the telescopic rotating shaft disclosed in an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of structure A in the middle;

[0019] Figure 4 This is a cross-sectional structural diagram of the telescopic rotating shaft disclosed in an embodiment of the present utility model.

[0020] In the diagram: 100, shaft body; 1001, main shaft; 1002, secondary shaft; 1003, limiting groove; 1004, electric slip ring; 1005, limiting strip; 1006, threaded hole; 1007, cavity; 1008, threaded rod; 1009, motor; 1010, wire groove; 200, reinforcing member; 2001, reinforcing sleeve; 2002, slider; 2003, fixing block; 2004, connecting block. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a telescopic rotating shaft, comprising the following steps:

[0023] Prepare the main spindle 1001 and secondary spindle 1002. The main spindle 1001 has a pre-formed cavity 1007 with an opening at its bottom communicating with the cavity. Connect the threaded rod 1008 to the output shaft of the motor 1009. Install the motor 1009 at the top of the cavity 1007, ensuring that the axes of the motor 1009's output shaft, threaded rod 1008, main spindle 1001, cavity 1007, and secondary spindle 1002 are aligned. Install an electric slip ring 1004 on the outer side of the main spindle 1001 near its top, connecting the rotor of the slip ring 1004 to the main spindle 1001. Connect the motor 1009's wiring to the rotor of the slip ring 1004 through the wire groove 1010 on the outer side of the main spindle 1001. Then connect the threaded rod 1008 to the secondary spindle 1002. The threaded hole 1006 at the top of the shaft 1002 is threaded and connected. During the connection process, some lubricating oil can be applied appropriately to reduce friction between the threads and improve transmission efficiency. The end of the secondary shaft 1002 with the threaded hole 1006 is passed through the opening at the bottom of the main shaft 1001, so that it partially enters the cavity 1007. During the insertion process, the limiting groove 1003 is aligned with the limiting strip 1005. The reinforcing sleeve 2001 is put on the outside of the secondary shaft 1002, so that the slider 2002 is aligned with the limiting groove 1003 and can slide freely in the limiting groove. The fixing block 2003 is aligned with the connecting block 2004. The screw is inserted into the through hole and threaded and connected with the screw hole. The screw is tightened with a tool to ensure that the reinforcing sleeve 2001 is firmly connected to the main shaft 1001.

[0024] When the rotating shaft needs to extend or retract, the motor 1009 is started, and the output shaft of the motor 1009 drives the threaded rod 1008 to rotate. Since the secondary shaft 1002 is threadedly engaged with the threaded rod 1008, and the limiting strip 1005 slides in the limiting groove 1003 to restrict the rotation of the secondary shaft 1002, the secondary shaft 1002 will move axially along the axis of the threaded rod 1008 to achieve the extension or retraction function.

[0025] While the rotating shaft extends and retracts, the output and input ends can be connected to the main shaft 1001 and the secondary shaft 1002 in advance via bearings. Since the connection between the main shaft 1001 and the secondary shaft 1002 is ensured by threaded transmission and a limiting structure, power can be transmitted through the main shaft 1001 and the secondary shaft 1002. The electric slip ring 1004 can achieve stable power transmission during rotation, providing continuous power support for components such as the motor 1009, and ensuring that the rotating shaft works normally during rotation and extension.

[0026] Specifically, the working principle of this telescopic rotating shaft is as follows: When the rotating shaft needs to extend or retract, the motor 1009 is started, and the output shaft of the motor 1009 drives the threaded rod 1008 to rotate. Since the secondary shaft 1002 is threadedly engaged with the threaded rod 1008, and the limiting strip 1005 slides in the limiting groove 1003 to restrict the rotation of the secondary shaft 1002, the secondary shaft 1002 will move axially along the axis of the threaded rod 1008 to achieve the telescopic function. While the rotating shaft is extending or retracting, the output end and the input end can be connected to the main shaft 1001 and the secondary shaft 1002 in advance through bearings. Since the connection between the main shaft 1001 and the secondary shaft 1002 is ensured by the threaded transmission and the limiting structure, power can be transmitted through the main shaft 1001 and the secondary shaft 1002. The electric slip ring 1004 can achieve stable power transmission during rotation, providing continuous power support for components such as the motor 1009, ensuring that the rotating shaft works normally during rotation and extension.

Claims

1. A telescopic rotating shaft, characterized in that, include: A shaft body (100) includes a main shaft (1001) and a secondary shaft (1002). The main shaft (1001) has a cavity (1007) inside. The bottom end of the main shaft (1001) has an opening that communicates with the cavity (1007). One end of the secondary shaft (1002) passes through the opening and slides in the cavity (1007). A threaded rod (1008) is provided inside the cavity (1007). The secondary shaft (1002) and the threaded rod (1008) are threadedly engaged. A driving member is also provided inside the cavity (1007) to drive the threaded rod (1008) to rotate. A limiting member is provided inside the cavity (1007) to limit the rotation of the secondary shaft (1002). A reinforcing member (200) includes a reinforcing sleeve (2001) that slides on the outside of the secondary shaft (1002) and is connected to the main shaft (1001).

2. The telescopic rotating shaft according to claim 1, characterized in that, The driving component is a motor (1009), which is installed at the top of the cavity (1007). The output shaft, threaded rod (1008), main shaft (1001), cavity (1007), and secondary shaft (1002) of the motor (1009) are all on the same straight line.

3. A telescopic rotating shaft according to claim 1, characterized in that, The limiting member consists of four sets of limiting strips (1005) circumferentially distributed at equal intervals on the wall of the cavity (1007), and four sets of limiting grooves (1003) circumferentially distributed at equal intervals on the outer side of the secondary shaft (1002), and the limiting strips (1005) slide within the limiting grooves (1003).

4. A telescopic rotating shaft according to claim 3, characterized in that, The length of the limiting groove (1003) is less than the length of the secondary shaft (1002), and one end of the limiting groove (1003) is flush with the top end of the secondary shaft (1002).

5. A telescopic rotating shaft according to claim 1, characterized in that, The top end of the secondary shaft (1002) is provided with a threaded hole (1006), and the threaded rod (1008) and the threaded hole (1006) are threadedly engaged.

6. A telescopic rotating shaft according to claim 1, characterized in that, An electric slip ring (1004) is installed on the outer side of the main shaft (1001) near its top end. The rotor of the electric slip ring (1004) is connected to the main shaft (1001). A groove (1010) communicating with the cavity (1007) is opened on the outer side of the main shaft (1001).

7. A telescopic rotating shaft according to claim 1, characterized in that, The outer side of the reinforcing sleeve (2001) has four sets of fixing blocks (2003) circumferentially distributed at equal intervals. The top of each fixing block (2003) has a screw hole. The outer side of the main shaft (1001) has four sets of connecting blocks (2004) circumferentially distributed at equal intervals near its bottom end. The top of each connecting block (2004) has a through hole. A screw slides in the through hole and is threadedly engaged with the screw hole.

8. A telescopic rotating shaft according to claim 3, characterized in that, The inner wall of the reinforcing sleeve (2001) is equipped with four sets of sliders (2002), which slide within the limiting groove (1003).

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