Connecting device capable of preventing reverse rotation

Abstract

The utility model relates to an anti-reversion device, in particular to a connecting device for preventing reverse rotation, which specifically comprises the following components: a rotating shaft, N uniformly distributed openings are formed in one end of the rotating shaft, and each opening is provided with a cylindrical pin; n uniformly distributed cambered surfaces are arranged at one end of the stop shaft, the end, with the cambered surfaces, of the stop shaft is inserted into the rotating shaft, and each cylindrical pin is matched with one cambered surface; n is a positive integer and N is greater than or equal to 3. The connecting device for preventing reverse rotation is simple in structural composition, low in machining cost and more convenient and flexible to use, the use scene and the application range are expanded, modular application is achieved, and higher safety and reliability are achieved.

Description

Technical Field

[0001] This invention relates to an anti-reverse rotation device, specifically to a connecting device that prevents reverse rotation. Background Technology

[0002] Connection devices that prevent reverse rotation of mechanical parts are key functional components for ensuring safe equipment operation and avoiding power backflow. Their technological background is closely related to industrial automation needs, the evolution of mechanical safety standards, material and process innovations, and cross-disciplinary technological integration.

[0003] In traditional industrial settings, the unidirectional operation of power machinery is a critical requirement in equipment such as gearboxes, conveyors, and elevators. If the power source (such as a motor) stops or malfunctions, the load inertia may cause the drive shaft to rotate in reverse, leading to mechanical impacts (such as gear breakage), material backflow (such as conveyor belt slippage), or even safety accidents (such as elevator slippage). Anti-reverse rotation devices can be used to prevent reverse rotation through motors, air pumps, or hydraulic dampers, thus forcibly maintaining unidirectional rotation of the shaft system. However, the overall structure of such anti-reverse rotation devices is relatively complex, relying heavily on machining precision and quality to ensure their effectiveness. In particular, relying on motors, air pumps, or hydraulic dampers to prevent reverse rotation increases manufacturing costs and complexity.

[0004] The high reliability and intelligence requirements of modern industry necessitate that precision equipment possess certain dynamic protection functions. In applications such as semiconductor manufacturing equipment and medical robots, anti-reverse rotation devices require millisecond-level response times. In extreme operating conditions of new energy and heavy equipment, such as wind turbine pitch control systems, anti-reverse rotation devices need to operate reliably within a temperature range of -40℃ to 80℃ and withstand typhoon-level loads (e.g., blade reversal torque corresponding to a Category 12 wind). Anti-reverse rotation devices for oil drilling equipment need to adapt to high-dust and high-vibration environments to prevent drill pipe reversal and stuck drill accidents. While anti-reverse rotation devices can prevent reverse rotation in these applications, specialized anti-reverse rotation devices developed for these scenarios suffer from limited application scenarios, restricting their scope and usage. Summary of the Invention

[0005] To address the problems of existing anti-reverse rotation devices, such as cumbersome structure, high cost, and limited application scenarios, this invention provides a connection device to prevent reverse rotation.

[0006] The present invention provides a connecting device for preventing reverse rotation, which has the advantages of simple structure, low manufacturing cost, easy manufacturing and short manufacturing cycle. It can be used in a modular manner and improves the effect of preventing reverse rotation.

[0007] The technical solution adopted by this invention to solve the technical problem is as follows:

[0008] The present invention provides a connecting device for preventing reverse rotation, which mainly includes:

[0009] A rotating shaft, one end of which is provided with N evenly distributed openings, each opening being fitted with a cylindrical pin;

[0010] A stop shaft, one end of which is provided with N evenly distributed arc surfaces, the end of the stop shaft with the arc surfaces is inserted into the rotating shaft, and each cylindrical pin is respectively engaged with one arc surface;

[0011] N is a positive integer and N≥3.

[0012] In a preferred embodiment, the present invention further includes: a base; the base has a hollow structure inside, with a boss at the lower end and a hollow cylindrical tube at the upper end.

[0013] In a preferred embodiment, the rotating shaft is installed inside the hollow cylindrical tube.

[0014] In a preferred embodiment, the present invention further includes: an end cap; the end cap is fixed to the upper end of the hollow cylindrical tube.

[0015] In a preferred embodiment, the end cap has a central circular hole; the end cap is fitted onto the stop shaft.

[0016] In a preferred embodiment, a keyway for the rotating shaft is provided on the inner wall of the lower end of the rotating shaft.

[0017] In a preferred embodiment, the upper sidewall of the stop shaft is provided with a stop shaft keyway.

[0018] In a preferred embodiment, the lower end of the stop shaft has an annular protrusion on its outer wall.

[0019] In a more preferred embodiment, the arc surface is disposed on the outer wall of the protrusion.

[0020] In a more preferred embodiment, the rotating shaft drives the stop shaft to rotate via a cylindrical pin; conversely, when the stop shaft rotates, the rotation of the stop shaft is restricted by the cooperation between the cylindrical pin and the arc surface, thereby preventing reverse rotation.

[0021] The beneficial effects of this invention are:

[0022] 1. In view of the problems of cumbersome structure and high manufacturing cost of existing anti-reverse devices, the present invention simplifies the structural composition by omitting the motor, air pump or hydraulic damper, and achieves high reliability in preventing reverse rotation by only making ingenious structural design of the rotating shaft and the stop shaft. It has the advantages of simple structure and low processing cost.

[0023] 2. To address the issue of limited application scenarios in existing anti-reverse devices, this invention addresses this problem by setting a keyway on the rotating shaft and a keyway on the stopping shaft. By making the connecting device a module, it can be connected to other devices, thus expanding the application scenarios and scope of the connecting device and realizing its modular application.

[0024] 3. The connecting device for preventing reverse rotation provided by the present invention can achieve 360-degree rotation, which expands the rotation angle and makes it more convenient and flexible to use.

[0025] 4. Compared with existing anti-reverse devices that use motors, air pumps or hydraulic dampers, the present invention uses a mechanical structure to prevent reverse rotation, which will not fail due to electrical faults and has higher safety and reliability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a connecting device for preventing reverse rotation provided by the present invention.

[0027] Figure 2 An exploded view of a connecting device for preventing reverse rotation provided by the present invention.

[0028] Figure 3 This is a schematic diagram of the bottom structure of a connecting device for preventing reverse rotation provided by the present invention.

[0029] Figure 4 This is a schematic diagram of the top structure of a connecting device for preventing reverse rotation provided by the present invention.

[0030] Figure 5 This is a cross-sectional view of a connecting device for preventing reverse rotation provided by the present invention.

[0031] In the figure, end cap 1, stop shaft 2, first cylindrical pin 3, second cylindrical pin 4, third cylindrical pin 5, rotating shaft 6, base 7, boss 701, hollow cylindrical tube 702, rotating shaft keyway 8, stop shaft keyway 9, protrusion 10, and arc surface 101. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] like Figures 1 to 5 As shown, the present invention provides a connecting device for preventing reverse rotation, which specifically includes the following components:

[0034] End cap 1, stop shaft 2, first cylindrical pin 3, second cylindrical pin 4, third cylindrical pin 5, rotating shaft 6, base 7, stop shaft keyway 9, rotating shaft keyway 8 and protrusion 10.

[0035] In one embodiment of the present invention, the base 7 has a hollow structure inside, with a boss 701 at its lower end and a hollow cylindrical tube 702 at its upper end, which facilitates the connection of other devices from the bottom of the base 7.

[0036] In one embodiment of the present invention, the rotating shaft 6 is configured as a cylinder, with a platform 601 in the middle, and three evenly distributed openings 602 on the platform 601.

[0037] Specifically, the rotating shaft 6 is installed as a whole in the hollow cylindrical tube 702 of the base 7.

[0038] Specifically, a keyway 8 is provided on the inner wall of the lower end of the rotating shaft 6. This keyway 8 is mainly used to connect other devices. For example, it can connect other devices via a key. This structural design facilitates the connection of output terminals of different sizes, enabling modular and diversified connection solutions.

[0039] Specifically, the first cylindrical pin 3, the second cylindrical pin 4, and the third cylindrical pin 5 are respectively installed in the three openings at the upper end of the rotating shaft 6.

[0040] In one embodiment of the present invention, an annular protrusion 10 is provided on the outer wall of the lower end of the stop shaft 2.

[0041] Specifically, the protrusion 10 is provided with three evenly distributed arc surfaces 101.

[0042] Specifically, the lower end of the stop shaft 2 is inserted into the rotating shaft 6. At this time, the lower end of the stop shaft 2 is in contact with the upper surface of the platform 601, and the three arc surfaces 101 on the protrusion 10 are in contact with the first cylindrical pin 3, the second cylindrical pin 4, and the third cylindrical pin 5, respectively. After installation, the rotating shaft 6 forms a pin-shaft fit relationship with the stop shaft 2 through the first cylindrical pin 3, the second cylindrical pin 4, and the third cylindrical pin 5.

[0043] Specifically, a stop shaft keyway 9 is provided on the upper side wall of the stop shaft 2. This stop shaft keyway 9 is mainly used to connect other devices. For example, it can connect other devices via a key. This structural design facilitates the connection of output terminals of different sizes, realizing modular and diversified connection solutions.

[0044] In one embodiment of the present invention, the end cap 1 is provided with a central circular hole.

[0045] Specifically, the end cap 1 is fitted onto the stop shaft 2 and limited by the upper edge of the protrusion 10; at the same time, the end cap 1 is fixed to the upper end of the hollow cylindrical tube 702 of the base 7 by bolts.

[0046] The present invention provides a connecting device for preventing reverse rotation. In use, other devices can be connected to the rotating shaft 6 via key pins, and other devices can also be connected to the stop shaft 2 via key pins.

[0047] This invention provides a connecting device for preventing reverse rotation, which achieves the effect of preventing reverse rotation through an ingenious internal structural design. Specifically, the rotating shaft 6 can drive the stop shaft 2 to rotate through the first cylindrical pin 3, the second cylindrical pin 4, and the third cylindrical pin 5. Conversely, when the stop shaft 2 rotates, the first cylindrical pin 3, the second cylindrical pin 4, and the third cylindrical pin 5, in cooperation with the three arc surfaces 101, restrict the rotation of the stop shaft 2, thereby achieving the effect of preventing reverse rotation.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connecting device for preventing reverse rotation, characterized in that, include: A rotating shaft (6) has N evenly distributed openings at one end, and a cylindrical pin is installed in each opening. Stop shaft (2), one end of the stop shaft (2) is provided with N evenly distributed arc surfaces, the end of the stop shaft (2) with the arc surface is inserted into the rotating shaft (6), and each cylindrical pin is respectively matched with an arc surface; N is a positive integer and N≥3.

2. The connecting device for preventing reverse rotation according to claim 1, characterized in that, Also includes: The base (7) has a hollow structure inside, with a boss (701) at the lower end and a hollow cylindrical tube (702) at the upper end.

3. The connecting device for preventing reverse rotation according to claim 2, characterized in that, The rotating shaft (6) is installed in the hollow cylindrical tube (702).

4. The connecting device for preventing reverse rotation according to claim 2, characterized in that, Also includes: End cap (1); the end cap (1) is fixed to the upper end of the hollow cylindrical tube (702).

5. A connecting device for preventing reverse rotation according to claim 4, characterized in that, The end cap (1) has a central circular hole; the end cap (1) is fitted onto the stop shaft (2).

6. The connecting device for preventing reverse rotation according to claim 1, characterized in that, The inner wall of the lower end of the rotating shaft (6) is provided with a rotating shaft keyway (8).

7. The connecting device for preventing reverse rotation according to claim 1, characterized in that, The upper side wall of the stop shaft (2) is provided with a stop shaft keyway (9).

8. A connecting device for preventing reverse rotation according to claim 1, characterized in that, The lower end of the stop shaft (2) has an annular protrusion (10) on its outer wall.

9. A connecting device for preventing reverse rotation according to claim 8, characterized in that, The arc surface (101) is disposed on the outer wall of the protrusion (10).

10. A connecting device for preventing reverse rotation according to claim 9, characterized in that, The rotating shaft (6) drives the stop shaft (2) to rotate through the cylindrical pin; conversely, when the stop shaft (2) is rotated, the rotation of the stop shaft (2) is restricted through the cooperation between the cylindrical pin and the arc surface (101), thereby achieving the effect of preventing reverse rotation.

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