A center rotary valve capable of infinite rotation

Abstract

This application provides a center rotary valve capable of unlimited rotation, relating to the field of scissor lift aerial work platforms. The valve includes a center rotary valve with a limit switch at its upper end and a base fixedly connected to its bottom. A circumferentially arranged fixing frame is fixedly connected inside the base. A screw is threadedly connected inside the base, and a drive rod is slidably connected inside the screw. A rotating plate is fixedly connected to the surface of the drive rod, and the rotating plate is rotatably connected to the interior of the fixing frame. A second gear is fixedly connected to the surface of the drive rod. This application achieves simultaneous installation of multiple screws by rotating the rotating rod, causing them to rotate simultaneously and move outward from the base, thus connecting to an external mounting base. This avoids the need to rotate the screws sequentially and prevents the screws from being exposed to the outside, thereby preventing damage from collisions.

Description

Technical Field

[0001] This utility model relates to the field of scissor lift aerial work platforms, and more specifically, to a center rotary valve that can rotate infinitely. Background Technology

[0002] One of the requirements for telescopic boom aerial work platforms is turntable rotation. When operators need to adjust the construction position or move to another site, they need to rotate the turntable to different angles. Currently, most telescopic boom aerial work platforms control their rotation wirelessly through a central rotary valve.

[0003] However, in most existing methods of installing a central rotary valve, the valve is secured by rotating multiple bolts sequentially. This requires workers to rotate the bolts one by one during installation and disassembly, hindering quick installation and removal. To address this issue, a central rotary valve capable of unlimited rotation is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the current method requires rotating bolts sequentially to fix the central rotary valve, which is not conducive to the quick installation and disassembly of the central rotary valve by the workers.

[0005] To achieve the above-mentioned objectives and improve the aforementioned problems, this utility model provides a central rotary valve capable of infinite rotation, comprising a central rotary valve, a limit switch at the upper end of the central rotary valve, a base fixedly connected to the bottom of the central rotary valve, a fixed frame arranged in a circle fixedly connected inside the base, a screw threadedly connected inside the base, a drive rod slidably connected inside the screw, a rotating plate fixedly connected to the surface of the drive rod, the rotating plate being rotatably connected to the interior of the fixed frame, and a second gear fixedly connected to the surface of the drive rod.

[0006] As a preferred technical solution of this application, the fixing frame is U-shaped and the driving rod is hexagonal.

[0007] As a preferred technical solution of this application, the base is rotatably connected to a second bevel gear, and a first gear is fixedly connected to the surface of the second bevel gear, with the surface of the first gear meshing with the surface of the second gear.

[0008] As a preferred technical solution of this application, the central rotary valve is rotatably connected to a rotating rod, which extends through the interior of the base. One end of the rotating rod located inside the base is fixedly connected to a first bevel gear, and the surface of the first bevel gear meshes with the surface of a second bevel gear.

[0009] As a preferred technical solution of this application, the rotating rod has a guide groove inside, and a baffle plate is slidably connected to the inner wall of the guide groove.

[0010] As a preferred technical solution of this application, the guide groove is arranged in a regular hexagonal shape, and the baffle is also arranged in a regular hexagonal shape.

[0011] As a preferred technical solution of this application, a reset spring is fixedly connected to the inner wall of the guide groove, and the end of the reset spring away from the rotating rod is fixedly connected to the baffle plate.

[0012] As a preferred technical solution of this application, a rubber pad is fixedly connected to the surface of the baffle plate, and the rubber pad is in contact with the inner wall of the guide groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In the scheme of this application:

[0015] By rotating the rotating rod, multiple screws rotate simultaneously, causing them to move outwards from the base and connect to external mounting brackets. This allows for the simultaneous installation of multiple screws, avoiding the need to rotate them sequentially and preventing them from being exposed to the outside, thus preventing damage from collisions and further improving the device's performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the central rotary valve of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the base of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the fixing frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the rotating rod of this utility model.

[0020] The image shows:

[0021] 1. Central rotary valve; 2. Base; 3. Rubber pad; 4. Rotating rod; 5. First bevel gear; 6. Second bevel gear; 7. First gear; 8. Fixing frame; 9. Second gear; 10. Drive rod; 11. Rotating plate; 12. Screw; 13. Return spring; 14. Baffle plate; 15. Guide groove; 16. Limit switch. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A central rotary valve capable of infinite rotation includes a central rotary valve 1. A limit switch 16 is installed at the upper end of the central rotary valve 1. The limit switch 16, mounted on the rotor, serves as an emergency descent mechanism. The limit switch 16 is a known prior art and will not be explained further. A base 2 is fixedly connected to the bottom of the central rotary valve 1. A U-shaped fixing frame 8 is fixedly connected inside the base 2 in a circular arrangement. A screw 12 is threaded inside the base 2, and a drive rod 10 is slidably connected inside the screw 12. The drive rod 10 is hexagonal in shape. A rotating plate 11 is fixedly connected to the surface of the drive rod 10, and the rotating plate 11 is rotatably connected to the interior of the fixing frame 8. A second gear 9 is fixedly connected to the surface of the drive rod 10. The fixing frame 8 limits the position of the rotating plate 11, thereby limiting the position of the drive rod 10 and preventing slippage.

[0027] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a second bevel gear 6 is rotatably connected inside the base 2, and a first gear 7 is fixedly connected to the surface of the second bevel gear 6. The surface of the first gear 7 meshes with the surface of the second gear 9. The rotation of the second bevel gear 6 drives the first gear 7, thereby driving the second gear 9.

[0028] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a rotating rod 4 is rotatably connected inside the central rotary valve 1. The rotating rod 4 extends into the interior of the base 2. A first bevel gear 5 is fixedly connected to one end of the rotating rod 4 inside the base 2. The surface of the first bevel gear 5 meshes with the surface of the second bevel gear 6. By rotating the rotating rod 4, the rotating rod 4 drives the first bevel gear 5 to drive the first gear 7.

[0029] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a guide groove 15 is provided inside the rotating rod 4. The guide groove 15 is a regular hexagon. A baffle plate 14 is slidably connected to the inner wall of the guide groove 15. The baffle plate 14 is also a regular hexagon. A return spring 13 is fixedly connected to the inner wall of the guide groove 15. The end of the return spring 13 away from the rotating rod 4 is fixedly connected to the baffle plate 14. The return spring 13 controls the return sliding of the baffle plate 14. The baffle plate 14 blocks the return spring 13, thus preventing the return spring 13 from contacting the outside world. This reduces the possibility of the return spring 13 corroding due to contact with water or humid air, and also prevents dust and other impurities from clogging the guide groove 15.

[0030] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a rubber pad 3 is fixedly connected to the surface of the baffle plate 14. The rubber pad 3 is in contact with the inner wall of the guide groove 15. By setting the rubber pad 3, the gap between the baffle plate 14 and the guide groove 15 is further filled, thereby further increasing the sealing effect of the guide groove 15.

[0031] The process of using the infinitely rotating center rotary valve provided by this utility model is as follows: When it is necessary to fix the center rotary valve 1, the base 2 is installed on the fixed mounting seat. Then, the operator inserts a hex wrench into the guide groove 15 and rotates the hex wrench. The hex wrench drives the rotating rod 4 to rotate, which in turn drives the first bevel gear 5 to rotate. The first bevel gear 5 then drives the second bevel gear 6 to rotate, which in turn drives the first gear 7 to rotate. The first gear 7 then drives multiple second gears 9 to rotate simultaneously. The multiple second gears 9 drive the drive rod 10 to rotate. Due to the setting of the rotating plate 11, the drive rod 10 is not blocked by the fixing frame 8 when rotating. The drive rod 10 drives the screw 12 to rotate through the regular hexagonal setting. Due to the sliding connection between the screw 12 and the drive rod 10, the screw 12 moves outward from the base 2 as it rotates, thus connecting to the external mounting seat and completing the simultaneous installation of multiple screws 12.

[0032] When the hex wrench is inserted into the guide groove 15, it presses down on the baffle plate 14, causing the baffle plate 14 to slide into the guide groove 15 under force. Simultaneously, the sliding of the baffle plate 14 deforms the return spring 13. After the hex wrench is used, it is removed and no longer obstructs the sliding of the baffle plate 14. Under the elastic force of the return spring 13, the baffle plate 14 slides again to seal the guide groove 15, thus preventing the return spring 13 from contacting the outside environment. This reduces the risk of corrosion due to water or humid air, and also prevents dust and other impurities from clogging the guide groove 15.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A center rotary valve capable of infinite rotation, comprising a center rotary valve (1), characterized in that: The upper end of the central rotary valve (1) is provided with a limit switch (16), the bottom of the central rotary valve (1) is fixedly connected to a base (2), the inside of the base (2) is fixedly connected to a fixed frame (8) arranged in a circle, the inside of the base (2) is threadedly connected to a screw (12), the inside of the screw (12) is slidably connected to a drive rod (10), the surface of the drive rod (10) is fixedly connected to a rotating plate (11), the rotating plate (11) is rotatably connected to the inside of the fixed frame (8), and the surface of the drive rod (10) is fixedly connected to a second gear (9).

2. The infinitely rotating center rotary valve according to claim 1, characterized in that: The fixing frame (8) is U-shaped, and the driving rod (10) is hexagonal.

3. A center rotary valve capable of infinite rotation according to claim 2, characterized in that: The base (2) is rotatably connected to a second bevel gear (6), and a first gear (7) is fixedly connected to the surface of the second bevel gear (6). The surface of the first gear (7) meshes with the surface of the second gear (9).

4. A center rotary valve capable of infinite rotation according to claim 3, characterized in that: The central rotary valve (1) is rotatably connected to a rotating rod (4), which extends into the interior of the base (2). One end of the rotating rod (4) located inside the base (2) is fixedly connected to a first bevel gear (5), and the surface of the first bevel gear (5) meshes with the surface of the second bevel gear (6).

5. A center rotary valve capable of infinite rotation according to claim 4, characterized in that: The rotating rod (4) has a guide groove (15) inside, and a baffle plate (14) is slidably connected to the inner wall of the guide groove (15).

6. A center rotary valve capable of infinite rotation according to claim 5, characterized in that: The guide groove (15) is hexagonal, and the shield (14) is also hexagonal.

7. A center rotary valve capable of infinite rotation according to claim 6, characterized in that: A reset spring (13) is fixedly connected to the inner wall of the guide groove (15), and the end of the reset spring (13) away from the rotating rod (4) is fixedly connected to the baffle plate (14).

8. A center rotary valve capable of infinite rotation according to claim 7, characterized in that: A rubber pad (3) is fixedly connected to the surface of the baffle plate (14), and the rubber pad (3) is in contact with the inner wall of the guide groove (15).

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