Compact actuating mechanism with high sealing performance

Abstract

The utility model discloses a compact actuating mechanism with high sealing performance, which comprises a metal shell and a transmission component, an indication transmission shaft is inserted in the middle of the metal shell, and the transmission component used for manually controlling the indication transmission shaft is mounted on the right side of the top of the metal shell. The transmission assembly comprises a limiting convex block, a rotating shaft, a transmission gear, a handle and a limiting concave block, the rotating shaft is fixedly installed at the bottom of the limiting convex block, the outer wall of the bottom end of the rotating shaft is sleeved with the transmission gear, the handle is arranged at the top of the limiting convex block, and the limiting concave block is fixedly installed at the bottom of the handle. The handle is clamped and fixed to the limiting convex block through the limiting concave block, the left side of the transmission gear is connected with a driven gear in a meshed mode, and the diameter of the driven gear is larger than that of the transmission gear. According to the compact actuating mechanism with the high sealing performance, the device can be controlled to work through an external handle, and meanwhile force used for adjusting through the handle can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to an actuator with compactness and high sealing performance. Background Art

[0002] Actuators use liquid, gas, electricity or other energy and convert it into a driving action through a motor, cylinder or other device. Basic actuators are used to drive valves to fully open or fully closed positions. Actuators used with control valves can accurately move valves to any position.

[0003] For example, the patent document with application number CN202223082992.6 discloses an actuator. This utility model actuator adopts a split-chamber installation method, and the designated cavity can be disassembled during maintenance, making maintenance more labor-saving and convenient for staff to perform maintenance. It is highly practical. However, once a hydraulic cylinder failure occurs in the actuator, it will not be able to be driven manually. At the same time, the manual handle will take up a lot of space, which is not conducive to storage and transportation.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a compact actuator with high sealing performance is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a compact actuator with high sealing performance to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compact and highly sealed actuator, comprising a metal shell and a transmission assembly, an indicating transmission shaft is inserted in the middle of the metal shell, and the transmission assembly for manually controlling the indicating transmission shaft is installed on the top right side of the metal shell, the transmission assembly comprises a limit protrusion, a rotating shaft, a transmission gear, a handle and a limit recessed block, a rotating shaft is fixedly installed at the bottom of the limit protrusion, and a transmission gear is sleeved on the outer wall of the bottom end of the rotating shaft, a handle is provided on the top of the limit protrusion, and a limiting recessed block is fixedly installed at the bottom of the handle, and the handle is fixed to the limit protrusion by engaging with the limit recessed block.

[0007] Preferably, the left side of the transmission gear is meshedly connected with a driven gear, and the diameter of the driven gear is larger than the diameter of the transmission gear.

[0008] Preferably, a driving gear is fixedly mounted on the outer wall of the middle end of the indicating transmission shaft, and the front end of the driving gear is meshedly connected to the original gear plate.

[0009] Preferably, a first pneumatic rod is fixedly mounted on the right end of the gear plate, and a fixing plate is fixedly mounted on the outer wall of the right end of the first pneumatic rod.

[0010] Preferably, the four corners of the fixing plate are threadedly connected with fixing screws, and the fixing plate is fixed to the metal shell by the fixing screws.

[0011] Preferably, a second pneumatic rod is fixedly mounted on the right end of the metal shell, and the overall structure of the second pneumatic rod is consistent with the overall structure of the first pneumatic rod.

[0012] Preferably, a support plate is rotatably connected to the bottom of the rotating shaft, and a rear end of the support plate is fixed to the inner wall of the metal shell.

[0013] Compared with the prior art, the utility model has the beneficial effects that the compact and highly sealed actuator can not only control the operation of the device through an external handle, but also reduce the force used in adjusting the handle.

[0014] 1. The utility model arranges the transmission assembly so that the limit concave block arranged at the bottom of the handle is docked with the limit convex block, so that the handle drives the rotating shaft to rotate through the limit convex block engaged inside the limit concave block, and the rotating shaft controls the transmission gear meshing with the driven gear to rotate while the rotating shaft rotates, and the driven gear drives the internal fixed indicating transmission shaft while rotating, and then drives the valve fixed at the end to rotate and adjust through the indicating transmission shaft, so as to achieve the purpose of controlling the operation of the device through the external handle;

[0015] 2. The utility model arranges the transmission gear in conjunction with the driven gear, so that the transmission gear and the driven gear are combined to be equivalent to a force amplifier or a speed reducer, so that the driven gear can be rotated by a smaller force, thereby achieving the purpose of labor saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a compact and highly sealed actuator of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a compact and highly sealed actuator of the utility model;

[0018] Figure 3 This is a schematic diagram of the transmission assembly structure of a compact and highly sealed actuator of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure between the gear plate and the driving gear of a compact and highly sealed actuator.

[0020] In the figure: 1. Metal shell; 2. Indicating transmission shaft; 3. Transmission assembly; 301. Limiting protrusion; 302. Rotating shaft; 303. Transmission gear; 304. Handle; 305. Limiting concave block; 4. Driven gear; 5. Driving gear; 6. Gear plate; 7. First pneumatic rod; 8. Fixing plate; 9. Fixing screw; 10. Second pneumatic rod; 11. Support plate. 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] like Figure 1-Figure 4 As shown, a compact and highly sealed actuator includes a metal shell 1 and a transmission assembly 3. An indicating transmission shaft 2 is inserted in the middle of the metal shell 1. The transmission assembly 3 for manually controlling the indicating transmission shaft 2 is installed on the top right side of the metal shell 1. The transmission assembly 3 includes a limiting protrusion 301, a rotating shaft 302, a transmission gear 303, a handle 304 and a limiting recessed block 305. The rotating shaft 302 is fixedly installed at the bottom of the limiting protrusion 301, and the transmission gear 303 is sleeved on the outer wall of the bottom end of the rotating shaft 302. A handle 304 is provided on the top of the limiting protrusion 301, and the limiting recessed block 305 is fixedly installed at the bottom of the handle 304. The handle 304 is fixedly engaged with the limiting protrusion 301 through the limiting recessed block 305.

[0023] By adopting the above technical solution, the limiting concave block 305 set at the bottom of the handle 304 is connected with the limiting protrusion 301, so that the handle 304 drives the rotating shaft 302 to rotate through the limiting protrusion 301 engaged inside the limiting concave block 305, and the rotating shaft 302 rotates while controlling the transmission gear 303 meshing with the driven gear 4 to rotate. The driven gear 4 rotates while driving the internal fixed indicating transmission shaft 2, and then the indicating transmission shaft 2 drives the valve fixed at the end to rotate and adjust, so as to achieve the purpose of controlling the operation of the device through the external handle 304.

[0024] like Figure 2 As shown, the left side of the transmission gear 303 is meshedly connected with a driven gear 4 , and the diameter of the driven gear 4 is larger than the diameter of the transmission gear 303 .

[0025] By adopting the above technical solution, the transmission gear 303 is used to provide power for the rotation of the driven gear 4.

[0026] Furthermore, a driving gear 5 is fixedly mounted on the outer wall of the middle end of the indicating transmission shaft 2 , and the front end of the driving gear 5 is meshedly connected with the original gear plate 6 .

[0027] By adopting the above technical solution, the gear plate 6 is used to drive the driving gear 5 provided with the indicating transmission shaft 2 to rotate.

[0028] Furthermore, a first pneumatic rod 7 is fixedly mounted on the right end of the gear plate 6 , and a fixing plate 8 is fixedly mounted on the outer wall of the right end of the first pneumatic rod 7 .

[0029] By adopting the above technical solution, the fixing plate 8 facilitates the connection between the first pneumatic rod 7 fixed inside the fixing plate 8 and the metal shell 1 .

[0030] Furthermore, the four corners of the fixing plate 8 are threadedly connected with fixing screws 9 , and the fixing plate 8 is fixed to the metal housing 1 via the fixing screws 9 .

[0031] Furthermore, a second pneumatic rod 10 is fixedly mounted on the right end of the metal housing 1 , and the overall structure of the second pneumatic rod 10 is consistent with the overall structure of the first pneumatic rod 7 .

[0032] By adopting the above technical solution, the first pneumatic rod 7 provides power for the movement of the gear plate 6 .

[0033] Furthermore, the bottom of the rotating shaft 302 is rotatably connected to a support plate 11 , and the rear end of the support plate 11 is fixed to the inner wall of the metal shell 1 .

[0034] The support plate 11 prevents the rotating shaft 302 from falling when rotating.

[0035] Working principle: When using the compact and highly sealed actuator, first, the first pneumatic rod 7 and the second pneumatic rod 10 synchronously drive the gear plates 6 fixed at their respective top ends, and then the gear plates 6 move relative to each other and drive the driving gear 5 to work. When the second pneumatic rod 10 or the first pneumatic rod 7 fails to work, the limiting concave block 305 provided at the bottom of the handle 304 is docked with the limiting protrusion 301, so that the handle 304 drives the rotating shaft 302 to rotate through the limiting protrusion 301 engaged inside the limiting concave block 305. While the rotating shaft 302 rotates, the transmission gear 303 meshing with the driven gear 4 is controlled to rotate. While the driven gear 4 rotates, the indicating transmission shaft 2 fixed inside is driven. The combination of the transmission gear 303 and the driven gear 4 is equivalent to a force amplifier or a speed reducer, so that the driven gear 4 can be rotated by a smaller force, reducing the force consumption, and then the valve fixed at the end is driven to rotate and adjust through the indicating transmission shaft 2. This is the working principle of the compact and highly sealed actuator.

Claims

1. A compact and highly sealed actuator, comprising a metal housing (1) and a transmission assembly (3), characterized in that: An indicating transmission shaft (2) is inserted through the middle of the metal shell (1), and the transmission assembly (3) for manually controlling the indicating transmission shaft (2) is installed on the top right side of the metal shell (1). The transmission assembly (3) comprises a limiting protrusion (301), a rotating shaft (302), a transmission gear (303), a handle (304) and a limiting recessed block (305). The bottom of the limiting protrusion (301) is fixedly mounted with the rotating shaft (302), and the outer wall of the bottom end of the rotating shaft (302) is sleeved with the transmission gear (303). The top of the limiting protrusion (301) is provided with a handle (304), and the bottom of the handle (304) is fixedly mounted with the limiting recessed block (305). The handle (304) is fixedly engaged with the limiting protrusion (301) through the limiting recessed block (305).

2. A compact and highly sealed actuator according to claim 1, characterized in that: The left side of the transmission gear (303) is meshedly connected with a driven gear (4), and the diameter of the driven gear (4) is larger than the diameter of the transmission gear (303).

3. A compact and highly sealed actuator according to claim 1, characterized in that: A driving gear (5) is fixedly mounted on the outer wall of the middle end of the indicating transmission shaft (2), and the front end of the driving gear (5) is meshedly connected with the original gear plate (6).

4. A compact and highly sealed actuator according to claim 3, characterized in that: A first pneumatic rod (7) is fixedly mounted on the right end of the gear plate (6), and a fixing plate (8) is fixedly mounted on the outer wall of the right end of the first pneumatic rod (7).

5. A compact and highly sealed actuator according to claim 4, characterized in that: The four corners of the fixing plate (8) are threadedly connected with fixing screws (9), and the fixing plate (8) is fixed to the metal housing (1) via the fixing screws (9).

6. A compact and highly sealed actuator according to claim 1, characterized in that: A second pneumatic rod (10) is fixedly mounted on the right end of the metal housing (1), and the overall structure of the second pneumatic rod (10) is consistent with the overall structure of the first pneumatic rod (7).

7. A compact and highly sealed actuator according to claim 1, characterized in that: The bottom of the rotating shaft (302) is rotatably connected to a support plate (11), and the rear end of the support plate (11) is fixed to the inner wall of the metal shell (1).

Images