Worm gear and worm air damper

Abstract

The utility model relates to the field of ship ventilation equipment, in particular to a worm gear and worm air adjusting door which comprises a frame body, a gate plate is rotationally connected into the frame body, a rotating shaft is fixedly connected to the gate plate, the end of the rotating shaft extends out of the side wall of the frame body, and a worm gear and worm transmission assembly for driving the rotating shaft to rotate is arranged on the frame body. The air adjusting device has the effects that rotation of the air adjusting door can be adjusted conveniently, and operation of a user is facilitated.

Description

Technical Field

[0001] This application relates to the field of marine ventilation equipment, and in particular to a worm gear damper. Background Technology

[0002] In ship ventilation systems, dampers are not merely devices for simply adjusting airflow, but also regulating devices for precise control of the environment in various areas of the ship. By adjusting the layout of dampers, the airflow can be flexibly adjusted according to the specific needs of different compartments, such as personnel density, equipment heat generation, and cargo characteristics, ensuring that every corner receives adequate air circulation.

[0003] Currently, handle-type dampers are commonly used, where the damper is opened and closed by directly rotating the shaft with the handle. However, due to the size limitations of the handle, rotating the shaft of a large damper requires a large torque, making it inconvenient to use. Furthermore, because the handle is flush against the frame, if the installation position is high, personnel must climb to operate it, further complicating the process. Utility Model Content

[0004] To facilitate the adjustment of the damper's rotation and make it easier for users to operate, this application provides a worm gear damper.

[0005] This application provides a worm gear damper, which adopts the following technical solution:

[0006] A worm gear damper includes a frame, a gate plate rotatably connected inside the frame, a rotating shaft fixedly connected to the gate plate, the end of the rotating shaft extending from the side wall of the frame, and a worm gear transmission assembly for driving the rotating shaft to rotate is provided on the frame.

[0007] Optionally, the transmission assembly includes a housing, inside which a worm gear is rotatably connected. The worm gear is coaxially and fixedly connected to the rotating shaft. A worm is meshed with one side of the worm gear, and the end of the worm extends from the side wall of the housing.

[0008] Optionally, a sleeve is fixedly connected to the outer end of the worm gear located on the housing, and a handwheel control lever is fixedly connected inside the sleeve.

[0009] Optionally, a pointer is provided on the outer wall of the housing, the rotation center of the pointer is fixedly connected to the worm gear on the same axis, and a scale is provided on the housing relative to the pointer, with the end of the pointer pointing to the scale.

[0010] Optionally, the gate includes an upper pressure plate and a lower pressure plate. The upper pressure plate has a first curved portion relative to the rotating shaft, and the lower pressure plate has a second curved portion relative to the rotating shaft. The first curved portion and the second curved portion are sleeved on the outside of the rotating shaft, and the upper pressure plate and the lower pressure plate are fixedly connected.

[0011] Optionally, a first sealing sheet is fixedly connected to one end of the lower pressure plate, and a second sealing sheet is fixedly connected to the other end of the lower pressure plate. The first sealing sheet extends toward a first side of the lower pressure plate, and the second sealing sheet extends toward a second side of the lower pressure plate. The first sealing sheet and the second sealing sheet are parallel.

[0012] Optionally, multiple gates are provided, and a linkage component is provided between the multiple gates, which drives the multiple gates to rotate synchronously.

[0013] Optionally, the linkage assembly includes a first rotating arm and a second rotating arm arranged opposite to each other. A connecting rod is provided at the end of the first rotating arm and the second rotating arm away from the rotating shaft. One end of the connecting rod is hinged to the first rotating arm, and the other end of the connecting rod is hinged to the second rotating arm. The line connecting the two rotating shafts, the first rotating arm, the second rotating arm, and the connecting rod form a parallelogram.

[0014] Optionally, a self-lubricating bushing is provided at the end of the rotating shaft located on the frame. The self-lubricating bushing is fixedly connected to the frame and rotatably connected to the rotating shaft.

[0015] Optionally, the inner sidewall of the frame is fixedly connected to limit strips on both sides of the gate, and when the gate is in a closed state, the sidewall of the gate abuts against the limit strips.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The worm gear damper uses a worm gear for transmission. When the worm lead angle is less than the equivalent friction angle between the meshing teeth, it has a self-locking function, which can fix the gate in any position and realize stepless adjustment and reverse self-locking.

[0018] 2. The meshing teeth of the worm gear have line contact, resulting in a large load-bearing capacity and a large transmission ratio, making it suitable for larger dampers.

[0019] 3. The worm gear motion is equivalent to a screw drive, which is smooth and has low noise. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a worm gear damper in an embodiment of this application.

[0021] Figure 2 This is an exploded view of a worm gear damper according to an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the structure of a worm gear damper in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the structure at the pointer scale position of a worm gear damper in an embodiment of this application.

[0024] Figure 5 This is a schematic diagram of the gate plate of a worm gear damper in an embodiment of this application.

[0025] Figure 6 This is a schematic diagram of the connection structure between the upper and lower pressure plates of a worm gear damper in an embodiment of this application.

[0026] Figure 7 This is a schematic diagram of the frame structure of multiple gate plates of a worm gear damper in an embodiment of this application.

[0027] Figure 8 This is a schematic diagram of the connection structure of multiple gates of a worm gear damper in an embodiment of this application.

[0028] Figure 9 This is a schematic diagram of the linkage component of a worm gear damper in an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Rotating shaft; 12. Housing; 121. Worm gear; 122. Worm; 123. Sleeve; 124. Handwheel control lever; 125. Pointer; 126. Dial; 2. Gate plate; 21. Upper pressure plate; 211. First curved section; 212. First straight section; 22. Lower pressure plate; 221. Second curved section; 222. Second straight section; 223. First sealing plate; 224. Second sealing plate; 3. Linkage assembly; 31. First rotating arm; 32. Second rotating arm; 33. Connecting rod. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0032] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0033] This application discloses a worm gear damper. (Refer to...) Figure 1 , Figure 2 A worm gear damper includes a frame 1, which is rectangular in structure. One end of the frame 1 is an air inlet, and the side of the frame 1 opposite to the air inlet is an air outlet. The direction from the air inlet to the air outlet is the air duct direction of the damper. The horizontal extension direction perpendicular to the air duct direction is the length direction of the frame 1.

[0034] A rotating shaft 11 is horizontally arranged inside the frame 1, with its axis oriented along the length of the frame 1. One end of the rotating shaft 11 is fitted with a self-lubricating sleeve, which is fixedly connected to the inner wall of the frame 1. The other end of the self-lubricating sleeve is for the rotating shaft 11 to extend into, and the rotating shaft 11 is rotatably connected to the self-lubricating sleeve. The end of the rotating shaft 11 facing away from the self-lubricating sleeve extends from the side wall of the frame, and the rotating shaft 11 is rotatably connected to the frame.

[0035] Reference Figure 3 , Figure 4 A housing 12 is fixedly connected to the outer wall of the frame 1 at a position relative to the rotating shaft 11, and the end of the rotating shaft 11 extends into the interior of the housing 12. A worm gear 121 is rotatably connected inside the housing 12. The worm gear 121 is coaxially arranged with the rotating shaft 11 and fixedly connected to it, and the worm gear 121 can drive the rotating shaft 11 to rotate. A worm 122 is meshed with one side of the worm gear 121, and the worm 122 extends out from the interior of the housing 12 and is rotatably connected to the housing 12.

[0036] A sleeve 123 is fixedly connected to the outer end of the worm gear 122 located on the housing 12. The sleeve 123 is coaxially arranged with the worm gear 122, and a handwheel control lever 124 is fixedly connected to the end of the sleeve 123 opposite to the worm gear 122. The handwheel control lever 124 includes a lever body, the end of which extends into the sleeve 123 and is fixed relative to it by a pin. A handwheel part is fixedly connected to the end of the lever body opposite to the sleeve 123, and the handwheel part is coaxially arranged with the lever body. By rotating the handwheel part, the lever body part is driven to rotate, which in turn drives the worm gear 122 to rotate through the sleeve 123. The worm gear 122 drives the worm wheel 121, which is meshed with it, to rotate, so that the worm wheel 121 drives the rotating shaft 11 to rotate.

[0037] Because the lead angle of the worm 122 is smaller than the equivalent friction angle between the teeth of the worm wheel 121, it has a self-locking function, which can fix the rotating shaft 11 in any position to achieve stepless adjustment and reverse self-locking; the meshing tooth surfaces of the worm wheel 121 and worm 122 are in line contact, which has a large load-bearing capacity and can obtain a large transmission ratio, and can be used for larger dampers; the movement of the worm 122 is equivalent to a screw drive, which is smooth and has low noise.

[0038] A pointer 125 is also provided on the outer wall of the housing 12. The rotation center of the pointer 125 is coaxially arranged with the turbine and fixedly connected. When the worm gear 121 rotates, it can synchronously drive the pointer 125 to rotate on the outer wall of the housing 12. A scale 126 is also provided on the outer wall of the housing 12 on the side pointed to by the pointer 125. The end of the pointer 125 points to the scale 126. By rotating the handwheel control lever 124, the pointer 125 rotates with the worm gear 121, indicating the change of the scale on the scale 126, thus vividly and intuitively reflecting the angle of the damper 2, and achieving precise adjustment of the air volume in the pipeline.

[0039] Reference Figure 5 , Figure 6 A gate plate 2 is sleeved on the outside of the rotating shaft 11. The gate plate 2 includes an upper pressure plate 21 and a lower pressure plate 22 arranged opposite to each other. The upper pressure plate 21 includes a first curved portion 211 opposite to the rotating shaft 11, and a first straight portion 212 is fixedly connected to both sides of the first curved portion 211. The lower pressure plate 22 includes a second curved portion 221 opposite to the rotating shaft 11, and a second straight portion 222 is fixedly connected to both sides of the second curved portion 221. The first curved portion 211 and the second curved portion 221 are opposite to each other, and the first straight portion 212 and the second straight portion 222 are opposite to each other. The first curved portion 211 and the second curved portion 221 sleeve the rotating shaft 11 inside. The first straight portion 212 and the second straight portion 222 abut against each other and are fixedly connected by bolts, thereby clamping and fixing the rotating shaft 11 through the first curved portion 211 and the second curved portion 221.

[0040] A first sealing plate 223 and a second sealing plate 224 are fixedly connected to the end side wall of the lower pressure plate 22 away from the rotating shaft 11. The first sealing plate 223 extends toward a first side of the lower pressure plate 22, and the second sealing plate 224 extends toward a second side of the lower pressure plate 22. The first side direction and the second side direction are respectively located on opposite side walls of the lower pressure plate 22. In some embodiments, the first sealing plate 223 extends upward toward the lower pressure plate 22, and the extension direction is toward the outside of the lower pressure plate 22. The second sealing plate 224 extends downward toward the lower pressure plate 22, and the extension direction is toward the outside of the lower pressure plate 22. The first sealing plate 223 and the second sealing plate 224 are arranged in parallel.

[0041] In some embodiments, a gate 2 is disposed inside the frame 1, and a limiting strip is fixedly connected to the side wall of the frame 1 at a position relative to the gate 2, the limiting strip being disposed along the length direction of the frame 1. When the gate 2 is rotated to the closed state by the drive of the rotating shaft 11, the first sealing plate 223 and the second sealing plate 224 on the gate 2 respectively abut against the limiting strips on both sides of the frame 1, thereby completely closing the opening of the frame 1.

[0042] Reference Figure 7 , Figure 8 In other embodiments, multiple gate plates 2 are arranged inside the frame 1, and the multiple gate plates 2 are equidistant along the height direction of the frame 1. When two gate plates 2 are in a closed state, the first sealing piece 223 on one gate plate 2 abuts against the second sealing piece 224 on the other gate plate 2. Since the first sealing piece 223 and the second sealing piece 224 are arranged in parallel, the sidewalls of the first sealing piece 223 and the second sealing piece 224 on adjacent gate plates 2 can completely abut and seal, thereby improving the sealing of the air duct inside the frame 1.

[0043] Reference Figure 7 , Figure 9 A linkage assembly 3 is installed between two adjacent gate plates 2. The linkage assembly 3 drives the two gate plates 2 connected to it to rotate synchronously. One of the gate plates 2 connected to the linkage assembly 3 is the active part that rotates actively. The other gate plate 2 moves under the drive of the linkage assembly 3 to form the driven part. Therefore, the rotation of the active part drives the linkage assembly 3 to rotate, and the linkage assembly 3 drives the driven part to rotate synchronously.

[0044] The linkage assembly 3 includes a first rotating arm 31 and a second rotating arm 32 arranged opposite to each other. The end of the first rotating arm 31 is fixedly connected to one of the rotating shafts 11, and the end of the second rotating arm 32 is fixedly connected to the other rotating shaft 11. A connecting rod 33 is hinged to the end of the first rotating arm 31 opposite to the rotating shaft 11. The end of the connecting rod 33 opposite to the first rotating arm 31 is hinged to the second rotating arm 32, and the hinge end of the second rotating arm 32 and the connecting rod 33 is located at the end opposite to the rotating shaft 11. A parallelogram structure is formed by the line connecting the two rotating shafts 11, the first rotating arm 31, the second rotating arm 32, and the connecting rod 33. When the rotating shaft 11 in the driving part rotates, the rotating shaft 11 drives the first rotating arm 31 to rotate, which in turn drives the connecting rod 33 to move. The connecting rod 33 drives the second rotating arm 32 to rotate at the same speed as the first rotating arm 31, which in turn drives the rotating shaft 11 in the driven part to rotate.

[0045] In this application, the term "multiple" refers to at least two or more, unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A worm gear damper door, characterized by: The utility model provides a kind of shutter, including frame (1), the inside rotation connection of frame (1) has shutter (2), the fixed connection of shutter (2) has rotating shaft (11), the end of rotating shaft (11) is from the side wall of frame (1) and projects, frame (1) is provided with the worm gear drive assembly of driving rotating shaft (11) rotation; The worm gear drive assembly includes a housing (12), a worm gear (121) is rotatably connected inside the housing (12), the worm gear (121) is coaxially fixedly connected with the rotating shaft (11), one side of the worm gear (121) is engaged with a worm (122), and the end of the worm (122) is fixedly connected to the outside end of the housing (12). The worm (122) is fixedly connected to the outside end of the housing (12), and a sleeve (123) is fixedly connected inside the sleeve (123). The outside wall of the housing (12) is provided with a pointer (125), the rotation center of the pointer (125) is coaxially fixedly connected with the worm gear (121), and the housing (12) is provided with a scale disc (126) relative to the pointer (125). The end of the pointer (125) points to the scale disc (126). The shutter (2) includes an upper pressing plate (21) and a lower pressing plate (22), the first curved portion (211) is provided relative to the rotating shaft (11), the second curved portion (221) is provided relative to the rotating shaft (11), the first curved portion (211) and the second curved portion (221) are sleeved outside the rotating shaft (11), and the upper pressing plate (21) and the lower pressing plate (22) are fixedly connected. One end of the lower pressing plate (22) is fixedly connected with a first sealing sheet (223), the other end of the lower pressing plate (22) is fixedly connected with a second sealing sheet (224), the first sealing sheet (223) extends towards the first side of the lower pressing plate (22), the second sealing sheet (224) extends towards the second side of the lower pressing plate (22), and the first sealing sheet (223) and the second sealing sheet (224) are parallel. A plurality of shutters (2) are provided, and a linkage assembly (3) is provided between the plurality of shutters (2) to drive the plurality of shutters (2) to rotate synchronously. The linkage assembly (3) includes oppositely arranged first and second rotating arms (31) and (32), the first and second rotating arms (31) and (32) are provided with a connecting rod (33) at one end away from the rotating shaft (11), one end of the connecting rod (33) is hingedly connected with the first rotating arm (31), the other end of the connecting rod (33) is hingedly connected with the second rotating arm (32), and the connecting line between the two rotating shafts (11), the first and second rotating arms (31) and (32), and the connecting rod (33) form a parallelogram.

2. The worm gear register according to claim 1, characterized in that: The end of the rotating shaft (11) located on the frame (1) is provided with a self-lubricating sleeve, the self-lubricating sleeve is fixedly connected with the frame (1), and the self-lubricating sleeve is rotationally connected with the rotating shaft (11).

3. The worm gear register according to claim 1, wherein: The inner side wall of the frame (1) is fixedly connected with a limiting pressing strip on both sides of the shutter (2), and when the shutter (2) is in a closed state, the side wall of the shutter (2) abuts against the limiting pressing strip.

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