Limiting type actuator

Abstract

The utility model discloses a limit type actuator, relates to electric actuator technical field, the limit type actuator includes first power mechanism, transmission mechanism and limit mechanism, limit mechanism includes mounting rack and slider, first limit groove can limit the slider along the vertical direction movement stroke to limit the rotation angle of first transmission shaft, and the first transmission shaft is driven by the first limit groove to limit the rotation angle of second transmission shaft. The first limiting groove can limit the opening angle of the ventilation window. The first power mechanism is adopted to drive the first transmission shaft and the connecting assembly to rotate, so that the opening angle of the ventilation window is limited, the structure is simple, and operation is convenient and fast; the opening angle of the ventilation window can be limited by selecting the first limiting grooves with different lengths, so that the application range of the limiting type actuator is effectively expanded; the limiting type actuator can be installed on the outer wall of the granary of the grain depot, the working environment of workers is effectively improved, the body health of the workers is benefited, and the requirements of users can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, in particular to a position-limiting actuator. Background Art

[0002] Grain is an important strategic material related to the national economy and people's livelihood, as well as the national economic security. It is also the most basic living material for the people. Grain storage is a major issue related to the national economy and people's livelihood. Ventilation is an indispensable management method in the grain storage process. By setting ventilation windows and shaft windows, the heat in the grain warehouse can be dissipated to prevent grain from rotting due to excessive temperature. At present, the ventilation windows and shaft windows of the grain warehouse are opened or closed by manual entry, which is inconvenient to operate. In addition, due to the poor working environment in the grain warehouse, the staff entering the grain warehouse will also affect their health, which cannot meet the needs of users.

[0003] Therefore, how to make the operation of opening or closing ventilation windows, shaft windows and other equipment in grain depots and granaries more convenient is a problem that urgently needs to be solved. Utility Model Content

[0004] The main purpose of the utility model is to provide a limit type actuator, aiming to solve the problem of how to make the operation of opening or closing ventilation windows, shaft windows and other equipment of a grain depot and grain bin more convenient.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a limit type actuator, and the limit type actuator comprises:

[0006] The first power mechanism;

[0007] A transmission mechanism, the transmission mechanism comprising a first transmission shaft and a connecting assembly, one end of the first transmission shaft is connected to the output end of the first power mechanism, the other end of the first transmission shaft is transmission-connected to the connecting assembly, and one end of the connecting assembly away from the first transmission shaft is rotationally connected to the vent window;

[0008] A limiting mechanism, wherein the limiting mechanism includes a mounting frame and a slider, the slider is threadedly connected to the first transmission shaft, a first limiting groove is provided on the mounting frame, the slider is slidably matched with the first limiting groove, and the first limiting groove can limit the moving stroke of the slider in the vertical direction to limit the rotation angle of the first transmission shaft, so that the first limiting groove can limit the opening angle of the ventilation window.

[0009] In one embodiment, the limiting mechanism further includes a first limiting component, the first limiting component is connected to the mounting bracket, and the first limiting component is used to limit the upper limit of the travel of the sliding block relative to the first limiting groove.

[0010] In one embodiment, the first limiting assembly includes a first mounting block, a first adjusting member and a first limiting rod that are interconnected, the first mounting block is rotatably mounted on the mounting frame, the first adjusting member is used to limit the rotation of the first mounting block relative to the mounting frame, and the first limiting rod is used to abut against the slider to limit the upward movement of the slider relative to the first limiting groove.

[0011] In one embodiment, the mounting frame is further provided with a second limiting groove, and one end of the sliding block away from the first limiting groove is slidably engaged with the second limiting groove, and the second limiting groove can limit the moving stroke of the sliding block.

[0012] In one embodiment, the limiting mechanism further includes a second limiting component, the second limiting component is connected to the mounting bracket, and the second limiting component is used to limit the lower limit of the travel of the sliding block relative to the second limiting groove.

[0013] In one embodiment, the mounting frame includes a first bracket, a second bracket and a base plate, the two ends of the first bracket are respectively slidably connected to the first power mechanism and the base plate, the two ends of the second bracket are respectively slidably connected to the first power mechanism and the base plate, and the first bracket and the second bracket are spaced apart to form the first limit groove and the second limit groove between the first bracket and the second bracket.

[0014] In one embodiment, the connecting assembly includes a vertical rod, a first connecting rod and a second connecting rod, the first transmission shaft is transmission-connected to the vertical rod, one end of the first connecting rod is connected to the vertical rod, the other end of the first connecting rod is hinged to the second connecting rod, and one end of the second connecting rod away from the first connecting rod is hinged to the ventilation window, and the first power mechanism drives the second connecting rod to rotate through the first transmission shaft, the vertical rod and the first connecting rod.

[0015] In one embodiment, the mounting frame is further provided with a first through hole, and the first through hole is used for allowing the first transmission shaft to pass through.

[0016] In one embodiment, the first power mechanism includes a motor, a transmission and a worm gear assembly, the output end of the motor is drivingly connected to the transmission, the output end of the transmission is connected to the worm gear assembly, the output end of the worm gear assembly is drivingly connected to the first transmission shaft, the motor drives the first transmission shaft to rotate through the transmission and the worm gear assembly, and the mounting frame is connected to the worm gear assembly.

[0017] In one embodiment, the limit type actuator also includes a second power mechanism, the second power mechanism includes a crank and a second transmission shaft, one end of the second transmission shaft is connected to the crank, and the other end of the second transmission shaft is connected to an end of the transmission away from the motor, and the crank drives the first transmission shaft to rotate through the second transmission shaft, the transmission and the worm gear assembly.

[0018] In an embodiment of the utility model, the first power mechanism is used to drive the connecting component to rotate through the first transmission shaft, and the connecting component can be rotatably connected to the glass or window frame of the ventilation window, thereby limiting the opening angle of the ventilation window, and the limiting mechanism is used to limit the rotation range of the first transmission shaft through a slider and a first limiting groove, and the slider is threadedly connected to the first transmission shaft and slidingly cooperates with the first limiting groove. When the first transmission shaft rotates, it can drive the slider to move in the vertical direction along the first limiting groove. Since the length of the first limiting groove is limited, when the slider moves to the upper end or lower end of the first limiting groove, the first limiting groove can limit the movement stroke of the slider in the vertical direction, thereby limiting the first transmission shaft from continuing to rotate relative to the slider, so that the connecting component stops rotating, thereby limiting the ventilation window. The opening angle of the wind window can realize the opening or closing of the ventilation window, and the length of the first limit groove can be selected according to actual needs, which can be suitable for the opening or closing of ventilation windows and axis windows and other equipment of various sizes, effectively expanding the application scope of the limit type actuator; compared with the operation of manually entering the granary to open or close the ventilation windows, axis windows and other equipment of the granary, the opening angle of the ventilation window is limited by the limit type actuator, which has a simple structure and is convenient and quick to operate, and the limit type actuator can be installed on the outer wall of the granary, so that the staff does not have to enter the granary to complete the opening or closing of the ventilation windows, axis windows and other equipment, effectively improving the working environment of the staff, beneficial to the health of the staff, and can meet the needs of users. The embodiment of the utility model adopts a first power mechanism to drive the first transmission shaft and the connecting assembly to rotate, thereby limiting the opening angle of the ventilation window. The structure is simple and the operation is convenient and quick. The opening angle of the ventilation window can be limited by selecting first limit grooves of different lengths. It can be suitable for opening or closing ventilation windows and shaft windows of various sizes and other equipment, effectively expanding the application scope of the limit type actuator. The limit type actuator can be installed on the outer wall of the granary of the grain depot, without the need for manual entry into the granary for operation, effectively improving the working environment of the staff, benefiting the health of the staff, and meeting the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the limit type actuator of the utility model;

[0021] Figure 2 It is a structural schematic diagram of an embodiment of a limit mechanism of a limit type actuator of the utility model;

[0022] Figure 3 This is a schematic structural diagram from another perspective of an embodiment of the limiting mechanism of the limiting actuator of the utility model.

[0023] Description of Figure Numbers:

[0024] 100. Position-limiting actuator; 1. first power mechanism; 11. motor; 12. transmission; 13. worm gear assembly; 2. transmission mechanism; 21. first transmission shaft; 22. connecting assembly; 221. vertical rod; 222. first connecting rod; 223. second connecting rod; 3. position-limiting mechanism; 31. slider; 32. mounting bracket; 321. first bracket; 3211. first mounting hole; 3212. first slide groove; 322. second bracket; 3221. second mounting hole; 3222, second slide groove; 323, bottom plate; 3231, first through hole; 324, first limiting groove; 325, second limiting groove; 33, first limiting assembly; 331, first mounting block; 332, first limiting rod; 333, first fastener; 334, first adjusting member; 34, second limiting assembly; 341, second mounting block; 342, second limiting rod; 343, second fastener; 344, second adjusting member; 4, second power mechanism; 41, second transmission shaft;

[0025] 200. Ventilation windows.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, and back), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] The main purpose of the utility model is to propose a limit-type actuator 100, which aims to solve the problem of how to make the operation of opening or closing the ventilation window 200, shaft window and other equipment of the grain depot and grain bin more convenient.

[0031] The utility model provides a position-limiting actuator 100 .

[0032] See also Figures 1 to 3In one embodiment of the utility model, the limit actuator 100 includes a first power mechanism 1, a transmission mechanism 2 and a limit mechanism 3. The transmission mechanism 2 includes a first transmission shaft 21 and a connecting assembly 22. One end of the first transmission shaft 21 is connected to the output end of the first power mechanism 1, and the other end of the first transmission shaft 21 is transmission-connected to the connecting assembly 22. The end of the connecting assembly 22 away from the first transmission shaft 21 is rotationally connected to the ventilation window 200; the limit mechanism 3 includes a mounting frame 32 and a slider 31. The slider 31 is threadedly connected to the first transmission shaft 21. A first limit groove 324 is provided on the mounting frame 32. The slider 31 slides in cooperation with the first limit groove 324. The first limit groove 324 can limit the moving stroke of the slider 31 in the vertical direction to limit the rotation angle of the first transmission shaft, so that the first limit groove 324 can limit the opening angle of the ventilation window 200.

[0033] In the embodiment of the utility model, the first power mechanism 1 is used to drive the connecting component 22 to rotate through the first transmission shaft 21. The connecting component 22 can be rotatably connected to the glass or window frame of the ventilation window 200, thereby limiting the opening angle of the ventilation window 200. The limiting mechanism 3 is used to limit the rotation angle of the first transmission shaft 21 through the slider 31 and the first limiting groove 324. The slider 31 is threadedly connected to the first transmission shaft 21 and slidably cooperates with the first limiting groove 324. When the first transmission shaft 21 rotates, it can drive the slider 31 to move in the vertical direction along the first limiting groove 324. Since the length of the first limiting groove 324 is limited, when the slider 31 moves to the upper end or the lower end of the first limiting groove 324, the first limiting groove 324 can limit the movement stroke of the slider 31 in the vertical direction, thereby limiting the rotation angle of the first transmission shaft 21, so that the connecting component 22 Stop rotating, thereby limiting the opening angle of the ventilation window 200, and realizing the opening or closing of the ventilation window 200, and the length of the first limit groove 324 can be selected according to actual needs, and can be suitable for the opening or closing of ventilation windows 200 and shaft windows and other equipment of various sizes, effectively expanding the application scope of the limit type actuator 100; compared with the operation of manually entering the granary of the granary to open or close the ventilation windows 200, shaft windows and other equipment of the granary, the opening angle of the ventilation window 200 is limited by the limit type actuator 100, which has a simple structure and is convenient and quick to operate, and the limit type actuator 100 can be installed on the outer wall of the granary of the granary, so that the staff does not have to enter the granary to complete the opening or closing of the ventilation windows 200, shaft windows and other equipment, effectively improving the working environment of the staff, beneficial to the health of the staff, and can meet the needs of users.

[0034] The technical solution of the utility model adopts the first power mechanism 1 to drive the first transmission shaft 21 and the connecting component 22 to rotate, thereby limiting the opening angle of the ventilation window 200. The structure is simple and the operation is convenient and quick. The opening angle of the ventilation window 200 can be limited by selecting the first limit groove 324 of different lengths. It can be applicable to the opening or closing of ventilation windows 200 and shaft windows of various sizes and other equipment, effectively expanding the application scope of the limit type actuator 100. The limit type actuator 100 can be installed on the outer wall of the granary of the grain depot, without the need for manual entry into the granary for operation, which effectively improves the working environment of the staff, is beneficial to the health of the staff, and can meet the needs of users.

[0035] In one embodiment, the limiting mechanism 3 also includes a first limiting component 33, which is connected to the mounting frame 32, and the first limiting component 33 is used to limit the upper limit of the travel of the slider 31 relative to the first limiting groove 324; specifically, the first limiting component 33 is connected to the mounting frame 32, and the slider 31 can move in the vertical direction relative to the first limiting groove 324. When the slider 31 moves upward relative to the first limiting groove 324 until it abuts against the first limiting component 33, the first limiting component 33 can limit the slider 31 from continuing to move upward relative to the first limiting groove 324. When the slider 31 moves downward relative to the first limiting groove 324 to the lower end of the first limiting groove 324, the lower end of the first limiting groove 324 can limit the slider 31 from continuing to move downward. The distance between the first limiting component 33 and the lower end of the first limiting groove 324 in the vertical direction is the opening angle range of the ventilation window 200.

[0036] In one embodiment, the first limiting assembly 33 includes a first mounting block 331, a first adjusting member and a first limiting rod 332. The first mounting block 331 is connected to the first limiting rod 332. The first mounting block 331 is rotatably mounted on the mounting frame 32. The first adjusting member 334 is used to limit the rotation of the first mounting block 331 relative to the mounting frame 32. The first limiting rod 332 is used to abut against the slider 31 to limit the upward movement of the slider 31 relative to the first limiting groove 324. Specifically, the mounting frame 32 is provided with a first mounting hole 3211 and a first slide groove 3212. The first slide groove 3212 is used to adjust the rotation range of the first mounting block 331, so as to realize the precise operation of the limiting actuator 100. The first mounting block 331 is provided with a second through hole and a third through hole, and the second through hole is arranged corresponding to the first mounting hole 3211, and the third through hole is arranged corresponding to the first slide groove 3212, the first limiting assembly 33 also includes a first fastener 333 and a first adjusting member 334, the first fastener 333 is used to pass through the second through hole and the first mounting hole 3211 so that the first fastener 333 can limit the movement of the first mounting block 331 relative to the mounting frame 32, the first adjusting member 334 is used to pass through the third through hole and the first slide groove 3212 so that the first adjusting member 334 can limit the rotation of the first mounting block 331 relative to the mounting frame 32, and the first adjusting member 334 can slide along the first slide groove 3212, and the first adjusting member 334 can rotate to press against the first mounting block 331 to limit the angle of the first limiting rod 332. In this embodiment, the structure of the first mounting block 331 and the first limiting rod 332 can be realized by using a limiter in the prior art, and the first fastener 333 and the first adjusting member 334 can both be bolts, or other structures, which are not limited in this embodiment.

[0037] In one embodiment, the mounting frame 32 is further provided with a second limiting groove 325, and one end of the slider 31 away from the first limiting groove is slidably matched with the second limiting groove 325, and the second limiting groove 325 can limit the moving stroke of the slider 31; specifically, the second limiting groove 325 and the first limiting groove 324 are respectively arranged on both sides of the mounting frame 32, and the first limiting groove 324 and the second limiting groove 325 are arranged opposite to each other, and the two ends of the slider 31 are respectively slidably matched with the first limiting groove 324 and the second limiting groove 325, and the first limiting groove 324 and the second limiting groove 325 can both limit the moving stroke of the slider 31. When the first limiting groove 324 cannot limit the moving stroke of the slider 31 due to damage or breakage, the moving stroke of the slider 31 can still be limited by the second limiting groove 325, so that the limiting type actuator 100 can still maintain reliable operation.

[0038] In one embodiment, the limiting mechanism 3 also includes a second limiting component 34, which is connected to the mounting frame 32, and the second limiting component 34 is used to limit the lower limit of the travel of the slider 31 relative to the second limiting groove 325; specifically, the second limiting component 34 is connected to the mounting frame 32, and the slider 31 can move in the vertical direction relative to the second limiting groove 325. When the slider 31 moves upward relative to the first limiting groove 324 until it abuts against the first limiting component 33, the first limiting component 33 can limit the slider 31 from continuing to move upward relative to the first limiting groove 324. When the slider 31 moves downward relative to the second limiting groove 325 until it abuts against the second limiting component 34, the second limiting component 34 can limit the slider 31 from continuing to move downward relative to the second limiting groove 325. The distance between the first limiting component 33 and the second limiting component 34 in the vertical direction is the opening angle range of the ventilation window 200.

[0039] In this embodiment, the second limiting assembly 34 includes a second mounting block 341, a second adjusting member and a second limiting rod 342. The second mounting block 341 and the second limiting rod 342 are connected. The second mounting block 341 is rotatably mounted on the mounting frame 32. The second adjusting member 344 is used to limit the rotation of the second mounting block 341 relative to the mounting frame 32. The second limiting rod 342 is used to abut against the slider 31 to limit the downward movement of the slider 31 relative to the second limiting groove 325. Specifically, the mounting frame 32 is provided with a second mounting hole 3221 and a second slide groove 3222. The second slide groove 3222 is used to adjust the rotation range of the second mounting block 341, so as to realize the precise operation of the limiting actuator 100. The second mounting block 341 is provided with a fourth through hole and the fifth through hole, and the fourth through hole is arranged corresponding to the second mounting hole 3221, and the fifth through hole is arranged corresponding to the second slide groove 3222, the second limiting assembly 34 also includes a second fastener 343 and a second adjusting member 344, the second fastener 343 is used to pass through the fourth through hole and the second mounting hole 3221 so that the second fastener 343 can limit the movement of the second mounting block 341 relative to the mounting frame 32, the second adjusting member 344 is used to pass through the fifth through hole and the second slide groove 3222 so that the second adjusting member 344 can limit the rotation of the second mounting block 341 relative to the mounting frame 32, and the second adjusting member 344 can slide along the second slide groove 3222 and the second adjusting member 344 can rotate to press against the second mounting block 341 to limit the angle of the second limiting rod 342. In the present embodiment, the second limit assembly 34 has the same structure as the first limit assembly 33, the structure of the second mounting block 341 and the second limit rod 342 can be realized by using the limiter in the prior art, the second fastener 343 and the second adjustment member 344 can both use bolts or other structures, which is not limited in the present embodiment.

[0040] In one embodiment, the mounting frame 32 includes a first bracket 321, a second bracket 322 and a base plate 323, the two ends of the first bracket 321 are slidably connected to the first power mechanism 1 and the base plate 323 respectively, the two ends of the second bracket 322 are slidably connected to the first power mechanism 1 and the base plate 323 respectively, and the first bracket 321 and the second bracket 322 are spaced apart so that a first limiting groove 324 and a second limiting groove 325 are formed between the first bracket 321 and the second bracket 322; specifically, since the sizes of the ventilation windows 200, shaft windows and other equipment of the granary granary are various, correspondingly, the sizes of the first transmission shaft 21 and the slider 31 are also different, in order to adjust the first limiting groove The widths of the first limit groove 324 and the second limit groove 325 are so that the first limit groove 324 and the second limit groove 325 can be suitable for sliders 31 of various sizes. The two ends of the first bracket 321 are respectively slidably connected to the first power mechanism 1 and the base plate 323, and the two ends of the second bracket 322 are also respectively slidably connected to the first power mechanism 1 and the base plate 323. By adjusting the position of the first bracket 321 relative to the first power mechanism 1 and the base plate 323, and the position of the second bracket 322 relative to the first power mechanism 1 and the base plate 323, the widths of the first limit groove 324 and the second limit groove 325 are adjusted to adapt to sliders 31 of various sizes, thereby expanding the scope of application of the limit type actuator 100.

[0041] In this embodiment, a first mounting hole 3211 and a first slide groove 3212 are provided on one side of the first bracket 321, and a second mounting hole 3221 and a second slide groove 3222 are provided on the other side of the first bracket 321. The first mounting block 331 and the second mounting block 341 are rotatably installed on both sides of the first bracket 321, so that the first limiting rod 332 and the second limiting rod 342 can limit the moving stroke of the slider 31 in the vertical direction, limit the rotation of the first transmission shaft 21 relative to the slider 31, and thus limit the opening angle of the ventilation window 200.

[0042] According to an embodiment of the utility model, a first mounting hole 3211 and a first slide groove 3212 are provided on one side of the first bracket 321, a second mounting hole 3221 and a second slide groove 3222 are provided on the same side of the second bracket 322, the first mounting block 331 is rotatably installed on the first bracket 321, and the second mounting block 341 is rotatably installed on the second bracket 322, so that the first limiting rod 332 and the second limiting rod 342 can limit the moving stroke of the slider 31 in the vertical direction, limit the rotation of the first transmission shaft 21 relative to the slider 31, thereby limiting the opening angle of the ventilation window 200.

[0043] According to another embodiment of the utility model, a first mounting hole 3211 and a first slide groove 3212 are provided on one side of the first bracket 321, and a second mounting hole 3221 and a second slide groove 3222 are provided on the other side of the second bracket 322. The first mounting block 331 can be rotatably installed on the first bracket 321, and the second mounting block 341 can be rotatably installed on the second bracket 322, so that the first limiting rod 332 and the second limiting rod 342 can limit the moving stroke of the slider 31 in the vertical direction, limit the rotation of the first transmission shaft 21 relative to the slider 31, and thus limit the opening angle of the ventilation window 200.

[0044] In one embodiment, the connecting assembly 22 includes a vertical rod 221, a first connecting rod 222 and a second connecting rod 223. The first transmission shaft 21 is connected to the vertical rod 221 in a transmission manner. One end of the first connecting rod 222 is connected to the vertical rod 221, and the other end of the first connecting rod 222 is hinged to the second connecting rod 223. One end of the second connecting rod 223 away from the first connecting rod 222 is hinged to the vent 200. The first power mechanism 1 drives the second connecting rod 223 to rotate through the first transmission shaft 21, the vertical rod 221 and the first connecting rod 222. Specifically, the first transmission shaft 21 is connected to one end of the vertical rod 221, and the length of the vertical rod 221 can be The height of the ventilation window 200 can be selected as needed, one end of the first connecting rod 222 is connected to the other end of the vertical rod 221, the other end of the first connecting rod 222 is hinged to the second connecting rod 223, and the end of the second connecting rod 223 away from the first connecting rod 222 can be hinged to the glass or window frame of the ventilation window 200. The lengths of the first connecting rod 222 and the second connecting rod 223 can be selected as needed according to the width of the ventilation window 200. The first power mechanism 1 drives the first transmission shaft 21 to rotate, and the first transmission shaft 21 drives the vertical rod 221, the first connecting rod 222 and the second connecting rod 223 to rotate, thereby limiting the opening angle of the ventilation window 200.

[0045] In one embodiment, a first through hole 3231 is further provided on the mounting frame 32, and the first through hole 3231 is used for the first transmission shaft 21 to pass through; specifically, a first through hole 3231 is provided on the bottom plate 323 of the mounting frame 32, and the first through hole 3231 is used for the first transmission shaft 21 to pass through, so that the rotation of the first transmission shaft 21 can be observed through the first through hole 3231, so as to facilitate understanding of the operating status of the limit type actuator 100.

[0046] In one embodiment, the first power mechanism 1 includes a motor 11, a transmission 12 and a worm gear assembly 13. The output end of the motor 11 is connected to the transmission 12, the output end of the transmission 12 is connected to the worm gear assembly 13, the output end of the worm gear assembly 13 is connected to the first transmission shaft 21, the motor 11 drives the first transmission shaft 21 to rotate through the transmission 12 and the worm gear assembly 13, and the mounting frame 32 is connected to the worm gear assembly 13; specifically, the motor 11 is used to provide continuous and stable power output, and the transmission 12 is used to change the transmission ratio. In order to meet the needs of opening or closing the ventilation window 200, the worm gear assembly 13 is used to change the output torque. By setting the worm gear assembly 13, the transmission can also be smoother and more reliable. The worm gear assembly 13 includes a worm wheel and a worm. The output end of the transmission 12 is connected to the worm gear transmission, the worm wheel is meshed with the worm, and the worm is connected to the first transmission shaft 21. The worm gear assembly 13 is self-locking. When the transmission stops, the worm will not drive the worm wheel to rotate in the opposite direction, which can ensure the stability of the limit-type actuator 100, thereby maintaining the open or closed state of the ventilation window 200.

[0047] In one embodiment, the limit type actuator 100 also includes a second power mechanism 4, which includes a crank (not shown) and a second transmission shaft 41, one end of the second transmission shaft 41 is connected to the crank, and the other end of the second transmission shaft 41 is connected to the end of the transmission 12 away from the motor 11, and the crank drives the first transmission shaft 21 to rotate through the second transmission shaft 41, the transmission 12 and the worm gear assembly 13; specifically, the second power mechanism 4 can be used to drive the limit type actuator 100 in a power outage or emergency state, and the staff manually turns the crank to drive the second transmission shaft 41 to rotate, and the second transmission shaft 41 is connected to the transmission 12, and the worm gear assembly 13 is driven to rotate through the transmission 12, so that the first transmission shaft 21 and the connecting assembly 22 rotate to limit the opening angle of the ventilation window 200.

[0048] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A limit type actuator, characterized in that: The limit type actuator comprises: The first power mechanism; A transmission mechanism, the transmission mechanism comprising a first transmission shaft and a connecting assembly, one end of the first transmission shaft is connected to the output end of the first power mechanism, the other end of the first transmission shaft is transmission-connected to the connecting assembly, and one end of the connecting assembly away from the first transmission shaft is rotationally connected to the vent window; A limiting mechanism, wherein the limiting mechanism includes a mounting frame and a slider, the slider is threadedly connected to the first transmission shaft, a first limiting groove is provided on the mounting frame, the slider is slidably matched with the first limiting groove, and the first limiting groove can limit the moving stroke of the slider in the vertical direction to limit the rotation angle of the first transmission shaft, so that the first limiting groove can limit the opening angle of the ventilation window.

2. The limit type actuator according to claim 1, characterized in that: The limiting mechanism further includes a first limiting component, the first limiting component is connected to the mounting bracket, and the first limiting component is used to limit the upper limit of the travel of the sliding block relative to the first limiting groove.

3. The limit actuator according to claim 2, characterized in that: The first limiting assembly includes a first mounting block, a first adjusting member and a first limiting rod, the first mounting block is connected to the first limiting rod, the first mounting block is rotatably mounted on the mounting frame, the first adjusting member is used to limit the first mounting block from rotating relative to the mounting frame, and the first limiting rod is used to abut against the slider to limit the slider from moving upward relative to the first limiting groove.

4. The limit type actuator according to claim 1, characterized in that: The mounting frame is further provided with a second limiting groove, and one end of the sliding block away from the first limiting groove is slidably matched with the second limiting groove, and the second limiting groove can limit the moving stroke of the sliding block.

5. The position limiting actuator according to claim 4, characterized in that: The limiting mechanism further includes a second limiting component, the second limiting component is connected to the mounting bracket, and the second limiting component is used to limit the lower limit of the travel of the sliding block relative to the second limiting groove.

6. The position-limiting actuator according to claim 5, characterized in that: The mounting frame includes a first bracket, a second bracket and a base plate, the two ends of the first bracket are slidably connected to the first power mechanism and the base plate respectively, the two ends of the second bracket are slidably connected to the first power mechanism and the base plate respectively, and the first bracket and the second bracket are spaced apart to form the first limiting groove and the second limiting groove between the first bracket and the second bracket.

7. The limit type actuator according to any one of claims 1 to 6, characterized in that: The connecting assembly includes a vertical rod, a first connecting rod and a second connecting rod. The first transmission shaft is in transmission connection with the vertical rod. One end of the first connecting rod is connected to the vertical rod. The other end of the first connecting rod is hinged to the second connecting rod. One end of the second connecting rod away from the first connecting rod is hinged to the ventilation window. The first power mechanism drives the second connecting rod to rotate through the first transmission shaft, the vertical rod and the first connecting rod.

8. The limit-type actuator according to any one of claims 1 to 6, characterized in that: The mounting frame is also provided with a first through hole, and the first through hole is used for the first transmission shaft to pass through.

9. The limit-type actuator according to any one of claims 1 to 6, characterized in that: The first power mechanism includes a motor, a transmission and a worm gear assembly, the output end of the motor is connected to the transmission, the output end of the transmission is connected to the worm gear assembly, the output end of the worm gear assembly is connected to the first transmission shaft, the motor drives the first transmission shaft to rotate through the transmission and the worm gear assembly, and the mounting frame is connected to the worm gear assembly.

10. The limit type actuator according to claim 9, characterized in that: The limit type actuator also includes a second power mechanism, which includes a crank and a second transmission shaft, one end of the second transmission shaft is connected to the crank, and the other end of the second transmission shaft is connected to an end of the transmission away from the motor, and the crank drives the first transmission shaft to rotate through the second transmission shaft, the transmission and the worm gear assembly.

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