Rotary limiting pneumatic actuator

Abstract

According to the technical scheme, the pneumatic actuator is characterized in that the pneumatic actuator comprises an actuator body and two limiting mechanisms, the two limiting mechanisms are arranged at the two ends of the actuator body respectively, operation openings are formed in the two ends of the actuator body, and each limiting mechanism comprises a guide plate, a sliding rod and a connecting rod; one end of the sliding rod is inserted into the actuator body through the operation opening, and the other end of the sliding rod is detachably connected with the connecting rod. A guide channel penetrates through the guide plate, guide grooves are formed in the two sides of the guide channel, a guide part is arranged at the end, away from the operation opening, of the sliding rod, and the guide part is slidably connected into the guide grooves; according to the pneumatic actuator, when the limiting mechanism does not need to be adjusted, the sliding rod can be detached, and safety during use is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic actuators, and more specifically, it relates to a pneumatic actuator for rotational limiting. Background Technology

[0002] A pneumatic actuator is an actuator that uses gas, usually compressed air, as a power source. It is commonly used to control fluid control equipment such as valves, gates, and ball valves. A pneumatic actuator typically consists of two parts: a pneumatic drive unit and an actuator mechanism. The pneumatic drive unit uses gas energy to push a piston or diaphragm to open and close the valve or actuator mechanism.

[0003] To facilitate control of the drive shaft's rotation angle, the stroke of the pneumatic actuator is controlled by venting. This prevents high-pressure gas from squeezing the cylinder after the pneumatic actuator is limited. Therefore, our company has previously applied for an adjustable limit pneumatic actuator, publication number CN221424043U. By adding a locking structure to the outside, the limit structure is locked, thereby improving the accuracy of the limit. However, this results in sharp protrusions at both ends of the actuator, which may cause danger during use and inconvenience during storage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pneumatic actuator for rotation limit, which can disassemble the sliding rod when the limit mechanism does not need to be adjusted, thus avoiding safety during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic actuator with rotational limiting, comprising an actuator body and a limiting mechanism, wherein two sets of limiting mechanisms are provided and respectively disposed at both ends of the actuator body, and both ends of the actuator body are provided with operating ports, the limiting mechanism comprising a guide plate, a sliding rod and a connecting rod, one end of the sliding rod being inserted into the actuator body through the operating port, and the other end being detachably connected to the connecting rod;

[0006] A guide channel is provided through the guide plate, and guide grooves are provided on both sides of the guide channel. A guide part is provided at the end of the sliding rod away from the operating port, and the guide part is slidably connected in the guide groove.

[0007] An air hole is provided through the middle of the sliding rod.

[0008] The present invention is further configured such that: the guide plate includes a guide seat and a guide block, and the upper end of the guide seat is provided with a flat mounting surface;

[0009] The guide blocks are provided in two sets, and each of the two guide blocks has a guide groove on an adjacent side, forming a guide channel between the two guide blocks.

[0010] The present invention is further configured such that: the guide seat is configured as a quarter-sphere structure, and the first plane of the guide seat is connected to the actuator body, and the second plane of the guide seat faces upward.

[0011] The present invention is further configured such that a handrail groove is provided at the lower end of the guide seat.

[0012] The present invention is further configured such that the connecting rod is T-shaped and is screwed to the sliding rod.

[0013] The present invention is further configured such that: the two guide blocks are provided with sliding grooves communicating with the guide slots, the two guide parts are provided with connecting holes, the guide blocks are provided with connecting bolts, and the connecting bolts pass through the sliding grooves and are connected to the connecting holes.

[0014] The present invention is further configured such that: an indicator groove is provided on the outer side of both sliding grooves, and both indicator grooves are connected to the guide groove;

[0015] Both guide sections have an indicator rod extending from their outer ends, and the indicator rod is slidably connected to the indicator groove.

[0016] The present invention is further configured such that an indicator element is detachably mounted on the indicator rod.

[0017] The present invention is further configured such that: the guide block includes an upper mounting block and a lower mounting block, the lower mounting block is detachably mounted on the guide seat, and the upper mounting block is detachably mounted on the lower mounting block.

[0018] In summary, this utility model has the following beneficial effects: The limiting mechanism is optimized by adopting a two-stage sliding rod design. When the position of the sliding rod needs to be adjusted, the sliding rod is connected to the connecting rod, and the sliding rod is moved by the connecting rod. When no adjustment is needed, the connecting rod is disassembled. At this time, the maximum extension length of the sliding rod will not exceed the guide plate, thus preventing the formation of protrusions at both ends of the actuator and ensuring safety during storage. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of a pneumatic actuator;

[0020] Figure 2 A three-dimensional structural diagram of the actuator body;

[0021] Figure 3 This is a three-dimensional structural diagram of the limiting mechanism;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide plate;

[0023] Figure 5 This is a three-dimensional structural diagram of the sliding rod;

[0024] Figure 6 This is a three-dimensional structural diagram of a piston.

[0025] Reference numerals: 1. Actuator body; 11. Operating port; 2. Limiting mechanism; 3. Guide plate; 31. Guide channel; 32. Guide groove; 33. Guide seat; 331. Handrail groove; 34. Guide block; 341. Sliding groove; 342. Indicator groove; 35. Connecting bolt; 4. Sliding rod; 41. Guide part; 411. Indicator rod; 412. Indicator element; 42. Air hole; 5. Connecting rod. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] Reference Figures 1 to 6 As shown, in order to achieve the above objectives, the present invention provides the following technical solution: a pneumatic actuator for rotational limiting, comprising an actuator body 1 and a limiting mechanism 2, wherein two sets of limiting mechanisms 2 are provided and respectively disposed at both ends of the actuator body 1, and both ends of the actuator body 1 are provided with operating ports 11, the limiting mechanism 2 comprising a guide plate 3, a sliding rod 4 and a connecting rod 5, one end of the sliding rod 4 being inserted into the actuator body 1 through the operating port 11, and the other end being detachably connected to the connecting rod 5;

[0028] A guide channel 31 is provided through the guide plate 3, and guide grooves 32 are provided on both sides of the guide channel 31. A guide part 41 is provided at the end of the sliding rod 4 away from the operation port 11, and the guide part 41 is slidably connected in the guide groove 32.

[0029] An air hole 42 is provided through the middle of the sliding rod 4.

[0030] Firstly, the actuator body 1 is equipped with, as follows Figure 6The piston assembly shown, as mentioned in the prior application, includes a drive shaft, gears, racks, a moving piston, and a return spring. When gas is introduced into the actuator body 1, the moving piston moves to both sides, and at the same time, the rack drives the gears and drive shaft to rotate until it moves into place. Then, the exhaust passage on the moving piston (the exhaust passage may be equipped with a valve to block it; when the sliding rod 4 is inserted into the exhaust passage) will communicate with the air hole 42, so that the internal gas can be vented out through the sliding rod 4. In addition, the other end of the moving piston may optionally be equipped with an exhaust assembly. For a detailed description of the specific structure, please refer to the content of (Publication (Announcement) No.: CN221424043U).

[0031] Based on the above, the limiting mechanism 2 is optimized in this structure by adopting a two-stage sliding rod 4 design. When the position of the sliding rod 4 needs to be adjusted, the sliding rod 4 is connected to the connecting rod 5, and the sliding rod 4 is moved by the connecting rod 5. When no adjustment is needed, the connecting rod 5 is disassembled. At this time, the maximum extension length of the sliding rod 4 will not exceed the guide plate 3, so that no protrusions are formed at both ends of the actuator, and the safety of the storage process is also guaranteed.

[0032] The present invention is further configured such that: the guide plate 3 includes a guide seat 33 and a guide block 34, and the upper end of the guide seat 33 is provided with a flat mounting surface;

[0033] Two sets of guide blocks 34 are provided, and guide grooves 32 are provided on the adjacent side of the two guide blocks 34, forming a guide channel 31 between the two guide blocks 34.

[0034] The design of this structure allows for easy assembly to form the guide channel 31 and facilitates the installation of the sliding rod 4.

[0035] The present invention is further configured such that: the guide seat 33 is configured as a quarter sphere, and the first plane of the guide seat 33 is connected to the actuator body 1, and the second plane of the guide seat 33 faces upward.

[0036] The design of this structure facilitates the machining and design of the guide seat 33.

[0037] The present invention is further configured such that a handrail groove 331 is provided at the lower end of the guide seat 33. This structural design makes reasonable and effective use of the space of the guide seat 33, making it convenient to move the actuator.

[0038] The present invention is further configured such that the connecting rod 5 is T-shaped and screwed to the sliding rod 4. This screwed connection design facilitates the connection between the two.

[0039] The present invention is further configured such that: two guide blocks 34 are provided with sliding grooves 341 communicating with guide grooves 32, two guide parts 41 are provided with connecting holes, and guide blocks 34 are provided with connecting bolts 35, which pass through the sliding grooves 341 and are connected to the connecting holes.

[0040] The design of this structure ensures that after the sliding rod 4 moves into place, both ends of the sliding rod 4 are fixed and limited by the connecting bolts 35, thereby ensuring that the two sides of the sliding rod 4 are stable during the piston expansion and movement.

[0041] The present invention is further configured such that: an indicator groove 342 is provided on the outer side of each of the two sliding grooves 341, and the two indicator grooves 342 are connected to the guide groove 32;

[0042] Both guide sections 41 have an indicator rod 411 extending from their outer ends, and the indicator rod 411 is slidably connected to the indicator groove 342.

[0043] Indicator slots 342 are provided on both sides to ensure that the indication status can be clearly seen from all sides after the actuator is installed. This also ensures that the sliding rod 4 is subjected to balanced force on both sides and acts as a guide, guaranteeing stability during sliding.

[0044] The present invention is further configured such that an indicator element 412 is detachably mounted on the indicator rod 411. The design of the indicator element 412 can improve the pointing effect.

[0045] The present invention is further configured such that: the guide block 34 includes an upper mounting block and a lower mounting block, the lower mounting block is detachably mounted on the guide seat 33, and the upper mounting block is detachably mounted on the lower mounting block.

[0046] The structure is designed such that the lower mounting block is first installed on the guide seat 33, then the sliding rod 4 is installed on the lower mounting block, and then the upper mounting block limits it, thus completing the assembly of the limiting mechanism 2.

[0047] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A pneumatic actuator for rotational limiting, comprising an actuator body (1) and a limiting mechanism (2), wherein two sets of the limiting mechanism (2) are provided and respectively disposed at both ends of the actuator body (1), and both ends of the actuator body (1) are provided with operating ports (11), characterized in that: The limiting mechanism (2) includes a guide plate (3), a sliding rod (4) and a connecting rod (5). One end of the sliding rod (4) is inserted into the actuator body (1) through the operation port (11), and the other end is detachably connected to the connecting rod (5). A guide channel (31) is provided through the guide plate (3), and guide grooves (32) are provided on both sides of the guide channel (31). A guide part (41) is provided at the end of the sliding rod (4) away from the operating port (11), and the guide part (41) is slidably connected in the guide groove (32). An air hole (42) is provided through the middle of the sliding rod (4).

2. The pneumatic actuator for rotational limiting according to claim 1, characterized in that: The guide plate (3) includes a guide seat (33) and a guide block (34), and the upper end of the guide seat (33) is provided with a flat mounting surface; The guide blocks (34) are provided in two sets. Each of the two guide blocks (34) has a guide groove (32) on an adjacent side, and a guide channel (31) is formed between the two guide blocks (34).

3. A pneumatic actuator for rotational limiting according to claim 2, characterized in that: The guide seat (33) is arranged in the shape of a quarter sphere, and the first plane of the guide seat (33) is connected to the actuator body (1), while the second plane of the guide seat (33) faces upward.

4. A pneumatic actuator for rotational limiting according to claim 3, characterized in that: The lower end of the guide seat (33) is provided with a handrail groove (331).

5. A pneumatic actuator for rotational limiting according to any one of claims 1 to 4, characterized in that: The connecting rod (5) is T-shaped and screwed to the sliding rod (4).

6. A pneumatic actuator for rotational limiting according to claim 2, characterized in that: The two guide blocks (34) are provided with sliding grooves (341) that communicate with guide grooves (32), and the two guide parts (41) are provided with connecting holes. The guide blocks (34) are provided with connecting bolts (35), and the connecting bolts (35) pass through the sliding grooves (341) and are connected to the connecting holes.

7. A pneumatic actuator for rotational limiting according to claim 6, characterized in that: Both sliding grooves (341) are provided with indicator grooves (342) on their outer sides, and both indicator grooves (342) are connected to guide grooves (32); Both guide portions (41) have an indicator rod (411) extending from their outer ends, and the indicator rod (411) is slidably connected to the indicator groove (342).

8. A pneumatic actuator for rotational limiting according to claim 7, characterized in that: An indicator element (412) is detachably mounted on the indicator rod (411).

9. A pneumatic actuator for rotational limiting according to claim 7, characterized in that: The guide block (34) includes an upper mounting block and a lower mounting block. The lower mounting block is detachably mounted on the guide seat (33), and the upper mounting block is detachably mounted on the lower mounting block.

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