Actuator with overload protection function

Abstract

The actuator with the overload protection function comprises an actuator body, a left driving cavity structure, a rotating structure, a butt joint valve structure and an overload valve structure, the left driving cavity structure is fixedly installed on the surface of one side of the actuator body, and the right driving cavity structure is fixedly installed on the surface of the other side of the actuator body. The surface of the actuator body is rotationally sleeved with a rotating structure, the surface of one end of the rotating structure is fixedly connected with a butt joint valve structure in a butt joint mode, and an overload valve structure is fixedly arranged on the surface of the left driving cavity structure. The situation that the rotating gear is damaged by the driving tooth groove block due to too high air pressure is avoided, and when the air pressure is too high, air extrudes and springs the sealing ball, so that the sealing ball opens the vent hole, and overload air is exhausted into the center cavity and then exhausted.

Description

Technical Field

[0001] The utility model relates to the field of actuators, in particular to an actuator with an overload protection function. Background Art

[0002] With the continuous development of industry, all walks of life have entered the industry of intelligent manufacturing. Various types of automatic control and drive devices have been widely used in all walks of life to replace the original traditional manual operation. As an automatic drive device, pneumatic actuators are driven by air sources, have explosion-proof functions compared to electric actuators, and have large driving torque, long service life, and relatively low cost. They are now widely used. However, the existing pneumatic actuators cannot control the pressure in each driving chamber. When the pressure in the driving chamber is too high and cannot be released, it will damage the piston, sealing ring, cylinder body and other components of the pneumatic actuator, thereby affecting the service life of the pneumatic actuator. Therefore, an actuator with overload protection function is proposed. Utility Model Content

[0003] The main purpose of the utility model is to provide an actuator with an overload protection function, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An actuator with an overload protection function comprises an actuator body, a left drive chamber structure, a rotating structure, a docking valve structure and an overload valve structure, wherein the left drive chamber structure is fixedly installed on the surface of one side of the actuator body, and the right drive chamber structure is fixedly installed on the surface of the other side of the actuator body. The surface of the actuator body is rotated and sleeved with a rotating structure, and one end surface of the rotating structure is fixedly docked with a docking valve structure. The surface of the left drive chamber structure is fixedly provided with an overload valve structure, and the overload valve structure comprises a fixed valve, a sealing ring, a vent, a vent fixing ring and an elastic sealing ball. The surface of the fixed valve is fixedly sleeved with a sealing ring, and the surface of the fixed valve is fixedly opened with a vent, and the surface of the vent is fixedly connected with a vent fixing ring, and the surface of the vent fixing ring is fixedly connected with an elastic sealing ball.

[0006] Preferably, the actuator body includes an outer shell, an air inlet hole, a limiting nut, an exhaust hole and a docking plate. The outer shell has an air inlet hole fixedly opened on its surface, a limiting nut is spirally connected to the outer shell surface, an exhaust hole is fixedly opened on the outer shell surface, and a docking plate is fixedly arranged on the bottom end surface of the outer shell.

[0007] Preferably, the left driving chamber structure includes a closing cover, a fixing nut, a pneumatic rod, a return spring and a driving tooth groove block. The surface of the closing cover is fixedly installed with a fixing nut, the surface of the closing cover is fixedly connected with a pneumatic rod, the surface of the pneumatic rod is fixedly sleeved with a return spring, and one end surface of the pneumatic rod is fixedly connected with a driving tooth groove block.

[0008] The rotating structure includes a rotating column, a switch display cover, a limiting ring, a rotating gear and a docking column. A switch display cover is fixedly provided on one end surface of the rotating column, a limiting ring is provided on the surface fixing sleeve of the rotating column, a rotating gear is provided on the surface fixing sleeve of the rotating column, and a docking column is fixedly provided on the other end surface of the rotating column.

[0009] Preferably, the docking valve structure includes a docking frame, a valve tube, an embedded column and a valve ball. The docking frame has a valve tube fixedly connected to its surface, an embedded column is rotatably sleeved on the surface of the docking frame, and a valve ball is fixedly connected to one end surface of the embedded column.

[0010] Preferably, a left driving chamber structure and a right driving chamber structure are fixedly installed on the two end surfaces of the shell, the rotating column of the rotating structure is rotatably sleeved on the surface of the shell and penetrates into the interior, the surface of the rotating gear is fixedly fitted on the tooth groove surface of the driving tooth groove block, the docking plate is fixedly connected to the docking plate, the embedded column is docked and fixed to the docking column, and when the rotating column rotates, it drives the embedded column and the valve ball to rotate to close and open its pipeline.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model discloses an actuator with an overload protection function. The overload valve structure is arranged and installed at the center position of the driving tooth groove block of the left driving chamber structure and the right driving chamber structure. When the air pressure moves the driving tooth groove block toward the center, it is ensured that the driving tooth groove block will not damage the rotating gear due to excessive air pressure. When the air pressure is too high, the gas squeezes and bounces the sealing ball to open the vent hole so as to discharge the overload gas into the central cavity and then discharge it. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall schematic diagram of an actuator with an overload protection function according to the utility model;

[0014] Figure 2 This is an internal schematic diagram of an actuator with an overload protection function according to the utility model;

[0015] Figure 3 This is a schematic diagram of an actuator body with an overload protection function according to the utility model;

[0016] Figure 4This is a schematic diagram of the structure of the left driving chamber of an actuator with an overload protection function according to the utility model;

[0017] Figure 5 This is a schematic diagram of the rotation structure of an actuator with an overload protection function according to the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of a docking valve of an actuator with an overload protection function according to the utility model;

[0019] Figure 7 This is a schematic diagram of the structure of an overload valve of an actuator with an overload protection function according to the utility model;

[0020] In the figure: 1. actuator body; 101. shell; 102. air inlet; 103. limiting nut; 104. exhaust hole; 105. docking plate; 2. left drive chamber structure; 201. closing cover; 202. fixing nut; 203. pneumatic rod; 204. return spring; 205. driving tooth groove block; 3. rotating structure; 301. rotating column; 302. switch display cover; 303. limiting ring; 304. rotating gear; 305. docking column; 4. docking valve structure; 401. docking frame; 402. valve pipe; 403. embedded column; 404. valve ball; 5. overload valve structure; 501. fixed valve; 502. sealing ring; 503. vent; 504. ventilation fixing ring; 505. elastic sealing ball; 6. right drive chamber structure. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-7 As shown, an actuator with an overload protection function comprises an actuator body 1, a left driving chamber structure 2, a rotating structure 3, a docking valve structure 4 and an overload valve structure 5. The left driving chamber structure 2 is fixedly installed on the surface of one side of the actuator body 1, and the right driving chamber structure 6 is fixedly installed on the surface of the other side of the actuator body 1. The rotating structure 3 is rotatably sleeved on the surface of the actuator body 1, and the docking valve structure 4 is fixedly docked on one end surface of the rotating structure 3. The overload valve structure 5 is fixedly arranged on the surface of the left driving chamber structure 2. The overload valve structure 5 comprises a fixed valve 501, a sealing ring 502, a vent 503, a vent fixed ring 504 and an elastic sealing ball 505. The surface of the fixed valve 501 is fixedly sleeved with a sealing ring 502, the surface of the fixed valve 501 is fixedly opened with a vent 503, the surface of the vent 503 is fixedly connected with a vent fixed ring 504, and the surface of the vent fixed ring 504 is fixedly connected with an elastic sealing ball 505.

[0023] The actuator body 1 includes a housing 101, an air inlet 102, a limiting nut 103, an exhaust 104 and a docking plate 105. The surface of the housing 101 is fixedly provided with the air inlet 102, the surface of the housing 101 is spirally connected with the limiting nut 103, the surface of the housing 101 is fixedly provided with the exhaust 104, and the bottom surface of the housing 101 is fixedly provided with the docking plate 105; the left driving chamber structure 2 includes a closing cover 201, a fixing nut 202, a pneumatic rod 203, a return spring 204 and a driving gear The surface of the closure cover 201 is fixedly mounted with a fixing nut 202, the surface of the closure cover 201 is fixedly connected with a gas pressure rod 203, the surface of the gas pressure rod 203 is fixedly sleeved with a return spring 204, and one end surface of the gas pressure rod 203 is fixedly connected with a driving tooth groove block 205; the rotating structure 3 includes a rotating column 301, a switch display cover 302, a limiting ring 303, a rotating gear 304 and a docking column 305, one end surface of the rotating column 301 is fixedly provided with a switch display cover 302, the rotating column The surface of 301 is fixedly sleeved with a limiting ring 303, the surface of the rotating column 301 is fixedly sleeved with a rotating gear 304, and the other end surface of the rotating column 301 is fixedly provided with a docking column 305; the docking valve structure 4 includes a docking frame 401, a valve tube 402, an embedded column 403 and a valve ball 404, the docking frame 401, the surface of the docking frame 401 is fixedly connected with the valve tube 402, the surface of the docking frame 401 is rotatably sleeved with an embedded column 403, and one end surface of the embedded column 403 is fixedly connected with the valve ball 404; the left drive cavity structure 2 and the right drive cavity structure 6 are fixedly installed on the two end surfaces of the outer shell 101, the rotating column 301 of the rotating structure 3 is rotatably sleeved on the surface of the outer shell 101 and penetrates into the interior, the surface of the rotating gear 304 is fixedly fitted on the tooth groove surface of the driving tooth groove block 205, the docking plate 105 is fixedly connected to the docking plate 105, the embedded column 403 is docked and fixed with the docking column 305, and when the rotating column 301 rotates, it drives the embedded column 403 and the valve ball 404 to rotate to close and open its pipeline.

[0024] It should be noted that the utility model is an actuator with an overload protection function, which can be overloaded and vented through the overload valve structure 5. The overload valve structure 5 is installed at the center position of the driving tooth groove block 205 of the left driving chamber structure 2 and the right driving chamber structure 6. When the air pressure enters the interior through the air inlet 102 and the exhaust hole 104 to move the driving tooth groove block 205 toward the center, it is ensured that the driving tooth groove block 205 will not damage the rotating gear 304 due to excessive air pressure. When the air pressure is too high, the gas squeezes the elastic sealing ball 505 to open the vent 503 to discharge the overload gas into the central cavity, and then discharges and vents it to prevent the air pressure from being too high.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An actuator with overload protection function, characterized in that: The invention comprises an actuator body (1), a left driving chamber structure (2), a rotating structure (3), a docking valve structure (4) and an overload valve structure (5), wherein the left driving chamber structure (2) is fixedly mounted on one side surface of the actuator body (1), and the right driving chamber structure (6) is fixedly mounted on the other side surface of the actuator body (1); the rotating structure (3) is rotatably mounted on the surface of the actuator body (1), and the docking valve structure (4) is fixedly docked on one end surface of the rotating structure (3); and the overload valve structure (5) is fixedly mounted on the surface of the left driving chamber structure (2). A valve structure (5), the overload valve structure (5) comprising a fixed valve (501), a sealing ring (502), a vent hole (503), a vent fixed ring (504) and an elastic sealing ball (505), the surface of the fixed valve (501) being fixedly sleeved with a sealing ring (502), the surface of the fixed valve (501) being fixedly provided with a vent hole (503), the surface of the vent hole (503) being fixedly connected to the vent fixed ring (504), and the surface of the vent fixed ring (504) being fixedly connected to the elastic sealing ball (505).

2. The actuator with overload protection function according to claim 1, characterized in that: The actuator body (1) comprises a housing (101), an air inlet hole (102), a limiting nut (103), an exhaust hole (104) and a docking plate (105); the surface of the housing (101) is fixedly provided with the air inlet hole (102); the surface of the housing (101) is spirally connected with the limiting nut (103); the surface of the housing (101) is fixedly provided with the exhaust hole (104); and the bottom end surface of the housing (101) is fixedly provided with the docking plate (105).

3. The actuator with overload protection function according to claim 2, characterized in that: The left driving chamber structure (2) comprises a closing cover (201), a fixing nut (202), a pneumatic rod (203), a return spring (204) and a driving tooth groove block (205); the surface of the closing cover (201) is fixedly mounted with a fixing nut (202); the surface of the closing cover (201) is fixedly connected with a pneumatic rod (203); the surface of the pneumatic rod (203) is fixedly sleeved with a return spring (204); and the surface of one end of the pneumatic rod (203) is fixedly connected with a driving tooth groove block (205).

4. The actuator with overload protection function according to claim 3, characterized in that: The rotating structure (3) comprises a rotating column (301), a switch display cover (302), a limiting ring (303), a rotating gear (304) and a docking column (305); the switch display cover (302) is fixedly arranged on one end surface of the rotating column (301); the limiting ring (303) is fixedly arranged on the surface of the rotating column (301); the rotating gear (304) is fixedly arranged on the surface of the rotating column (301); and the docking column (305) is fixedly arranged on the other end surface of the rotating column (301).

5. The actuator with overload protection function according to claim 4, characterized in that: The docking valve structure (4) comprises a docking frame (401), a valve tube (402), an embedded column (403) and a valve ball (404); the docking frame (401) has a valve tube (402) fixedly connected to its surface; the embedded column (403) is rotatably sleeved on the surface of the docking frame (401); and the valve ball (404) is fixedly connected to one end surface of the embedded column (403).

6. The actuator with overload protection function according to claim 5, characterized in that: The left drive chamber structure (2) and the right drive chamber structure (6) are fixedly mounted on the surfaces of both ends of the housing (101); the rotating column (301) of the rotating structure (3) is rotatably sleeved on the surface of the housing (101) and penetrates into the interior; the surface of the rotating gear (304) is fixedly fitted on the tooth groove surface of the driving tooth groove block (205); the docking plate (105) is fixedly connected to the docking plate (105); the embedded column (403) is fixedly docked with the docking column (305); when the rotating column (301) rotates, it drives the embedded column (403) and the valve ball (404) to rotate to close and open the pipeline.

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