Limiting device of pneumatic actuator

Abstract

The utility model belongs to the field of limiting devices, and particularly relates to a limiting device of a pneumatic actuator, which comprises a device main body, the limiting device is arranged on the inner wall of the device main body, the limiting device comprises a rotating rod, the two ends of the rotating rod penetrate through the device main body, and the surface of the rotating rod is rotatably connected with the inner wall of the device main body. A clamping opening is formed in one end of the rotating rod, a stop block is arranged at the other end of the rotating rod, and a gear is fixedly connected to the surface of the rotating rod. According to the limiting device of the pneumatic actuator, by arranging the limiting device and rotating a first worm and a second worm, the first worm and the second worm push a rotating sleeve and a top cover to rotate, and therefore limiting of the rotating sleeve and the top cover baffle to a rotating rod baffle is changed; and the rotating angle of the rotating rod can be effectively limited when the device main body is started and closed, so that the control of the device is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a limiting device technical field, specifically is a kind of limiting device of pneumatic actuator. BACKGROUND

[0002] Pneumatic actuator is a kind of compressed air as power source, air pressure energy is converted into mechanical energy, to drive various mechanical devices to carry out linear or rotational motion equipment, it is the terminal control element in automation control system, can accurately control the position, speed etc. Parameters of controlled object according to the requirement of control signal.

[0003] At present, in the prior art, most of the pneumatic actuators lack effective rotation angle limiting means, and the rotation angle of the rotating rod cannot be accurately controlled during the starting and closing stages, which may cause the actuating mechanism such as valve to not accurately reach the predetermined position, resulting in inaccurate flow control, large pressure fluctuation and other problems, thereby affecting the stability of the entire production process and the consistency of product quality. In view of this, we propose a kind of limiting device of pneumatic actuator. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of limiting device of pneumatic actuator, can solve the problem proposed in the above technical background.

[0005] To achieve the above object, the utility model provides a kind of limiting device of pneumatic actuator, including device main body, the inner wall of device main body is provided with limiting device, the limiting device includes:

[0006] Rotating rod, the both ends of rotating rod penetrate device main body, and the surface of rotating rod is rotatably connected with the inner wall of device main body, one end of rotating rod is provided with clamping port, the other end of rotating rod is provided with stop block, and the surface of rotating rod is fixedly connected with gear.

[0007] Preferably, the surface upper end of rotating rod is rotatably connected with the inner wall of rotating sleeve, the bottom surface of rotating sleeve is arranged on the upper surface of device main body, and the inner wall of rotating sleeve is provided with stop block.

[0008] Preferably, the upper surface of rotating sleeve is rotatably connected with top cover, the bottom surface of top cover is provided with stop block, the upper surface of top cover is provided with angle scale, and the inner wall of top cover is fixedly connected with glass cover.

[0009] Preferably, the worm gear surface of rotating sleeve is engaged with the surface of first worm, the both ends of first worm are rotatably connected with the upper surface of device main body, the worm gear surface of top cover is engaged with the surface of second worm, the both ends of second worm are rotatably connected with the upper surface of device main body, and the end surface of first worm and second worm is provided with key hole.

[0010] Preferably, the device body comprises a shell, the surface of the shell is provided with a front air hole, the two sides of the shell are provided with push air holes, the inner wall of the shell is slidably connected with a push plate, and the surface of the push plate is fixedly connected with a rack.

[0011] Preferably, the surface of the rack is engaged with a gear, the inner wall of the shell is rotatably connected with both ends of a rotating rod, the upper surface of the shell is rotatably connected with a rotating sleeve, the upper surface of the shell is rotatably connected with a first worm, and the upper surface of the shell is rotatably connected with a second worm.

[0012] Beneficial effects

[0013] The utility model provides a limiting device of pneumatic actuator. Has the following beneficial effects:

[0014] (1), the limiting device of pneumatic actuator, through the limiting device set up, through the rotation first worm and second worm, make first worm and second worm push rotating sleeve and top cap and rotate, to change rotating sleeve and top cap baffle for the limiting of rotating rod baffle, make device body can effectively limit the rotation angle of rotating rod rotation when starting and closing, to make the control of device more accurate.

[0015] (2), the limiting device of pneumatic actuator, through the glass cover set up, when needing to control the baffle opening angle of rotating sleeve and top cap in detail, the baffle of its top cap is scale zero, when adjusting rotating sleeve baffle, can intuitively see rotating sleeve baffle through glass cover, to calculate the included angle of the baffle of its top cap and rotating sleeve baffle according to the position of rotating sleeve baffle corresponding its top cap angle scale, to better limit rotating rod. ACCURACY

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without paying creative labor.

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the whole structure schematic diagram of the utility model;

[0019] Figure 3 It is the structure schematic diagram of the utility model A;

[0020] Figure 4The utility model discloses a rotating rod split structure schematic diagram.

[0021] The number of the drawing is explained: 1, device main body, 2, limiting device, 101, shell, 102, front air hole, 103, push air hole, 104, push board, 105, rack, 201, rotating rod, 202, clamping interface, 203, gear, 204, rotating cover, 205, top cap, 206, first worm, 207, keyhole, 208, second worm, 209, glass cover.

[0022] The utility model discloses the realization, functional characteristics and advantages will combine embodiment, refer to the further illustration of drawing. Specific embodiments

[0023] The technical scheme in the utility model embodiment will be described clearly and completely in the utility model embodiment in the utility model embodiment in the following, obviously, the described embodiment only is a part of embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments that the person of ordinary skill in the art obtains without making the creative labor belong to the range of the utility model protection.

[0024] Please refer to Figures 1-4 The utility model discloses a kind of limiting devices of pneumatic actuator, including device main body 1, device main body 1 includes shell 101, the surface of shell 101 is set with front air hole 102, the two sides of shell 101 are set with push air hole 103, the inner wall of shell 101 is slidably connected push board 104, the surface of push board 104 is fixedly connected with rack 105, the surface of rack 105 is engaged with gear 203, the inner wall of shell 101 is rotatably connected with rotating rod 201 both ends, the upper surface of shell 101 is rotatably connected with rotating cover 204, the upper surface of shell 101 is rotatably connected with first worm 206, the upper surface of shell 101 is rotatably connected with second worm 208.

[0025] The inner wall of the device body 1 is provided with a limiting device 2, the limiting device 2 comprises: a rotating rod 201, both ends of the rotating rod 201 penetrate through the device body 1, and the surface of the rotating rod 201 is rotationally connected with the inner wall of the device body 1, one end of the rotating rod 201 is provided with a clamping port 202, the other end of the rotating rod 201 is provided with a stop block, the surface of the rotating rod 201 is fixedly connected with a gear 203, the surface of the rotating rod 201 is rotationally connected with the inner wall of a rotating sleeve 204, the bottom surface of the rotating sleeve 204 is arranged on the upper surface of the device body 1, the inner wall of the rotating sleeve 204 is provided with a stop block, the upper surface of the rotating sleeve 204 is rotationally connected with a top cover 205, the bottom surface of the top cover 205 is provided with a stop block, the upper surface of the top cover 205 is provided with an angle scale, the inner wall of the top cover 205 is fixedly connected with a glass cover 209, when it is necessary to finely control the opening angle of the stop plate of the rotating sleeve 204 and the top cover 205, the scale zero is arranged at the stop plate of the top cover 205, when the stop plate of the rotating sleeve 204 is adjusted, the stop plate of the rotating sleeve 204 can be directly observed through the glass cover 209, so that the included angle between the stop plate of the top cover 205 and the stop plate of the rotating sleeve 204 can be calculated according to the position of the angle scale of the top cover 205 corresponding to the stop plate of the rotating sleeve 204, so that the rotating rod 201 can be better limited, the worm surface of the rotating sleeve 204 is meshed with the surface of a first worm 206, both ends of the first worm 206 are rotationally connected with the upper surface of the device body 1, the worm surface of the top cover 205 is meshed with the surface of a second worm 208, both ends of the second worm 208 are rotationally connected with the upper surface of the device body 1, the end surfaces of the first worm 206 and the second worm 208 are both provided with a key hole 207, through the limiting device 2, the first worm 206 and the second worm 208 are rotated, so that the first worm 206 and the second worm 208 push the rotating sleeve 204 and the top cover 205 to rotate, so as to change the limitation of the stop plate of the rotating sleeve 204 and the top cover 205 on the stop plate of the rotating rod 201, so that the rotating angle of the rotating rod 201 can be effectively limited when the device body 1 is started and stopped, so that the control of the device is more accurate.

[0026] In the utility model, when starting the device main body 1, it is filled with air through the air hole 103 from both sides, so that the push plate 104 moves, the air in the shell 101 is discharged through the front air hole 102, so that the rack 105 is rotated by the rotating rod 201 driven by the gear 203, and the clamping interface 202 of the rotating rod 201 is clamped on the input end of the valve, so that the valve is controlled, when the device needs to be reset, the inside of the shell 101 is filled with air through the front air hole 102, so that the push plate 104 is opened, so that the rotating rod 201 is rotated and reset, when the rotating angle of the rotating rod 201 needs to be limited, the first worm 206 and the second worm 208 are rotated, so that the first worm 206 and the second worm 208 respectively push the rotating sleeve 204 and the top cover 205 to rotate, so that the limiting of the baffle of the rotating sleeve 204 and the top cover 205 to the baffle of the rotating rod 201 is changed, when the opening angle of the baffle of the rotating sleeve 204 and the top cover 205 needs to be controlled finely, the baffle of the top cover 205 is a scale zero, when the baffle of the rotating sleeve 204 is adjusted, the baffle of the rotating sleeve 204 can be directly seen through the glass cover 209, so that the angle between the baffle of the top cover 205 and the baffle of the rotating sleeve 204 is calculated according to the position of the baffle of the rotating sleeve 204 corresponding to the angle scale of the top cover 205, so that the limiting angle adjustment is more fine through the first worm 206 and the second worm 208.

[0027] The above only is the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and the equivalent structure transformation of the utility model specification and the attached drawing contents under the inventive concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A limiting device for a pneumatic actuator, comprising a device body (1), characterized in that: The inner wall of the main body (1) of the device is provided with a limiting device (2), the limiting device (2) comprising: A rotating rod (201) has two ends that pass through the main body (1) of the device, and the surface of the rotating rod (201) is rotatably connected to the inner wall of the main body (1). One end of the rotating rod (201) is provided with a card interface (202), and the other end of the rotating rod (201) is provided with a stop block. A gear (203) is fixedly connected to the surface of the rotating rod (201).

2. The limiting device for a pneumatic actuator according to claim 1, characterized in that: The upper surface of the rotating rod (201) is rotatably connected to the inner wall of the rotating sleeve (204), the bottom surface of the rotating sleeve (204) is located on the upper surface of the main body (1) of the device, and a stop block is provided on the inner wall of the rotating sleeve (204).

3. The limiting device for a pneumatic actuator according to claim 2, characterized in that: The upper surface of the rotating sleeve (204) is rotatably connected to a top cover (205), the bottom surface of the top cover (205) is provided with a stop block, the upper surface of the top cover (205) is provided with an angle scale, and the inner wall of the top cover (205) is fixedly connected to a glass cover (209).

4. The limiting device for a pneumatic actuator according to claim 3, characterized in that: The worm wheel surface of the rotating sleeve (204) meshes with the surface of the first worm (206), and the two ends of the first worm (206) are rotatably connected to the upper surface of the device body (1). The worm wheel surface of the top cover (205) meshes with the surface of the second worm (208), and the two ends of the second worm (208) are rotatably connected to the upper surface of the device body (1). The end faces of the first worm (206) and the second worm (208) are both provided with keyholes (207).

5. A limiting device for a pneumatic actuator according to claim 4, characterized in that: The main body (1) of the device includes a shell (101), the surface of the shell (101) is provided with a front air hole (102), the two sides of the shell (101) are provided with push air holes (103), the inner wall of the shell (101) is slidably connected to a push plate (104), and the surface of the push plate (104) is fixedly connected with a rack (105).

6. A limiting device for a pneumatic actuator according to claim 5, characterized in that: The surface of the rack (105) meshes with the gear (203), the inner wall of the outer shell (101) is rotatably connected to both ends of the rotating rod (201), the upper surface of the outer shell (101) is rotatably connected to the rotating sleeve (204), the upper surface of the outer shell (101) is rotatably connected to the first worm (206), and the upper surface of the outer shell (101) is rotatably connected to the second worm (208).

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