Inflatable shaft with safety valve

Abstract

According to the technical scheme, the inflatable shaft comprises an inflatable shaft body and a clamping strip, a fixing shaft is installed in the middle of the interior of the inflatable shaft body, an air bag is installed on the outer surface of the fixing shaft, a pressure sensor is installed in the air bag, a rotating shaft is installed in the middle of one end of the inflatable shaft body, and a pressure sensor is installed in the rotating shaft. Mounting holes are formed in the two sides, close to the rotating shaft, of the inflatable shaft body, a safety valve is mounted at the position, located in the mounting holes, of one side of the air bag, a supporting frame is mounted on the side, close to the rotating shaft, of the inflatable shaft body, a micro motor is mounted on one side of the supporting frame, and a lead screw is mounted on an output shaft of the micro motor. According to the inflatable shaft with the safety valve, the problems that in the using process of an existing inflatable shaft, the inflation pressure is prone to being too large, the internal pressure of an air bag is prone to being too large, the air bag is damaged, and normal use of the inflatable shaft is affected are solved, the damage probability of the air bag in the inflatable shaft is reduced, and therefore normal use of the inflatable shaft is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of air shaft application technology, specifically an air shaft with a safety valve. Background Technology

[0002] Air shafts are widely used transmission devices in industrial fields, characterized by their unique design and diverse functions. These devices adjust their diameter by controlling internal air pressure, thereby achieving torque transmission and motion control. Air shafts are simple yet effective in design and commonly found in various mechanical equipment, such as printing machinery, packaging equipment, and textile machinery. Their advantages include smooth transmission, simple maintenance, strong adaptability, and energy saving. By using air shafts, industrial production processes can achieve more efficient and flexible operations, improving production efficiency and equipment stability. In many industrial applications, air shafts have become indispensable key components, providing reliable solutions for various transmission needs.

[0003] Existing air shafts are prone to excessive inflation pressure during use, which can lead to excessive internal pressure in the air bladder, causing damage to the air bladder and affecting the normal use of the air shaft. To address this, we propose an air shaft with a safety valve. Utility Model Content

[0004] The purpose of this invention is to provide an air shaft with a safety valve, which can quickly vent air from the air shaft, thereby solving the problem that the inflation pressure of existing air shafts is easily too high during use, which can easily lead to excessive pressure inside the air bladder, resulting in damage to the air bladder and affecting the normal use of the air shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic shaft with a safety valve, comprising a pneumatic shaft body and a clamping bar, wherein a fixed shaft is installed in the middle of the interior of the pneumatic shaft body, an air bladder is installed on the outer surface of the fixed shaft, a pressure sensor is installed inside the air bladder, a rotating shaft is installed in the middle of one end of the pneumatic shaft body, mounting holes are provided on both sides of the pneumatic shaft body near the rotating shaft, a safety valve is installed in the mounting hole on one side of the air bladder, a support frame is installed on the side of the pneumatic shaft body near the rotating shaft, a micro motor is installed on one side of the support frame, a lead screw is installed on the output shaft of the micro motor, a movable frame is installed on the outer surface of the lead screw, and a pressing shaft is installed in the mounting hole on one side of the movable frame.

[0006] Preferably, a clamping bar is installed on the inner surface of the air shaft, and a clamping groove is provided in the middle of the clamping bar. A positioning frame is installed in the clamping groove by a positioning bolt, and a positioning bearing is installed in the middle of the positioning frame by a pin.

[0007] Preferably, an inflation head is installed at the bottom of the airbag, and the inflation head is disposed on the outer surface of the air shaft.

[0008] Preferably, a slide rod is installed on the side of the air shaft near the movable frame, and the slide rod is sleeved inside the movable frame.

[0009] Preferably, a limiting rod is installed on the inner surface of the air shaft, a movable plate is installed on the outer surface of the limiting rod located on the inner surface of the clamping bar, a spring A is installed on the outer surface of the limiting rod located on the top of the movable plate, and a limiting groove is provided inside the movable plate at the position of the limiting rod.

[0010] Preferably, the movable plate has buffer grooves on both sides of its top, buffer columns are installed inside the buffer grooves, and springs B are installed inside the buffer grooves at the bottom of the buffer columns.

[0011] Preferably, there are eight clamping bars in total, and the eight clamping bars are evenly distributed on the outer surface of the air shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model achieves rapid air release from an air shaft by incorporating an air bladder, pressure sensor, safety valve, pressing shaft, micro motor, moving frame, and lead screw. A pressure sensor is installed inside the air bladder, a rotating shaft is located at the center of one end of the air shaft, and mounting holes are provided on both sides of the air shaft near the rotating shaft. A safety valve is installed inside the mounting hole on one side of the air bladder, a support frame is installed on the side of the air shaft near the rotating shaft, a micro motor is installed on one side of the support frame, a lead screw is installed on the output shaft of the micro motor, a moving frame is installed on the outer surface of the lead screw, and a pressing shaft is installed inside the mounting hole on one side of the moving frame. This solves the problem that existing air shafts easily experience excessive inflation pressure during use, leading to excessive pressure inside the air bladder and damage to the air shaft, thus affecting its normal operation. This invention reduces the probability of damage to the air bladder inside the air shaft, thereby ensuring the normal use of the air shaft.

[0014] 2. This utility model improves the concentricity of the clamping strips by setting a limiting rod, a moving plate, and clamping strips. A limiting rod is set on the inner surface of the air shaft, and a moving plate is set on the outer surface of the limiting rod at the inner surface of the clamping strip. A spring A is set on the outer surface of the limiting rod at the top of the moving plate. A limiting groove is set inside the moving plate at the position of the limiting rod. This solves the problem that the existing clamping strips have a large number of clamping strips, and the clamping strips move at different speeds during airbag inflation, which affects the concentricity of the clamping strips. This improves the concentricity of the clamping strips, thereby ensuring the clamping effect of the air shaft.

[0015] 3. This utility model absorbs the impact force of the moving plate by setting buffer columns, buffer grooves and spring B. Buffer grooves are provided on both sides of the top of the moving plate, buffer columns are set inside the buffer grooves, and spring B is set at the bottom of the buffer columns inside the buffer grooves. This solves the problem that the existing air shaft has a large impact force when the moving plate moves, which easily leads to deformation of the air shaft and affects its service life. It reduces the probability of deformation of the air shaft and thus ensures the service life of the air shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 for Figure 1 A magnified structural diagram of A;

[0018] Figure 3 This is a side view of the structure of this utility model;

[0019] Figure 4 for Figure 3 A magnified structural diagram of B in the diagram;

[0020] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 6 for Figure 5 The enlarged structural diagram of C is shown below.

[0022] Reference numerals: 1. Air shaft; 2. Clamping bar; 3. Rotating shaft; 4. Lead screw; 5. Support frame; 6. Micro motor; 7. Slide rod; 8. Moving frame; 9. Pressing shaft; 10. Mounting hole; 11. Moving plate; 12. Airbag; 13. Fixed shaft; 14. Spring A; 15. Limiting groove; 16. Limiting rod; 17. Spring B; 18. Buffer groove; 19. Buffer column; 20. Safety valve; 21. Inflation head; 22. Pressure sensor; 23. Clamping groove; 24. Positioning bearing; 25. Positioning bolt; 26. Positioning frame. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, to achieve the above objectives, this utility model provides the following technical solution: a pneumatic shaft with a safety valve, comprising a pneumatic shaft body 1 and a clamping bar 2. A fixed shaft 13 is installed in the middle of the pneumatic shaft body 1, and an air bladder 12 is installed on the outer surface of the fixed shaft 13. An inflation head 21 is installed at the bottom of the air bladder 12 and is located on the outer surface of the pneumatic shaft body 1. A pressure sensor 22 is installed inside the air bladder 12. A rotating shaft 3 is installed in the middle of one end of the pneumatic shaft body 1. Mounting holes 10 are provided on both sides of the pneumatic shaft body 1 near the rotating shaft 3. A safety valve 20 is installed inside the mounting hole 10 on one side of the bladder 12. A support frame 5 is installed on the side of the air shaft 1 near the rotating shaft 3. A micro motor 6 is installed on one side of the support frame 5. A lead screw 4 is installed on the output shaft of the micro motor 6. A movable frame 8 is installed on the outer surface of the lead screw 4. A pressing shaft 9 is installed inside the mounting hole 10 on one side of the movable frame 8. A slide rod 7 is installed on the side of the air shaft 1 near the movable frame 8. The slide rod 7 is sleeved inside the movable frame 8. The movable frame 8 is limited by the slide rod 7 to facilitate the movement of the movable frame 8.

[0026] The working principle of an air expansion shaft with a safety valve based on Embodiment 1 is as follows: After the present invention is installed, when in use, the air bladder 12 is inflated through the inflation head 21, and the internal pressure of the air bladder 12 is monitored through the pressure sensor 22. When the pressure is too high, the micro motor 6 is started, which drives the lead screw 4 to rotate. The lead screw 4 drives the moving frame 8 to move, and the moving frame 8 drives the pressing shaft 9 to move laterally. The pressing shaft 9 squeezes the safety valve 20, thereby expelling the gas inside the air bladder 12. Thus, the working process of the device is completed.

[0027] Example 2

[0028] like Figure 3 and Figure 4 As shown, the present invention proposes an air shaft with a safety valve. Compared with Embodiment 1, this embodiment further includes: a limit rod 16 installed on the inner surface of the air shaft body 1; a movable plate 11 installed on the outer surface of the limit rod 16 at the inner surface of the clamping bar 2; a spring A14 installed on the outer surface of the limit rod 16 at the top of the movable plate 11; a limit groove 15 provided inside the movable plate 11 at the position of the limit rod 16; buffer grooves 18 provided on both sides of the top of the movable plate 11; buffer posts 19 installed inside the buffer grooves 18; and buffer posts 19 installed inside the buffer grooves 18. A spring B17 is installed at the bottom of the 19th section. The spring B17 buffers and absorbs the impact force of the moving plate 11. A clamping strip 2 is installed on the inner surface of the air shaft 1. There are eight clamping strips 2 in total, and the eight clamping strips 2 are evenly distributed on the outer surface of the air shaft 1. A clamping groove 23 is provided in the middle of the clamping strip 2. A positioning frame 26 is installed in the clamping groove 23 by positioning bolts 25. A positioning bearing 24 is installed in the middle of the positioning frame 26 by a pin. If the positioning bearing 24 is damaged, it can be replaced and maintained.

[0029] In this embodiment, when the airbag 12 is inflated, the inflated airbag 12 compresses the moving plate 11, thereby moving the moving plate 11. The moving plate 11 compresses the clamping strip 2, thereby moving the clamping strip 2. The product tube is wound up by the clamping strip 2 and the positioning bearing 24. When the moving plate 11 moves, the spring force of the spring B17 and the buffer column 19 buffer and absorb the impact force, thereby protecting the clamping strip 2.

[0030] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A pneumatic shaft with a safety valve, comprising a pneumatic shaft body (1) and a clamping bar (2), characterized in that: A fixed shaft (13) is installed in the middle of the air shaft (1). An air bladder (12) is installed on the outer surface of the fixed shaft (13). A pressure sensor (22) is installed inside the air bladder (12). A rotating shaft (3) is installed in the middle of one end of the air shaft (1). Mounting holes (10) are provided on both sides of the air shaft (1) near the rotating shaft (3). A safety valve (20) is installed inside the mounting hole (10) on one side of the air bladder (12). A support frame (5) is installed on the side of the air shaft (1) near the rotating shaft (3). A micro motor (6) is installed on one side of the support frame (5). A lead screw (4) is installed on the output shaft of the micro motor (6). A movable frame (8) is installed on the outer surface of the lead screw (4). A pressing shaft (9) is installed inside the mounting hole (10) on one side of the movable frame (8).

2. The air shaft with a safety valve according to claim 1, characterized in that: The inner surface of the air shaft (1) is fitted with a clamping bar (2), and the clamping bar (2) has a clamping groove (23) in the middle. The clamping groove (23) is fitted with a positioning frame (26) by a positioning bolt (25), and the positioning frame (26) is fitted with a positioning bearing (24) by a pin in the middle.

3. The air shaft with a safety valve according to claim 1, characterized in that: An inflation head (21) is installed at the bottom of the airbag (12), and the inflation head (21) is located on the outer surface of the air shaft (1).

4. The air shaft with a safety valve according to claim 1, characterized in that: The air shaft (1) is fitted with a slide rod (7) on the side near the movable frame (8), and the slide rod (7) is sleeved inside the movable frame (8).

5. A pneumatic shaft with a safety valve according to claim 1, characterized in that: A limiting rod (16) is installed on the inner surface of the air shaft (1). A movable plate (11) is installed on the outer surface of the limiting rod (16) on the inner surface of the clamping bar (2). A spring A (14) is installed on the outer surface of the limiting rod (16) at the top of the movable plate (11). A limiting groove (15) is provided inside the movable plate (11) at the position of the limiting rod (16).

6. A pneumatic shaft with a safety valve according to claim 5, characterized in that: The movable plate (11) is provided with buffer grooves (18) on both sides of the top. Buffer columns (19) are installed inside the buffer grooves (18). Spring B (17) is installed inside the buffer grooves (18) at the bottom of the buffer columns (19).

7. A pneumatic shaft with a safety valve according to claim 1, characterized in that: There are eight clamping bars (2) in total, and the eight clamping bars (2) are evenly distributed on the outer surface of the air shaft (1).

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