Pneumatic expander

Abstract

The utility model relates to the field of dilators, in particular to a pneumatic dilator. The utility model provides a pneumatic expander which can use compressed air as a power source to expand a deformed sunken ship for rescue, is simple to operate and convenient to carry, facilitates sunken ship rescue, and improves use convenience and rescue efficiency. A pneumatic expander comprises a gas cylinder, a connecting piece, a supporting frame, a ball valve and the like, the upper portion of the gas cylinder is connected with the connecting piece, the front side of the connecting piece is connected with the supporting frame, the supporting frame is connected with the gas cylinder, and the interior of the connecting piece is rotationally connected with the ball valve. Compressed gas in the gas cylinder flows into the cylinder body through rotation of the ball valve, the piston moves under the action of the compressed gas, and then the supporting rod and the supporting face are driven to move and open, so that the compressed gas can be used as a power source to open a deformed sunken ship for rescue, operation is easy, carrying is convenient, sunken ship rescue is convenient, and practicability is high. And the use convenience and the rescue efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of expanders, in particular to a pneumatic expander. Background Art

[0002] An expander is a tool or device used to enlarge holes or openings. They are widely used in many fields, such as mechanical processing, construction, pipeline installation, emergency rescue, etc. According to different application scenarios and needs, expanders can have different types and technical characteristics. Pneumatic expanders are tools that use compressed air as a power source and have high working efficiency.

[0003] When conducting underwater shipwreck rescue, if the hull is deformed, it is usually necessary to propel the deformed part open for further rescue work. However, traditional hydraulic expanders or jacks are large in size, inconvenient to operate, and may be affected by water pressure in an underwater environment, making them difficult to use, resulting in low rescue efficiency.

[0004] Therefore, it is necessary to design a pneumatic expander that can use compressed gas as a power source to expand a deformed sunken ship for rescue, which is simple to operate, easy to carry, convenient for sunken ship rescue, and improves the convenience of use and the efficiency of rescue. Utility Model Content

[0005] In order to overcome the shortcomings of traditional hydraulic expanders or jacks, which are large in size, inconvenient to operate, and may be difficult to use due to the influence of water pressure in underwater environments, thus resulting in low rescue efficiency, the utility model provides a pneumatic expander that can use compressed gas as a power source to expand a deformed sunken ship for rescue. The utility model is simple to operate, easy to carry, convenient for sunken ship rescue, and improves convenience of use and rescue efficiency.

[0006] The technical solution is: a pneumatic expander, including a gas cylinder, a connecting piece, a support frame, a ball valve, a bottle body, a pressure relief valve, a driving assembly and an expansion assembly, the upper part of the gas cylinder is connected to the connecting piece, the front side of the connecting piece is connected to the support frame, the support frame is connected to the gas cylinder, the ball valve is rotatably connected inside the connecting piece, the upper side of the connecting piece is connected to the bottle body, the upper side of the middle of the bottle body is connected to the pressure relief valve, a driving assembly is provided between the support frame and the ball valve, and expansion assemblies are provided on both the left and right parts of the bottle body.

[0007] As a preferred technical solution of the utility model, the bottle body is T-shaped.

[0008] As a preferred technical solution of the utility model, the driving assembly includes a worm wheel and a worm, the front part of the ball valve is connected to the worm wheel, the support frame is rotatably connected to the worm, and the worm wheel and the worm are meshed with each other.

[0009] As a preferred technical solution of the present utility model, a handle is provided on the right part of the worm.

[0010] As a preferred technical solution of the present utility model, the expansion assembly includes a spring, a piston, a support rod, a support surface, a mounting frame, a first rotating frame and a second rotating frame. Pistons are slidably connected to both the left and right parts of the bottle body. Springs are connected between the pistons and the bottle body. Support rods are connected to the outside of the pistons, and the support rods are slidably connected to the bottle body. Support surfaces are connected to the outside of the support rods. Mounting frames are sleeved on the outside of the support surfaces. The first rotating frame is rotatably connected to the right mounting frame, and the second rotating frame is rotatably connected to the left mounting frame. The first rotating frame and the second rotating frame are rotatably connected to each other.

[0011] As a preferred technical solution of the present utility model, anti-slip lines are provided on the support surface.

[0012] Compared with the prior art, the present utility model has the following advantages: 1. By rotating the ball valve of the present utility model, the compressed gas in the gas cylinder flows into the bottle body. Under the action of the compressed gas, the piston moves, and then drives the support rod and the support surface to move and expand, so that the compressed gas can be used as a power source to expand the deformed sunken ship for rescue. The operation is simple, easy to carry, convenient for sunken ship rescue, and improves the convenience of use and the efficiency of rescue.

[0013] 2. By sleeving the mounting frame on the support surface of the present utility model, then inserting the first rotating frame and the second rotating frame into a small space, and then moving and expanding the support surface, thereby driving the first rotating frame and the second rotating frame to rotate and expand for expansion, so that the small space on the sunken ship can be expanded, which is convenient for the installation and disassembly of the mounting frame, the first rotating frame and the second rotating frame, and is convenient for inserting into a small space for expansion. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 2 It is a sectional three-dimensional structural schematic diagram of the present utility model.

[0016] The labels in the figure are: 1 - gas cylinder, 2 - connecting piece, 21 - support frame, 22 - ball valve, 23 - worm gear, 24 - worm, 3 - bottle body, 4 - spring, 5 - piston, 6 - support rod, 7 - support surface, 8 - pressure relief valve, 9 - mounting frame, 10 - first rotating frame, 11 - second rotating frame. Detailed Embodiment

[0017] The present utility model will be further described below in conjunction with specific embodiments. It should also be noted that unless otherwise clearly specified and defined, terms such as "set", "installed", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] A pneumatic expander, as Figure 1 and Figure 2 shown, includes a gas cylinder 1, a connecting piece 2, a support frame 21, a ball valve 22, a worm gear 23, a worm 24, a bottle body 3, a spring 4, a piston 5, a support rod 6, a support surface 7, a pressure relief valve 8, a mounting bracket 9, a first rotating bracket 10, and a second rotating bracket 11. The upper part of the gas cylinder 1 is connected to the connecting piece 2. The front side of the connecting piece 2 is connected to the support frame 21, and the support frame 21 is connected to the gas cylinder 1. The ball valve 22 is rotatably connected inside the connecting piece 2. The front part of the ball valve 22 is connected to the worm gear 23. The worm 24 is rotatably connected to the support frame 21. The worm gear 23 and the worm 24 are meshed with each other. A handle is provided on the right part of the worm 24 to facilitate hand-held rotation of the worm 24. The upper side of the connecting piece 2 is connected to the bottle body 3. The bottle body 3 is T-shaped. Pistons 5 are slidably connected to both the left and right parts of the bottle body 3. Springs 4 are connected between the pistons 5 and the bottle body 3 respectively. Support rods 6 are connected to the outside of the pistons 5, and the support rods 6 are slidably connected to the bottle body 3. Support surfaces 7 are connected to the outside of the support rods 6, and anti-slip patterns are provided on the support surfaces 7 to prevent displacement during rescue use. The pressure relief valve 8 is connected to the upper side of the middle part of the bottle body 3. Mounting brackets 9 are sleeved on the outside of the support surfaces 7. The first rotating bracket 10 is rotatably connected to the right mounting bracket 9, and the second rotating bracket 11 is rotatably connected to the left mounting bracket 9. The first rotating bracket 10 and the second rotating bracket 11 are rotatably connected to each other.

[0019] When a pneumatic expander is needed for sunken ship rescue, this device can be used. Bring this device to the place where sunken ship rescue is required, and then have a diver carry this device into the water so that the support surface 7 contacts the sunken ship. The anti-slip pattern is used for anti-slip. Then, turn the worm 24 through the handle. The worm 24 and the worm gear 23 engage and move, causing the worm gear 23 to rotate. Further drive the ball valve 22 to rotate, so that the compressed gas in the gas cylinder 1 flows out, passes through the ball valve 22 and the connecting piece 2, and then flows into the bottle body 3. The bottle body 3 is T-shaped. Under the action of the compressed gas, the piston 5 moves, further driving the support rod 6 and the support surface 7 to move and expand. The spring 4 is stretched, and then the deformed sunken ship is expanded for rescue. Thus, the compressed gas can be used as a power source to expand the deformed sunken ship for rescue. The operation is simple, easy to carry, convenient for sunken ship rescue, improving the convenience of use and the efficiency of rescue. When it is necessary to expand a small space on the sunken ship, sleeve the mounting bracket 9 on the support surface 7, then insert the first rotating bracket 10 and the second rotating bracket 11 into the small space, and then make the compressed gas in the gas cylinder 1 flow out, causing the piston 5, the support rod 6 and the support surface 7 to move and expand, and further driving the first rotating bracket 10 and the second rotating bracket 11 to rotate and expand for expansion. Thus, the small space on the sunken ship can be expanded. It is convenient for the installation and disassembly of the mounting bracket 9, the first rotating bracket 10 and the second rotating bracket 11, and convenient to insert into the small space for expansion. After the rescue is completed, open the pressure relief valve 8 to discharge the compressed gas. The spring 4 rebounds, and the piston 5, the support rod 6 and the support surface 7 move back to their original positions, causing the first rotating bracket 10 and the second rotating bracket 11 to rotate in the opposite direction and reset. Then remove the mounting bracket 9, making the mounting bracket 9 separate from the support surface 7, and then remove the first rotating bracket 10 and the second rotating bracket 11. Subsequently, just take this device away.

[0020] The above embodiments are provided for those skilled in the art to implement or use the present utility model. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present utility model. Therefore, the protection scope of the present utility model is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A pneumatic dilator, characterized in that: The invention comprises a gas cylinder (1), a connecting piece (2), a support frame (21), a ball valve (22), a bottle body (3), a pressure relief valve (8), a driving assembly and an expansion assembly. The upper part of the gas cylinder (1) is connected to the connecting piece (2), the front side of the connecting piece (2) is connected to the supporting frame (21), the supporting frame (21) is connected to the gas cylinder (1), the inner part of the connecting piece (2) is rotatably connected to the ball valve (22), the upper side of the connecting piece (2) is connected to the bottle body (3), the upper middle part of the bottle body (3) is connected to the pressure relief valve (8), a driving assembly is arranged between the supporting frame (21) and the ball valve (22), and the left and right parts of the bottle body (3) are both provided with expansion assemblies.

2. A pneumatic dilator according to claim 1, characterized in that: The bottle body (3) is T-shaped.

3. A pneumatic dilator according to claim 2, characterized in that: The driving assembly comprises a worm wheel (23) and a worm (24); the front part of the ball valve (22) is connected to the worm wheel (23); the support frame (21) is rotatably connected to the worm wheel (24); and the worm wheel (23) and the worm (24) are meshed with each other.

4. A pneumatic dilator according to claim 3, characterized in that: The right portion of the worm (24) is provided with a handle.

5. A pneumatic dilator according to claim 4, characterized in that: The expansion assembly comprises a spring (4), a piston (5), a support rod (6), a support surface (7), a mounting frame (9), a first rotating frame (10) and a second rotating frame (11). The left and right parts of the bottle body (3) are both slidably connected to the piston (5). The piston (5) and the bottle body (3) are both connected to the spring (4). The outer side of the piston (5) is connected to the support rod (6). The support rod (6) is slidably connected to the bottle body (3). The outer side of the support rod (6) is connected to the support surface (7). The outer side of the support surface (7) is sleeved with the mounting frame (9). The first rotating frame (10) is rotatably connected to the mounting frame (9) on the right side. The second rotating frame (11) is rotatably connected to the mounting frame (9) on the left side. The first rotating frame (10) and the second rotating frame (11) are rotatably connected.

6. A pneumatic dilator according to claim 5, characterized in that: The support surface (7) is provided with anti-slip grooves.

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