Inflation expansion pipe convenient to replace

Abstract

The utility model relates to the technical field of inflatable tubes, in particular to an inflatable tube convenient to replace. According to the technical scheme, the inflatable tube comprises a threaded rod, the threaded rod rotates in a threaded hole to enable the threaded rod to move upwards, the threaded rod moves upwards to enable a clamping ring to move upwards, the clamping ring moves upwards to enable a movable rod to slide in the inner wall of a movable opening, and the movable rod moves to enable a pull plate to make contact with the inner wall of the top of a movable groove; the threaded rod continues to be rotated to enable the pulling plate to apply force to the inner wall of the top of the movable groove, at the moment, the air expansion pipe deforms, then the pipe expander is inserted into a proper position in the air expansion pipe through the end of the air expansion pipe, and the end of the air expansion pipe and the pipe expander can be limited by reversing the operation. The connecting rod is rotated to enable the pressing plate to enable the inflatable tube and the protruding part of the tube expander to be in contact and fixed, when the tube expander and the inflatable tube are disassembled, the initial operation is repeated, and therefore the effect that the inflatable tube is convenient to replace can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air expansion tubes, in particular to an air expansion tube which is easy to replace. Background Art

[0002] Rubber hose refers to the pipe used for gas transmission, which is commonly used in gas welding, gas cutting, various gas shielded welding, plasma arc welding and cutting, etc. There are two types of rubber hoses for welding. According to the national standard, the blue hose is an oxygen hose with a maximum operating pressure of 1.5MPa; the red hose or black hose is an acetylene hose with an allowable operating pressure of 0.5~1.0MPa. The characteristics of rubber tubes include physiological inertness, UV resistance, ozone resistance, high and low temperature resistance (-80 to 300 degrees), high transparency, strong resilience, permanent compression resistance, oil resistance, stamping resistance, acid and alkali resistance, wear resistance, flame retardancy, voltage resistance, and electrical conductivity. However, in actual use, inflatable expansion tubes with similar structures still have many defects, such as: generally, the opening of one end of the inflatable tube is clamped with the end of the expander with an outer ring, and then wrapped with tools such as steel wire to make the inflatable tube fixed and stable. When replacing, the staff needs to twist the steel wire first, and then pull the inflatable tube hard to disassemble it. The operation is relatively complicated, so an inflatable expansion tube that is easy to replace is needed. Utility Model Content

[0003] The purpose of the utility model is to provide an inflatable expansion tube that is easy to replace, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inflatable expansion tube that is easy to replace, comprising an inflatable tube, the inflatable tube comprising an end portion and an extension portion, the outer wall of the end portion of the inflatable tube is sleeved with a fixing hoop, the top outer wall and the bottom outer wall of the fixing hoop are both provided with threaded holes, the inner wall of the threaded hole is connected to a threaded rod through a thread, the side of the threaded rod away from the end portion is fixedly connected to a rotating block, the side of the threaded rod away from the rotating block is rotatably connected to a clamping ring through a bearing, the inner wall of the clamping ring is an arc-shaped structure, and the clamping ring is in contact with the outer wall of the inflatable tube, and the threaded rod is rotated, and the rotation of the threaded rod in the threaded hole can cause the threaded rod to move up. The upward movement of the threaded rod can cause the clamping ring to move upward, and the upward movement of the clamping ring can cause the movable rod to slide in the inner wall of the movable opening. The movement of the movable rod can cause the pull plate to contact the top inner wall of the movable groove. Continuing to rotate the threaded rod can cause the pull plate to apply force to the top inner wall of the movable groove. At this time, the inflatable tube will be deformed, and then the expander is inserted into the appropriate position in the inflatable tube through the end of the inflatable tube. Reversing the above operation can form a limit between the end of the inflatable tube and the expander, and rotating the connecting rod can cause the pressure plate to contact and fix the inflatable tube and the raised part of the expander. When the expander and the inflatable tube are disassembled, the initial operation can be repeated, thereby achieving the effect of facilitating the replacement of the inflatable tube.

[0005] Preferably, a movable groove is provided in the end of the inflatable tube, and a pull plate is slidably connected to the inner wall of the movable groove. A movable opening extending into the movable groove is provided on the outer wall of the end of the inflatable tube. The clamp is fixedly connected to a movable rod that forms a sliding fit with the movable opening near the inner wall of the inflatable tube, and a sliding fit is formed between the movable rod and the pull plate. The movable rod is arranged to slide in the inner wall of the movable opening. The movement of the movable rod can make the pull plate slide in the inner wall of the movable groove. The movement of the pull plate can apply force to the top inner wall or the bottom inner wall of the movable groove. When force is applied to the top inner wall, the inflatable tube can expand. When force is applied to the bottom inner wall, the displacement between the inflatable tube and the expander can be limited.

[0006] Preferably, a guard ring is fixedly connected to the surface of the movable rod, and a side of the guard ring close to the movable port has a wavy structure. The wavy structure design can increase the friction between the guard ring and the inner wall of the movable port, so that after the position of the movable rod is adjusted, it is difficult for the movable rod to move on its own, and the position of the pull plate can be fixed, thereby preventing separation between the expander and the gas expansion tube.

[0007] Preferably, protective plates are fixedly connected to both sides of the pull plate, and the side of the protective plate away from the pull plate has an arc-shaped structure. The arc-shaped structure design can make the contact surface between the protective plate and the inner wall of the movable groove an arc surface, which can protect the structure of the equipment and prevent the corners of the pull plate from causing damage to the inner wall of the movable groove.

[0008] Preferably, connecting ports are provided on both sides of one end of the clamping ring, and the inner wall of the connecting port is connected to a connecting rod through a thread. The connecting rod can be rotated in the inner wall of the connecting port, so that the pressure plate can press the expander and the gas expansion tube.

[0009] Preferably, one end of the connecting rod is rotatably connected to a pressure plate via a bearing, and the pressure plate has an arc-shaped structure, and the pressure plate contacts the outer wall of the inflatable tube. The arc-shaped structure design can increase the contact area between the pressure plate and the extrusion surface of the inflatable tube and the expander, so that the two can be fixed and tightened.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. By rotating the threaded rod, the rotation of the threaded rod in the threaded hole can make the threaded rod move up, and the upward movement of the threaded rod can make the clamping ring move up, and the upward movement of the clamping ring can make the movable rod slide in the inner wall of the movable opening, and the movement of the movable rod can make the pull plate contact the top inner wall of the movable groove, and continue to rotate the threaded rod to make the pull plate apply force to the top inner wall of the movable groove, and the inflatable tube will be deformed at this time, and then the expander is inserted into the appropriate position in the inflatable tube through the end of the inflatable tube, and the above operation is reversed to form a limit between the end of the inflatable tube and the expander, and rotating the connecting rod can make the pressure plate contact and fix the inflatable tube with the raised part of the expander, and when the expander and the inflatable tube are disassembled, the initial operation can be repeated, so the effect of facilitating the replacement of the inflatable tube can be achieved.

[0012] 2. The arc-shaped protective plate can make the contact surface between the protective plate and the inner wall of the movable groove an arc surface, which can protect the structure of the equipment and prevent the corner of the pull plate from causing damage to the inner wall of the movable groove; the connecting rod can be rotated in the inner wall of the connecting port, so that the pressure plate can press the expander and the gas expansion tube; the arc-shaped pressure plate can increase the contact area between the pressure plate and the extrusion surface of the gas expansion tube and the expander, so that the two can be fixed and tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0017] In the figure: 1, inflation tube; 2, fixing hoop; 3, threaded hole; 4, threaded rod; 5, rotating block; 6, snap ring; 9, movable groove; 10, movable opening; 11, movable rod; 12, pull plate; 13, guard ring; 14, protective plate; 17, connection port; 18, connecting rod; 19, pressure plate DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Embodiment 1

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the inflatable expansion tube that is easy to replace proposed by the utility model includes an inflatable tube 1, and the inflatable tube 1 includes an end portion and an extension portion. The outer wall of the end portion of the inflatable tube 1 is sleeved with a fixing hoop 2, and the top outer wall and the bottom outer wall of the fixing hoop 2 are both provided with threaded holes 3. The inner wall of the threaded hole 3 is connected to a threaded rod 4 through a thread, and the side of the threaded rod 4 away from the end portion is fixedly connected to a rotating block 5, and the side of the threaded rod 4 away from the rotating block 5 is rotatably connected to a clamping ring 6 through a bearing, and the inner wall of the clamping ring 6 is an arc-shaped structure, and the clamping ring 6 is in contact with the outer wall of the inflatable tube 1, a movable groove 9 is provided in the end of the inflatable tube 1, and a pull plate 12 is slidably connected to the inner wall of the movable groove 9. A movable opening 10 extending into the movable groove 9 is provided on the outer wall of the end of the inflatable tube 1. The clamping ring 6 is fixedly connected to a movable rod 11 that forms a sliding fit with the movable opening 10 near the inner wall of the inflatable tube 1, and a sliding fit is formed between the movable rod 11 and the pull plate 12. A retaining ring 13 is fixedly connected to the surface of the movable rod 11, and a side of the retaining ring 13 near the movable opening 10 is in a wavy structure.

[0021] The working principle of the inflatable expansion tube that is easy to replace based on the first embodiment is: by rotating the threaded rod 4, the rotation of the threaded rod 4 in the threaded hole 3 can make the threaded rod 4 move up, the upward movement of the threaded rod 4 can make the clamping ring 6 move up, and the upward movement of the clamping ring 6 can make the movable rod 11 slide in the inner wall of the movable opening 10, and the movement of the movable rod 11 can make the pull plate 12 contact the top inner wall of the movable groove 9, and continue to rotate the threaded rod 4 to make the pull plate 12 apply force to the top inner wall of the movable groove 9, at this time, the inflatable tube 1 will be deformed, and then the expander is inserted into the appropriate position in the inflatable tube 1 through the end of the inflatable tube 1, and the above operation is reversed to form a limit between the end of the inflatable tube 1 and the expander, and the rotating connecting rod 18 can make the pressing plate 19 contact and fix the inflatable tube 1 with the convex part of the expander, and when the expander and the inflatable tube 1 are disassembled, the initial operation can be repeated, so the effect of easy replacement of the inflatable expansion tube can be achieved;

[0022] The movable rod 11 can slide in the inner wall of the movable opening 10, and the movement of the movable rod 11 can make the pull plate 12 slide in the inner wall of the movable groove 9. The movement of the pull plate 12 can apply force to the top inner wall or the bottom inner wall of the movable groove 9. When the force is applied to the top inner wall, the inflatable tube 1 can be expanded. When the force is applied to the bottom inner wall, the displacement between the inflatable tube 1 and the tube expander can be limited.

[0023] The wave-shaped retaining ring 13 can increase the friction between the retaining ring 13 and the inner wall of the movable opening 10, so that the movable rod 11 is difficult to move after the position is adjusted, and the position of the pulling plate 12 can be fixed, thereby preventing the expander and the gas expansion tube 1 from separating.

[0024] Embodiment 2

[0025] like Figure 1 , Figure 2 , Figure 4 As shown, the inflatable expansion tube that is easy to replace proposed by the utility model, compared with the first embodiment, has protective plates 14 fixedly connected to both sides of the pull plate 12 of this embodiment, and the side of the protective plate 14 away from the pull plate 12 has an arc-shaped structure, and connecting ports 17 are provided on both sides of one end of the clamping ring 6, and the inner wall of the connecting port 17 is connected to a connecting rod 18 through a thread, and one end of the connecting rod 18 is rotatably connected to a pressure plate 19 through a bearing, and the pressure plate 19 has an arc-shaped structure and contacts with the outer wall of the inflatable tube 1.

[0026] The arc-shaped protective plate 14 can make the contact surface between the protective plate 14 and the inner wall of the movable groove 9 an arc surface, which can protect the structure of the equipment and prevent the corner of the pull plate 12 from causing damage to the inner wall of the movable groove 9;

[0027] The connecting rod 18 can rotate in the inner wall of the connecting port 17, so that the pressing plate 19 can press the tube expander and the gas expansion tube 1 tightly;

[0028] The arc-shaped pressing plate 19 can increase the contact area between the pressing plate 19 and the extrusion surface of the inflatable tube 1 and the tube expander, so that the two can be fixed and tightened.

[0029] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An inflatable tube that is easy to replace, comprising an inflatable tube (1), wherein the inflatable tube (1) comprises an end portion and an extension portion, and is characterized in that: The outer wall of the end of the inflation tube (1) is sleeved with a fixing hoop (2), the top outer wall and the bottom outer wall of the fixing hoop (2) are both provided with threaded holes (3), the inner wall of the threaded hole (3) is connected to a threaded rod (4) through a thread, the side of the threaded rod (4) away from the end is fixedly connected to a rotating block (5), the side of the threaded rod (4) away from the rotating block (5) is rotatably connected to a clamping ring (6) through a bearing, the inner wall of the clamping ring (6) is in an arc-shaped structure, and the clamping ring (6) is in contact with the outer wall of the inflation tube (1).

2. The easily replaceable inflation tube according to claim 1, characterized in that: A movable groove (9) is provided in the end of the inflatable tube (1), and a pull plate (12) is slidably connected to the inner wall of the movable groove (9). A movable opening (10) extending into the movable groove (9) is provided on the outer wall of the end of the inflatable tube (1). A movable rod (11) is fixedly connected to the inner wall of the inflatable tube (1) near the inner wall of the inflatable tube (1), and the movable rod (11) is slidably matched with the movable opening (10). A slidable fit is formed between the movable rod (11) and the pull plate (12).

3. The easily replaceable inflatable tube according to claim 2, characterized in that: A guard ring (13) is fixedly connected to the surface of the movable rod (11), and a surface of the guard ring (13) close to the movable opening (10) is in a wavy structure.

4. The easily replaceable inflation tube according to claim 3, characterized in that: Both sides of the pull plate (12) are fixedly connected with protective plates (14), and a side of the protective plate (14) away from the pull plate (12) is in an arc-shaped structure.

5. The easily replaceable inflation tube according to claim 1, characterized in that: One end of the clamping ring (6) is provided with connecting openings (17) on both sides, and the inner wall of the connecting opening (17) is connected to a connecting rod (18) via a thread.

6. The easily replaceable inflation tube according to claim 5, characterized in that: One end of the connecting rod (18) is rotatably connected to a pressing plate (19) via a bearing. The pressing plate (19) is in an arc-shaped structure, and the pressing plate (19) is in contact with the outer wall of the inflation tube (1).

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