Corrugated pipe convenient to butt joint

Abstract

The utility model discloses a corrugated pipe convenient to butt joint, and belongs to the technical field of corrugated pipes. A corrugated pipe facilitating butt joint comprises a corrugated pipe body, a connecting sleeve is fixedly connected to one end of the corrugated pipe body, a positioning sleeve is fixedly connected to the other end of the corrugated pipe body, a positioning block is rotationally connected into the positioning sleeve, and an annular plate is arranged in the positioning sleeve and located on the outer side of the positioning block in a sleeving mode. A connecting rod is rotatably connected between the annular plate and the positioning block, a groove is formed in the positioning block, a sliding block is slidably connected in the groove, first sliding grooves are formed in the positions, located on the two corresponding side edges of the sliding block, in the positioning block, first sliding rods are slidably connected in the first sliding grooves, and the first sliding rods are fixedly connected with the sliding block. According to the corrugated pipe convenient to butt joint, a user only needs to insert the connecting sleeve of one corrugated pipe body into the positioning sleeve of the other corrugated pipe body and then forwards screw the bolt, and operation is convenient and easy.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, and more specifically to a corrugated pipe which is convenient for docking. Background Art

[0002] Bellows refers to a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and expansion direction. Bellows are widely used in instruments and meters. Their main purpose is to serve as a measuring element of pressure measuring instruments to convert pressure into displacement or force.

[0003] A Chinese patent disclosed "a corrugated pipe convenient for docking" with patent number CN202022958206.9. The scheme records "a corrugated pipe convenient for docking, comprising a bellows main body one, a bellows main body two is arranged on the left side of the bellows main body one, the left end of the bellows main body one is connected with a convex sleeve, the right end of the bellows main body two is connected with a concave sleeve, the left end of the convex sleeve extends to the interior of the concave sleeve, the surface of the concave sleeve is provided with a positioning sleeve, and the inner wall of the positioning sleeve is fixedly connected to the surface of the concave sleeve." The utility model is coordinated by the bellows main body one, the bellows main body two, the convex sleeve, the concave sleeve, the positioning sleeve, the fixing mechanism and the positioning mechanism, so as to achieve the advantage of facilitating the docking of the bellows, solves the problem that the existing bellows connection method is flange and bolt connection, which easily makes the bellows inconvenient for docking, and there are many connecting bolts, which wastes the user's time and increases the user's labor, and improves the practicality of the bellows to a certain extent.

[0004] However, there are still certain problems. When the device is in use, when the bellows main body one and the bellows main body two are connected, the user needs to align the threaded hole on the bellows main body one with the fixing bolt on the bellows main body two. Since the fixing bolt is set on the Z-shaped plate, and the Z-shaped plate as a whole can rotate, the Z-shaped plate needs to be rotated to fit with the bellows main body one after the bellows main body one and the bellows main body two are connected, and it is also necessary to ensure that the fixing bolt on the Z-shaped plate can be aligned with the threaded hole, which is very troublesome to operate. At the same time, the Z-shaped plate is set on both sides of the bellows main body two, and the user needs to fully operate twice, and the operating position needs to be changed during the process, which is relatively laborious and inconvenient. Utility Model Content

[0005] The purpose of the utility model is to provide a corrugated pipe that is convenient for docking, so as to solve the problems raised in the above background technology:

[0006] When the existing bellows main body 1 and the bellows main body 2 are connected, the user needs to align the threaded hole on the bellows main body 1 with the fixing bolt on the bellows main body 2. Since the fixing bolt is set on the Z-shaped plate, and the Z-shaped plate can rotate as a whole, the bellows main body 1 needs to be rotated to fit with the bellows main body 1 after the bellows main body 2 is connected, and it is also necessary to ensure that the fixing bolt on the Z-shaped plate can be aligned with the threaded hole, which is very troublesome to operate. At the same time, the Z-shaped plate is set on both sides of the bellows main body 2. The user needs to fully operate twice and change the operating position during the process, which is more laborious and inconvenient.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The lockhole that is formed on the upper and lower ends of the belt is formed on the upper and lower ends of the belt is fixedly connected to the bottom end of the belt, and the lockhole that is formed on the upper and lower ends of the belt is formed on the bottom end of the belt.

[0009] By adopting the above technical scheme, the connecting sleeve of one bellows body is inserted into the positioning sleeve of another bellows body, so that the two bellows bodies are initially connected, and then the bolt on one side of the positioning sleeve is forwardly screwed, at this time the bolt will drive the slider in the groove to move inward, and the slider drives a positioning block to be inserted into the positioning groove on the outer side of the connecting sleeve through the first sliding rod and the first sliding groove, and at the same time, the positioning block drives the annular plate set on the outer side to rotate through the connecting rod, and the annular plate also drives the other four positioning blocks to be inserted into the positioning groove through the connecting rod, and finally the connection of the two bellows bodies is completed. The user only needs to insert the connecting sleeve of one bellows body into the positioning sleeve of the other bellows body and then forwardly screw the bolt, which is convenient and simple to operate.

[0010] Preferably, there are five positioning blocks in total, and the five positioning blocks are equidistantly distributed.

[0011] By adopting the above technical solution, five positioning blocks are equidistantly distributed inside the positioning sleeve and are connected to each other through the annular plate and the connecting rod. When one of the positioning blocks rotates, the other positioning blocks can move together and be combined with or separated from the positioning groove.

[0012] Preferably, a second sliding groove is provided inside the annular plate and on one side of the connecting rod, a second sliding rod is slidably connected inside the second sliding groove, and the second sliding rod is fixedly connected to the positioning sleeve.

[0013] By adopting the above technical solution, the annular plate is positioned by the second sliding rod and the second sliding groove, thereby ensuring the stability of the annular plate during rotation.

[0014] Preferably, the positioning block and the second sliding groove are both arc-shaped structures.

[0015] By adopting the above technical solution, since the annular plate needs to rotate, it is positioned by the second slide groove and the second slide rod. The arc-shaped second slide groove is cocentric with the rotating annular plate, ensuring that it will not get stuck.

[0016] Preferably, a sealing ring is fixedly connected to a side of the connecting sleeve that is away from the bellows body, and a rubber gasket is fixedly connected to a side of the positioning block that is away from the connecting rod.

[0017] By adopting the above technical solution, the sealing ring enhances the sealing between the two bellows bodies, and the rubber gasket increases the friction between the positioning block and the positioning groove, thereby ensuring the stability of the connection between the two bellows bodies.

[0018] Preferably, the cross section of the positioning groove is a trapezoidal structure.

[0019] By adopting the above technical solution, the inclined surface of the trapezoidal positioning groove is away from the bellows body. Through the setting of the inclined surface, the positioning block can squeeze the inclined surface when it is inserted into the positioning groove, so that the connection between the two butted bellows bodies is tightened.

[0020] Preferably, a through groove is provided inside the annular plate, and the through groove is used in conjunction with a bolt.

[0021] By adopting the above technical solution, the bolts pass through the through slots, ensuring that the bolts can be screwed normally, and the through slots are fan-shaped as a whole, so that the annular plate will not be affected by the bolts when rotating.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1) When the bellows that are convenient for docking are in use, the bolt on one side of the positioning sleeve is screwed forward, and the bolt will drive the slider in the groove to move inward, and the slider will drive a positioning block to be inserted into the positioning groove on the outer side of the connecting sleeve through the first sliding rod and the first sliding groove. At the same time, the positioning block drives the annular plate set on the outer side to rotate through the connecting rod, and the annular plate also drives the other four positioning blocks to be inserted into the positioning grooves through the connecting rod, and finally the docking of the two bellows bodies is completed. The user only needs to insert the connecting sleeve of one bellows body into the positioning sleeve of the other bellows body and then screw the bolt forward, which is convenient and simple to operate.

[0024] 2) When the bellows that are easy to connect are used, the sealing ring is provided to enhance the sealing between the two bellows bodies, and the rubber gasket is provided to increase the friction between the positioning block and the positioning groove, thereby ensuring the stability of the connection between the two bellows bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the positioning sleeve of the utility model;

[0027] Figure 3 It is a cross-sectional schematic diagram of the positioning sleeve of the utility model;

[0028] Figure 4 This is a structural schematic diagram of a positioning block of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the annular plate of the utility model.

[0030] Explanation of the numbers in the figure: 1. bellows body; 2. connecting sleeve; 3. positioning sleeve; 4. positioning block; 5. annular plate; 6. connecting rod; 7. groove; 8. slider; 9. first slide groove; 10. first slide rod; 11. bolt; 12. positioning groove; 13. second slide groove; 14. second slide rod; 15. sealing ring; 16. rubber gasket; 17. through groove. DETAILED DESCRIPTION

[0031] Example

[0032] When the existing bellows main body 1 and the bellows main body 2 are connected, the user needs to align the threaded hole on the bellows main body 1 with the fixing bolt on the bellows main body 2. Since the fixing bolt is set on the Z-shaped plate, and the Z-shaped plate can rotate as a whole, the bellows main body 1 needs to be rotated to fit with the bellows main body 1 after the bellows main body 2 is connected, and it is also necessary to ensure that the fixing bolt on the Z-shaped plate can be aligned with the threaded hole, which is very troublesome to operate. At the same time, the Z-shaped plate is set on both sides of the bellows main body 2. The user needs to fully operate twice and change the operating position during the process, which is more laborious and inconvenient.

[0033] See also Figures 1 to 5 A bellows convenient for docking comprises a bellows body 1, one end of the bellows body 1 is fixedly connected with a connecting sleeve 2, the other end of the bellows body 1 is fixedly connected with a positioning sleeve 3, the interior of the positioning sleeve 3 is rotatably connected with a positioning block 4, the interior of the positioning sleeve 3 and the outer side of the positioning block 4 are provided with an annular plate 5, a connecting rod 6 is rotatably connected between the annular plate 5 and the positioning block 4, the positioning block 4 drives the annular plate 5 sleeved on the outer side to rotate through the connecting rod 6, and the annular plate 5 also drives the other four positioning blocks 4 to be stuck in the positioning groove 12 through the connecting rod 6, a groove 7 is provided inside the positioning block 4, a slider 8 is slidably connected inside the groove 7, a first slide groove 9 is provided inside the positioning block 4 and on both sides of the corresponding sides of the slider 8, and the first slide groove 9 is slidably connected inside The first slide bar 10 is fixedly connected to the slider 8, and the outer rotation of the slider 8 is connected with a bolt 11. The bolt 11 on one side of the positioning sleeve 3 is screwed forward. At this time, the bolt 11 will drive the slider 8 in the groove 7 to move inward, and the slider 8 drives a positioning block 4 to be inserted into the positioning groove 12 on the outer side of the connecting sleeve 2 through the first slide bar 10 and the first slide groove 9. The bolt 11 penetrates the positioning sleeve 3 and extends to the outside of the positioning sleeve 3. The bolt 11 is threadedly connected to the positioning sleeve 3. A positioning groove 12 is provided on the outer side of the connecting sleeve 2. The positioning groove 12 is used in conjunction with the positioning block 4. The user only needs to insert the connecting sleeve 2 of one bellows body 1 into the positioning sleeve 3 of another bellows body 1 and then screw the bolt 11 forward. The operation is convenient and simple.

[0034] There are five positioning blocks 4 in total, and the five positioning blocks 4 are equidistantly distributed. The five positioning blocks 4 are connected to each other through the annular plate 5 and the connecting rod 6. When one of the positioning blocks 4 rotates, the other positioning blocks 4 can move together; a second slide groove 13 is provided inside the annular plate 5 and on one side of the connecting rod 6. A second slide rod 14 is slidably connected inside the second slide groove 13. The second slide rod 14 is fixedly connected to the positioning sleeve 3. The second slide rod 14 and the second slide groove 13 position the annular plate 5 to ensure that the annular plate 5 can be stable when rotating; the positioning block 4 and the second slide groove 13 are both arc structures. Since the annular plate 5 needs to rotate, it is positioned by the second slide groove 13 and the second slide rod 14. The second slide groove 13 of the arc structure is concentric with the rotating annular plate 5 to ensure that it will not get stuck. Condition; a sealing ring 15 is fixedly connected to the side of the outside of the connecting sleeve 2 away from the bellows body 1, and a rubber gasket 16 is fixedly connected to the side of the outside of the positioning block 4 away from the connecting rod 6. The sealing ring 15 enhances the sealing between the two bellows bodies 1, and the rubber gasket 16 increases the friction between the positioning block 4 and the positioning groove 12; the cross-section of the positioning groove 12 is a trapezoidal structure, and the inclined surface of the positioning groove 12 of the trapezoidal structure is away from the bellows body 1. The inclined surface enables the positioning block 4 to squeeze the inclined surface when it is inserted into the positioning groove 12, so that the connection between the two bellows bodies 1 is tighter; a through groove 17 is opened inside the annular plate 5, and the through groove 17 is used in conjunction with the bolt 11. The bolt 11 passes through the through groove 17 to ensure that the bolt 11 can be screwed normally and will not be affected when the annular plate 5 rotates.

[0035] The use steps of the utility model are as follows: when the bellows that are convenient for docking are in use, the user inserts the connecting sleeve 2 of one bellows main body 1 into the positioning sleeve 3 of the other bellows main body 1. At this time, the two bellows main bodies 1 are preliminarily docked, and then the bolt 11 on one side of the positioning sleeve 3 is forwardly screwed. At this time, the bolt 11 will drive the slider 8 in the groove 7 to move inward, and the slider 8 drives a positioning block 4 to be inserted into the positioning groove 12 on the outer side of the connecting sleeve 2 through the first slide rod 10 and the first slide groove 9. At the same time, the positioning block 4 drives the annular plate 5 set on the outer side to rotate through the connecting rod 6, and the annular plate 5 also drives the other four positioning blocks 4 to be inserted into the positioning groove 12 through the connecting rod 6, and finally the docking of the two bellows main bodies 1 is completed. The user only needs to insert the connecting sleeve 2 of one bellows main body 1 into the positioning sleeve 3 of the other bellows main body 1 and then forwardly screw the bolt 11. The operation is convenient and simple.

[0036] The above shows and describes the basic principle, main features and 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 preferred examples of the utility model and are not used to limit 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 of the utility model is defined by the attached claims and their equivalents.

Claims

1. A bellows convenient for docking, comprising a bellows body (1), characterized in that: One end of the bellows body (1) is fixedly connected to a connecting sleeve (2), the other end of the bellows body (1) is fixedly connected to a positioning sleeve (3), the interior of the positioning sleeve (3) is rotatably connected to a positioning block (4), an annular plate (5) is provided inside the positioning sleeve (3) and outside the positioning block (4), a connecting rod (6) is rotatably connected between the annular plate (5) and the positioning block (4), a groove (7) is provided inside the positioning block (4), a sliding block (8) is slidably connected inside the groove (7), and the interior of the positioning block (4) is provided with a groove (7). A first slide groove (9) is provided on both corresponding side edges of the slider (8), the first slide groove (9) is slidably connected to a first slide rod (10) inside, the first slide rod (10) is fixedly connected to the slider (8), the slider (8) is rotatably connected to a bolt (11) outside, the bolt (11) passes through the positioning sleeve (3) and extends to the outside of the positioning sleeve (3), the bolt (11) is threadedly connected to the positioning sleeve (3), and a positioning groove (12) is provided on the outside of the connecting sleeve (2), and the positioning groove (12) is used in conjunction with the positioning block (4).

2. The convenient docking bellows according to claim 1, characterized in that: There are five positioning blocks (4) in total, and the five positioning blocks (4) are distributed at equal intervals.

3. The convenient docking bellows according to claim 1, characterized in that: A second sliding groove (13) is provided inside the annular plate (5) and on one side of the connecting rod (6). A second sliding rod (14) is slidably connected inside the second sliding groove (13). The second sliding rod (14) is fixedly connected to the positioning sleeve (3).

4. The convenient docking bellows according to claim 1, characterized in that: The positioning block (4) and the second sliding groove (13) are both arc-shaped structures.

5. The convenient docking bellows according to claim 1, characterized in that: A sealing ring (15) is fixedly connected to the side of the connecting sleeve (2) away from the bellows body (1), and a rubber gasket (16) is fixedly connected to the side of the positioning block (4) away from the connecting rod (6).

6. The convenient docking bellows according to claim 1, characterized in that: The cross section of the positioning groove (12) is a trapezoidal structure.

7. The convenient docking bellows according to claim 1, characterized in that: A through slot (17) is provided inside the annular plate (5), and the through slot (17) is used in conjunction with the bolt (11).

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