Inner support locking type miniature jacking pipe connector fixing device

Abstract

The utility model discloses an inner support locking type miniature top pipe connector fixing device which comprises a first top connecting pipe, a butt joint piece is installed on the outer surface of one end of the first top connecting pipe in an inserted mode, and an inner support locking mechanism is arranged between the butt joint piece and a middle connecting piece. And the first top connecting pipe and the second top connecting pipe are connected and fixed through the inner support locking mechanism, so that the connection convenience and the connection stability are improved. According to the internal supporting locking type miniature jacking pipe connector fixing device, when a miniature jacking pipe is fixed and connected, a butt joint piece and an expansion internal supporting piece can be inserted into a first jacking pipe and a second jacking pipe, then an internal insertion opening sleeve can be inserted into the expansion internal supporting piece, and a middle connecting piece is rotated; and the screwing directions of threads of the internally-inserted opening sleeves are opposite, so that the expanding inner supporting pieces on the two sides can be opened at the same time, the first top connecting pipe and the second top connecting pipe are fixed at the same time, a large number of bolts do not need to be installed for fixing, and installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of micro pipe jacking, in particular to an inner support locking type fixing device for micro pipe jacking interfaces. Background Technique

[0002] Micro pipe jacking is a trenchless pipe laying construction technology with a small floor area and less environmental impact. This technology is called the secondary pipe jacking method. The diameter of the micro pipe jacking technology is very small, and people cannot enter the inside of the pipe. The diameter of the pipe is usually below 400mm, and the smallest diameter is only 75mm. Micro pipe jacking is generally buried in the shallow layer of the ground surface, and the content components of the soil layer passed through are also more. It has become a new branch of pipe jacking construction. The structures of micro pipe jacking are often fixed and connected by the connection and buckling of bolts and installation fixing rings, and multiple bolts and nuts need to be installed, which is rather troublesome to install. Content of the Utility Model

[0003] The purpose of the utility model is to provide an inner support locking type fixing device for micro pipe jacking interfaces, so as to solve the problem that a large number of bolts need to be screwed on during the installation of micro pipe jacking, which is troublesome in the above-mentioned background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an inner support locking type fixing device for micro pipe jacking interfaces, including a first jacking pipe, one end outer surface of the first jacking pipe is inserted and installed with a docking piece, and an intermediate connecting piece is attached to the side surface of the docking piece. And the side surface of the intermediate connecting piece far away from the first jacking pipe is attached with another docking piece. The outer surface of the other docking piece is inserted with a second jacking pipe. The outer surface of the docking piece is evenly provided with first anti-slip lines, and the outer surface of the intermediate connecting piece is evenly provided with second anti-slip lines. An inner support locking mechanism is arranged between the docking piece and the intermediate connecting piece. The first jacking pipe and the second jacking pipe are connected and fixed through the inner support locking mechanism, improving the convenience and stability during connection.

[0005] Preferably, the inner support locking mechanism includes: an expanding inner support piece, the expanding inner support piece is designed in a frustum shape, and the expanding inner support piece is fixedly installed on the outer surface of the docking piece far away from the intermediate connecting piece. And the outer surfaces of both ends of the intermediate connecting piece are fixedly installed with inner inserting expanding sleeves. The inner inserting expanding sleeves and the expanding inner support piece are concentrically designed, and the expanding inner support piece and the docking piece are concentrically designed. The docking piece and the inner inserting expanding sleeve are in threaded connection, and the thread directions of the inner inserting expanding sleeves are opposite. The first jacking pipe and the second jacking pipe are concentrically designed, and the inner surfaces of the second jacking pipe and the first jacking pipe are attached to the outer surface of the expanding inner support piece.

[0006] By adopting the above technical solution, the docking piece and the expanded inner support piece can be inserted into the interior of the first top tube and the second top tube respectively, and then the intermediate connecting piece and the inner inserted expansion sleeve can be inserted into the interior of the docking piece, so that the inner inserted expansion sleeve is inserted into the interior of the expanded inner support piece, and as the intermediate connecting piece rotates, the inner inserted expansion sleeve is rotated in and expands the expanded inner support piece, so that the outer surface of the expanded inner support piece is close to the outer surface of the first top tube and the second top tube, and in conjunction with the opposite direction of the thread of the inner inserted expansion sleeve, the first top tube and the second top tube can be connected and fixed at the same time, thereby improving the convenience of installation.

[0007] Preferably, a sealing gasket is provided between the docking piece and the expanded inner support piece, and the sealing gasket and the expanded inner support piece are concentrically designed, the side surface of the first top pipe is in contact with the outer surface of the sealing gasket, and the outer surface of the sealing gasket is in contact with the outer surface of the second top pipe.

[0008] By adopting the above technical solution, the butt joint piece can be inserted into the interior of the first top pipe and the second top pipe through the sealing gasket to seal them, thereby reducing the probability of leakage and water ingress of the first top pipe and the second top pipe.

[0009] Preferably, a snap-fitting mechanism is provided between the first top tube, the second top tube and the expanded inner support piece, so that the docking piece will not move arbitrarily after being inserted into the first top tube and the second top tube.

[0010] By adopting the above technical solution, after the docking piece and the expanded inner support piece are inserted into the interior of the first top tube and the second top tube, the anti-slip buckle protrusion block and the concave anti-slip buckle pattern will be engaged, so that the inserted expanded sleeve will not be separated from the first top tube and the second top tube when inserted and tightened.

[0011] Preferably, the snap-fitting mechanism includes: an anti-slip snap-fitting protrusion block, which is fixedly arranged on the outer surface of the expanded inner support piece, and the expanded inner support piece and the anti-slip snap-fitting protrusion block are concentrically designed, and the interior of the first top pipe and the second top pipe are provided with concave anti-slip snap-fitting lines, and the concave anti-slip snap-fitting lines are engaged with the expanded inner support piece, the thickness of the expanded inner support piece away from the middle connecting piece is greater than the height of the other side, and the inner surface of the expanded inner support piece is in contact with the outer surface of one end of the inserted expansion sleeve.

[0012] By adopting the above technical solution, as the inserted expansion sleeve is tightened, the expanded inner support sheet will be expanded, and due to the thickness, the anti-slip buckle protrusion block will be completely stuck into the interior of the concave anti-slip buckle pattern, thereby improving the tensile resistance of the first top tube and the second top tube, making it difficult for the first top tube and the second top tube to separate from the expanded inner support sheet.

[0013] Preferably, an elastic plug-in mechanism is provided between the butt joint piece and the middle connecting piece, and the elastic plug-in mechanism prevents the first top pipe and the second top pipe from rotating and opening and separating after being connected.

[0014] By adopting the above technical solution, after the butt joint piece and the middle connecting piece are tightened, the butt joint piece and the middle connecting piece will not be easily disengaged, thereby reducing the probability of the micro-jacking pipe being separated and disengaged due to loosening and self-rotation.

[0015] Preferably, the elastic plug-in mechanism includes: a pin, which is slidably mounted on the outer surface of the docking piece, and a spring is provided between the docking piece and the pin, the outer surface of one end of the docking piece is penetrated by the pin, and the end of the pin close to the middle connecting piece is inclined, and slots are evenly provided on the outer surfaces of both ends of the middle connecting piece, and the slots are engaged with the pin.

[0016] By adopting the above technical solution, as the intermediate connecting piece rotates, the slot will rotate with the intermediate connecting piece, so that the slot pushes the pin to slide inside the docking piece. When the docking piece and the intermediate connecting piece are tightened, the pin will be pushed into the slot by the spring, so that the docking piece and the intermediate connecting piece are fixed to each other, preventing the micro-top tubes from detaching.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the internal support locking type micro jacking pipe interface fixing device:

[0018] 1. When fixing and connecting the micro-jacking pipe, the docking piece and the expansion inner support piece can be inserted into the first jacking pipe and the second jacking pipe. Then, the internal expansion sleeve can be inserted into the internal expansion inner support piece, and the middle connecting piece can be rotated. The threads of the internal expansion sleeve are rotated in opposite directions, so that the expansion inner support pieces on both sides can be expanded at the same time, and the first jacking pipe and the second jacking pipe can be fixed at the same time without the need to install a large number of bolts for fixing, making installation more convenient;

[0019] 2. During installation, after the expanded inner support sheet is inserted into the interior of the first and second jacking tubes, the anti-slip buckle protrusions will be inserted into the interior of the concave anti-slip buckle grooves. Due to the thickness of the expanded inner support sheet, when the inserted expansion sleeve is inserted into the expanded inner support sheet and rotated, the anti-slip buckle protrusions will engage with the concave anti-slip buckle grooves. When the docking piece and the middle connecting piece rotate, the first and second jacking tubes can be pulled closer together without loosening, and the connection between the first and second jacking tubes and the expanded inner support sheet can be improved.

[0020] 3. As the docking piece and the middle connecting piece rotate, the slot will rotate along with it, and as the slot moves, it will push the pin to slide inside the docking piece, so that the middle connecting piece can only rotate in one direction. As the docking piece and the middle connecting piece are tightened, the spring will push the pin to reset, so that the pin and the slot are engaged, so that the docking piece and the middle connecting piece cannot rotate after being fixed, eliminating the chance of the docking piece and the middle connecting piece loosening, which may cause the first top pipe and the second top pipe to disengage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the first top pipe and the docking piece of the utility model;

[0022] Figure 2 This is a schematic diagram of the sectional three-dimensional structure of the first top pipe and the concave anti-slip buckle pattern of the utility model;

[0023] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the butt joint piece and the sealing gasket of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional three-dimensional structure of the docking piece and the expanded inner supporting piece of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the intermediate connecting piece and the slot of the utility model;

[0026] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the internally inserted expansion sleeve and the second top pipe of the present invention.

[0027] In the figure: 1. First top pipe; 2. Docking piece; 3. Expanding inner support piece; 4. Anti-slip buckle protrusion; 5. Sealing gasket; 6. Inward concave anti-slip buckle pattern; 7. Middle connecting piece; 8. Inwardly inserted expanding sleeve; 9. First anti-slip pattern; 10. Second anti-slip pattern; 11. Pin; 12. Spring; 13. Slot; 14. Second top pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-6, the utility model provides a technical solution: an inner support locking type micro jacking pipe interface fixing device, which includes a first jacking pipe 1. A docking piece 2 is inserted and installed on the outer surface of one end of the first jacking pipe 1, and an intermediate connecting piece 7 is attached to the side surface of the docking piece 2. And on the side surface of the end of the intermediate connecting piece 7 away from the first jacking pipe 1, another docking piece 2 is attached. A second jacking pipe 14 is inserted into the outer surface of the other docking piece 2. The outer surface of the docking piece 2 is uniformly provided with first anti-slip lines 9, and the outer surface of the intermediate connecting piece 7 is uniformly provided with second anti-slip lines 10. An inner support locking mechanism is arranged between the docking piece 2 and the intermediate connecting piece 7. Through the inner support locking mechanism, the first jacking pipe 1 and the second jacking pipe 14 are connected and fixed, improving the convenience and stability during connection.

[0030] Through the first anti-slip lines 9 and the second anti-slip lines 10, it is convenient to twist the docking piece 2 and the intermediate connecting piece 7, so that the intermediate connecting piece 7 can rotate and be tightened.

[0031] The inner support locking mechanism includes: an expanding inner support piece 3. The expanding inner support piece 3 is designed in a frustum shape, and the expanding inner support piece 3 is fixedly installed on the outer surface of the end of the docking piece 2 away from the intermediate connecting piece 7. And on the outer surfaces of both ends of the intermediate connecting piece 7, inner inserting and expanding sleeves 8 are fixedly installed. The inner inserting and expanding sleeves 8 and the expanding inner support piece 3 are concentrically designed, and the expanding inner support piece 3 and the docking piece 2 are concentrically designed. The docking piece 2 and the inner inserting and expanding sleeves 8 are threadedly connected, and the thread directions of the inner inserting and expanding sleeves 8 are opposite. The first jacking pipe 1 and the second jacking pipe 14 are concentrically designed, and the inner surfaces of the second jacking pipe 14 and the first jacking pipe 1 are in contact with the outer surface of the expanding inner support piece 3.

[0032] When connecting the first jacking pipe 1 and the second jacking pipe 14, it is necessary to first insert the docking piece 2 into the interiors of the first jacking pipe 1 and the second jacking pipe 14, so that the outer surface of the expanding inner support piece 3 is in contact with the inner surfaces of the first jacking pipe 1 and the second jacking pipe 14. Then, the inner inserting and expanding sleeves 8 can be inserted and the intermediate connecting piece 7 can be rotated to screw the inner inserting and expanding sleeves 8 into and expand the expanding inner support piece 3, and due to the opposite thread directions of the inner inserting and expanding sleeves 8, the first jacking pipe 1 and the second jacking pipe 14 can be fixed simultaneously, improving the stability and convenience during connection.

[0033] A sealing gasket 5 is arranged between the docking piece 2 and the expanding inner support piece 3, and the sealing gasket 5 and the expanding inner support piece 3 are concentrically designed. The side surface of the first jacking pipe 1 is in contact with the outer surface of the sealing gasket 5, and the outer surface of the sealing gasket 5 is in contact with the outer surface of the second jacking pipe 14.

[0034] Through the contact of the sealing gasket 5 with the first jacking pipe 1 and the second jacking pipe 14, the outside and inside of the micro jacking pipe are not interconnected, reducing the probability of solution leakage and entry.

[0035] A snap-fitting mechanism is provided between the first top tube 1, the second top tube 14 and the expanded inner support piece 3. The snap-fitting mechanism prevents the docking piece 2 from moving arbitrarily after being inserted into the first top tube 1 and the second top tube 14. The snap-fitting mechanism includes: an anti-slip snap-fitting protrusion 4, the anti-slip snap-fitting protrusion 4 is fixedly provided on the outer surface of the expanded inner support piece 3, and the expanded inner support piece 3 and the anti-slip snap-fitting protrusion 4 are concentrically designed. The interior of the first top tube 1 and the second top tube 14 is provided with a concave anti-slip snap-fitting pattern 6, and the concave anti-slip snap-fitting pattern 6 is engaged with the expanded inner support piece 3. The thickness of the expanded inner support piece 3 away from the middle connecting piece 7 is greater than the height of the other side, and the inner surface of the expanded inner support piece 3 is in contact with the outer surface of one end of the inserted expansion sleeve 8.

[0036] During installation, after the expanded inner support sheet 3 is inserted into the interior of the first top tube 1 and the second top tube 14, the anti-slip buckle protrusion 4 on the outer surface of the expanded inner support sheet 3 will be inserted into the interior of the concave anti-slip buckle pattern 6, and as the inserted expansion sleeve 8 is screwed into the expanded inner support sheet 3, the anti-slip buckle protrusion 4 is completely stuck in the interior of the concave anti-slip buckle pattern 6, thereby improving the tensile strength of the first top tube 1 and the second top tube 14 after the connection is fixed.

[0037] An elastic plug-in mechanism is provided between the docking piece 2 and the intermediate connecting piece 7. The elastic plug-in mechanism prevents the first top pipe 1 and the second top pipe 14 from rotating and opening and separating after being connected. The elastic plug-in mechanism includes: a latch 11, which is slidably mounted on the outer surface of the docking piece 2, and a spring 12 is provided between the docking piece 2 and the latch 11. The outer surface of one end of the docking piece 2 is penetrated by the latch 11, and the end of the latch 11 close to the intermediate connecting piece 7 is inclined. Slots 13 are evenly provided on the outer surfaces of both ends of the intermediate connecting piece 7, and the slots 13 are engaged with the latch 11.

[0038] As the middle connecting piece 7 is twisted, the docking piece 2 will gradually move closer to the middle connecting piece 7, causing the slot 13 to rotate along with it. As the slot 13 rotates, it will push the pin 11 to move, causing the pin 11 to slide inside the docking piece 2, allowing the middle connecting piece 7 to rotate in one direction but not in the opposite direction. After tightening and fixing, the spring 12 will push the pin 11 back, allowing the pin 11 and the slot 13 to engage with each other, so that the docking piece 2 and the middle connecting piece 7 will not loosen after long-term use, and the first top pipe 1 and the second top pipe 14 will not detach.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner support locking type micro pipe jacking interface fixing device, comprising a first pipe jacking pipe (1), wherein a docking piece (2) is inserted and installed on the outer surface of one end of the first pipe jacking pipe (1), and an intermediate connecting piece (7) is attached to the side surface of the docking piece (2), and another docking piece (2) is attached to the side surface of the end of the intermediate connecting piece (7) away from the first pipe jacking pipe (1), and a second pipe jacking pipe (14) is inserted into the outer surface of the other docking piece (2), the outer surface of the docking piece (2) is uniformly provided with first anti-slip lines (9), and the outer surface of the intermediate connecting piece (7) is uniformly provided with second anti-slip lines (10), and it is characterized in that: An internal support locking mechanism is provided between the docking piece (2) and the middle connecting piece (7), and the first top pipe (1) and the second top pipe (14) are connected and fixed by the internal support locking mechanism, thereby improving the convenience and stability of the connection.

2. The internal support locking type micro pipe jacking interface fixing device according to claim 1, characterized in that: The inner support locking mechanism comprises: an expanded inner support piece (3), the expanded inner support piece (3) is of a cone-shaped design, and the expanded inner support piece (3) is fixedly mounted on the outer surface of one end of the docking piece (2) away from the middle connecting piece (7), and an inner insert expansion sleeve (8) is fixedly mounted on the outer surfaces of both ends of the middle connecting piece (7), the inner insert expansion sleeve (8) and the expanded inner support piece (3) are of a concentric design, and the expanded inner support piece (3) and the docking piece (2) are of a concentric design, the docking piece (2) and the inner insert expansion sleeve (8) are threadedly connected, and the thread rotation direction of the inner insert expansion sleeve (8) is opposite, the first top pipe (1) and the second top pipe (14) are of a concentric design, and the inner surface of the second top pipe (14) and the first top pipe (1) are in contact with the outer surface of the expanded inner support piece (3).

3. The internal support locking type micro-jacked pipe interface fixing device according to claim 1, characterized in that: A sealing gasket (5) is provided between the docking piece (2) and the expanded inner support piece (3), and the sealing gasket (5) and the expanded inner support piece (3) are concentrically designed. The side surface of the first top pipe (1) is in contact with the outer surface of the sealing gasket (5), and the outer surface of the sealing gasket (5) is in contact with the outer surface of the second top pipe (14).

4. The internal support locking type micro pipe jacking interface fixing device according to claim 1, characterized in that: A snap-fitting mechanism is provided between the first top tube (1), the second top tube (14) and the expanded inner support sheet (3), and the snap-fitting mechanism prevents the docking sheet (2) from moving arbitrarily after being inserted into the first top tube (1) and the second top tube (14).

5. The inner support locking type micro-jacked pipe interface fixing device according to claim 4, characterized in that: The snap-fit plug-in mechanism comprises: an anti-slip snap-fit protrusion (4), the anti-slip snap-fit protrusion (4) is fixedly arranged on the outer surface of the expanded inner support piece (3), and the expanded inner support piece (3) and the anti-slip snap-fit protrusion (4) are concentrically designed, the first top tube (1) and the second top tube (14) are provided with concave anti-slip snap-fit lines (6) inside, and the concave anti-slip snap-fit lines (6) are engaged with the expanded inner support piece (3), the thickness of one end of the expanded inner support piece (3) away from the middle connecting piece (7) is greater than the height of the other side, and the inner surface of the expanded inner support piece (3) is in contact with the outer surface of one end of the inserted expansion sleeve (8).

6. The internal support locking type micro pipe jacking interface fixing device according to claim 1, characterized in that: An elastic plug-in mechanism is provided between the docking piece (2) and the middle connecting piece (7), and the elastic plug-in mechanism prevents the first top pipe (1) and the second top pipe (14) from rotating and opening and separating after being connected.

7. The inner support locking type micro pipe jacking interface fixing device according to claim 6, characterized in that: The elastic plug-in mechanism comprises: a latch (11), the latch (11) being slidably mounted on the outer surface of the docking piece (2), and a spring (12) being provided between the docking piece (2) and the latch (11), the outer surface of one end of the docking piece (2) being penetrated by the latch (11), and the end of the latch (11) close to the middle connecting piece (7) being inclined, and slots (13) being evenly provided on the outer surfaces of both ends of the middle connecting piece (7), and the slots (13) being engaged with the latch (11).

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