Pipe piece joint structure

Abstract

The utility model discloses a pipe piece joint structure which solves the problem that in the prior art, an existing quick connection structure cannot retreat and be dismantled. The segment joint structure comprises a lock box I and a lock box II, a pin rod is arranged on the lock box II, a clamping block assembly for clamping and fixing the pin rod is arranged in the lock box I, and a locking piece for locking the clamping block assembly is arranged on the lock box I. According to the joint structure, box-shaped butt joint and in-box insertion connection are adopted, the structure is simple, the connection distance between pipe pieces can be freely adjusted and controlled, and connection and disassembly can be fast. The in-box clamping block assembly and the pin rod are locked through rigid insertion and rod embedding, namely, the in-box clamping block assembly and the pin rod are connected through extrusion locking of a rigid structure, the overall rigidity of the structure is high, and the connection strength is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment connection, in particular to a pipe segment joint structure. Background Art

[0002] Domestic segment joints are usually connected by bolts, which have problems such as large hand holes and difficult positioning. The existing joints are moving towards no hand holes during the optimization process, but no hand hole joints often face problems such as being unable to be repaired, dismantled, and ensuring that the connection is in place. Therefore, the form of joints has become diverse according to needs.

[0003] Existing segment joints, such as the Chinese patent with publication number CN117211822A, proposed a quick-locking large-diameter shield segment annular joint structure and its assembly method. However, although the joint structure can meet the needs of segment connection, it cannot adjust the segment connection spacing. The Chinese patent with publication number CN115539083A proposed a ring-shaped combined shield tunnel segment annular joint connection device, which can meet the needs of segment connection and adjust the segment compression spacing, but can only adjust the spacing forward, and cannot be retreated or removed; and the rubber ring is an elastic part, and its durability poses a safety risk. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a pipe segment joint structure, which solves the problem that the existing quick-connect structure in the prior art cannot be retreated and dismantled.

[0005] The technical solution of the utility model is implemented as follows: a pipe segment joint structure includes a lock box I and a lock box II, a pin rod is provided on the lock box II, a block assembly for fixing the pin rod is provided in the lock box I, and a locking piece for locking the block assembly is provided on the lock box I.

[0006] Further preferably, a slide groove is provided in the lock box I, the block assembly is located in the slide groove, and the pin rod can be clamped under the action of the locking member; one end of the pin rod is fixed in the lock box II, and the other end extends out of the lock box II and can be inserted into the lock box I and clamped with the block assembly.

[0007] Further preferably, the top of the lock box I is provided with an embedding rod hole connected to the slide groove, and the side of the lock box I corresponding to the lock box II is provided with a locking rod hole, and the pin rod is inserted into the lock box I through the locking rod hole; the locking piece is an embedding rod, and the embedding rod is inserted into the block assembly through the embedding rod hole.

[0008] Further preferably, the clamping block assembly comprises an insert block arranged in the lock box I, the insert block is provided with a toothed ring for clamping the pin rod, and the insert block is provided with a through hole corresponding to the embedding rod hole.

[0009] Further preferably, the embedment block includes two symmetrically arranged sliding embedments, and the toothed ring is an arc-shaped toothed ring arranged on the opposite sides of the two sliding embedments; the top of the lock box I is provided with two embedding rod holes corresponding to the sliding embedments, and the embedding rod is inserted into the corresponding sliding embedments through the embedding rod holes, and the two arc-shaped toothed rings form an annular clamp structure for clamping the pin rod.

[0010] Further preferably, the sliding insert is slidably arranged in the lock box I, and the toothed rings on the two sliding inserts can move relatively under the action of the insert rod to fix the pin rod.

[0011] Further preferably, the insert includes a sliding insert and a fixed insert, the toothed ring is an arc-shaped toothed ring arranged on the opposite sides of the sliding insert and the fixed insert, and the top of the lock box I is provided with an embedding rod hole corresponding to the sliding insert, and the embedding rod is inserted into the corresponding sliding insert through the embedding rod hole, and the two arc-shaped toothed rings form an annular clamp structure for clamping the pin rod.

[0012] Further preferably, the sliding insert is slidably arranged in the lock box I, and the fixed insert is fixedly arranged in the lock box I. The toothed ring on the sliding insert can slide relative to the fixed insert under the action of the insert rod to clamp the pin rod.

[0013] Further preferably, the insert includes two symmetrically arranged split inserts, the tooth ring includes two split arc-shaped tooth rings, an arc-shaped hole I is provided on the side of the insert corresponding to the tooth ring, and an arc-shaped hole II is provided on the side of the tooth ring corresponding to the insert, and the arc-shaped hole I and the arc-shaped hole II correspond to form a through hole; two rod embedding holes corresponding to the through holes are provided on the top of the lock box I, and the embedded rod is inserted into the corresponding through holes through the rod embedding holes, and the two split arc-shaped tooth rings form an annular clamp structure for clamping the pin rod.

[0014] Further preferably, the fixing surface of the gear ring is provided with a friction increasing part I for increasing friction force, and the pin rod is provided with a friction increasing part II for cooperating with the friction increasing part I. Further preferably, the lock box I and the lock box II are respectively pre-buried in the corresponding pipe segment through anchors.

[0015] The beneficial effects of the utility model are as follows: the joint structure of the utility model adopts box-shaped docking and plug-in connection in the box, with a simple structure, the connection spacing of the pipe segments can be freely adjusted, and it can be quickly connected and disassembled. The block assembly and the pin rod in the box adopt rigid plug-in and embedded rod locking, that is, the connection is squeezed and locked by the rigid structure, and the overall rigidity of the structure is strong and the connection strength is high. The utility model realizes the connection of the pipe segments through a small aperture, which has almost no effect on the overall structure of the pipe segments, and is convenient for later maintenance of the pipe segments, and has high practicality. The utility model is an embedded locking rigid joint that can meet the requirements of adjustable pipe segment spacing and free disassembly, which solves the problem that the existing quick-connect structure cannot be disassembled and the rigidity cannot be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the state of connecting pipe segments of the pipe segment joint structure of the utility model.

[0018] Figure 2 This is a top view of the lock box I of the utility model.

[0019] Figure 3 This is a front view schematic diagram of the lock box I of the utility model.

[0020] Figure 4 It is a schematic plan view of a lock box I of the utility model.

[0021] Figure 5 It is a longitudinal section schematic diagram of the lock box I of the utility model.

[0022] Figure 6 This is a schematic cross-sectional view of the pin rod being inserted into lock box I.

[0023] Figure 7 A longitudinal section diagram of the pin rod being inserted into lock box I.

[0024] Figure 8 It is a longitudinal section schematic diagram of the insertion rod into the lock box I.

[0025] Fig. 9 This is a plan view of the completed joint structure connection.

[0026] Fig.10 This is a longitudinal section view of the completed joint structure connection.

[0027] Fig.11 This is a schematic diagram of the card block assembly in the lock box I in Example 3.

[0028] Fig.12 This is a schematic diagram of the card block assembly in the lock box I in Example 4. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figure 1As shown, in Example 1, a pipe segment joint structure includes a lock box Ⅰ1 and a lock box Ⅱ6, which are respectively arranged on two pipe segment blocks to be connected. Specifically, the lock box Ⅰ1 and the lock box Ⅱ6 are respectively pre-buried in the corresponding two pipe segments 8 through anchors 7. In this embodiment, at least one pin rod 5 is provided on the lock box Ⅱ6, and at least one group of block assemblies for clamping the pin rod 5 is provided in the lock box Ⅰ1, and at least one locking member for locking the block assembly is provided on the lock box Ⅰ1; during the actual construction process, the pin rod in the lock box Ⅱ6 is inserted into the block assembly in the lock box Ⅰ1, and then locked by the locking member to ensure the stability and rigidity of the entire joint and pipe segment connection. At the same time, the joint structure adopts the method of plug-in and clamping, which solves the problem that the existing quick-connect structure in the prior art cannot be retreated and dismantled.

[0031] In practical application, according to the segment specifications and working conditions, multiple pins can be arranged in the lock box II, and corresponding block assemblies corresponding to the pins and locking members corresponding to the block assemblies are arranged in the corresponding lock box I. In this embodiment, one pin and one set of block assemblies are taken as an example.

[0032] This embodiment is a preferred solution. Figure 2 , 3 As shown, the lock box Ⅰ1 is provided with a slide groove 1-1, that is, a hollow box body is formed, the block assembly is located in the slide groove 1-1, and the pin rod 5 can be actively clamped under the action of the locking member, the overall structure is compact, and the connection rigidity of the pipe segment is improved. One end of the pin rod 5 is fixed in the lock box Ⅱ6, and the other end extends out of the lock box Ⅱ6 and can be inserted into the lock box Ⅰ1 and clamped with the block assembly. In actual construction, the pin rod can be a threaded rod, and the lock box Ⅱ is provided with a threaded hole. The threaded cooperation between the screw rod and the threaded hole realizes the fixed connection between the pin rod and the lock box Ⅱ. The pin rod can also be fixed to the lock box Ⅱ by welding as needed.

[0033] This embodiment is a preferred solution. The top of the lock box Ⅰ1 is provided with an embedding rod hole 11 connected to the slide groove 1-1. The side of the lock box Ⅰ1 corresponding to the lock box Ⅱ6 is provided with a locking rod hole 12. In terms of the three-dimensional coordinate system, the embedding rod hole 11 is arranged along the Z-axis direction, and the locking rod hole 12 is arranged along the X-axis direction, that is, the embedding rod hole 11 and the locking rod hole 12 are arranged vertically in space, and the pin rod 5 is inserted into the lock box Ⅰ1 through the locking rod hole 12; the locking member is the embedding rod 4, and the embedding rod 4 is inserted into the block assembly through the embedding rod hole 11. When in use, the pin rod 5 is inserted into the lock box Ⅰ1 and the block assembly through the locking rod hole 12, and then the embedding rod 4 is inserted into the block assembly through the embedding rod hole 11 to lock it and the pin rod 5. Figure 4 , 5 shown.

[0034] This embodiment is a preferred solution. Figure 7 , 8As shown, the block assembly includes an insert block 3 disposed in the lock box Ⅰ1, and a toothed ring 2 for clamping the pin rod 5 is disposed on the insert block 3, and a through hole 31 corresponding to the rod-embedding hole 11 is disposed on the insert block 3. The rod-embedding hole 11 is inserted into the through hole 31, and the rod-embedding hole 11 is pressed by the rod-embedding ring to engage the pin rod. The toothed ring, the rod-embedding block are all lock box components, and a slide groove is disposed in the lock box, and an rod-embedding hole 11 is provided on one side for inserting the rod-embedding hole, and a lock rod hole 12 is provided on the side facing the pin rod for inserting the pin rod. The toothed ring moves along the groove under the pressing action of the rod-embedding hole to clamp the pin rod 5.

[0035] like Fig. 9 , 10 As shown, Example 2 is a pipe segment joint structure. This example is further optimized on the basis of Example 1: the insert 3 includes two symmetrically arranged sliding inserts 3a, and the sliding inserts 3a are slidably arranged in the slide groove in the lock box Ⅰ1. The toothed ring 2 is an arc-shaped toothed ring arranged on the opposite sides of the two sliding inserts 3a; the toothed rings 2 on the two sliding inserts 3a can move relatively under the action of the embedded rod 4, merge into a ring, and clamp the pin rod 5. Two embedded rod holes 11 corresponding to the sliding inserts 3a are provided on the top of the lock box Ⅰ1. The embedded rod 4 is inserted into the corresponding sliding insert 3a through the embedded rod holes 11. The two arc-shaped toothed rings form an annular hoop structure for clamping the pin rod 5; ensure the stability of the clamping of the pin rod 5. When the embedded rod 4 is not inserted, there is a gap between the two insert parts to facilitate the movement of the toothed ring. The embedded rod 4 is a truncated cone-shaped rod that is narrow at the bottom and wide at the top, so that the embedded rod can be inserted into the toothed ring to form a ring with the embedded block. The inner side of the embedded rod hole of the embedded block is plug-connected with the embedded rod, and the outer side is close to the inner wall of the lock box. The outer toothed ring is engaged with the pin rod.

[0036] like Fig.11 As shown, Example 3 is a pipe segment joint structure. The difference between this example and Example 2 is that the insert 3 includes a sliding insert 3a and a fixed insert 3b. The sliding insert 3a is slidably set in the slide groove in the lock box Ⅰ1, and the fixed insert 3b is fixedly set in the lock box Ⅰ1. The toothed ring 2 is an arc-shaped toothed ring set on the opposite sides of the sliding insert 3a and the fixed insert 3b. The toothed ring 2 on the sliding insert 3a can slide relative to the fixed insert 3b under the action of the embedding rod 4 to clamp the pin rod 5. The top of the lock box Ⅰ1 is provided with an embedding rod hole 11 corresponding to the sliding insert 3a. The embedding rod 4 is inserted into the corresponding sliding insert 3a through the embedding rod hole 11. The two arc-shaped toothed rings form an annular clamp structure for clamping the pin rod 5, ensuring the stability of the clamping of the pin rod 5. This example further reduces the number of openings, such as Figure 7 As shown, a hole is opened on the top of the lock box I for inserting the embedded rod. Only one toothed ring in the lock box I is squeezed and moved by the embedded rod, and the toothed ring on the sliding embedded block 3a moves to form a ring with the toothed ring on the fixed embedded block 3b to fix the pin rod.

[0037] like Fig.12As shown, Example 4 is a pipe segment joint structure. The difference between this example and Example 2 is that the insert block 3 includes two symmetrically arranged split insert blocks 3c, which are fixed on both sides of the slide groove, and the toothed ring 2 includes two split arc-shaped toothed rings, which are correspondingly arranged between the two split insert blocks 3c. The insert block 3 is provided with an arc-shaped hole I on the side corresponding to the toothed ring 2, and the toothed ring 2 is provided with an arc-shaped hole II on the side corresponding to the insert block 3. The arc-shaped hole I and the arc-shaped hole II form a through hole 31 corresponding to each other. The top of the lock box I1 is provided with two rod embedding holes 11 corresponding to the through hole 31, and the embedding rod 4 is inserted into the corresponding through hole 31 through the rod embedding holes 11. The two split arc-shaped toothed rings form an annular hoop structure for clamping the pin rod 5. There is a gap between the insert block 3 and the toothed ring 2 on the same side, which facilitates the smooth insertion of the embedding rod and can push the toothed ring 2 to move toward each other to form a clamping of the pin rod 5.

[0038] Embodiment 5, a pipe segment joint structure, further optimized on the basis of embodiment 2 or 3, the clamping surface of the gear ring 2 is provided with a friction increasing part I for increasing friction, and the pin rod 5 is provided with a friction increasing part II for cooperating with the friction increasing part I; the friction increasing part I and the friction increasing part II can adopt toothed meshing, thread overlap, friction handover and other methods to increase the friction between the gear ring 2 and the pin rod 5 and improve the connection firmness. When thread overlap is adopted, the pin rod is a threaded rod, the outer side is arranged with threads, one end is provided with a slope angle for easy insertion into the lock box, and the other end is threadedly connected with the lock box II, and the lock box II is pre-buried in the pipe segment through an anchor. When toothed meshing is adopted, the clamping part of the inner ring surface of the gear ring 2 is provided with a tooth groove, i.e., the friction increasing part I, and the pin rod is also provided with a tooth groove, i.e., the friction increasing part II. When friction handover is adopted, the friction increasing part I and the friction increasing part II can adopt a friction coating or a rubber pad and other methods to increase the friction between the two.

[0039] The utility model has a simple joint structure, can freely adjust the pipe segment connection spacing, and can be quickly connected and disassembled. Through the rigid structure extrusion locking connection, the overall rigidity of the structure is strong and the connection strength is high. The pipe segment connection is achieved through a small aperture, which has almost no effect on the overall structure of the pipe segment and is convenient for later maintenance of the pipe segment. It can meet the requirements of the embedded locking rigid joint with adjustable pipe segment spacing and free disassembly.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe segment joint structure, characterized in that: It comprises a lock box I (1) and a lock box II (6), wherein the lock box II (6) is provided with a pin rod (5), the lock box I (1) is provided with a clamping block assembly for clamping the pin rod (5), and the lock box I (1) is provided with a locking member for locking the clamping block assembly; One end of the pin rod (5) is fixed in the lock box II (6), and the other end extends out of the lock box II (6) and can be inserted into the lock box I (1) and locked with the clamping block assembly; The top of the lock box I (1) is provided with an embedding rod hole (11), the locking member is an embedding rod (4), and the embedding rod (4) is inserted into the block assembly through the embedding rod hole (11); The clamping block assembly comprises an insert block (3) arranged in a lock box I (1), and a toothed ring (2) for clamping a pin rod (5) is provided on the insert block (3).

2. The pipe segment joint structure according to claim 1, characterized in that: The lock box I (1) is provided with a slide groove (1-1), the clamping block assembly is located in the slide groove (1-1), and can clamp the pin rod (5) under the action of the locking member.

3. The pipe segment joint structure according to claim 2, characterized in that: The top of the lock box I (1) is provided with a rod embedding hole (11) which is connected to the slide groove (1-1), and the side of the lock box I (1) corresponding to the lock box II (6) is provided with a lock rod hole (12), and the pin rod (5) is inserted into the lock box I (1) through the lock rod hole (12).

4. The pipe segment joint structure according to claim 3, characterized in that: The embedded block (3) is provided with a through hole (31) corresponding to the embedded rod hole (11).

5. The pipe segment joint structure according to claim 4, characterized in that: The insert (3) comprises two symmetrically arranged sliding inserts (3a), and the toothed ring (2) is an arc-shaped toothed ring arranged on opposite sides of the two sliding inserts (3a); the top of the lock box I (1) is provided with two rod embedding holes (11) corresponding to the sliding inserts (3a), and the embedding rod (4) is inserted into the corresponding sliding insert (3a) through the rod embedding holes (11), and the two arc-shaped toothed rings form an annular clamp structure for clamping the pin rod (5).

6. The pipe segment joint structure according to claim 5, characterized in that: The sliding insert (3a) is slidably arranged in the lock box I (1); the toothed rings (2) on the two sliding inserts (3a) can move relatively under the action of the insert rod (4) to clamp the pin rod (5).

7. The pipe segment joint structure according to claim 4, characterized in that: The insert (3) comprises a sliding insert (3a) and a fixed insert (3b); the toothed ring (2) is an arc-shaped toothed ring arranged on opposite sides of the sliding insert (3a) and the fixed insert (3b); a rod embedding hole (11) corresponding to the sliding insert (3a) is arranged on the top of the lock box I (1); the rod embedding hole (11) is inserted into the corresponding sliding insert (3a) through the rod embedding hole (11); and the two arc-shaped toothed rings form an annular clamp structure for clamping the pin rod (5).

8. The pipe segment joint structure according to claim 6, characterized in that: The sliding insert (3a) is slidably arranged in the lock box I (1), and the fixed insert (3b) is fixedly arranged in the lock box I (1). The toothed ring (2) on the sliding insert (3a) can slide relative to the fixed insert (3b) under the action of the insert rod (4) to clamp the pin rod (5).

9. The pipe segment joint structure according to claim 4, characterized in that: The insert (3) comprises two symmetrically arranged split inserts (3c), the toothed ring (2) comprises two split arc-shaped toothed rings, an arc-shaped hole I is provided on one side of the insert (3) corresponding to the toothed ring (2), an arc-shaped hole II is provided on one side of the toothed ring (2) corresponding to the insert (3), and the arc-shaped hole I and the arc-shaped hole II correspond to form a through hole (31); two rod embedding holes (11) corresponding to the through hole (31) are provided on the top of the lock box I (1), the rod embedding (4) is inserted into the corresponding through hole (31) through the rod embedding holes (11), and the two split arc-shaped toothed rings form an annular clamp structure for clamping the pin rod (5).

10. The pipe segment joint structure according to claim 5, 7 or 9, characterized in that: The fixing surface of the gear ring (2) is provided with a friction increasing portion I for increasing friction force, and the pin rod (5) is provided with a friction increasing portion II for cooperating with the friction increasing portion I; the lock box I (1) and the lock box II (6) are respectively pre-buried in the corresponding pipe segment (8) through anchoring pieces (7).

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