Flexible butt joint structure for reinforced concrete tongue-and-groove pipes

Abstract

The utility model discloses a reinforced concrete tongue-and-groove pipe flexible butt joint structure which comprises a first tongue-and-groove pipe and a second tongue-and-groove pipe which are in butt joint through a butt joint mechanism. The first tongue-and-groove pipe comprises a tongue-and-groove part, a plurality of circles of stepped grooves are formed in the tongue-and-groove part, the second tongue-and-groove pipe is provided with a tenon part, a plurality of circles of second stepped grooves are formed in the outer wall of the tenon part, the second stepped grooves are sleeved with first sealing rings, and the tenon part is inserted into the tongue-and-groove part and then fixedly connected through bolts to achieve butt joint. Meanwhile, the first sealing ring is blocked between multiple steps of the stepped groove and the second stepped groove through elastic extrusion; after relative movement of the connecting pipeline occurs, the positioning block can only move in the annular groove, approaching or leaving of the stepped groove and the second stepped groove is limited, and the situation that the sealing effect is lost due to the fact that a large gap is formed is avoided; and the two first sealing rings are deformed, extruded and sealed among the inner and outer stepped grooves to form multiple sealing, so that a high sealing effect can still be achieved after the connecting pipeline moves relatively.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete tongue and groove pipe construction, and particularly relates to a flexible butt joint structure for reinforced concrete tongue and groove pipes. Background Art

[0002] Reinforced concrete tongue-and-groove pipes are primarily used to connect and seal different sections of a cement piping system, ensuring continuity and tightness. Through the tenon-and-groove joint, straight sections, elbows, and branches of the pipe are tightly connected to form a complete piping system.

[0003] Current tongue-and-groove pipe connections generally only feature simple flexible docking, with elastic materials such as rubber rings used as sealing elements between the tenon and the mortise. These rings, through their own elastic force, adapt to gaps caused by uneven settlement and deformation of the foundation, ensuring that they continue to seal even after relative movement.

[0004] However, the above-mentioned simple flexible docking structure has no restrictions on the range of movement of the two connected pipes, which can easily lead to a large gap that loses the sealing effect; at the same time, the elastic rubber ring is only simply squeezed between the tenon and the mortise to form a seal, which can easily lead to insufficient sealing contact after the connected pipes move relative to each other, affecting the sealing effect. Utility Model Content

[0005] The utility model provides a flexible butt joint structure for reinforced concrete tongue-and-groove pipes. After the connecting pipes move relative to each other, the positioning block can only move within the annular groove, restricting the step groove and the second step groove from approaching or moving away, thereby avoiding the formation of a large gap and losing the sealing effect; the two circles of first sealing rings are deformed and squeezed to seal between the inner and outer multiple step grooves, forming multiple seals, which can still achieve a high sealing effect after the connecting pipes move relative to each other, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flexible docking structure of reinforced concrete tongue and groove pipes, comprising a first tongue and groove pipe and a second tongue and groove pipe, the first tongue and groove pipe and the second tongue and groove pipe being docked through a docking mechanism; the first tongue and groove pipe comprises a mortise and tenon portion, the mortise and tenon portion is provided with a slope surface, and a plurality of stepped grooves are provided along the slope surface; the second tongue and groove pipe is provided with a tenon head portion inserted into the mortise and tenon portion, the outer wall of the tenon head portion is provided with a plurality of second stepped grooves corresponding to the stepped grooves, and a first sealing ring is sleeved on the second stepped groove; after the tenon head portion is inserted into the mortise and tenon portion, the first tongue and groove pipe and the second tongue and groove pipe are docked by fixing the connection through bolts, and at the same time, the first sealing ring is elastically extruded and sealed between the stepped groove and the multiple steps of the second stepped groove.

[0007] Preferably, the first tongue-and-groove tube is further provided with an annular groove in the mortise and tenon portion, and the outer head end of the tenon portion is provided with a plurality of retractable locking mechanisms, the head end diameter of the tenon portion is smaller than the minimum diameter of the second stepped groove, and the locking mechanism is locked in the annular groove when the first tongue-and-groove tube is docked with the second tongue-and-groove tube.

[0008] Preferably, the locking mechanism includes four grooves equally divided around the center of the tube at the head end of the tenon head, and positioning springs are fixedly installed in the grooves. The top end of the positioning spring is fixedly connected to a positioning block with the bottom end located in the groove. When the first tongue-and-groove tube and the second tongue-and-groove tube are docked, the positioning block is pushed into the annular groove through the head end of the positioning spring.

[0009] Preferably, the width of the annular groove is greater than the width of the positioning block.

[0010] Preferably, a transition slope is provided between the annular groove and the stepped groove.

[0011] Preferably, the mortise portion and the tenon head portion are both provided with a second annular groove located outside the stepped groove at the connection portion, and a second sealing ring is clamped in the second annular groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. After the connecting pipes move relative to each other, the positioning block can only move in the annular groove, restricting the approach or distance between the step groove and the second step groove to avoid the formation of a large gap and loss of sealing effect.

[0014] 2. When the stepped groove and the second stepped groove are close to or away from each other, the two circles of the first sealing ring are deformed and squeezed to seal between the multiple stepped grooves inside and outside, forming multiple seals, which can still achieve a high sealing effect after the connected pipes move relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0017] Figure 3 This is a schematic diagram of the separation structure of the first tongue-and-groove tube and the second tongue-and-groove tube of the utility model;

[0018] Figure 4 This is a side structural schematic diagram of the second tongue-and-groove tube of the present invention.

[0019] In the figure: 1. First tongue-and-groove tube; 2. Second tongue-and-groove tube; 3. Tenon portion; 4. Step groove; 5. Tenon portion; 6. Second step groove; 7. First sealing ring; 8. Annular groove; 9. Positioning spring; 10. Positioning block; 11. Transition slope; 12. Second annular groove; 13. Second sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a reinforced concrete tongue and groove pipe flexible docking structure, comprising a first tongue and groove pipe 1 and a second tongue and groove pipe 2, wherein the first tongue and groove pipe 1 and the second tongue and groove pipe 2 are docked with each other through a docking mechanism; the first tongue and groove pipe 1 comprises a tongue and groove portion 3, a slope surface is provided in the tongue and groove portion 3, and a plurality of stepped grooves 4 are opened along the slope surface in a stepped shape; the second tongue and groove pipe 2 is provided with a tenon head 5 inserted into the tongue and groove portion 3, and the outer wall of the tenon head 5 is provided with a plurality of second stepped grooves 6 corresponding to the stepped grooves 4, and a first sealing ring 7 is sleeved on the second stepped groove 6, and after the tenon head 5 is inserted into the tongue and groove portion 3, the first tongue and groove pipe 1 and the second tongue and groove pipe 2 are docked with each other through a fixed connection by bolts, and at the same time, the first sealing ring 7 is elastically squeezed and sealed between the stepped groove 4 and the plurality of steps of the second stepped groove 6; during installation, Two circles of first sealing rings 7 are put on the groove 6. The first sealing rings 7 are made of wear-resistant silicone material with good elastic deformation effect. Then, the mortise and tenon part 3 of the first tongue and groove tube 1 is aligned with the mortise head 5 of the second tongue and groove tube 2 through an external lifting tool. Then, the mortise head 5 of the second tongue and groove tube 2 is lifted and installed into the mortise and tenon part 3 of the first tongue and groove tube 1. As the stepped groove 4 and the second stepped groove 6 approach, the two circles of first sealing rings 7 are continuously squeezed to cause them to deform and stretch along the slope direction of multiple grooves, thereby squeezing and sealing between the inner and outer multiple step grooves to form multiple seals. Then, bolts are installed to fix them. When the foundation movement is inevitable and the bolts are loosened to cause the connecting pipes to move relative to each other, when the stepped groove 4 and the second stepped groove 6 approach or move away, the two circles of first sealing rings 7 are deformed, squeezed and sealed between the inner and outer multiple step grooves to form multiple seals, which can still achieve a high sealing effect after the connecting pipes move relative to each other.

[0022] Specifically, the first tongue-and-groove tube 1 is further provided with an annular groove 8 in the mortise and tenon portion 3, and the outer head end of the tenon portion 5 is provided with a plurality of retractable locking mechanisms. The head end diameter of the tenon portion 5 is smaller than the minimum diameter of the second stepped groove 6, and the locking mechanism is locked in the annular groove 8 when the first tongue-and-groove tube 1 and the second tongue-and-groove tube 2 are docked. In this embodiment, when unavoidable foundation movement or loosening of bolts causes relative movement of the connecting pipes, the locking mechanism restricts the step groove 4 and the second step groove 6 from approaching or moving away, thereby avoiding the formation of a larger gap and losing the sealing effect.

[0023] Specifically, the locking mechanism includes four grooves equally divided around the center of the tube at the head end of the tenon portion 5, and a positioning spring 9 is fixed in each of the grooves. The top end of the positioning spring 9 is fixedly connected to a positioning block 10 with the bottom end located in the groove. When the first tongue-and-groove tube 1 and the second tongue-and-groove tube 2 are docked, the positioning block 10 is pushed into the annular groove 8 through the head end of the positioning spring 9; in this embodiment, positioning springs 9 and positioning blocks 10 are fixed in the grooves in four directions of the head end of the tenon portion 5, and the connection method of the positioning spring 9 and the groove and the positioning block 10 can be selected by welding and entering the annular groove 8. After the positioning block 10 fully enters the annular groove 8, the head end is pushed into the annular groove 8 under the action of the positioning spring 9, thereby preventing the first tongue-and-groove tube 1 and the second tongue-and-groove tube 2 from loosening.

[0024] Specifically, the width of the annular groove 8 is greater than the width of the positioning block 10; in this embodiment, when unavoidable foundation movement or loosening of the bolts causes relative movement of the connecting pipes, the positioning block 10 can move in the annular groove 8 and restrict the approach or distance of the stepped groove 4 and the second stepped groove 6.

[0025] Specifically, a transition slope 11 is provided between the annular groove 8 and the stepped groove 4; in this embodiment, after the positioning block 10 approaches the transition slope 11, it is continuously squeezed by its annular slope surface, and then the positioning block 10 squeezes the positioning spring 9 to expand and contract into the groove, and then enters the annular groove 8.

[0026] Specifically, the mortise portion 3 and the tenon portion 5 are both provided with a second annular groove 12 located outside the stepped groove 4 at the connection point, and a second sealing ring 13 is clamped in the second annular groove 12; in this embodiment, the second sealing ring 13 is squeezed between the two second annular grooves 12 to form a seal, further improving the sealing effect.

[0027] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0028] Working principle: During installation, two circles of the first sealing ring 7 are put on the second stepped groove 6. The first sealing ring 7 is made of wear-resistant silicone material with good elastic deformation effect. Positioning springs 9 and positioning blocks 10 are fixed in the grooves on the four directions of the head end of the tenon 5. The connection method of the positioning spring 9 and the groove and the positioning block 10 can be selected by welding; the second sealing ring 13 is installed in the second annular groove 12, and then the tenon 3 of the first tongue and groove tube 1 is aligned with the tenon 5 of the second tongue and groove tube 2 through an external lifting tool, and then the tenon 5 of the second tongue and groove tube 2 is lifted and installed in the tenon 3 of the first tongue and groove tube 1. As the stepped groove 4 and the second stepped groove 6 approach, the two circles of the first sealing ring 7 are continuously squeezed to cause them to deform and stretch along the slope direction of multiple grooves, thereby squeezing and sealing between the inner and outer multiple stepped grooves to form multiple seals; at the same time, after the positioning block 10 is close to the transition slope 11, it is surrounded by the positioning block 10. The shaped slope surface continues to squeeze, and then the positioning block 10 squeezes the positioning spring 9 to expand and contract in the groove, and then enters the annular groove 8. After the positioning block 10 fully enters the annular groove 8, the head end is pushed into the annular groove 8 under the action of the positioning spring 9, thereby preventing the first tongue and groove tube 1 and the second tongue and groove tube 2 from loosening; at the same time, the second sealing ring 13 is squeezed between the two second annular grooves 12 to form a seal, and then the bolts are installed to fix it; after the inevitable foundation movement and the loosening of the bolts cause the connecting pipes to move relative to each other, the positioning block 10 can only move in the annular groove 8, restricting the approach or distance of the step groove 4 and the second step groove 6, to avoid the formation of a large gap and losing the sealing effect; at the same time, when the step groove 4 and the second step groove 6 approach or move away, the two circles of the first sealing ring 7 are deformed and squeezed to seal between the inner and outer multiple step grooves, forming multiple seals, which can still achieve a high sealing effect after the connecting pipes move relative to each other.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reinforced concrete tongue-and-groove pipe flexible docking structure, comprising a first tongue-and-groove pipe (1) and a second tongue-and-groove pipe (2), characterized in that: The first tongue-and-groove tube (1) and the second tongue-and-groove tube (2) are butted together through a butt joint mechanism; the first tongue-and-groove tube (1) comprises a tongue-and-groove portion (3), wherein a slope surface is provided in the tongue-and-groove portion (3), and a plurality of stepped grooves (4) are provided along the slope surface; the second tongue-and-groove tube (2) is provided with a tenon portion (5) inserted into the tongue-and-groove portion (3), and the outer wall of the tenon portion (5) is provided with a plurality of second stepped grooves (6) corresponding to the stepped grooves (4), and a first sealing ring (7) is sleeved on the second stepped grooves (6); after the tenon portion (5) is inserted into the tongue-and-groove portion (3), the first tongue-and-groove tube (1) and the second tongue-and-groove tube (2) are butt-jointed by bolts, and at the same time, the first sealing ring (7) is elastically squeezed and sealed between the stepped grooves (4) and the plurality of steps of the second stepped grooves (6).

2. A reinforced concrete tongue-and-groove pipe flexible butt joint structure according to claim 1, characterized in that: The first tongue-and-groove tube (1) is further provided with an annular groove (8) in the tongue-and-groove portion (3); a plurality of retractable locking mechanisms are provided at the outer head end of the tenon portion (5); the head end diameter of the tenon portion (5) is smaller than the minimum diameter of the second stepped groove (6); and the locking mechanisms are locked in the annular groove (8) when the first tongue-and-groove tube (1) and the second tongue-and-groove tube (2) are docked.

3. A reinforced concrete tongue-and-groove pipe flexible butt joint structure according to claim 2, characterized in that: The locking mechanism comprises four grooves equally spaced around the center of the tube at the head end of the tenon portion (5), wherein a positioning spring (9) is fixedly installed in each of the grooves, and the top end of the positioning spring (9) is fixedly connected to a positioning block (10) with the bottom end located in the groove. When the first tongue-and-groove tube (1) and the second tongue-and-groove tube (2) are docked, the positioning block (10) is pressed into the annular groove (8) via the head end of the positioning spring (9).

4. A reinforced concrete tongue-and-groove pipe flexible butt joint structure according to claim 3, characterized in that: The width of the annular groove (8) is greater than the width of the positioning block (10).

5. A reinforced concrete tongue-and-groove pipe flexible butt joint structure according to claim 4, characterized in that: A transition slope (11) is provided between the annular groove (8) and the stepped groove (4).

6. The reinforced concrete tongue-and-groove pipe flexible butt joint structure according to claim 1, characterized in that: The mortise portion (3) and the tenon portion (5) are both provided with a second annular groove (12) located outside the stepped groove (4) at the connection portion, and a second sealing ring (13) is clamped in the second annular groove (12).

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