CN113833914A

CN113833914A - Reinforced concrete tongue-and-groove pipe joint

Info

Publication number: CN113833914A
Application number: CN202111112696.3A
Authority: CN
Inventors: 韩瑞祥; 范瑞; 马建宝; 董科江; 陶禹州; 邓二文
Original assignee: PowerChina Roadbridge Group Co Ltd
Current assignee: PowerChina Roadbridge Group Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2021-12-24
Anticipated expiration: 2041-09-23
Also published as: CN113833914B

Abstract

The invention is suitable for a reinforced concrete pipe and provides a reinforced concrete tongue-and-groove pipe joint; the rabbet pipe joint comprises a first pipe body and a second pipe body which are oppositely arranged, a tenon is arranged at one end of the first pipe body, a mortise is arranged at one side, opposite to the first pipe body, of the second pipe body, a first connecting structure axially parallel to the first pipe body is arranged on the tenon, a second connecting structure axially parallel to the second pipe body is arranged on the mortise, and the tenon of the first pipe body is connected with the mortise of the second pipe body in a sealing mode through the combination of the first connecting structure and the second connecting structure. On the basis of the matching of the tenon and the mortise in the traditional mode, the invention further arranges the first connecting structure and the second connecting structure which are parallel to the axial direction of the pipe body on the tenon and the mortise of the two concrete pipes, thereby realizing the axial sealing connection of the two pipe bodies.

Description

Reinforced concrete tongue-and-groove pipe joint

Technical Field

The invention relates to a reinforced concrete pipe, in particular to a reinforced concrete tongue-and-groove pipe joint.

Background

The reinforced concrete pipe is widely applied to a plurality of fields such as agricultural irrigation, chemical engineering, gas, mines and the like, and is used for conveying fluids such as water, oil, gas and the like. The common reinforced concrete pipes can be divided into plain pipes, socket pipes, rabbet pipes and the like according to the types of the joints. The rabbet pipe is a pipeline which is connected by adopting a mode that a pipe end tenon is in jogged joint with a groove at the pipe end of another pipe.

For example, patent CN213393975U discloses a reinforced concrete rabbet pipe for preventing water leakage of a joint, which comprises a pipe body, a tenon arranged at one end of the pipe body, a mortise arranged at the other end of the pipe body, a first annular groove for arranging a gasket and a strip-shaped groove for arranging the gasket, wherein one end of the strip-shaped groove is located at the end part, and the other end of the strip-shaped groove is communicated with the first annular groove; and a T-shaped groove corresponding to the first annular groove and used for arranging a gasket is arranged on the pipe body at the bottom of the mortise.

Although the rabbet pipe can transfer the load between the pipe fittings in a mode of matching the rabbet with the mortise, and a sliding rubber ring is adopted for sealing and stopping water, the problems that the connection strength is insufficient, the sealing rubber ring is easy to age, and the actual sealing effect is general exist.

Disclosure of Invention

In order to solve at least some of the above technical problems, the present invention provides a reinforced concrete tongue-and-groove pipe joint, where the tongue-and-groove pipe joint includes a first pipe body and a second pipe body that are arranged oppositely, a tenon is arranged at one end of the first pipe body, a mortise is arranged at one side of the second pipe body opposite to the first pipe body, a first connecting structure axially parallel to the first pipe body is arranged on the tenon, a second connecting structure axially parallel to the second pipe body is arranged on the mortise, and the tenon of the first pipe body and the mortise of the second pipe body are connected in a sealing manner by combining the first connecting structure and the second connecting structure.

Furthermore, anchor rods are pre-embedded in the first pipe body and the second pipe body, a first connecting hole axially parallel to the first pipe body is formed in the tenon, and a second connecting hole axially parallel to the second pipe body is formed in the mortise; the first connecting structure comprises a first sleeve, the first sleeve is accommodated in the first connecting hole, and the first sleeve is fixedly connected with an anchor rod in the first pipe body; the second connecting structure comprises a second sleeve and a connecting rod, the second sleeve is accommodated in the second connecting hole, and the second sleeve is fixedly connected with the anchor rod in the second pipe body; one end of the connecting rod is in threaded connection with the first sleeve, and the other end of the connecting rod is in flexible connection with the second sleeve.

Further, the second connecting structure further comprises a first elastic body, one end of the first elastic body is fixed on the inner wall of the second sleeve, and the other end of the first elastic body abuts against the connecting rod.

Further, the second connecting structure further comprises a stop ring, the stop ring is in threaded connection with the inner wall of the second sleeve, and the inner diameter of the stop ring is larger than the outer diameter of the connecting rod; one end of the connecting rod, which is abutted against the first elastic body, is provided with an abutting head, and the other end of the connecting rod penetrates through the stop ring to be connected with the second sleeve.

Further, the inner diameter of the second sleeve is larger than that of the first sleeve, and the outer diameter of the abutting head is between the outer diameter of the first elastic body and the inner diameter of the stop ring.

Furthermore, an annular second elastic body and an annular third elastic body are arranged between the tenon and the mortise, and the second elastic body and the third elastic body are arranged in parallel; the outer diameter of the second elastic body is not larger than the outer diameter of the tenon, and the inner diameter of the third elastic body is not smaller than the outer diameter of the tenon.

Furthermore, a flow opening is formed in the abutting joint, and fluid can sequentially pass through the blocking ring and the flow opening to enter the second sleeve.

Furthermore, an elastic supporting body is arranged between the outer peripheral surface of the tenon and the inner peripheral surface of the mortise, and when fillers are filled in the elastic supporting body, the elastic supporting body expands, so that the outer peripheral surface of the tenon is connected with the inner peripheral surface of the mortise.

Furthermore, a filling opening is formed in one end, along the first radial direction, of the elastic supporting body, an exhaust opening is formed in the other end of the elastic supporting body, and the filling opening and the exhaust opening are all one-way holes extending towards the inner cavity of the elastic supporting body.

Furthermore, the elastic supporting body is provided with a positioning part, and the peripheral surface of the tenon is provided with a positioning groove for accommodating the positioning part.

Compared with the prior art, the invention has the beneficial effects that:

1) on the basis of the matching of the tenon and the mortise in the traditional mode, a first connecting structure and a second connecting structure which are parallel to the axial direction of the pipe body are further arranged on the tenon and the mortise of the two concrete pipes. The first connecting structure and the second connecting structure are combined to further realize the axial sealing connection and fixation of the two pipe bodies, so that the two pipe bodies are connected into a whole in the axial direction. The rabbet pipe joint structure of the invention has more reliable connection, and even if the mortises on the outer peripheral surfaces of the two pipe joints (such as the second mortises and the third mortises) are broken, the axial reliable sealing connection of the two pipe bodies can be ensured.

2) According to the invention, through the arrangement of the first elastic body and the stop ring, the connecting rod arranged in the mortise is in an axially movable state when the first pipe body and the second pipe body are not connected, and when the first pipe body and the second pipe body are connected, the connecting rod capable of axially moving is in flexible contact with the first connecting structure, so that rigid collision between the tenon and the mortise is avoided.

3) According to the invention, the second elastic body and the third elastic body are arranged, so that when the bottom surface of one side of the first pipe body and the second pipe body sinks, the pressed side of the second elastic body and the pressed side of the third elastic body become narrow, and the stretched side of the second elastic body and the stretched side of the third elastic body become wide. So for the connection structure of first body and second body can resist tiny local ground subside, guarantees the fastness of connecting between two bodys.

4) Compared with the method that the filler is directly filled between the outer peripheral surface (namely the second tenon surface) of the tenon and the inner peripheral surface (namely the second tenon surface) of the mortise, the method has the advantages that the elastic support body is arranged, the elastic support body can play a role of filling the filler into the die, so that the filler such as cement is formed between the outer peripheral surface (namely the second tenon surface) of the tenon and the inner peripheral surface of the mortise according to a preset shape, and the connection stability between the outer peripheral surface (namely the second tenon surface) of the tenon and the inner peripheral surface of the mortise is enhanced; even if the elastic supporting body is aged along with the lapse of time, the sealing property between the tenon and the mortise can be ensured because the filler in the elastic supporting body is solidified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a second tubular body with a second connection structure according to one embodiment of the present invention;

FIG. 2 is a schematic view of a first tubular body with a first connection structure according to one embodiment of the present invention;

FIG. 3 is a schematic view of the split structure of the first pipe body with the first connecting structure in FIG. 2;

FIG. 4 is a left side elevational view of the first tubular body illustrated in FIG. 2 with the first connection structure;

FIG. 5 is a cross-sectional view of the first tubular body of FIG. 2 with a first connection structure;

FIG. 6 is a schematic view of the second tube with the second connecting structure shown in FIG. 1;

FIG. 7 is a left side elevational view of the second tubular body of FIG. 1 with a second connection structure;

FIG. 8 is a cross-sectional view of the second tubular body of FIG. 1 with a second connection structure;

FIG. 9 is a schematic view of the second connection shown in FIG. 6;

FIG. 10 is an axial cross-sectional view of the second coupling structure of FIG. 9 in combination;

FIG. 11 is a schematic structural view of the connecting rod of FIG. 9;

FIG. 12 is a schematic diagram of a split body with a second elastomer and a third elastomer in an embodiment of the invention;

FIG. 13 is a schematic structural view of the second elastic body of FIG. 12;

FIG. 14 is a schematic view of the overall structure of an elastic support body according to an embodiment of the present invention;

FIG. 15 is a side view of an elastic support in an embodiment of the invention;

FIG. 16 is a schematic view of a tongue and groove connection of an rabbet tube in accordance with an embodiment of the invention.

Wherein 1-first tube, 11-tenon, 111-first connection hole, 112-first tenon face, 113-second tenon face, 114-third tenon face, 115-positioning portion, 12-first connection structure, 121-first sleeve, 14-anchor rod, 2-second tube, 21-mortise, 211-second connection hole, 212-first mortise face, 213-second mortise face, 214-third mortise face, 22-second connection structure, 221-second sleeve, 222-connection rod, 2221-abutment head, 2222-flow port, 223-first elastomer, 224-stop ring, 24-anchor rod, 3-second elastomer, 31-installation groove, 4-third elastomer, 5-elastic support body, 51-filling port, 52-exhaust port, 53-positioning portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

The reinforced concrete pipe has the unique advantages of high external pressure resistance, good durability, long service life, easy manufacture, low production cost, low price and the like, is widely used for laying drainage pipelines in urban construction, industrial and mining enterprise construction and irrigation and water conservancy construction in China, and obtains better economic benefit and social benefit.

The existing tongue-and-groove type concrete pipes are connected by directly butting the tenons and the mortises of the two concrete pipes and arranging a sliding rubber ring between the inner circumferential surface of the tenon and the outer circumferential surface of the mortises. The connection mode has the advantages of simple and convenient operation and insufficient connection strength. Even if the foundation bearing the concrete sinks to a small extent, the connection between the tenon and the mortise is loosened, and even the interface is damaged in severe cases. And the arrangement of the sliding rubber ring is not easy to align, and the sliding rubber ring is easy to corrode, so that the sealing effect is general.

In view of this, as shown in fig. 1 and fig. 2, an embodiment of the present invention provides a reinforced concrete tongue-and-groove pipe joint, where the tongue-and-groove pipe joint includes a first pipe body 1 and a second pipe body 2 that are disposed opposite to each other, a tenon 11 is disposed at one end of the first pipe body 1, a mortise 21 is disposed at one end of the second pipe body 2 opposite to the first pipe body 1, a first connecting structure 12 axially parallel to the first pipe body 1 is disposed on the tenon 11, a second connecting structure 22 axially parallel to the second pipe body 2 is disposed on the mortise 21, and the tenon 11 of the first pipe body 1 and the mortise 21 of the second pipe body 2 are hermetically connected through the combination of the first connecting structure 12 and the second connecting structure 22.

As shown in fig. 3 to 5, the tenon 11 includes a first tenon surface 112, a second tenon surface 113 perpendicular to the first tenon surface 112, and a third tenon surface 114 parallel to the first tenon surface, where the second tenon surface 113 is an outer peripheral surface of the tenon 11. The first connecting structure 12 is disposed on the first tenon surface 112 and is parallel to the axial direction of the first pipe body 1.

As shown in fig. 5 and 6, the mortise 21 includes a second mortise surface 213 perpendicular to the first mortise surface 212 and a third mortise surface 214 parallel to the first mortise surface 212, wherein the second mortise surface 213 is an inner circumferential surface of the mortise 21. The first connecting structure 22 is disposed on the first tongue-and-groove surface 212 and is parallel to the axial direction of the second pipe 2.

When the tongue 11 of the first pipe body 1 is coupled with the tongue 21 of the second pipe body 2, the first tongue surface 112 contacts the first tongue surface 212, the second tongue surface 113 contacts the second tongue surface 213, and the third tongue surface 114 contacts the third tongue surface 214.

The first connecting structure 12 is disposed on the first tenon surface 112, and the second connecting structure 22 is disposed on the second mortise surface 213. The first and second connecting

structures

12 and 22 are both parallel to the axial direction of the first and second

tubular bodies

1 and 2. Through the combination of the first connecting structure 12 and the second connecting structure 22, the first tenon surface 112 and the first mortise surface 212 are connected in a sealing and fixing manner, and further, the first pipe body 1 and the second pipe body 2 are connected in a sealing and fixing manner.

As shown in fig. 1 and 2, four sets of the first connecting structure 12 and the second connecting structure 22 are provided on the tenon 11 of the first pipe body 1 and the mortise 21 of the second pipe body 2. That is, the number and the positions of the first connecting structures 12 and the second connecting structures 22 are consistent and correspond to each other. Preferably, a plurality of sets of corresponding first and

second connection structures

12, 22 may be arranged along the circumference of the first tongue face 112/first groove face 212 of the pipe body; preferably, the plurality of sets of first and

second connection structures

12 and 22 are evenly distributed along the circumferential direction of the first rabbet surface 112/the first rabbet surface 212.

In the above solution, compared with the method of directly matching the tenon 11 with the mortise 21 in the conventional manner to connect the two

pipe bodies

1 and 2, in the solution described in this embodiment, on the basis of matching the tenon 11 with the mortise 12 in the conventional manner, the tenon 11 and the mortise 12 of the two

concrete pipes

1 and 2 are further provided with the first connecting structure 12 and the second connecting structure 22 which are axially parallel to the pipe bodies. The first connecting structure 12 and the second connecting structure 22 are combined to further realize the axial sealing connection and fixation of the two pipe bodies, so that the two

pipe bodies

1 and 2 are connected into a whole in the axial direction. The tongue-and-groove pipe joint structure of the embodiment has more reliable connection, and even if the mortises on the outer peripheral surfaces of the two pipe joints (such as the second mortises surface 213 and the third mortises surface 214) are broken, the axial reliable sealing connection of the two pipe bodies can be ensured.

It should be noted that the first connecting structure 12 and the second connecting structure 22 in the above-mentioned solution must be parallel to the axial direction of the two

pipe bodies

1 and 2, and must be disposed on the first tenon surface 113 of the tenon 11 and the first mortise surface 212 of the mortise 21. Otherwise, reliable connection of the

pipe bodies

1 and 2 in the axial direction cannot be achieved.

Further,

anchor rods

14 and 24 are embedded in the first pipe body 1 and the second pipe body 2, a first connecting hole 111 axially parallel to the first pipe body 1 is formed in the tenon 11, and a second connecting hole 211 axially parallel to the second pipe body 2 is formed in the mortise 21;

the first connection structure 12 includes a first sleeve 121, the first sleeve 121 is fixed in the first connection hole 111, and the first sleeve 121 is fixedly connected with the anchor rod 14 in the first pipe body 1;

the second connecting structure 22 comprises a second sleeve 221 and a connecting rod 222, the second sleeve 221 is fixed in the second connecting hole 211, and the second sleeve 221 is fixedly connected with the anchor rod 24 in the second pipe body 2;

one end of the connecting rod 222 is connected to the first sleeve 121 by screw threads, and the other end of the connecting rod 222 is flexibly connected to the second sleeve 221.

As shown in fig. 5 and 8, when the first pipe body 1 and the second pipe body 2 are prepared, the

anchor rods

14 and 24 are embedded into the pipe bodies, and the

anchor rods

14 and 24 are independent from the reinforcing mesh structure used for supporting the forming of the pipe bodies in the pipe bodies. Preferably, the

anchors

14, 24 are parallel to the axial direction of the tube; preferably,

anchor rods

14 and 24 are embedded in the sections, close to the tenon 11 and the mortise 21, of the first pipe body 1 and the second pipe body 2.

The first connection hole 111 is disposed on the first tenon face 112 of the tenon 11, and the first connection hole 111 is parallel to the axial direction of the first pipe body 1; a first sleeve 121 is fixedly connected in the first connection hole 111, and the shape and size of the first sleeve 121 are adapted to the shape and size of the first connection hole 111.

The second connection hole 211 is provided on the first mortise surface 212 of the mortise 21, and the second connection hole 211 is parallel to the axial direction of the second pipe body 2. A second sleeve 221 is fixedly connected in the second connection hole 211, and the shape and size of the second sleeve 221 are adapted to the shape and size of the second connection hole 211.

In the above solution, the first sleeve 121 and the second sleeve 221 are connected by the connecting rod 222, so as to realize the axial connection between the first pipe 1 and the second pipe 2. Wherein, through the one end with connecting rod 222 and second sleeve 221 flexonics, realized the flexible butt joint of first body 1 and second body 2, the vibrations that produce when having reduced the pipeline use are to the destruction of pipeline interface, can avoid the building to subside the damage that brings the interface simultaneously.

Optionally, a notch (not shown) is provided on the first tenon surface 112 to connect the second connection hole 211 with the inner cavity of the first pipe body 1. After the first tube 1 and the second tube 2 are connected to each other, a tightening tool (e.g., a wrench) can be inserted into the connecting rod 222 through the gap, and the connecting rod 222 is tightened to connect the first tube 1 and the second tube 2 to each other by the connecting rod 222.

Further, as shown in fig. 6 to 11, the second connecting structure 22 further includes a first elastic body 223, one end of the first elastic body 223 is fixed to the inner wall of the second sleeve 221, and the other end of the first elastic body 223 abuts against the connecting rod 222.

In actual life, after two rabbet pipes are laid, when the joints of the two pipes are connected, the tenon 11 of one pipe body needs to be pushed into the mortise 21 of the other pipe body (or the mortise 21 of one pipe body needs to be pushed into the tenon 11 of the other pipe body), and the joints of the two pipe bodies are easily damaged due to rigid collision between the two pipe bodies.

In the above-mentioned solution, the first elastic body 223 is disposed in the second connecting structure 22 of the second pipe body 2, one end of the first elastic body 223 is fixed on the inner wall of the second sleeve 221, and the other end of the first elastic body 223 abuts against the connecting rod. When the second connection structure 22 is pushed toward the first connection structure 12 (or the first connection structure 12 is pushed toward the second connection structure 22), the first connection structure 12 and the second connection structure 22 are in flexible contact under the action of the first elastic body 223, so that a rigid collision between the tenon 11 and the mortise 21 is avoided.

Preferably, the first elastic body 223 is a spring made of metal.

Further, the second connecting structure 22 further comprises a stop ring 224, the stop ring 224 is connected with the internal thread of the inner wall of the second sleeve 221, and the inner diameter of the stop ring 224 is larger than the outer diameter of the connecting rod 222; one end of the connecting rod 222 abutting against the first elastic body 223 is provided with an abutting head 2221, and the other end passes through the stop ring 224 and is connected with the first sleeve 121.

In the above-mentioned solution, the abutting head 2221 is provided to increase the abutting area between the connecting rod 222 and the first elastic body 223, and the outer diameter of the abutting head 2221 is larger than the outer diameter of the rod body of the connecting rod 222 and the outer diameter of the first elastic body 223.

The purpose of the blocking ring 224 is to confine the abutment head 2221 within the inner cavity area of the second sleeve 221. The blocking ring 224 is formed in a circular ring shape as a whole, and an external thread matching the internal thread on the inner wall of the second sleeve 221 is provided on the outer circumference of the blocking ring 224. The outer diameter of the stop ring 224 is the same size as the inner diameter of the second sleeve 221, and the inner diameter of the stop ring 224 is larger than the outer diameter of the connecting rod.

In the actual use process, the second connecting structure 22 needs to be installed in the mortise 21 of the pipe body firstly, and the installation method comprises the following steps:

firstly, fixing the second sleeve 221 in the second connecting hole 211, and fixedly connecting the bottom of the second sleeve 221 with the anchor rod 24; secondly, the first elastic body 223 is abutted against the abutting head 2221 of the connecting rod 222 and is accommodated in the second sleeve 221; then, the stop ring 224 is inserted into the connecting rod 222, and the external thread on the outer wall of the stop ring 224 is combined with the internal thread on the inner wall of the second sleeve 221; at this time, the connecting rod 222 can move along the axial direction of the tube body, but the abutting head 2221 of the connecting rod 222 cannot be separated from the inner cavity area of the second sleeve 221 due to the restriction of the blocking ring 224.

Preferably, the first elastic body 223 is always in a compressed state; that is, the first elastic body 223 tightly presses the abutment head 2221 of the connection bar 222 against the blocking ring 224.

Further, as shown in fig. 16, the inner diameter of the second sleeve 221 is larger than the inner diameter of the first sleeve 121, and the outer diameter of the abutting head 2221 is between the outer diameter of the first elastic body 223 and the inner diameter of the blocking ring 224.

In an embodiment of the invention, a second elastic body 3 and a third elastic body 4 which are annular are further arranged between the tenon 11 and the mortise 21, the second elastic body 3 and the third elastic body 4 are arranged in parallel, the outer diameter of the second elastic body 3 is not greater than the outer diameter of the tenon 11, and the inner diameter of the third elastic body 3 is not less than the outer diameter of the tenon 11.

As shown in fig. 12 and 13, the second elastic body 3 and the third elastic body 4 are annular and have the same axial direction as the first tube 1/the second tube 2; the outer diameter of the second elastic body 3 is not larger than the outer diameter of the tenon 11, and the inner diameter of the third elastic body 3 is not smaller than the outer diameter of the tenon 11. Preferably, the outer diameter of the second elastic body 3 is consistent with the outer diameter of the tenon 11.

Further, a mounting groove 31 is provided on the second elastic body 3, wherein a position of the mounting groove 31 corresponds to a position of the first connecting structure 12. When the first connecting structure 12 and the second connecting structure 22 are combined, a worker inserts a tightening tool into the rod body of the connecting rod 222 corresponding to the region of the mounting groove 31, and screws the rod body of the connecting rod 222, so that the connecting rod 222 is tightened with the first sleeve 121 and the second sleeve 221.

When in use, the second elastic body 3 is positioned between the first tenon surface 112 and the first mortise surface 212, one side of the second elastic body 3 is in direct contact with the first tenon surface 112, and the other side is in direct contact with the first mortise surface 212. The third elastic body 4 is located between the third tenon surface 114 and the third mortise surface 214, and one side of the third elastic body 4 is in direct contact with the third tenon surface 114 and the other side is in direct contact with the third mortise surface 214.

With this arrangement, when the bottom surface of one side of the first and second

tubular bodies

1 and 2 is settled, the side of the second and third

elastic bodies

3 and 4 under compression is narrowed, and the side of the second and third

elastic bodies

3 and 4 under tension is widened. So for the connection structure of first body 1 and second body 2 can resist tiny local ground subsidence, guarantees the fastness of connecting between two bodys.

Further, as shown in fig. 9 to 11, a flow opening 2222 is formed on the abutting head 2221, and the fluid can sequentially enter the second sleeve 221 through the blocking ring 224 and the flow opening 2222.

After the first connecting structure 12 and the second connecting structure 22 are completely combined, the second sleeve 221 is preferably filled with fillers such as cement, silt and the like; on one hand, the hollow area of the pipe body can be eliminated, and the strength of the pipe body is improved; on the other hand, the second connecting structure 22 can be in a vacuum state, so that the probability of corrosion by the outside is reduced; meanwhile, the second connecting structure 22 can be fixed, so that the connecting structure of the first pipe body 1 and the second pipe body 2 is more reliably connected.

In the above solution, by providing the flow opening 2222 on the contact head 2221 of the connecting rod 222, since the inner diameter of the blocking ring 224 is larger than the diameter of the rod body of the connecting rod 222, a gap exists between the blocking ring 224 and the connecting rod 222. Fluid fillers such as cement, silt and the like can sequentially enter the second sleeve 221 through the gap between the blocking ring 224 and the connecting rod 222 and the flow port 2222 on the connecting rod 222 abutting head 2221, so that the inner cavity of the second sleeve 221 is filled.

The inner diameter of the second sleeve 221 is set to be larger than that of the first sleeve 121, so that the second connecting structure 22 is conveniently assembled in the mortise 21; on the other hand, it is realized that the connecting rod 222 installed in the mortise 21 is in the axially movable state when the first pipe body 1 and the second pipe body 2 are not connected, and when the connection of the first pipe body 1 and the second pipe body 2 is to be realized, the axially movable connecting rod 222 is in flexible contact with the second connecting structure 22, and a rigid collision between the tenon 11 and the mortise 21 is avoided.

In one embodiment of the present invention, an elastic support 5 is disposed between the outer circumferential surface of the tenon 11 and the inner circumferential surface of the mortise 21, and when the elastic support 5 is filled with a filler, the elastic support 5 is expanded such that the outer circumferential surface of the tenon 11 is connected to the inner circumferential surface of the mortise 21.

The elastic support 5 is annular and disposed between the second tenon surface 113 of the first pipe 1 and the second mortise surface 213 of the second pipe 2. The elastic support body 5 has elasticity, and when the elastic support body 5 is filled with a filler, the elastic support body 5 is expanded so that the outer circumferential surface of the tenon 11 (i.e., the second tenon surface 113) and the inner circumferential surface of the mortise 21 (i.e., the second mortise surface 213) are fixedly connected.

The elastic support body 5 is added to the above-described solution, as compared to filling the filler directly between the outer circumferential surface of the tenon 11 (i.e., the second tenon surface 113) and the inner circumferential surface of the mortise 21 (i.e., the second mortise surface 213). On the other hand, the elastic support 5 may be used as a filling mold for a filler, and the filler such as cement is molded between the outer circumferential surface of the tenon 11 (i.e., the second tenon surface 113) and the inner circumferential surface of the mortise 21 in a predetermined shape, thereby preventing the filler from mixing and enhancing the stability of the connection between the pipe bodies. On the other hand, even if the elastic support body 5 is aged, it can still ensure good sealing between the tenon 11 and the mortise 21 because the filler inside has solidified into the shape limited by the inner cavity of the elastic support body 5.

Preferably, as shown in fig. 14 and 15, the elastic support body 5 is semi-closed; that is, the side of the elastic supporting body 5 facing the second mortise surface 213 is partially provided with an opening, so that the filler in the elastic supporting body 5 can be in direct contact with the second mortise surface 213; alternatively, the side of the elastic support body 5 facing the second rabbet surface 113 is partially provided with an opening (not shown) so that the filler in the elastic support body 5 can be in direct contact with the second rabbet surface 113.

Furthermore, a filling port 51 is arranged at one end of the elastic support body 5 along the first radial direction, an exhaust port 52 is arranged at the other end of the elastic support body 5, and both the filling port 51 and the exhaust port 52 are one-way holes extending to the inner cavity of the elastic support body 5.

Preferably, as shown in fig. 15, the first radial direction refers to a vertical direction when the first pipe and the second pipe are arranged in relative positions, i.e., an up-down direction in fig. 15.

In the above-described embodiment, when filling the elastic support body 5 with a filler such as cement, a filler pipe is inserted into the filler port 51, and an exhaust pipe is inserted into the exhaust port 52; the filler enters the first elastic support body 5 through the filler pipe and the filler opening 51, the air in the elastic support body 5 can be exhausted through the exhaust opening 52 and the exhaust pipe, and when the filler continuously flows out through the exhaust pipe, the elastic support body 5 is filled with the filler; at this time, the elastic support body 5 can be completely filled by drawing the packing tube and the exhaust tube away.

It should be noted that the filling port 51 and the exhaust port 52 are both one-way holes extending into the inner cavity of the elastic support body 5, that is, the filling port 51 and the exhaust port 52 correspond to one-way valves, and when the filling port 51 or the exhaust port 52 is not inserted into a filling pipe or an exhaust pipe, air, filler, or the like inside the elastic support body 5 cannot flow out of the exhaust port 52 or the filling port 51. Thus, the loss of the filler can be prevented when the filler is filled into the elastic support body 5.

In an embodiment of the present invention, as shown in fig. 5 and 14, the elastic supporting body 5 is provided with a positioning portion 53, and the outer circumferential surface of the tenon 11 is provided with a positioning groove 115 for accommodating the positioning portion 53.

When in use, the positioning part 53 of the elastic supporting body 5 can be embedded into the positioning groove 115 on the outer peripheral surface of the tenon 11, and the tenon 11 is combined with the tenon groove 21. In the above scheme, through setting up location portion 53 and constant head tank 115, be convenient for on the one hand confirm the installation location of elastic support body 5, on the other hand has increased the area of contact of elastic support body 5 with tenon 11, tongue-and-groove 21 for be connected between tenon 11 and the tongue-and-groove 21 is more reliable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The reinforced concrete tongue-and-groove pipe joint is characterized by comprising a first pipe body (1) and a second pipe body (2) which are arranged oppositely, wherein a tenon (11) is arranged at one end of the first pipe body (1), a mortise (21) is arranged at one end, opposite to the first pipe body (1), of the second pipe body (2), a first connecting structure (12) axially parallel to the first pipe body (1) is arranged on the tenon (11), a second connecting structure (22) axially parallel to the second pipe body (2) is arranged on the mortise (21), and the tenon (11) of the first pipe body (1) is hermetically connected with the mortise (21) of the second pipe body (2) through the combination of the first connecting structure (12) and the second connecting structure (22).

2. A reinforced concrete tongue-and-groove pipe joint as claimed in claim 1, wherein anchor rods (14, 24) are embedded in the first pipe body (1) and the second pipe body (2), a first connecting hole (111) axially parallel to the first pipe body (1) is formed in the tenon (11), and a second connecting hole (211) axially parallel to the second pipe body (2) is formed in the mortise (21);

the first connecting structure (12) comprises a first sleeve (121), the first sleeve (121) is fixed in the first connecting hole (111), and the first sleeve (121) is fixedly connected with an anchor rod (14) in the first pipe body (1);

the second connecting structure (22) comprises a second sleeve (221) and a connecting rod (222), the second sleeve (221) is fixed in the second connecting hole (211), and the second sleeve (221) is fixedly connected with an anchor rod (24) in the second pipe body (2);

one end of the connecting rod (222) is in threaded connection with the first sleeve (121), and the other end of the connecting rod (222) is in flexible connection with the second sleeve (221).

3. A reinforced concrete tongue-and-groove pipe joint as recited in claim 2, wherein said second coupling structure (22) further comprises a first elastic body (223), one end of said first elastic body (223) is fixed to the inner wall of said second sleeve (221), and the other end of said first elastic body (223) abuts against said coupling rod (222).

4. A reinforced concrete tongue-and-groove pipe joint as recited in claim 3, wherein said second coupling structure (22) further comprises a blocking ring (224), said blocking ring (224) being coupled with the internal thread of the inner wall of said second sleeve (221), said blocking ring (224) having an internal diameter greater than the external diameter of said coupling rod (222);

one end of the connecting rod (222) abutted against the first elastic body (223) is provided with an abutting head (2221), and the other end of the connecting rod penetrates through the stop ring (224) to be connected with the first sleeve (121).

5. A reinforced concrete tongue-and-groove pipe joint as recited in claim 4, characterized in that the inner diameter of the second sleeve (221) is larger than the inner diameter of the first sleeve (121), and the outer diameter of the abutment head (2221) is between the outer diameter of the first elastic body (223) and the inner diameter of the stop ring (224).

6. A reinforced concrete rabbet pipe joint as recited in any one of claims 1 to 5, characterized in that a second elastic body (3) and a third elastic body (4) which are annular are further arranged between said tenon (11) and said mortise (21), said second elastic body (3) and said third elastic body (3) are arranged in parallel;

the outer diameter of the second elastic body (3) is not larger than the outer diameter of the tenon (11), and the inner diameter of the third elastic body (3) is not smaller than the outer diameter of the tenon (11).

7. A reinforced concrete tongue and groove pipe joint as claimed in claim 6, wherein said abutment head (2221) is provided with a passage (2222) through which fluid may pass in sequence through said blocking ring (224) and said passage (2222) into said second sleeve (221).

8. A reinforced concrete tongue-and-groove pipe joint as claimed in claim 1, wherein an elastic support (5) is provided between the outer circumferential surface of the tenon (11) and the inner circumferential surface of the mortise (21), and when a filler is filled in the elastic support (5), the elastic support (5) is expanded so that the outer circumferential surface of the tenon (11) is coupled to the inner circumferential surface of the mortise (21).

9. A reinforced concrete tongue-and-groove tube joint as claimed in claim 8, wherein said resilient support (5) is provided with a filler opening (51) at one end in a first radial direction and an air outlet (52) at the other end, said filler opening (51) and said air outlet (52) being one-way holes extending towards the inner cavity of the resilient support (5).

10. A reinforced concrete tongue-and-groove pipe joint as claimed in claim 7, wherein said elastic support body (5) is provided with a positioning portion (53), and a positioning groove (115) for receiving said positioning portion (53) is provided on the outer peripheral surface of said tenon (11).